Installing Your Furnace - Williams 4505622A Owner's Manual

INSTALLING YOUR FURNACE

Locating the Furnace
Consider the following points before attempting to install
the furnace:
1. To achieve the best results from this furnace, it must be
located in an area that will provide good circulation of air to
adjacent areas that need to be heated.
2. Warm air will rise from the furnace and travel to other areas
only through open doorways, and that air must return to
the furnace to be reheated.
3. In small homes, one unit centrally located may be sufficient
to meet the heating requirements, but it is impractical to
attempt to use this furnace where heat must travel
through more than one doorway before reaching an area
where heat is desired. A typical installation of a single unit
in a small home is shown by Figure 2.
4. In larger homes, it may be necessary to use two or more
units to provide sufficient heat distribution. It is often better
to use two small furnaces rather than one large one.
5. If there is a difference in the floor level between two rooms
to be heated, the furnace should be located in a room with
the lower floor.
6. The flow of heat to various areas within the home can be
effectively regulated by the opening and closing of doors.
CLEARANCES
1. Minimum clearance between the floor furnace and
adjacent walls - 6".
2. Minimum clearance between furnace and doors, draperies
or other combustible materials within the home -12".
3. Minimum space required along two sides of the furnace to
allow persons to walk around the furnace - 15".
The thermostat (optional) should be located on an interior
wall far enough away from the furnace to prevent it from
being heated directly by the furnace. Select a location in
the area most frequently used or best situated to control
the temperature of the entire house. Avoid locations where
the thermostat might be subjected to drafts from windows,
doors, stairways, etc., or from other devices such as cooking
ranges, fireplaces, television, etc. Place the thermostat about
five (5) feet above the floor. Do not select a location that will
require more than 25 feet of wire between the furnace and
the thermostat. Do not install the thermostat in an area
which can be isolated from the furnace by a door.
LOCATION NOTE: Replacement floor furnaces of the
same or lesser Btu/hr. input rating may be installed in
the same location as the replaced furnace when such
replacement does not create an unsafe condition.
After you have selected a location that will provide the
necessary clearances and air circulation, check beneath the
house to be sure that the clearances between the furnace
and the ground, as specified by Page 6, Figure 1, can be
obtained. It is permissable to dig a shallow pit, as shown in
Figure 1, but a pipe or trench should be provided to drain
away any water that may seep into the pit. If the depth of
the pit must exceed 12", or if water is likely, a watertight pit of
galvanized steel, copper, concrete or other suitable material
should be constructed and anchored into place to prevent
it from floating. The sides of this pan should extend four
inches above the ground. The clearances between the upper
rim of the pan and the furnace should be no less than those
specified in Figure 1.
The width, length and depth of each furnace model is shown
in Page 10, Figure 6.
FIGURE 2 - CENTRALLY LOCATED FURNACE
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FLOOR FURNACES