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Specifications 'ill P • Notes \." _ to A /..4j 'c7 c&'/1 17 / 11j4 C recz: (V/ Fref ,...,/, if ' „ ..........„. malm. ■■•1111 N e__ u 46 if i e 46 ' 5 0 tier ki 4e15 , r CITY OF TIGARD Approved . Conditionally APPTOVedosamsseeesseam. If I See Letter to: Follow.... f I p , , _ - - A . , . -,- - V --- .911MdalbER-11 By -ise. Datc Ilito07-_, OFFICE COPY AEaz3 F We - Z— . Service wsc090-sF -1 • • Library Service Literature Facts Product Section Unitary Product Package Air Conditioner Customer Property: Contains Model ws ' wiring and service informa- tion. Please retain. Literature Type Service Facts Sequence 1 Date April 2003 File No. SV- UN- RT- WSCO90 -SF -1 4/03 Supersedes WSC090 -SF -1 10/01 Models : Packaged Heat Pump WSC090A3R0A0A WSC090A3RCAOA % 2 Ton Rooftop Units WSC090A3RGA0A WSC090A3RKAOA WSC090A3RNAOA WSC090A4ROAOA WSCO9OA4RCAOA V -� WSC090A4RGAOA WSC090A4RKAOA WSC090A4RNAOA WSC090AWROA0A \ \� WSC090AW RCAOA WSC090AWRGA0A \ \ WSC090AW RKAOA `, -: 0 0 WSC090AWRNA0A WIll _I s 7 «r \ 0 ' 0 Imo-- NOTICE Warnings and Cautions appear at appropriate locations throughout this manual. Read these carefully - WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or • • • moderate injury. It may also be used to alert against unsafe practices and where property- damage- only accidents could occur. © American Standard Inc. 2004 Technical Literature Printed in USA Page F- 690 -000 12 Table of Contents ' • • Product Specifications 3 Belt Drive Indoor Fan 4 Belt Drive Motor Sheave/ RPM 5 - Economizer Pressure Drop 5 Filter Pressure Drop 5 Electric Heater Pressure Drop 5 ReliaTel Sequence of Operation 7 Standard Short Orifice Cooling Pressure Curve 8 Super Heat Chart 8 Heatng Pressure Curve 9 Refrigerant Circuit Diagram 10 4111 • • • 2 11 Mechanical Data Product Specifications Refrigerant Circuit Diagram • WSC090A3,4,W 208-230/60/3 460/60/3 575/60/3 Cooling Performance A CAUTION Gross Cooling Capacity BTUH ' 93,000 93,000 93,000 SEER 2 10.1 10.1 10.1 CONTAINS REFRIGERANT! • Nominal CFM / ARI Rated CFM 3,000/2,625 3,000/2,625 3,000/2,625 SYSTEM CONTAINS OIL AND REFRIGERANT ARI Net Cooling Capacity 88,000 88,000 88,000 UNDER HIGH PRESSURE. RECOVER Integrated Part Load Value REFRIGERANT TO RELIEVE PRESSURE System Power (KW) 8.71 8.71 8.71 BEFORE OPENING THE SYSTEM. Heating Performance High Temp Btuh Rating @ 47 F 88,000 Failure to follow proper procedures can result System Power KW 8.06 in personal illness or injury or severe equipment damage. Low Temp Btuh Rating @ 17 F 50,000 System Power KW 6.66 Power Connection Standard Motor Min. Circuit Ampacity 42.7 22.5 17.6 V Fuse Size 60.0 35.0 25 UNIT NCI. CIRCUITS NO. CIRCUITS NCI. CIRCUITS INDOOR SUBCOOLER OUTDOOR CONDENSER OUTDOOR SUBCOOLER WSCO4B 10 13 1 Oversize Motor WSC060 13 13 1 Min. Circuit Ampacity 45.8 24.0 18.8 WSCD72 16 17 1 P Y WSC090 12 17 2 Fuse Size 60 35 25 OUTDOOR COIL Compressor (IT Ii CONDENSER U L CIRCUITS TS SHOWN) ) Number / Type 1/ Scroll 1/ Scroll 1/ Scroll INDOOR COIL Voltage 208 - 230/60/3 460/60/3 575/60/3 uo CIRCUITS SHOWN) R. L. Amp / L. R. Amp 26.0 / 181.5 13.5 / 95.0 10.9 / 69.0 c Outdoor Coil - Type Lanced 0 C Tube Size (in.) OD 0.3125 Face Area (sq ft) 17 Rows /FPI 3/17 HEATING < • III Refrigerant Control Expansion Valve o MI-29- Indoor Coil - Type Lanced COOLING Tube Size (in.) OD 0.3125 - F ace Area (sq ft) 9.89 i "S°" Rows / FPI 4/16 E VAL c Refrigerant Control Short Orifice Drain Connection Size (in.) 1/0.75 NPT o c O utdoor Fan - Type Propeller Propeller Propeller c No. Used / Diameter (in.) 1/26 1/26 1/26 WSED48 - 090 Drive Type / No. Speeds Direct /1 Direct /1 Direct/1 i DW AR TUBE �_ C No. Motors / H P CONTROL sulrp vE H IGH PRESSURE 1/0.70 1/0.70 75 1 /0.70 DEVICE L Motor RPM 1075 1075 1075 ([OGLING S ERVICE C Belt Drive Indoor Fan -- Type FC Centrifugal FC Centrifugal FC Centrifugal MBE) VALVE - '� No. Speeds Variable Sheave Variable Sheave Variable Sheave DISCHARGE---'''''' ) D ISCHARGE n ) .' Belt Size AX32 AX32 AX32 0 LINE SERVICE VALVE o COIL RNRERniUQE SENSOR\ y c � Motor Frame Size 56 56 56 SUCTION Standard Motor r COMPRESSOR f Fan Diameter x Width (in.) 12 x 12 12 x 12 12 x 12 u o SUCTIN -LOW PRESSURE ) LINE CONTROL SERVICE Motor HP 1.00 1.00 1.00 VALVE Motor RPM 1750 1750 1750 /L NE Filters - Type- Throwaway 4 REFRIGERANT FLOW S CO48 - WSCO60 4366 -1314 D (No.) Size Recommended (in.) (4) 16 x 25 x 2 Refrigerant Charge (lbs - R22) 3 12.2 1. Cooling Performance is rated at 95 F ambient, 80 F entering dry bulb, 67 F entering wet bulb and nominal cfm listed. . ARI capacity is net and includes the effect of fan motor heat. Base models are certified in accordance with the Unitary Air - Conditioner Equipment certification program, • • which is based on ARI Standard 210/240. All models tested in accordance with ARI Standard 210/240. 