24
• Use listed gas appliance connectors in accordance with
their instructions. Connectors must be fully in the same
room as the furnace.
• Protect connectors and semi-rigid tubing against physical
and thermal damage when installed. Ensure aluminum-
alloy tubing and connectors are coated to protect against
external corrosion when in contact with masonry, plaster, or
insulation, or subjected to repeated wetting by liquids such
as water (except rain water), detergents, or sewage.
MANIFOLD
GAS VALVE
HORIZONTAL [UPFLOW MODEL]
PLUG IN
ALTERNATE
GAS LINE
HOLE
ALTERNATE
GAS LINE
LOCATION
BURNERS
MANUAL
SHUT OFF VALVE
(UPSTREAM FROM
GROUND JOINT
PIPE UNION)
HEIGHT REQUIRED
BY LOCAL CODE
GROMMET
IN STANDARD
GAS LINE HOLE
DRIP LEG
GROUND JOINT
PIPE UNION
GROUND JOINT
PIPE UNION
MANUAL SHUT OFF VALVE
(UPSTREAM FROM
GROUND JOINT PIPE UNION)
DRIP LEG
GROMMET
IN STANDARD
GAS LINE HOLE
GAS VALVE
BURNERS
ALTERNATE
GAS LINE LOCATION
MANIFOLD
PLUG-IN ALTERNATE
GAS LINE HOLE
DRAIN TRAP
2. DRIP LEG MAY TERMINATE WITH A 1/2" X 1/8" PIPE PLUG
TO ACCOMMODATE LINE GAS PRESSURE MEASUREMENT.
NOTES: 1. WHEN GAS LINE IS IN THE ALTERNATE LOCATION,
SWAP THE POSITION OF THE PLUG AND GROMMET.
DIRECT/STANDARD INLET PIPING
When gas piping enters directly to the gas valve through the stan-
dard inlet hole, the installer must supply straight pipe with a ground
joint union to reach the exterior of the furnace. The rigid pipe must
be long enough to reach the outside of the cabinet to seal the
grommet cabinet penetration. A semi-rigid connector to the gas
piping can be used outside the cabinet per local codes.
INDIRECT/ALTERNATE INLET PIPING
When gas piping enters indirectly to the gas valve through the
alternate gas inlet hole, the following 1/2 inch pipe fittings (start-
ing from the gas valve) to reach the outside of the cabinet must be
supplied:
• (1) 90 degree street elbow
• (1) 2 1/2” pipe nipple
• (1) 90 degree elbow
• Straight Pipe
• The straight pipe must be long enough to reach the outside
of the cabinet so as to seal the grommet cabinet penetration
and to install the ground joint union outside the cabinet. A
semi-rigid connector to the gas piping can be used outside
the cabinet per local codes.
GAS PIPING CHECKS
Before placing unit in operation, leak test the unit and gas con-
nections.
WARNING
T
O AVOID THE POSSIBILITY OF EXPLOSION OR FIRE, NEVER USE A MATCH OR
OPEN FLAME TO TEST FOR LEAKS.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
testing methods.
NOTE: Never exceed specified pressures for testing. Higher
pressure may damage the gas valve and cause subsequent
overfiring, resulting in heat exchanger failure.
Disconnect this unit and shutoff valve from the gas supply piping
system before pressure testing the supply piping system with
pressures in excess of 1/2 psig (3.48 kPa).
Isolate this unit from the gas supply piping system by closing its
external manual gas shutoff valve before pressure testing supply
piping system with test pressures equal to or less than 1/2 psig
(3.48 kPa).
PROPANE GAS TANKS AND PIPING
WARNING
P
ROPANE GAS IS HEAVIER THAN AIR AND ANY LEAKING GAS CAN SETTLE IN
ANY LOW AREAS OR CONFINED SPACES.
T
O PREVENT PROPERTY DAMAGE,
PERSONAL INJURY, OR DEATH DUE TO FIRE OR EXPLOSION CAUSED BY A
PROPANE GAS LEAK, INSTALL A GAS DETECTION WARNING DEVICE.
A gas detecting warning system is the only reliable way to detect a
propane gas leak. Rust can reduce the level of odorant in pro-
pane gas. Do not rely on your sense of smell. Contact a local
propane gas supplier about installing a gas detecting warning
system. If the presence of gas is suspected, follow the instruc-
tions on Page 4 of this manual.
Gas Piping Connections
CAUTION
E
DGES OF SHEET METAL HOLES MAY BE SHARP.
U
SE GLOVES AS A
PRECAUTION WHEN REMOVING HOLE PLUGS.
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