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Plans ). RECEIVED JAN 6 2020 CITY OF TIGARD BUILDING DIVISION AMAMer) Jacobs Heating and. Air Conditioning Inc. Submittal Packet Tigard Community Friends Church WO# 51084 • OFFICE COPY CITY OF TTGARD REVIEWED FOCR CODE: COMPLIANCE VALIDITY OF PERMIT Approved: N I THE ISSUANCE OF A PERMIT OTC: [ BASED ON CONSTRUCTION DOCUMENTS AND OTHER Permit#: m p C,anan - noo DATA SHALL NOT PREVENT Address: )LL nQ sw THE CODE OFFICIAL FROM Suite #: REQUIRING THE CORRECTION OF ERRORS. OSSC 105.4 By: 41 J/ Date• J )4'cic') TABLE OF CONTENTS Job Name: Tigard Community Friends Church Job No. 51084 Submittal Packet DESCRIPTION Section Tab Carrier Comfort Gas Furnace Model: 59SC2B080S17-16 GF 5 & 6 1 COBS HEATING &AIR CONDITIONING r Jacobs Heating and Air Conditioning Inc r' 59SC2 Comfort1M Series Single-Stage 4-Way Multipoise Carrie - Condensing Gas Furnace turn to the experts Product Data installation. • Installation flexibility with a 360-degree rotating elbow. 0CL— • More than twelve different venting options,including optional through-the cabinet downflow and horizontal venting. 130 • Ideal condensing furnace height 35"cabinet: short enough for taller coils,but still allows enough room for service. !DI • Silicon Nitride Power Heat"' Hot Surface Igniter. • Aluminized-steel primary heat exchanger. • Stainless steel condensing secondary heat exchanger. • High-quality corrosion-resistant prepainted steel cabinet with hemmed edges for safety. 111 • Factory-configured ready for upflow applications. • Direct-vent/sealed combustion,single-pipe venting or ventilated combustion air. • PSC blower motor,single-speed inducer motor,and single-stage gas valve. \ • Self-diagnostics with SuperBrite LED. A11263 • Approved for Twinning applications(060-12 through 120-20 The 59SC2 Multipoise Comfort Series Condensing Gas Furnace sizes,only) features energy efficiency of 92.1% AFUE gas efficiency and workhorse PSC blower motor. This gas furnace also features • Propane convertible(see accessory list). 4-way multipoise installation flexibility, and is available in eight • Approved for Manufactured Housing/Mobile Home applications model sizes. The 59SC2 can be vented for direct vent/two-pipe, with MH accessory kit. ventilated combustion air, or single-pipe applications. Low NOx • Convenient Air Purifier and Humidifier electrical connections. units are designed for California installations and meet 40 ng/J NOx emissions. Can be installed in air quality management • Residential installations may be eligible for consumer financing districts with a 40 ng/J NOx emissions requirement. Units are through the Retail Credit program. design certified in Canada, and are certified for • Cabinet air leakage less than 2.0%at 1.0 in.W.C.and cabinet air mobile/manufactured home use. leakage less than 1.4%at 0.5 in.W.C.when tested in accordance STANDARD FEATURES with ASHRAE standard 193. • 4-Way multipoise design for upflow,downflow or horizontal E TM •UCERTIFIED,.. oftnenea CertifiedrMindicatesVt ,ER Comfort .� ,_.,['1111,. SERIES r UseMark a CER,IFIED manufacturer's participation in the program.For ` CJ , verification of certification for individual products, go to www.anddireclory.org. ISO 9001 OMI-SAI Global 1 CASING RATED HEATING DIMENSIONS(IN.) HEATING AFUE OUTPUTt AIRFLOWENERGY COOLING CFM MOTOR HP- SAP ORDERING NO. UP- t 0.5 ESP FLOW/ DOWN- STAR® HEATING (inW C) SPEED TAPS H D W (BTUH) HORI- FLOW CFM$ ESP ZONTAL (in.W.C.) 59SC2C040S14--10 35 29.5 14.2 37,000 92.1% 92.1% None 910 0.10 595-970 1/3-4 59SC2C040S17--12 35 29.5 17.5 37,000 92.1% 92.1% None 980 0.10 655-1140 1/2-5 59SC2C060S14--12 35 29.5 14.2 56,000 92.1% 92.1% None 910 0.12 645-1155 1/3-4 59SC2C060S17--16 35 29.5 17.5 56,000 92.1% 92.1% None 980 0.12 985-1505 1/2-4 59SC2B080S17--16 35 29.5 17.5 75,000 92.1% 92.1% None 1030 0.15 760-1555 1/2-5 59SC2C080S21--20 35 29.5 21.0 75,000 92.1% 92.1% None 1115 0.15 865-1885 3/4-5 59SC2C100S21--16 35 29.5 21.0 93,000 92.1% 92.1% None 1490 0.20 890-1490 1/2-4 59SC2C100S21--20 35 29.5 21.0 93,000 92.1% 92.1% None 1550 0.20 1475-1970 3/4-4 59SC2C120S24--20 35 29.5 24.5 112,000 92.1% 92.1% None 2070 0.20 1450-2050 3/4-4 t Capacity in accordance with DOE test procedures. Ratings are position dependent. See rating plate. t Heating CFM at factory default blower motor heating tap settings. U ESP-External Static Pressure N U FEATURES AND BENEFITS U) HYBRID HEAT®Dual Fuel System-This system can provide Direct or Single-pipe Venting, or Optional Ventilated more control over your monthly energy bills by automatically Combustion Air - This furnace can be installed as a 2-pipe selecting the most economical method of heating. With HYBRID (Direct Vent) furnace, in an optional ventilated combustion air HEAT components,our system automatically switches between the application, or in single-pipe, non-direct vent applications. This gas furnace and the single-stage electric heat pump as outside provides added flexibility to meet diverse installation needs. temperatures change to maintain greater efficiency and comfort Sealed Combustion System-This furnace brings in combustion than with any traditional single-source heating system. The heat air from outside the furnace, which results in especially quiet pump also delivers high-efficiency cooling in the summer. operation. By sealing the entire combustion vestibule, the entire Power Heat' Igniter-Carrier's unique SiN igniter is not only furnace can be made quieter,not just the sound of the burners. physically robust but it is also electrically robust. It is capable of Monoport Burners - The burners are specially designed and running at line voltage and does not require complex voltage finely tuned for smooth, quiet combustion and economical regulators as do other brands.This unique feature further enhances operation. the gas furnace reliability and continues Carrier's tradition of Bottom Closure - Factory-installed for side return; easily technology leadership and innovation in providing a reliable and removable for bottom return. The multi-use bottom closure can durable product. also serve for roll-out protection in horizontal applications,and act Reliable Heat Exchanger Design-The aluminized steel, clam as the bottom closure for the optional return air base accessory. shell primary heat exchanger was re-engineered to achieve greater Blower Access Panel Switch - Automatically shuts off 115-v efficiency out of a smaller size. The first two passes of the heat power to furnace whenever blower access panel is opened. exchanger are based on the current 80% product, a design with more than ten years of field-proven performance and success. Quality Registration - Our furnaces are engineered and These innovations, paired with the continuation of a crimped, manufactured under an ISO 9001 registered quality system. no-weld seam create an efficient, robust design for this essential Certifications - This furnace is CSA (AGA and CGA) design component. certified for use with natural and propane gases. The furnace is The condensing heat exchanger, a stainless steel fin and tube factory-shipped for use with natural gas. A CSA listed gas design, is positioned in the furnace to extract additional heat. conversion kit is required to convert furnace for use with propane Stainless steel coupling box componentry between heat exchangers gas.The efficiency is AHRI efficiency rating certified.This furnace has exceptional corrosion resistance in both natural gas and meets California Air Quality Management District emission propane applications. requirements. 4-Way Multipoise Design - One model for all applications - there is no need to stock special downflow or horizontal models when one unit will do it all. The new heat exchanger design allows these units to achieve the certified AFUE in all positions. 2 SPECIFICATIONS The furnace should be sized to provide 100 percent of the design method to calculate eating load estimates and select the furnace. heating load requirement plus any margin that occurs because of Excessive oversizing of the furnace may cause the furnace and/or ., furnace model size capacity increments. None of the furnace vent to fail prematur y,customer discomfort and/or vent freezing. model sizes can be used if the heating load is 20,000 BTU or Failure to follow the e guidelines is considered faulty installation lower. Use Air Conditioning Contractors of America (Manual J and/or misapplicatio of the furnace;and resulting failure,damage, and S); American Society of Heating, Refrigerating, and or repairs may impa warranty coverage. Air-Conditioning Engineers; or other approved engineering Heating Capacity and Efficiency 040-10 040-12 060-12 060-16 080-16 080-20 100-16 100-20 120-20 Input High Heat I (BTUH) 40,000 40,000 60,000 ' 60,000 80,000 80,000 100,000 100,000 120,000 - Output High Heat 1 (BTUH) 37,000 37,000 56,000 56,000 75,000 75,000 93,000 93,000 112,000 Certified Temperature High Heat 40-70 35-65 40-70 35-65 35-65 35-65 40-70 40-70 45-75 Rise Range °F(°C) (22-39) (19-36) (22-39) (19-36) (19-36) (19-36) (22-39) (22-39) (25-42) Airflow Capacity and Blower Data 040-10 040-12 060-12 060-16 080-16 080-20 100-16 100-20 120-20 Rated External Static Heating 0.10 0.10 0.12 0.12 0.15 0.15 0.20 0.20 0.20 Pressure(in.W.C.) Cooling 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Airflow Delivery High Heat 910 980 910 980 1030 1115 1480 1550 2070 @ Rated ESP(CFM) Cooling 970 1140 1155 1505 1555 1885 ' 1490 1970 2050 V Cooling Capacity(tons) 400 CFM/ton 2.5 2.5 2.5 3.5 4 4.5 3.5 5 5 N 350 CFM/ton 2.5 3 3 4 4.5 5.0 4 5.5 5.5 V Direct-Drive Motor Type Permanent Split Capacitor(PSC) CD Direct-Drive Motor HP 0.3 0.5 0.3 0.5 0.5 0.75 0.5 0.75 0.75 Motor Full Load Amps 4.6 6.8 4.6 7.9 7.4 7.9 6.5 11.1 - 11.1 RPM Range 500-1150 Speed Selections 4 5 4 4 5 I 5 4 4 4 Blower WheelDia xWdth I in. 11x7 . 11x8 11x7 11x8 11x8 11x10 11x10 11x10 11x11 I Air Filtration System Field Supplie i Filter Used for Certified Watt Data* KGAWF**06UFR Electrical Data 040-10 1040-12 1060-12 1060-16 1080-16 1080-20 1100-16 1100-20 1120-20 Input Voltage Volts-Hertz-Phase 115-60-1 Operating Voltage Range Min-Max 104-127 Maximum Input Amps Amps 5.2 7.4 5.3 8.6 8.1 8.6 7.3 11.9 11.9 Unit Ampacity Amps 7.5 10.3 7.6 11.7 11.1 11.7 10.1 15.8 15.8 Minimum Wire Size AWG 14 14 14 14 14 14 14 12 12 Maximum Wre Length Feet 49 36 48 31 33 31 36 36 36 @ Minimum Wire Size (M) (14.9) (11.0) (14.6) (9.4) (10.1) (9.4) (11.0) (11.0) (11.0) Maximum Fuse/Ckt Bkr Amps 15 15 15 15 15 15 15 20 20 (Time-Delay Type Recommended) Transformer Capacity(24vac output) 40 VA Heating 27.9 VA j External Control Power Available Cooling 34.6 VA Controls 040-10 1040-12 1060-12 1060-16 1080-16 1080-20 1100-16 1100-20 1120-20 Gas Connection Size 1/2"-NPT Burners(Monoport) 2 I 2 I 3 I 3 I 4 I 4 I 5 I 5 I 6 Gas Valve(Redundant) I Manufacturer White Rodgers Minimum Inlet Gas pressure(in.W.C.) 4.5 Maximum Inlet Gas pressure(in.W.C.) 13.6 Ignition Device Silicon Nitride Limit Control 195 I 180 I 220 I 190 I 185 I 195 I 220 I 220 I 165 Heating Blower Control(Heating Off-Delay) Adjustable:90,120,150,180 seconds Cooling Blower Control(Time Delay Relay) 90 seconds Communication System none Thermostat Connections Com 24V,R,W,G,Y Accessory Connections EAC(115vac);HUM(24vac) *See Accessory List for part numbers available. ' 3 , MODEL NUMBER NOMENCLATURE I. Example of Model Number 1-2 3 4 5 6 7-9 10 11-12 13 14 15-16 Family Htg.Stages Tier Base Effy. Major Series Htg.Cap. Motor Width Voltage Minor Series Airflow 59 T N 6 A 060 V 17 -- -- 14 08-800 CFM Family 10-1000 CFM S-Single Stage I 12-1200 CFM - wo age M-Modulating ,16-1600 CFM :- :I, , --e ormance 20-2000 CFM N-Infinity I- •1 la .. 22-2200 CFM EIEMIIIII 1111® Minor Series 3-+•3• f 21-21.0" Voltage 5-+95 AFUE 24-24.5" 6-+96AFUE 040-40,000 BTU=•r rrr I® 7-+97 AFUE 080=80,000 BTU - nergy •iciest - : I V-Variable Speed 120=120,000 BTU Major Series 140=140,000 BTU Not all familes have these models. A12373 U For California Residents: VFor installation in SCAQMD only:This furnace does not meet the SCAQMD Rule 1111 14 ng/J NOx emission limit,and thus is subject to a � mitigation fee of up to$450.This furnace is not eligible for the Clean Air Furnace Rebate Program:www.CleanAirFumaceRebate.com LI) FURNACE COMPONENTS HOT SURFACE IGNITER GAS BURNER MANUAL RESET ROLLOUT SWITCH FLAME L.-. �� A.6.'i t' SENSOR iIra I i _ r~ _ IMANUAL RESET �• —• - 0- 0 r 0 ROLLOUT SWITCH •GAS VALVE I'� . - A II1 .r Y 6 MAIN LIMIT SWITCH ,j..