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835966-UIM-A-0112

Johnson Controls Unitary Products

9

For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at www.upgnet.com in the
Product Catalog Section.

 FIGURE 10: 

Thermostat Wiring – 

Single Stage Heat Pump (with YGVI control) 

– Modulating Furnace

    

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Summary of Contents for HC8B Series

Page 1: ...ENERAL The outdoor units are designed to be connected to a matching indoor coil with sweat connect lines Sweat connect units are factory charged with refrigerant for the smallest rated indoor coil plus 15 feet of field supplied lines Matching indoor coils are available with a thermal expansion valve or an orifice liquid feed sized for the most common usage The orifice size and or refrigerant charg...

Page 2: ...o the outdoor unit Provide an adequate structural support ADD ON REPLACEMENT RETROFIT When this unit is being used as a replacement for an R 22 unit it is required that the outdoor unit indoor coil and metering device all be replaced The following steps should be performed in order to insure proper system operation and performance Line set change out is also recommended 1 Change out of the indoor ...

Page 3: ...s to the coil air handling system or filter 3 Care must also be taken to isolate the refrigerant lines to minimize noise transmission from the equipment to the structure 4 The vapor line must be insulated with a minimum of 1 2 foam rub ber insulation Armaflex or equivalent Liquid lines that will be exposed to direct sunlight and or high temperatures must also be insulated 5 Tape and suspend the re...

Page 4: ...r to the Tabular Data Sheet for proper vapor line siz ing 6 Protect the vapor valve with a wet rag and braze the vapor line con nection to the outdoor unit The nitrogen flow should be exiting the system from the vapor service port connection After this connection has cooled remove the nitrogen source from the liquid fitting service port 7 Replace the Schrader core in the liquid and vapor valves 8 ...

Page 5: ... tighten and turn an additional 1 4 turn to seal Do not overtighten fittings 5 Install the liquid line to the top of the thermal expansion valve with fitting supplied with the liquid line Hand modify the liquid line to align with casing opening Hand tighten the liquid line and an addi tional 1 4 turn to seal 6 Install the TXV equalizer line into the vapor line as follows a Hand tighten the 1 4 SAE...

Page 6: ...Determine indoor coil adjustment from tabular data sheet 3 Calculate the line charge using the tabular data sheet if line length is greater than 15 feet 4 6 m 4 Total system charge item 1 item 2 item 3 5 Permanently stamp the unit data plate with the total amount of refrigerant in the system Use the following charging method whenever additional refrigerant is required for the system charge If a ca...

Page 7: ...over and service access panel removed in Steps 2 and 4 of the Field Connections Power Wiring section 4 All field wiring to be in accordance with national electrical codes NEC and or local city codes 5 Mount the thermostat about 5 ft above the floor where it will be exposed to normal room air circulation Do not place it on an outside wall or where it is exposed to the radiant effect from exposed gl...

Page 8: ...n control is installed it is recommended that a mini mum air flow of 325 cfm ton be supplied at all times INDOOR CFM CONFIGURATION For proper system operation the indoor CFM must be set properly Refer to the Technical Guide for the outdoor unit for the recommended air flow settings for each size condensing unit and matching indoor unit Set the cooling speed per the instructions for the air handler...

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Page 10: ...HW 6HQVRU 25 8 5 9 21752 6 1 67 7 3803 KDQJH XHO MXPSHU RQ WKH KHDW SXPS FRQWURO WR 21 RQQHW 6HQVRU LW 2SWLRQDO 6 3DUW 1XPEHUV 6 3 XPSHU PXVW EH VHW WR 2 LUVW 6WDJH RPSUHVVRU 6HFRQG 6WDJH HDW 2 LUVW 6WDJH HDW 80 DQ 6 7 68 3 E 7 50267 7 7KLUG 6WDJH HDW 5 9ROW RW 6HFRQG 6WDJH RPSUHVVRU 80 DXOW 9ROW RPPRQ XPSHU PXVW EH VHW WR 6 XPSHU PXVW EH VHW WR 73803 6XJJHVWLRQ 6HW VHWXS VWHS QG 6WDJH HDGEDQG DQG...

Page 11: ...ompressor O Reversing Valve Energized in Cool X L Malfunction Light HUM Humidity Switch Open on Humidity Rise HUM OUT 24 VAC out Humidifier EAC 24 VAC out Electronic Air Cleaner Jumper 1 must be set to HEAT PUMP Jumper 2 must be set to O Jumper 3 must be set to ELEC Setup Step 24 NUMBER Of Compressor Stages must be set 1 24VAC Humidifier Optional 24VAC Electrontic Air Cleaner Optional Part Number ...

Page 12: ...essor X L Malfunction Light O Reversing Valve Energized in Cool W1 OUT First Stage Heat Y2 OUT Second Stage Compressor R 24 Volt Hot C 24 Volt Common 24VAC Humidifier Optional 24VAC Electrontic Air Cleaner Optional Jumper 1 must be set to HEAT PUMP Jumper 2 must be set to O Jumper 3 must be set to ELEC Move the HUM STAT jumper to YES if humidistat is to be used Refer to AH documentation for W1 and...

