Installation manual

2
GAS-FIRED HOT WATER SUPPLY BOILER Boiler Manual
CONTENTS
Part 1 – Product and Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Part 2 – Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Mod Con Recovery Ratings
Mod Con VWH Recovery Ratings with Storage Tanks
A. What’s In The Box
B. How The Boiler Operates
C. Optional Equipment
Part 3 – Prepare Boiler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
A. Boiler Location / Dimensions
B. Installations Must Comply With:
C. Before Locating the Boiler
D. Clearances for Service Access
E. Exhaust Vent and Intake Air Vent
F. Prevent Combustion Air Contamination
G. When Removing a Boiler from an Existing Common Vent System
Part 4 – Prepare Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-14
Part 5 – Boiler Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-27
A. Relief Valve
B. General Piping Information
C. System Water Piping Methods
D. Circulator Pumps
E. Installation of Flow Switch
F. Scalding
G. High Velocity Circulator Pump
H. Boiler Piping Details
Part 6 – Venting, Combustion Air & Condensate Removal . . . . . . . . . . . . . . . . . . . . . . 28-38
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-43
A. Gas Connection
B. Gas Piping
C. Gas Table
D. Check Inlet Gas Pressure
E. Dungs Gas Valve