GOLD CGa Gas-Fired Water Boiler — Boiler Manual

11c Troubleshooting — spark-pilot boilers (continued)

CHART 2 — Spark-ignited pilot — 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

3

 

 

 

 

 

 

 

 

 

DAMPER

Chart

 

 

 

light flashing

4

 

 

 

 

 

 

 

 

 

 

 

 

FLAME

Chart

Chart

 

light flashing

5

6

 

 

 

 

 

 

For insufficient heat or no heat problem, go to Chart 7, page 59, 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 30, Item 3, page 53) 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 transformer PRIMARY plug (Figure 30, Item 2, page 53) 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 electricain.

 

 

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 30, Item 5, page 53) on control module.

•Using voltmeter, check across pins of receptacle.

Does voltmeter indicate 120 VAC?

No

Yes

 

 

 

 

Replace transformer.

 

Replace control module.

Retest.

 

Retest.

 

 

 

54

Part Number 550-101-009/0107

Page 53 Page 55
Page 54
Image 54
Weil-McLain CGA25SPDN manual Tstat Circ
Page 53 Page 55

CGA25SPDN specifications

The Weil-McLain CGA25SPDN is a high-efficiency gas-fired boiler designed to deliver dependable heating performance while maintaining a strong focus on energy savings and user-friendly operation. Ideal for residential applications, this boiler is engineered to provide consistent warmth and comfort in homes with various heating demands.

One of the main features of the CGA25SPDN is its durable construction. Built with high-quality materials, this boiler is designed to withstand the rigors of frequent operation while maximizing longevity. It features an advanced cast iron heat exchanger that efficiently transfers heat to the water, resulting in lower energy costs and improved overall performance.

Efficiency is a key characteristic of the Weil-McLain CGA25SPDN. Its design promotes efficient combustion, allowing for a higher Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE rating of up to 82%, this boiler ensures that more of the fuel used is converted into usable heat, which translates to reduced energy bills for homeowners.

The boiler exhibits a user-friendly control system that allows for easy operation and maintenance. It comes equipped with an integrated vent damper that maximizes efficiency by reducing heat loss during standby periods. Additionally, the CGA25SPDN features an adjustable thermostat, enabling homeowners to customize their heating preferences easily.

Another significant feature of the CGA25SPDN is its versatility. The boiler is compatible with various heating applications, including hot water heating systems and home heating configurations. This adaptability makes it a great choice for both new installations and retrofitting existing systems.

Safety is always a concern with gas-fired appliances, and the Weil-McLain CGA25SPDN addresses this through its advanced safety mechanisms. The boiler incorporates safety controls that prevent overheating and ensure proper operation, providing peace of mind to homeowners.

In summary, the Weil-McLain CGA25SPDN stands out as a reliable and efficient heating solution for residential settings. With its durable construction, high-efficiency performance, user-friendly controls, and impressive safety features, it is an exceptional choice for those seeking a dependable gas-fired boiler that meets modern heating demands while keeping energy costs in check. Homeowners can trust the Weil-McLain CGA25SPDN for warmth and comfort through the cold months.
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