The URL can be used to link to this page

Report /v?5) 5t9qu0/4' Plciiiii /10 ni ifiarry4ber nomenclature RECEIVE Carrier' 50PCH 024 B C C 3 E C C 1 FEB 8 202i AquazoneTM Compact Water Source Fac I grtlETeCIGlAgf) Heat Pump with Puron° 1 — None iRnQtryl Refrigerant(R-410A) 2 L4Vaterside C o ntz f• 50PCH — Horizontal Configuration 8 — MERV 8 Filter 50PCV — Vertical Upflow Configuration 9 — MERV 13 Filter Nominal Capacity-Tons Operating Range/Sound Option/Insulation 007 — 1/2 024 — 2 042 3-1/2 A — Extended Range(25 to 110 F) 009— 3/4 030 — 2-1/2 048 — 4 C — Standard Range(50 to 100 F) D — Extended Range, 1/2-in.Closed Cell Foam 012 — 1 036 — 3 060 — 5 E — Standard Range, 1/2-in.Closed Cell Foam 015 — 1-1/4 041 — 3-1/2 070 — 6 F — Extended Range, Mute,Closed Cell Foam 018 — 1-1/2 J — Extended Range, Mute N — Standard Range,Mute P — Standard Range, Mute,Closed Cell Foam Horizontal Airflow Configuration Return Discharge Blower Motor B — Right Back PSC Valve Options E — Left Right PSC A — 2-Way Solenoid N — Right Left Constant Torque ECM B — Autoflow Regulator(3 gpm autoflow reg) P — Right Back Constant Torque ECM C — None S — Left Back PSC D — 2-Way Solenoid with Autoflow Regulator W— Left Right Constant Torque ECM Y — Left Back Constant Torque ECM Z — Right Left PSC Revision Code Vertical Airflow Configuration D — Revision D E Revision E J — Left Top Constant Torque ECM K — Right Top Constant Torque ECM L — Left Top PSC Voltage R Right Top PSC 1 — 575-3-60 3 — 208/230-1-60 Control 4 — 265-1-60 C — Standard C Control Package 5 208/230-3-60 D — Deluxe D Control Package 6 — 460-3-60 W WSHP Open DDC Control Package A — 575-3-60 with Disconnect C — 208/230-1-60 with Disconnect D — 265-1-60 with Disconnect E — 208/230-3-60 with Disconnect F — 460-3-60 with Disconnect LEGEND Refrigerant Circuit Options ECM —Electronically Commutated Motor PSC —Permanent Split Capacitor Non-Coated Air Coil Coated Air Coil Option Copper Cupronickel Copper Cupronickel Standard C N A J Hot Gas Reheat E P D F Hot Gas Bypass T S U W Hot Gas Bypass&Reheat L M R V NOTE: Configuration and option availability are subject to change. Please refer to WSHP Builder for availability. 5 AHRI/ISO capacity ratings Carrier 50PC UNITS WITH EXTENDED RANGE AND COPPER COILS WATER LOOP HEAT PUMP GROUND WATER HEAT PUMP GROUND LOOP HEAT PUMP MOTOR UNIT Cooling 86°F Heating 68°F Cooling 59°F Heating 50°F Cooling 77°F Heating 32°F CFM GPM OPTION SIZE Capacity EER Capacity COP Capacity EER Capacity COP Capacity EER Capacity COP BTU/h BTU/W-h BTU/h BTU/h BTU/W-h BTU/h BTU/h BTU/W-h BTU/h 007 6,100 13.20 7,800 5.10 6,800 15.10 4,900 3.40 300 2.0 009 8,200 12.40 9,900 4.70 N/A N/A N/A N/A 330 2.5 Horizontal 009 8,150 12.40 10,700 4.70 8,700 14.40 6,900 3.20 330 2.5 Vertical 012 10,900 12.20 13,000 4.30 11,800 14.10 8,700 3.20 375 3.0 015 14,200 12.80 16,100 4.40 14,200 14.60 11,300 3.30 500 4.0 018 18,200 14.10 20,200 4.60 19,200 16.15 14,300 3• .50 600 5.0 PSC 024 24,300 14.20 27,400 5.00 N/A 25,400 16.90 18,100 3.55 800 6.0 030 28,200 13.40 32,600 4.70 29,500 15.60 21,500 3.40 950 7.0 036 36,900 14.30 38,800 4.65 38,500 16.65 27,100 3.55 1200 9.0 041 36,000 14.15 39,100 4.45 37,400 16.20 27,400 3.30 1240 9.0 042 39,600 13.65 42,800 4.45 41,200 15.90 30,000 3• .25 1380 10.0 048 46,200 13.95 58,600 4.65 48,400 16.35 39,300 3.40 1640 12.0 060 59,100 13.60 77,800 4.80 61,600 15.80 53,400 3• .75 1900 15.0 070 64,000 13.30 72,800 4.40 66,400 15.00 50,800 3.40 2000 16.0 015 13,700 13.90 15,500 4.40 14,400 16.20 10,700 3.30 500 4.0 018 18,500 14.50 19,900 4.70 19,500 16.95 14,000 3.55 650 5.0 024 24,700 14.90 27,000 5.10 25,800 17.65 1• 7,700 3.60 850 6.0 030 28,800 13.50 32,000 4.90 30,100 15.65 2• 0,900 3.55 950 7.0 036 37,200 14.70 38,400 4.75 38,800 17.10 26,700 3.60 1200 9.0 ECM N/A 041 37,000 14.35 38,200 4.70 38,400 16.45 26,500 3.45 1240 9.0 042 40,500 14.20 41,800 4.60 42,100 16.60 29,000 3.40 1380 10.0 048 47,100 14.30 57,800 4.70 49,300 16.70 38,500 3.45 1640 12.0 060 59,000 14.30 66,400 4.30 61,100 16.40 46,200 3.30 2000 15.0 070 65,200 14.60 71,800 4.60 67,600 16.60 5• 0,000 3.50 2100 16.0 LEGEND NOTES: AHRI- Air Conditioning, Heating and Refrigeration Institute 1. Ratings based upon ANSI/AHRI/ASHRAE/ISO 13256-1 with 1-in. COP - Coefficient Performance Fdo eble filter. EER - EnergyEfficiencyRatio 2. For specific configuration ratings, refer to WSHP Builder in Carrier ECAT. ISO - Interntional Orgnization for Standardization 3. Vertical/Horizontal airflow. NA - Not Applicable 4. Ground Loop Heat Pump ratings require an extended range option. 5. Certified in accordance with ANSI/AHRI/ASHRAE/ISO 13256-1. 01111.111411 ■P% CERTIFIED TM www.ahridirectory.org Water Source HP ANSI/AH RI/ASHRAE/IS013256-1 6 Dimensions Carrier 50PCH UNIT Back Discharge Return Air D Opening Return Air Opening 111 R 41111000 K J Condensate ` \O N 4..,... ..1P(0 Drain Left I ��WaterReturn �� Connections g Condensateg�, G A Drain I Compressor Electrical Access Knock-Outs Left Hand Return,Back Discharge Left Hand Return,Right Discharge NOTE:Models 048 and 060 Left Hand Return units have condenser water connections on the front right and electrical knockouts on the front left. jAir ReturnAir ng Opening Condenser14111110111110 Water Out Condenser " Condensate Condensate Water In Drain g Drain. A A IIIIII Right Hand Return,Back Discharge Right Hand Return,Left Discharge Service Clearances(Top View) Air Coil Electrical Control Blower Access Box Compressor Access and LEGEND --I. 18"Minimum 4 