Weil-McLain CGA25SPDN instruction

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

11c Troubleshooting — spark-pilot boilers (continued)

CHART 4 — Spark-ignited pilot — DAMPER light flashing

— If POWER light is flashing: Usually indicates vent damper failed to prove open within 5 minutes —

— If POWER light is steady: Usually indicates vent damper closed during run cycle —

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. The TSTAT CIRC and LIMIT lights should come on.

Does vent damper operate?

• Wait 45 seconds.

Does vent damper operate?

Yes

No		Yes

•Remove DAMPER plug (Figure 30, Item 6, page 53) from plug receptacle of control module.

•Place voltmeter leads across the top two pins (1 and 4) of the DAMPER receptacle.

Does the voltmeter indicate 24 VAC?

No	Yes

• Try reseating plug in module receptacle and restart.

• If vent damper still does not work, replace vent damper assembly or actuator.

• Retest.

Are the TSTAT CIRC and LIMIT lights on steady?

Yes			No

•	Replace control	• Make sure thermostat is
		calling for heat. If lights
	module.
		still don't come on, see
•	Retest.
		Chart 7, page 59.

• Wait 5 minutes.

Is PRESS SWITCH light flashing?

No			Yes

	• Boiler should be in
	normal operating
	sequence.
	• Observe operation until	Does vent damper actuator
	thermostat is satisfied.	Does vent damper actuator
	thermostat is satisfied.	indicator show damper is
		open?
		open?

No		Yes

		•	Remove damper wiring
			plug at damper and firmly
•	Replace vent damper		reconnect.
	assembly or actuator.	•	Recheck boiler operation.
•	Retest.	•	If problem persists,
			replace vent damper
			assembly or actuator.

56	Part Number 550-101-009/0107

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.

Weil-McLain CGA25SPDN manual Chart 4 Spark-ignited pilot Damper light flashing

Models: CGA25SPDN