Page 2 - Please read this page first; How to use this
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Part Number 550-110-592/0408 Please read this page first How to use this manual . . . The Boiler manual is for use only by a qualified heating installer/service technician. Refer only to this User’s Information Manual for your reference. Improper install...
Page 3 - User’s Information Manual; Boiler water
User’s Information Manual Part Number 550-110-592/0408 Failure to adhere to the guidelines on this page can result in severe personal injury, death or substantial property damage. S T O P ! ! — Read before proceeding Products to avoid Spray cans containing chloro/fluorocar-bons Permanent wave soluti...
Page 4 - Boiler components; CGs
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Part Number 550-110-592/0408 Boiler components 1 Gas valve 2 Pilot burner 3 Main burner 4 Gas manifold/orifices 5 Control module 6 Inducer (CGi and CGs only) 7 Vent damper (CGa only) 8 Water temperature limit switch 9 Transformer 10 Spill switch (CGa onl...
Page 5 - PFG
User’s Information Manual Part Number 550-110-592/0408 EG/EGH PFG LGB 1 Gas valve 2 Pilot burner 3 Main burner 4 Gas manifold/orifices 5 Control module 7 Vent damper 9 Transformer 10 Spill switch 12 Rollout thermal fuse element 13 Low water cutoff (steam boilers) 14 Limit control(s) 15 Draft hood 16...
Page 6 - Maintain boiler using schedule below; Service technician; Owner maintenance
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Part Number 550-110-592/0408 Maintain boiler using schedule below Tankless water heater (EG and EGH only) If boiler is used to supply domestic hot water, limit control should be set to supply adequate hot water. Weil-McLain tankless heaters are rated at ...
Page 7 - User maintenance procedures; Component information; Boiler area; Boiler must be serviced & maintained
User’s Information Manual Part Number 550-110-592/0408 User maintenance procedures Do not attempt to place boiler in operation if spill switch cuts off gas flow. Immediately call a service technician. Failure to do so can cause severe personal injury, death or substantial property damage. Rollout th...
Page 8 - Figure 3
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers Part Number 550-110-592/0408 ❏ Check daily . . . . . . . . . . . . . . . . . Air openings 1. Verify that combustion and ventilation air openings to the boiler room and/or building are open and unobstructed. . CGs boilers — Verify that boiler vent dischar...
Page 9 - Figure 4; Pilot burner flame; Figure 5; Figure 6; Clean vent termination & air; — CGs boilers only; Check condensate drain
User’s Information Manual Part Number 550-110-592/0408 Figure 4 Automatic air vent Automatic air vents (if used) 1. See Figure 4 . . R e m o v e t h e c a p f r o m a n y a u t o m a t i c a i r v e n t i n t h e system and check operation by depressing valve B slightly with the tip of a screwdriver...
Page 10 - Probe type— See Figure 8; Test low water cutoff (all steam boilers); Figure 7; Figure 8; Float type — See Figure 7
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers 10 Part Number 550-110-592/0408 Probe type— See Figure 8 1. Clean probe ty pe low water cutoff for proper operation. a. Turn off power to boiler and wait minutes. b. Drain water to bottom of gauge glass. c. Turn on power. d. Set thermostat to call for he...
Page 11 - Operate boiler relief valve; Figure 9; Clean gauge glass; Service periodically; continued
User’s Information Manual 11 Part Number 550-110-592/0408 Operate boiler relief valve ❏ Service every 6 months . . . . . . . . . To avoid water damage or scalding due to valve operation, a metal discharge line must be connected to relief valve outlet and run to a safe place of disposal. This dischar...
Page 12 - Follow boiler shutdown procedure; Propane gas odorant; Lighting instructions
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers 1 Part Number 550-110-592/0408 Follow boiler shutdown procedure ❏ End-of-season shutdown . . . . . . . . 1. Follow “ TO TURN OFF GAS TO APPLIANCE ” on the Lighting/Operating instructions on the inside of the jacket panel. You will also find these instruc...
Page 13 - FOR YOUR SAFETY READ BEFORE LIGHTING; TO TURN OFF GAS TO THE APPLIANCE
User’s Information Manual 1 Part Number 550-110-592/0408 Lighting instructions • Do not try to light any appliance.• Do not touch any electric 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...
Page 14 - Gas valve
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers 1 Part Number 550-110-592/0408 • Gas valve — Robertshaw 7200 • Do not try to light any appliance.• Do not touch any electric switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas suppl...
Page 16 - Operating instructions; FOR YOUR SAFETY READ BEFORE OPERATING
CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Boilers 1 Part Number 550-110-592/0408 • Do not try to light any appliance.• Do not touch any electric 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 c...
Page 23 - Common problems and solutions; Symptom
User’s Information Manual Part Number 550-110-592/0408 Common problems and solutions Symptom Common Causes Possible Corrections Rapid cycling — boiler turns on and off frequently Thermostat installed where drafts or heat affect reading Locate thermostat on inner wall away from heat sources or cool d...
Page 24 - Weil-McLain Limited Warranties; Ultra
Part No. 550-110-592/0408 Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com Residential & Commercial Cast Iron Boilers Re side ntial Water Warranty — Limited Lifetime Re side ntial Steam Warranty — Li mite d 10 Year Comme rcial Warranty — Li mite d 10 Ye...