2. Rated at ARI conditions and in accordance with DOE test procedures. 3. Refrigerant charge shown is a nominal value, for a more precise value see the unit nameplate. 4. Two Inch Panel Filter is Standard, Two Inch Pleated Filter is Optional. 10 3 Belt Drive Indoor Fan Option . Refrigeration Data WS_BD09_A Downflow Configuration w/1 I-P Standard Motor &Drive, 3 FP Oversize Motor &Drive HEATING CYCLE PRESSURE CURVE External Static Pressure (Inches of Water) ( Based on Indoor Airflow of 400 CFM ! Ton) 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 400 - CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1 HP Standard Motor & c Reid Supplied Low Static Drive 1 HP Standard Motor & Drive 350 2400 620 0.49 670 0.57 720 0.66 768 0.76 810 0.84 850 0.93 888 1.02 925 1.12 961 122 a) E In Q 2700 622 0.57 673 0.66 719 0.74 763 0.841 807 0.94 850 1.04 889 1.14 926 124 961 134 995 1.44 co - C a E p 3000 680 0.76 727 0.87 770 0.951 810 1.05 849 1.16 890 127 929 1.38 967 1.50 1000 1.61 1034 1.72 w a C i n a) D E < 0 3300 739 0.98 782 1.11 823 121 861 1.30 897 1.41 933 1.50 969 1.66 1006 1.78 1041 1.91 1074 2.03 ¢ 300 aci - awl E < O o 3600 798 125 838 1.39 876 1.50 913 1.61 947 1.721 980 1.84 1013 1.97 1047 2.11 1080 224 1113 2.38 c _ E < _ _ o a o r Needs Field Supplied 0 1 3 FP Oversize Motor &Drive w o a a o L L 0 1 80 F ID DB • a 250- E -o - 0 - � ti. , External Static Pressure (Inches of Water) w 0 O o - " e-, � � 70 F ID DB 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 ¢ O - ° N CFM RPM BHP FPM BHP RPM BHP FPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM 81-P a u_ _-- �� V 200 - ° - 60 F ID DB co 1 HP Std Motor & Drive 3 HP Oversize Motor & Drive p 2400 995 1.32 1027 1.42 1060 1.52 1091 1.62 1121 1.73 1151 1.83 1180 1.93 1207 2.04 1234 2.14 1260 224 2700 1027 1.55 1059 1.65 1091 1.77 1121 1.88 1151 2.00 1179 2.11 1207 223 1234 2.34 1261 2.46 1289 2.58 150 3000 1065 1.83 1095 1.94 1125 2.05 1154 2.17 1183 2.30 1211 2.42 1238 2.54 1264 2.67 1292 2.80 1317 2.93 3300 1104 2.15 1134 227 1163 2.40 1191 2.52 1217 2.64 1245 2.77 1272 2.901 1297 3.03 1324 3.17 1349 3.31 3600 1144 2.52 1173 2.65 1202 2.78 1229 2.91 1256 3.05 1282 3.18 1308 3.32 1332 3.45 100 . . . . . . 3 HP Oversize Motor & Drive 3 HP OS Motor & Reid Supplied ligh Static Drive 10 20 30 40 50 60 70 80 90 100 WS_BD09A • III SUCTION PRESSURE PSIG To Check Operating Pressures 4. Take discharge and suction pressure readings. 1. Start the unit and allow the pressures to stabilize. 5. Rot the outdoor dry bulb and the indoor dry bulb 2. Measure the indoor DB/WB temperature entering temperature onto the chart. Horizontal Configuration • t he indoor coil. 6. At the point of intersection, read down for the suction External Static Pressure (Inches of Water) 3. Measure the outdoor air dry bulb temperature pressure and to the left for the discharge pressure. 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 CFM FPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM 131-P RPM BHP 1 HP Std Motor & Reid Supplied Low Static Drive 1 HP Standard Motor & Drive 2400 647 0.51 686 0.58 737 0.66 787 0.76 831 0.85 870 0.93 908 1.02 944 1.12 980 123 1015 1.33 2700 718 0.71 753 0.791 792 0.87 839 0.96 882 1.08 922 1.18 958 127 992 1.36 1026 1.4711058 1.59 3000 789 0.96 822 1.04 853 1.13 892 122 935 1.33 974 1.4511011 1.58 1044 1.68 1076 1.78 1106 1.88 3300 862 125 892 1.35 921 1.441 951 1.54 988 1.64 1026 1.76 1062 1.90 1096 2.04 1129 2.16 1158 227 3600 934 1.61 963 1.71 990 1.81 1016 1.92 1045 2.02 1079 2.13 1115 227 1148 2.41 1180 2.57 1210 2.71 3 HP Oversize Motor & Drive External Static Pressure (Inches of Water) 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1 I-P Std Nit( Mtr & Drive 3 HP Oversize Motor & Drive 2400 1051 1.44 1085 1.54 1118 1.64 1152 1.75 1185 1.86 1215 1.97 1247 2.09 1277 220 1305 2.32 1333 2.43 2700 1090 1.70 1122 1.82 1153 1.94 1185 2.06 1216 2.18 1245 229 1274 2.4011304 2.53 1333 2.65 1361 2.78 3000 1136 2.00 1165 2.13 1194 226 1223 2.39 1251 2.52 1279 2.65 1308 2.78 1336 2.91 1363 3.04 1390 3.17 3300 