International comfort products C9MVX 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 connect valve to piping when using
right side gas pipe entry.
Propane low pressure switch.
* Union may be installed inside the cabinet when necessary because of clearances.
Typical Gas Piping for Downflow
Figure 32
Use elbows and 3, (76.2mm) pipe nipple to connect
valve to piping when using left side gas pipe entry.
Drip Leg and Union, Union* should be outside the cabinet.
Manual shut−off valve MUST be upstream of dripleg, union,
and furnace.
*Union may be installed inside the cabinet when necessary
because of clearances.
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)
pipe nipple
Representative drawing only, some models may vary in appearance.
Propane Low pressure
switch. Optional
Propane conversion.
Representative drawing only, some models may vary in appearance.
Specifications are subject to change without notice.
Vent Pipe Grommet
(Single Pipe)
Manual shut-off
valve
Manual shut-off
valve
Vent Pipe Grommet
(Single Pipe)
WARNING
!
FIRE, EXPLOSION 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.
Alternative
installation
25−25−45
Alternative
installation
440 01 2024 04