Page 13: ...ch Open on Humidity Rise HUM OUT 24 VAC out Humidifier EAC 24 VAC out Electronic Air Cleaner 24VAC Humidifier Optional 24VAC Electrontic Air Cleaner Optional Move the HUM STAT jumper to YES if humidistat is to be used Refer to AH documentation for W1 and W2 electric heat staging options Jumper 1 must be set to HEAT PUMP Jumper 2 must be set to O Jumper 3 must be set to ELEC Change FFuel jumper on ...

Page 14: ...sing Valve Energized in Cool Change FFuel jumper on the heat pump control to ON Part Numbers SAP Legacy 126768 031 09137 18395 031 01996 340512 031 09178 1 1 Part Numbers SAP Legacy 265904 031 09169 2 C 24 Volt Common R 24 Volt Hot Y1 Single Stage Compressor TWO STAGE VARIABLE SPEED FURNACE CONTROL G Fan TWO STAGE VARIABLE SPEED FURNACE W W1 First Stage Heat Y Y2 Second or Full Stage Compressor W2...

Page 15: ... jumper to YES if humidistat is to be used PV 8 9 ID MODELS F L 8 9 V YORKGUARD VI CONTROL G L 8 9 V YZE OD MODELS YZH H 5 H 8 C 24 Volt Common R 24 Volt Hot Y1 First Stage Compressor O Reversing Valve Energized in Cool L Malfunction Light Y2 Second Stage Compressor G Fan DN22H00124 DP22U70124 THERMOSTAT E W1 First Stage Aux Heat W2 Second Stage Aux Heat C 24 Volt Common Y First Stage Compressor O...

Page 16: ...gacy 159481 031 09157 2 COM 24 Volt Common R 24 Volt Hot W1 First Stage Aux Heat W2 Second Stage Aux Heat Y1 Single Stage Compressor Y Y2 Second or Full Stage Compressor O Reversing Valve Energized in Cool X L Malfunction Light HUM Dehumidification Open on Humidity Rise VARIABLE SPEED AIR HANDLER CONTROL G Fan Move the MODE jumper to HP Move the HUM STAT jumper to YES if humidistat is to be used V...

Page 17: ...stem Type must be set to 12 3 Heat 2 Heat Pump Thermostat Installer Setup 0190 Changeover Valve must be set to 0 O B terminal Energized in Cooling Thermostat Installer Setup 0200 Backup Heat Source must be set to 0 Heat Pump Backup Heat Source is Electric AUX Auxiliary Heat 1 24VAC Humidifier Optional Part Numbers SAP Legacy 159481 031 09157 2 COM 24 Volt Common R 24 Volt Hot W1 First Stage Aux He...

Page 18: ...d Stage Aux Heat DHM Dehumidistat HM Humidistat O Reversing Valve Energized in Cool C 24 Volt Common R 24 Volt Hot Y1 Single Stage Compressor VARIABLE SPEED MODULATING FURNACE CONTROL G Fan VARIABLE SPEED MODULATING FURNACE Y Y2 Second or Full Stage Compressor HUM Dehumidification Open on Humidity Rise W Modulating Heat Change FFuel jumper on the heat pump control to ON 1 Part Numbers SAP Legacy 1...

Page 19: ...8395 031 01996 340512 031 09178 1 PC 8 9 ID MODELS FC 8 9 C FL 8 9 C YZE OD MODELS YZH H 5 H 8 C 24 Volt Common R 24 Volt Hot Y1 First Stage Compressor O Reversing Valve Energized in Cool L Malfunction Light Y2 Second Stage Compressor G Fan DN22H00124 DP22U70124 THERMOSTAT E W1 First Stage Aux Heat W2 Second Stage Aux Heat C 24 Volt Common Y First Stage Compressor O B Reversing Valve L Malfunction...

Page 20: ... the OFF position Close the line power disconnect to the unit WITH POWER TO UNIT AND THERMOSTAT IN COOLING POSITION 1 In the cooling cycle discharge gas is pumped to the outdoor coil which is the condenser The indoor coil is the evaporator 2 If fan switch is in ON position a circuit is made through blower relay to provide continuous blower operation 3 With fan switch in AUTO position a circuit is ...

Page 21: ...ith Calgon Coilclean mix one part Coilclean to seven parts water Allow solu tion to remain on coil for 30 minutes before rinsing with clean water Solution should not be permitted to come in contact with painted surfaces 4 Refer to the furnace or air handler instructions for filter and blower motor maintenance 5 The indoor coil and drain pan should be inspected and cleaned reg ularly to prevent odo...

Page 22: ...835966 UIM A 0112 22 Johnson Controls Unitary Products SECTION XI WIRING DIAGRAM FIGURE 22 Wiring Diagram Single Stage ...

Page 23: ...835966 UIM A 0112 Johnson Controls Unitary Products 23 FIGURE 23 Wiring Diagram 2 Stage with PSC Outdoor Fan Motor ...

Page 24: ...d in U S A 835966 UIM A 0112 Copyright 2012 by Johnson Controls Inc All rights reserved Supersedes 573328 UIM B 0311 Johnson Controls Unitary Products 5005 York Drive Norman OK 73069 FIGURE 24 Wiring Diagram 2 Stage with ECM Outdoor Fan Motor ...

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