1187 2.39 1214 2.50 1242 2.63 1269 2.7611296 2.90 1322 3.05 1347 3.19 1373 3.34 3600 1239 2.84 1266 2.96 1291 3.08 1317 320 1343 3.34 3 HP OS Motor & Drive 3 HP Oversize Motor & Reld Supplied ligh Static Drive . NOTES: Factory Supplied Ivbtors, In Commercial Equipment, Data Includes Pressure Drop Due To Wet Coils And Filters. Are Definite Purpose Motors, Specifically Designed And . Fan Motor Heat (NBH) =3.15 xFan Tested To Operate ReliablyAnd ContinuouslyAt All - 1. Field Supplied Fan Sheave AK56 Required. Reld Supplied Belt M3yBe Necessary. • Cataloged Conditions. Using The Full Horsepower Rang( • ' Of Our Fan Motors As Shown In Our Tabular Data Wiil Not Result In Nuisance Tripping Or Premature Motor Failure. Our Products Warranty Will Not Be Affected. 4 9 • Refrigeration Data Performance Specifications Motor Sheave / Fan Speed COOLING CYCLE PRESSURE CURVE Fan Speed (RPM) (Based on Indoor Airflow of 400 CFM / Ton) Motor Sheave Standard Over Size Position Motor & Sheave Motor & Sheave 5 Turns Open 787 958 475 m m I m' 4 Turns Open 847 1022 m • - c c c 3 Turns Open ** 908 1086 425 a 0 0 0 2 Turns Open 968 1150 o LL LL LL 1 Turns Open 1029 1214 LL LN . a 375 co Closed 1089 1278 FS _ _ o ** Factory Setting = C° I_ 115 F OD Ambient y 325 roli _ . - y I I a , � 1 05 F OD Ambient Economizer Pressure Drop o ) 275 � m ���� 95 F OD A I mbient I Static Pressure Drop (Inches of W.C.) t ��� 8 5 F OD Ambient � Downflow Horizontal u y 225 100% 100% 100% 100% FA a F OD Ambient CFM Outside Air Return Air Outside Air Return Air A 175 = IIA� 65 F OD Ambient 2400 0.11 0.02 0.08 0.02 _fi 55 FODAmbient 3000 0.14 0.05 0.12 0.05 125 - I I 3600 0.21 0.07 0.25 0.08 55 60 65 70 75 80 85 90 95 100 105 Suction Pressure, PSIG Filter Pressure Drop - To Check Operating Pressures Alter Pressure Drop (Inches of W.C.) 1. Start the unit and allow the pressures to stabilize. 5. Rot the outdoor dry bulb and the Standard Alters Pleated Alters 2. Measure the indoor DB/WB temperature indoor DB/WB temperature onto the chart. CFM 2 Inch 2 Inch - entering the indoor coil. 6. At the point of intersection, read dow n for 2400 0.06 0.09 3. Measure the outdoor air dry bulb temperature. the suction pressure and to the left for the 2700 0.08 0.11 1 • • 4. Take discharge and suction pressure readings. discharge pressure. 3000 0.10 0.13 3300 0.12 0.16 3600 0.14 0.18 SUPERHEAT CHARGING CHART (Based on Indoor Airflow of 400 CFM / Ton) Electric Heater Pressure Drop kW Input 9.0 kW 18.0 kW 27.0 kW 36.0 kW 50 I I I I I I I I I I I I I I I Rating To Determine Required Superheat - a A) Plot the Outdoor Temperature onto the bottom axis of the curve. CFM Static Pressure Drop (Inches of W. C.) w 40 _ B) Mow vertically to the appropriate indoor DB /WB temp. (or interpolate temp). _ 2400 0.020 0.020 0.034 0.034 in C) At the point of intersection, (OD & ID) read horizontally to the left for the required ,' 2700 0.029 0.029 0.047 0.047 I - ▪ - superheat. - �- w 86/72 F ID DB/WB 3000 0.042 0.042 0.063 0.063 = 30 - w 80/67 F ID DB /WB ® I N 3300 0.057 0.057 0.081 0.081 ` ���� ( 3600 0.077 0.077 0.102 0.102 w 74/62 F ID DB/WB t cr 20 Temperature Rise Across Heater @ 3000 CFM 6 8 5 7 F I DB/WB B 9.5 19 28.5 37.9 w EU% Note: 2 10 - 'gill 1.Temperature Rise = (Heater kW x3414)/(1.08 x CFM) o 0 - 0 . 35 45 55 65 75 85 95 105 115 OUTDOOR AMBIENT, DB F ' - 1) REFRIGERANT CHARGE - ADD if the superheat is more than 5'F above curve value. - REDUCE if the superheat is more than 5 F below curve value. • • - OK if the superheat is within 5 F of curve value. 2) Do not add refrigerant if the superheat is less than 5 F. 3) Curves are based on 400 CFM /Ton Indoor Airflow @ 50% R.H. 4) System must be running at stablized conditions before measunng superheat. 0 5 ReliaTel ReliaTel Sequence of Operation Sequence of Operation • i These units are equipped with a microelectronic control system is connected to a remote panel, the "SERVICE" feature, which provides operating functions that are signifi- LED will be turned on when this failure occurs. 