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Intermittent Ignition System Operating Sequence
Models:
MI
MIH
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Troubleshooting
Install
Repair Parts
Wiring Controls
Dimension
Maintenance
Accessibility Clearances
START-UP Procedures
Adjustment of Pilot GAS Flow
Safety
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ELECTRICAL
Figure 6.4: Intermittent Ignition System Operating Sequence
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Contents
Series MI/MIH
Table of Contents
Using this Manual
Installation Sequence
Special Attention Boxes
Accessibility Clearances
Preinstallation
Clearance from Combustible Construction
AIR for Combustion and Ventilation
Air Openings All Air from Indoors on Different Floors
Air Openings All Air from Outdoors through Vertical Ducts
Planning the Layout
Installation Survey
Boiler SET-UP
Boiler Supply and Return
Water Piping and Controls
Parallel Hook-Up with Water Chiller
Safety Relief Valve
Zone Piping with Zone Valves
Piping for Zoned Systems
Expansion Tank
INDIRECT-FIRED Water Heater
Freeze Protection
Vent Damper Installation General
Venting
Integral Draft Hood
Venting with Vent Damper in Vertical Position
Vent Piping and Chimney
Seal any unused openings in the common venting system
Boiler Removal from Common Venting System
Gas Connection to Boiler
GAS Piping
MIH Boiler Natural Gas
Wiring Controls
Zoned System Wiring
Electrical
Sequence of Operation
Wiring and Connection Diagram Intermittent Ignition
Intermittent Ignition System Operating Sequence
Zone Wiring with Zone Valves
Completing the Installation
START-UP Procedures
Valve Tapping and Adjustment Screw Locations
Operating Instructions
For Your Safety Read Before Lighting
Adjustment of GAS Pressure Regulator
Adjustment of Pilot GAS Flow
Control Descriptions
Checking Burner Input
CHECK-OUT Procedure
START-UP Procedures
Troubleshooting Guides
Troubleshooting
Problem Possible Causes Corrective Actions
Intermittent Ignition System Troubleshooting Sequence
Maintenance
Daily with Boiler in USE
General
Weekly with Boiler in USE
Monthly with Boiler in USE
Standing Pilot and Main Burner Flame
Annually Before Start of Heating Season
Series MI/MIH Boiler Dimensions
Boiler Dimensions & Ratings
Repair Parts Series MI/MIH GAS Boiler
Repair Parts
2Manifold 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
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Contents