Page 3 - Product Identifier
P roduCt n omenClature Category Code Item Code Option Code Designation & Description Product Category 1 1 W = Water Source Heat Pump Product Identifier 2 2-4 WCA = Base Cooling Only Unit with Copper Coaxial Water Coils WHA = Base Heating Only Unit with Copper Coaxial Water Coils WRA = Base Cooli...
Page 4 - Safe Operation Rules; To prevent electrical shock, disconnect electric power to; CAUTION; WARNING; Do Not Vent; Clean Air Act requires the recovery of any residual re
s afety I nformatIon Safe Operation Rules Installation and maintenance are to be performed only by qualified personnel who are familiar with and in com - pliance with state, local and national codes and regula - tions, and experienced with this type of equipment.Please take a few minutes to read the...
Page 5 - Table 1: Electrical data; Breaker; FLA = Full Load Amps
e leCtrICal d ata WRA, WHA, WCA 036 – 420 Table 1: Electrical data Unit Size Voltage/Hz/Ph Compressor Total Unit FLA Voltage Min ./Max . Minimum Circuit Ampacity Max . Circuit Breaker Maximum Fuse HACR Breaker Quantity RLA (each) LRA (each) 036 208-230/60/1 1 16.7 79 .0 33 .4 197/253 20 .9 35 35 208...
Page 6 - Table 2: Capacity data; Mounting the Unit; Note: It is important that both water lines be insulated. For run
I nstallatIon Pre-Installation and Code Requirements After removing the unit from the carton, immediately remove the panels and inspect for any damage that might have occurred during shipment. Report concealed damage immediately to the transportation company and request inspection.The electric power...
Page 7 - on page; Water piping exposed to outside may freeze.; Well Water Application Open Loop
a PPlICatIons 7 . Electric, Double element - Upper 125°F, Lower minimum Gas, Oil or Single element - 125°F 8 . Wire according to single phase diagram ( on page 14 ) and three phase diagram ( on page 19 and on page 24 ). 9 . The piping and wiring are now complete. Turn on water supply to water heater...
Page 8 - Start Up; Maintenance Procedures; Notes: DO NOT place refrigeration gauges on system for
a PPlICatIons Typical Load Side Applications There are many load side applications for which the fluid to fluid liquid chiller heat pumps can be used. The most popular used would include: Hydronic baseboard heating, hydronic in-slab floor heating, forced air fan coil heating or cooling, ice and snow...
Page 9 - Dimensions - Size 036
d ImensIonal d ata WRA, WCA, WHA – Size 036-072 Dimensions - Size 036 Dimensions (in .) Pipe Size (FPT) Connection Size A B C D E F G H J K L M N P Control Electric Auxiliary Electric Load Source Domestic Hot Water 28⅛ 28⅛ 19 1¾ 6⅜ 3⅞ 2 11⅞ 17⅛ 4 1½ 14⅞ 10⅝ 8⅝ 1/2" KO 3/4" KO 1/2" KO 3/4...
Page 10 - Dimensions - Size 180
d ImensIonal d ata WRA, WCA, WHA – Size 120-180 Dimensions - Size 120 – 150 Dimensions (in .) Water Connection Size A B C D E F G H K L M N P Q R S Load Source FPT 26¼ 19½ 12¼ 4½ 8⅜ 22¼ 4⅜ 18¾ 41 22⅛ 34 1 1 13 / 16 37 29¾ 42 1½" Dimensions - Size 180 Dimensions (in .) Water Connection Size A B C...
Page 12 - Physical Data; Cooling Mode; Table 4: Models WRA and WCA; Heating Mode; Table 5: Models WRA and WHA
e ngIneerIng d ata Physical Data Table 3: WRA, WHA, WCA 036 – 420 Unit Size Cabinet Dimensions (in .) Unit Weight (lb .) Factory Refrigerant Charge Per Cicuit (lb .) Water Connections (in .) Width Depth Height Operating Shipping FPT 036 28 .125 28 .125 19 .00 250 259 2 .80 0 .75 048 28 .125 28 .125 ...
Page 13 - Antifreeze Correction; perrformance reductions.; Waterflow Correction
e ngIneerIng d ata Antifreeze Correction Antifreeze Heating Capacity Cooling Capacity Pessure Drop Load Source Load Source Type Percent 90°F EWT 30°F EWT 45°F EWT 90°F EWT 30°F EWT Water 0 1 .000 1 .000 1 .000 1 .000 1 .000 Ethylene Glycol 10 0 .991 0 .973 0 .975 0 .991 1 .075 20 0 .979 0 .943 0.946...
