Specifications

TM031 Integrity 24L Service Instructions REV: A
D.O.I: 30/10/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
2
Contents
Safety Warning ....................................................................................................................3
Introduction ..........................................................................................................................3
Water Heater Model Identification........................................................................................3
Specifications.......................................................................................................................4
Preset Temperature Adjustment ..........................................................................................5
Wiring Diagram - Models with Mechanical Bypass ..............................................................6
Wiring Diagram - Models with Solenoid Operated Bypass...................................................7
Sequence of Operation........................................................................................................8
Bypass Operation ................................................................................................................9
Anti-Frost Heater Circuit ....................................................................................................10
Product Changes ...............................................................................................................10
Software Changes..........................................................................................................10
Parts Replacement & Wiring Changes...........................................................................10
In-series Gas Boosting.......................................................................................................15
Tempering Valves..............................................................................................................20
Remote Controllers............................................................................................................20
Bath Fill Operation .............................................................................................................25
How to Fault Find...............................................................................................................26
Operational Flow Charts ....................................................................................................28
Error Codes .......................................................................................................................31
Diagnostic Test Points .......................................................................................................32
Maintenance Information ...................................................................................................33
Clearing Error Code History...............................................................................................34
Resetting Error Codes .......................................................................................................35
Fault Diagnosis Sequence (Fault Finding Chart G) ...........................................................36
Fault Finding Chart 1 .........................................................................................................37
Fault Finding Chart 2 .........................................................................................................39
Fault Finding Chart 3 .........................................................................................................41
Fault Finding Chart 3.1 ......................................................................................................43
Fault Finding Chart 3.2 ......................................................................................................44
Fault Finding Charts 3.3 and 3.5........................................................................................46
Fault Finding Chart 3.6 ......................................................................................................47
Fault Finding Chart 3.7 ......................................................................................................49
Fault Finding Chart 3.8 ......................................................................................................50
Fault Finding Charts 4 and 4.1...........................................................................................51
Fault Finding Chart 4.2 ......................................................................................................52
Fault Finding Chart 4.3 ......................................................................................................53
Fault Finding Chart 5 .........................................................................................................54
Burner Gas Pressure Check ..............................................................................................55
Component Replacement Procedures...............................................................................56
Exploded View 1 - 871024, 871024-B & 875024-B Models ...............................................64
Exploded View 2 - 871024 Models ....................................................................................66
Exploded View 3 - 871024-B & 875024-B Models .............................................................68
Exploded View 4 - 871024-B & 875024-B Models .............................................................70
Exploded View 5 - 871024-C & 875024-C Models.............................................................72
Exploded View 6 - 871024-C & 875024-C Models.............................................................74
Gas Type Conversion Procedure.......................................................................................76
Warranty ............................................................................................................................78
Document Revision History................................................................................................79