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Checklist
1. Put away tools and instruments. Clean up debris.
2. Verify that switches SW1−1 and SW1−6 are OFF and other
setup switches are set as desired. Verify that switches
SW1−7 and SW1−8 for the blower OFF DELAY are set as
desired per Table 19.
3. Verify that blower and control doors are properly installed.
4. Cycle test furnace with room thermostat.
5. Check operation of accessories per manufacturer's instruc-
tions.
6. Review Owner's Manual with owner.
7. Attach literature packet to furnace.
TWO-STAGE
ON/OFF Switch
1/2" NPT Inlet
1/8" NPT Inlet
Pressure Tap
Representative drawing only, some models may vary in appearance.
Fig. 59 − Gas Valve without Tower Pressure Ports
MANIFOLD PRESSURE TAP SET SCREW:
3/32" HEX HEAD ACCEPTS
INLET PRESSURE TAP
5/16" HOSE CONNECTION
SET SCREW: 3/32" HEX HEAD
ACCEPTS 5/16" HOSE
CONNECTION
1/2" NPT
INLET
ON/OFF SWITCH
Representative drawing only, some models may vary in appearance.
Fig. 60 − Gas Valve with Tower Pressure Ports
Regulator Seal Cap
Regulator Adjustment
Regulator Seal Cap under Cap
1/2" NPT Outlet
1/8" NPT Manifold
Pressure Tap
A11152
REGULATOR SEAL CAP
(REGULAR ADJ. UNDER CAP)
OUTP
1/2" NPT
OUTLET
A170117
Fig. 61 − Orifice Hole
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
R Y W G
10 TURNS
FROM UNIT 24-V
CONTROL TERMINALS
5.0 AMPS ON AMMETER
EXAMPLE:
10 TURNS AROUND JAWS
Fig. 62 − Amp. Draw Check with Ammeter
73
BURNER
ORIFICE
A93059
HOOK-AROUND
AMMETER
0.5 AMPS FOR THERMOSTAT
=
ANTICIPATOR SETTING
A96316
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