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GAS-FIRED HEATER Installation Manual
CONTENTS
Part 1 – Product and Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5
Part 2 – How The Heater Operates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Part 3 – Prepare Heater Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
A. Installations Must Comply With:
B. Before Locating Heater
C. Clearances for Service Access
D. Residential Garage Installation
E. Air Intake and Exhaust Vent
F. Prevent Combustion Air Contamination
G. When Removing an Appliance from an Existing Common Vent System
Part 4 – Prepare Munchkin Contender Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
A. Remove Munchkin Contender Heater from Box
B. Placing Wall-Mounted Munchkin Contender
C. Munchkin Contender Wall Mounting Instruction
D. Installation Steps
Part 5 – Munchkin Contender Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-24
– Contender Piping Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-24
A. Relief Valve
B. General Piping Information
C. Separate Low Water Cutoff
D. Backflow Preventer
E. System Water Piping Methods
F. Circulators
G. Hydronic Piping with Circulators, Zone Valves and Multiple Heaters
H. Circulator Sizing
I. Fill and Purge Heating System
J. Zoning with Zone Valves
K. Zoning with Circulators
L. Multiple Heaters
M. Contender Piping Details
Part 6 – Contender Piping with Optional Vision 1 System . . . . . . . . . . . . . . . . . . . . . 25-35
– Contender Piping Details With Vision I System . . . . . . . . . . . . . . . . . . . . . . . . . . 26-35
A. Vision 1 System Piping
B. Zoning with Zone Valves Using Vision I
C. Zoning with Circulators Using Vision I
D. Contender Piping Details with the Vision I System
Part 7 – Venting Combustion Air And Condensate Removal. . . . . . . . . . . . . . . . . . . . 36-44
– Venting Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43,44
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