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See Figure17 (heating only) and Figure 18 (heating and cooling). 3. Connect low-voltage circuit to the wall thermostat pigtails. NOTE: Five-conductor thermostat cable is recommended for all installations to allow easy installation of an air conditioning system at a later time. Eighteen gauge thermostat wire is highly recommended. Smaller gauge thermostatwire may be usedonlyifthe guideline below is followed. THERMOSTAT WIRE THERMOSTAT LENGTH (FURNACE TO WlRE GAUGE THERMOSTAT) 0 -45 feet 22 0 -70 feet 20 Do not use thermostat wire smaller than 22 gauge. If thermo stat wire smaller than 18 gauge is used, pay particular attention that the connections between the different wire sizes are tight. Operational problems may be caused by loose connections or by the use of thermostat wire that is too small to carry the required load. Any such problems are the responsibility of the installer. A separate 115 _/A.C. supply circuit must be used for the furnaco. The circuit shouldbe protected by a 15 amp fuse or circuit breaker. J THIS SCREW DOES NOT NEED TO BE REMOVED IN ORDER TO REMOVE THE NOTE: FIELD WIRING COVER. Cover should (JUST LOOSEN). not be removed except when servicing the controls. a FIGURE 16 : Field Wiring Unitary Products Group 035-16328-002 Rev. C (0902) WALL THERMOSTAT Avoid locations where the thermostat could be subject to drafts from outside, or exposed to direct light from lamps, sun, fireplaces, etc., or affected by air from a duct register blowing directly on the thermostat. FURNACE The wall thermostat should be located 52 to 66 inches above CONTROL the floor. The preferred location is on an inside wall situated BOX in an area with good air circulation, and where the temperature will be reasonably representative of other living areas the thermostat is controlling. NOTE: In order to provide proper ventilation control when using DGPH model furnaces with Coleman Blend Air ventilation systems, it is required that a 4-wire wall thermostat and Blower Relay Kit 7900-7761 be installed, FIGUREt7 : Wiring for Heat Only Thermostat BLEND AIR CONTROL BOX E ; FURNACE CONTROL BOX WHITE Q WALL THERMOSTAT NOT FACTORYINSTALLED FIGURE 18 : Wiring for Heat-Cool Thermostat Unitary Products Group 035-16328-002 Rev. C (0902) WIRING DIAGRAMS MOTOR If" B!OWER °11 °11 GND. SCREW 03 02 LN -c 4 05 06 ORG ____ __Z TRANSFORMER 07 BLK 4 8 FAN SWITCH 24V SEC. 120V PRI. MANUAL RESET WHT LIMIT SWITCH I INE ORG (_ GRY _c_ w o 3 AMP FUSE AUTO RESET ORG LIMIT SWITCH E SYSTEM GAS NEU. ., WHT SWITCH CONTROL ..... . LI " BLK W R WALL THERMOSTAT "lit.... L _. TO EARTH GND. Q GND. SCREW FIGURE 19 : Wiring Diagram for DGPH056, DGPH070, DGPH077 NOTE: inordertoprovideproperventilationcontrolwhen using DGPH model furnaces with Coleman BlendAir ventilation systems, it is required that a 4,-v,'irewall thermostat and Blower Relay Kit 7900-7761 be installed. 14 Unitary Products Group 035-16328-002 Rev. C (0902) COMBUSTION BLOWER RELAY o2 GND. SCREW o3 ORG -o 4 o5 TRANSFORMER o6 LOAD o7 1O FAN WHT 24V SEC. SWITCH _8 120V PRI. WHT MANUAL RESET LIMIT SWITCI BLU BRN WHT [_ WHT i :{_]_ RED 3 AMP FUSE AUTO RESET LIMITSWITCH ORG I, W' i SYSTEM PRESSURE NEU, WHT SWITCH SWITCH _ _/ o 1 LI BLK WALL THERMOSTAT qt iv. @ GNO. TO EARTH GND. SCREW BLK _3 GAS CONTROL FIGURE 20 : Wiring Diagram for DGPH090 NOTE: In order to provide proper ventilationcontrolwhen using DGPH model furnaces with Coleman Blend Air ventilationsystems, it is required that a 4-wire wall thermostat and Blower Relay Kit 7900-7761 be installed, Unitary Products Group 035-16328-002 Rev. C (0902)...

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