Air For Conbustion & Ventilation; Air For Combustion And Ventilation - Procom QN300TYLA Owner's Operation And Installation Manual

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.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from
National Fuel Gas Code , NFPA 54/
ANSZ 223.1,Section 5.3 , Air for
Combustion and Ventilation .
All spaces in homes fall into one of
the three following
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 5
will help you classify your space and
provide adequate ventilation.
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways
or ventilation grills between the rooms.
1. Determine the volume of the space (length
× ×
Length Width Height=
Example: Space size 20ft. (length)
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these
rooms to the total volume of the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
(volume of space)
Example: 2560 cu. ft. (volume of space)

AIR FOR COMBUSTION AND VENTILATION

Confined and Unconfined Space
The National Fuel Gas Code, ANS
Z223.1 defines a confined space as a
space whose volume is less than 50
cubic feet per 1,000 Btu per hour
3
8 m per kw) of the aggregate
put rating of all appliances installed in
that space and an unconfining space
as a space whose volume is not
less than 50 cubic feet per 1,000 Btu
per hour (4.8 m
gate input rating of all appliances in-
stalled in that space. Rooms
municating directly with the space in
which the appliances are installed*,
through openings not furnished with
doors, are considered a part of the
ventilation
unconfined space.
This heater shall not be installed in
a confined space or unusually tight
construction unless provisions are
provided for adequate combustion
and ventilation air.
* Adjoining rooms are communicat-
ing only if there are doorless pas-
sageways or ventilation grills be-
tween them.
cu.ft. (volume of space)
×
16ft.(width)
÷
50 cu. ft.=(Maximum Btu/Hr the space can support)
÷
50 cu.ft.=51.2 or 51,200(maximum Btu/Hr the space can support)
3 per kw) of the aggre-
× ×
width height).
×
8ft. (ceiling height)=2560cu. ft. (volume of space)
4
Unusually Tight Construction
The air that leaks around doors and
windows may provide enough fresh
air for combustion and ventilation.
(4. However, in buildings of unusually
in- 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
continuous water vapor retarder
com- with a rating of one perm (6
p e r p a - s e c - m
openings gasketed or sealed and
b) weather stripping has been added
on openable windows and doors
and
c) caulking or sealants are applied to
areas such as joints around
window and door frames, between
sole plates and floors, between
wall-ceiling joints, between wall
panels, at penetrations for plumbing,
electrical, and gas lines, and at
other openings.
If your home meets all of the three
criteria above, you must provide
additional fresh air. See Ventilation Air
From Outdoors .
If your home does not meet all of the
three criteria above, proceed to
Determining Fresh-Air Flow For
Heater Location.
have a
×
-11
10 kg
2
) o r l e s s w i t h