Air For Combustion And Ventilation - Cedar Ridge MTF4TPU Manual Del Usuario

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and
ventilation air. 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 insulation
and new construction methods help reduce
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:
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 outside
atmosphere have a continuous water
vapor retarder with a rating of one perm
(6 x 10 kg per pa-sec-m
-11
openings gasketed or sealed and
b. weather stripping has been added on
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 defines a confined space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (4.8 m per kw) of the aggregate
3
input rating of all appliances installed in that
space and an unconfined space as a space
whose volume is not less than 50 cubic feet
per 1,000 Btu/hr (4.8 m
gregate input rating of all appliances installed
8
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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
air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 8 through 10 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
c. caulking or sealants are applied to areas
If your home meets all of these three criteria,
you must provide additional fresh air. See
Ventilation Air From Outdoors, page 10.
) or less with If your home does not meet all of the three
2
criteria above, proceed to Determining Fresh-
Air Flow For Heater Location, page 9.
Confined and Unconfined Space
in that space. Rooms communicating directly
with the space in which the appliances are
installed*, through openings not furnished
with doors, are considered a part of the un-
confined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
per kw) of the ag-
3
grills between them.
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openable windows and doors and
such as joints around window and door
frames, between sole plates and floors,
between wall-ceiling joints, between wall
panels, at penetrations for plumbing, elec-
trical and gas lines and at other openings.
200032-01A