2. Reference Enthalpy - controlling the economizer cycle Demand Defrost cantly different than conventional units. It is referred to as by sensing the outdoor air humidity. The table below lists Demand defrost is a standard feature which permits defrost the "ReliaTel Control System ". The master module is the Low Ambient Operation the selectable enthalpy values by potentiometer setting. whenever coil icing conditions begin to significantly reduce ReliaTel Refrigeration Module (RTRM). During low ambient operation, outside air temperature be- If the outside air enthalpy value is less than the selected unit capacity. To permit defrost, the outdoor temperature low 55 F, the RTRM will cycle the compressor and outdoor value, the economizer is allowed to operate. must be below 52 F, coil temperature must be below 33 F, The RTRM rovides compressor anti -short cycle timing fan motor "Off" for approximately 3 minutes after every 10 p p y g and the delta temperature F must exceed a RTRM calcu- functions through minimum "Off" and "On" timing to in- minutes of accumulated compressor run time. The indoor 3. Comparative Enthalpy - By utilizing a humidity sensor lated value. After 30 minutes of run time under defrost per - ±ease reliability, performance and to maximize unit effi- fan motor ( IDM) w ill continue to operate during this evapo- and a temperature sensor in both the return air stream y p mit conditions, the RTRM initiates a defrost cycle. Upon ter- : iency. rator defrost cycle (EDC) and the compressor and outdoor and the outdoor air stream, the unit control processor urination of this cycle, the RTRM monitors the outdoor tern- fan will return to normal operation once the defrost cycle RTRM) will be able to establish which conditions are perature (ODT) and the coil temperature (CT) and calcu Upon power initialization, the RTRM performs self -diag- has terminated and the compressor "Off" time delay has best suited for maintaining the zone temperature, i.e. in- lates the delta temperature F (ODT - CT). This value is nostic checks to insure that all internal controls are func- been satisfied. I door conditions or outdoor conditions. The potentiom- stored in memory and the RTRM calculates a defrost ini- tioning. It checks the configuration parameters against the eter located on the ECA is non - functional when both the tiate value. The RTRM continually compares the delta tern- components connected to the system. Cooling with an Econo mizer ) temperature and humidity sensors are installed. p y perature F to the defrost initiate value. Once the delta tee When the system is in the "Cool" MODE, the RTRM ener- r reaches the initiate value, a defrost cycle is initiated. The LED located on the RTRM module is turned "On" gizes relay (K3). When the normally open (K3)contacts close, the switch over valve (SOV) is energized. The within one second after power -up if all internal Potentiometer Dry Enthalpy During the defrost cycle, the RTRM energizes the relay operations are okay. economizer is utilized to control the zone temperature pro- viding the outside air conditions are suitable. Outside air is Setting Bulb (K3), which energizes the switch over valve (SOV) through drawn into the unit through modulating dampers. When A 73* 27 the normally open K3 relay contacts. Then turns the out- Cooling without an Economizer door fan motor (ODM) "Off" by de- energizing the (K8) relay, When the system is in the "Cool" MODE, the RTRM ener- cooling is required and economizing is possible, the B 70 25 which de- energizes the (ODF) relay. The RTRM energizes gizes relay (K3). Wh en the normally open (K3) contacts RTRM sends the cooling request to the u e conomizer close, Y ( ) Y P ( ) C 67 23 the auxiliary electric heat contactor (AH) and (BH) (if appli- close, the switch over valve (SOV) is energized. When the actuato (ECA to open the economizer damper. The RTRM D 63 22 cable) if they are not operating, while maintaining corn- zone temperature rises above the cooling setpoint tries to cool the zone utilizing the economizer to slightly P g p below the zone temperature setpoint. If the mixed air sen- * Factory Setting pressor (CPR1) operation. controlband, the RTRM energizes the (K9) relay coil on the sor (MAS) senses that the mixed air temperature is below RTRM. When the (K9) relay contacts close, the compressor The defrost cycle is terminated based on the RTRM termi- 53 F, the damper modulates toward the closed position. If contactor (CC1) coil is energized provided the low pres- nation temperature calculation using the outdoor tempera - the zone temperature continues to rise above the zone Heating Operation sure control (LPC1) and high pressure control (HPC1) are ture (ODT) + 27 F. The defrost termination temperature closed. When the CC1 contacts close, compressor (CPR1) temperature setpoint controlband and the economizer