GSW 72090 User Manual
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TABLE OF CONTENTS
I) INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
User Responsibilities
4
II) SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
For Installations in Canada
4
For Installations in the United States
4
Safety Warning (Flammable Vapours)
5
Safety Warning (Scalding)
5
Safety Warning (Carbon Monoxide)
5
Relief Valves (T&P)
5
Backflow Prevention
5
III) INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unpacking the Water Heater
6
Location Requirements
6
In Earthquake Zones
Clearances and Accessibility
6
Gas Supply
7
Gas Pressure
Gas line purging
Gas Leak Testing
Air Requirements
9
Confined Space Air Requirements for Canadian
Installations
9
Confined Space Air Requirements for U.S.
Installations
10
Exhaust Venting
11
Vent Pipe System
Drafthood Installation
Water Supply
11
Piping Installation
Closed System/Thermal Expansion
Temperature and Pressure (T&P) Relief Valve
12
The Temperature And Pressure Relief Valve:
The Discharge Line:
Installations Check
13
IV) OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . 14
Water Temperature Regulation
14
Temperature Adjustment
Lighting Instructions (Robertshaw 110R)
15
Lighting Instructions (Robertshaw 220R)
16
Lighting Instructions (White-Rodgers 37C)
17
V) OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Burner Flames
18
Emergency Shut Down
18
Checking the Draft
18
Operating Conditions
18
Condensation
Water Heater Sounds
Safety Shut-off
Anode/Water Odour
VI) MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Draining and Flushing
19
Periodic Inspection
19
External Cleaning of the Flame-arrester
20
Resetting and Replacing the Safety (TCO) Switch20
Temperature and Pressure Relief Valve
20
VII) COMBO HEATING . . . . . . . . . . . . . . . . . . . . . . . . 21
System Requirements
21
VIII) TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 22
IX) REPAIR PARTS ILLUSTRATION . . . . . . . . . . . . . 24
LIMITED WARRANTY. . . . . . . . . . . . . . . . . . . . . . 25
RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR FUTURE REFERENCE