MN801GAS 060520
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Inspect components and wiring
• Visually inspect all burner components and wiring.
• Verify that wiring is intact and leads are securely connected.
• Verify that all burner components are in good condition.
Install gas train on burner
1. The standard burner gas train is shipped fully assembled, with the piping
disconnected at the gas train unions. See separate instructions if installing
an optional knocked down gas train. The gas train is available in either
an angled (standard) or straight (optional) configuration.
2. Connect the main and pilot gas trains at the unions (Figure 4).
To avoid damage to gas train components, do not hold compo-
nents with a pipe wrench or overtighten. Use only a crescent
wrench or other means. Failure to comply could result in severe
personal injury, death or substantial property damage.
3. Connect the flexible conduit, pre-attached to the burner J-box, to the gas
train J-box, and attach the wires to the terminal strip inside the gas train
J-box.
a.
Match wire colors of the incoming wires to those pre-wired to the terminal
strip inside the gas train J-box.
b.
See the label in the burner junction box or the wiring diagrams on pages
13- 14.
Gas valve vent opening — The V48 diaphragm gas valve is
NOT fitted with a vent limiting orifice in the vent connection.
If local codes require, install piping from the vent connection
to outside, sized and installed as required by codes. Because
this is a diaphragm-assisted solenoid valve, a small amount of
gas will exit from the vent orifice each time the valve opens.
Figure 4
Gas train installation (shown with angled gas train)
2. Prepare site • assemble burner • mount burner
(continued)
Connect from the gas supply to the burner gas train inlet using new, clean black iron pipe and malleable iron fittings only. Do not use
copper, brass, cast iron or galvanized pipe or fittings.
Provide support for gas piping. Do not rest the weight of the gas piping on burner gas train.
Provide a support for the burner gas train.
Apply pipe dope sparingly at all joints. Use only pipe dope listed for use with propane gas. Do not use pipe sealing tape.
Do not hold the gas valve with pipe wrench. Use crescent wrench or other smooth-jawed device. Do not overtighten.
Failure to comply with above could result in severe personal injury, death or substantial property damage.
Do not expose the gas train to gas pressure in excess of 14 inches water column. Higher pressure could damage the valve seat,
resulting in potentially hazardous condition. When pressure testing piping at higher pressures, disconnect burner from gas line before
testing.
If the gas supply pressure can exceed 14 inches water column at any time, you must install a lockup type gas pressure regulator in
the gas supply piping, ahead of the main manual gas valve installed at the burner.
Connect pilot gas
train at union
Connect main gas
train at union
