GOLD CGi Gas-Fired Water Boiler — Boiler Manual

5 Gas piping

Connecting gas supply piping to boiler

1.Remove jacket front panel and refer to Figure 26 to pipe gas to boiler.

a.Install drip leg at inlet of gas connection to boiler. Where local utility requires drip leg to be extended to the floor, use appropri- ate length of pipe between cap and tee.

b.Install ground joint union for servicing, when required.

c.Install manual shutoff valve in gas supply piping outside boiler jacket when required by local codes or utility requirements.

d.In Canada — When using manual main shutoff valve, it must be identified by the installer.

2.Support piping with hangers, not by boiler or its accessories.

3.Purge all air from gas supply piping.

4.Before placing boiler in operation, check boiler and its gas connection for leaks.

a.Close manual main shutoff valve during any pressure testing at less than 13” w.c.

b.Disconnect boiler and gas valve from gas supply piping dur- ing any pressure testing greater than 13” w.c.

Do not check for gas leaks with an open flame

use bubble test. Failure to use bubble test or check for gas leaks can cause severe personal injury, death or substantial property damage.

5.Use pipe dope compatible with propane gases. Apply sparingly only to male threads of pipe joints so that pipe dope does not block gas flow.

Failure to apply pipe dope as detailed above can result in severe personal injury, death or substantial property damage.

Natural Gas:

1.Refer to Table 7 for pipe length and diameter. Base on rated boiler input (divide by 1,000 to obtain cubic

feet per hour). Table 7 is only for gas with specific gravity 0.60, with a pressure drop through the gas piping of 0.30” w.c. For additional gas pipe sizing information, refer to ANSI Z223.1 (or B149.1 or B149.2 for Canadian installations).

2.Inlet pressure required at gas valve inlet:

Maximum: 13” w.c.

Minimum: 5” w.c.

Manifold gas pressure: 3.5” w.c.

3.Install 100% lockup gas pressure regulator in supply line if inlet pressure exceeds 13” w.c. Adjust for 13” w.c. maximum.

Propane Gas:

1.Contact gas supplier to size pipes, tanks and 100% lockup gas pressure regulator.

2.Adjust propane supply regulator provided by gas supplier for 13” w.c. maximum pressure.

3.Inlet pressure required at gas valve inlet:

Maximum: 13” w.c.

Minimum: 11” w.c.

Manifold gas pressure: 10” w.c.

Table 7  Pipe capacity for 0.60 specific gravity natural gas

Figure 26  Gas supply piping

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Part Number 550-110-710/0107

 

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Weil-McLain Series 2 manual Gas piping, Connecting gas supply piping to boiler, Natural Gas, Propane Gas

Series 2 specifications

The Weil-McLain Series 2 is a highly regarded boiler system known for its robustness, efficiency, and ease of installation. Designed primarily for residential and light commercial applications, the Series 2 boasts a variety of features that cater to diverse heating needs.

One of the standout characteristics of the Series 2 is its cast iron construction, which provides durability and longevity. Cast iron is well-suited for heat retention, allowing the boiler to operate more efficiently and deliver consistent warmth. The Series 2 is available in multi-fuel options, accommodating both natural gas and propane, making it versatile for various installations.

Efficiency is a key feature of the Weil-McLain Series 2, with annual fuel utilization efficiency (AFUE) ratings that meet or exceed industry standards. This ensures that homeowners can enjoy not only a comfortable living environment but also reduced energy bills. The Series 2 is designed to provide optimal performance, minimizing fuel consumption while maximizing heat output.

Another innovative aspect of the Series 2 is its user-friendly control system. Equipped with advanced controls, the boiler allows for precise temperature management and can easily be integrated with existing heating systems. This adaptability is crucial for ensuring that the boiler matches the specific heating demands of any space, increasing overall comfort levels.

Installation is straightforward, thanks to the boiler's thoughtful design. The Series 2 features a compact footprint, allowing for flexible placement in various settings. Additionally, Weil-McLain provides comprehensive documentation and customer support, making it easier for technicians to install and maintain the system.

The Series 2 also includes features aimed at ease of maintenance. Its clean-out ports facilitate quick access for servicing, ensuring that the boiler remains in peak operating condition throughout its lifespan. Weil-McLain’s commitment to quality means users can expect reliable performance year after year.

Overall, the Weil-McLain Series 2 stands out as an excellent choice for those seeking a dependable, efficient, and straightforward heating solution. Its combination of durable construction, high efficiency, and user-centric design makes it a leading option in the boiler market, appealing to both homeowners and professionals alike. Whether for a new installation or a replacement, the Series 2 is poised to deliver exceptional heating performance.