PB Heat MI/MIH series manual MIH Boiler Natural Gas

Page 17

GAS PIPING

Table 5.1: MI Boiler – Natural Gas

Model

Input

 

 

Cubic Feet / Hour

Cubic Meters / Hour

 

 

 

 

MI-03

70

2.0

 

 

 

MI-04

105

3.0

 

 

 

MI-05

140

4.0

 

 

 

MI-06

175

5.0

 

 

 

MI-07

195

5.5

 

 

 

MI-08

227.5

6.4

 

 

 

MI-09

260

7.4

 

 

 

Table 5.2: MI Boiler – LP Gas

Model

Input

 

 

Cubic Feet / Hour

Cubic Meters / Hour

 

 

 

 

MI-03

28

0.8

 

 

 

MI-04

42

1.2

 

 

 

MI-05

56

1.6

 

 

 

MI-06

70

2.0

 

 

 

MI-07

78

2.2

 

 

 

MI-08

91

2.6

 

 

 

MI-09

104

2.9

 

 

 

Table 5.3: MIH Boiler – Natural Gas

Model

Input

 

 

Cubic Feet / Hour

Cubic Meters / Hour

 

 

 

 

MIH-03

65

1.8

 

 

 

MIH-04

97.5

2.8

 

 

 

MIH-05

130

3.7

 

 

 

MIH-06

162.5

4.6

 

 

 

Table 5.4: Pipe Capacity

Capacity of pipe of different diameters and lengths in cubic feet per hour [cubic meter per hour] with a pressure drop of 0.3 inches of water (75 Pa) and specific gravity of 0.60. No allowance for an ordinary number of fittings is required.

Pipe

 

 

 

 

Length in

3/4"

1"

1-1/4"

1-1/2"

Feet

Pipe

Pipe

Pipe

Pipe

[Meters]

 

 

 

 

 

 

 

 

 

10 [3.0]

278 [7.9]

520 [14.7]

1050 [29.7]

1600 [45.3]

 

 

 

 

 

20 [6.1]

190 [5.4]

350 [9.9]

730 [20.7]

1100 [31.1]

 

 

 

 

 

30 [9.1]

152 [4.3]

285 [8.1]

590 [16.7]

890 [25.2]

 

 

 

 

 

40 [12.2]

130 [3.7]

245 [6.9]

500 [14.2]

760 [21.5]

 

 

 

 

 

50 [15.2]

115 [3.3]

215 [6.1]

440 [12.5]

670 [19.0]

 

 

 

 

 

60 [18.3]

105 [3.0]

195 [5.5]

400 [11.3]

610 [17.3]

 

 

 

 

 

Maximum Capacity Correction Factors for Specific Gravity other than 0.60.

Specific Gravity

0.50

0.55

0.60

0.65

0.70

0.75

Correction Factor

1.10

1.04

1.00

0.96

0.93

0.90

 

 

 

 

 

 

 

Specific Gravity

0.80

0.85

0.90

1.00

1.10

1.20

Correction Factor

0.87

0.84

0.82

0.78

0.74

0.71

 

 

 

 

 

 

 

Specific Gravity

1.30

1.40

1.50

1.60

1.70

1.80

Correction Factor

0.68

0.66

0.63

0.61

0.59

0.58

 

 

 

 

 

 

 

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Contents Series MI/MIH Table of Contents Special Attention Boxes Using this ManualInstallation Sequence Accessibility Clearances PreinstallationClearance from Combustible Construction AIR for Combustion and VentilationAir Openings All Air from Indoors on Different Floors Air Openings All Air from Outdoors through Vertical Ducts Planning the Layout Installation SurveyBoiler SET-UP Boiler Supply and Return Water Piping and ControlsParallel Hook-Up with Water Chiller Safety Relief ValveZone Piping with Zone Valves Piping for Zoned SystemsFreeze Protection Expansion TankINDIRECT-FIRED Water Heater Integral Draft Hood Vent Damper Installation GeneralVenting Venting with Vent Damper in Vertical Position Vent Piping and ChimneySeal any unused openings in the common venting system Boiler Removal from Common Venting SystemGas Connection to Boiler GAS PipingMIH Boiler Natural Gas Electrical Wiring ControlsZoned System Wiring Sequence of Operation Wiring and Connection Diagram Intermittent Ignition Intermittent Ignition System Operating Sequence Zone Wiring with Zone Valves Completing the Installation START-UP ProceduresValve Tapping and Adjustment Screw Locations Operating Instructions For Your Safety Read Before Lighting Control Descriptions Adjustment of GAS Pressure RegulatorAdjustment of Pilot GAS Flow Checking Burner Input CHECK-OUT ProcedureSTART-UP Procedures Troubleshooting Guides TroubleshootingProblem Possible Causes Corrective Actions Intermittent Ignition System Troubleshooting Sequence Maintenance Daily with Boiler in USE GeneralWeekly with Boiler in USE Monthly with Boiler in USEStanding Pilot and Main Burner Flame Annually Before Start of Heating SeasonSeries MI/MIH Boiler Dimensions Boiler Dimensions & RatingsRepair Parts Series MI/MIH GAS Boiler Repair Parts2Manifold Manifold/Gas Train MI Standing Pilot 3b Gas Valve and Pilot Intermittent 4Block/Draft Hood 4a Block/Draft Hood 5Jacket 6Controls/Circulator/Vent Damper Series MI/MIH

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.