Combustion And Ventilation Air - Williams 3508232 Owner's Manual

Installing Your Furnace
FIGURE 3 Minimum Clearances
Combustion & Ventilation Air
WARNING: Danger of property damage, bodily
injury or loss of life. The furnace and any other fuel-
burning appliances must be provided with enough
fresh air for proper combustion and ventilation of
flue gases. Most homes will require that outside air
be supplied into the heated area.
The high cost of energy for home heating has brought about new
materials and methods used to construct or remodel most current
homes. The improved construction and additional insulation has
reduced the heat loss and made these homes much tighter
around windows and doors so that infiltrated air is minimal. This
creates a problem to supply combustion and ventilation air for
gas-fired or other fuel burning appliances. Any use of appliances
that pull air out of the house (clothes dryers, exhaust fans,
fireplaces, etc.) increases this problem and appliances could be
starving for air.
In addition, these energy measures mean that your home will
retain more water vapor or a higher relative humidity.
8
With standard furnace discharge outlet, do not install closer than 4
inches to intersecting wall.
Choose a location for the thermostat about 5 feet above the 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 the 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 average room temperature, avoid the following:
HOT SPOTS:
Concealed pipes or ducts
Fireplaces
Registers
TV sets
Radios
Lamps
Direct sunlight
Kitchen
After picking a location that meets the requirements, check the
walls, attic and roof to make sure there are no obstructions such
as pipes, electric wiring, etc., which could interfere with the
installation of the furnace or vent pipe. If required, move them or
pick a new location.
WARNING: Danger of property damage, bodily
injury or loss of life. Do not install furnace in any
area where oxygen is in use.
High humidity, especially during cold weather, may be damaging
to buildings because condensation forms on windows and inside
walls.
The combination of a tight energy efficient home with the use of
exhaust fans, fireplaces, clothes dryers, and gas appliances result
in more and more air being drawn from the house until fresh air
may be sucked back into the house down a furnace flue or
fireplace chimney. Carbon monoxide can be the result. Carbon
monoxide (CO) is a colorless, odorless gas produced when fuel is
not burned completely or when the flame does not receive
sufficient oxygen. Automobiles, charcoal, wood fires and
improperly vented or air-starved coal, oil and gas furnaces or
other appliances can produce carbon monoxide.
Be aware of these air-starvation signals:
1. Headaches, nausea, dizziness.
2. Excessive humidity shown by heavily frosted windows or a
moist "clammy" sensation.
3. Fireplace smoke fills the room or will not draw.
4. Furnace flue backs up.
COLDSPOTS:
Concealed pipes or ducts
Stairwells – drafts
Doors – drafts
Unheated rooms on
other side of wall
DEAD SPOTS
Behind doors
Corners, and alcoves