-- (BEHIND GAS VALVE) OPERATING INSTRUCTIONS O ,� NOT SHOWN(LOCATED ON IO �� MAIN FURNACE DOOR,SEE �, 0S0,Ste• ''I— ' OPERATING INSTRUCTIONS t• it INSIDE DOOR FIGURE). . - '%- �• •1_ .. i� 110% INDUCER MOTOR I �fi /�� ASSEMBLY .02 ELECTRICAL JUNCTION • 1 0 G �. O: BOX(IF REQUIRED, '�1 - WI vt i� LOCATION MAY VARY) •�' ,.'if � iii011111.P'- BLOWER DOOR--,i.4, _ • '- -` °` i� SAFETY SWITCH ---0----•: _ �� • Iii ', -4---MEDIA CABINET •• FURNACE 1 'i BLOWER AND CONTROL — I II MOTOR BOARD I 11, v ®o +tl /Ari 4 CAPACITOR/ ',' , POWER CHOKE 1 (IF USED) RATING PLATE NOT SHOWN \ (LOCATED ON BLOWER DOOR) t r REPRESENTATIVE DRAWING ONLY,SOME MODELS MAY VARY IN APPEARANCE. A170154 4 ACCESSORIES DESCRIPTION PART NUMBER 1040-10 1040-12 060-12 060-16 080-16 080-20 1100-16 1 100-20 120-20 Venting Accessories Vent Kit-Through the Cabinet KGADC0101 BVC • • • • • • • • • Vent Terminal-Concentric-2"(51 mm) KGAVT0701 CVT - Vent Terminal-Concentric-3"(76 mm) KGAVT0801 CVT See Venting Tables Vent Terminal Bracket-2"(51 mm) - KGAVT0101 BRA Vent Terminal Bracket-3"(76 mm) KGAVT0201 BRA Vent Kit—Rubber Coupling KGAAC0101 RVC See Venting Tables Condensate Drainage Accessories Freeze Protect Kit-Condensate Drain Line Tape KGAHT0101 CFP • • • • • • • • • Freeze Protect Kit-Condensate Trap with Heat Pad KGAHT0201 CFP • • • • • • • • • CPVC to PVC Drain Adapters-1/2"CPVC to 3/4"PVC KGAAD0110PVC • • • • • • • • • Horizontal Trap Grommet-Direct Vent KGACK0101 HCK All DV Horizontal Condensate Neutralizer Kit P908-0001 • • • • • • • • • External Trap Kit KGAET0201 ETK • • • • • • • • • Ductwork Adapter Accessories Furnace Base Kit for Combustible Floors KGASB0201ALL • • • • • • • • • Coil Adapter Kits—No Offset KGADA0101ALL • • • • • • • • • Coil Adapter Kits—Single Offset KGADA0201ALL • • • • • • • • • Coil Adapter Kits—Double Offset KGADA0301ALL • • • • • • • • • tJ Return Air Base(Upflow Applications)14.0—in.wide KGARP0301 B14 • • U Return Air Base(Upflow Applications)17.5—in.wide KGARP0301 B17 • • • CO Return Air Base(Upflow Applications)21.0—in.wide KGARP0301 B21 • • • Return Air Base(Upflow Applications)24.5—in.wide KGARP0301 B24 • IAQ Device Duct Adapters 20.0—in.IAQ to 16 in.Side KGAAD0101 MEC 20"x25"IAQ Devices Return IAQ Device Duct Adapters 24.0—in.IAQ to 16 in.Side KGAAD0201 MEC 24"x25"IAQ Devices Return Gas Conversion Accessories Mobile Home Kit KGBMH0601 KIT • • • • • • • • • Gas Conversion Kit-Nat to LP KGBNP50011 SP • • • • • • • • • Gas Conversion Kit-LP to Nat KGBPN42011 SP • • • • • • • • • Gas Orifice Kit-#42(Nat Gas) LH32DB207 • • • • • • • • • Gas Orifice Kit-#43(Nat Gas) LH32DB202 • • • • • • • • • Gas Orifice Kit-#44(Nat Gas) LH32DB200 • • • • • • • • • Gas Orifice Kit-#45(Nat Gas) LH32DB205 • • • • • • • • • Gas Orifice Kit-#46(Nat Gas) LH32DB208 • • • • • • • • • Gas Orifice Kit-#47(Nat Gas) LH32DB078 • • • • • • • • • Gas Orifice Kit-#48(Nat Gas) LH32DB076 • • • • • • • • • Gas Orifice Kit-#54(LP) LH32DB203 • • • • • • • • • Gas Orifice Kit-#55(LP) LH32DB201 • • • • • • • • • Gas Orifice Kit-#56(LP) LH32DB206 • • • • • • • • • Gas Orifice Kit-1.25mm(LP) LH32D8209 • • • • • • • • • Gas Orifice Kit-1.30mm(LP) LH32DB210 • • • • • • • • • Gas Valve Adapter Gas Valve Tower Port Adapter Kit I 92-1003 I • I • I • I • I • I • 1 • I • I • Control Accessories >Twinning Kit I KGATWO701 HSI I I • I • I • I • I • I • I • IAQ Accessories Filter Rack—Bottom Return for 1"Filters—14.2"wide KGBFRO401 B14 • • • • • • • • • Filter Rack—Bottom Return for 1"Filters—17.5"wide KGBFRO501 B17 • • • • • • • • • Filter Rack—Bottom Return for 1"Filters—21.0"wide KGBFRO601 B21 • • • • • • • • • Filter Rack—Bottom Return for 1"Filters—24.5"wide KGBFRO701 B24 • • • • • • • • • Filter Pack(6 pack)—Washable-16x25x1 KGAWF1306UFR • • • • • • • • • Filter Pack(6 pack)—Washable-24x25x1 KGAWF1506UFR • • • • • • • • • EZ-Flex Filter-16"(406 mm) EXPXXFIL0016 Use with EZXCAB-1016 EZ-Flex Filter-20"(508 mm) EXPXXFIL0020 Use with EZXCAB-1020 EZ-Flex Filter-24" (610 mm) EXPXXFIL0024 Use with EZXCAB-1024 EZ-Flex Filter with End Caps-16"(406 mm) EXPXXUNV0016 Use with EZXCAB-1016 EZ-Flex Filter with End Caps-20"(508 mm) EXPXXUNV0020 Use with EZXCAB-1020 EZ-Flex Filter with End Caps-24"(610 mm) EXPXXUNV0024 Use with EZXCAB-1024 Cartridge Media Filter-16"(406 mm) FILXXCAR0016 Use with FILCABXL-1016 Cartridge Media Filter-20"(508 mm) FILXXCAR0020 Use with FILCABXL-1020 Cartridge Media Filter-24"(610 mm) FILXXCAR0024 Use with FILCABXL-1024 EZ Flex Cabinet Side or Bottom Return 4"Filters—16" EZXCABCC0016 • • • • • EZ Flex Cabinet Side or Bottom Return 4"Filters—20" EZXCABCC0020 • • • EZ Flex Cabinet Side or Bottom Return 4"Filters—24" FILCABXL0024 • •= Used with the model furnace 5 AIR DELIVERY - CFM (BOTTOM RETURN WITH FILTER) , Furnace Return Air Wire Lead Cooling CFM/ Test Airflow Delivery @ Various External Static Pressures Connection Color Tons Ton 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Black 2.5 388 1145 1100 1060 1015 970 920 860 785 680 615 040-10 SIDE/BOTTOM Blue 2.0 413 970 940 905 870 825 775 730 675 570 505 Yellow 2.0 385 910 880 845 810 770 725 675 600 535 475 Red 1.5 397 725 695 665 635 595 555 510 460 390 340 Black 3.0 385 1215 1205 1205 1195 1155 1100 1045 975 910 805 060-12 SIDE/BOTTOM Blue 2.5 370 980 985 980 955 925 880 835 780 695 585 Yellow 2.0 425 910 920 905 880 850 815 765 695 630 545 Red 3 1.5 430 750 730 705 680 645 605 555 Black 3.0 380 1365 1310 1255 1200 1140 1080 1015 950 860 795 Yellow 2.5 418 1245 1200 1150 1100 1045 990 930 855 790 730 040-12 SIDE/BOTTOM Orange 2.5 366 1050 1025 985 950 915 870 820 760 705 655 Blue 2.0 435 980 955 935 905 870 830 780 725 675 625 Red 1.5 437 720 705 690 675 655 625 590 555 525 485 Black 4.0 376 1600 1545 1505 1475 1505 1445 1400 1330 1235 1140 U 060-16 SIDE/BOTTOM Yellow 3.5 377 1380 1340 1335 1330 1320 1285 1225 1155 1085 1000 N Blue 3.0 387 1190 1185 1195 1195 1160 1125 1075 1015 U Red 3 2.5 394 1030 1025 1030 1010 corn Black 4.0 408 1800 1770 1735 1685 1630 1570 1495 1415 1330 1230 Yellow 3.5 386 1445 1430 1410 1385 1350 1305 1255 1195 1120 1045 080-16 SIDE/BOTTOM Orange 3.0 390 1250 1240 1225 1200 1170 1130 1090 1040 975 910 Blue 2.5 404 1090 1080 1060 1035 1010 970 930 885 835 765 Red 2.0 390 Black 5.0 377 2225 2160 2070 1980 1885 1790 1690 1575 1460 1345 BOTTOM or Yellow 4.0 386 1690 1665 1640 1595 1545 1485 1410 1330 1235 1135 080-20TWO-SIDES 4,5 Orange 3.5 397 1485 1470 1455 1430 1390 1340 1280 1205 1120 1035 Blue 3 2.5 426 1120 1110 1100 1090 1065 1035''''''990.''"'935"``"`*870` ''1305` Red 3 2.0 433 %940 920 910 890 865 830 790 745 690 625 Black 4.0 373 1715 1660 1610 1555 1490 1420 1340 1245 1 150 1065 100-16 SIDE/BOTTOM Yellow3 3.5 379 1535 1480 1435 1380 1325 1260 1180 1095 1010 910 Blue3 3.0 367 1300 1255 1205 1160 1100 1035 970 `905 810 730 Red 3 2.0 445 1110 1055 1005111111.111E635 770 690 610 535 Black 5.0 394 2270 2205 2130 2055 1970 1880 1780 1670 1555 1425 100-20 BOTTOM or Yellow 5.0 367 2090 2040 1980 1910 1835 1755 1670 1570 1460 1340 TWO-SIDES 4.5 Blue 4.0 416 1850 1815 1775 1725 1665 1600 1525 1435 1335 1225 Red 3.5 421 1580 1550 1540 1515 1475 1420 1355 1280 1190 1100 Black 5.0 410 2385 2310 2230 2150 2050 1920 1780 1650 1540 1415 120-20 BOTTOM or Yellow 5.0 369 2130 2070 2010 1940 1845 1740 1630 1525 1420 1305 TWO-SIDES 4,5 Blue 4.0 416 1875 1840 1795 1735 1665 1580 1495 1410 1310 1205 Red3 3.5 414 1610 1585 1555 1515 1450 1395 1325 1250 NOTE: 1. A filter is required for each return-air inlet. Airflow performance includes a 3/4-in.(19 mm)washable filter media such as contained in a factory-author- ized accessory filter rack. See accessory list. To determine airflow performance without this filter,assume an additional 0.1 in.W.C..available external static pressure. 2. ADJUST THE BLOWER SPEED TAPS AS NECESSARY FOR THE PROPER AIR TEMPERATURE RISE FOR EACH INSTALLATION. 3. Shaded areas indicate that this airflow range is BELOW THE RANGE ALLOWED FOR HEATING OPERATION. 4. Airflows over 1800 CFM require bottom return,two-side return,or bottom and side return. A minimum filter size of 20"x 25"(508 x 635 mm)is required. 5. For upflow applications,air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return. 6. All airflows that are shown in BOLD exceed 0.58 watts per CFM at the given external static pressure. 6 MAXIMUM ALLOWABLE EXPOSED VENT LENGHT INSULATION TABLE '. Table 1- Maximum Allowable Exposed Vent Length in Unconditioned Space-Ft. Unit Size 40,000*BTUH 60,000 BTUH Uninsulated 318-In.Insulation 1/2-in.insulation Uninsulated 3/8-In.insulation 1/2-in.Insulation Winter Pipe Dia. 1 1/2 2 2'/2 1' 2 2'/2 1'/2 2 2% 1 1/2 2 2% 3 1% 2 2'% 3 1 1/2 2 2 1/2 3 - Design in. Temp 20 20 20 20 20 5• 0 45 20 60 50 20 30 30 25 20 75 65 60 20 85 75 65 °F 0 10 5 5 20 2• 5 20 20 30 25 15 15 10 10 20 40 30 25 20 45 40 30 -20 5 20 15 10 20 20 15 ;; 10 5 20 25 20 15 20 30 25 20 -40 15 10 5 15 15 10 ,,,,; 5 20 15 15 10 20 20 15 10 Unit Size 80,000 BTUH Uninsulated 3/8-in.Insulation 1/2-in.Insulation Winter Pipe Dia. 1' 2 2% 3 4 1'/2 2 2'/2 3 4 1 Y 2 2% 3 4 Design in. Temp 20 15 40 40 35 30 15 . 50 90 75 65 15 50 70 70 70 °F 0 15 20 15 10 5 15 50 45 35 30 15 50 50 40 35 -20 15 10 5 15 35 30 20 15 15 40 30 25 15 -40 10 5 15 25 20 1�5 5 15 30 25 20 10 Unit Size 100,000 BTUH Uninsulated 3/8-in.Insulation 1/2-in.Insulation Winter Pipe Dia. 2 21/2 3 4 2 2'/2 3 4 2 2'/2 3 4 Design In. Temp 20 20 50 40 35 20 80 95 80 20 80 105 90 °F 0 20 ' 20 15 10 20 55 45 35 20 65 55 45 -20 15 10 5 20 35 30 20 20 45 35 25 -40 10 5 20 25 20 10 20 30 25 15 Unit Size 120,000 BTUH 140,000 BTUH Uninsulated 3/8-in.Insulation 1/2-In.Insulation Uninsulated 3/8-in.Insulation 1/2-in.Insulation Winter Pipe Die. 2% 3 4 2% 3 4 2% 3 4 2'/ 3 4 2% 3 4 2'/2 3 4 Design in. Temp 20 10 50 40 10 75 95 10 75 105 5 ' 55 50 5 65 105 5 ' 65 125 °F 0 10 20 15 10 55 45 10 65 50 5 25 15 5 65 50 5 65 60 -20 10 10 )i 10 35 25 10 45 30 5 10 5 5 45 30 5 50 40 -40 10 5 10 25 15 10 30 20 5 5 5 30 20 5 35 25 Maximum Allowable Exposed Vent Length in Unconditioned Space-Meters Unit Size 40,000'BTUH 60,000 BTUH Uninsulated 3/8-In.Insulation 1/2-In.Insulation ' Uninsulated 3/8-In.Insulation 1/2-in.Insulation Winter Pipe Dia. 38 51 64 38 51 64 38 61 64 38 51 64 76 38 51 64 76 38 51 64 76 Design mm Temp -7 6.1 6.1 6.1 6.1 15.2 13.7 6.1 18.3 15.2 6.1 9.1 9.1 7.6 6.1 22.9 19.8 18.3 6.1 25.9 22.9 19.8 °C -18 3.0 1.5 1.5 6.1 7.6 6.1 6.1 9.1 7.6 4.6 4.6 3.0 3.0 6.1 12.2 9.1 7.6 6.1 13.7 12.2 9.1 -29 1.5 . 6.1 4.6 3.0 6.1 6.1 4.6 3.0 1.5 6.1 7.6 6.1 4.6 6.1 9.1 7.6 6.1 -40 4.6 3.0 1.5 4.6 4.6 3.0 1.5 6.1 4.6 4.6 3.0 6.1 6.1 4.6 3.0 Unit Size 80,000 BTUH Uninsulated 3/8-in.Insulation 112-In.Insulation Winter Pipe Dia. 38 51 64 76 102 38 61 64 76 102 38 51 64 76 102 Design mm Temp -7 4.6 12.2 12.2 10.7 9.1 4.6 15.2 27.4 22.9 19.8 4.6 15.2 21.3 21.3 21.3 °C -18 4.6 6.1 4.6 3.0 1.5 4.6 15.2 13.7 10.7 9.1 4.6 15.2 15.2 12.2 10.7 -29 4.6 3.0 1.5 4.6 10.7 9.1 6.1 4.6 4.6 12.2 9.1 7.6 4.6 -40 3.0 1.5 4.6 7.6 6.1 4.6 1.5 4.6 9.1 7.6 6.1 3.0 Unit Size 100,000 BTUH Uninsulated 3/8-in.Insulation 1/2-in.Insulation Winter Pipe Die. 51 64 76 102 51 64 76 102 51 64 76 102 Design mm Temp -7 6.1 15.2 12.2 10.7 6.1 24.4 28.9 24.4 6.1 24.4 32.0 27.4 °C -18 6.1 6.1 ' 4.6 3.0 6.1 16.8 13.7 10.7 6.1 19.8 16.7 13.7 -29 4.6 3.0 1.5 6.1 10.7 9.1 6.1 6.1 13.7 10.7 7.6 -40 3.0 1.5 6.1 7.6 6.1 3.0 6.1 9.1 7.6 4.6 Unit Size 120,000 BTUH 140,000 BTUH Uninsulated 3/8-In.Insulation 1/2-In.Insulation Uninsulated 3/8-in.insulation 1/2-In.Insulation Winter Pipe Dia. 64 76 102 64 76 102 64 76 102 64 76 102 64 76 102 64 76 102 Design mm Temp -7 3.0 15.2 12.2 3.0 22.9 28.9 3.0 22.9 32.0 1.5 16.7 15.2 1.5 19.8 32.0 1.5 19.8 38.1 °C -18 3.0 6.1 4.6 3.0 ' 16.8 13.7 3.0 19.8 15.2 1.5 7.6 4.6 1.5 19.8 15.2 1.5 19.8 18.3 -29 3.0 3.0 3.0 10.7 7.6 3.0 13.7 9.1 1.5 3.0 1.5 1.5 13.7 ' 9• .1 1.5 15.2 12.2 -40 3.0 1.5 3.0 7.6 4.6 3.0 9.1 6.1 1.5 1.5 1.5 9.1 6• .1 1.5 35 7.6 7 . MAXIMUM EQUIVALENT VENT LENGTH `, Table 2-Maximum Equivalent Vent Length NOTE: Maximum Equivalent Vent Length(MEVL)includes standard and concentric vent termination and does NOT include elbows. Use Table 3-Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application. Single Stage 92%- Ft. Unit Size 40,0001 60,000 2 80,000 100,000 3 120,000 3 Pipe Dia.(in) 1 1/2 2 2 1/2 1 1/2 2 21/2 3 1 1/2 2 2 Y 3 4 2 2 1/2 3 4 2 1/2 3 4 0-2000 20 85 185 100 175 200 15 55 130 175 200 20 80 175 200 75 185 2001-3000 80 175 20 95 165 185 125 165 185 165 185 10 70 175 3001-4000 15 160 16 90 155 175 49 115 155 175 15 75 175 5 65 165 Altitude 4001-4500 70 155 85 170 10 150 165 70 155 170 150 44 110 160 (feet) 4501-5000 10 145 15 80 165 145 160 150 165 60 5001-6000 60 130 75 140 155 41 100 135 150 10 65 140 155 155 6001-7000 55 120 13 70 130 145 38 125 140 60 135 145 N/A 50 140 7001-8000 5 50 110 10 65 120 135 36 90 120 125 55 125 135 46 130 8001-9000 30 95 5 60 115 125 N/A 33 80 110 115 N/A 50 115 125 43 120 9001-10000 N/A 25 85 N/A 55 105 115 30 75 100 105 45 100 115 39 115 Single Stage 92%- Metric V Unit Size 40,000 1 60,000 2 80,000 100,000 3 120,000 3 N Pipe Dia. N (mm) 38 51 64 38 5 64 76 38 51 64 76 102 51 64 76 102 64 76 102 0-610 6.0 25.9 56.3 30.4 53.3 60.9 4.5 16.7 39.6 53.3 60.9 6.0 24.3 53.3 60.9 22.8 56.3 611-914 24.3 53.3 6'0 28.9 50.2 56.3 38.1 50.2 56.3 22.8 50.2 56.3 3.0 21.3 53.3 915-1219 4'5 48.7 4.8 27.4 47.2 53.3 14.9 35.0 47.2 53.3 4'5 0.0 53.3 1.5 19.8 50.2 Altitude 47.2 1220-1370 21.3 47.2 25.9 51.8 3.0 33.5 45.7 50.2 21.3 51.8 (meters) 45.7 13.4 48.7 1371-152.e 3.0 44.1 4.5 24.3 50.2 0.0 44.1 48.7 19.8 45.7 50.2 18.2 1525-1829 18.2 39.6 22.8 42.6 47.2 12.4 30.4 41.1 45.7 3'0 0.0 42.6 47.2 47.2 1830-2134 16.7 36.5 3.9 21.3 39.6 44.1 11.5 27.4 .1 42.6 18.2 41.1 44.1 N/A 15.2 42.6 2135-2438 1'5 15.2 33.5 3.0 19.8 36.5 41.1 10.9 0.0 36.5 38.1 16.7 38.1 41.1 14.0 39.6 2439-2743N/A 9.1 28.9 1.5 18.2 35.0 38.1 N/A 10.0 24.3 33.5 35.0 N/A 15.2 35.0 38.1 13.1 36.5 2744-3048 7.6 25.9 N/A 16.7 32.0 35.0 9.1 22.8 '30.4 32.0 13.7 30.4 35.0 11.8 35.0 NOTES: 1. Inducer Outlet Restrictor disk(P/N 337683-401;1.25-in.(32 mm)Dia.)shipped in the loose parts bag or available through Replacement Components required under 10-ft.(3 M)TEVL in all orientations. Required for installations from 0-2000(0 to 610 M)above sea level. Failure to use an outlet restric- tor may result in flame disturbances or flame sense lock-out. 2. Inducer Outlet Restrictor disk(P/N 337683-401;1.25-in.(32 mm)Dia.)available through Replacement Components required for no greater than 5-ft.(1.5 M)TEVL in downflow and horizontal orientations only. Required for installations from 0-2000(0 to 610 M)above sea level. 3. Inducer Outlet Restrictor disk(P/N 337683-402;1.50-in.(38 mm)Dia.)available through Replacement Components required for no greater than 5-ft.(1.5 M)TEVL in downflow and horizontal orientations only. Required for installations from 0-2000(0 to 610 M)above sea level. ELBOW CONFIGURATIONS VENT TERMINAL CONFIGURATIONS di #11E Concentric lik �:. itLong Medium Mitered `�--a ii _�!Standard 2-in.,3-in.,or optional 4-in.termination. A13110 Table 3-Deductions from Maximum Equivalent Vent Length-Ft.(M) Pipe Diameter(in): 1-1/2 2 2-1/2 3 4 Mitered 90°Elbow 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4) Medium Radius 90°Elbow 5 (1.5) 5 (1.5) 5 (1.5) 5 . (1.5) 5 (1.5) Long Radius 90°Elbow 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9) Mitered 45°Elbow 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2) Medium Radius 45°Elbow 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) • Long Radius 45°Elbow 1.5 (0.5) 1.5 . (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) Tee 16 (4.9) 16 . (4.9) 16 (4.9) 16 (4.9) 16 (4.9) NOTES: 1. Use only the smallest diameter pipe possible for venting. Over-sizing may cause flame disturbance or excessive vent terminal icing or freeze-up. 2. NA-Not allowed. Pressure switch will not close,or flame disturbance may result. 