NORDYNEalso offers water heaters,fire-
placesandventilatingsystemsspecificallyde-
signedformanufacturedhousingapplications.
Ask your manufacturedhomeretailer,your
heatingandcoolingcontractor,or your dis-
tributorfor moreinformation.Writedirectlyto
the factory8000PhoenixParkway,O'Fallon,
MO,63368)ifyouareunabletolocatea source
forNORDYNEmanufacturedhousingproducts
inyourarea.
1. Furnace Location
The furnace area and the vicinity of any other
gas appliance must be kept clear and free of
combustible materials, gasoline, and other flam-
mable vapors and liquids. Do not store or use
flammable items such as paint, varnish, or
strippers in the vicinity of the furnace.
Do not use the furnace closet or area next to
the furnace as a storage area. This area must
be kept clear, clean, and free of lint. The
furnace must also be kept clear of loose or
exposed insulation materials. Examine the fur-
nace area when the furnace is installed or
when insulation is added. Some insulation
materials may be combustible.
Do not use this furnace if any part has been
under water. Immediately call a qualified ser-
vice technician to inspect the furnace and to
replace any part of the control system and any
gas control which has been under water.
Familiarize yourself with the controls that shut
off the gas and electrical power to the furnace.
If the furnace is to be shut down for an extended
period of time, turn off both the gas and electrical
power. For your safety always turn off both the
gas and electrical power before performing
service or maintenance on the furnace.
2. Combustion Air Supply
A furnace needs an adequate supply of com-
bustion and ventilation air for proper and safe
operation. Follow the installation instructions
included with the furnace to properly vent air to
the combustion air inlet and exhaust the prod-
ucts of combustion to the outside from the
exhaust vent.
If the furnace is operated with a restricted com-
bustion air supply, the pressure switch will
open, turning off the gas supply to the burners.
(See Figure 1). DO NOT install a jumper wire
across this switch to defeat its function. If this
switch must be replaced, use only authorized
replacement parts from your authorized dis-
tributor.
If the furnace is operated with inadequate
combustion air supply, due to sooting of the
heat exchanger, or partial blockage of the vent
or air intake pipe, the flame roll-out control
switch located above the burners may open,
turning off the gas supply to the burners. The
flame roll-out control is a manually resettable
device (See Figure 1). If the flame roll-out
control opens again after once reset, DO NOT
install a jumper wire across this switch to
defeat its function. DO NOT reset the control
without identifying and correcting the fault con-
dition which caused the control to trip. If this
switch must be replaced, use only authorized
replacement parts from your authorized dis-
tributor.
Air openings in warm air registers, and return air
grilles must not be restricted.
CAUTION:
Combustion air must not be drawn
from occupied spaces.
To maximize heat exchanger life, the combus-
tion air must be free of chemicals which form
corrosive acidic compounds in the combustion
gases. Some examples of these chemicals are
chlorine, fluorine, and sulphur. Some common
sources of these chemicals are detergents,
bleaches, aerosol sprays, cleaning solvents, and
a wide variety of commercial and household
products.
3. Return Air Supply
For M3 models, the return air opening is located
at the front of the furnace. The floor or platform
on which the furnace is mounted must provide
sound physical support of the furnace with no
gaps, cracks, or sagging between the furnace
and floor or platform. The circulating airductwork
must not be connected to any other heat pro-
ducing device such as a fireplace insert, stove,
etc. Doing so may result in fire, explosion,
personal injury, carbon monoxide poisoning, or
property damage.
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