Page 14 - Note: See wiring diagram legend on
W IrIng d Iagram 208-230/60/1, Unit Sizes 036, 048, 060 Note: See wiring diagram legend on page 15 . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 T3 T2 T1 CM CC L2 T2 CC L1 T1 WIRING DIAGRAM # 0962I-2631B, REV.B W...
Page 15 - Legend
W IrIng d Iagram Legend 208-230/60/1, Unit Sizes 036, 048, 060 FIELD POWER SUPPLY PER UNIT RATING PLATE. MINIMUM CIRCUIT AMPACITY AND MAXIMUM SIZE OF TIME-DELAY FUSE OR HACR-TYPE CIRCUIT BREAKER PER UNIT RATING PLATE. PROVIDE DISCONNECTING MEANS AND EQUIPMENT GROUNDING AS REQUIRED. TRANSFORMER MAY H...
Page 16 - Note: Always disconnect power to WW* unit before moving; Figure 2: Thermistor temperature vs. resistance graph; Thermistor Temperature Vs. Resistance
C ontrol Optional Low Temperature Control Board "LTC" – 208-230/60/1, Unit Sizes 036, 048, 060 The control board is powered by 24 volts AC, 50/60 hertz which is applied to the 24 VAC terminals. The control will energize the output relays (COM 1 makes connection with NO 1 and COM 2 makes conn...
Page 17 - Note: The 60 psig low pressure switch is jumpered out in low; Operation Of The HPS Terminals
C ontrol Compressor Control Module Functional Operation 208-230/60/1, Unit Sizes 036, 048, 060 Power: For proper operation there must always be 18 to 30 volts AC present at the R and C terminals. Time Delays: 1 . Anti-short cycle: provides the compressor with short cycle protection for a selectable ...
Page 18 - Figure 3: Compressor control module functional operation; Disconnect power to
C ontrol Figure 3: Compressor control module functional operation LPS Y HPS T1 T C R X P1 0 P1 1 P 12 10 SEC 5MI N P7 P8 P9 3 SEC 6 SEC P5 P4 P3 P2 P1 30 0 18 0 12 0 90 LP S BYPAS S SEC O N D S D O M AS C R LED: O FF = N O Y SI G N ALPRESEN T O N = Y SI G N ALPRESEN T 1 BL IN K = FAULT O N H PSTERM ...
Page 21 - Figure 5: Thermistor temperature vs. resistance graph
C ontrol Optional Low Temperature Control Board "LTC" – 208-230/60/3, Unit Sizes 036, 048, 060 and 072 The control board is powered by 24 volts AC, 50/60 hertz which is applied to the 24 VAC terminals. The control will energize the output relays (COM 1 makes connection with NO 1 and COM 2 ma...
Page 23 - Figure 6: Compressor control module functional operation
C ontrol Figure 6: Compressor control module functional operation LPS Y HPS T1 T C R X P1 0 P1 1 P 12 10 SEC 5MI N P7 P8 P9 3 SEC 6 SEC P5 P4 P3 P2 P1 30 0 18 0 12 0 90 LP S BYPAS S SEC O N D S D O M AS C R LED: O FF = N O Y SI G N ALPRESEN T O N = Y SI G N ALPRESEN T 1 BL IN K = FAULT O N H PSTERM ...
Page 24 - Note: See continuation of wiring diagram on
W IrIng d Iagram 208-230/60/3, Unit Sizes 120, 150, 180, 240 and 300 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 T3 T2 T1 CM1 CC1 L3 T3 L2 T2 L1 T1 R- BL- BK- CC2 T3 T2 T1 CM2 L3 T3 L2 T2 L1 T1 1 TB3 4 EGB L1 L2 L3 ...
Page 25 - Continuation of wiring diagram from
W IrIng d Iagram (Continued) 208-230/60/3, Unit Sizes 120, 150, 180, 240 and 300 Note: Continuation of wiring diagram from page 24 47 48 49 50 51 52 53 54 WIRING DIAGRAM # 0962I-2633B, REV. B WW* 120, 150, 180, 240, 300 THREE PHASE 55 56 57 58 59 60 61 62 63 64 65 22 TB1 2 Y CR1 CR2 BR G-14 RVS1 RVS...
Page 27 - Figure 8: Thermistor temperature vs. resistance graph
C ontrol www.DaikinApplied.com 27 WRA, WHA, WCA WATER TO WATER WSHP • IM 1072-3 Optional Low Temperature Control Board "LTC" – 3 Phase, Unit Sizes 120, 150, 180, 240 and 300 The control board is powered by 24 volts AC, 50/60 hertz which is applied to the 24 VAC terminals. The control will en...