When the system switch is set to the "Heat" MODE, th (DTT) will typically be between 37 F and 52 F. and the outdoor fan motor (ODM) starts provided the nor- damper is fully open, the RTRM energizes the compressor RTRM energizes rela ( K 3) . W hen the normally ope ( K 3 ) contactor (CC1). contacts open, the switch over valve (SOV) is de -ener- mally open (ODF) relay contacts are closed, to maintain Emergency Heat Operation the zone temperature to within ± 2 F of the sensor setpoint gized. When the zone temperature falls below the heating When the system selection switch is in the "EM HEAT" at the sensed location. The ECA continues to modulate the economizer damper setpoint controlband, the RTRM energizes th (K9 relay MODE, and the zone temperature falls below the heating open /closed to keep the mixed air temperature that is cal- coil on the RTRM. When the (K9) relay contacts close, the setpoint controlband, the RTRM bypasses compressor and Evaporator Fan Operation culated by the RTRM. compressor contactor (CC1) coil is energized provided th outdoor fan operation and energizes the K1 relay located When the fan selection switch is set to the "Auto" position, low pressure contr (LPC1 and high pressure control on the RTRM. When K1 relay contacts close, the first stage the RTRM energizes the (K6) relay coil approximately 1 If economizing is not possible, the ECA drives the dampe (HPC1 are closed. When the CC1 contacts close, com auxiliary electric heat contactor (AH) is energized. If the to the minimum position setpoint when the indoor fan relay pressor (CPR1) and the outdoor fan motor (ODM) starts second after energizing the compressor contactor coil first stage of auxiliary electric heat can not satisfy the heat - (CC1) in the cooling mode. In the heating mode, the RTRM (F) is energized and allows mechanical cooling operation. provided the normally open (ODF) relay contacts are ing requirement, the RTRM energizes the K2 relay coil lo- closed, to maintain the zone temperature to within ± 2 F of energizes the (K6) relay coil approximately 1 second be- cated on the RTRM. When the K2 relay contacts close, the fore energizing the electric heat contactors. Closing the When the unit is equipped with the optional fan failure the sensor setpoint at the sensed location. second stage auxiliary electric heat contactor (BH) is ener - switch, wired between terminals J7 -5 and J7 -6 on the (K6) contacts on the RTRM energizes the indoor fan relay gized. The RTRM cycles both the first and second stages of RTOM the RTRM will stop all cooling functions and pr The RTRM "Smart Recovery" function monitors the rate at (F ) c oil to start the indoor fan motor ( IDM ) . 4 heat "On" and "Off" as required to maintain the zone tern- duce an analog output if the fan failure switch (FFS) does which the zone temperature is changing every 9 minutes perature setpoint. The RTRM de- energizes the fan relay (F) approximately 60 not open within 40 seconds after a request for fan opera- during the operating heating cycle. If the zone temperature seconds after the cooling requirement has been satisfied tion. When the system is connected to a remote panel, the is rising at a rate greater than 6 F per hour, no additional to enhance unit efficiency. When the heating cycle is termi "SERVICE" LED will flash when this failure occurs. _ heat is requested (auxiliary electric heat). If not, the RTRM nated, the indoor fan relay (F) coil is de- energized at the energizes the first stage auxiliary electric heat contactor same time as the heater contactors. Economizer Set -Up (AH) (electric heat optional). A minimum of 10 seconds Adjusting the minimum position potentiometer located on "Off" time must have elapsed between heater cycles. If me- When the fan selection switch is set to the "On" position, the unit economizer actuator (ECA) sets the required chanical heat and first stage auxiliary heat cannot provide the RTRM keeps the indoor fan relay coil (F) energized for amount of ventilation air. the 6 F recovery rate, the RTRM energizes second stage continuous fan motor operation. auxiliary heat contactor (BH), if applicable. The RTRM con - Two of the three methods for determining the suitability of - tinues to monitor the rate of change and stages the electric When the unit is equipped with the optional clogged filter the outside air can be selected utilizing the enthalpy poten- heat "Off" as it determines that the mechanical heat (corn - switch, wired between terminals J7-3and J7-4 on the tiometer on the ECA, as described below: pressor operation) is sufficient. • ReliaTel Options Module (RTOM), the RTRM produces an - analog output if the clogged filter switch (CFS) closes for 1. Ambient Temperature controlling the economizing cycle two minutes after a request for fan operation. When the by sensing the outside air-dry bulb temperature. The III III table below lists the selectable dry bulb values by po- tentiometer setting. 