3. Vent sizing for Canadian installations over 4500 ft.(1370 M)above sea level are subject to acceptance by the local authorities having jurisdiction. 4. Size both the combustion air and vent pipe independently,then use the larger size for both pipes. 5. Assume the two 45°elbows equal one 90°elbow. Wide radius elbows are desirable and may be required in some cases. 6. Elbow and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count. 7. The minimum pipe length is 5 ft.(2 M)linear feet(meters)for all applications. 8. Use 3-in.(76 mm)diameter vent termination kit for installations requiring 4-in.(102 mm)diameter pipe. 8 Venting System Length Calculations The Total Equivalent Vent Length(TEVL)for EACH combustion air or vent pipe equals the length of the venting system,plus the equivalent length of elbows used in the venting system from Table 3. Standard vent terminations or factory accessory concentric vent terminations count for zero deduction. See vent system manufacturer's data for equivalent lengths of flexible vent pipe or other termination systems. DO NOT ASSUME that one foot of flexible vent pipe equals one foot of straight PVC/ABS DWV vent pipe. Compare the Total Equivalent Vent Length to the Maximum Equivalent Vent Lengths in Table 2. Example 1 A direct-vent 60,000 BTUH furnace installed at 2100 ft.(640M).Venting system includes FOR EACH PIPE: 70 feet(22 M)of vent pipe,65 feet(20 M)of combustion air inlet pipe,(3)90°long-radius elbows,(2)45Q long-radius elbows,and a factory accessory concentric vent kit. Can this application use 2"(50 mm ND)PVC/ABS DWV vent piping? Measure the required linear length of air inlet and 70 ft. Use length of the longer of the vent vent pipe;insert the longest of the two here (22 M) _ or air inlet piping system Add equiv length of(3)90°long-radius elbows (use the highest number of elbows for either the 3 x (0 3 M) _ (2 M) From Table 3 7vent or inlet pipe) U Add equiv length of(2)45°long-radius elbows U (use the highest number of elbows for either the 2 x 1.5 ft. _ 3 ft. From Table 3 vent or inlet pipe) (0.5 M) (0.9 M) Add equiv length of factory concentric vent term 0 ft. From Table 3 Add correction for flexible vent pipe,if any 0 ft. From Vent Manufacturer's instructions;zero for PVC/ABS DWV Total Equivalent Vent Length(TEVL) 82 ft. Add all of the above lines (25 M) Maximum Equivalent Vent Length(MEVL) 95 ft. For 2"pipe from Table 2 (29 M) Is TEVL less than MEVL? YES Therefore,2"pipe MAY be used Example 2 A direct-vent 60,000 BTUH furnace installed at 2100 ft.(640M).Venting system includes FOR EACH PIPE: 100 feet(30 M)of vent pipe,95 feet(29 M)of combustion air inlet pipe,(3)90°long-radius elbows,and a polypropylene concentric vent kit. Also includes 20 feet(6.1 M)of flexible polypropylene vent pipe,included within the 100 feet(30 M)of vent pipe. VERIFY FROM POLYPROPYLENE VENT MANUFACTURER'S INSTRUCTIONS for the multiplier correction for flexible vent pipe. Can this application use 60mm o.d.(2")polypropylene vent piping?If not,what size piping can be used? Measure the required linear length of RIGID air inlet and vent pipe;insert = 80 ft. Use length of the longer of the vent the longest of the two here:100 ft.Of rigid pipe—20 ft.Of flexible pipe (24 M) or air inlet piping system Add equiv length of (3)90°long-radius elbows (use the highest number of elbows for either the 3 x 5 ft. = 15 ft. vent or inlet pipe) (1.5 M) 0.6 M) Add equiv length of 45°long-radius elbows 0 ft. Example from polypropylene vent (use the highest number of elbows for either the 0 x — (0 M) manufacturer's instructions,Verifyfrom vent vent or inlet pipe) 3.3 ft 30 ft. manufacturer's instructions. Add equiv length of factory concentric vent term 9 x (0.9 M) (9 M) Add correction for flexible vent pipe,if any 2* x 20 ft. = 40 ft. (6.1 M) (12.2 M) *VERIFY FROM VENT MANUFACTURER'S INSTRUCTIONS;For example only,assume 1 meter of flexible 60mm(2")or 80mm(3") polypropylene pipe equals 2.0 meters(6.5 ft.)of PVC/ABS pipe. 165 ft. Total Equivalent Vent Length(TEVL) (50 M) Add all of the above lines Maximum Equivalent Vent Length(MEVL) (29 M) For 2"pipe from Table 2 Is TEVL less than MEVL? NO Therefore,60mm(2")pipe may NOT be used;try 80mm(3") Maximum Equivalent Vent Length(MEVL) X57 M) For 3"pipe from Table 2 Is TEVL less than MEVL? YES Therefore,80mm(3") pipe MAY be used 9 RETURN AIR TEMPERATURE '; This furnace is designed for continuous return-air minimum temperature of 60°F(15°C)db or intermittent operation down to 55°F(13°C) db such as when used with a night setback thermometer. Return-air temperature must not exceed 80°F(27°C)db. Failure to follow these return air limits may affect reliability of heat exchangers,motors and controls. - t K MAX 80°F /27°C SUPPLY AIR--0" FRONT 32°F/0°C MINIMUM INSTALLED °F AMBIENT OR FREEZE PROTECTION REQUIRED RETURN I t AIR -- MIN60°F / 16°C U 01 co in A10490 MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS POSITION CLEARANCE Rear 0(0 mm) Front(Combustion air openings in furnace and in structure) l in.(25 mm) Required for service** 24 in.(610 mm)* All Sides of Supply Plenum** 1 in.(25 mm) Sides 0(0 mm) Vent 0(0 mm) Top of Furnace 1 in. (25 mm) * Recommended **Consult your local building codes COMBUSTION-AIR PIPE FOR NON-DIRECT (1-PIPE) VENT APPLICATION FIELD-SUPPLIED 2-IN. (51 mm) DIA. FIELD-SUPPLIED MITERED RADIUS 2-IN. (51 mm) DIA. PVC 90° ELBOW PVC PIPE IP f— LII ,.. 12" (300 mm) MINIMUM A12376 NOTE: See Installation Instructions for specific venting configurations. 10 RESTRICTIONS IN HORIZONTAL CONFIGURATIONS F HORIZONTAL LEFT TOP RETURN NOT PERMITTED \\( C) FOR ANY MODEL. SEETABLE BELOW. ....."/ - C SUPPLY RETURN AIR AIR O 4- 0 O I , * U N 7 _ " U N rn ---4-- *RETURN *HORIZONTAL LEFT BOTTOM RETURN AIR TNOT PERMITTED FOR ALL MODELS. O SEETABLE BELOW. A14006 CASING HORIZONTAL LEFT RETURN AIR CONNECTIONS INPUT* WIDTH CONNECTION AT CONNECTION AT CONNECTION AT COMBINATION OF 1 &2 INCHES 1 ONLY 2 ONLY 3 ONLY 40,000 14 3/16 YES YES NO YES 171/2 YES YES NO YES 60,000 14 3/16 YES YES NO YES 171/2 YES NO NO YES 80,000 171/2 YES YES NO YES 21 YES YES NO YES 100,000 21 YES YES NO YES 120,000 241/2 YES YES NO YES CASING HORIZONTAL RIGHT RETURN AIR CONNTECIONS INPUT* WIDTH CONNECTION AT CONNECTION AT CONNECTION AT COMBINATION OF 1 &2 INCHES 1 ONLY 2 ONLY 3 ONLY 40,000 14 3/16 YES YES NO YES 171/2 YES YES NO YES 60,000 14 3/16 YES YES NO YES 17 1/2 YES YES NO YES 80,000 17 1/2 YES YES NO YES 21 YES YES NO YES 100,000 21 YES YES NO YES 120,000 241/2 YES YES NO YES NOTE:Not all models may be available in all casing sizes shown in the table above. 11 . N. DOWNFLOW SUBBASE LOCATING TAB r1 1/4-IN.TYP /� PLENUM l'---- I/�` �i OPENING B Th7ft.i...0001 \ D 1Th s.= LOCATING \��--'1��I TAB �� es FACTORY-SUPPLIED % '��-sj /C�� ` I` FIELD-INSTALLED �/ INSULATION �_ _--.41 A97427 A88207 Assembled Disassembled V DIMENSIONS(IN./MM) cm 0 FURNACE FURNACE IN DOWNFLOW PLENUM OPENING* FLOOR OPENING HOLE NO.FOR Om CASING WIDTH APPLICATION A B C D WIDTH ADJUSTMENT tn Furnace with or without Cased Coil 11-3/16 13-7/16 20-5/8 14-3/16(360) Assembly or Coil Box (322) 19(483) (341) (600) 4 Furnace with or without Cased Coil 15-1/8 16-3/4 20-5/8 17-1/2(445) 19(483) 3 Assembly or Coil Box (384) (426)426) (600) Furnace with or without Cased Coil 18-5/8 20-1/4 20-5/8 21 (533) (396) 19(483) (514) (600) 2 Assemblyor Coil Box 24-1/2(622) Furnace with or without Cased Coil 22-1/8 19(483) 23-3/4 20-5/8 1 Assembly or Coil Box (562) (603) (600) *The plenum should be constructed 1/4—in.(6 mm)smaller in width and depth than the plenum dimensions shown above. „trims , ,.,, 4.„iili � . ,, 14, ,, Concentric Vent Kit Downtlow Subbase A93086 A88202 A concentric vent kit allows vent and combustion-air pipes to One base fits all furnace sizes. The base is designed to be installed terminate through a single exit in a roof or side wall. One pipe between the furnace and a combustible floor when no coil box is runs inside the other allowing venting through the inner pipe and used or when a coil box other than a Carrier cased coil is used. It is combustion air to be drawn in through the outer pipe. CSA design certified for use with Carrier branded furnaces when installed in downflow applications. 12 . , MEDIA FILTER CABINET I" 25-5/8" (651 mm) 24-1/4" • 23-5/8" I. (616mm) (600mm) Opening with Flanges Bent 23-23-3/8" 588mm' (594mm) 1. ( ) — - Opening _ I � I I � I I � I I � 1 co A o I N , , 1 co i i 1 I U Furnace Side Duct Side N U I / N . in 23-3/4" - - . J (603mm) 3 ,_ Centerline Screw Slots 1 - 46m4m) Media Filter A B Cabinet 16"(406mm) 17"(432mm) 16"(406mm) 20"(508mm) 21" (533mm) 20"(508mm) 24"(610mm) 25"(635mm) 24" (610mm) NOTE: Media cabinet is matched to the bottom opening on furnace. May also be used for side return. A12428 TYPICAL WIRING SCHEMATIC ---- FIELD 24-V WIRING ---- FIELD 115-,208/230-,460-V WIRING FACTORY 24-V WIRING — FACTORY 115-V WIRING NOTE 2 FIVE WIRE cTHERMOSTAT Y Y Q Q TERMINALS FIELD-SUPPLIED THREE-WIRE I I I DISCONNECT HEATING ONLY I I i _ ___ BLOWER DOOR SWITCH I i - � 208/230-OR ---i11--- 460-V K _I I ,H f'j-�'.. BLK• 1.1 BL'`^'`--�� I I� � I Iit.L, --'--1- --- PHASE WH HT� C �la ---t--' O I -- --� N i -- 1■1 ---1 208/230-V -GND GND T r_ H -- 1 _ l SINGLE 115-V FIELD- AUXILIARY ORO - __! 1.11 - - -- 2 - I PHASE SUPPLIED J-BOX L - DISCONNECT NOTE 1 J i CONDENSING cNo a UNIT 24-V TWO TERMINAL WIRE BLOCK FURNACE NOTES: 1. Connect Y-terminal in furnace as shown for proper blower operation. 2. Some thermostats require a"C"terminal connection as shown. 3. If any of the original wire,as supplied,must be replaced,use same type or equivalent wire. A11387 13 . DIMENSIONAL DRAWING :. 1 1 91 , 1 1 04 I'l ill !DU li"" 4 i 1 I tgIV IIN ::-/ __1 . EE° � KO r• I tuiEE - --a } f'i c x--.c > - MP Mm l'�F5-IbN °s E % t U 'g1�N N E `�isi. M - U cVrNci E _ R v)cN o1E',. .;; Lui3 °.'6" ox " o - $ M 1v LI7 rN fir.Tr 71 ff icy` ti o , .2 C O O c Ot°U }II ® ® i E � o g_ � era! 1 tv E E i (1"1 11 p R �Et r a y EppEpp 01 LL y�� a2 �•E d.§QIA sg 7.‘ � �� o i-- o:�� O fd inn•` W V_ ro X ------. °-3 c I ?ii a 2 cebAgi oN k1'n>� S 'L W 000it d a1 �; QQ Ny I,_�L ii_ av o (y/�� y OL] ili RE d C1 U 3 ii Z ni M Y1• ti _a_, g 1 Ma g g� z x4 ,ab s8 l 1 ilk v —' 411111; � r : AF: �i ' , , liMP' lip fie` ' Mr 0, 1111111111.111110. rL H----- A ?,_. .„. , no , In 1 1 a pg �r 111111 L__ __ _A� 1 A180203 59SC2 A B C D SHIP WT. FURNACE SIZE CABINET WIDTH OUTLET WIDTH BOTTOM INLET WIDTH AIR INTAKE LB(KG) 040-10 14-3/16(361) 12-1/2(319) 12-9/16(322) 7-1/8(181) 121.0(55.0) 060-12 125.0(56.8) 040-12 132.0(60.0) 060-16 17-1/2(445) 15-7/8(403) 16(406) 8-3/4(222) 142.0(64.5) 080-16 151.0(68.6) 080-20 158.5(72.0) 100-16 21(533) 19-3/8(492) 19-1/2(495) 10-1/2(267) 166.5(75.7) 100-20 166.5(75.7) 120-20 24-1/2(622) 22-7/8(581) 23(584) 12-1/4(311) 184.0(83.6) 14 GUIDE SPECIFICATIONS General System Description Furnish a 4-way multipoise gas-fired Primary Heat Exchangers condensing furnace for use with natural gas or propane(factory- Primary heat exchangers shall be 3-Pass corrosion-resistant authorized conversion kit required for propane). aluminized steel of fold-and-crimp sectional design and applied Quality Assurance operating under negative pressure. Unit will be designed,tested and constructed to the current ANSI Z Secondary Heat Exchangers 21.47/CSA 2.3 design standard for gas-fired central furnaces. Secondary heat exchangers shall be of a stainless steel Unit will be third party certified by CSA to the current ANSI Z flow-through of fin-and-tube design and applied operating under 21.47/CSA 2.3 design standard for gas-fired central furnaces.Unit negative pressure. will carry the CSA Blue Star® and Blue Flame@ labels. Unit Controls efficiency testing will be performed per the current DOE test Controls shall include a micro-processor-based integrated procedure as listed in the Federal Register. electronic control board with at least 16 service troubleshooting Unit will be certified for capacity and efficiency and listed in the codes displayed via diagnostic flashing LED light on the control,a latest AHRI Consumer's Directory of Certified Efficiency Ratings. self-test feature that checks all major functions of the furnace,and a replaceable automotive-type circuit protection fuse. Multiple Unit will carry the current Federal Trade Commission Energy Guide efficiency label. operational settings available,including blower speeds for heating, U cooling. Continuous fan speed is the same as the selected heating N Delivery.Storage.and Handling speed. U Unit will be shipped as single package only and is stored and Operating Characteristics rn 14) handled per unit manufacturer's recommendations. Heating capacity shall be Btuh input; Warranty (for inclusion by specifying engineer) Btuh output capacity. U.S.and Canada only.Warranty certificate available upon request. Fuel Gas Efficiency shall be AFUE. Equipment Air delivery shall be cfm minimum at 0.50 in. Blower Wheel and PSC Blower Motor W.C.external static pressure. Galvanized blower wheel shall be centrifugal type, statically and Dimensions shall be: depth in. (mm); width dynamically balanced. Blower motor of PSC type shall be in.(mm); height in. (mm)(casing only). permanently lubricated with sleeve bearings, of hp, and Height shall be in. (mm) with A/C coil and have multiple speeds from 500-1150 RPM operating only when in.(mm)overall with plenum. 115-VAC motor inputs are provided.Blower motor shall be direct Electrical Requirements drive and soft mounted to the blower housing to reduce vibration Electrical supply shall be 115 volts,60 Hz,single-phase(nominal). transmission. Minimum wire size shall be AWG; maximum fuse size Filters of HACR-type designated circuit breaker shall be Furnace shall have reusable-type filters. Filter shall be in. amps. (mm)X in.