Q ► ControlAccess �-24"Optimum r24"Minimum R/A -Return Air L Blower 36"Optimum Compressor I I 50PCH007-070 UNITS A B C D E F G H J K M N P 0 R T CAB CONDENSER RECOMMENDED 50PCH CAB SIDE Ft/A R/A FRONT TOP END TOP FILTER WATER REPLACEMENT UNIT END TO WATER WATER TO DISC. DISC. DUCT WIDTH* DEPTHt HEIGHT DUCT TO TO TO TO RACK CONNECTIONS NOMINAL FILTER SIZE FILTER WIDTH FILTER INLET OUTLET DISC. WIDTH DISC. HEIGHT DISC. DISC. HEIGHT FLANGE FPT SIZE RACK RACK WIDTH HEIGHT 007 19.0 33.0 11.5 1.5 16.15 15.35 2.38 9.50 5.375 6.30 5.97 4.10 4.875 1.41 11.3 8.6 3/4 10x16x1 009 19.0 33.0 11.5 1.5 16.15 15.35 2.38 9.50 5.375 6.30 5.97 4.10 4.875 1.41 11.3 8.6 3/4 10x16x1 012 19.0 33.0 11.5 1.5 16.15 15.35 2.38 9.50 5.250 6.43 6.31 4.10 4.750 1.14 11.3 8.6 3/4 10x16x1 015 22.0 43.0 17.0 1.5 20.15 21.35 2.86 15.00 8.150 6.43 9.55 4.10 7.650 3.40 16.8 15.0 3/4 16x20x1 015** 22.0 43.0 17.0 1.5 20.15 21.35 2.86 15.00 5.420 9.13 6.11 9.65 4.920 1.23 16.8 15.0 3/4 16x20x1 018 22.0 43.0 17.0 1.5 20.15 21.35 2.86 14.13 5.420 9.13 6.11 9.65 4.920 1.23 16.8 15.0 3/4 16x20x1 024 22.0 43.0 18.0 1.5 25.00 16.50 2.86 14.13 5.420 9.13 6.11 9.65 4.920 1.23 16.8 15.0 3/4 16x25x1 030 22.0 43.0 18.0 1.5 25.00 16.50 2.47 15.00 5.420 9.13 6.11 9.65 4.920 1.23 16.8 15.0 3/4 16x25x1 036 22.0 54.5 19.0 1.5 30.15 22.85 2.86 16.13 6.470 9.13 7.50 10.28 5.970 1.21 18.8 17.0 3/4 18x30x1 042 22.0 54.5 19.0 1.5 30.15 22.85 2.86 16.13 5.270 10.45 6.46 11.30 4.770 1.22 18.8 17.0 3/4 18x30x1 048 25.0 54.5 21.0 1.5 34.60 18.40 2.86 18.52 7.250 10.45 7.46 11.36 6.750 2.16 20.8 19.0 1 20x34.5x1 060 25.0 54.5 21.0 1.5 34.60 18.40 2.86 18.52 6.320 11.76 6.81 12.50 5.820 1.68 20.8 19.0 1 20x34.5x1 070 25.0 65.0 21.0 1.5 48.10 15.40 2.86 18.52 6.320 11.76 6.81 12.50 5.820 1.68 20.8 19.0 1 20x24x1(2) *When waterside economizer is installed,increase width by 7 inches. NOTES: 1t When WSHP Open controller is installed increase depth by 2.6 inches.When waterside econ- 2. All condensatens drainare within±cti0. ns inch. omizer is installed,increase depth by 7 inches. 2. All condensate 70connections are 3/4tin.eFPT. 3. Unit sizes 015-070 can be field converted between end blow and straight through dis- **50PCH015 units built with ECM motor option. charge air configurations. 4. Specifications subject to change without notice. 5. The 1-in.filter rack extends 1.23-in.beyond the side of the unit.The 2-in.filter rack extends 2.89-in.beyond the side of the unit.The 2-in.filter rack is 4-sided with a filter access door on one end and can accept either a 1 in.or 2-in.filter.When a waterside economizer is installed the filter rack will be a 2-sided filter rack only. 6. Return and discharge orientations determined when facing panel with water connections. 12 i Performance data (Carrier 50PCH007-070 CORNER WEIGHTS (LB) UNIT LEFT HAND EVAPORATOR RIGHT HAND EVAPORATOR SIZE TOTAL(lb) Left Front* Right Front* Left Back Right Back Left Front* Right Front* Left Back Right Back 007 98 28 21 25 24 21 28 24 25 009 103 29 23 26 25 23 29 25 26 012 105 29 24 26 26 24 29 26 26 015 127 36 28 34 29 28 36 29 34 018 177 57 36 48 37 36 57 37 48 024 181 58 37 48 38 37 58 38 48 030 194 61 41 52 41 41 61 41 52 036 237 71 49 66 52 49 71 52 66 042 231 70 47 64 50 47 70 50 64 048 268 87 60 62 60 60 87 60 62 060 288 88 65 69 66 65 88 66 69 070 316 98 72 76 70 72 98 70 76 *Front is control box end. 18 CPerformance data (cont) Carrier 50PCH,PCV (007-070) BLOWER PERFORMANCE—STANDARD PSC UNIT 50PCH, RATED FAN AIRFLOW(cfm)AT EXTERNAL STATIC PRESSURE(in.wg) PCV AIRFLOW SPEED 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 Low 370 340 295 250 — — 007 300 Med 390 360 330 300 260 — — — — — High 410 380 350 315 280 210 — — — Low 370 340 295 250 — 009 350 Med 390 360 330 300 260 — — — — — — — High 410 380 350 315 280 210 — — — — — — Low 300 290 290 300 012 400 Med 380 380 360 330 290 — — — — — High 420 400 380 360 340 320 — — Low 500 450 400 — — 015 500 Med 560 520 480 430 400 — — — — — — — High 700 650 600 550 500 450 400 — Low 630 590 560 — — — — — — — — — 018 600 Med 810 790 760 730 680 590 — — — High 1010 970 920 870 800 680 530 — — — — — Low 740 730 700 660 610 — — — — 024 800 Med 830 810 770 730 680 620 — — High 1000 950 900 830 750 690 630 — — — Low 740 730 700 660 610 — — — 030 950 Med 830 810 770 730 680 620 — — — — — — High 1000 950 900 830 750 690 630 — — — — — Low 1290 1250 1200 1150 1080 1000 — — — — — — 036 1200 Med 1410 1350 1290 1220 1150 1060 900 — — High 1500 1440 1370 1290 1210 1120 1000 900 Low 950 900 840 780 720 700 — — — — — — 041 1250 Med 1200 1140 1080 1010 930 870 820 — — High 1490 1400 1320 1240 1160 1080 990 910 — Low 1210 1210 1190 1160 1120 1080 — — — — — — 042 1400 Med 1460 1450 1430 1390 1330 1250 1160 — — — — High 1750 1710 1670 1620 1560 1460 1330 1210 1080 — — — Low 1450 1440 1420 1400 1360 1320 — — 048 1600 Med 1700 1670 1630 1580 1530 1470 1400 — — — (208/230V) High 1930 1870 1810 1740 1670 1600 1520 1430 1340 — — — Low 1886 1853 1818 1773 1724 1654 1562 1481 1386 1299 883 — 048 1600 Med 2029 1993 1946 1897 1837 1763 1662 1564 1460 1360 1254 — (460V) High 2225 2170 2105 2032 1961 1885 1793 1666 1541 1435 1298 — Low 1560 1550 1540 1530 1505 1475 1440 1400 — — — — 060 2000 Med 1890 1880 1870 1860 1825 1790 1730 1670 1590 1500 — — High 2220 2200 2150 2100 2050 2000 1940 1870 1800 1700 1590 — Low 1570 1560 1550 1540 1530 1505 1475 1440 1400 — 070 2100 Med 1900 1890 1880 1870 1860 1825 1790 1730 1670 1590 1500 — High 2240 2220 2200 2150 2100 2050 2000 1940 1870 1800 1700 1590 NOTE:575V models employ 1 speed motor(high only). 