Carrier KGANP3001ALL, Руководство по установке, Страница: 17 / 32

9. Turn gas supply manual shutoff valve to OFF position.
10. Turn off furnace power supply.
11. Remove manometer.
12. Apply pipe dope sparingly to end of inlet gas pipe plug and install in unused end of 1/8
″
tee. Use a small back-up wrench on tee when
tightening gas inlet pipe plug. (See Fig. 7A.)
PROCEDURE 5—MODIFY PRESSURE SWITCH WIRING
A. Single Stage Pressure Switch Wiring
1. Disconnect yellow wire from the N.O. contact of the pressure switch PRS on the inducer housing and connect it to the N.O. terminal on
the low gas pressure switch, LGPS.
2. Connect the insulated straight terminal of the 16-in. yellow wire (provided in kit) to the C terminal on the low gas pressure switch, LGPS.
3. Connect insulated flag terminal of 16-in. yellow wire to the N.O. terminal to pressure switch PRS located on inducer housing.
4. Route yellow wires along wire harness.
5. Secure with wire tie provided in kit. Go to Procedure 6.
B. Two-Stage and Variable Speed Pressure Switch Wiring
1. Disconnect yellow wire from low-heat pressure switch LPS on inducer housing. Add 3/16-in. splice connector to this wire.
2. Connect uninsulated terminal of 6-in. yellow wire (provided in kit) to splice connector. Connect other end to C terminal on low gas pressure
switch LGPS.
3. Connect insulated terminal of 14-in. yellow wire (provided in kit) to NO terminal on low gas pressure switch LGPS. Connect other end to
pressure switch LPS located on inducer housing.
4. Route yellow wires along wire harness. Secure with wire tie provided in kit. Go to Procedure 6.
PROCEDURE 6—CHECK FURNACE OPERATION AND MAKE NECESSARY ADJUSTMENTS
1. Be sure main gas and electric supplies to furnace are off.
2. Remove 1/8-in. pipe plug from manifold pressure tap on downstream side of gas valve. (Fig. 16A or 16B.)
3. Attach manometer to manifold pressure tap on gas valve. (See Fig. 16A.)
4. Turn gas supply manual shutoff valve to ON position.
5. Turn furnace gas valve switch to ON position.
6. Check all threaded pipe connections for gas leaks.
7. Turn on furnace power supply.
WARNING: FIRE, EXPLOSION, INJURY OR DEATH HAZARD
Failure to follow this warning could result in fire, explosion, personal injury, or death.
NEVER use matches, candles, flame, or other sources of ignition to check for gas leakage. Use a soap-and-water solution to check
for leaks.
PROCEDURE 7—SET GAS INPUT RATE
The gas-input rate for propane is the same as for natural gas. See furnace rating plate for input rate. The input rate for propane is determined by
manifold pressure and orifice size. Refer to the appropriate Conversion Kit Rating Plate.
Gas input rate on furnace rating plate is for installations at altitudes up to 2000 ft. In the U.S.A., the input rating for altitudes above 2000 ft must
be reduced by 4 percent for each 1000 ft above sea level.
In Canada, the input rating must be derated by 10 percent for altitudes of 2000 ft to 4500 ft above sea level.
The Conversion Kit Rating Plate accounts for the high altitude derate.
A. Single Stage Furnaces
1. Jumper R and W thermostat connections to call for heat.
2. Check manifold orifices for gas leaks when main burners ignite.
3. Adjust gas manifold pressure. Turn adjusting screw counterclockwise (out) to decrease manifold pressure or clockwise (in) to increase
manifold pressure. Refer to Conversion Kit Rating Plate #327697-206 (Single-Stage).
NOTE: Gas valve regulator seal cap MUST be in place when checking input rate.
4. When correct input is obtained, main burner flame should be clear blue, almost transparent (See Fig. 28.) Be sure regulator seal cap is in
place when finished.
5. Remove jumper across R and W thermostat connections to terminate call for heat.
6. Turn furnace gas valve control switch or control knob to OFF position.
7. Turn off furnace power supply.
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