GAS-FIRED BOILER Boiler Manual
2
CONTENTS
Part 1 – Product and Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Part 2 – Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
A. What’s In The Box
B. How The Boiler Operates
C. Optional Equipment
Part 3 – Prepare Boiler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
A. Boiler Location Should Be Level
B. Installations Must Comply With:
C. Before Locating Boiler
D. Clearances for Service Access
E. Residential Garage Installation
F. Exhaust Vent and Intake Air Vent
G. Prevent Combustion Air Contamination
H. When Removing a Boiler from an Existing Common Vent System
Part 4 – Prepare Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
Part 5 – Boiler Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-23
A. Relief Valve
B. General Piping Information
C. Backflow Preventer
D. System Water Piping Methods
E. Circulators
F. Hydronic Piping with Circulators, Zone Valves and Multiple Boilers
G. Boiler Piping Details
H. Circulator Sizing
I. Fill and Purge Heating System
J Zoning with Zone Valves
K. Zoning with Circulators
L. Multiple Boilers
Part 6 – Venting, Combustion Air & Condensate Removal . . . . . . . . . . . . . . . . . . . . . 24-34
A. Installing Exhaust Vent and Intake Air Vent
B. General
C. Approved Materials for Exhaust Vent and Intake Air Vent
D. Exhaust Vent and Intake Air Vent Pipe Location
E. Exhaust Vent and Intake Air Vent Sizing
F. Longer Vent Runs
G. Exhaust Vent and Intake Air Pipe Installation
H. Heater Removal from a Common Vent System
I. Diagrams for Sidewall Venting
J. Diagram for Vertical Venting
Part 7 – Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-39
A. Gas Connection
B. Gas Piping
C. Gas Table
D. Check Inlet Gas Pressure
E. Dungs Gas Valve
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