Connect Power Supply Wires; Wall Thermostat; Connect Thermostat Wires; Gas Piping - Winchester WG SERIES Installation Instructions Manual

Winchester Gas Furnace
To avoid electric shock, personel injury, or
death, turn o the power at the disconnect
or the main service panel before making
any electrical connections.
CONNECT POWER SUPPLY
1. Remove the furnace control panel cover.
2. Insert 115 V wiring through a strain relief bushing on
the left side of the furnace.
3. Connect the HOT wire to the black pigtail lead;
connect the NEUTRAL wire to the WHITE pigtail
lead. Secure the connections with suitable wire nuts
and wrap with electrical tape. Refer to Wiring
Diagram on Pg. 12 for connections.
4. Connect the GROUND wire to a grounding screw in
the control box.
5. Reinstall and secure the control box cover with
screws.

WALL THERMOSTAT

The location of the wall thermostat is important, as it
must sense the desired temperature of the entire
conditioned space. Choose a location 4–5 feet above
the oor, preferably on an inside wall in an area with
good air circulation. Stay away from lamps and air
registers and do not install behind a door. Choose a
location where the temerature will be reasonbly
representative of other living areas the thermostat is
controlling.

CONNECT THERMOSTAT WIRES

When installing a furnace with a cooling coil
compartment, use of a ve-connector thermostat cable is
recommended. This will allow easy installation of an air
conditioning system at a later date.
1. Insert 24V wires through the small plastic bushing on
the left side of the furnace.
2. Connect low voltage wires to the color coded low
voltage pigtails at the of the control panel.
3. Connect low voltage wires to the wall thermostat.
Winchester by Mortex Products Inc. / Fort Worth, TX 76106
NOTE: The use of 18-gauge wire is highly
recommended to carry the thermostat load. Use of
smaller conductors risks operational problems caused by
loose or broken conductors or wire that is too small to
carry the load. Any such problems are the responsibility
of the installer.
With conductors smaller than 18-gauge, observe the
following guidelines.
Maximum Thermostat wire
length (furnace to thermostat) Thermostat wire gauge
0–45 feet
0–70 feet

GAS PIPING

Supply piping must be sized in accordance with
recommendations found in National Fuel Gas Code
ANSI Z223.1/NFPA-54. In addition materials used in
manufactured homes must comply with requirements
contained in HUD Title 24, Section 3280.705 as well as
A119.2 for recreational vehicles.
See Chart in this manual for minimum sizes for NAT and
LP pipe and tubing serving the furnace only.
NOTE: The gas inlet on the gas control valve is 1/2-
14NPT. The gas line may be installed through trhe
bottom casing or on left or right side of furnace.
Take care when connecting the gas line to the
furnace gas valve. Use suitable wrenches to
support the gas valve when tighting ttings to
prevent mis-alignment of the attched burner ori ce.
Do not damage the gas valve as improper heating,
explosion, re or asphyxiation may result.
Do not use matches, lighters, candles or other open
ame to check for leaks. Use soap or water solution
or a leak detector.
Do not test the fuel system at more than 14" W.C.
pressure once furnace has been connected to the
gas line. Over pressure may void the warranty and
damage the valve which could cause an explosion,
re or asphyxiation.
WG Installation Instructions
Installation Instructions
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