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Installation
• This heater shall not be installed in a confined space or
unusually tight construction unless provisions are provided
for adequate combustion and ventilation air.
•
This heater must have fresh air for proper operation. If not,
poor fuel combustion could result. Read the following
instructions to insure proper fresh air for this and other fuel
burning appliances in your home.
Modern construction standards have resulted in homes that
are highly energy efficient and that allow little heat loss.
However, your home needs to breathe and all fuel burning
appliances need fresh air to function properly and safely.
Exhaust fans, clothes dryer, fireplaces and other fuel burning
appliances all use the air inside the building. If the available
fresh air supply is insufficient to meet the demands of these
appliances, problems can result.
Confined Space:
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 1000 BTU per hour (4.8 m3 per kw) of the
aggregate input rating of all appliances installed in that space.
Unconfined Space:
An unconfined space is defined in the same standards as a
space whose volume is not less than 50 cubic feet per 1000
BTU per hour (4.8 m3 per kw) of the aggregate input rating of
all appliances installed 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 unconfined space.
Example:
10,000 BTU Legacy heater should only be installed in a room
whose volume is more than 500 cubic feet. A room that is 8'
x 8' x 8' (512 cubic feet) would be acceptable for a Legacy
10,000 BTU/hour heater.
If an additional fuel fired appliance is installed in the same
room,
the input ra
ting of tha
t a
ppliance should be added to
tha
t of the Legac
y hea
ter to determine the minimum sized
room that should be serviced by both appliances.
Unusually tight construction is defined as construction
where:
a) Walls and ceilings exposed to the outside atmosphere have a
continuous wa
ter va
pour retarder with a rating of 1 perm (6 x
10-11 kg per pa-sec-m2) or less with openings gasketed or
sealed;
b)
Weather stripping has been added on openable windows and
doors; and
c) Caulking or sealants are applied to areas such as joints
around windo
w and door frames, between sole plates and
floors,
between wall-ceiling joints,
between wall panels,
a
t
penetrations for plumbing, electrical and gas lines and at
other openings.
PROVIDE ADEQUATE COMBUSTION
AND VENTILATION AIR
WARNING: If the area in which the heater may be operated is
smaller that that defined as an unconfined space or if the
building is of unusually tight construction, provide adequate
combustion and ventila
tion air by one of the methods
described in the National fuel Gas code, ANSI Z223.1 / NFPA
54,
Section 5.3 or applicable local codes.
Verify the type of gas supply to be used, either natural gas or
LP (Propane), and make sure the marking on the appliance
rating plate agrees with that of the supply gas. The rating plate
is located on the side of the heater, which indicates the type of
gas the heater is manufactured for.
WARNING: This appliance is only for use with the type of gas
indicated on the rating plate.
This appliance is not convertible for use with other gases.
Before installing the heater, make sure you have these items:
• Gas piping (check local codes)
• Test gauge connection
• Sealant (resistant to LP gases) - approved thread
compound
• Manual shut-off valve*
• Sediment trap - where required
• Ground joint union
• Tee joint and pipe wrench
*An installer supplied design-certified manual shut-off valve
with 1/8 NPT tap connection.
ITEMS NEEDED FOR
HEATER INSTALLATION
GAS TYPE