Install boiler controls, Water boiler | Weil-McLain EG specification

3	EG, PEG, EGH GAS-FIRED BOILERS — SERIES 4 — BOILER MANUAL

Install boiler controls

Failure to properly install, pipe and wire boiler controls may result in severe damage to the boiler, building and personnel.

Water boiler

1.Install controls as shown on Control Tapping Table and Figure 3, page 6. Limit control and supply piping must be on the same end of EGH boiler.

2.Low water cut off for water boilers:

a)Must be installed if boiler is located above radiation level.

b)Must be installed on all EGH 105-125 water boilers to meet ASME specifications (low water cut-off not supplied by Weil-McLain).

c)May be required on water boilers by certain state, local or territorial codes or insurance companies. If a low water cut-off is used on a water boiler, use a control designed especially for water installations. An electrode probe type may be located in a tee in the supply line above boiler, also see Control Tapping Table, page 6.

3.If system is to be ASME inspected and approved, an additional high temperature limit is needed. Purchase and install in supply line above boiler.

Steam boiler

1.For steam boilers furnished with probe-type low water cut-offs, install as shown in Figure 17.

2.For steam boilers furnished with float type low water cut-off, install controls as illustrated in Figure 18.

Install blowdown line in bottom of cutoff. See Figure 19 and control manufacturer’s instructions for details.

Pipe blowdown line near floor close to floor drain to eliminate potential of severe burns. Do not plug, valve or place any obstruction in blowdown line.

a)Other float-type water-level controls for EGH steam boilers are shown in Figure 19. (Use 1 inch I.P.S. connections).

b)Water feeders are not recommended for primary control. A low-water cut-off with pump controller is recommended with a condensate receiver and feed pump.

3.Install remaining controls as shown in Control Tapping Table and Figure 3, page 6.

Figure 17 Probe-type low water cut-off

NOTE: Water line dimension measured from bottom of boiler section leg where it rests on the boiler room floor or boiler foundation.

Figure 18 Float-type low water cut-off

Figure 19 Piping for optional float-type water level controllers for steam boilers

12	Part Number 550-110-639/0703

EG specifications

The Weil-McLain EG Series is a notable line of cast iron, steam, and hot water boilers designed primarily for commercial and residential heating applications. Known for its robustness and efficiency, the EG boiler series has become a preferred choice for many heating professionals.

One of the main features of the Weil-McLain EG series is its durable cast iron construction. This material not only contributes to the longevity of the boiler but also ensures excellent heat retention and uniform heating. The boiler's heat exchanger is optimized to maximize thermal efficiency, delivering reliable and effective heating performance across various applications.

Another key aspect of the EG series is its heating capacity. Available in a range of sizes and outputs, the EG boiler provides flexibility, making it suitable for different heating needs. Whether it’s a small residential installation or a larger commercial system, the EG series offers models that can be tailored to meet specific load requirements.

Advanced technology is integrated into the Weil-McLain EG series to enhance efficiency and ease of use. One notable feature is its ability to operate with both gas and oil fuel types, enabling users to choose the most economical and accessible option for their needs. Additionally, the EG boilers come equipped with a reliable and intuitive control system that simplifies operation and maintenance tasks, allowing users to monitor performance easily.

The EG series also incorporates safety features, such as pressure relief valves and advanced combustion controls, which ensure safe and efficient operation. This attention to safety is essential in protecting both the system and the inhabitants of the building it serves.

Maintenance of the EG boiler is designed to be straightforward, with serviceability being a prominent focus in its design. The boiler's modular components can be accessed easily, significantly reducing downtime for repairs and maintenance.

In conclusion, the Weil-McLain EG series stands out for its reliable performance, efficiency, versatility, and robust construction. Its combination of advanced technology and user-friendly features makes it a leading choice for those seeking a dependable heating solution. Whether for residential or commercial applications, the EG series is engineered to deliver consistent heating while maximizing comfort and minimizing operating costs.