GOLD CGa Gas-Fired Water Boiler — Boiler Manual

8a Operation — standing pilot boilers

Follow all procedures given in this manual and light- ing instructions when operating the boiler. Failure to do so could result in severe personal injury, death or substantial property damage.

1.3TANDBYYMODE After pilot is manually lit, the gas valve provides pilot gas and maintains pilot as long as the thermocouple is satisfied. If ther- mocouple signal drops for any reason, pilot must be manually lighted, following the ,IGHTING )NSTRUCTIONS IN THIS MANUAL ANDNON BOILERL6ENT damper will remain closed.

2.#ALL FOR HEAT When thermostat circuit closes, the boiler circulator and vent damper are energized. The vent damper drives open. When the vent damper is fully open, its end switch energizes the main gas valve.

4HIS PROVIDESRGASVTO THE MAINGBURNERS "URNERS RE-

main ignited until thermostat circuit or limit circuit

OPENS "URNERSNANDNCIRCULATOR ARERDEENERGIZED WHEN CALL FOROHEAT STOPS "URNERSNARERDEENERGIZED RBUTU circulator remains on, if the limit circuit opens.

3.,IMITMOPERATION When a limit control opens, the main gas valve is de-energized, but circulator con- tinues to run. When the limit circuit closes again, the main gas valve is energized if there is still a call for heat.

4.4HERMOSTAT HEAT ANTICIPATOR Set heat anticipator as shown on wiring diagram, &IGURE .

Figure 23 Wiring diagram — Standing pilot system

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Part Number 550-101-009/0107

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Weil-McLain CGA25SPDN manual 8a Operation standing pilot boilers, Main ignited until thermostat circuit or limit circuit
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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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