Cut Opening & Install Roof Jack; Installing In Snow Regions; Roof Jack On High-Pitch Roof; Installation In Snow Regions - Winchester WG SERIES Installation Instructions Manual

Winchester Gas Furnace
CUTTING ROOF JACK OPENING
A proper installation of the roof jack requires that
openings in roof and ceiling be on the same vertical
centerline as the furnace ue collar. See FIG. 1
Mark the center point on the ceiling and scribe a 4"
radius (8" diameter) around this mark. If furnace is in
place during this step, cover the furnace and ue
opening to prevent debris from entering ue.
INSTALLING ROOF JACK
The roof jack body should be secured to the furnace
before the roof ashing is secured to the roof.
1. Insert roof jack body into opening in the roof.
2. From above, center the roof jack body aligning with
the furnace collar.
3. From inside the home, pull down 4" D ue
pipe seating the pipe fully and rmly over the
furnace ue collar.
4. Next pull down the 7" D combustion air pipe
seating it over the mating furnace collar. Rotate the
combustion air pipe lining up to the screw hole on
the 7" collar.
5. Check and make sure the combustion air pipe is
fully seated . Then drive a # 10 sheet metal screw,
attaching pipe rmly to furnace collar.
6. Install optional ceiling trim ring, 90-TRM-RNG.
7. On the roof, seal under the roof jack ashing with
roo ng tar.
8. Drive nails or screws through the ashing onto the
roof surface about 1 – 11/2" apart. Apply Tar again
to ensure a leak tight joint.
9. Install roof jack crown and fasten to roof jack body
with three (3) screws (provided) using pre-punched
holes.
Winchester by Mortex Products Inc. / Fort Worth, TX 76106

INSTALLATION IN SNOW REGIONS

When the combustion air inlet to the roof jack is blocked
with snow, the furnace will not operate properly due to
the depleted combustion air supply.
Therefore, if the furnace will be located in regions where
snow accumulation on the roof exceeds 7" or in H.U.D.
Snow Load Zones, a roof jack extension – Part No.
90-OUTXT16-AL is recommended.
ROOF JACK ON HI-PITCH ROOF
To install the RJS (3/12) Series Roof Jack on roofs which
have a slope between 4.5/12 – 6/12, install a Part No.
90-RJS56 Roof Saddle , FIG. J. The combined assembly
of the RJS Roof Jack and Roof Saddle will conform to the
higher roof pitch. If roof pitch is greater than 6/12, eld
fabricate a suitable adapter, or consult with factory.
WG Installation Instructions
Installation Instructions
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