Gas Pressure - Winchester WG SERIES Installation Instructions Manual

Winchester Gas Furnace

GAS PRESSURE

TYPE G AS INLET GA S
PRESSURE
Natural 7" W.C.
Propane 11" W.C.
GAS PIPE AND TUBING–MIN SIZES
MODEL TYPE
MGD OF
GAS
Natural
60
Propane
Natural
70
Propane
Natural
77
Propane
Natural
90
Propane
Winchester by Mortex Products Inc. / Fort Worth, TX 76106
PRESSURE
TO BURNER
3-1/2" W.C.
10" W.C.
LENGTH PIPE TUBING
SIZE SIZE
(FT.) (IN.) (IN. OD)
to 20 1/2
to 60 1/2
to 70 -
to 40 1/2
to 70 -
to 80 1/2
to 20 -
to 50 1/2
to 60 -
to 80 3/4
to 30 1/2
to 60 -
to 80 1/2
to 20 -
to 50 1/2
to 60 -
to 80 3/4
to 30 1/2
to 60 -
to 80 1/2
to 40 1/2
to 50 -
to 30 1/2
to 40 -
to 60 1/2
When converting gas control valve from or to
Propane gas, it will be necessary to change the
main burner ori ce to prevent an under red or
over red condition . The pressure regulator on the
gas control valve must also be converted. See label
on lower furnace compartment for full instructions.
If the gas input to the furnace is too high due to
excessive pressure, wrong size burner ori ce, no
ori ce, high altitude, etc., the burner ame will be
sooty especially with Propane gas. This type of
furnace operation can produce carbon monoxide,
which could result in unsafe operation, explosion,
and/or re and asphyxiation.
5/8
-
3/4
Operation — Once system gas piping has been checked
-
for leaks, operation the furnace using the lighting
5/8
instructions on the front furance panel, and:
-
1. Observe burner through viewport and make sure it
5/8
ignites. The color of the ame when operating on
-
natural gas will burn blue with yellow tips. On
3/4
Propane, a signi cantly yellow ame can be
expected. If ame is not the proper color call a
-
quali ed service technician for service.
-
5/8
2. Let furnace operate until blower cycles on. This takes
-
about 2 to 2 1/2 minutes.
5/8
3. Turn thermostat down.
-
3/4
4. Observe burner to make sure it has shut o .
-
5. Let furnace cool and blower cycle o .
-
5/8
-
3/4
3/4
Should overheating occur, or the gas supply fail
-
to shut off, shut off the manual gas valve to the
5/8
furnace and allow the indoor blower to run with
3/4
the gas turned off until the furnace cools down
and the blower shuts off before shutting off
Installation Instructions
electrical supply.
WG Installation Instructions
10