Table of Contents
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HAZARD DEFINITIONS .................................................. 2
PLEASE READ BEFORE PROCEEDING ..................... 3
RATINGS .......................................................................... 6
Provide Clearances ............................................................ 7
Provide Air Openings to Room .......................................... 9
Flooring and Foundation ................................................... 9
Residential Garage Installation .......................................... 9
Vent and Air Piping ............................................................ 9
Prevent Combustion Air Contamination ............................. 9
Corrosive Contaminants and Sources ............................. 10
Heater ............................................................................... 10
Remove Water Heater from Wood Pallet ........................ 12
Gas Conversions ......................................................... 12-13
Direct Venting Options ..................................................... 14
Install Vent and Combustion Air Piping ........................... 15
Requirements for Installation in Canada .......................... 16
Sizing ............................................................................... 16
Min./Max. Combustion Air & Vent Piping Lengths ............ 16
Materials ............................................................................ 17
Optional Room Air ............................................................ 18
PVC/CPVC ....................................................................... 18
Polypropylene ................................................................... 20
Stainless Steel Vent ......................................................... 21
Vent/Air Termination - Sidewall ................................... 22-31
Determine Location ................................................ 22-27
Prepare Wall Penetrations .......................................... 27
Multiple Vent/Air Terminations ......................................... 28
Sidewall Termination - Optional Concentric Vent ....... 29-31
Vent/Air Termination - Vertical .................................... 32-33
Determine Location ..................................................... 32
Prepare Roof Penetrations ......................................... 33
Multiple Vent/Air Terminations .................................... 33
Alternate Vertical Concentric Venting .................... 36-37
Hazard definitions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
DANGER
⚠
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
WARNING
⚠
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
CAUTION
⚠
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
CAUTION
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
NOTICE
related to personal injury or property damage.
2
Contents
Outdoor Venting .......................................................... 38-39
Outdoor Vent / Air Inlet Location ................................. 38-39
Location of Unit ................................................................ 38
System Water Piping Methods ......................................... 40
Scalding ............................................................................ 40
Water Chemistry............................................................... 40
Piping Components .......................................................... 41
Connecting Gas Supply Piping ........................................ 47
Natural Gas ...................................................................... 48
Pipe Sizing for Natural Gas ........................................ 48
Natural Gas Supply Pressure Requirements ............. 48
Propane Gas .................................................................... 48
Pipe Sizing for Propane Gas ...................................... 48
Propane Supply Pressure Requirements ................... 48
Check Inlet Gas Supply ................................................... 49
Gas Pressure ................................................................... 50
Gas Valve Replacement .................................................. 50
Line Voltage Connections ................................................ 51
Low Voltage Connections ................................................ 51
Wiring of the Cascade ...................................................... 53
Condensate Drain ............................................................ 55
11. START-UP ............................................................ 56-62
General ............................................................................. 63
Cascade ........................................................................... 65
Sequence of Operation .................................................... 66
Armor Water Heater Control Module ............................... 67
Maintenance & Annual Startup ................................... 68-72
Ladder Diagram ............................................................... 73
Wiring Diagram................................................................. 74
Revision Notes .................................................. Back Cover
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