20 Electrical data Carrie 50PCH,PCV (007-070) UNIT WITH STANDARD PSC BLOWER MOTOR ELECTRICAL DATA RATED COMPRESSOR 50PCH,PCV VOLTAGE VOLTAGE FAN MOTOR FAN MOTOR TOTAL UNIT MIN CIRCUIT MAX FUSE/ v-ph-Hz MIN/MAX QTY RLA LRA FLA HP FLA AMP HACR 007 208/230-1-60 197/253 1 2.6 17.7 0.96 0.10 3.56 4.2 15 265-1-60 238/292 1 2.6 13.5 0.96 0.10 3.56 4.2 15- 208/230-1-60 197/253 1 3.4 22.2 0.96 0.10 4.36 5.2 15 009 265-1-60 238/292 1 2.9 18.8 0.85 0.10 3.75 4.5 15 012 208/230-1-60 197/253 1 4.6 28.0 0.96 0.10 5.56 6.7 15 265-1-60 238/292 1 3.8 22.2 0.85 0.10 4.65 5.6 15 015 208/230-1-60 197/253 1 5.6 29.0 1.10 1.17 6.70 8.1 15 265-1-60 238/292 1 4.6 20.0 0.90 0.17 5.50 6.7 15 018 208/230-1-60 197/253 1 7.4 33.0 1.80 0.25 9.20 11.1 15 265-1-60 238/292 1 6.0 28.0 1.60 0.25 7.60 9.1 15 208/230-1-60 197/253 1 13.5 58.3 1.80 0.25 15.30 18.7 30 024 265-1-60 238/292 1 9.0 54.0 1.60 0.25 10.60 12.9 20 208/230-3-60 197/253 1 7.1 55.4 1.80 0.25 8.90 10.7 15 460-3-60 414/506 1 3.5 28.0 0.90 0.25 4.40 5.3 15 208/230-1-60 197/253 1 12.8 64.0 1.80 0.25 14.60 17.8 30 030 265-1-60 238/292 1 10.9 60.0 1.60 0.25 12.50 15.2 25 208/230-3-60 197/253 1 8.3 58.0 1.80 0.25 10.10 12.2 20 460-3-60 414/506 1 5.1 28.0 0.90 0.25 6.00 7.3 15 208/230-1-60 197/253 1 15.2 79.0 4.40 0.50 19.60 23.4 35 208/230-1-60` 197/253 1 15.4 83.9 4.40 0.50 19.80 23.7 35 036 265-1-60 238/292 1 11.6 72.0 3.60 0.50 15.20 18.1 40 208/230-3-60 197/253 1 10.4 73.0 4.40 0.50 14.80 17.4 25 460-3-60 414/506 1 5.8 38.0 1.80 0.50 7.60 9.1 15 208/230-1-60 197/253 1 15.4 83.9 4.40 0.75 19.80 23.7 40 041 208/230-3-60 197/253 1 10.4 73.0 4.40 0.75 14.80 17.4 25 460-3-60 414/506 1 5.8 38.0 2.80 0.75 8.60 10.1 15 042 208/230-1-60 197/253 1 16.2 109.0 4.40 0.50 20.60 24.7 40 460-3-60 414/506 1 5.6 44.0 1.80 0.50 7.40 8.8 15 208/230-1-60 197/253 1 19.6 130.0 4.40 0.75 24.00 28.9 45 048 208/230-3-60 197/253 1 13.7 83.1 4.40 0.75 18.10 21.5 35 460-3-60 414/506 1 6.2 41.0 2.80 0.75 9.00 10.6 15 575-3-60 517/633 1 4.8 33.0 2.60 0.75 7.40 8.6 15 208/230-1-60 197/253 1 26.0 134.0 6.00 0.75 31.80 38.4 60 208/230-3-60 197/253 1 16.0 110.0 6.00 0.75 21.10 25.0 40 060 460-3-60 414/506 1 8.0 52.0 3.00 0.75 10.60 12.6 20 575-3-60 517/633 1 6.0 38.9 3.00 0.75 8.40 9.9 15 208/230-1-60 197/253 1 28.3 178.0 5.50 0.75 33.80 40.9 60 070 208/230-3-60 197/253 1 19.2 136.0 5.50 0.75 24.70 29.5 45 460-3-60 414/506 1 8.7 66.1 2.80 0.75 11.50 13.7 20 575-3-60 517/633 1 6.9 55.3 2.60 0.75 9.50 11.2 15 LEGEND `Data for units produced on or after week 46 of 2019. FLA - Full Load Amps C s us HACK -HeHeating,Air-Conditioning and Refrigeration LRA -Locked Rotor Amps RLA -Rated Load Amps Intertek 22 Control sequence of operation ;Carrier ,i The WSHP Open multi-protocol controller will control WSHPs can be controlled from a single occupancy sci led: mechanical cooling, heating, hot gas reheat and waterside ule. The local Occupancy Schedules must be disabled in economizer outputs based on its own space temperature order to utilize the global occupancy input. input and set points. An optional CO2 IAQ (indoor air qual- NOTE: Scheduling can only be controlled from one ity)sensor mounted in the space can maximize the occupant source. 3 comfort. The WSHP Open has its own hardware clock that is automatically set when the heat pump software is down- BACnet network occupancy input loaded to the board. Occupancy types are described in the The WSHP Open controller has the capability to accept an ; scheduling section below. The following sections describe external BACnet Binary Network Input for occupancy con- the functionality of the WSHP Open multi-protocol control- trol. This function is only compatible with units used in ler. All point objects that are referred to in this sequence of BACnet systems. You will need to configure the "System operation will be referenced to the objects as viewed in the Occupancy" BACnet network input point to locate the 0 BACview6 handheld user interface. device and point name where the external occupancy Scheduling point information resides. Also Occupancy Schedules must j Scheduling is used to start/stop the unit based upon a time be disabled in order to utilize this input. period to control the space temperature to specified occu NOTE: Scheduling can only be controlled from one pied heating and cooing set points. The controller is source. defaulted to control by occupied set points all the time, Fire/smoke detector (FSD) input(field optional) until either a Time Schedule is configured with the Equip- The WSHP Open controller has the capability to read the 1 ment Touchm interface, i-Vu®Open, or a Third Party con- status of a NC FSD contact input to determine if a fire or i trol system Enables/Disables the BAS On/Off point. Your smoke detector alarm is present. If the controller deter- local) time and date must be set for these functions to oper mines an alarm condition is present, all heating, cooling ate properly. The occupancy source can be changed to and the fan are disabled. The normal state of the switch is one of the following: factory set to Normally Closed and cannot be changed. Occupancy schedules Shutdown input l The controller will be occupied 24/7 until a Time schedule The WSHP Open controller has a shutdown input (soft: has been configured using either, i-Vu Open, Equipment ware) which when set to its Active mode will cause the Touch or a third party Enables/Disables the BAS On/Off WSHP to safely shut down in a