Installation guide

previously serviced another gas appliance. Always use a LEAK CHECK/PRESSURE TESTING OF GAS SUPPLY
new listed connector. PIPING
FIRE OR EXPLOSION HAZARD
Failure to do so could result in personal injury, death
and/or property damage.
Gas connector MUSTbe properly installedand can NOT
be used inside thefurnace.
4. Use pipe joint compound on external (male) threads
ONLY. Joint compound MUST be resistant to any
chemical action of propane (LP) gases. Do NOT put
pipe compound on last 2 threads of pipe.
5. Use ground joint unions and install a drip leg no less
than 3 inches (76 mm) long to trap dirt and moisture
before it can enter gas valve.
UNIT OPERATION AND COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in misaligned
burners, flame rollout and or unit damage.
Overtightening assembly may cause damage to the gas
valve and/or wirin_land may misali_lnthe burners.
6. Use a wrench on gas valve when making connections
to prevent gas valve from turning. Do NOT use a pipe
wrench on the gas valve body.
7. Provide a t/8 inch (3mm) National Pipe Thread (NPT)
plug for test gauge connection immediately upstream of
the gas supply connection to the furnace if none is
supplied with the gas valve of unit.
8. Install a manual shutoff valve and tighten all joints
securely.
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings could result in per-
sonal injury, death or property damage.
Never test for gas leaks with an open flame. Use a com-
mercially available soap solution made specifically for
the detection of leaks to check all connections. A fire or
explosion may result causing property damage, person-
al injury or loss of life.
The unit and its equipment shutoff valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of .5 psi (3.5kPa).
The unit must be isolated from the gas supply piping system
by closing the equipment shut off valve during any pressure
testing of the gas supply piping system at test pressures
equal to or less than .5 psi (3.5 kPa).
ORIFICES
Orifice Sizes
Orifice sizes MUST be matched to the heating value of the
gas (see TABLE 1 & 2). Check with your gas supplier and
the National Fuel Gas Code ANSI Z223.1.
NOTE: A Propane (LP) Conversion Kit MUST be used for
conversion to propane (LP) gas.
NOTE: For elevations above 2000 feet (610 meters), the
Btu input rating MUST be reduced by 4% for each 1000 feet
(305 meters) above sea level, unless the gas supplier's
Btu/ft3 content has already been adjusted for altitude.
Check Table 1 & 2 for the proper orifice sizes.
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