START-UP PROCEDURES

7. START-UP PROCEDURES

A.COMPLETING THE INSTALLATION

1.Confirm that all water, gas and electricity are turned off.

2.Inspect the boiler combustion chamber for foreign objects and remove if present.

3.Check physical condition of burners and pilot. Make certain that there are no unusual bends or perforations in the burners or pilot. Replace components if necessary.

4.Verify that water piping, venting, gas piping and electrical wiring and components are installed properly. Refer back to previous sections of these instructions as well as equipment manufacturer’s instructions as necessary.

5.Fill the boiler and system with water, making certain to vent all air from all points in the system. To check water level in the system, open and close each vent in the system. Water should exit from each vent when it is opened.

6.The pressure reducing valve on the fill line will typically allow the system to be filled and pressurized to 12 psi (83 kPa). Consult the valve and expansion tank manufacturer for more specific information.

7.Check joints and fittings throughout the system for leaks. If leaks are found, drain the system and repair as required.

8.Connect a manometer to the gas valve on the valve outlet (gas manifold). Use the 1/8 NPT tapping provided.

9.Confirm that the gas supply pressure to the boiler is above the minimum and below the maximum values for the gas being used. See the end of Section 5 for these values. If a supply pressure check is required, isolate the boiler and gas valve before performing the pressure check. If the supply pressure is too high or too low, contact the gas supplier.

10.Turn on electricity and gas to boiler.

11.Light the boiler by following the Lighting/Operating Instructions label mounted to the jacket panel. The initial ignition may require several tries as the piping is purged of air.

12.Use the sequence descriptions in Figures 6.2, 6.3 and 6.4 in Section 6 (Electrical) to follow light-off and shutdown sequences and to assist in diagnosing problems. If the boiler does not function properly, consult Section 8, Troubleshooting.

13.The gas manifold and control assembly are made of gas-tight, completely factory assembled and installed components of the base assembly. See Figure 7.1 and 7.2.

21

Page 23
Image 23
PB Heat MI/MIH series manual START-UP Procedures, Completing the Installation

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.