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Weil-McLain WGO Maintenance & Service Manual

Series 3 oil-fired water boilers
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WGO, WTGO and SGO-W
WGO, WTGO and SGO-W
WGO, WTGO and SGO-W
WGO, WTGO and SGO-W
WGO, WTGO and SGO-W
For futur
For futur
For future r
For futur
For futur
in the envelope pr
in the envelope provided with the boiler
in the envelope pr
in the envelope pr
in the envelope pr
Series 3
Series 3
Series 3 Oil-Fir
Series 3
Series 3
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with other boiler instructions
with other boiler instructions
with other boiler instructions
with other boiler instructions
with other boiler instructions
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ater Boilers
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Maintenance
Maintenance
Maintenance
Maintenance
Maintenance
and Service
and Service
and Service
and Service
and Service
Guide
Guide
Guide
Guide
Guide
Part No. 550-141-828/1202
Part No. 550-141-828/1202
Part No. 550-141-828/1202
Part No. 550-141-828/1202
Part No. 550-141-828/1202

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  Summary of Contents for Weil-McLain WGO

  • Page 1 WGO, WTGO and SGO-W WGO, WTGO and SGO-W WGO, WTGO and SGO-W WGO, WTGO and SGO-W WGO, WTGO and SGO-W For futur For futur For futur For future r For futur e refer with other boiler instructions with other boiler instructions...
  • Page 2: Hazard Definitions

    Hazard Definitions Following terms are used to bring attention to the presence of hazards of various risk levels, or to important information concerning product life. Indicates presence of hazards that will cause severe personal injury, death or substantial property damage if ignored. Indicates presence of hazards that can cause severe personal injury, death or substantial property damage if ignored.
  • Page 3: For Your Safety

    For Your Safety DANGER Follow instructions below to prevent severe personal injury, death or substan- tial property damage: Do not use crankcase drainings or any oil ● ● ● ● ● containing gasoline. See burner manual for proper fuel oil. Do not attempt to start burner when excess ●...
  • Page 4: Routine Maintenance Schedule

    The schedule below is specifically designed for the homeowner. Please read pages 2 and 3 before proceeding. Beginning each heating season: Call a qualified service technician to perform annual service. Daily during heating season: Check that boiler area is free from combusti- ble materials, gasoline and other flammable vapors and liquids.
  • Page 5 WGO/WTGO (see Figure 1): 1. If burner does not fire, check for: Service switch on boiler or additional switches turned off. Fuses or breaker switch tripped. Thermostat set below room temperature. Fuel valves turned off. Not enough oil in tank to supply burner.
  • Page 6 SGO-W (see Figure 2): 1. If burner does not fire, check for: Service switch on boiler or additional ● ● ● ● ● switches turned off. ● ● ● ● ● Fuses or breaker switch tripped. Thermostat set below room temperature. ●...
  • Page 7 COMMON PROBLEMS Rapid cycling - burner turns on and off frequently. Need to frequently add makeup water. Popping or percolating noise heard in boiler. Black water condition. Frequent release of water through relief valve. Metal flakes found in flueway. Some radiators or baseboard units do not heat or are noisy.
  • Page 8: Annual Service Check List

    See page 10. 10 Verify operation of all controls on boiler. See page 11. Any parts of the boiler furnished by Weil-McLain must be replaced by parts listed in Annual Service Check List Weil-McLain Boiler and Repair Parts Book. Comments...
  • Page 9: Detailed Service Procedures

    Detailed Service Procedures Cleaning boiler flueways: DANGER Make sure all electrical connections to boiler are turned off and wait until boiler is warm, not hot, before cleaning. Failure to do so will result in severe personal injury, death or substantial property damage. 1.
  • Page 10 Fill the system: 1. Close manual and automatic air vents and drain cock. 2. Fill to correct system pressure. Correct pres- sure will vary with each installation. Normal cold water fill pressure for residential systems is 12 psig. Boiler water pH 7.0 to 8.5 is recom- mended.
  • Page 11 Over-oiling will damage circulator. Water-lubricated circulators do not need oiling. TANKLESS WATER HEATER: Weil-McLain tankless heater ratings are based on F boiler water temperature. To get rated out- put, set tankless heater control to 200 can be adjusted to meet system hot water re- quirements.
  • Page 12 Part No. 550-141-828/1202...

This manual is also suitable for:

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