6 7 • //r • • t 7" 01 Economizer 4 1 1 . , • Model Number: Used With: BAYECON085A T*CO36-060A*R YHCO33-063A*R TSC/YSCO36E*R WSCO36-060A*R THCO33-063A*R WSCO36E-048E*R Y*CO36-060A*R THC/YHCO36E*R BAYECON086A T*CO36-060A*E Y*CO36-060A*E THC/YHCO36E*E TSC/YSCO36E-060E*E BAYECON087A T*C072-120A*R TSC072-120E*R THC/YHC048-060E*R YSC072-120E*R Y*C072-120A*R WSC060E*R WSC072-120A*R Digitally printed on " BAYECON088A T*C072-120A*E TSC072-120E*E environmentally friendly paper; 1. produced using fewer trees and — Y*C072-120A*E YSC072-120E*E chemicals and less energy. , • THC/YHC048-060E*E Literature Order Number ACC-SVN44C-EN Date 05/07 Supersedes ACC-SVN44B-EN (10/06) May 2007 ACC-SVN44C-EN The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. . . Installation • • Hazard Identification Parts List Remove unit end panel, retain the screws removed from the top of Warnings and Cautions appear at • 1 - Economizer Assembly panel and the screws removed from appropriate sections throughout this • 1 - Mist Eliminator bottom of panel for use later. manual. Read these carefully. • 10 - Screws (T/Y033 -063 units), Downflow Installation OWARNING (W036 -060 units, except for T/ For Downflow Installation, assemble 4 YHC048 -060E, and WSC060E *R) Indicates a potentially hazardous end panel to the economizer. Refer to situation which, if not avoided, could • 12 - Screws (T/W/Y072 -120, T/ Figure 2 . result in death or serious injury. YHC048 -060E and WSC060E *R units) CAUTION • 1 - Sensor; Thermistor Figure 2. Indicates a potentially hazardous • 1 - PANE Grommet PANEL (3)SLOTS IN rommet situation which, if not avoided, may (3)TABS ON SIDE result in minor or moderate injury. It • 1 - Tie; Wire PANEL. PIVOT , PANEL INTO PLACE may also be used to alert against • 1 - Barometric Duct Blockoff unsafe practices. Plate ALIGN (3)TABS ON ' - - -_ CAUTION BRACKET WITH �/ WARNING (3)SL0TS IN PANEL. I PIVOT INTO PLACE Indicates a situation that may result Hazardous Voltage! AND SECURE WITH Ilifi in equipment or property- damage ENGAGED IN o / /:1 onl accidents. Disconnect all electric power, ECONOMIZER SIDE y including remote disconnects before PANEL l � p servicing. Follow proper lockout / Model Number Description tagout procedures to ensure the �,I I +- r identified power can not be inadvertently Illy l al All products a e by a energized. Failure to disconnect multiple- character model number that precisely identifies a particular power before servicing could result ;/ too in death or serious injur . type of unit. Its use will enable the I y -- owner /operator, installing Each economizer ships with items 1, contractors, and service engineers to 2 and 3 attached. Remove screws Horizontal Installation define the operation, specific completely from items 1 and 2. components, and other options for Remove item 3 by loosening the 3 For Horizontal Installation, assemble any specific unit. screws but do not remove them. end panel to the economizer. Refer to When ordering replacement parts or Refer to Figure 1. Figure 3 for disassembly instructions requesting service, be sure to refer of the downflow configuration. to the specific model number and Figure 1. serial number printed on the unit nameplate. ECONOMIZER SHIPS WITH ITEMS 1, 2, & 3 ATTACHED. REMOVE SCREWS AND DISASSEMBLE ITEMS 1 & 2. REMOVE ITEM 3 BY BACKING THE THREE SCREWS OUT (DO NOT REMOVE Installation - Field SCREWS). Installed i Note: This instruction covers 0 installation of BAYECON085A, BAYECON086A (T/Y033 -063 units) , (W036 -060 units, except T/YHC048- y 060E, and WSC060E *R) and BAYECON087A, BAYECON088A (T/ W/Y072 -120, T/YHC048 -060E and �I WSC060E *R units) 0 if I� - Uncrate the economizer and locate � all parts shown in Figure 1. 111 + III III , r� ., .., DO NOT � �.