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100221773_2000189439_Rev. 01
TABLE OF CONTENTS
Safe Installation, Use And Service . . . . . . . . . . . . . . . . 3
General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Qualified Installer Or Service Agency . . . . . . . . . . . . 6
Preparing For The Installation . . . . . . . . . . . . . . . . . . 6
Installation Requirements For The
Commonwealth Of Massachusetts. . . . . . . . . . . . . . . . 7
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Get To Know Your Water Heater - Gas Models
(List Referencing Figures 1-7). . . . . . . . . . . . . . . . . . 9
Replacement Parts And Deliming Products . . . . . . 10
Combo Heating Inlet And Outlet Side Taps. . . . . . . 10
Water Piping - Mixing Valve Usage . . . . . . . . . . . . . .11
Mixing Valves
Water Heater Operation . . . . . . . . . . . . . . . . . . . . . 12
Electrical Requirements & Wiring Diagram . . . . . . . 13
Safety Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
High Limit Controls (Energy Cut Off). . . . . . . . . . . . 14
Thermostat/Water Temperature
Blower High Limit Switch
Blower Air Pressure Switch . . . . . . . . . . . . . . . . . . . 14
Flammable Vapor Sensor . . . . . . . . . . . . . . . . . . . . 14
Locating The New Water Heater . . . . . . . . . . . . . . . . 15
Facts To Consider About The Location . . . . . . . . . . 15
Storage Of Flammable Liquids . . . . . . . . . . . . . . . . 15
Clearances to combustibles
Floors with carpeting
Clearance for servicing
Insulation jackets and Blankets. . . . . . . . . . . . . . . . 17
Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Unconfined Space. . . . . . . . . . . . . . . . . . . . . . . . . . 17
Unusually Tight Construction . . . . . . . . . . . . . . . . . 17
Confined Space. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Direct Vent Appliances . . . . . . . . . . . . . . . . . . . . . . 18
Exhaust Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Fresh Air Openings For Confined Spaces. . . . . . . . 18
Chemical Vapor Corrosion . . . . . . . . . . . . . . . . . . . 19
Installing The New Water Heater . . . . . . . . . . . . . . . . 20
Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Space Heating And Potable Water Systems . . . . . . 20
Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
System Requirements
Installation
Closed Water Systems . . . . . . . . . . . . . . . . . . . . . . 22
Recirculation Loops. . . . . . . . . . . . . . . . . . . . . . . . . 22
Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . 22
Temperature-Pressure Relief Valve. . . . . . . . . . . . . 23
T&P valve discharge pipe requirements:
Temperature-Pressure Relief Valve and Pipe
Insulation
High Altitude Installation . . . . . . . . . . . . . . . . . . . . . 24
Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Sediment Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Filling The Water Heater . . . . . . . . . . . . . . . . . . . . . 26
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Termination Clearances Sidewall Power Vent. . . . . 27
Blower Assembly Installation. . . . . . . . . . . . . . . . . . 28
Installation Of Vent System . . . . . . . . . . . . . . . . . . . 28
Planning The Vent System . . . . . . . . . . . . . . . . . . . 28
Polypropylene Vent Systems . . . . . . . . . . . . . . . . . 29
Condensate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Exhaust Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Important Notes and Warnings
Venting terminations and sizing
Vent screen installation
Calculating Equivalent Feet
Venting instructions
Vent pipe connection to blower
Coupling installations according to vent sizes
Blower Exhaust Direction . . . . . . . . . . . . . . . . . . . . 34
Vent Pipe Preparation . . . . . . . . . . . . . . . . . . . . . . . 34
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . 37
Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Operating The Temperature Control System . . . . . . . 39
Gas Control Valve/Thermostat (160°) . . . . . . . . . . . 40
Gas Control Valve/Thermostat (181°) . . . . . . . . . . . 40
For Your Information. . . . . . . . . . . . . . . . . . . . . . . . . . 41
Start Up Conditions . . . . . . . . . . . . . . . . . . . . . . . . . 41
Condensate
Smoke/Odor
Strange sounds
Operational Conditions . . . . . . . . . . . . . . . . . . . . . . 41
Smelly water
“Air” In Hot-Water Faucets . . . . . . . . . . . . . . . . . . . 41
Periodic Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 42
General Upkeep . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Venting System Inspection . . . . . . . . . . . . . . . . . . . 42
Blower Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 42
Cleaning The Blower. . . . . . . . . . . . . . . . . . . . . . . . 42
Burner Operation And Inspection . . . . . . . . . . . . . . 43
Combustion Chamber And Burner Cleaning . . . . . . 44
Housekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Anode Rod Maintenance. . . . . . . . . . . . . . . . . . . . . 44
Temperature-Pressure Relief Valve Test . . . . . . . . . 45
Draining And Flushing . . . . . . . . . . . . . . . . . . . . . . . 46
To Drain The Water Heater Storage Tank
To Flush The Water Heater Storage Tank
Leakage Checkpoints. . . . . . . . . . . . . . . . . . . . . . . . . 47
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Reference Parts Listing . . . . . . . . . . . . . . . . . . . . . . . 48
Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . 50
Resetting The Heater Control . . . . . . . . . . . . . . . . . 52
Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Soft Lockout
Hard Lockout
Ignition State And Timing . . . . . . . . . . . . . . . . . . . . 53
System Status And Error Codes . . . . . . . . . . . . . . . 53
Reading The LED Flash Sequence. . . . . . . . . . . . . 54