(mm). An accessory highly efficient Media Special Features Filter is available as an option. Media Filter. Refer to section of the product data identifying accessories and Casing descriptions for specific features and available enhancements. Casing shall be of.030 in.thickness minimum,pre-painted steel. Draft Inducer Motor Draft inducer motor shall be single-speed PSC design. 15 U N 0 N am L) Copyright 2018 Carrier Corp.• 7310 W.Morris St.• Indianapolis,IN 46231 Edition Date: 10/18 Catalog No:59SC2C-07PD Manufacturer reserves the right to change,at any time,specifications and designs without notice and without obligations. Replaces:59SC2C-06PD 16 KGATWO701 HSI TWINNING KIT FOR 35-IN. (889 mm) CONDENSING GAS FURNACES Installation Instructions Please read these instructions completely before starting the TABLE OF CONTENTS installation. SAFETY CONSIDERATIONS SAFETY CONSIDERATIONS 1 DUCT CONNECTIONS 3 GENERAL-ALL ORIENTATIONS 5 WARNING INSTALL FURNACES 5 UPFLOW INSTALLATION 5 FIRE,EXPLOSION,ELECTRICAL SHOCK AND CARBON DOWNFLOW INSTALLATION 6 MONOXIDE POISONING HAZARD HORIZONTAL INSTALLATION 6 ATTIC PLATFORM INSTALLATIONS 6 Failure to follow this warning could result in personal injury,death HORIZONTAL SUSPENDED INSTALLATION 7 and/or property damage. CONNECT ELECTRICAL COMPONENTS 9 Improper installation, adjustment, alteration, service, maintenance, 115-VAC CONNECTIONS TO FURNACES 9 or use can cause carbon monoxide poisoning, explosion, fire, TWINNING KIT HARNESS CONNECTIONS 10 electrical shock, other conditions, which could result in personal CONNECT ELECTRICAL COMPONENTS-COOLING 16 injury or death. Consult a qualified service agency, local gas VENTING 24 supplier,or your distributor or branch for information or assistance. GAS SUPPLY PIPING 24 The qualified service agency must use only factory-authorized kits CONDENSATE DRAIN CONNECTIONS 24 or accessories when modifying this product. START-UP AND ADJUSTMENT 24 Improper installation, adjustment, alteration, service, maintenance, or SEQUENCE OF OPERATION 24 use can cause explosion, fire, electrical shock, or other conditions which may cause death,personal injury,or property damage. Consult A WARNING a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use ELECTRICAL SHOCK AND FIRE HAZARD factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or Failure to follow this warning could result in personal injury,death, accessories when installing. and/or property damage. Follow all safety codes. Wear safety glasses,protective clothing, and Turn off the gas and electrical supplies to the furnace and install work gloves. Have a fire extinguisher available. Read these lockout tag before performing any installation or modification. instructions thoroughly and follow all warnings or cautions include in Follow the operating instructions on the label attached to the literature and attached to the unit. Consult local building codes, the furnace. current editions of the National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1 and the National Electrical Code(NEC)NFPA 70. CAUTION In Canada, refer to the current editions of the National Standards of Canada CAN/CSA-B149.1 and .2 Natural Gas and Propane CUT HAZARD Installation Codes,and Canadian Electrical Code CSA C22.1 Failure to follow this caution may result in personal injury. Recognize safety information. This is the safety-alert symbol Sheet metal parts may have sharp edges or burrs.Use care and wear When you see this symbol on the unit and in instructions or manuals, appropriate protective clothing, safety glasses and gloves when be alert to the potential for personal injury. handling parts,and servicing furnaces. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death.CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation,reliability,or operation. ti INTRODUCTION Twinned two-stage furnaces can only operate as staged units.With the • This furnace twinning kit permits connection to the following furnaces two-stage furnaces, low-heat in both furnaces is used for first-stage heat, and high-heat in both furnaces is used for second-stage heat. to operate as a single unit on the same duct work.The furnaces must Two-stage furnaces can be configured to use a field supplied be installed with common supply and return plenums. For upflow single-stage thermostat and the furnace control staging algorithm or installations,the common return plenum or platform must use some or can use a field supplied two-stage thermostat to control the staging. • all of the bottom return opening as shown in the DUCT Refer to the CONNECT ELECTRICAL COMPONENTS section for CONNECTIONS section. This kit ensures both furnace blowers two-stage thermostat details. operate simultaneously so air flows through the duct work rather than recirculating in a loop between the furnaces. Cooling units used with twinned furnaces must be single-stage A/C Twinned single-stage furnaces can operate as a single unit or as staged unit(s).Heat pumps cannot be twinned with gas furnaces. units.With staged single-stage furnaces,the left-hand furnace is used When installing twinned outdoor units with twinned gas furnaces, it is for first-stage heat,and both furnaces are used for second-stage heat. necessary to use a field-supplied 24-VAC pilot-duty relay and a A field supplied two-stage thermostat is required for staged operation field-supplied 24-VAC/115-VAC transformer as shown in the of single-stage furnaces.Staged heating operation of twinned furnaces individual wiring diagrams to prevent overloading furnace is permitted only with this twinning kit. 24-VAC/115-VAC transformer. Table 1 Models SINGLE STAGE PSC 59SC2A060-10 912SA30060 PG92SAS30060 59SC2A060-14 912SA42060 PG92SAS42060 59SC2A080-16 912SA48080 PG92SAS48080 59SC2A080-20 912SA60080 PG92SAS60080 59SC2A100-14 912SA42100 PG92SAS42100 59SC2A100-20 912SA60100 PG92SAS60100 59SC2A120-20 912SA60120 PG92SAS60120 59SC5A060-10 915SA30060 PG95SAS30060 59SC5A060-14 915SA42060 PG95SAS42060 59SC5A080-16 915SA48080 PG95SAS48080 59SC5A080-20 915SA60080 PG95SAS60080 59SC5A100-14 915SA42100 PG95SAS42100 59SC5A100-20 915SA60100 PG95SAS60100 59SC5A120-20 915SA60120 PG95SAS60120 SINGLE STAGE ECMx 59S P5A060-14 925SA42060 59SP5A080-16 925SA48080 59SP5A080-20 925SA60080 59SP5A100-20 925SA60100 59S P5A120-22 925SA66120 TWO STAGE ECMx 59TP5A060-14 925TA42060 PG95XAT42060 59TP5A080-16 925TA48080 PG95XAT48080 59TP5A080-20 925TA60080 PG95XAT60080 59TP5A100-16 925TA48100 PG95XAT48100 59TP5A120-22 925TA66120 PG95XAT66120 Table 2 Kit Contents DESCRIPTION AND USAGE QUANTITY DESCRIPTION IMPORTANT: Only the furnace sizes listed in Table 1 can be 1 Extension Harness Assembly twinned with this kit. Both furnaces must have the same product 1 Main Twinning Harness Assembly number, including heating and cooling sizes, to achieve correct 1 Secondary Twinning Harness Assembly operation.One furnace is the Main furnace and the other furnace is the 1 Two-Stage Label Secondary furnace. The Main furnace controls the operation of the Secondary furnace. All control connections are made to the Main 1 Single-Stage Deluxe Label furnace and Main furnace wiring harness. 1 Single-Stage Label Twinned furnaces in these instructions are also referred to as the 2 Seal Tape left-hand furnace(LH)and right hand furnace(RH)or back-to-back. 1 Reference Label NOTE: To determine referencing of Left Hand(LH)and Right Hand 1 Instructions (RH)furnace: 2 a. In the Side-by-Side,upflow and downflow applications, SECTION 1: reference the furnaces from the front,as you would see them in the upflow application.(See Figure 2 and DUCT CONNECTIONS - ALL Figure 3)The LH furnace is the Main furnace and the RH MODELS furnace is the Secondary furnace. b. In the Back-to-Back,upflow,downflow and horizontal For all furnaces: All furnaces must have a common supply plenum applications,reference the furnaces from the side of the attached to the furnaces or evaporator coils prior to any branch supply external extension harness.The LH furnace is the Main trunk or take-off.The height of the plenum should be at least as high furnace and the RH furnace is the Secondary furnace,as (upflow/downflow)or as long(horizontal)as the width of one furnace. you would see them in the upflow application.(See Supply air dampers, when used, should be installed in the branch Figure 1 and Figure 3.) ducts, not in the common plenum. Fire or smoke dampers, when required by code, may be installed in the common plenum. Refer to Kit contents are shown in Table 2. the damper manufacturer's ratings installation instructions for proper Staged heating operation is permitted only with this twinning kit.With application. The damper should not create undue restriction in the single-speed condensing furnaces, the left-hand furnace is used for open position. first-stage heat, and both furnaces are used for second-stage heat. All furnaces must be installed to ensure sufficient return air to both With the two-stage condensing furnaces, low-heat in both furnaces is furnaces: used for first-stage heat, and high-heat in both furnaces is used for second-stage heat. This kit ensures both furnace blowers operate For upflow furnaces: A combination of one full side of each and simultaneously so air flows through the duct work rather than bottom inlet plenum or bottom only inlet plenum shall be used for recirculating in a loop between the furnaces. return air to each furnace.The preferred method is to have all return air brought into the bottom of the furnaces through a common bottom ik WARNING plenum.The bottom return-air plenum shall be at least as high as the width of the furnace bottom return-air opening. For example, if two 17 1/2-in. (445 mm) wide furnaces are twinned together, the full UNIT AND PROPERTY DAMAGE HAZARD height common return air plenum must be at least 17 1/2-in. (445 Failure to follow this warning could result in unit and property mm) tall. When there are height limitations, the bottom return-air damage. plenum height can be reduced to 8-in. (203 mm) minimum if one entire side return-air opening of each furnace is used in conjunction A non-condensing furnace shall NOT be twinned with a with the bottom return opening.The rear of the furnace casing cannot condensing furnace. Two-stage condensing or non-condensing be used for all or part of the return air connection. If rear return air furnaces shall not be twinned with any single-stage furnace.Do not connections are required, connect the return air duct to the rear of the twin furnaces that have a different number of blower motor speed return air plenum.Connect all return trunks or branch return ducts to taps together.Furnaces shall only be twinned in the positions shown. common return plenum.(See Figure 2) Variable-speed furnaces shall not be twinned. For downflow and horizontal furnaces: All return air must be Figure 1 External Extension brought into the bottom opening of the furnace through a common return air plenum. The return-air plenum shall be at least as long -t--t- (horizontal)or tall (downflow) as the width of the furnace return-air opening. Connect all returntrunks or branch return ducts to common return plenum.(See Figure3) 4- ---(4)- i► WARNING FIRE HAZARD Failure to follow this warning could result in improper auxiliary limit operation,fire,personal injury or death. Do not remove the center return air partitions between the furnaces. NOTE: Throughout these instructions, when the furnace installed ,''llt1111111Q1111111111101111111Q11110111111111111111111111�1�1111Q11111111111 111111111 side-by-side, the left-hand (LH) side will be referred to as the LH Mil furnace, and the furnace installed on the right-hand (RH)side as the RH furnace. When the furnaces are installed back-to-back, the left-hand (LH) side will be referred to as the LH furnace, and the furnace installed on the right-hand(RH)side as the RH furnace when EXTERNAL EXTENSION / viewed from the side with the extension harness installed. UNUSED 7/8 in.(22 mm)KNOCKOUTS L11F102 3 . 1 ' Figure 2 Upflow Ductwork Connections Common A Supply Air Plenum Common A Supply Air Ilr _ ♦ Plenum .- ---NReturn Air Return Air III j ,) ..> , ap7 It) bid 0 ® e 9 ® ea Hi B B l Common Return Air 8"(203 Plenum mm)MIN 4 Ll1F093 L11F094 NOTE: Upflow-Single Return NOTE: Upflow-Two Returns Return duct cannot obstruct access to either furnace When furnaces are installed Back-to-Back (not shown) return duct Return Air can enter through any combination of: MUST connect to the common return plenum and side inlet of BOTH a. Left side only furnaces b. Right side only Return duct cannot obstruct access to either furnace c. Bottom only d. Back of platform when height of platform equal Dimension "A"as shown Figure 3 Downflow/Horizontal Ductwork Connections Common Return Air A Plenum A _pp. Common Common Return Air Supply Air 'Plenum I N) ty I 64 64 Plenum ' 6) 66 116 i9 A ///I Common Supply Air A Plenum L11F095 L11F096 NOTE: Downflow Application NOTE: Horizontal Application Do not connect return air to any side of the furnace Do not connect return air to any side of the furnace Connect return air plenum as shown Do not stack condensing furnaces on top of each other Dimension"A"must equal to the front width of one furnace NOTE: As a result of staged heating with single-speed furnaces,the NOTE: Refer to the Installation,Start-Up,and Operating Instructions air temperature distribution in the supply plenum may be uneven when supplied with each furnace for information on venting, clearances, only one furnace is heating. start-up, maintenance, and other information not covered in this publication. 4 ELECTROSTATIC DISCHARGE (ESD) Figure 4 Removing Bottom Closure Panel PRECAUTION • . Q o .d• 0 i► CAUTION0i/ a UNIT DAMAGE HAZARD I Failure to follow this caution may result in unit and component I damage. I 7 Failure to follow this caution could result in unit and component I I \I, damage. Electrostatic discharge can affect electronic components. I rl I Take Precautions during furnace installation and servicing to protect ` I rI the furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are held during the I BOTTOM procedure.These precautions will help to avoid exposing the control \ I I CLOSURE to electrostatic discharge by putting the furnace,the control and the I PANEL person at the same electrostatic potential. \ 1. Disconnect all power to the furnace. DO NOT TOUCH THE FRONT FILLER CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY'S PANEL 1,11F004 ELECTROSTATIC CHARGE TO GROUND. 