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

11c Troubleshooting — control module lights (cont.)

CHART 3 PRESS SWITCH & POWER lights flashing

— Usually indicates pressure switch stuck closed or failed to make within 5 minutes —

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 inducer motor operate?

No

• Wait 45 seconds.

Does inducer motor operate?

Yes

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

 

 

 

• Wait 5 minutes.

Is PRESS SWITCH light flashing?

No

Yes

• Try reseating plug in module receptacle and restart.

• If inducer still does not work, 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?

Boiler should be in normal operating sequence.

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

Are vent or combustion air

passages blocked?

No

 

Yes

 

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace control

 

• Check air pressure switch

 

 

per manual Section 11a.

 

module.

 

 

 

 

Replace if necessary.

Retest.

 

 

Retest.

 

 

 

 

 

 

 

 

 

 

 

Clear passages and recycle boiler.

Recheck boiler operation.

Part Number 550-110-711/1108

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Weil-McLain CGI-4E manual Chart 3 Press Switch & Power lights flashing

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.

The CGI-4E is also remarkable for its versatility. It is offered in a variety of sizes, making it suitable for different heating loads. This flexibility allows for installation in a wide range of environments, adapting easily to both existing and new heating systems. Additionally, the boiler comes with multiple venting options, including direct vent and conventional venting, further enhancing its installation flexibility.

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.

The CGI-4E also emphasizes ease of maintenance, with service-friendly designs that allow technicians to access components without difficulty. This consideration translates to reduced downtime and lower maintenance costs, ensuring that the boiler operates efficiently over its lifetime.

Overall, the Weil-McLain CGI-4E blends reliability, efficiency, and advanced technology, making it a premier choice for commercial heating needs. Its cast iron construction, impressive efficiency ratings, versatile installation options, and user-friendly controls solidify its reputation as a leading boiler solution in the industry.