Installation; Locating Your Wall Furnace - Williams 1403622 Owner's Manual

Installation

Locating Wall Furnace
Consider the following points before attempting to install the
furnace.
All Models
1. This is a direct-vent wall furnace. It must be installed on an
outside wall for proper venting of flue gases. (Figure 1).
2. Wall furnace must be surface mounted on an outside wall
up to 24-inches thick when using an optional Vent
Extension Kit.
3. Check the clearances needed from the furnace and vent.
(Figure 1 and 2). You must place the furnace where you will
have no less than the clearances shown.
4. The outside vent must be at least 18-inches away from any
window or other building opening.
5. The furnace will not work if anything stops free entry of
fresh air into the vent, or free flow of flue gases from it. Be
sure the center of the vent cap is at least 12-inches above
ground level or shrubs. (Figure 1). Make sure shrubs are
kept trimmed. It must also be at least 18-inches from any
wall or other blockage and 30-inches below any overhang.
6. Place the furnace near the center of the space to be heated
for good air circulation. Do not put it behind a door or
draperies. Do not put it in a closet, alcove, hallway or other
confined space where the furnace could be isolated by
closing doors to the heated space.
7. Be sure that gas piping and electrical wiring (optional
blower only) can be brought to the furnace.
8. Select a location that will provide adequate accessibility
clearance for servicing and proper operation.
Interior Clearances (Figure 2).
14036 Series:
1. There must be at least 1-3/16 inches of space between the
floor (top of floor covering) and the bottom of cabinet.
2. The top of the furnace must be at least 18-inches from the
ceiling or other projecting overhang.
3. The side of the furnace must not be closer than 2-inches to
an adjacent wall.
22036 / 30036 Series:
1. There must be at least 5-1/2 inches of space between the
floor (top of floor covering) and the bottom of cabinet.
2. The top of the furnace must be at least 24-inches from the
ceiling or other projecting overhang.
3. The side of the furnace must not be closer than 2-inches to
an adjacent wall.
6
Choose a location for the thermostat about 5-feet above floor
on an inside wall. The thermostat wire supplied with your
furnace is 20-feet long, which should be enough to run up
through the attic so the thermostat can be a maximum of 16
feet from furnace measured in a straight line, or approximately
12-feet from the furnace if the wire is run under the floor. The
thermostat should be sensing an average room temperature;
avoid the following:
Hot Spots
Concealed pipes/ducts
Fireplaces
Registers
TV sets
Radios
Lamps
Direct sunlight
Kitchen
After selecting a location that meets the requirements, inspect
the wall, floor and outside areas. Make sure there are no pipes,
wiring, or anything else that would interfere with furnace, vent
or thermostat installation. If required, move or pick a new
location.
FIGURE 1
Cold Spots Dead Spots
Concealed pipes/ducts Behind doors
Stairwells (drafts) Corners/alcoves
Doors (drafts)
Unheated rooms on
other side of the wall