International comfort products N9MP1 Installation Instructions Manual page 34

Figure 31 Typical Gas Piping for Upflow
Drip Leg and Union, Union* should be outside the
cabinet. Manual shut-off valve MUST be upstream of
dripleg, union, and furnace.
Use elbows and 3, (76.2mm)pipe nipple to con­
nect valve to piping when using right side gas
pipe entry.
O F F
Propane Low pres­
sure switch
REQUIRED.
* Union may be installed inside the cabinet when necessary
because of clearances.
Representative drawing only, some models may vary in appearance.
Figure 32 Typical Gas Piping for Downflow
Use elbows and 3, (76.2mm) pipe nipple to con-
nect valve to piping when using left side gas
pipe entry.
*Union may be installed inside the cabinet when necessary
because of clearances.
Representative drawing only, some models may vary in appearance.
Additional Propane Connection Requirements
1. Have a licensed Propane gas dealer make all connections
at storage tank and check all connections from tank to
furnace.
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
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.
34
3, (76.2mm)
O N
pipe
nipple
Propane Low pres­
sure switch
REQUIRED.
Drip Leg and Union, Union* should be outside
the cabinet. Manual shut−off valve MUST be
upstream of dripleg, union, and furnace.
Specifications are subject to change without notice
Vent Pipe Grommet (Single Pipe)
Manual shut-off
valve
O N
O F F
O N
O F F
Manual shut-off
valve
Gas Pipe Grommet
(Single Pipe)
WARNING
!
FIRE, EXPLOSION, UNIT DAMAGE HAZARD
Failure to follow this warning could result in death,
property damage and/or personal injury.
A Propane conversion accessory kit is required
when operating the furnace with Propane gas.
Models may
have 1 or 2
pressure
switches
25−24−86
Models may
have 1 or 2
pressure
switches
O N
O F F
25−25−46a
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