33
Additional Propane Connection
Requirements
1. Have a licensed Propane gas dealer make all connections
at storage tank and check all connections from tank to fur-
nace.
2. If copper tubing is used, it
MUST
comply with limitation
set in National Fuel Gas Code or CGA codes.
3. Two--stage regulation of Propane gas is recommended.
Propane Conversion
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or
death.
A Propane conversion accessory kit is required when
operating the furnace with Propane gas.
!
WARNING
An accessory kit shall be used to convert to propane gas use, see
the furnace rating plate for the Propane conversion accessory kit
part number.
Supply Pressure
FIRE HAZARD
Failure to follow this warning could result in personal injury or
death.
Do NOT set input rating above that shown on rating plate.
!
WARNING
1. A
1
/
8
″
NPT plugged tapping, accessible for a test gauge
connection, must be installed immediately upstream of the
gas supply connection to the furnace.
2. Gas input to burners
MUST NOT
exceed the rated input
shown on rating plate.
3. Do
NOT
allow minimum gas supply pressure to vary
downward. Doing so will decrease input to furnace. Refer
to Table 6 and Table 7 for normal gas supply and manifold
pressures.
Manifold Gas Pressure Adjustment
SEE CHECKS AND ADJUSTMENTS, Manifold Gas
Pressure Adjustment
in this manual.
ON
OFF
ON
O
FF
O
N
O
F
F
Use elbows and 3
″
pipe nipple to connect valve to
piping when using right side gas pipe entry.
* Union may be installed inside the cabinet when necessary
because of clearances.
Drip Leg and Union, Union* should be outside the
cabinet. Manual shut- off valve MUST be upstream of
dripleg, union, and furnace.
Propane Low pres-
sure switch
REQUIRED.
Vent Pipe Grommet (Single Pipe)
3
″
pipe
nipple
Models may
have 1 or 2
pressure
switches
Manual shut- off
valve
Alternative
installation
Representative drawing only, some models may vary in appearance.
A07724
Fig. 34 -- Typical Gas Piping for Upflow
PG9Y
AA