controlled fashion. Heating point. This can be disabled by going to Config>Unit>Occu- and cooling will be disabled after any minimum runtime pancy Schedules and changing the point from Enable to Dis- conditions expire and the fan will be disabled after the fan able. off timer expires. All alarms are reset but any active alarm ( NOTE: This point must be Enabled in order for i-Vu Open will remain active. After the shutdown input transitions or Bacview6 to assign a Time schedule to the controller. from Active mode to Inactive mode, the WSHP Open con- Schedule Schedule troller will restart after the configured power fail restart ; delay expires. The unit will operate according to the schedule configured Indoor fan and stored in the unit. The schedule is accessible via the ;l Equipment Touch user interface, i-Vu Open,or Field Assis- The indoor fan will operate in any one of three modes tant. The daily schedule consists of a start/stop time (stan- depending upon the user configuration selected. Fan mode k dard or 24 hour mode) and seven days of the week, can be defined/selected as Auto, Continuous, or Always starting with Monday and ending on Sunday. On. In Auto mode the fan is in intermittent operation Occupancy input contact (option) during both occupied and unoccupied periods. Continuous fan is intermittent during unoccupied periods and continu- If configured for remote occupancy control (default), the ous during occupied periods. Always On operates the fan 1 WSHP Open controller has the capability to use an exter- continuously during both occupied and unoccupied peri- nal dry contact closure to determine the occupancy status ods. In the default mode, Continuous, the fan will be of the unit. You will need to disable the Occupancy Sched- turned on whenever any one of the following is true: ules in order to utilize the Occupancy Contact Input. The • It is in occupied mode. Determined by its occupancy control will cause the unit to go into an occupied mode status. whenever the abnormal input is sensed. After the input • Whenever there is a demand for cooling or heating in returns to its normal state, the unit will stay in the occupied the unoccupied mode. (15 minutes default). •mode for the configured Occupancy Override Delay period When there is a call for dehumidification (optional). NOTE: Scheduling can only be controlled from one source. When power is reapplied after a power outage, there will BAS (building automation system) on/off be a configured time delay of 5 to 600 seconds before starting the fan. There are also configured fan delays for For use with a Building Automation System that supports Fan On and Fan Off. The fan on delay defines the delay network scheduling, you will need to disable the Occu- time (0 to 30 seconds; default 10)before the fan begins to pancy Schedules so the BAS system can control the unit operate after heating or cooling is started while the fan off through a network communication and the BAS schedul- delay defines the delay time (0 to 180 seconds; default 45) ing function. the fan will continue to operate after heating or cooling is NOTE: Scheduling can only be controlled from one source. stopped. The fan will continue to run as long as the com- pressors, heating stages, or the dehumidification relays are Global occupancy scheduling on. If the SPT failure alarm or condensate overflow alarm The WSHP Open controller has the capability to read the is active; the fan will be shutdown immediately regardless occupancy status from another unit so that a group of of occupancy state or demand. 28 cCarrie9 Automatic 3-speed fan control space temperature (SPT) to the appropriate cooling set The WSHP Open controller is capable of controlling up to point. The water side economizer if applicable, will be three fan speeds. The motor will operate at the lowest used for first stage cooling in addition to the compressor(s). speed possible to provide quiet and efficient fan operation The following conditions must be true in order for the cool- with the best latent capability. The motor will increase ing algorithm to run: speed if additional cooling or heating is required to obtain • Cooling is set to Enable the desired space temperature set point. The control • The Fire/Smoke Input and Shutdown modes are Mac- increases the motor's speed as the space temperature rises tive above the cooling or below the heating set point. The • Heat mode is not active and the compressor time amount of space temperature increase above or below the guard(s) have expired set point required to increase the fan speed is user configu- • Condensate Overflow input is Normal rable in the set point.Also,the control will increase the fan • Fan Status is true (if option is enabled) speed as the Supply Air Temperature approaches the con • If occupied, the SPT is greater than the occupied cool- figured minimum or maximum limits. Fan speed control- during heating • ing set point Space temperature reading is valid Whenever heat is required and active, the control continu- • If unoccupied, the SPT is greater than the unoccupied ously monitors the supply air temperature to verify it does cooling set point. not rise above the configured Maximum Heating SAT Limit • If economizer cooling is available and active and the (110°F default). As the SAT approaches this value, the economizer alone is insufficient to provide enough cool- control will increase the fan speed as required to ensure the SAT will remain 5°F below the limit. This