Mounting Your Furnace; Complete The Venting; Disconnect Wiring; Remove Burner And Controls - Williams 5508332 Owner's Manual

General Vent Installation (cont.)
TYPICAL VENT INSTALLATION
1
Vl_IT CAP "rOBE AMINo OF2 FT. HIGHER
THAN ANY pOINT _ 10 FT. OF _rr C_
HEADER PLA1E
2 E_DS
FLUE
COLLAR
QAS_£T
Lower vent pipe to the hold-down plate. Push the vent
pipe into the hold-down plate until it is completely
seated. (Hold-down cleats will engage the groove in the
vent pipe.)
Secure hold-down plate to vent pipe using two (2) screws.
Using plumbers tape to secure vent to the plate spacer,
nail through one (1) hole in each end of plate spacer, into
the wall and ceiling plate.
INSTALL FURNACE VENT (RECESSED MOUNT)
Lower first lengths of oval, double wall vent pipe through
the plate spacers to the hold-down plate.
Push the vent pipe into the hold-down plate until it is com-
pletely seated. (Hold-down cleat will engage the groove
in the vent pipe.)
Secure hold-down plate to vent pipe using two (2) screws.
COMPLETE THE VENTING
Refer to Fig. 18.
Install oval to round adapter. Complete the piping extend-
ing it through the roof. Use 4" round, double wall (Type
B) vent pipe, roof flashing, storm collar, and vent top as
shown. The vent cap must be at least 2 feet higher than
any point that is within 10 feet horizontally of the vent cap.
There must be at least 1 inch clearance between the vent
pipe and any combustible material.
IMPORTANT
Area above header within the stud space MUST be kept
clear of any attic insulation to allow the free circulation of
air around oval vent piping.
Mounting Your Furnace
To obtain adequate clearance for fastening furnace or to
install gas supply fittings, it may be necessary to remove
the burner and control assembly as follows:
Remove burner compartment door by pulling door top out
and up.
Locate the air discharge shield. It is secured across the
top of the burner control compartment. Remove two (2)
screws and shield and set aside.
DISCONNECT WIRING
MODELS 3508331; 3508332; 5508331; 5508332
Remove the screws holding the ignition control unit and
cover to the furnace casing.
Disconnect wires to free control module from its mount-
ing location. Mark or tag each wire removed for its exact
reconnection. See Fig, 19, page 16,
ALL OTHER MODELS
Disconnect two (2) 24 volt wires from the gas valve.
Disconnect two (2) wire connectors from junction block
midway on the thermocouple.
REMOVE BURNER AND CONTROLS
MODELS: 3508331; 3508332; 3508731; 3508732
Locate the burner and screws that secure it. Remove the
two (2) screws (one from each end). Lift one end of the
burner at a time until free. Remove burner and controls
from the compartment.
ALL OTHER MODELS
Locate the burner and hex nuts that secure it. Remove
the two (2) hex nuts (one from each end). Flip up the wire
hinges. Lift one end of burner at a time until free. Remove
burner and controls from the compartment.
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