GOLD CGa Gas-Fired Water Boiler — Boiler Manual

3b Water piping — single-zone system

Undersized expansion tanks cause system water to be lost from relief valve and makeup water to be added through fill valve. Eventual section failure can result.

Diaphragm-type or bladder- type expansion tank (Figure 9)

1.Ensure expansion tank size will handle boiler and system water volume and temperature. Tank must be located in boiler return piping as close to boiler as possible, before inlet side of circulator. See tank manufacturer’s instructions for details.

2.Install an AUTOMATICMAIRTVENT as shown.

Closed-type expansion tank

(Figure 10)

1.Ensure expansion tank size will handle boiler and system water volume and temperature. See tank manufacturer’s instructions for details.

 #ONNECTNTANK TO v .040TAPPINGPLOCATEDABEHIND SUPPLY OUTLET L USINGI v .040 PIPINGI 0ITCHT ANY horizontal piping up towards tank 1 inch per 5 feet of piping.

Use &IGURE  or &IGURE  only for single-zone systems designed for RETURN WATERTAT LEASTA —& For systems with low return water temperature possible, such as converted gravity systems and radiant heating systems, refer to the special piping suggestions of pages 20-25. Failure to prevent low return water temperature to the boiler could cause corrosion of the boiler sections or burners, resulting in severe personal injury, death or substantial property damage.

&IGURE 

Diaphragm- or bladder-type expansion

&IGURE R Closed-type expansion tank — Single-

 

tank — Single-zone system using dia-

zone system using closed-type expan-

 

phragm-type or bladder-type expansion

sion tank. See Table 3 for piping sizes.

 

tank. See Table 3 for piping sizes.

 

Part Number 550-101-009/0107

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Weil-McLain CGA25SPDN manual 3b Water piping single-zone system, Diaphragm-type or bladder- type expansion tank Figure
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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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