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manual Part No. 550-141-828/1202, WGO, WTGO and SGO-W, and Service Guide
Models:
WGO
1
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12
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Weil-McLainBoiler and Repair Parts Book
Maintenance
Common Problems
Reset Button on Burner Primary Control
Detailed Service Procedures
Temperature Pressure Gauge Tankless Heater
Symbol Definitions
Safety
Controls requiring annual service
Page 1
Image 1
WGO, WTGO and
SGO-W
Series 3
Oil-Fired
Water Boilers
Maintenance
and Service
Guide
For future reference, leave this manual
with other boiler instructions
in the envelope provided with the boiler.
Part No.
550-141-828/1202
Page 2
Page 1
Image 1
Page 2
Contents
Series 3 Oil-FiredWater Boilers Maintenance
Part No. 550-141-828/1202
and Service Guide
WGO, WTGO and SGO-W
Read This Page First
Symbol Definitions
Hazard Definitions
Tips for water systems
ForYour Safety
Please read pages 2 and 3 before proceeding
Routine Maintenance Schedule
Beginning each heating season
Daily during heating season
WGO/WTGO see Figure
Start-up
Temperature Pressure Gauge
Service Switch on Boiler Burner Disconnect Plug
Temperature Pressure Gauge Tankless Heater
SGO-Wsee Figure
Start-up
1.If burner does not fire, check for
COMMON CAUSES
COMMON PROBLEMS
CORRECTIONS
Weil-McLainBoiler and Repair Parts Book
Annual Service Check List
Annual Service Call Check List
follow in order listed below
Cleaning boiler flueways
Detailed Service Procedures
To place in operation
Fill the system
Detailed Service Procedures
General description of control operation
Controls requiring annual service
Detailed Service Procedures
Part No. 550-141-828/1202