3. Apply two factory-supplied foam strips to mating side of one 2. Firmly touch a clean, unpainted, metal surface of the furnace furnace. Locate strips equal distance from top and bottom as chassis which is close to the control. Tools held in a person's shown in Figure 5. 4. Refer to the appropriate orientation to install the furnaces. hand during grounding will be satisfactorily discharged. 3. After touching the chassis you may proceed to service the Figure 5 Location of foam Strips control or connecting wires as long as you do nothing that - recharges your body with static electricity (for example; DO - NOT move or shuffle your feet, DO NOT touch ungrounded objects,etc.). 4. If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touching control or wires. FOR BACK-TO-BACK APPLICATIONS,APPLY 5. Use this procedure for installed and uninstalled (ungrounded) FOAM STRIPS AT THIS FOAM furnaces. HEIGHT,ALONG BACK STRIPS OF FURNACE 6. Before removing a new control from its container, discharge v N your body's electrostatic charge to ground to protect the control J from damage. If the control is to be installed in a furnace, NiN r follow items l through 5 before bringing the control or yourself into contact with the furnace. Put all used AND new controls into containers before touching ungrounded objects. 7. An ESD service kit (available from commercial sources) may nronn also be used to prevent ESD damage. UPFLOW INSTALLATION SECTION 2: NOTE: When the furnaces are positioned back-to-back,the external GENERAL - ALL ORIENTATIONS extension harness cannot be used on the same side of the furnace that the return air ducts connect to. Locate harness on opposite side of Install furnaces furnace where return air is used. NOTE: Multipoise units can be installed in UPFLOW, 1. Remove the 7/8-in. (22 mm) knockout in the mating side of DOWNFLOW,or HORIZONTAL configurations. each furnace blower compartment. Remove one right side knockout from one furnace and the left side knockout from the Refer to furnace Installation, Start-Up, and Operating Instructions or other furnace. The furnace with the right side knockout Product Specifications for appearance and dimensional drawing of removed will become the Main furnace in side-by-side twinned furnaces and their connection locations. applications. In back-to-back applications, either furnace can NOTE: Follow all clearances for combustibles and service as be the Main furnace. shown in the individual furnace installation instructions 2. For side-by-side applications insert one snap bushing through 1. Select two identical heating and airflow furnaces.(See Table 1) each 7/8-in.(22 mm)knockout. 2. Remove bottom closure panels from both furnaces. (See 3. Position furnaces against each other on common return-air Figure 4) plenum (See Figure 2). For side-by-side installations, adjust a. Remove main and blower access doors. and shim each furnace to align 7/8-in. (22 mm) knockout in blower compartment, which will be used for wire routing b. Remove screws from front filler panel. c. Rotate front filler panel downward to remove. between furnaces. d. Remove bottom closure panel and set aside. 4. Drill two 1/8-in. (3 mm) holes, approximately 1-in. (25 mm) below discharge air flange, from inside top of discharge e. Reinstall front filler panel. opening and through both furnaces.(See Figure 6) 5 5. Drive 1 factory-supplied No. 6 x 3/4-in. (19 mm) LG screw 6. Drive 1 factory-supplied No. 6 x 3/4-in. (19 mm) LG screw through each hole and tighten until furnaces are secure and through each hole and tighten until furnaces are secure and foam strips have sealed gap between furnaces. foam strips have sealed gap between furnaces. 6. Bend or remove flanges on supply air outlet of furnace as 7. Connect common return plenum to furnaces. Seal all duct shown in furnace installation instructions. connections to furnace with code approved tape or sealant. 7. Install indoor coil(s)and/or common supply plenum on supply Attaching Furnaces Together at Return air outlet of furnace. Seal all duct connections to furnace with Figure 7 Air Opening code approved tape or sealant. 8. Connect common return plenum on furnace. Seal all duct connections to furnace with code approved tape or sealant. A. WARNING // / UNIT DAMAGE AND FIRE HAZARD Al I I I 1 F1 \ Failure to follow this warning could result in unit damage, fire, personal injury or death. DO NOT use the back of the furnace for return-air duct connections as limit cycling will occur. 9. Refer to the furnace installation instructions to complete the remaining furnace installation. Figure 6 Furnaces Together at Discharge Mink Opening A022I9 SCREW DISCHARGE OPENINGS TOGETHER AL WARNING [)rr UNIT DAMAGE AND FIRE HAZARD / D=1 Failure to follow this warning could result in unit damage, fire, I personal injury or death. DO NOT use the back or side of the furnace for return-air duct connections as limit cycling will occur. 1 8. Follow individual furnace installation instructions for downflow applications. This includes, but not limited to: condensate trap, condensate/inducer housing tubing, pressure switch tubing venting and electrical connections. 9. Go to Connect Electrical Components A'13539 HORIZONTAL INSTALLATION DOWNFLOW INSTALLATIONS NOTE: When the furnaces are positioned back-to-back, the external General extension harness cannot be used on the same side of the furnace that When twinning furnaces in the horizontal position,consideration must the return air ducts connect to. Locate harness on opposite side of be made to the type of building construction. Attic floors should be furnace where return air is used. constructed to support normal live and dead loads of the furnaces and 1. Remove the 7/8-in. (22 mm) knockout in the mating side of the person(s)servicing them.Trusses,wood and metal are engineered each furnace blower compartment. Remove one right side for specific applications, and may not support the weight of two (2) furnaces suspended from the top chords or by the bottom chords of the knockout from one furnace and the left side knockout from the trusses.Long horizontals spans may flex or sag,resulting in damage to other furnace. The furnace with the right side knockout the building. Contact the truss manufacturer for additional design and removed will become the Main furnace in side-by-side engineering assistance.Do not suspend furnaces with straps or suspend applications. In back-to-back applications, either furnace can furnaces from roof decking. be the Main furnace. Allow a minimum of 2-in. (51 mm) clearance below the unit for 2. Insert one snap bushing through each 7/8-in. (22 mm) condensate drain connections. knockout. 3. Bend or remove flanges on supply air outlet of furnace as Attic Platform Installations shown in furnace installation instructions 1. Construct a platform from 3/4-in.(19 mm)(nominal plywood), 4. Position furnaces in the downflow position on the entering extending out 30 inches (762 mm) from the front of each air-side of indoor coils and or common supply plenum. If no furnace.(See Figure 8) approved cased indoor coil is used, install the furnaces on 2. Maintain all clearances to combustibles per the furnace accessory combustible floor bases. For side-by-side Installation,Start-up and Operating Instructions. installations, adjust and shim each furnace to align unused 3. Follow all additional building codes. 7/8-in. (22 mm)knockout in blower compartment,which will 4. Long truss spans may require additional support along the be used for wire routing between furnaces. bottom chord of the truss. Consult the truss manufacturer's 5. Drill two 1/8-in. (3 mm)holes, approximately 1-in. (25 mm) guidelines for engineering assistance. below return air flange, from inside top of return air opening and through both furnaces.(See Figure 7) 6 5. Long rafter or attic joist spans may require additional support 3. Each piece of angle iron must be secured to the bottom of each along the bottom of the rafter or joist.Consult local or regional furnace with at least two (2)#8 x 3/4-in.(19 mm)sheet metal building codes for design and loading requirements. screws. 6. Lay both furnaces in the required orientation with the 4. Drill four 5/16-in. (8 mm) holes through the angle iron and knockouts in the blower compartment facing upward. through each side of the casing for the suspension rods as 7. Drill two 1/8-in. (3 mm) holes, approximately 1-in. (25 mm) shown in Figure 9. below return air flange, from inside top of return air opening 5. Lay furnaces back-to-back on a flat surface with 7/8 and through both furnaces.(See Figure 7) knock-outs facing upward. 8. Drive 1 factory-supplied No. 6 x 3/4-in. (19 mm) LG screw 6. Drill two 1/8-in. (3 mm)holes, approximately 1-in. (25 mm) through each hole and tighten until furnaces are secure and below return air flange, from inside top of return air opening foam strips have sealed gap between furnaces. and through both furnaces.(See Figure 7) 9. Drill two 1/8-in. (3 mm)holes, approximately 1-in. (25 mm) 7. Drive one factory-supplied No.6 x 3/4-in.(19 mm)LG screw below discharge air flange, from inside top of discharge through each hole and tighten until furnaces are secure and opening and through both furnaces.(See Figure 6) foam strips have sealed gap between furnaces. 10. Drive 1 factory-supplied No. 6 x 3/4-in. (19 mm) LG screw 8. Drill two 1/8-in. (3 mm)holes, approximately 1-in. (25 mm) through each hole and tighten until furnaces are secure and below discharge air flange, from inside top of discharge foam strips have sealed gap between furnaces. opening and through both furnaces.(See Figure 6) 11. Install indoor coil(s)and/or common supply plenum on supply 9. Drive one factory-supplied No.6 x 3/4-in.(19 mm)LG screw air outlet of furnace. Seal all duct connections to furnace with through each hole and tighten until furnaces are secure and code approved tape or sealant. foam strips have sealed gap between furnaces. 12. Connect common return plenum to furnaces. Seal all duct 10. Insert the 1/4-in.(6 mm)threaded rod through each hole in the connections to furnace with code approved tape or sealant. furnace and through the angle iron.Secure the threaded rod to 13. Follow individual furnace installation instructions for the angle iron with a washer,lock washer and nut. horizontal applications. This includes, but not limited to: 11. To prevent the rod from falling out of the furnace, install a condensate trap, condensate/inducer housing tubing, pressure washer, lock washer and nut on portion of the threaded rod switch tubing venting and electrical connections. above the furnace. 14. Go to Connect Electrical Components. 12. Raise and suspend the furnaces using the appropriate lift and secure the threaded rod with the appropriate field-supplied AL WARNING hardware.Use locking hardware such as lock washers and jamb nuts to prevent nuts or bolts from loosening. UNIT DAMAGE AND FIRE HAZARD 13. Install indoor coil(s)and/or common supply plenum on supply air outlet of furnace. Seal all duct connections to furnace with Failure to follow this warning could result in unit damage, fire, code approved tape or sealant. personal injury or death. 14. Connect common return plenum to furnaces. Seal all duct DO NOT use the back or side of the furnace for return-air duct connections to furnace with code approved tape or sealant. connections as limit cycling will occur. 15. Follow individual furnace installation instructions for Horizontal Suspended Installation horizontal applications. This includes, but not limited to: condensate trap, condensate/inducer housing tubing pressure 1. Furnaces may be suspended using two(2)pieces of 1-1/2-in.x switch tubing venting and electrical connections. 1-1/2-in.x 1/4-in.(38 mm x 38 mm x 6 mm)thick cold rolled 16. Go to Connect Electrical Components. angle iron underneath each furnace and four (4) 3/8-in. (10 mm)diameter threaded rods.Angle iron must be positioned as shown in Figure 9. WARNING 2. Unistrut or similar material may be used, provided that the furnaces do not sag in the middle or bend or twist at the support UNIT DAMAGE AND FIRE HAZARD ends. The support material must be secured to the bottom of Failure to follow this warning could result in unit damage, fire, each furnace in a manner similar to securing angle iron to the personal injury or death. furnace. DO NOT use the back or side of the furnace for return-air duct connections as limit cycling will occur. 7 . Figure 8 Attic Installation of Furnace COMBUSTION-AIR INTAKE VENT EXTERNAL EXTENSION TWINNING HARNESS COMMON RETURN _ r...,., _. 30(762mm)MIN 111111 WORK AREA 2" . �,, ► a 30(762mm)MIN WORK AREA t . �``IA mis�I MANUAL \ " SHUTOFF ill GAS VALVE I 1 ACCESS OPENING I FOR TRAP SEDIMENT TRAP ROLLOUT PROTECTION REQUIRED CONDENSATE INSTALL 12" X 22" (305 X 559mm) TRAP SHEET METAL IN FRONT OF BURNER COMPARTMENT AREA. L11F0101 Figure 8 Attic Installation of Furnace (cont.) Combustion Air In- take Vent / Twinning Kit Extension Harness 1 _ Common Return I+ �r- �.Combustion Air In- `- / take 14 Vent •• Manual Shutoff Gas / Valve IIIIIII 11 I i :,. Sediment Trap ® I ® Manual Shutoff Gas Valve ® ® Sediment Trap I,. 4-3/4" Sheet Metal 12" 30" Work Platform I/ It----------c---__ L11F105 8 ` Figure 9 Suspended Installation of Furnace II 1/4"(6.4)ROD HEX A\^` 1,11.**********.s. 0 I I ■- ,1 NUT&WASHER II I III 9I I 2"(51) 1 1I III �� 0I I II - ' 0 0 \ 1 ii 1 0 III /,° -0 (A) o �, o (B) ` ° 0 0 i\ r:ft.-1o o ` 0 4, (B) (B) 0 0 DRAIN jeklit illilli (B) 0 0 , , 1/4"(6.4)ROD HEX �� 'i:�.. P.NUT&WASHER ".11111110... (B) USING(B)LOCATION 0 , w (A) 4"TO 8"MAX(101.6 TO (A) ( 0 203.2mm) (A)ROD LOCATION USING /\ 411104%;".