WATER PIPING AND CONTROLS

3. WATER PIPING AND CONTROLS

A.BOILER SUPPLY AND RETURN

1.Size the supply and return to suit the system. A typical piping arrangement is shown in Figure 3.1. Refer also to the I=B=R Guide - Residential Hydronic Heating Installation/Design and the PB Heat Water Survey for additional guidance during water piping installation.

2.Return Piping:

Pipe the drain valve to a tee, provided, and the

1-1/4 NPT return tapping near the bottom of the left section. Pipe the return to the tee. Pipe the drain valve nipples and tee to the 1-1/4 NPT return tapping as shown in Figure 3.1.

3.Supply Piping:

Pipe the supply to the 1-1/2 NPT supply tapping at the top and rear of the boiler.

4.When system return water temperature will be below 130°F (54°C), pipe the boiler with a bypass arrangement to blend the system return and hot supply to obtain at least 130°F (54°C) entering the boiler. For more information on bypass piping, consult the PB Heat Water Survey.

Figure 3.1: Supply and Return Piping

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PB Heat MI/MIH series manual Water Piping and Controls, Boiler Supply and Return

MI/MIH series specifications

The PB Heat MI/MIH series represents a significant advancement in the realm of cast iron boilers, engineered for high efficiency and reliable performance in both residential and light commercial applications. Crafted with exceptional care, these boilers combine traditional design elements with modern technologies to optimize heating capabilities.

A standout feature of the MI/MIH series is its construction. Made from high-quality cast iron, the boiler body is built to withstand the test of time while providing superior heat retention. This material ensures consistent heating over extended periods, reducing the need for frequent cycling on and off, which enhances overall efficiency.

The MI/MIH series incorporates a versatile design that accommodates various heating systems, including hot water heating and steam applications. This flexibility is a key selling point, as it allows homeowners and business operators to tailor their heating solutions to specific needs. Additionally, the units are compatible with multiple fuels, including oil and natural gas, making them a practical option for diverse environments.

Efficiency is another critical component of the MI/MIH series. The boilers are designed to operate at high efficiency levels, often surpassing industry standards. Many models in this series feature advanced combustion technology that maximizes fuel use while minimizing emissions. This not only supports environmental sustainability but also results in lower utility bills for consumers.

The MIH variant, specifically, offers additional features like an integrated secondary heat exchanger, which enhances heat transfer and further improves efficiency. Maintenance is made simple, thanks to thoughtful engineering. With large clean-out ports and easily accessible components, routine maintenance can be performed with ease, reducing downtime and extending the boiler's lifecycle.

Moreover, safety is a fundamental aspect of the MI/MIH series. These boilers include multiple safety features, such as automatic safety shutdown systems and built-in pressure controls, ensuring safe operation under various conditions.

In summary, the PB Heat MI/MIH series cast iron boilers stand out due to their durability, versatility, high efficiency, and robust safety features. These models cater to a range of heating requirements, making them a reliable choice for those seeking long-term heating solutions that prioritize both performance and sustainability. As homeowners and businesses look for dependable and efficient heating options, the MI/MIH series remains a prominent player in the industry.