Table of Contents
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1
INTRODUCTION .......................................................................................................................... IX
1.1
1.2
2
SITE PREPARATION .................................................................................................................... 2
2.1
2.2
2.3
2.4
Lifting .................................................................................................................................. 4
Foundation ......................................................................................................................... 6
Clearances ......................................................................................................................... 7
2.5
Applicable Codes and Standards ........................................................................................ 8
Combustion Air Inlet Planning (United States and Canada Considerations) ....................... 8
Category II/IV Flue Gas Exhaust Vent Planning ................................................................. 9
Venting Materials for Flue/Exhaust Systems ..................................................................... 11
Required Clearances ........................................................................................................ 13
2.6
2.7
3
INSTALLATION ........................................................................................................................... 15
3.1
............................................................................................................................. 15
3.2
Appliance Connections (ST-2500 & ST-3000) .................................................................. 16
Appliance Connections (ST-3500 & ST-4000) .................................................................. 17
Appliance Connections (ST-5000 - ST-8000) ................................................................... 18
3.3
Power Requirements ........................................................................................................ 19
Three Phase Power Supply Connection ........................................................................... 19
High Voltage (TB2) Terminal Block ................................................................................... 21
Low Voltage (TB1) Terminal Block .................................................................................... 23
3.4
Air Inlet Requirements - United States ............................................................................. 25
Air Inlet Requirements - Canada ....................................................................................... 26
Direct Vent / Sealed Combustion Installations .................................................................. 27
Motorized Combustion Air Dampers ................................................................................. 29
3.5
Category II or IV Venting Installation................................................................................. 32
Vent Termination ............................................................................................................... 34
Venting for Multiple Boilers................................................................................................ 35
Sealed Combustion/Direct Vent Systems .......................................................................... 36
Inlet Duct Connection to Boiler .......................................................................................... 41
Intake Duct Materials and Sizes ....................................................................................... 41
Category II Installations .................................................................................................... 41
Category IV Installations ................................................................................................... 42
Stainless Steel Venting ..................................................................................................... 42
CPVC Vent System Installation..................................................................................... 42
Released: February 2, 2024
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Combustion Air Requirements .................................................................... 27
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Installation and Owners Manual Rev G.docx
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