� (A) N. USING(B)LOCATIONS DIMPLE LOCATORS(SEE DI- + (B) 13/16 MAX FROM BACK OF FURNACE MENSIONAL DWG FOR LOC- 1-1/2"(38)ANGLE ATIONS) OR EQUIVALENT (A) (B) (A)PREFERRED ROD LOCATION (B)ALTERNATE ROD LOCATION L11 F099 SECTION 3 115-VAC CONNECTIONS TO Connect Electrical Components FURNACES A. WARNING A WARNING UNIT DAMAGE AND FIRE HAZARD ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in fire,personal injury or death. Failure to follow this warning could result in personal injury or death,or property damage. Make no connections between the R 24-VAC connection in one furnace and the R 24-VAC connection in other furnace. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position and See Electrostatic Discharge Precaution Section. install a lockout tag. There may be more than one NOTE: All electrical power connections must be made through disconnect switch. Check accessories and cooling unit for exposed outer side of each furnace. Do not common connect any additional electrical supplies that must be shut off during connection other than supply-and return-air ducts. furnace servicing. Lock out and tag switch with a suitable pp y warning label. Verify proper operation after servicing. • Side-by-side furnaces in the upflow and downflow position,the LH furnace line voltage connections must be Each furnace shall be connected to its own 115-VAC power supply. made on the left side of the furnace.The RH furnace line The twinning kit installation interconnects the furnaces,allowing them voltage connections must be made on the right hand side of the casing. to operate as a single furnace. The Ll (black) connection to each furnace must be connected to circuit breakers connected to the same • Horizontal back-to-back installations,electrical connections service panel 115-VAC phase leg. should be made on the sides of the furnace facing up. NOTE: If the furnaces are not connected to the same phase leg of the • Upflow and downflow back-to-back installations can use electrical power supply,the furnaces will not operate properly. either side of the furnace for line voltage electrical • On single-phase(residential)systems,each furnace circuit connections. breaker should be located directly across from each other in service panel,or each furnace circuit breaker should be located on the same side of service panel,but must skip one space to be connected to the same leg of the single-phase power supply. • On 3-phase(commercial)systems,each furnace circuit breaker should be located directly across from each other in service panel,or each furnace circuit breaker should be located on the same side of service panel,but must skip two spaces to be connected to the same leg of the 3-phase power supply. 9 The proper 115-VAC phasing of furnace connections permits TWINNING KIT HARNESS 24-VAC transformer phasing as described below. CONNECTIONS Phasing of the connected 24-VAC transformer secondary circuits can be determined with the LED status of both furnaces. NOTE: There are three harnesses included in this kit.If the furnaces See furnace Installation, Start-Up, and Operating Instructions and are side-by-side,only the Main and Secondary harnesses are required. status code labels on blower doors.The furnaces'transformers' black If the furnaces are installed back-to-back, the extension harness leads should be connected to PR1 connectors and white leads to L2 included in the kit must be used. connectors on controls. If one or both LEDs are rapidly flashing, Extension harness is shown in Figure 10. disconnect lead at TWIN/TEST terminal of LH furnace and observe To install the Extension harness on back-to-back furnace, follow the LED at each furnace. steps in Figure 10.For other orientations,omit this step. To verify that the furnaces are in phase,check from Main furnace Ll The Main furnace end of the harness is identified by a white label to Secondary furnace Ll with a voltmeter.If the furnaces are in phase, marked"MAIN" on the label near the end of the extension harness. the voltage between both furnaces will be ZERO. The Secondary furnace end of the harness is identified by a white label IF: marked "Secondary" on the label near the end of the extension a. Both LEDs are on continuously:System phasing is okay. harness. b. One or both LEDs are rapidly flashing: 1. Verify the knockouts are removed from the same side of each (1.) Line voltage polarity is reversed. furnace blower compartment. (2.) Furnace(s)are not grounded 2. Remove the locknut from each end of the 1/2-in.BX connector (3.) Transformer polarity is reversed. 3. Route the 4-pin plug and the 2-pin plug of the Main furnace c. One LED is off,one LED is on continuously: end of the Extension harness one at a time through the (1.) The 24-VAC circuit is inoperative on furnace with knockout into the Main furnace blower compartment. LED light off. 4. Insert the plugs through the locknut of the 1/2-in. BX (2.) Check transformers,auxiliary limits,and door switches connector and tighten the locknut on the BX connector. in both furnaces and correct problem. 5. Route the 4-pin plug and the 2-pin plug of the Secondary (3.) Reconnect lead at TWIN/TEST terminal of LH furnace end of the Extension harness one at a time through the furnace and observe LED at each furnace.The LEDs knockout into the Secondary furnace blower compartment. will glow steady for proper phasing. 6. Insert the plugs through the locknut of the 1/2-in. BX connector and tighten the locknut on the BX connector. Figure 10 Extension Harness 90 t LECTRICAL CONNECTOR 90°ELECTRICAL WHITE CONNECTOR WIRE ASSY. 1 RED .'%11"11A��`��III��I��`��1��`�IS WIRE ASSY. BLACK BLUE WIRE ASSY LABEL i:\v WIRE ASSY. // ORANGE YELLOW �j �, WIRE ASSY WIRE ASSY. 1P �J PLUG RECEPTACLE PLUG LABEL RECEPTACLE L11F087 Install Main Twinning Kit Harness 3. Connect the Red transformer lead removed from the Main furnace control board to the Red wire labeled"TRANS"on the NOTE: If the furnaces are installed back-to-back, verify which Main Twinning Kit harness. furnace is the Main furnace before installing Twinning Kit Harnesses. 4. Connect the Orange wire labeled "SEC 1" to the "SEC-1" Refer to the tag on the ends of the Extension harness used for terminal on the Main furnace control board. back-to-back installations. 5. Connect the Black wire with the fork terminal labeled "C"on The Main Twinning Kit harness is identified by a white label marked the TKR to the"COM/24V"terminal on the thermostat strip of "MAIN"on the label near the two pin receptacle of the Main Auxiliary the Main furnace control board. Limit Switch (ALS-M) leads. The Twinning Kit Relay (TKR) and 6. Install the Twinning Kit Relay,(TKR) Main Auxiliary Limit Switch(ALS-M)mount to the blower housing as shown in Figure 11.The individual leads are labeled on the harness. a. For single-stage operation of single-stage furnaces connect (See Figure 12) Refer to Figure 14, Figure 15, and Figure 16 for the White wire with the fork terminal labeled"W"on the location of control board components.Connect the Main Twinning Kit TKR to the"W"terminal on the thermostat strip of the harness to furnace control board as follows: Main furnace control board.See Figure 17. 1. Connect the Yellow wire labeled"TEST"to the"TEST/TWIN" b. For staged operation of single-stage furnaces with a terminal on the Main furnace control board. two-stage thermostat,remove the fork terminal from the 2. Remove the Red transformer lead from the "SEC-1"terminal terminal on the TKR and discard.The thermostat W2 lead on the Main furnace control board. is spliced into this wire.Refer to Figure 18 and Thermostat Connections section for details. 10 , c. For operation of two-stage furnaces with a single-stage or 4. Connect the Red wire with the fork terminal labeled "R two-stage thermostat,connect the White wire with the fork SECONDARY"to the"R" terminal on the thermostat strip of terminal on the TKR to the"W/Wl"terminal on the the Secondary furnace control board. thermostat strip of the Main furnace control board.Refer to 5. Remove the Red transformer lead from the "SEC-1"terminal Figure 19 and Thermostat Connections section for details. on the Secondary furnace control board. Install Secondary Twinning Kit Harness 6. Connect the Red wire with the piggy-back terminal labeled The Secondary Twinning Kit harness is identified by a white label "SEC-1" on the ILR to the "SEC-1" terminal on the marked "SECONDARY" on the label near the two pin plug of the Secondary furnace control board. Auxiliary Limit Switch (ALS-S) leads. The Door Interlock Relay 7. Connect the Red transformer lead to the piggy back terminal of (ILR)and Secondary Auxiliary Limit Switch (ALS-M)mount to the the Red wire connected to the "SEC-1" terminal on the blower housing as shown in Figure 11. The individual leads are Secondary furnace control board. labeled on the harness. See Figure 13. Connect the Secondary 8. Remove the Blue transformer lead from the"SEC-2"terminal Twinning Kit harness to furnace control board as follows: on the Secondary furnace control board. 1. Connect the Yellow wire labeled"TEST SECONDARY"to the 9. Connect the Black wire with the piggy-back terminal labeled "TEST/TWIN" terminal on the Secondary furnace control "C" on the ILR to the "SEC-2" terminal on the Secondary board. furnace control board. 2. Connect the Black wire with the fork terminal labeled "C 10. Connect the Blue transformer lead to the piggy back terminal of SECONDARY"to the"COM/24V"terminal on the thermostat the Black wire connected to the "SEC-2" terminal on the strip of the Secondary furnace control board. Secondary furnace control board. 3. Connect the White wire with the fork terminal labeled "W SECONDARY" to the "W" or "W/W1" terminal on the thermostat strip of the Secondary furnace control board. Figure 11 Mounting Twinning Kit Relay AuxiliaryDoor i El i`�4t i 1N s.5+��`,IK] l) ' — — Switches r ;111 Ilirillei �uI -A. qua 1 I1 4.5,. r>fir/ �S - ' _'1 .....-, . 114 m _ ®® _ �>f1 )p.., 11 =-+�f AS t�. .� a �•.��`, ail __F____ ,, . _ _ __ __ _ .... iiii. _ E 12 (305mm) ■ /- II Twinning Kit Relay ' 1 I I I' I and Interlock Relay i t l .7 t li 1111 j�jl � 1 1 , . .. - AuxiliaryLimit / Switches L12F00t NOTE: a. Mount Twinning Kit Relay and Interlock Relay on furnace blower housing as shown. b. Twining Kit Relay(TKR)mounts on LH Furnace blower housing c. Interlock Relay(ILR)mounts on RH furnace blower housing. 11 Figure 12 Main Harness WHITE WIRE ASSY. - 'l BLACK WIRE ASSZVO BACK / BLACK Q WIRETIE WHITE to BLACK WIRE ASSY. f RELA 0 RED WIREASSY. • `` WHITE WIRE ASSY. )/ 1010;4'. '/'/,t / O WHITE , Y • REDI 447: = --1/ .1n1 Eal RECEPTACLE YELLOW WIRE ASS . REF BLUE WIRE ASSY ( _ MAIN �� RELAY WIRE CONNECTION iugAACE SCREW Mili \ (2)REQ'D. RECEPTACLE CONTROL SAFET' LABEL BRACKET WIRE TIE • ORANGE WIRE ASSY. / "-I.Utip.I.41—./ EU SEC-1 c Nig 7 : El a El RED WIRE ASSY. L12 F003 12 , Figure 13 Secondary Harness WIRE TIE YELLOW WIRE ASSY. BLACK WIRE ASSY. TEST SECONDARY C SECONDARY I IZ i - V % W SECONDARY neic PLUG % R SECONDARY ORANGE WIRE ASSY. % ASD WIRE WHITE WIRE ASSY. 7 SECONDARY /// ORANGE WIRE ASSY. /O I PLUG LABEL/BLUE WIREASSY. / 11-1.MII ((0) U•I-11- ii r 7 r(11 w w BRACKET ISI, i Ill 0 RED WIRE ASSY - BLACK WIRE ASSY AUXILLARY LIMIT i LI 1 -1 II ORANGE SCREW (2)REQ'D RELAY BLUE © �I� 1 Ali. Iii j^ , 00../.-4-uI '1'`/' 0 BLACK 110/ .40, 11111 RED I II. kttfil !ii 1141101 �I a RELAY i� till L12F003 13 Figure 14 Example of Single Stage Furnace Control for PSC Blower Motor TWINNING AND/OR BLOWER OFF-DELAY COMPONENT TEST TERMINAL \\ J2 JUMPER BLOWER OFF-DELAY 0 �Bo HUMIDIFIER TERMINAL , (24-VAC 0.5 AMP MAX.) 24-V THERMOSTAT " 0 , TERMINALS 4 0 TRANSFORMER 24-VAC < 0 TEST TWIN CONNECTIONS p 0 HUM 0.5 A..-@ -'AC 3-AMP FUSE _)11 FUSE • P c o o n SEC-2 SEC-1 0 LED OPERATION & P'° nC-z L2 DIAGNOSTIC LIGHT ti 0 / PL1-LOW VOLTAGE MAIN 115-VAC(L2)NEUTRAL— = o HARNESS CONNECTOR CONNECTIONS o - ° EAC-1 TERMINAL 115-VAC 1.0 AMP MAX.) 0 0 0 COOL- 1=1 101 HEAT ► '1.=1 EOOD SPARE-1 SPARE-2 SPARE-3 PR-1 PL2 1 SPARE 1 ir 115 VAC (L1) LINE PL2-HOT SURFACE SPARE-2 VOLTAGE CONNECTION IGNITER& INDUCER BLOWER SPEED S ARE 3 MOTOR CONNECTOR SELECTION TERMINALS A11619 14 Figure 15 Example of Single Stage Furnace Control for ECM Blower Motor , v moo ,3;-.0111(— BLOWER OFF-DELAY O O E C 24-V THERMOSTAT G) TERMINALS N (') < 3 TWINNING AND/OR i COMPONENT TEST * e TEST/TWIN TERMINAL � 1 HUM � N -- -1'1 — (24-VAC 0.5 AMP MAX) O HUMIDIFIER TERMINAL O24VA � @AC 3-AMP FUSE FUSE3AMP TRANSFORMER 24VAC 0 CONNECTIONS 0 0 SEC-2 SEC-1 0 OOO ‘9,\ LED o R1 OPERATION& ❑ PL1-LOW VOLTAGE MAIN ( C DIAGNOSTIC ❑ HARNESS CONNECTOR LIGHT r- 0 COM D a 0 HEAT < ❑ BLOWER SPEED o SELECTION TERMINALS 4 'D 0 FAN 1 y I ❑ EAC TERMINAL PL-2 HOT SURFACE SPARE2 (115 VAC 1.0 AMP MAX.) IGNITOR(HSI)& o INDUCER MOTOR (IND) CONNECTOR SPAREI EAC-2Ilf I I I I 115-VAC (L2) EAC-1 Ilr .E_NEUTRAL , , r I 1 I I CONNECTIONS N f I I I 115 VAC(L1) 1 ,_ INPUT o o C 0 U : L1 BL-1 PR-1 IND HSI -N A11391 15 Figure 16 Example of Two-Stage Furnace Control Board Wain.°-. LOWSET UP HEAT ONLYSWITCHES PCSAND BLOWER �"" FF-DELAY X `r 1 q TWINNING AND/OR Marl a i� COMPONENT TEST ozR�.:u:auu;. , II:, GTseT TERMINAL � ��,.� ( ACRDJ-AIR CONDITIONING ti E. /RELAY DISABLE JUMPER :-LL4 OIC// 24-V THERMOSTAT " T� TERMINALS <; N. TEST/TWIN D� F �I`T�• �(Hal HUMIDIFIER TERMINAL ' (24 VAC 0.5 AMPS MAX) N I'\ T� TRANSFORMER n „I" 24 VAC CONNECTIONS FUSf PL1-LOW VOLTAGE 3-AMP FUSE / MAIN HARNESS CONNECTOR SEG SEC 1 LED OPERATION &DIAGNOSTIC LIGHT 2° - am 115 VAC Hi H, BLOWER POWER(BLI) 0=9 CONNECTION 115 VAC BLOWER SPEED �ppL a TRANSFORMER TERMINALS �'O,y PRIMARY aN $ OWN PL2-HOT SURFACE svAR IGNITER/INDUCER O�v EAC TERMINAL MOTOR CONNECTION SPARE, 115 VAC 1.0 AMP MAX EAC 2 0=0 115-VAC(12) oJo .