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5. Turn furnace gas valve switch to ON position.
6. Check all threaded pipe connections for gas leaks.
7. Turn on furnace power supply.
GAS INPUT RATE INFORMATION
See furnace rating plate for input rate. The input rate for natural
gas is determined by manifold pressure and orifice size.
Determine natural gas orifice size and manifold pressure for
correct input at installed altitude by using Table 5 or Table 6.
All models in all positions except Low NOx models in downflow
and horizontal positions use Table 5 (22,000 Btuh per burner).
Low NOx models in downflow or horizontal positions must use
Table 6 (21,000 Btuh per burner). See input listed on rating plate.
1. Obtain yearly heat−value average (at installed altitude) for
local gas supply.
2. Obtain yearly specific−gravity average for local gas supply.
3. Find installation altitude in Table 5 or Table 6.
For Canada altitudes of 2000 to 4500 ft., use U.S.A. Altitudes of
2001 to 3000 ft. in Table 5 or Table 6.
4. Find closest natural gas heat value and specific gravity in
Table 5 or Table 6.
5. Follow heat−value line and specific−gravity line to point of
intersection to find orifice size and manifold pressure
setting.
The gas valve must be set for Low Heat first and then set for
High heat on two−stage and variable−speed furnaces. Furnace
gas input rate on rating plate is for installations at altitudes up to
2000 ft. (610 M).
In the U.S.A.; the input rating for altitudes above 2000 ft. (610M)
must be reduced by 4 percent for each 1000 ft. (305 M) above
sea level.
In Canada; the input rating must be derated by 5 percent for
altitudes of 2000 ft. (610 M) to 4500 ft. (1372 M) above sea level.
The Conversion Kit Rating Plate accounts for high altitude
derate.
SET GAS INPUT RATE
1. Make sure the gas supply is turned off to the furnace and
at the electric switch on the gas valve.
2. Remove the 1/8 in. (3 mm) NPT plug from the outlet
pressure tap on the gas valve.
3. Connect a manometer to the outlet pressure tap on gas
valve.
4. Turn on furnace power supply.
5. Turn gas supply manual shutoff valve to ON position.
6. Turn furnace gas valve switch to ON position.
7. Jumper R and W thermostat connections to call for heat.
(See Figure 13)
8. Check manifold orifices for gas leaks when main burners
ignite.
Figure 26
Conversion Responsibility Label
Copyright 2017 CAC / BDP D 7310 W. Morris St. D Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9. Adjust gas manifold pressure. Refer to Table 5 or Table 6.
10. Remove cap that conceals the adjustment screw for the
gas valve regulator.
11. Turn adjusting screw counterclockwise (outwards) to
decrease manifold pressure or clockwise (inwards) to
increase manifold pressure.
Gas valve regulator seal cap MUST be in place when checking
input rate.
12. When correct input is obtained,main burner flame should
be clear blue, almost transparent. Be sure regulator seal
cap is in place when finished. See Figure 11.
13. Remove jumper across R and W thermostat connections
to terminate call for heat.
14. Turn furnace gas valve control switch or control knob to
OFF position.
15. Turn off furnace power supply.
16. Remove manometer and replace manifold pressure tap
plug.
Use Propane gas resistant pipe dope to prevent gas leaks. DO
NOT use Teflon tape.
17. Turn furnace gas valve control switch or control knob to
ON position.
18. Turn on furnace power supply. Set room thermostat to call
for heat.
19. Check manifold pressure tap plug for gas leaks when main
burners ignite.
CHECKOUT
1. Observe unit operation through two complete heating
cycles.
2. See Sequence of Operation in furnace Installation, Start−
up and Operating Instructions.
3. Set room thermostat to desired temperature.
After making the required manifold pressure adjustments, check
and adjust the furnace temperature rise per the furnace
installation instructions.
LABEL APPLICATION
1. Fill in Conversion Responsibility Label 339851−205 and
apply over Propane Conversion Responsibility Label.
Date, name, and address of organization making this
conversion are required. See Figure 26.
2. Apply Conversion Rating Plate Label 339851−204 over
Propane Conversion Rating Plate Label. See Figure 19.
3. Apply Gas Control Conversion Label over Propane Label
339851−202 to gas valve. (DO NOT use 339851−203,
which is similar.)
Edition Date: 08/17
20
Catalog No: AG-KGBPN1SP-04
Replaces: AG−KGBPN1SP−03
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