40
GAS SUPPLY AND PIPING
GAS SUPPLY
THIS FURNACE IS EQUIPPED AT
THE FACTORY FOR USE ON
NATURAL GAS ONLY.
CONVERSION TO LP GAS
REQUIRES A SPECIAL KIT
SUPPLIED BY THE DISTRIBUTOR
OR MANUFACTURER. MAILING
ADDRESS IS LISTED ON THE
W
ARRANTY. FAILURE TO USE
THE PROPER CONVERSION KIT
CAN CAUSE FIRE, CARBON
MONOXIDE POISONING,
EXPLOSION, PROPERTY
DAMAGE, PERSONAL INJURY OR
DEATH. See the conversion kit
index supplied with the furnace.
This index identifies the proper LP
Gas Conversion Kit required for
each particular furnace.
IMPORTANT: Any additions,
changes or conversions required for
the furnace to satisfactorily meet the
application should be made by a
qualified installer, service agency or
the gas supplier, using factory-
specified or approved parts.
IMPORTANT: Connect this furnace
only to gas supplied by a commercial
utility.
IMPORTANT: A U.L. recognized
fuel gas and CO detector(s) are
recommended in all applications,
and their installation should be in
accordance with the manufacturer’s
recommendations and/or local laws,
rules, regulations or customs.
GAS PIPING
Install the gas piping according to all
local codes and regulations of the
utility company.
If possible, run a separate gas supply
line directly from the meter to the
furnace. Consult the local gas
company for the location of the
manual main shut-off valve. The gas
line and manual gas valve must be
adequate in size to prevent undue
pressure drop and never smaller
than the pipe size to the com-
bination gas valve on the furnace.
Refer to Table 3 for the recom-
mended gas pipe size. See Figure 37
for typical gas pipe connections.
!
WARNING
FIGURE 37
GAS PIPING INSTALLATION
G
ROMMET
TOP VIEW OF GAS LINE AND VALVE
I
N OPT. POSITION
N
OTE: WHEN GAS LINE
IS IN OPT. POSITION,
SWAP LOCATION OF
G
ROMMET AND PLUG.
OPT. GAS LINE
P
OSITION
PLUG
(IN NORMAL
P
OSITION)
MANIFOLD
PRESSURE
T
AP
IGNITOR
M
ANIFOLD
GAS VALVE
U
NION
DRIP LEG
GROMMET
(
IN NORMAL
POSITION)
4
TO 5 FEET
ABOVE
FLOOR REQ’D
B
Y SOME
UTILITIES.
M
AIN GAS
VALVE
BURNERS
GROMMET
TOP VIEW OF GAS LINE AND VALVE
IN OPT. POSITION
MAIN GAS
V
ALVE
4 TO 5 FEET ABOVE
F
LOOR REQ’D BY
SOME UTILITIES.
GROMMET
(IN NORMAL
POSITION)
DRIP LEG
UNION
GAS VALVE
BURNERS
MANIFOLD
IGNITOR
MANIFOLD
PRESSURE
TAP
PLUG
(IN NORMAL
POSITION)
N
OTE: WHEN GAS
LINE IS IN OPT.
POSITION, SWAP
L
OCATION OF
GROMMET AND
PLUG.
DOWNFLOW
I328
U
PFLOW
MANUAL GAS VALVE
UNION
DRIP LEG
BURNERS
MANIFOLD
GAS VALVE
I524
IMPORTANT: DO NOT RUN A FLEXIBLE GAS CONNECTOR INSIDE THE
UNIT. Extend the 1/2" black pipe from the gas valve to the outside of the cabinet.
Connect any flexible gas connector from there to the gas piping.
HORIZONTAL
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