feature provides OAT is greater than the Cooling lockout temperature if OAT is available the most quiet and efficient operation by operating the fan at the lowest speed possible. • speed control- during cooling • Condenser Water Pump is on (if condenser water link- Fanage active) Whenever mechanical cooling is required and active, the If all the above conditions are met, the compressors will be control continuously monitors the supply air temperature energized as required, otherwise they will be de-energized. to verify it does not fall below the configured Minimum If cooling is active and should the SAT approach the mini- Cooling SAT Limit(50°F default). As the SAT approaches mum SAT limit, the fan will be indexed to the next higher this value, the control will increase the fan speed as speed. Should this be insufficient and if the SAT falls fur- required to ensure the SAT will remain 5°F above the limit. ther (equal to the minimum SAT limit), the fan will be Fan will operate at lowest speed to maximize latent capac- indexed to the maximum speed. If the SAT still continues ity during cooling. to fall 5°F below the minimum SAT limit,all cooling stages Fan status (option) will be disabled. An optional input can be configured as either an occu- During Cooling, the reversing valve output will be held in pancy input contact or a fan status input. If configured as the cooling position(either B or 0 type as configured)even fan status, the controller will compare the status of the fan after the compressor is stopped. The valve will not switch to the desired commanded state. The fan status sensor position until the heating mode is required. must be field provided and installed. Whenever the fan is The configuration screens contain the Min SAT parameter commanded to run(ON), the fan status will be checked and as well as cooling lockout based on outdoor air tempera- verified to match the commanded state. If the fan status is ture(OAT), both can be adjusted to meet various specifica- not on, then a fan status alarm will be generated after 1 lions. minute and the equipment's compressor(s) and auxiliary There is a 5-minute off time for the compressor as well as heat will be disabled and the optional OA damper will close p (if equipped). a 5-minute time delay when staging up to allow the SAT to Coolingachieve a stable temperature before energizing a second stage of capacity. Likewise, a 45-second delay is used The WSHP Open controller will operate one or two stages when staging down. of compression to maintain the desired cooling set point. After a compressor is staged off, it may be restarted again The compressor outputs are controlled by the PI (propor- after a normal time-guard period of 5 minutes and if the tional-integral) cooling loop and cooling stages capacity supply air temperature has increased above the minimum algorithm. They will be used to calculate the desired num- supply air temperature limit. ber of stages needed to satisfy the space by comparing the 29 Control sequence of operation (cont) Carrier The WSHP Open controller provides a status input to switch or other safety device has tripped and caused the corn- monitor the compressor operation. The status is moni- pressor to stop operating normally. If this should occur, an tored to determine if the compressor status matches the alarm will be generated to indicate the faulted compressor commanded state. This input is used to determine if a condition. Also, if auxiliary heat is available (see below), the refrigerant safety switch or other safety device has tripped auxiliary heat will operate to replace the reverse cycle heating and caused the compressor to stop operating normally. If and maintain the space temperature as required. this should occur, an alarm will be generated to indicate the Auxiliary heat faulted compressor condition. Reverse cycle heating Single stage electric auxiliary heat The WSHP Open controller will operate one or two stages The control can operate a single stage of electric heat installed of compression to maintain the desired heating set point. on the discharge side of the unit in order to maintain the The compressor outputs are controlled by the heating PI desired heating set point should the compressor capacity be insufficient or a compressor failure occurs. Unless a compres- (proportional-integral) loop and heating stages capacity sor fault condition exists, the heat stage will only operate to algorithm. They will be used to calculate the desired num supplement the heat provided by the compressor if the space ber of stages needed to satisfy the space by comparing the temperature falls more than one degree below the desired space temperature (SPT) to the appropriate heating set heating set point.The heat stage will be controlled so the SAT point. The following conditions must be true in order for will not exceed the Maximum Heating SAT limit and subject the heating algorithm to run: to a two-minute minimum OFF time to prevent excessive • Heating is set to Enable cycling. Should the compressor(s) fail to operate and heating • The Fire/Smoke Input and Shutdown modes are inac- is required, the auxiliary heat will operate as required to main- tive tain the space temperature set point. • Cool mode is not active and the compressor time guard Indoor air quality (IAQ) and demand controlled has expired ventilation (DCV) • Condensate Overflow input is Normal If the optional indoor air quality sensor is installed or the net- • Fan Status