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FIGURE 31 - WHITE RODGERS 36G54 GAS vALvE
FIGURE 32 - vALvE PRESSURE CHECK KIT
indicate a leak. ShuT oFF gAS AND FIx All lEAkS ImmEDIATEly!
8. Turn gas back on and test inlet pressure boss with leak detector.
9. If working on a natural gas system, contact the gas utility. They may insist on any service regulator adjust-
ments being made by their own staff
If problems were encountered with obtaining enough pressure on the manifold, first examine the gas piping
system to ensure that it is correctly sized. pipe sizing is specified in CAN/CSA-b-149.1 & 2, and in NFpA 54 /
ANSI Z223.1. be sure to check for restrictions, partially closed valves, etc.
13.3 seTTInG The ManIfolD Gas pRessURe
When the installation is completed to the
“Start-up & Setup”
stage, test the gas manifold pressure by following
these steps:
WHITE-RODGERS 36G54 TWO STAGE GAS vALvE
1. Turn off the gas and electrical supply before proceeding.
2. back outlet pressure test screw (outlet pressure boss, see fig.31) counterclockwise out one more turn
maximum, with a 3/32” Allen wrench. Attach a hose and calibrated u-tube or digital manometer to the
outlet pressure boss. hose should overlap boss 3/8”. The manometer must have a scale range of at least
0” to 15” of water column.
3. Turn on the gas supply and electrical power to the furnace and energize main solenoid by connecting R to
W1 on the integrated control board. Do not energize the hI solenoid.
4. Remove regulator cover screw from the low outlet pressure regulator adjust tower (fig.31) and turn the
plastic regulator adjustment screw clockwise to increase manifold pressure or counterclockwise to reduce
manifold pressure. Always adjust regulator according to original equipment manufacturer’s specifications
listed on the appliance rating plate. Replace regulator cover screw.
5. Energize main solenoid as well as the hI terminal by connecting R/W1 and W1/W2 on the integrated fur-
nace control. Remove regulator cover screw from the high outlet pressure regulator adjust tower (fig.31)
and turn the plastic regulator adjustment screw clockwise to increase manifold pressure or counterclock-
wise to reduce manifold pressure. manifold pressure should be set to 1.4” w.c low fire, 3.5” w.c high fire for
natural gas, 4.0” w.c low fire, 10.5” w.c. high fire for lp gas. Always adjust regulator according to original
equipment manufacturer’s specifications listed on the appliance rating plate.
When the correct pressure has been established, securely replace the regulator cover screw.
