Weil-McLain CGa User's Information Manual
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Weil-McLain CGa User's Information Manual

Gas-fired boilers
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If the information in this manual is not followed exactly, a fire or
explosion may result, causing property damage, personal injury or
loss of life.
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any phone in your
building.
•
Immediately call your gas supplier from a neighbor's phone. Follow
the gas supplier's instructions.
•
If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service
technician or the gas supplier.
CGa, CGi, CGs, EG,
EGH, LGB, PEG, PFG
Gas-Fired Boilers
Information
WHAT TO DO IF YOU SMELL GAS
User's
Manual
Part Number 550-110-592/0709

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Summary of Contents for Weil-McLain CGa

  • Page 1 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Gas-Fired Boilers User’s Information Manual If the information in this manual is not followed exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
  • Page 2 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Please read this page first How to use this To . . . Read/use . . . Pages . . . manual . . . Learn 1, 2, and 3 Warnings and definitions precautions Read list of air contaminants you must avoid.

  • Page 3: Service And Maintenance

    User’s Information Manual ST OP ! ! — Read before proceeding Failure to adhere to the guidelines on this page can result in severe personal injury, death or substantial property damage. Air contamination Products to avoid • To prevent potential of severe personal injury or death, check for products or areas listed in table at right before installing boiler.

  • Page 4: Boiler Components

    CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Boiler components Gas valve Pilot burner Main burner Gas manifold/orifices Control module Inducer (CGi and CGs only) Vent damper (CGa only) Water temperature limit switch Transformer Spill switch (CGa only) Air pressure switch (CGi and CGs only)
  • Page 5 User’s Information Manual EG/EGH Gas valve Pilot burner Main burner Gas manifold/orifices Control module Vent damper Transformer Spill switch Rollout thermal fuse element Low water cutoff (steam boilers) Limit control(s) Draft hood Circulator Gauge (pressure or pressure/temperature) Gauge glass (steam only) Part Number 550-110-592/0709...

  • Page 6: Service Technician

    CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Maintain boiler using schedule below Service technician Owner maintenance (covered in Boiler Manual — for use only by a (see following pages for instructions) qualified service technician) Inspect: • Check boiler area •...

  • Page 7: User Maintenance Procedures

    Rollout thermal fuse element Figure 1 Rollout thermal fuse element CGa, CGi, CGs, EG, EGH, PEG & PFG-5 only Cuts off gas flow should flame rollout occur. See Figure 1 Do not attempt to place boiler in operation if rollout thermal fuse element cuts off gas flow.

  • Page 8: Air Openings

    CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Check daily ....❏ Pressure/temperature gauge Air openings or pressure gauge (steam) 1. Verify that combustion and ventilation air openings to the boiler room and/or building are open and 1.

  • Page 9: Check Condensate Drain

    User’s Information Manual Check monthly ....❏ Automatic air vents (if used) Main burner flame Proper Figure 6 main burner flame (see Figure 4 1. See 1.
  • Page 10 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Service periodically ... . ❏ Test low water cutoff (all steam boilers) (water boilers, if installed) If the system is equipped with a low water cutoff, test the low water cutoff periodically during the heating season.
  • Page 11 User’s Information Manual Service periodically ..❏ continued Clean gauge glass Figure 9 Gauge glass Normal waterline on a steam boiler is halfway up gauge glass. See Figure 9. Clean when needed. 1. Close lower gauge cock. 2.

  • Page 12: Lighting Instructions

    CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers End-of-season shutdown ..❏ Follow boiler shutdown procedure TO TURN OFF GAS TO APPLIANCE 1. Follow “ ” on the 2. Do not drain system unless exposure to freezing...
  • Page 13 User’s Information Manual Lighting instructions CGa, EG-30 to EG-65, PEG-30 to PEG-55 • Standing pilot • Gas valve — Honeywell VR8200/VR8300 FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 14 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Lighting instructions CGa-25 to CGa-6, EG-30 to EG-50, • Standing pilot PEG-30 to PEG-50 • Gas valve — Robertshaw 7200 FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 15 User’s Information Manual Lighting instructions EG-75, EGH-85, EGH-95, PFG-6, PFG-7 • Standing pilot • Gas valve — Robertshaw 7000ERHC FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A.

  • Page 16: For Your Safety Read Before Operating

    CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Operating instructions CGa, EG-30 to EG-75, PEG-30 to PEG-55, • Spark-ignited pilot PFG-5 • Gas valve — Honeywell VR8204/VR8304 FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

  • Page 17: Operating Instructions

    User’s Information Manual Operating instructions CGa-25 to CGa-6, EG-30 to EG-50, • Spark-ignited pilot PEG-30 to PEG-50 • Gas valve — White-Rodgers 36E FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 18 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Operating instructions CGa-7, CGa-8, EG-55 to EG-75, • Spark-ignited pilot PEG-55, PFG-5 • Gas valve — White-Rodgers 36C FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 19 User’s Information Manual Operating instructions CGa-25 to CGa-6, EG-30 to EG-50, • Spark-ignited pilot PEG-30 to PEG-50 • Gas valve — Robertshaw 7200 FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 20 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Operating instructions EGH-85 to EGH-125, PFG-6 to PFG-8 • Spark-ignited pilot • Gas valve — Robertshaw 7000DERHC FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 21 User’s Information Manual Operating instructions CGi, CGs • Spark-ignited pilot • Gas valve — Honeywell VR8204/VR8304, White-Rodgers 36C and 36E FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 22 CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Operating instructions • Spark-ignited pilot Part Number 550-110-592/0709...

  • Page 23: Common Problems And Solutions

    User’s Information Manual Common problems and solutions Symptom Common Causes Possible Corrections Rapid cycling — Thermostat installed where drafts Locate thermostat on inner wall away from heat sources or cool boiler turns on and or heat affect reading drafts. off frequently Heat anticipator in thermostat Adjust thermostat per manufacturer's instructions.
  • Page 24 Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com Part No. 550-110-592/0709...

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