°1 g I ¢ NEUTRAL ' GC=0 Y S$ CONNECTIONS == dLJ O O yBL-1 PR-1 NSI w 115 VAC UNE(LI) INPUT A11150 CONNECT ELECTRICAL For Single-Stage A/C Operation, Single-Stage COMPONENTS—COOLING Furnaces with Single-Stage Thermostat See Figure 17 AWARNING In the configuration both A/C units come on together as a single unit. It will be necessary to supply one pilot duty relay for A/C operation. ELECTRICAL SHOCK, FIRE OR EXPLOSION 1. Connect one coil terminal of the field-supplied pilot duty relay HAZARD to the"COM/24V"terminal of the furnace control board. Failure to follow this warning could result in personal 2. Connect the other coil terminal of the field-supplied pilot duty injury or death,or property damage. relay to the"Y or Y/Y2"terminal of the furnace control board. 3. Connect the R terminal of the field-supplied transformer to the Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position and open contract of the pilot duty relay. install a lockout tag. There may be more than one 4. Connect the other open contact to the wire for Y terminal of the disconnect switch. Check accessories and cooling unit for contactor(s). additional electrical supplies that must be shut off during 5. Connect the Common terminal of the contactor(s) to the C furnace servicing. Lock out and tag switch with a suitable terminal of the field supplied transformer. warning label. Verify proper operation after servicing. For Two-Stage A/C Operation, using When installing twinned outdoor units with twinned gas furnaces,it is Single-Stage Furnaces with a Two-Stage necessary to use field-supplied 24-VAC pilot-duty relay(s) and a thermostat. field-supplied 24-VAC/115-VAC transformer as shown in the See Figure 18 individual wiring diagrams to prevent overloading furnace 24-VAC/115-VAC transformer. Transformer VA rating must be able In this configuration,the individual A/C unit(s)are staged on and run to handle the load imposed on it by the outdoor unit contactor(s). as controlled by the two-stage thermostat.It will be necessary to supply two pilot duty relays for staged A/C operation.Once A/C unit will be the first stage unit,the other A/C unit will be the second stage 1. Connect the Ll lead of the field-supplied transformer line unit.Single-stage furnaces are staged individually by the thermostat. voltage lead to Ll on Main furnace control board. 1. Connect one coil terminal of each of the pilot duty relay 2. Connect the Neutral lead of the field-supplied transformer to an together. open Neutral terminal on the Main furnace control board. 2. Connect these two terminals to the"COM/24V"terminal of the NOTE: If sufficient room is available in the control box of the furnace control board. outdoor unit,a 24-VAC/240-VAC transformer may be used.Connect 3. Select one of the relays to be the relay for first stage cooling. line voltage leads of the transformer to the appropriate connection Connect the coil terminal of this relay to the"Y/Y2"terminal of locations on the outdoor unit,Refer to the outdoor unit wiring diagram the furnace control board. for specific details. 4. The other relay is the second stage cooling relay. The coil terminal of this relay will connect to the"Y/Y2"terminal of the 16 thermostat. Do not connect the terminal to the Y1 terminal on THERMOSTAT CONNECTIONS the furnace control board. 5. Connect the R terminal of the field-supplied transformer to the WARNING open contract of each pilot duty relay. 6. Connect the other open contact of the first stage cooling relay • to the wire for Y terminal of the first stage contactor. UNIT DAMAGE AND FIRE HAZARD 7. Connect the other open contact of the first stage cooling relay Failure to follow this warning could result in fire,personal injury or to the wire for Y terminal of the second stage contactor. death. 8. Connect the Common terminal of the contactor(s) to the C Make no connections between the R 24-VAC connector in one terminal of the field supplied transformer. furnace and the R 24-VAC connector in other furnace. For Two-Stage A/C Operation, Two-Stage NOTE: All thermostat connections MUST be made at the Main Furnaces with a Two-Stage thermostat furnace control board.Do not make any thermostat connections to the See Figure 19 Secondary furnace control board. In this configuration, the A/C unit(s) are staged on and run as Single-Stage Furnaces with Single-Stage controlled by the thermostat. It will be necessary to supply two pilot Thermostat (Field Supplied) duty relays for staged A/C operation. One A/C unit will be the first See Figure 17 and Table 3 stage unit,the other A/C unit will be the second stage unit.Two-stage furnaces are staged to both come on in low heat and stage up to high NOTE: This application allows both furnaces to operate together as a heat as controlled by the thermostat. single unit. See furnace Installation, Start-Up, and Operating 1. Connect one coil terminal of each of the pilot duty relay Instructions for further details on this heating mode. together. 1. Connect thermostat W lead to"W"on the Main furnace control 2. Connect these two terminals to the"COM/24V"terminal of the board. furnace control board. 2. Connect thermostat Y lead to"Y or Y/Y2"on the Main furnace 3. Select one of the relays to be the relay for first stage cooling. control board. Connect the coil terminal of this relay to the"Y/Y2"terminal of 3. Connect the G thermostat lead to the"G"terminal on the Main the furnace control board. furnace control board. 4. The other relay is the second stage cooling relay. The coil 4. Connect thermostat R lead to "R" terminal on Main furnace terminal of this relay will connect to the"Y/Y2"terminal of the control. thermostat. Do not connect the terminal to the Y1 terminal on 5. Connect thermostat C or COM lead to the "COM/24V" the furnace control board. terminal on the Main furnace control board. 5. Connect the R terminal of the field-supplied transformer to the Single-Stage Furnaces and A/C with Two-Stage open contact of each pilot duty relay. 6. Connect the other open contact of the first stage cooling relay thermostat (Field Supplied) to the wire for Y terminal of the first stage contactor. See Figure 18 and Table 3 7. Connect the other open contact of the first stage cooling relay NOTE: This application allows single-stage furnaces to operate with to the wire for Y terminal of the second stage contactor. one furnace or with both furnaces as determined by a two-stage 8. Connect the Common terminal of the contactor(s) to the C thermostat. terminal of the field supplied transformer. 1. Connect thermostat Wl lead to "W" on the Main furnace For Single-Stage A/C Operation, Two-Stage control board. 2. Connect thermostat W2 lead to White wire labeled"W"on the Furnaces with a Single-Stage thermostat twinning kit relay(TKR). See Figure 19 and Figure 20 3. Connect first stage cooling thermostat lead Yl to "Y/Y2" on In this configuration,the A/C unit(s)run as a single unit.It will be the Main furnace control board. necessary to supply a pilot duty relay for A/C operation.Two-stage 4. Connect the second stage cooling thermostat lead Y/Y2 to the furnaces are staged to both come on in low heat and stage up to high pilot duty relay coil for the second stage contactor. heat as controlled by the furnace. 5. Connect the G thermostat lead to the"G"terminal on the Main 1. Connect one coil terminal of the pilot duty relay to furnace control board. "COM/24V"of the furnace control board. 6. Connect thermostat R lead to "R" terminal on Main furnace 2. Connect the other coil terminal of this relay to the "Y/Y2" control. terminal of the furnace control board. 7. Connect thermostat C or COM lead to the "COM/24V" 3. Connect the R terminal of the field-supplied transformer to the terminal on the Main furnace control board. open contact of the pilot duty relay. Two-Stage Furnaces with Single-Stage 4. Connect the other open contact of the first stage cooling relay to the wire for Y terminal of each outdoor unit contactor. Thermostat (Field Supplied) 5. Connect the Common terminal of the contactor(s) to the C See Figure 19 and Table 4 terminal of the field supplied transformer. NOTE: This application allows both two stage furnaces to operate in low heat for first-stage heat mode or both furnaces to operate in high heat for second-stage heat mode as determined by the staging algorithm of the Main furnace control. See furnace Installation, Start-Up,and Operating Instructions for further details on this heating mode. To operate furnaces in two stage heating mode when a single-stage thermostat controls the staging: 17 • 1. Connect thermostat W1 lead to "W/W1" on Main furnace 1. Connect thermostat W1 to "W/W1" on Main furnace control control board. board. 2. Connect thermostat W2 lead to "W2" on LH Main furnace 2. Connect thermostat W2 to "W2" on Main furnace control control board. board. 3. Turn LHT set-up switch on Main furnace control board to 3. Turn LHT set-up switch on Main furnace control board to "OFF."(See Figure 22) "ON."(See Figure 22) 4. Turn LHT set-up switch on RH control board to"ON." 4. Turn LHT set-up switch on RH control board to"ON." 5. Connect cooling thermostat lead Y to "Y/Y2" on the Main 5. Connect first stage cooling thermostat lead Y1 to "Y/Y2" on furnace control board. the Main furnace control board. 6. Connect the G thermostat lead to the"G"terminal on the Main 6. Connect the second stage cooling thermostat lead Y/Y2 to the furnace control board. pilot duty relay coil for the second stage contactor. 7. Connect thermostat R lead to "R" terminal on Main furnace 7. Connect the G thermostat lead to the"G"terminal on the Main control. furnace control board. 8. Connect thermostat C or COM lead to the "COM/24V" 8. Connect thermostat R lead to "R" terminal on Main furnace terminal on the Main furnace control board. control. Two-Stage Furnaces with Two-Stage 9. Connect thermostat C or COM lead to the "COM/24V" Thermostat (Field Supplied) terminal on the Main furnace control board. See Figure 19 and Table 4 To operate furnaces in two stage heating mode when a two-stage thermostat controls the staging: 18 w Figure 17 Single-Stage A/C Operation,Single-Stage Furnaces with Single-Stage Thermostat 1 MAIN(LH)FURNACE SECONDARY(RH)FURNACE - MAKE NO THERMOSTAT I y1 CONNECTIONS TO I Y1 I THERMOSTAT NOTE#6 SECONDARY(RH) NOTE#6 IDHUMI FURNACE IDHUMI NOTE#3 I G £ I COM Iii ii,,,,,ii„ii„ii,i,iiii,,,,,,,,1 COM BLK K ��-- --...>>2..BLK —I COM IW/ ii,i ,i,,,�,,,ii,i,,,,,,,i ii,.n`�ail w ) WHT KR* WHTT >>_2__ _ 2 NMT W I11 TEST/PMN I I I -�� (Y/Y2I TEST/iWIN Iy I�,��,,,,,,,,,,,,,,,,,,,,„�xai„�'m �I Y/Y2I I I £ ,„ I R l�, „u,u,,.,, ,�i L.1��,,,�,,,nu:�i 'I R I RED �- ->>1. > RED R IT YEL ››L,. _>1 YEL PLB PLB RED SEC-2 SEC-1 BLK NOTE#5 ILR BLU TRAN • WHT '� MI FIELD �L2 NOTE#1 SEC-2 SEC-1 I SUPPLIED RELAY 1 NOTE#2 - RELAY PLA PLA •�,I F-4111 • L K PR1 ^ ALSS 1017INI-1 BLU ORN >>1- -_ >>1 ORN TRAN WHT RED PLC ALS-M << 0 BLU ) -- ---�\2 BLU RED1111 NOTE#2 E NOTE�#3 —/ BLK - PRI EXTENSION HARNESS (IF USED) I TRANSFORMER(FIELD SUPPLIED)NOTE#0 C II Y I I C II Y I I 115 VAC OUTDOOR UNIT OUTDOOR UNIT I N0.1 N0.2 $ I SINGLE STAGE FURNACE&A/C-SINGLE STAGE THERMOSTAT FIELD INSTALLED AIR CONDITIONING WIRING(WHEN REQUIRED) LEGEND: NOTES: ALS-M MAIN AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(N.C.) 1.ALS-S and ILR is located in the SECONDARY or RH furnace ALS-S SECONDARY AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(N.C.) blower compartment. ILR INTERLOCK RELAY SPST(N.O.) 2.Primary connections of transformer not shown;refer to furnace PLA 2-CIRCUIT TWINNING KIT CONNECTOR wire label. PLB 4-CIRCUIT TWINNING KIT CONNECTOR 3.When extension harness is not required PLA and PLB must be PLC 1-CIRCUIT TWINNING KIT CONNECTOR IN LINE SPLICE routed through holes in casings. TEST/TWIN COMPONENT TEST&TWINNING TERMINAL 4.Transformer=115 VAC primary/24 VAC secondary/40VA. TKR TWINNING KIT RELAY,SPST-(N.0.) 5.Relays=24 VAC coils/pilot duty/normally open. IRAN TRANSFORMER-115VAC/24VAC 6.Y1 and DHUM terminal not available on some Single Stage (PART OF FURNACE) Control Boards. - 115 VOLT WIRING ---- TWINNING KIT EXTENSION HARNESS(REQUIRED) FIELD WIRING •i FACTORY WIRING(TWINNING KIT) 338545-101 REV.A ;:kr A12026 19 41 Figure 18 Two-Stage A/C Operation, Single-Stage Furnaces with Two-Stage Thermostat r _____ __ ____ -._-_____._ - MAIN(LH)FURNACE SECONDARY(RH)FURNACE - THERMOSTAT MAKE NO THERMOSTAT W2 l I vi I CONNECTIONS TO SECONDARY(RH) I V1 I Nam 46 u,,,,. IY/V2 I ID HUM NOTE#6 FURNACE IDHUMI NOTE#3 I G I ICOM I' """""uuu„u,uuu,u,,,,,, COM BIVC BLK }___ __>}ELK —I COM I I WM1 I”„,"„uu„u„u„u,,,,uu,u,`4 I W I I I I Vv}ir >> -- ---) MT —I W TEST/TWIN TEST/TWIN V7 In uuu,uu,,,,,uuu...., u,,,, ice(Y/Y2 I WHT I Y/V2 I T I R I,,l,,,l,,,,,,,, ,,,�,c��,,,,,,,, { R I • RED -- --�4 REQ° —I R I YEL >>L1 _ __,>� Imoo mom simi., mom Z PLB PLB RED NOTE#5 SEC-2 SEC-1 BLK ILR t,,,,,„1 ' BLU IRAN W T .--� NOTE AI = MI RELAY I RELAY2 I NGTE#2 rc IF� SEG2 SEG7 PLA PLA �9-1 N '--1)•-' BLK ^ /\ ALS-SRN BLU PRt ORN' ; / \ORN ci TRAN FIELD SUPPLIED RELAYS I RED PLC ALS-M }- ___v_ -_�> 111 VM-fTC\ BLU `�_ __�?