Page 2 - Customer After Sales Services
Technical Enquiries To supplement the detailed technical brochures, technical advice on the application and use of products in the Hamworthy Heating range is available from our technical team in Poole and our accredited agents. Site Assembly Hamworthy offer a service of site assembly for many of our...
Page 3 - HAMWORTHY HEATING LTD; PUREWELL Vari; THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE; PLEASE; Purewell Vari; Heat; Boilers; Automatic Ignition for Heating and Domestic Hot Water; Installation, Commissioning; NATURAL GAS
HAMWORTHY HEATING LTD Page PUREWELL Vari Heat 500001169/V 1 i NOTE: THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT. THE PUREWELL BOILER IS INTENDED FOR USE AS A COMMERCIAL APPLIANCE AND IS NOT CERTIFIED FOR USE IN DOMESTIC APPLICATIO...
Page 6 - PAGE
HAMWORTHY HEATING LTD Page PUREWELL Vari Heat 500001169/V 4 iv Figure 11.8 Heat Exchanger Assembly PV70c/PV95c/PV110c ................................................................ 47 Figure 11.9 Heat Exchanger Assembly PV140c/PV180c ...................................................................
Page 8 - SUPPLY AND DELIVERY
HAMWORTHY HEATING LTD 2 PUREWELL Vari Heat 500001169/V 2.0 SUPPLY AND DELIVERY Your boiler is despatched to site as a pre-assembled and tested unit. Each boiler is delivered by a tail lift vehicle and lowered to ground level. It is the installers responsibility to convey the boiler to the plantroom....
Page 10 - SIZE AND SPACE REQUIREMENTS
HAMWORTHY HEATING LTD 4 PUREWELL Vari Heat 500001169/V 3.0 SIZE AND SPACE REQUIREMENTS 3.1 The Purewell Vari Heat boiler range has been designed to utilise minimum floor space, therefore it is important the plantroom has sufficient ceiling height to allow for installation and connection to the flue ...
Page 12 - The floor or plinth must be fireproof in accordance with BS 6644.; R 1” Gas Connection; Figure 4.2 – Gas Connection Point
HAMWORTHY HEATING LTD 6 PUREWELL Vari Heat 500001169/V 4.0 SITE LOCATION AND PREPARATION 4.1 Site Location. The floor or plinth for the boilers and water manifold kit must be both flat and level to ensure correct alignment of fittings and connections. The floor or plinth must be sufficiently str...
Page 13 - Any stabiliser fitted must be in or close to the vertical chimney.
HAMWORTHY HEATING LTD 7 PUREWELL Vari Heat 500001169/V 4.3 Flues Flue termination, routing and construction must comply with the requirements of the Clean Air Act 1993—Chimney Memorandum, BS 6644 BS 5440 and IGE/UP/10. Any flue must be self supporting and separable from the boiler for servicing ...
Page 14 - Figure 4.3 – Flue Connection Point
HAMWORTHY HEATING LTD 8 PUREWELL Vari Heat 500001169/V Figure 4.3 – Flue Connection Point Flue Connection as delivered Flue Connection fitted Flue fixing bracket Flue Pipe Elbow
Page 15 - Figure 4.4 – Water Connection Points; Pressurised system to comply with BS 7074.
HAMWORTHY HEATING LTD 9 PUREWELL Vari Heat 500001169/V Figure 4.4 – Water Connection Points 4.4 Water Supply Feed and Expansion tanks to comply with static height requirements of BS6880 & BS6644. Cold feed and open vent pipes to comply with requirements of BS 6644. Pressurised system to co...
Page 16 - Figure 4.5.2 – Boiler Condensate Connection
HAMWORTHY HEATING LTD 10 PUREWELL Vari Heat 500001169/V Figure 4.5.2 – Boiler Condensate Connection 4.5 Condensate Connections Provision must be made for removal of condensate from the boiler and flue system. Condense is mildly acidic, typically pH 3 - pH 5. Condense pipework must be non-corro...
Page 18 - Open Vented sytems
HAMWORTHY HEATING LTD 12 PUREWELL Vari Heat 500001169/V Open Vented sytems Boilers must not be capable of isolation from the vent pipe. Valves between boiler and vent pipe to be three way type such that when boiler is isolated from vent pipe it is open to atmosphere. Safety valves should either be m...
