Air For Combustion And Ventilation - Desa Unvented (Vent-Free) Gas Compact Classic Hearth Fireplace VMH26NRB Owner's Operation And Installation Manual

7. Gently rotate hood to upright position.
Make sure hood tabs are behind louvers
and hood is resting on firebox top (see
Figure 3,).

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall
not be installed in a room or
space unless the required vol-
ume of indoor combustion air
is provided by the method de-
scribed in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code, or
applicable local codes. Read the
following instructions to insure
proper fresh air for this and
other fuel-burning appliances
in your home.
Today's homes are built more energy efficient
than ever. New materials, increased insula-
tion, and new construction methods help
reduce heat loss in homes. Home owners
weather strip and caulk around windows and
doors to keep the cold air out and the warm air
in. During heating months, home owners want
their homes as airtight as possible.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
Exhaust fans, fireplaces, clothes dryers, and
fuel burning appliances draw air from the house
to operate. You must provide adequate fresh
6
ASSEMBLy
Continued
8. Align screw holes on hood with screw
9. Insert screws as shown in Figure 3, page
Hood Tabs
Hood
Figure 3 - Assembling Hood
air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 6 through 8 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out-
b. weather stripping has been added on
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holes on firebox top.
6. Tighten screws firmly.
Louver
Sheet Metal
Screws
side atmosphere have a continuous
water vapor retarder with a rating of one
perm (6 x 10 kg per pa-sec-m
-11
with openings gasketed or sealed and
openable windows and doors and
Hood Tab
Baffle
Firebox Top
) or less
2
113110-01H