Giant UG40 User Manual

2
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
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Get To Know Your Water Heater - Gas Models
(List Referencing Figures 1-5). . . . . . . . . . . . . . . . . . . 7
Replacement Parts And Deliming Products . . . . . . . . 8
Combo Heating Inlet And Outlet Side Taps. . . . . . . . . 8
Water Piping - Mixing Valve Usage . . . . . . . . . . . . . . . 9
Mixing Valves
Water Heater Operation . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Requirements & Wiring Diagram . . . . . . . . 10
Safety Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
High Limit Controls (Energy Cut Off). . . . . . . . . . . . . 11
Thermostat/Water Temperature
Blower High Limit Switch
Blower Air Pressure Switches . . . . . . . . . . . . . . . . . . 11
Locating The New Water Heater . . . . . . . . . . . . . . . . . 11
Facts To Consider About The Location . . . . . . . . . . . 11
Clearances To Combustibles
Floors With Carpeting
Clearances For Servicing
High Ambient Temperature Installations . . . . . . . . . . 12
Important Notes and Warnings
Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installing The New Water Heater . . . . . . . . . . . . . . . . . 14
Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Space Heating And Potable Water Systems. . . . . . . 14
Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
System Requirements
Installation
Closed Water Systems . . . . . . . . . . . . . . . . . . . . . . . 16
Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Temperature-Pressure Relief Valve. . . . . . . . . . . . . . 17
T&P Valve Discharge Pipe Requirements:
Temperature-Pressure Relief Valve And Pipe
Insulation
High Altitude Installation . . . . . . . . . . . . . . . . . . . . . . 18
Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Sediment Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Filling The Water Heater . . . . . . . . . . . . . . . . . . . . . . 20
Termination Clearances (Side Wall) . . . . . . . . . . . . . 21
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Side Wall Vent Terminal Installation
Side Wall Vent For Cold Climates
Tee Termination Installation
Roof Vent Terminal Installation
Concentric Vent Termination Installation
Multiple Concentric Vent Installation
Vent Pipe Material
Polypropylene Vent Systems
Vent Pipe Length And Sizing
Vent Screens
Vent Pipe Installation
Vent Pipe Runs
Vent Terminal Installations
Blower Assembly Installation. . . . . . . . . . . . . . . . . . . 30
Connections To The Blower And Air Duct
Condensate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Sound Suppressor (Optional) . . . . . . . . . . . . . . . . . . 32
Sound Suppressor At Blower
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . 33
Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Operating The Temperature Control System . . . . . . . . 35
Gas Control Valve/Thermostat . . . . . . . . . . . . . . . . . 36
For Your Information. . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Start Up Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condensation
Smoke/Odour
Strange Sounds
Operational Conditions . . . . . . . . . . . . . . . . . . . . . . . 37
Smelly Water
“Air” In Hot-Water Faucets . . . . . . . . . . . . . . . . . . . . 37
Periodic Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . 38
General Upkeep . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Venting System Inspection . . . . . . . . . . . . . . . . . . . . 38
Burner Operation And Inspection . . . . . . . . . . . . . . . 38
Combustion Chamber And Burner Cleaning . . . . . . . 39
Housekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Temperature-Pressure Relief Valve Test. . . . . . . . . . 39
Draining And Flushing . . . . . . . . . . . . . . . . . . . . . . . . 40
To Drain The Water Heater Storage Tank
To Flush The Water Heater Storage Tank
Anode Rod Maintenance. . . . . . . . . . . . . . . . . . . . . . 41
Leakage Checkpoints. . . . . . . . . . . . . . . . . . . . . . . . . . 42
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Reference Parts Listing . . . . . . . . . . . . . . . . . . . . . . . . 43
Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . 45
Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Soft Lockout
Hard Lockout
Resetting The Heater Control . . . . . . . . . . . . . . . . . . 45
System Status And Error Codes . . . . . . . . . . . . . . . . 46
Reading The LED Flash Sequence. . . . . . . . . . . . . . 46
Other Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Giant UG40 Specifications

General

Brand	Giant
Model	UG40
Category	Water Heater
Language	English