Kit Instructions
6
WARNING
TO PREVENT THE POSSIBILITY OF GAS LEAKS, THE PIPE JOINT
COMPOUND MUST BE RESISTANT TO L.P. GAS.
WARNING
INSTALL THE ATTENTION LABEL PROVIDED WITH THE CONVERSION
KIT TO THE GAS VALVE WHERE IT CAN BE READILY SEEN.
need to be set to 2 stg position to set and verify fi rst stage
heat. (See Installation Instructions supplied with the unit for
dip switch settings)
WARNING
NEVER USE AN OPEN FLAME TO CHECK FOR GAS LEAKS.
23. Using a soap and water solution, check for leaks around
the gas valve/manifold connection and the burner orifi ces.
Repair any leaks before continuing.
24. NOTE: Any other gas-fi red equipment should be ON
before any adjustments are made.
After the furnace has been in operation for 15 minutes,
adjust the gas supply pressure (not manifold pressure) to
obtain a range between 11” and 13” W.C. If the gas inlet
pressure falls outside of this range, then make necessary
L.P. service regulator(s) adjustments; check piping size,
etc., and /or consult with local L.P. provider.
25. With the furnace operating in its low-fi re (W1) condition,
the manifold pressure should be 6” W.C.± 0.30”. If neces-
sary, this pressure can be adjusted using the low regulator
adjustment screw. Turn clockwise to increase pressure
and counterclockwise to decrease manifold pressure.
26. Readjust the room thermostat to obtain a second stage call
for heat (W2). The manifold pressure for the W2 condition
should be 10” W.C. ± 0.30” W.C. If necessary, this pres-
sure can be adjusted using the gas valve high regulator
adjustment screw. Turn clockwise to increase pressure
and counterclockwise to decrease manifold pressure.
27. Using the room thermostat to cycle the unit, observe a
minimum of three (3) smooth ignition cycles.
28. Turn off gas and electrical supply to the furnace. Remove
the barbed manometer fi ttings from the 1/8” NPT holes in
the gas valve. Seal inlet and outlet plugs removed earlier
with pipe joint compound or pipe thread tape and reinstall.
29. Install the regulator cover screws provided with the con-
version kit.
30. IMPORTANT NOTE: Apply the conversion label (B14933-
151) provided with the conversion kit. This label must be
attached adjacent to the rating plate.
31. For hybrid models, control board switches may need to be