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

11c Troubleshooting — control module lights

CHART 1 — Troubleshooting POWER light status

— Usually indicates reversed 120 VAC polarity if POWER light flashes by itself —

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.

Is POWER light off?

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

Is POWER light ...

 

 

 

 

 

 

Flashing

Flashing with

On steady

alone

another light

(not flashing)

 

 

 

 

 

 

 

 

 

 

 

 

 

TSTAT CIRC

Chart

 

 

 

light flashing

2

 

 

 

 

 

 

 

 

 

 

 

 

PRESS SWITCH

Chart

Chart

 

light flashing

3

5

 

 

 

 

 

 

 

FLAME

Chart

Chart

 

light flashing

4

6

 

 

 

 

 

 

For insufficient heat or no heat problem, go to Chart 7 if POWER light is on steady, with no other light flashing.

•Make sure service switch or circuit breaker is on or fuses are good.

•Remove 120 VAC IN plug (Figure 38, Item 3, page 50) on control module.

•Using voltmeter, check across top and bottom pins of

120 VAC IN plug.

Does voltmeter indicate 120 VAC?

No

Yes

Problem is with incoming electricity. Have licensed electrician repair circuit.

•Reconnect 120 VAC IN plug.

•Remove 120 VAC IN transformer PRIMARY plug (Figure 38, Item 2, page 50) on control module.

•Using voltmeter, check across top and bottom pins of

PRIMARY receptacle.

Does voltmeter indicate 120 VAC?

No

Yes

•Usually indicates polarity on incoming 120 VAC power line is wrong.

•TURN OFF POWER at service switch or breaker, then reverse the HOT and NEUTRAL wires entering the boiler in the J-box.

•Restore POWER at service switch or breaker.

Is POWER light flashing now?

No

Yes

 

 

 

 

 

Have system checked by a

 

 

licensed electrician. If

 

 

problem persists, call your

Boiler should now

 

local Weil-McLain sales

operate normally.

 

representative.

 

 

 

Replace control module.

Retest.

•Reinstall 120 VAC transformer PRIMARY plug.

•Remove 24 VAC transformer plug (Figure 38, Item 5, page 50) on control module.

•Using voltmeter, check pins of plug.

Does voltmeter indicate 24 VAC?

No

 

Yes

 

 

 

 

 

 

 

 

 

 

Replace transformer.

 

 

 

Retest and check for back

 

 

 

feed of voltage from

 

Replace control module.

system wiring.

 

Retest.

Part Number 550-110-711/1108

51

 

Page 50 Page 52
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Weil-McLain CGI-4E manual 11c Troubleshooting control module lights, Chart 1 Troubleshooting Power light status
Page 50 Page 52

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.
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