Refer to the National Fuel Gas Code, ANSI Z223.1, and information
provided by the gas supplier to determine the proper orifice size.
A different pressure switch may be required at high altitude regard-
3
less of the BTU/ft
content of the fuel used. Contact your distributor
for a tabular listing of appropriate altitude ranges and correspond-
ing manufacturer’s pressure switch kits.
P
G
C
ROPANE
AS
ONVERSION
WARNING
P
,
OSSIBLE PROPERTY DAMAGE
PERSONAL INJURY OR DEATH MAY
. T
OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED
HE
APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER
. A
FURNACE OPERATION
LL CONVERSIONS MUST BE PERFORMED BY
.
A QUALIFIED INSTALLER OR SERVICE AGENCY
This unit is configured for natural gas.
The appropriate
manufacturer’s propane gas conversion kit, must be applied for
propane gas installations. Refer to the Section VIII, Propane Gas
/ High Altitude Installations section for details.
G
V
AS
ALVE
This unit is equipped with a 24 volt gas valve controlled during
furnace operation by the integrated control module. As shipped,
the valve is configured for natural gas. The valve is field convertible
for use with propane gas by replacing the regulator spring with a
propane gas spring from an appropriate manufacturer’s propane
gas conversion kit. Taps for measuring the gas supply pressure
and manifold pressure are provided on the valve.
The gas valve has a manual ON/OFF control located on the valve
itself. This control may be set only to the “ON” or “OFF” position.
Refer to the lighting instructions label or Section XIV, Startup Pro-
cedure & Adjustment for use of this control during start up and shut
down periods.
G
P
C
AS
IPING
ONNECTIONS
G
ENERAL
CAUTION
T
O AVOID POSSIBLE UNSATISFACTORY OPERATION OR EQUIPMENT
,
DAMAGE DUE TO UNDERFIRING OR EQUIPMENT
USE THE PROPER
/
SIZE OF NATURAL
PROPANE GAS PIPING NEEDED WHEN RUNNING
/
.
PIPE FROM THE METER
TANK TO THE FURNACE
When sizing a trunk line, be sure to include all appliances which
will operate simultaneously when sizing a trunk line.
The gas piping supplying the furnace must be properly sized based
on the gas flow required, specific gravity of the gas, and length of
the run. The gas line installation must comply with local codes, or
in their absence, with the latest edition of the National Fuel Gas
Code, ANSI Z223.1.