Weil-McLain 78 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners
Install Burner
12a
Wiring and Fuel Piping
13a
To install burner:
1. Unpack burner.
2. Place gasket around air tube and against
burner mounting flange. If sealing rope is
used, apply 1/8" continuous bead of rope
adhesive around burner mounting flange and
apply sealing rope to make gas-tight seal.
3. Mount burner into opening in burner
mounting plate.
Maintain gas-tight seal between
burner mounting flange and plate
to prevent damage to air tube.
4. Level burner using burner support brackets
where required.
5. Secure with furnished bolts.
6. Retain burner information packet. Keep with
boiler.
Electric shock hazard. Can cause severe
personal injury or death if power source is not
disconnected before installing or servicing
boiler and burner.
To wire burner and boiler controls:
1. Install all wiring in compliance with:
• National Electrical Code ANSI/NFPA 70.
• Any additional national, state, or local
codes.
2. Follow burner manual and wiring diagram
found in burner information packet.
3. Use 14 ga. wire for operating and safety
circuit wiring.
4. Where burner motor voltage differs from
control voltage, supply proper voltage to each.
Size fused disconnect(s) and conductors per
National Electrical Code ANSI/ NFPA 70.
To install gas and/or oil piping:
1. Install all piping in compliance with:
• Local, state or national codes and
regulations.
• Separate burner manual provided with
burner.
2. Use pipe joint compound (pipe dope)
resistant to corrosive action of fuel oil or
liquified petroleum gases. Apply sparingly
to male threads of pipe joints. Do not use
any kind of pipe tape.
3. Oil piping - use flare-type fittings, not
compression type.
Do not use compression or
soldered fittings. No safe
repair can be made. Severe
personal injury, death or
substantial property damage
will result.
Part No. 550-141-705
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