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FORCED DRAFT Gas-Fired Boiler Table of Contents
3.6.6 Vent Terminations...............................12
1.0 INTRODUCTION ........................................2
3.6.7 Venting for Multiple Boilers .................13
2.0 SAFETY......................................................2
3.6.8 Removing an Existing Boiler ...............13
2.1 General ....................................................... 2
3.7 Gas Piping.................................................14
2.2 Training ....................................................... 2
3.8 Boiler Water Piping....................................15
2.3 Safety Features .......................................... 2
3.8.1 Piping Design......................................15
2.4 Safety Labels .............................................. 3
3.8.2 Boiler Water Connections ...................16
2.5 Safety Precautions...................................... 3
3.8.3 Boiler Water Piping by Installer...........16
2.5.1 Electrical Hazards................................. 3
3.8.4 Flushing and Filling .............................16
2.5.2 Burn, Fire, and Explosion Hazards....... 3
3.8.5 Water Quality ......................................17
2.5.3 Crush Hazards...................................... 4
3.9 Burner and Ignition System.......................17
2.5.4 Chemical Hazards ................................ 5
3.9.1 Inspection............................................17
2.5.5 Pressure Hazards................................. 5
3.10 Pre-Start Check List ................................17
2.5.6 Slip, Fall Hazards ................................. 5
3.11 Safety Checks .........................................18
3.0 INSTALLATION ..........................................6
3.11.1 Test of Ignition Safety System ..........18
3.1 Receiving and Storage ............................... 6
3.11.2 Test of Low Water Cut-off .................18
3.1.1 Initial Inspection.................................... 6
3.11.3 Test of Limit Controls ........................18
3.1.2 Storage Prior to Installation .................. 6
3.11.4 Test of Low Gas Pressure Switch.....18
3.2 Compliance with Codes .............................. 6
3.11.5 Test of High Gas Pressure Switch....19
3.3 Setup........................................................... 6
3.12 Initial Adjustments ...................................19
3.3.1 Foundation............................................ 6
3.12.1 Configuring the Temperature Control19
3.3.2 Placement............................................. 6
3.12.2 Air Flow Adjustment ..........................21
3.3.3 Installation Clearances ......................... 7
3.12.3 Fuel/Air Ratio Adjustment .................21
3.4 Electrical Connections ................................ 7
4.0 OPERATION ...........................................22
3.5 Combustion Air ........................................... 9
4.1 General......................................................22
3.5.1 Sealed Combustion .............................. 9
4.1.1 Normal Operation.................................22
3.5.2 Intake Duct Materials and Sizes......... 10
4.2 Lighting and Shut-Down Procedures ........22
3.5.3 Sealing the Intake Duct ...................... 10
4.2.1 Initial Lighting Procedures...................22
3.5.4 Intake Duct Connection to Boiler........ 10
4.2.2 Normal Shut Off Procedures................23
3.5.5 Intake/Exhaust Layout........................ 10
4.2.3 Emergency Shut Off Procedures .........23
3.6 Venting (Stack) ......................................... 10
4.3 Typical Boiler Operating Conditions..........23
3.6.1 Vent Components............................... 11
5.0 MAINTENANCE ......................................24
3.6.2 Barometric Damper ............................ 11
5.1 Maintenance and Inspection Schedule .....24
3.6.3 Automatic Vent Damper ..................... 11
5.1.1 Daily ....................................................24
3.6.4 Flue Connection ................................. 11
5.1.2 Weekly ................................................24
3.6.5 Clearances ......................................... 11