is true (if option is enabled) work input point "System Space AQ" is utilized, the WSHP • If occupied, the SPT is less than the occupied heating Open controller can maintain indoor air quality, with a field- set point installed modulating OA damper providing demand controlled • Space temperature reading is valid ventilation. The control operates the modulating OA damper • If unoccupied, the SPT is less than the unoccupied heat- during occupied periods. The control monitors the CO2 level ing set point and compares it to the configured set points and adjusts the • OAT is less than the Heating lockout temperature if ventilation rate as required. The control provides proportional OAT is available. ventilation to meet the requirements of ASHRAE specifica- • Condenser Water Pump is on (if condenser water link- tions by providing a base ventilation rate and then increasing age active) the rate as the CO2 level increases. The control will begin to proportionally increase ventilation when the CO2 level rises If all the above conditions are met, the heating outputs will above the start ventilation set point and will reach the full ven- be energized as required, otherwise they will be de- tilation rate when the CO2 level is at or above the maximum energized. If the heating is active and should the SAT set point. A user configurable minimum damper position approach the maximum SAT limit, the fan will be indexed ensures that proper base ventilation is delivered when occu- to the next higher speed. Should this be insufficient,then if pants are not present. The IAQ configurations can be the SAT rises further and reaches the maximum heating accessed through the configuration screen. The following SAT limit,the fan will be indexed to the maximum speed. If conditions must be true in order for this algorithm to run: the SAT still continues to rise 5°F above the maximum • Damper control is configured for DCV. limit, all heating stages will be disabled. • The Fire/Smoke Input and Shutdown modes are inac- During Heating, the reversing valve output will be held in tive. the heating position(either B or 0 type as configured)even • Fan Status is true (if option is enabled). after the compressor is stopped. The valve will not switch • The unit is in an occupied mode. position until the cooling mode is required. • IAQ sensor reading is greater than the DCV Start Con- The configuration screens contain the Max SAT parameter trol set point. as well as heating lockout based on outdoor air temperature (OAT), both can be adjusted to meet various specifications. The control has four user adjustable set points: DCV start There is a 5-minute off time for the compressor as well as control set point, DCV Maximum Control set point, Mini a 5-minute time delay when staging up to allow the SAT to mum damper position and the DCV Maximum damper achieve a stable temperature before energizing a second position. stage of capacity. Likewise, a 45-second delay is used NOTE: In order for the damper to maintain proper base ven- when staging down. tilation, the fan must be configured to operate in either the After a compressor is staged off, it may be restarted again Continuous or Always On mode. after a normal time-guard period of 5 minutes and if the Two-position OA damper supply air temperature has fallen below the maximum sup The control can be configured to operate as a ventilation ply air temperature limit. damper in a 2-position ventilation mode to provide the The WSHP Open controller provides a status input to moni- minimum ventilation requirements during occupied peri- tor the compressor operation. The status is monitored to ods. This control operation still utilizes the modulating determine if the compressor status matches the commanded damper actuator. state. This input is used to determine if a refrigerant safety 30 ( arrie) Dehumidification with hot gas reheat (HGRH) Heating The WSHP Open controller will provide occupied and Additionally, the economizer control will open the water unoccupied dehumidification only on units that are valve should the entering water loop temperature be suit- equipped with the factory-installed HGR option. This func- able for heating(at least 5°F above space temperature)and tion requires an accessory space relative humidity sensor. heat is required. The valve will be controlled in a similar When using a relative humidity sensor to control dehumidi- manner except to satisfy the heating requirement. Should fication during occupied or unoccupied times, the dehu- the coil capacity be insufficient to satisfy the space load for midification set points are used accordingly. Additionally, more than 5 minutes, then the compressor will be started the network input point "System Space RH" may also be to satisfy the load. Should the SAT reach the Maximum used in place of the hard wired RH (relative humidity) sen- Heating SAT limit, the economizer valve will close during sor. When the indoor relative humidity becomes greater compressor operation. then the dehumidification set point a dehumidification Demand limit demand will be acknowledged. As long as heating or cool The WSHP Opencontroller has the abilityto accept three ing is not currently active, dehumidification will be ener- p gized, bringing on the supply fan (medium speed), levels of demand limit from the BACnet network. In mechanical cooling, and the integral refrigerant hot gas response to a demand limit, the unit will decrease its heat- reheat coil. The controls