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TABLE OF CONTENTS
I) INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
User Responsibilities
3
II) SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
For Installations in Canada
3
For Installations in the United States
3
Safety Warning (Flammable Vapours)
4
Safety Warning (Scalding)
4
Safety Warning (Carbon Monoxide)
4
Relief Valves (T&P)
4
Backflow Prevention
4
III) INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpacking the Water Heater
5
Location Requirements
5
In Earthquake Zones
Clearances and Accessibility
5
Gas Supply
6
Gas Pressure
Gas line purging
Gas Leak Testing
Air Requirements
8
Confined Space Air Requirements for Canadian
Installations
8
Confined Space Air Requirements for U.S.
Installations
9
Exhaust Venting
10
Vent Pipe System
Check for proper vent size
Drafthood Installation
Water Supply
10
Piping Installation
Union Connections
Mixing Valves
11
Closed System/Thermal Expansion
Temperature and Pressure (T&P) Relief Valve
12
The Temperature And Pressure Relief Valve:
The Discharge Line:
Wrap-around Filter Installation
13
Electrical Supply
14
24 Volt Control precautions
Installations Check
15
IV) OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . 15
Water Temperature Regulation
15
Temperature Adjustment
Lighting Instructions (White-Rodgers 37C)
17
Lighting Instructions (Honeywell 24 Volt)
18
V) OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Burner Flames
19
Emergency Shut Down
19
Checking the Draft
19
Operating Conditions
19
Condensation
Water Heater Sounds
Safety Shut-off
Anode/Water Odour
Water Heater Operation (24 Volt only)
21
System Error Codes for 24 Volt Controls
VI) MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Periodic Cleaning of the Wrap-around Filter
22
Draining and Flushing
22
Periodic Inspection
22
External Cleaning of the Flame-arrestor
22
Temperature and Pressure Relief Valve
23
Resetting and Replacing the Safety (TCO) Switch
(NG models)
23
Replacing the Thermocouple (TCO) Assembly (LP
models)
23
24 Volt Honeywell Control Service
24
Electronic Control Module Replacement
Valve Module Replacement
Temperature Sensor and Cable Replacement
VII) COMBO HEATING . . . . . . . . . . . . . . . . . . . . . . . . 26
System Requirements
26
VIII) TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 27
IX) REPAIR PARTS ILLUSTRATION . . . . . . . . . . . . . 29
RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR FUTURE REFERENCE
