Installation guide

2. Screw elbow assembly into gas valve far enough to be leak
proof. Position el bow assembly so that the inlet of the el bow is
at the bottom of the gas valve. An additional 1/2 turn will be re-
quired in step 3. Turn open end of inlet elbow to face the right
side of the furnace (1/4 turn), see Figure 9.
3. Turn assembly an additional 1/2 turn to position inlet near the
top of the gas valve and in line with gas opening on right side of
furnace, see Figure 7 and Figure 10.
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E,bows *aDNL
25-23-23c
Gas Valve with Elbows (*8DNL)
25-25-03
Gas Valve with Elbows (*aDNL)
25-25-12
4. Gas supply line then can be run directly into opening of elbow.
Piping with Close Nipples and Standard Elbows
1. Assemble elbows and nipples similar to street elbows shown
in Figure 8.
2. Follow steps 2 through 4 Piping with Street Elbows.
FIRE OR EXPLOSION HAZARD.
Failure to properly install metal gas connector could
result in death, personal injury and/or property
damage.
A flexible corrugated metal gas connector must be
properly installed, shall not extend through the side
of the furnace, and shall not be used inside the
furnace.
Black iron pipe shall be installed at the furnace gas
control valve and extend a minimum of 2" outside
furnace.
Additional LP Piping Requirements
• Have a licensed LP gas dealer make all connections at storage
tank and check all connections from tank to furnace.
• If copper tubing is used, it MUST comply with limitation set in
Local Codes, or in the absence of local codes, the gas codes of
the country having jurisdiction.
• Two-stage regulation of LP gas is recommended.
FIRE OR EXPLOSION HAZARD.
A natural gas or LP gas leak ignited by an open
flame or spark could result in death, personal injury
and/or property damage.
Natural gas is lighter than air and will rise. Liquefied
petroleum (LP) gas is heavier than air and will settle
and remain in low areas and open depressions.
Thoroughly ventilate area and dissipate gas. Do
NOT use a match or open flame to test for leaks, or
attempt to start up furnace before thoroughly
ventilating area.
FinalCheck
• Test all pipes for leaks.
• If orifices were changed, make sure they are checked for
leaks.
• During pressure testing of gas supply piping system:
a. If test pressure does not exceed 1/2 psi, isolate the
furnace from the gas supply piping system by closing the
equipment shutoff valve.
b. If test pressure exceeds 1/2 psi, the furnace and its
manual equipment shutoff valve must be disconnected
from the gas supply piping system.
• To check for leaks apply soap suds or a liquid detergent to
each joint. Bubbles forming indicate a leak.
• Do not use an open flame to test for gas leaks. Fire or explo-
sion could occur.
• Correct even the smallest leak at once.
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