will engage cooling mode, start ing set point and increase its cooling set point to widen the the compressor if not already operating, and waste heat range in order to immediately lower the electrical demand. from the compressor cooling cycle will be diverted to the The amount of temperature adjustment in response is user reheat coil. The reversing valve will be positioned to oper- adjustable for both heating and cooling and for each ate the compressor in the cooling mode. If a call for sensi- demand level. The response to a particular demand level ble cooling takes place during hot gas reheat operation,the may also be set to zero. hot gas reheat is de-energized and the reheat operation is Power failure restart delay turned off. Once the call for cooling has been satisfied and The control provides a user configurable delay when recov- if there is still a need for dehumidification,the unit will con- ering from a power failure or SHUTDOWN mode or when tinue to operate in a dehumidification mode with the corn- transitioning from unoccupied to occupied mode in order pressor providing cooling and the refrigerant reheat to prevent excessive demand when many units start simul- energized. taneously. Each unit can be user configured for a unique Waterside economizer delay between 5 and 600 seconds. The factory pro- The WSHP Open controller has the capability of providing grammed default delay is 180 seconds. two-position waterside economizer operation (economizer Fire/smoke detector alarm coil is mounted to the entering air side of the unit and con- The control monitors the voltage input to J1-9 to detect if nected to the condenser water loop)in order to be used to a smoke detector or fire detector Normally Closed contact provide free cooling(or preheating)when water conditions has opened, indicating an alarm condition. The control will are optimal. Water economizer settings can be accessed verify the presence of 24 vac on this input. If the input through the equipment status screen. The following condi- should open at any time, an alarm will be generated after 3 tions must be true for economizer operation: seconds and the equipment (fan, compressor, auxiliary • SAT reading is available. heat and damper) will immediately return to an OFF or • EWT reading is available. closed state. • If occupied, the SPT is greater than the occupied cool- Space temperature alarms ing set point or less than the occupied heating set point The control provides the ability to generate an alarm when- and the condenser water temperature is suitable. ever the space temperature exceeds the alarm set point. A • Space temperature reading is valid. separate occupied hysteresis and fixed unoccupied high and • If unoccupied, the SPT is greater than the unoccupied low alarm set points are provided. The control provides a 5- cooling set point or less than the unoccupied heating set minute alarm delay during unoccupied periods. During occu- point and the condenser water temperature is suitable. pied periods, the control uses the occupied temperature set Two-position water economizer control points and applies the hysteresis value to determine the alarm set points. Whenever an occupancy transition from The control has the capability to control a normally open unoccupied to occupied occurs or the occupied temperature or normally closed, two-position water valve to control set points are changed causing an alarm condition to occur, condenser water flow through a coil on the entering air the control will automatically calculate an alarm delay(equiv- side of the unit. alent to the configured delay time in minutes per degree F Cooling times the temperature error that occurred plus 15 minutes). This will prevent nuisance alarms whenever an occupancy The purpose is to provide a cooling economizer function change occurs and allows time for the unit to correct an directly from the condenser water loop when the entering alarming temperature condition. water loop temperature is suitable(at least 5°F below space Condenser water temperature alarm temperature). If the optional coil is provided and the water loop conditions are suitable, then the valve will open to The control has 4 configurable alarm limits for condenser provide cooling to the space when required. Should the water temperature. The control will verify that the water capacity be insufficient for a period greater than 5 minutes, temperature is within operating range (between high and or should a high humidity condition occur, then the corn- low limits) for the specific operating mode (heating or cool- pressor will be started to satisfy the load. Should the SAT ing) before energizing the compressor. Once the compres- reach the Minimum Cooling SAT limit, the economizer sor is started, the condenser water temperature is further valve will close during compressor operation. monitored to verify that it is within limits to ensure sufficient water is flowing through the coil. Should the leaving water 31 1 Control sequence of operation (cont) Carrier; temperature rise above or fall below the appropriate limits, can be disabled by setting Occupied High IAQ Alarm Limit and alarm is generated and the compressor will be shut to zero. down if the condition occurs for more than 15 seconds. Relative humidity alarm Supply air temperature alarm The control provides the ability to generate an alarm The control has 2 configurable alarm limits for supply air whenever the space relative humidity exceeds the alarm set