-BLURED NOTE#2 L \ ` NO/TE#3 BLK IPR1 u,,,,,,,,uu,,,,,ui„uu,,,,,,,,i,,, ,,, EXTENSION HARNESS � u,,,,,,,,,,,,,,i u„u,uuu,,,,, ' (IF USED) I TRANSFOR1vFRFIELD SUP ( FUED)NOTE#4 = = I 115VAC I C I I V I I C I I V I I $ OUTDOOR UNIT OUTDOOR UNIT N0.2 NO.1 FIELD INSTALLED WRCONomcNINCWRING(N IENREQUIRED) J SINGLE STAGE FURNACE&NC-TWO STAGE THERMOSTAT LEGEND: NOTES: 1.ALS-S and ILR is located in the SECONDARY or RH furnace ALS-M MAIN AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(N.C.) blower compartment. ALS-S SECONDARY AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(N.C.) 2.Primary connections of transformer not shown;refer to furnace ILR INTERLOCK RELAY SPST(N.O.) wire label. PLA 2-CIRCUIT TWINNING KIT CONNECTOR PLB 4-CIRCUIT TWINNING KIT CONNECTOR 3.When extension harness is not required PLA and PLB must be PLC 1-CIRCUIT TWINNING KIT CONNECTOR IN LINE SPLICE routed through holes in casings. TEST/TWIN COMPONENT TEST&TWINNING TERMINAL 4.Transformer=115 VAC primary/24 VAC secondary/40VA. TKR TWINNING KIT RELAY,SPST-(N.O.) 5.Relays=24 VAC coils/pilot duty/normally open. TRAN TRANSFORMER•115VAC 124VAC 6.Y1 and DHUM terminal not available on some Single Stage (PART OF FURNACE) Control Boards. — 115 VOLT WIRING TWINNING KIT EXTENSION HARNESS(REQUIRED) FIELD WIRING FACTORY WIRING(TWINNING KIT) 338544-101 REV.At{ �r L. _ _____ _ --- ----- __—_ A12027 20 Figure 19 Two-Stage Furnace with Single-or Two-Stage Thermostat(Field Supplied) r -, THERMOSTAT MAIN(LH)FURNACE SECONDARY(RH)FURNACE W2 , NOTE#6 ( W2 I MAKE NO THERMOSTAT I W2 I Y1 CONNECTIONS TO Y/Y2Y1 I NOTEI SECONDARY OR RH I I DHUMI IDHUMI FURNACE IDHUMI G I111111"1111"11,1,111111111111111111111 11 G I NOTE#3 I G I CO,11 /111111111111111/1111111111111111111111,1BLK BLK )2_ -">>3 BLK COM 1 WAN1I11111111111111„1111„1111„111111l`1' If WW1 WHT KR WHT ��__ _ --_>>2 WHT IW/Wil TESTlI I I TEST/TWIN Y1 I11 H,,,,,,,,""",,"","::44,".'1" ,{Y/Y2I ♦fWIN T Y/Y2 T R 1111111,111,,,, 11 Ini�,11111111111 LiS 1I R I j I RED \\a__ __ --�,4 RED I R I VOL »2 - ---- »i TEL- I RED 1 111 5 = SEC-2 SEC-1 PLB PLB BLK NOTE#5 WLR BLU TRAN W • Z jj AMA,- !WA! L2 NOTE#1 = SEC-2 SEC-1 RELAY I RELAY 2 NOTE#2 PLAPLA BLU 0_ Hi BLK PRI ALS-S H F ORN ORN � _ __ —— ORN 0 TRAN>>1_ .. FIELD SUPPLIED RELAYS = RED PLC el C-�� L2 "^ BLU��__ — —_42 BLU RED NOTE#2 1111,11,111111 1111111111111111.1111111111111111111.111111 ., NOTE#3 BLK P61 11111111i11u1111„11111111 24VAC 11111111111,111111101111..11 _ 111111111,11,11111 = I EXTENSION HARNESS - (IF USED) TRANSFORMER(FIELD SUPPLIED)NOTE#4 = - I 9115VAC ICI1YI I C I I Y I I S OUTDOOR UNIT OUTDOOR UNIT N0.2 NO.1 FIELD INSTALLED AIR CONDITIONING WIRING(WHEN REQUIRED) 2 STG FURNACES/1 STG A/C UNIT LEGEND: NOTES: ACRDJ AIR CONDITIONING RELAY DISABLE JUMPER 1.ALS-S and ILR is located in the SECONDARY or RH furnace blower ALS-M MAIN AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(N.C.) ALS-S SECONDARY AUX.LIMIT SW.OVERTEMP-MANUAL RESET,SPST(NC.) compartment. ILR INTERLOCK RELAY(N.O.) 2.Primary connections of transformer not shown;refer to furnace wire PLA 2-CIRCUIT TWINNING KIT CONNECTOR label. PLB 4-CIRCUIT TWINNING KIT CONNECTOR 3.When extension harness is not required PLA and PLB must be PLC I-CIRCUIT TWINNING KIT CONNECTOR IN LINE SPLICE routed through holes in casings. TEST/TWIN COMPONENT TEST&TWINNING TERMINAL 4.Transformer=115 VAC primary/24 VAC secondary/40VA. TKR TWINNING KIT RELAY,SPST-(N.O.) 5.Relays=24 VAC coils/pilot duty/normally open. IRAN TRANSFORMER-115VAC/24VAC 6.Two-stage heating can be accomplished by one of the two methods: (PART OF FURNACE) a.Using one stage thermostat and letting the Main Furnace's(LH) - 115 VOLT WIRING algorithm control low and high-heat operation. -- TWINNING KIT EXTENSION HARNESS(REQUIRED) b.Using a two-stage thermostat to control low and high-heat FIELD WIRING operation.(Apply"W2"Wire) FACTORY WIRING(TWINNING KIT) 7.For single stage NC operation eliminate relay 1 and 0 0 THERMOSTAT MAIN(LH) SECONDARY(RH) use relay 2 to control both outdoor units. -n Z TYPE LHT SWITCH 1 LHT SWITCH 1 LHT IIII=- ONE STAGE OFF ON • OFF N THERMOSTAT 338543-101 REV.B ,r4 r �, DLY w TWO STAGE ON ON THERMOSTAT A12025 21 Figure 20 Single-Stage A/C using Two-Stage Furnace with Single-Stage Thermostat To COM on Main To Y/Y2 on Main Furnace Control Furnace Control Board Board • • • • • • NO FIELD SUPPLIED RELAY RELAY • • • • • • • • • • • • • • • • • • • '• 24 VAC • • • • TRANSFORMER(FIELD SUPPLIED) NOTE#4 11 • • ■ 115 VAC C Y C Y OUTDOOR UNIT OUTDOOR UNIT $ NO. 1 NO.2 FIELD INSTALLED AIR CONDITIONING WIRING (WHEN REQUIRED) A12023 22 Table 3 Single-Stage Thermostat Connections Single-Stage Heating and Cooling with Single-Stage Thermostat Using Two Single-Stage Furnaces THERMOSTAT CONTROL BOARD CONNECTIONS CONNECTION ACTION C C Transformer Common R R Power from control board to thermostat Starts LH and RH furnaces for heating Y/Y2 (Y on standard control Energizes accessory cooling relay(s)to start LH and RH A/C for cooling board) G G Starts both indoor fans on cooling speed (With Y/Y2 energized) Dehum* Dehum* Reduces airflow in cooling mode from cooling speed to heating speed when Dehum input is removed Two-Stage Heating and Cooling with Two-Stage Thermostat Using Two-Stage Furnaces C C Transformer Common R R Power from control board to thermostat W1 W Starts LH furnace for first stage heating W2 None Thermostat W2 wired directly to RH accessory relay to start RH Furnace for second stage heating Y/Y2 Y1 Energizes accessory cooling relay to start LH and A/C for first stage cool- (Y on standard control ing and cooling speed blower board'_ Y2 None Thermostat Y2 wired directly to RH accessory relay to start RH and A/C for second stage cooling G G Starts both indoor fans on cooling speed(With Y/Y2 energized) Dehum* Dehum* Reduces airflow in cooling mode from cooling speed to heating speed when Dehum input is removed *Dehum is not available on all thermostats or control boards Table 4 I Two-Stage Furnace Thermostat Connections Two-Stage Heating with Single-Stage Thermostat Using Two-Stage Furnaces C C Transformer Common R R Power from control board to thermostat W W/W1 Starts LH and RH furnaces in low heat or high heat,as deter-mined by LH furnace control board* Y 1 Y/Y2 Energizes accessory cooling relay to start both A/C units for cooling Y2 None Thermostat Y2 wired directly to RH accessory relay to start RH and A/C for second stage cooling G G Starts both indoor fans on cooling speed (With Y/Y2 energized) Dehum* Dehum** Reduces airflow in cooling mode from cooling speed to heating speed when Dehum input is removed Two-Stage Heating with Two-Stage Thermostat Using Two-Stage Furnaces C C Transformer Common R R Power from control board to thermostat W1 W/W1 Starts both furnaces in low heat for first stage heating* W2 W2 Starts both furnaces in high heat for second stage heating* Y 1 Y/Y2 Energizes accessory cooling relay to start both A/C units for cooling Y2 None Thermostat Y2 wired directly to RH accessory relay to start RH and A/C for second stage cooling G G Starts both indoor fans on cooling speed (With Y/Y2 energized) Dehum* Dehum** Reduces airflow in cooling mode from cooling speed to heating speed when Dehum input is removed LHT switches must be in correct configuration **Dehum is not available on all thermostats or control boards *Do not remove ACRDJ from furnace control boards Table 5 Continuous Fan Operation THERMOSTAT CONTROL BOARD CONNECTIONS CONNECTION ACTION R R Power from control board to thermostat G G Starts both fans in heating speed* 23 VENTING Figure 21 Example of Twinning Reference Label Refer to Installation, Start-Up, and Operating Instructions supplied with each furnace for venting information. Each furnace must always be individually vented. Do not common-vent or breach-vent ■ condensing furnaces. For allowable vent installations refer to furnace These furnaces are twinned together usingaccessoryTwinningKit installation instructions for allowable configurations and proper termination.It is important that vent terminations be made as shown to KGATW0701 HSI. Refer to Twinning Kit wiring label located on other furnace for avoid recirculation of flue gases. component information and wiring details GAS SUPPLY PIPING used with this kit. Use furnace wiring diagram supplied with All gas connections must be made through exposed outer side of each each furnace for individual furnace furnace. Do not common connect any connection other than supply component information and wiring details. and return-air ducts.Furnaces are recommended to be provided with a single shutoff valve. However, individual shutoff valves may be required by local codes or jurisdictions.Refer to Installation,Start-Up, 338539-101 REV.A ' ' and Operating Instructions provided with each furnace for additional gas supply information. A12024 CONDENSATE DRAIN 5. Manually close the door switch on both furnaces. 6. Turn on power and gas to furnaces. CONNECTIONS 7. Using the appropriate section below, operate furnaces through The condensate trap is factory installed in the furnace vestibule and two cycles in each mode to confirm correct operation by factory connected for UPFLOW applications. Install condensate trap operating only the thermostat. such that field drain connections are on the left side for LH (MAIN) a. Single-or two-stage gas heating thermostat R to W/W1 for furnace and on right side for RH(SECONDARY)furnace. low-heat.Single-stage thermostat with adaptive heating The condensate trap must be relocated for downflow and horizontal mode causes furnace to operate in low-heat mode for up to applications. 16 minutes,and then furnace automatically switches to See furnace Installation, Start-Up, and Operating Instructions for high-heat.First stage of a two-stage thermostat without details on relocating the condensate and attaching field drain adaptive heating mode causes furnace to operate in connections. low-heat mode indefinitely. START-UP AND ADJUSTMENT b. First and second-stage of two-stage heating thermostat R to W/W1 and W2 for high-heat. A WARNING' c. Thermostat R to G for continuous fan or two-stage cooling T low-cool blower.(See Table 5) ELECTRICAL SHOCK, FIRE OR EXPLOSION d. Cooling thermostat R to G and Y/Y2 for single—speed HAZARD cooling blower or for two-stage cooling high-cool blower. 8. Reinstall doors on both furnaces. Failure to follow this warning could result in personal injury or death,or property damage. 9. Instruct user in operation of furnaces and thermostat. Before installing, modifying, or servicing system, main SEQUENCE OF OPERATION electrical disconnect switch must be in the OFF position and See condensing furnace twinning connection and schematic wiring install a lockout tag. There may be more than one diagrams while reviewing sequence of operation. disconnect switch. Check accessories and cooling unit for Twinning operation is controlled by LH or MAIN furnace. The additional electrical supplies that must be shut off during TWIN/TEST connection wire ensures the two furnaces coordinate furnace servicing. Lock out and tag switch with a suitable their blower operation.When either furnace requires blower operation, warning label. Verify proper operation after servicing. both furnace blowers operate at same speed. Both furnaces operate simultaneously in the same mode: heat, cool, or continuous fan. NOTE: Refer to Installation, Start-Up, and Operating Instructions Exceptions can occur if a safety switch on either furnace is opened by supplied with furnace for detailed information. a problem(such as pressure switch, flame roll-out switch, main limit 1. Shut off all power and gas to both furnaces. switch,twinning kit auxiliary limit switch, or flame-proving sensor). 2. Position blower off delay switches on controls in BOTH In such a case, the other furnace continues to operate unless open furnaces to the SAME desired blower off delay in heating.See switch is the flame roll-out,main limit,or twinning kit auxiliary limit furnace Installation, Start-Up, and Operating Instruction for switch,in which case both furnaces respond. further details. Before performing component test, disconnect TKR yellow wire 3. Attach twinning connection wiring label above the existing labeled TEST from LH furnace control center TWIN/TEST terminal. furnace wiring label on the inside of the LH furnace blower After removing yellow wire, component test can be initiated on each furnace individually as stated in Installation, Start-Up, and Operating door.Use the following labels for the following applications: • Single-Stage furnaces with single-stage thermostat, Instructions. 338545-101 FIXED CAPACITY FURNACES • Single-Stage furnaces with two-stage thermostat, SINGLE-STAGE HEAT, SINGLE-STAGE 338544-101 FURNACES WITH SINGLE-STAGE • Two-Stage furnaces with single-stage or two-stage THERMOSTAT thermostat,338543-101 1. Operation in all modes(sequence of operation)is the same for 4. Attach twinning reference label 338539-101 on the outside of twinned furnaces as for an individual furnace. See furnace blower access door of RH furnace. Installation, Start-Up, and Operating Instructions for more information on the sequence of operation. 24 II ,, TWO-STAGE HEAT, SINGLE-STAGE 1. LH furnace control determines whether furnaces are both FURNACES WITH TWO-STAGE operating in low-heat or high-heat,depending on the control's adaptive gas heating mode when the R-to-W/W1 circuit is • THERMOSTAT closed in LH furnace. 1. The two-stage thermostat determines if furnaces are operating 2. Operation in all modes(sequence of operation)is the same for ' in first-stage heat (LH furnace operates in heat while RH twinned furnaces as for an individual furnace. See furnace furnace blower operates but RH furnace is not heating) or if Installation, Start-Up, and Operating Instructions for more furnaces are operating in second-stage heat (both furnaces information on sequence of operation. operate in heat),depending on how many thermostat stages are TWO-STAGE HEAT,TWO-STAGE calling for heat. If two-stage cooling is used, Yl from the FURNACES WITH TWO-STAGE GAS-HEAT thermostat will initiate both furnace blowers to the cooling speed and the first A/C unit. Y2 from the thermostat will go THERMOSTAT directly to the outdoor unit and initiate the second A/C unit. NOTE: See Electrical Connections for control board wiring and LHT 2. Operation in all modes(sequence of operation)is the same for switch setup. twinned furnaces as for an individual furnace. See furnace 1. The two-stage thermostat(NOT the furnace control's adaptive Installation, Start-Up, and Operating Instructions for more gas heating mode) determines whether furnaces are both information on sequence of operation. operating in low-heat or high-heat,depending on whether one TWO-STAGE HEAT, TWO-STAGE or both thermostat stages(W/W1 or W/W1 and W2)are calling FURNACES WITH SINGLE-STAGE for heat. THERMOSTAT 2. Operation in all modes(sequence of operation)is the same for twinned furnaces as for an individual furnace. See furnace NOTE: See Electrical Connections for control board wiring and LHT Installation, Start-Up, and Operating Instructions for more switch setup.(See Figure 22) information on sequence of operation. Figure 22 Furnace Thermostat Switch Left Right O Hand Hand m z Thermostat LHT LHT m Z Type Switch 1 Switch 1 LHT Single Stage OFF ICJ N g OFF ON DLY Thermostat W Two-Stage ON ON Thermostat I.H Fio? 25