�' REMOVE SCREWS 2 ACC -SV N44C -E N .. . I. . Installation • • • Optional Sensors . . Figure 3. (ReliaTel Only) FOR FIELD INSTALLATION, )i If the optional sensors for humidity ASSEMBLE ECON PANEL BEFORE CONVERTING TO ■ and temperature monitoring are to At HORIZONTAL. M REMOVE TWO SCREWS be used (BAYENTHOO5A and TO LIN DISASSEMBLE KAGE BRACKET . BAYENTHOO6A), install them now. III Use the instructions provided in the , 1611 ;/ REMOE SIX SCREWS TO kits.) , , DISASSEMBLE RETURN AIR BLADE ASSEMBLY FROM 1.1 11 1 ECONOMIZER. Blockoff Asssembly Ii 11101 S LOCATION The return duct blockoff plate(S) of HORIZONTAL must be installed prior to the / , �� NKAGE ROD. installation of the economizer in the �\ .�j� unit. Refer to Figure 6 for installation in units without Return Air Smoke ��� r Detector. If the unit has a Return Air /� Smoke Detector, refer to Figure 6 for REMOVE NUT AND i ,, AFTER CUTTING SIDE WALLS, installation. DISASSEMBLE LINKAGE SNAP THIS PIECE APART FROM MAIN BLADE AND DISCARD. Note: If either Power Exhaust or CUT SIDEWALL (TWO PLACES) "FOR HORIZONTAL m Barometric Relief Accessory APPLICATIONS ONLY ** kits are installed along with Refer to Figure 4 for reassembly an Economizer, do not install instructions to Horizontal the duct blockoff plate. configuration. III • Figure 5. Figure 4. SECURE RETURN AIR DAMPER BLADE ASSEMBLY TO SIDE • PANEL WITH 2 SCREWS CONNECT ROD TO BALL JOINT. DO NOT ALLOW MORE `_ \' / il TO PROTRUDE THROUGH BALL JOINT. \' THAN 25' 6.25MM OF ROD Iii0 a ' II !► I L , HORIZONTAL APPLICATIONS: \ � 0 44 DISCARD BLOCKOFF PLATE I. iiii *I' RR``,,�' DOWN FLOW APPLICATIONS: ® � \ ASSEMBLE DUCT BLOCKOFF PLATE BEFORE INSTALLING ECONOMIZER. FLANGE IS DOWN IF THERE IS NO SMOKE DETECTOR. Note: If Power Exhaust IF UNIT HAS A FIOP or Barometic Relief SMOKE DETECTOR, accessory kits are REMOVE THIS installed along with an SECURE RETURN AIR KNOCKOUT TO ALLOW Economizer, do not SE IR DAMPER CLEARANCE FOR THE install duct blockoff BLADE RETURN TO REAR PANEL WITH 2 SCREWS SMOKE DETECTOR plate. TUBE i 0 ill f I ACC- SVN44C -EN 3 Installation Installation 0 • 5. Pull the economizer assembly The damper will open to this setting Figure 6. Figure 7. Figure 8. Figure 9. and end panel out of the unit. each time the blower circuit is 6. Refer to Figure 3 and Figure 4 for energized. '� reassembly instructions to When adjusting minimum position, . Horizontal configuration. the damper may move to the new j rttl setting in several has small steps. Once i Note (ReliaTel units onl y) I f , ,,,, r . � -'" \ �._ optional sens fo r h umidity in I, \ �� and tam erat m on itorin for the 10 damper 15 seconds without \ I ° g movement, it can be remained assumed position it is at I` I /• -�' 1 are to be used i �. _ Il the new position. ��. �� in ,4 (BAYENTHOO5A and • - � I��: ,4 � 1 � BAYENTH006A), install them Replace the filter access panel. BOTTOM BLOCKOFF now. Use the instructions '�^ . � � r The damper will close when the HORIZONTAL APPLICATIONS � blower circuit is de energized. \�\ provided in the k its.) \/ � ` b DSCARD BLOCKOFF PLATE REMOVE SCREW O 7. Remove supply and return duct DOWNFLOW APPLICATIONS: RELOCATE BOTTOM BLOCKOFF covers from the horizontal Bulb Tiwiv002_ ONLY FROM SHIPPING LOCATION. Dry BUILD Settings ASSEMBLE RETURN AIR BLOCKOFF ASSEMBLE DUCT BLOCKOFF PLATE BEFORE INSTALEING ECONOMIZER openings and install over the FLANGE IS DETECTOR THERE IS NO Standard economizer dr bulb SMOKE DETECTOR. downflow opening. Y Note: If Power Exhaust changeover is field selectable to 4 Install the Mixed Air Sensor with or Barometic Relief 3. Remove the bottom three screws 9 8. To reinstall the economizer, lift ASSEMBLE DUCT BLOCKOFF PLATE accessory kits are from the economizer panel. outdoor temperatures. See the BEFORE INSTALLING ECONOMIZER. grommet, secure with pop -in wire tie. installed along with an into position by fitting the upper following table for potentiometer FLANGE IS UP IF THERE IS A SMOKE Economizer, do not 9 p DETECTOR REMOVE KNOCKOUT IN Connect to exiting jumper install duct blockoff 4. Pull the economizer assembly left hand corner around the settings.The selection is made on the BLOCKOFF FOR SMO KE KE ALLOW DE TECTOR connections located in the Indoor Fan plate out into operating position as channel in the cabinet post. Then g AANCR MK DETECTOR p g p p ECA. TUBE. Section. Refer to Figure 8. shown if Figure 10. pivot the economizer into the Note: If Power Exhaust opening in the cabinet. Refer to or Barometic Relief 5. Secure the economizer assembly p g Reference Enthalpy Settings accessory kits are Wiring Connections I - Factory Figure 7. installed along with an g y with 2 screws at the bottom of R Economizer, do not ReliaTel Units Installed the corner posts. 