background image

8

24 VAC HOT

R

C

W2

Y

G

R

C

RVS COOLING

C

W2

HP THERMOSTAT

 TYPICAL

FAN COIL

HEAT 

PUMP

G

O

E

W2

E

W3

R

Y

24 VAC COM

HEAT STAGE 2

COOL/HEAT

STAGE 1

INDOOR FAN

EMERGENCY

HEAT

O

*
*
*

 IF AVAILABLE

*

LEGEND

24-V FACTORY WIRING

24-V FIELD WIRING

FIELD SPLICE CONNECTION

OUTDOOR THERMOSTAT

EMERGENCY HEAT RELAY

SUPPLEMENTAL HEAT RELAY

  

SHR

  

EHR

  

ODT

A02325 / A97413

Fig. 9

---

Generic Wiring Diagrams

(See Thermostat Installation Instructions for specific unit combinations)

OF2

HK32EA003

O

F1

ON

QUIET

SHIFT

120

30

60

60

30

90

INTER

V

AL  

TIMER

OFF

P3

DFT

O   R   

W

2

   

Y   C

T2 C  C  O

DFT

T1

Y

P1

J1

SPEEDUP

Speedup
Pins

Defrost interval
DIP switches

Quiet
Shift

A05378

Fig. 10

---

Defrost Control

25H

C

R

Summary of Contents for COMFORT SERIES 25HCR

Page 1: ...COMMENDATIONS 2 INSTALLATION 3 10 Step 1 Check Equipment Jobsite 3 Step 2 Install on Solid Pad 3 Step 3 Clearance Requirements 3 Step 4 Operating Ambient 3 Step 5 Install TXV 3 4 Step 6 Check Defrost...

Page 2: ...h a suitable warning label INSTALLATION RECOMMENDATIONS NOTE In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away from wi...

Page 3: ...in above roof surface STEP 4 Operating Ambient The minimum outdoor operating ambient in cooling mode is 55 F and the maximum outdoor operating ambient in cooling mode is 125 F The maximum outdoor ope...

Page 4: ...r connection to indoor coil Adapter has a 1 4 in male connector for attaching equalizer tube 14 Connect equalizer tube of TXV to 1 4 in equalizer fitting on vapor line adapter Use backup wrench to pre...

Page 5: ...nnect refrigerant tubing to fittings on outdoor unit vapor and liquid service valves Service valves are closed from factory and ready for brazing After wrapping service valve with a wet cloth tubing s...

Page 6: ...r A05227 Fig 7 Liquid Line Filter Drier STEP 8 Make Electrical Connections WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not supply power t...

Page 7: ...ries Refer to the individual instructions packaged with kits or accessories when installing STEP 11 Start Up CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury...

Page 8: ...G FIELD SPLICE CONNECTION OUTDOOR THERMOSTAT EMERGENCY HEAT RELAY SUPPLEMENTAL HEAT RELAY SHR EHR ODT A02325 A97413 Fig 9 Generic Wiring Diagrams See Thermostat Installation Instructions for specific...

Page 9: ...he start of defrost cycle and restarting of heating cycle It is selected by placing DIP switch 3 on defrost board see Fig 12 in the ON position When Quiet Shift switch is placed in ON position and a d...

Page 10: ...t match on chart system refrigerant charge may not be correct Do not use chart to adjust refrigerant charge STEP 13 Final Checks IMPORTANT Before leaving job be sure to do the following 1 Ensure that...

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