Page 20 - CHECKS PRIOR TO LIGHTING; Main gas supply pressure - G20 - 20mbar
HAMWORTHY HEATING LTD 14 PUREWELL Vari Heat 500001169/V 7.0 CHECKS PRIOR TO LIGHTING IMPORTANT: BEFORE PROCEEDING TO LIGHT THE BOILER, ENSURE THAT THE PRE- COMMISSIONING CHECKS HAVE BEEN CARRIED OUT AND THE RESULTS SATISFACTORY. 7.1 Boiler Gas System Leak Check Ensure that the appliance manual gas s...
Page 21 - The
HAMWORTHY HEATING LTD 15 PUREWELL Vari Heat 500001169/V 7.2 Checks Prior to lighting the boiler NOTE! Ref er t o Ap p en d i x A f o r Nat u ral Gas m axim u m g as in l et p r ess u re f o r n o rm al o p er at io n . The following checks must be made prior to lighting the boiler. 1) Ensure that th...
Page 22 - Disconnect the electrical plug to the gas valve.
HAMWORTHY HEATING LTD 16 PUREWELL Vari Heat 500001169/V 7.3.1.1 Lighting the boiler 1) Refer to figure 8.1 for an overview of the control panel & what the push buttons do. 2) Ensure that both gas & electrical supplies are isolated (off) from the boiler. 3) Disconnect the electrical plug to t...
Page 24 - To increase the CO
HAMWORTHY HEATING LTD 18 PUREWELL Vari Heat 500001169/V 7.4 Combustion Checks The boiler is factory preset, however, where checks need be undertaken during servicing to confirm correct performance within the installation. 1) Put boiler into service mode ( Section 8.2.8.1 Page 29) to enable the High ...
Page 26 - Model
HAMWORTHY HEATING LTD 20 PUREWELL Vari Heat 500001169/V 7.5 Refer to section 8.0 - Controls Operation , t o set t h e rel ev an t b o iler p ar am et ers an d t im in g s sp eci f ic t o the installation. 7.6 User’s Instructions The boiler owner or their representative should be made aware of the li...
Page 28 - BOILER CONTROLS; mains voltage wiring.; Figure 8.1 - General Overview of Panel Fascia
HAMWORTHY HEATING LTD 22 PUREWELL Vari Heat 500001169/V 8.0 BOILER CONTROLS 8.1 CONTROLS OVERVIEW The Purewell VariHeat control system is a self contained, microprocessor based package (Siemens LMU64), con-trolling and monitoring all safety and functional aspects of the boiler performance and it’s i...
Page 30 - CONTROLS OPERATION
HAMWORTHY HEATING LTD 24 PUREWELL Vari Heat 500001169/V LMU Q AC34 .. Roo m The rmost at / T ime Switch RVA4 7 Bu ildin g A uto matio n / Re mote Man ageme nt Service To ol O CI4 20 AGU2.50 0 AGU2 .51 xx LPB Cli p-in Aux ilia ry mod ul es 0 .. 1 0 V 4 .. 2 0 mA OCI /ACS Figure 8.2 - System configura...
Page 31 - not used
HAMWORTHY HEATING LTD 25 PUREWELL Vari Heat 500001169/V Button Operation Function Lockout reset Resetting the LMU Enable dhw mode dhw on/off - not used Enable heating circuit selection of operating mode: mode Automatic operation Continuous ‘Normal’ Operation Continuous ‘Reduced’ Operation Standby He...
Page 39 - Error
HAMWORTHY HEATING LTD 33 PUREWELL Vari Heat 500001169/V Error code Internal Error- Code Potential cause Actions 0 No entry in code 10 Fault outside sensor 20 142 Short Circuit Boiler Flow Sensor Check temp sensor in water flow pipe & replace if nec-essary 143 Open Circuit Boiler Flow Sensor Chec...
Page 40 - Display
HAMWORTHY HEATING LTD 34 PUREWELL Vari Heat 500001169/V 8.2.11 - Display of operating phases (d i sp lay lev el A4) The operating phases according to the LMU…’s sequence diagram can be displayed (display level A4 press Info button 3 times). Assignment of the display code and the LMU...’s phase desig...
Page 44 - Figure 9.0 Boiler Wiring Schematic
HAMWORTHY HEATING LTD 38 PUREWELL Vari Heat 500001169/V Figure 9.0 Boiler Wiring Schematic
Page 45 - Safety Features Summary
HAMWORTHY HEATING LTD 39 PUREWELL Vari Heat 500001169/V 9.0 FAULT FINDING The Purewell VariHeat boiler is equipped with full self diagnostic fault indication, which is displayed on the screen - refer to section 8.2.1 - Controls Operation. Should a fault occur which cannot be reset, or a fault repeat...
