QHT
B3-B9
installation instructions
Install
Boiler Tapping Diagram
Wiring
Maintenance
Burner Setup
Boiler Block Assembly
Safety
Switch Gas systems only
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Contents
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Manufactured by Biasi S.p.A Verona, Italy Distributed By
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Table of Contents
Please read this page carefully
Important Information
Page
To Start UP the Appliance
Homeowner Information for Gas
Gas systems only
General Information
Trim Kit Components
Do not Over Tighten Draw Rods
Boiler Block Assembly
Boiler Location
Switch Gas systems only
Installation of Boiler Trim Components
Boiler Tapping Diagram
Installation of Boiler Trim Components
Piping the Boiler
Safety Relief Valve
Intake Venting
Figure a
Common Exhaust Venting
Exhaust Venting
Blocked Flue Switch
Gas Venting
Gas
Burner Setup
Oil
Burner Manufacturer
Oil Burner Setup
Gas Burner Setup
Gas Line Piping
Installation of Sediment Trap and Burner Supply
Boiler Jacket Assembly
Wiring
7248U Wiring Procedure
Oil Burner Wiring
Riello OIL BURNER, SR504, Control Wiring with DHW Priority
Riello OIL BURNER, AZ-4P, Control Wiring with DHW Priority
Carlin OIL BURNER, SR501, Control Wiring with DHW Priority
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Heatwise SU-2A, SR503, Control Wiring with DHW Priority
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Commissioning
Maintenance
System Checkout
Installer Notes
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Contents