Weil-McLain 78 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners

12a Install Burner

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.

13a Wiring and Fuel Piping

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.

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Part No. 550-141-705

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Weil-McLain 78 manual 12a Install Burner, 13a Wiring and Fuel Piping, To install burner, To wire burner and boiler controls

78 specifications

The Weil-McLain 78 is a high-efficiency, versatile cast iron boiler that has been a staple in residential and commercial heating applications for decades. Renowned for its durability and performance, the boiler is designed to provide reliable heat while maintaining efficiency and minimizing energy consumption.

One of the main features of the Weil-McLain 78 is its cast iron construction. This material is not only known for its longevity but also for its excellent heat retention properties. The cast iron sections allow for a slow, steady heat release, ensuring that spaces remain warm and comfortable. The boiler is built to withstand the rigors of everyday use, making it ideal for both home and business environments.

In terms of technology, the Weil-McLain 78 incorporates an advanced combustion system that optimizes fuel usage. This efficient burning process not only conserves energy but also contributes to lower utility bills for users. Moreover, the boiler is designed to work well with natural gas or propane, giving homeowners and businesses flexibility in fuel choices.

Another characteristic contributing to the Weil-McLain 78’s reputation is its efficiency ratings. With a rating of 83% AFUE (Annual Fuel Utilization Efficiency), this boiler stands out in its class. This efficiency not only reduces carbon emissions but also enhances overall operational effectiveness, allowing for significant energy savings over time.

The Weil-McLain 78 is also designed for ease of installation and maintenance. Its compact design allows it to fit in tighter spaces, and the accessibility of key components simplifies routine servicing. The unit comes with a multitude of options for controls and accessories, ensuring adaptability to various heating systems.

Furthermore, Weil-McLain places a strong emphasis on safety features. The 78 model incorporates multiple safety controls, including a temperature limit switch and an automatic shut-off system. These features help prevent overheating and provide peace of mind for users.

In conclusion, the Weil-McLain 78 combines robust construction, advanced technology, and efficiency, making it an excellent choice for various heating needs. Its reputation for reliability, comfort, and safety has positioned it as a leader in the boiler market for both residential and commercial applications. With the Weil-McLain 78, users can enjoy consistent warmth and comfort for years to come, backed by a trusted name in heating solutions.