Rheem RGRA SERIES, Installation Instructions Manual

Page: 31 / 64

GAS SUPPLY AND PIPING
31
GAS SUPPLY
THIS FURNACE IS EQUIPPED AT
THE FACTORY FOR USE ON
NATURAL GAS ONLY. CONVER-
SION TO LP GAS REQUIRES A
SPECIAL KIT SUPPLIED BY THE
DISTRIBUTOR OR MANU-
FACTURER. MAILING ADDRESSES
ARE LISTED ON THE FURNACE
RATING PLATE, PARTS LIST AND
WARRANTY. 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 35
for typical gas pipe connections.
!
WARNING
FIGURE 35
GAS PIPING INSTALLATION
GROMMET
TOP VIEW OF GAS LINE AND VALVE
IN OPT. POSITION
NOTE: WHEN GAS LINE
IS IN OPT. POSITION,
SWAP LOCATION OF
GROMMET AND PLUG.
OPT. GAS LINE
POSITION
PLUG
(IN NORMAL
POSITION)
MANIFOLD
PRESSURE
TAP
IGNITOR
MANIFOLD
GAS VALVE
UNION
DRIP LEG
GROMMET
(IN NORMAL
POSITION)
4 TO 5 FEET
ABOVE
FLOOR REQ’D
BY SOME
UTILITIES.
MAIN GAS
VALVE
BURNERS
GROMMET
TOP VIEW OF GAS LINE AND VALVE
IN OPT. POSITION
MAIN GAS
VALVE
4 TO 5 FEET ABOVE
FLOOR REQ’D BY
SOME UTILITIES.
GROMMET
(IN NORMAL
POSITION)
DRIP LEG
UNION
GAS VALVE
BURNERS
MANIFOLD
IGNITOR
MANIFOLD
PRESSURE
TAP
PLUG
(IN NORMAL
POSITION)
NOTE: WHEN GAS
LINE IS IN OPT.
POSITION, SWAP
LOCATION OF
GROMMET AND
PLUG.
DOWNFLOW
I328
UPFLOW
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