9. Lift the economizer and panel Economizer enthalpy changeover is install duct blockoff assembly to align the upper two p late. Locate unit wiring harness plug field selectable to 4 points. See the Lit wiri hlug P7 Economizer Set -Up • 6. Install boom blockoff and screw holes following table for potentiometer • holes. Secure the top by inserting 2 screws, top left 1 then and plug into J7 on the actuator secure with tt 3 screws. settings. The selection is made on the motor. Downflow Configuration top right 2. Refer to Figure 7. ECA. Note: On (T/W/Y C072 -120, T/ Note: if Options Module (RTOM) is ' YHC048 -060E and WSC060E not installed then connect To position economizer for Downflow Figure 10. 10. Pull out on the bottom of the units) Downflow units only, plug 3P4 to 3J4 on the operation, complete the following economizer and secure Table 1. Potentiometer settings install return air blockoff. See steps: • bottom left 3. Refer to Figure 7. Refrigeration Module (RTRM) i Potentiometer Dry Figure 6. in the control box. I I 11. Replace adapter panel removed Setting Bulb Enthalpy To install the economizer, lift into WARNING I in Step 2. A 73F* 27 Btu/lb (63 ' position by fitting the upper left hand Electromechanical Units Hazardous Voltage! (22.8C) kJ /kg) • i lissO 12. Secure bottom right with screw corner around the channel in the Disconnect all electric power, engaging into adapter panel. e 7oF 25 Btu/lb (58 Locate unit wiring harness plug including remote p p cabinet post. Then pivot the g emote disconnects before (21.1C) kJ /kg) PPM2A and plug into the actuator economizer into the opening in the p g servicing. Follow proper lockout/ 13. Install the bottom blockoff and C 67F 23 Btu/lb (53 motor wiring harness. t out procedures to ensure the secure with 3 screws. Refer to cabinet. Refer to Figure 7. g P (19.4C) kJ /kg) Replace access panels. power can not be inadvertently Figure 10. D 63F 22 Btu /lb (51 Once the economizer is in place, lift energized. Failure to disconnect 4 (17.2C) kJ /kg) the economizer and panel assembly �t power before servicing could result 7; BOTTOM BLUCKDFF Minimum Position Setting to align the upper two screw holes. \ in death or serious injury. / * Factory Setting Secure the top by inserting 2 screws, SCREWS USED ER To adjust the minimum position top left 1 then top right 2 screws. 1. Remove filter access panel. i ' setting and check out the economizer, Table 2. Economizer option controls Pull out on the bottom of the 2. Remove bottom blockoff from its the power must be connected. Optional Ho SERE ECONOMIZER � rizonta C Control Enable Sensors economizer and secure bottom left 3 shipping location. See Figure 9. I Close the unit disconnect and place Conditions* P Option Conditions * Required ** screws. i ', To position economizer for horizontal the zone sensor fan selector in the 1:; Dry Bulb See Table None Remove the filter access panel. operation, complete the following fan "ON" position and the heat /cool (standard) Above Position the adapter backing plate - steps: selector in the "OFF" position. This inside the filter section. The adapter 1. Remove filter access panel. will place the damper in the Reference See Table Outdoor Enthalpy Above Humidity i mnimum ventilation position. (ReliaTel Only) (BAYENTHOO5A) plate will slip over the 3 ( v) ( ) screws that were loosened in figure 2. Remove item 3, adapter panel To adjust the minimum position Comparative Outdoor Air Outdoor 1. Align the screw engagement hole shown in Figure 1. setting for the required ventilation Enthalpy Enthalpy 3.0 Humidity in the adapter backing plate, with the III • 3. Remove the bottom three screws air, turn the potentiometer (on the (ReliaTel Only) BTU /Ib. less Return Humidity screw clearance hole in panel and than Return Return p and top two screws from the ECA) clockwise to "op (to increase Air Enthalpy Temperature secure lower right side of economizer economizer panel. the amount of ventilation) or (BAYENTH006A) with screw 4. counterclockwise to "close" (to 4. Remove return air blockoff Install the bottom blockoff and secure decrease the amount of ventilation). Economizing is enabled when these conditions are with 3 screws. shown in figure 7. met. - Conditions level will be self configured when op- tional sensors are connected 4 ACC- SVN44C -EN ACC- SVN44C -EN 5