GOLD CGi-4E Gas-Fired Water Boiler — Boiler Manual

11c Troubleshooting — control module lights (cont.)

CHART 5 PRESS SWITCH light flashing and POWER light on steady

— Usually indicates pressure switch opened during run cycle —

— May also be caused by wind gusts in excess of 31 mph for non-direct vent sidewall-vented boilers —

Electrical shock hazard — Wherever you see TURN OFF POWER, follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.

Reset boiler control by turning off power at service switch or turning down thermostat for at least 45 seconds.

Thermostat should call for heat and appropriate zone valves open.

Does blower motor operate?

No

Yes

Remove INDUCER plug (Figure 38, Item 6, page 50) from plug receptacle of control module.

Place voltmeter leads across the 120 VAC N and

120 VAC H pins of the INDUCER receptacle (left column center and right column bottom pins).

Does the voltmeter indicate 120 VAC?

No

 

Yes

 

 

 

 

• Replace inducer assembly.

• Retest.

Remove one of the wires connected to the pressure switch.

Check continuity across the switch terminals.

Does the ohmmeter indicate the switch is closed?

No

 

Yes

 

 

 

 

• Wait 5 minutes.

Is PRESS SWITCH light flashing?

No

 

Yes

 

 

 

 

Boiler should be in normal operating sequence.

Observe operation until thermostat is satisfied and inducer has completed its post- purge cycle.

Inspect and check wire harness from control module to pressure switch.

Reseat connector in control module receptacle.

If harness is intact and properly seated, but problem persists, replace control module.

Retest.

Is vent blocked?

No

 

Yes

 

 

 

 

 

 

 

Check air pressure switch per manual Section 11a.

 

Clear vent and recycle boiler.

Replace if necessary. Retest.

 

Recheck boiler operation.

 

 

 

 

 

Part Number 550-110-711/1108

55

 

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Weil-McLain CGI-4E manual Does blower motor operate?

CGI-4E specifications

The Weil-McLain CGI-4E is a standout in the realm of commercial boilers, designed to meet the rigorous demands of a variety of heating applications. This gas-fired cast iron boiler exemplifies durability, efficiency, and performance, making it a popular choice in various commercial settings, including schools, hospitals, and office buildings.

One of the main features of the CGI-4E is its cast iron construction. Cast iron has long been favored for its excellent heat retention and distribution capabilities, leading to improved overall efficiency. The boiler is designed to maximize heat output while minimizing energy consumption. This characteristic is especially beneficial for businesses seeking to lower their energy costs without sacrificing comfort.

In terms of efficiency, the Weil-McLain CGI-4E boasts an impressive thermal efficiency rating. Its design incorporates advanced technology, allowing it to achieve an AFUE rating of up to 84%. This efficiency is achieved through features such as a full-modulating burner and a unique heat exchanger design that allows for optimal heat transfer and reduced flue gas temperatures.

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Another standout feature is the integrated boiler control system, which simplifies operation and monitoring. This control system optimizes burner performance and enhances safety features, including automatic shut-off in case of system anomalies. The advanced controls also allow for easy integration with building management systems, enabling better energy management and reduced operational costs.

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