temperature. The control will verify that the supply air tern- point. Separate occupied and unoccupied high humidity perature is within operating range (between high and low alarm set points are provided. The control provides a 5- limits)whenever the compressor or auxiliary heat is operat- minute alarm delay during unoccupied periods. During ing. Should the air temperature rise above or fall below the occupied periods, the controller uses the occupied high RH appropriate limit, an alarm is generated if the condition alarm limit. Whenever an occupancy transition from unoc- occurs for more than 1 minute. cupied to occupied occurs, or the occupied high alarm limit High condensate/overflow alarm is lowered causing an alarm condition to occur, the control will automatically calculate an alarm delay: The control will monitor a discrete input to determine the state of a condensate level switch. The input can be config- the configured delay time in minutes + 15 minutes ured to alarm on either an open or closed switch condition. RH times the humidity error Should this input be in an alarm state, the control will start condition that occurred a timer and after the timer exceeds a configurable Conden- sate Overflow Alarm Delay limit (10-second default), the This will prevent nuisance alarms whenever an occupancy control will generate an alarm and the unit will disable the change occurs and allows time for the unit to correct an compressor and fan outputs. alarming humidity condition. Fan status alarm (optional) Condenser water linkage failure alarm (if con- The control generates a fan status alarm should the fan sta- denser water linkage was active) tus input detect the fan is OFF after any fan speed output The control generates a condenser water linkage failure has been enabled. A 30-second alarm delay is used to alarm should linkage fail after once being active. The link- allow the fan sufficient time to start operating before an age status is monitored and should it fail to be updated alarm condition is detected. The control monitors the fan from the Loop Controller, then a Condenser Water Link- output and if the fan is operating at any speed, the fan sta- age alarm is generated. A 6-minute alarm delay is provided tus must detect the fan is operating. to prevent false alarm from occurring. Compressor status alarm NOTE:This alarm can only be reset by re-establishing linkage The control generates a compressor failure alarm should the and correcting the condition that caused the linkage failure to compressor status input detect the compressor is OFF after occur or by setting the SHUTDOWN point to Active momen- the compressor output has been energized. A 6-minute tarily. alarm delay is used to allow the compressor to start (pre Airside linkage failure alarm (if airside linkage vents alarms due to time guard operation) before an alarm condition is detected. The control monitors the compressor was active) output and if the compressor output is energized, the corn- The control generates an airside linkage failure alarm pressor status input must detect the compressor operation. should linkage fail after once being active. The linkage sta- Filter status alarm tus is monitored and should it fail to be updated from the Master Zone Controller, then an Airside Linkage alarm is The control provides the ability to generate a dirty filter generated. A 6-minute alarm delay is provided to prevent alarm after the number of fan run hours exceeds a configu- false alarm from occurring. rable filter alarm timer limit. The control monitors the fan NOTE: This alarm can only be reset by re-establishing link- output and if the fan is operating at any speed, it accumu age and correcting the condition that caused the linkage fail- lates run time. Should the fan run time hours exceed the ure to occur or by setting the SHUTDOWN point to Active configurable limit, an alarm is generated. To reset the momentarily. alarm timer after the alarm has been generated, a Reset Filter Alarm input is provided. The filter alarm can be dis- OAT sensor alarm (if network OA temperature abled by setting the Filter Alarm Timer Delay to zero (fac- was active) tory default). The control generates an OAT sensor failure alarm should Indoor air quality alarm the value of OAT fail to be updated through the Network The control provides the ability to generate a high CO2 after once being active. The update status is monitored and level alarm during occupied periods whenever the CO2 should it fail to be updated, then an OAT sensor alarm is sensor value exceeds the user adjustable limit. Whenever generated. An alarm delay (approximately 1 hour) is pro- an occupancy transition from unoccupied to occupied vided to prevent false alarm from occurring while minimiz- occurs, or the occupied alarm limit is changed to a value ing the required update rate for OAT. that causes an alarm condition to occur, the control will NOTE: This alarm can be reset by setting the SHUT- automatically calculate an alarm delay: DOWN point to Active momentarily. the configured delay time in minutes ZS sensor alarm (if ZS sensor was active) + 15 minutes The control generates a ZS sensor failure alarm should the ppm times the error that occurred ZS sensor fail to communicate with the control. The This prevents nuisance alarms from occurring when occu update status is monitored and should it fail to be updated, pancy changes or the set point is changed. The IAQ alarm then the alarm is generated. 32