Name: Hamworthy 105he
Brand: Hamworthy
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IMPORTANT NOTE

THESE INSTRUCTIONS MUST BE READ

AND UNDERSTOOD BEFORE INSTALLING,

COMMISSIONING, OPERATING OR

SERVICING EQUIPMENT

Purewell Vari

Heat

Boilers

Cast Iron, Pre-mix, High Efficiency, Modular Boilers with

Automatic Ignition for Heating and Domestic Hot Water

Installations

Installation, Commissioning

and Servicing Instructions

MODELS - 65he, 85he, 105he, 125he

NATURAL GAS

Table of Contents4
Introduction7
Supply and Delivery8
Size and Space Requirements10
Site Location and Preparation12
Site Location12
Gas Supply12
Flues13
Figure 4.3 Flue Connection Point13
Water Supply14
Figure 4.4 Water Connection Points14
Condensate Connections15
Figure 4.5.1 Boiler Condensate Connection15
Electrical Supply16
Figure 4.6 Electrical Connections16
Boiler Assembly17
Flue Pipe17
Water Connections17
Figure 5.2.1 Rear Water Connections17
Electrical Connections18
Pre-Commissioning19
Gas Supply19
Ventilation19
Pipework, Valves and Pump19
Flue19
Electrical19
Checks Prior to Lighting20
Boiler Gas System Leak Check20
Figure 7.1.1 Test Point Locations on Gas Valves20
Checks Prior to Lighting the Boiler21
Initial Lighting21
Figure 7.2.1 Location Gas Isolating Valve / Safety Temperature Limiter21
Combustion Checks24
User Instructions24
Figure 7.4.1 Removal of Sample Point Plug24
Boiler Controls26
Controls Operation27
Standby28
Figure 8.2.12 Info Display Parameters29
Figure 8.2.2 Screen Legend31
Figure 8.2.3.1 Default Display32
Figure 8.2.4 Display of Lockout Code33
Figure 8.2.6 Overview of End User Parameters34
Fault Error Code Display35
Figure 8.3.11 Operating Phases40
Fault Finding42
Servicing42
Replacement of Failed Components44
Igniter and Flame Probe Assembly44
Main Gas Valve44
Combustion Fan44
Figure 11.6 Casing Assembly47
Recommended Spares50
Appendix A Gas Data51
Appendix B Electrical Connections and Controls52
Figure B1.2 External Control Wiring for Multiple Boiler Installation53
Figure C1 Flue Data55
Figure C1.1 Flue Resistance57
Figure D1 Mechanical Ventilation Flow Rates58
Figure E1 Water Data59
Figure E1.2 Typical Piping Layouts60
Figure E1.3.1 Schematic for Single Boiler System62
Figure E1.3.3 Schematic for Single Boiler (External 0~10V) Multi Circuit System63

Hamworthy 105he User Manual

Table of Contents

Questions and Answers:

Hamworthy 105he Specifications

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Brand	Hamworthy
Model	105he
Category	Boiler
Language	English