34
7. Install a manual shut--off valve external to furnace casing
and tighten all joints securely.
8. If local codes allow the use of flexible gas appliance con-
nectors, always use a new listed connector.
Do not use a connector which has previously serviced an-
other gas appliance.
9. Flexible corrugated metal gas connector may
NOT
be
used inside the furnace or be secured or supported by the
furnace or ductwork.
10. Properly size gas pipe to handle combined appliance load
or run gas pipe directly from gas meter or Propane gas reg-
ulator.
11. Install correct pipe size for run length and furnace rating.
12. Measure pipe length from gas meter or Propane second
stage regulator to determine gas pipe size.
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 7 for normal gas supply and manifold
pressures.
Manifold Gas Pressure Adjustment
SEE CHECKS AND ADJUSTMENTS, Manifold Gas
Pressure Adjustment
in this manual.
359AA
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