Weil-McLain CGa manual Common problems and solutions, Symptom Common Causes Possible Corrections

Page 23

UserísInformationManual

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.

 

 

adjusted incorrectly

 

 

 

 

 

Incorrect limit setting

Set limit according to system needs. Maximum setting is 220˚F.

 

 

Increase limit setting to decrease cycling.

 

 

 

 

Insufficient water flow through

Check all valves to and from boiler. Return to proper setting.

 

boiler

 

 

Confirm circulator size.

 

 

 

 

 

Frequent release of

Expansion tank sized too small

Call qualified service technician to check expansion tank

water through relief

 

operation and size.

valve

 

 

Flooded expansion tank

Call qualified service technician to check expansion tank

 

 

 

operation.

 

 

 

 

Inoperative limit control

Call qualified service technician to replace limit control.

 

 

 

Need to frequently

Leaks in boiler or piping

Have qualified service technician repair leaks at once to avoid

add makeup water

 

constant use of makeup water. Makeup water can cause

 

 

mineral deposits which, in turn, can cause boiler section failure.

 

 

Do not use petroleum-base stop-leak compounds.

 

 

 

Black water

Oxygen corrosion due to leaks in

Have qualified service technician repair at once. Keep pH of

condition

boiler and piping

water between 7.0 to 8.5.

Popping or

Mineral deposits in sections due

Call qualified service technician to de-lime boiler, if necessary.

percolating noise

to constant use of makeup water

In some cases, deposits will be too heavy to remove with de-

heard in boiler

 

liming procedures.

 

 

 

 

 

Have qualified service technician repair leaks to eliminate need

 

 

for constant makeup water.

 

 

 

 

Incorrect pH of boiler water

Call qualified service technician to check pH level and correct.

 

 

pH should be maintained between 7.0 to 8.5.

 

 

 

 

Insufficient water flow through

Check all valves to and from boiler. Return to proper setting.

 

boiler

 

 

Confirm circulator size.

 

 

 

 

 

Metal flakes found in

Contaminated combustion air

Remove any contaminating products. See page 3 in this

vent outlet or vent —

supply — See page 3 in this

manual.

flueway corrosion

manual.

 

Provide outside air for combustion. Kit available through Weil-

 

 

 

 

McLain distributor. Have qualified service technician pipe-up kit.

 

 

 

 

Condensation of combustion

Have qualified service technician inspect system piping and

 

gases in boiler sections

controls to verify proper regulation of return water temperature.

 

 

 

Some radiators or

Air in system

Bleed air from system through air vents in radiators or

baseboard units do

 

baseboard units.

not heat or are noisy

 

 

Low system pressure

Fill to correct pressure.

 

 

 

 

 

 

Check for leaks in boiler or piping. Have qualified service

 

 

technician repair at once.

 

 

 

 

High limit set too low

Adjust high limit to higher setting.

 

 

 

Part Number 550-110-592/1099

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Contents CGa, CGi, CGs, EG, EGH, LGB, PEG, PFG Please read this page first CGa,CGi,CGs,EG,EGH,LGB,PEG,PFGBoilersSTOP!! Read before proceeding UserísInformationManualBoiler components CGiLGB Tankless water heater EG and EGH only Maintain boiler using schedule belowBoiler area User maintenance proceduresCheck daily Check monthly Check condensate drain system Clean vent termination & air intake screensAutomatic air vents if used Main burner flame Pilot burner flameFloat type See Figure Service periodicallyOperate boiler relief valve Service every 6 monthsClean gauge glass Propane gas odorant Follow boiler shutdown procedureLighting instructions End-of-season shutdownLighting Instructions Foryour Safety Read Before LightingCGa, EG-30 to EG-65 PEG-30 to PEG-55CGa-25 to CGa-6, EG-30 to EG-50, PEG-30 to PEG-50 Position Selector Indicator ArmOperating Instructions EG-75, EGH-85, EGH-95PFG-6, PFG-7 CGa, EG-30 to EG-75, PEG-30 to PEG-55, PFG-5 Foryour Safety Read Before OperatingOperating instructions Spark-ignited pilot Gas valve White-Rodgers 36E CGa-7, CGa-8, EG-55 to EG-75, PEG-55, PFG-5 Spark-ignited pilot Gas valve Robertshaw PFG-6 to PFG-8 EGH-85 to EGH-125To Turn OFF GAS to the Appliance For Your Safety Read Before OperatingCGi, CGs To Place in Operation Annual Shutdown ProcedureSymptom Common Causes Possible Corrections Common problems and solutionsWeil-McLain Blaine Street Michigan City,

CGa specifications

The Weil-McLain CGa is a highly efficient and reliable gas-fired boiler that has established itself as a favorite among homeowners and HVAC professionals alike. Known for its impressive performance and durability, the CGa series is designed to deliver comfort while optimizing energy consumption.

One of the main features of the Weil-McLain CGa is its efficiency. With an AFUE (Annual Fuel Utilization Efficiency) rating of up to 84%, this boiler efficiently converts gas into heat, ensuring minimal energy waste. This efficiency not only translates to cost savings on energy bills but also supports environmental sustainability through reduced emissions.

The CGa boilers are designed for versatility, capable of being used in various applications, including residential heating systems and light commercial settings. With a range of models available, the CGa can meet different heating demands, ensuring consistent comfort regardless of the building size or layout.

The boiler's built-in heating capabilities include the option for either hot water or steam heating, adding to its versatility. Weil-McLain offers multiple BTU outputs across the CGa series, allowing for a customized solution based on specific heating requirements.

State-of-the-art technologies are evident in the CGa's design. The integrated hot surface ignition system enhances start-up reliability, minimizing the risk of combustion issues and ensuring safe operation. Additionally, the unit features a standard draft diverter for efficient venting, allowing for optimal exhaust management within the heating system.

Durability is another key characteristic of the Weil-McLain CGa. Constructed from high-quality materials, these boilers are engineered to withstand the rigors of daily operation. The cast iron heat exchanger provides superior heat retention and longevity, ensuring that the system remains operational for years with proper maintenance.

Installation of the CGa boiler is straightforward due to its compact design and versatile venting options, which can accommodate various installation configurations. This ease of installation combined with a user-friendly interface allows homeowners and technicians alike to manage the system with minimal hassle.

In summary, the Weil-McLain CGa boiler epitomizes efficiency, durability, and versatility. Its advanced technologies and robust construction make it a top choice for those seeking a reliable heating solution for their homes or commercial spaces. With Weil-McLain's commitment to quality and innovation, the CGa series delivers performance that meets the diverse needs of today's heating applications.
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