Page 29 - Figure 9: Compressor control module functional operation
C ontrol Figure 9: Compressor control module functional operation LPS Y HPS T1 T C R X P1 0 P1 1 P1 2 10 SEC 5MI N P7 P8 P9 3 SEC 6 SEC P 5 P4 P3 P2 P1 30 0 18 0 12 0 90 LPSBYPASS SEC O N D S D O M ASC R LED: O FF = N O Y SI G N ALPRESEN T O N = Y SI G N ALPRE SEN T 1 BL IN K = FAULT O N H PSTERMI N...
Page 31 - Note: Continuation of wiring diagram from
W IrIng d Iagram (Continued) 208/230- 60-3, Unit Sizes 360, 420 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 20 TB1 BL 2 PM 8 1 R Y CR1 CR2 BL BR G-14 RVS1 RVS2 BK BK 13 BK BK BK CR2 4 6 CR1 4 6 PR PR PR PR TS-C TS-H 25,63 36,64 52 CHR 1 3 11 (WHEN USED) 19 18 BR BR (WHEN REQ’D) SPLICE 10 C...
Page 33 - Figure 11: Thermistor temperature vs. resistance graph
C ontrol www.DaikinApplied.com 33 WRA, WHA, WCA WATER TO WATER WSHP • IM 1072-3 Optional Low Temperature Control Board "LTC" – 208/230-60-3, Unit Sizes 360, 420 The control board is powered by 24 volts AC, 50/60 hertz which is applied to the 24 VAC terminals. The control will energize the ou...
Page 35 - Figure 12: Compressor control module functional operation
C ontrol Figure 12: Compressor control module functional operation LPS Y HPS T1 T C R X P1 0 P1 1 P1 2 10 SEC 5MI N P7 P8 P9 3 SEC 6 SEC P 5 P4 P3 P2 P1 30 0 18 0 12 0 90 LPSBYPASS SEC O N D S D O M ASC R LED: O FF = N O Y SI G N ALPRESEN T O N = Y SI G N ALPRE SEN T 1 BL IN K = FAULT O N H PSTERMI ...
Page 39 - Figure 14: Thermistor temperature vs. resistance graph
C ontrol www.DaikinApplied.com 39 WRA, WHA, WCA WATER TO WATER WSHP • IM 1072-3 Optional Low Temperature Control Board "LTC" – 460-60-3, 575-60-3, Unit Sizes 360, 420 The control board is powered by 24 volts AC, 50/60 hertz which is applied to the 24 VAC terminals. The control will energize ...
Page 41 - Figure 15: Compressor control module functional operation
C ontrol Figure 15: Compressor control module functional operation LPS Y HPS T1 T C R X P1 0 P1 1 P1 2 10 SEC 5MI N P7 P8 P9 3 SEC 6 SEC P 5 P4 P3 P2 P1 30 0 18 0 12 0 90 LPSBYPASS SEC O N D S D O M ASC R LED: O FF = N O Y SI G N ALPRESEN T O N = Y SI G N ALPRE SEN T 1 BL IN K = FAULT O N H PSTERMI ...
Page 42 - Model WHA
C IrCuIt d Iagrams Model WHA Load Coil = Heater-Condenser, Source Coil = Evaporator IM 1072-3 • WRA, WHA, WCA WATER TO WATER WSHP 42 www.DaikinApplied.com
Page 43 - Model WRA; Reverse Cycle, No Domestic Hot Water
C IrCuIt d Iagrams Model WRA Reverse Cycle, No Domestic Hot Water Reverse Cycle, With Domestic Hot Water H .R . Coil www.DaikinApplied.com 43 WRA, WHA, WCA WATER TO WATER WSHP • IM 1072-3
Page 44 - Model WCA
C IrCuIt d Iagrams Model WCA Load Coil = Chiller-Evaporator, Source Coil = Condenser, No Domestic Hot Water Load Coil = Chiller-Evaporator, Source Coil = Condenser With Domestic Hot Water H .R . Coil IM 1072-3 • WRA, WHA, WCA WATER TO WATER WSHP 44 www.DaikinApplied.com
Page 45 - General Information; Unit Function
C HeCk , t est and s tart f orm General Information Customer Name ____________________________________ Dealer Name ______________________________________ Address ___________________________________________ Address __________________________________________ ___________________________________________...
Page 46 - Symptom
g eneral s ervICe g uIde All models employ an electromechanical control system for maximum reliability. Symptom Possible Trouble Method of Finding 1. Noisy Operation. a. Chattering contactor noise. a. Check contactor points, check for adequate control voltage from transformer, and check control circ...
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