Page 46 - (care is required when removing the burner as the
HAMWORTHY HEATING LTD 40 PUREWELL Vari Heat 500001169/V electrically isolated so as to prevent accidental operation., in the event that the installation is required for ongoing heating requirements. 10.2 The procedures detailed relate to a single boiler and must be carried out on all boilers within ...
Page 47 - REPLACEMENT OF FAILED COMPONENTS
HAMWORTHY HEATING LTD 41 PUREWELL Vari Heat 500001169/V 11.0 REPLACEMENT OF FAILED COMPONENTS There are a number of components listed below which can be replaced simply and quickly by following the given procedure. In each case carry out the appropriate part of the commissioning procedure & chec...
Page 48 - Figure 11.1 - Hot Surface Igniter and Flame Sensing Probe Positions
HAMWORTHY HEATING LTD 42 PUREWELL Vari Heat 500001169/V Figure 11.1 - Hot Surface Igniter and Flame Sensing Probe Positions Figure 11.2 - Gas Valve Assembly Models PV70c 531201067 Venturi Seal 532418005 Venturi 533901497 Gas Pressure Switch 533903037 Gas Valve
Page 49 - Figure 11.3 - Combustion System Assembly PV70c
HAMWORTHY HEATING LTD 43 PUREWELL Vari Heat 500001169/V Figure 11.3 - Combustion System Assembly PV70c Figure 11.4 - Combustion System Assembly Model PV70c 53301016 Burner 563007023 Flapper Valve 531201071 Burner Elbow Gasket 533901376 Fan Elbow Seal 533901376 Fan 563801016 HSI 533805021 Flame Probe...
Page 53 - Figure 11.7- Secondary Heat Exchanger Assembly
HAMWORTHY HEATING LTD 47 PUREWELL Vari Heat 500001169/V Figure 11.7- Secondary Heat Exchanger Assembly Figure 11.8- Heat Exchanger Assembly ( model 70c—110c shown for illustration) 531201116 Secondary Heat Exchanger Gasket 53242001 Secondary Heat Exchanger 531201117 Door Seal 530180003 Clamp 5320120...
Page 57 - APPENDIX B - ELECTRICAL CONNECTIONS AND CONTROLS; MUST NOT; WARNING: THE MAINS POWER SUPPLY MUST NOT BE SWITCHED
HAMWORTHY HEATING LTD 51 PUREWELL Vari Heat 500001169/V APPENDIX B - ELECTRICAL CONNECTIONS AND CONTROLS ELECTRICAL DATA Model 70c 95c 110c 140c 180c Normal Supply Voltage 230V ~ 50Hz Power Consumption (maximum)* - W 554 667 Start and Run Current (per boiler) - A 0.54 0.6 Figure B1.1 - Electrical Su...
Page 60 - APPENDIX C - FLUE DATA; WARNING: THE FLUE DISCHARGE FROM A VARIHEAT BOILER WILL GENERATE A; Figure C1—Flue Data
HAMWORTHY HEATING LTD 54 PUREWELL Vari Heat 500001169/V APPENDIX C - FLUE DATA Natural Gas C1.0 FLUE SYSTEM 1. Detailed recommendations for flue systems are given in BS 6644, and IGE/UP/10. All flue discharges for plant exceeding 135kW net input must comply with the third edition of the 1956 Clean A...
Page 61 - WARNING: THE FLUE SYSTEM MUST BE SELF SUPPORTING AND NOT PRESENT; C1.7 Surface Temperatures
HAMWORTHY HEATING LTD 55 PUREWELL Vari Heat 500001169/V C1.3 Materials. Materials used for the flue system must be mechanically robust, resistant to internal and external corrosion, non -combustible and durable under the conditions to which they are likely to be subjected. Consideration must be give...
Page 63 - must
HAMWORTHY HEATING LTD 57 PUREWELL Vari Heat 500001169/V APPENDIX D - VENTILATION D1.1 Air Supply Detailed recommendations for air supply are given in BS 6644. The following notes are intended to give general guidance. In all cases there must be provision for an adequate supply of air for both combus...
Page 65 - U NVEN TED SYSTE M: Primary loop, Ham worthy recom me nd ed system .
HAMWORTHY HEATING LTD 59 PUREWELL Vari Heat 500001169/V Figure E1.2 - Typical Piping Layouts U NVEN TED SYSTE M: Primary loop, Ham worthy recom me nd ed system . VEN TED SYSTEM: Singl e pipe hea de r M ai ns wat er Fee d pi p e ex pansi on Feed & tank va lv e Float Valv e Saf ety va lv e Drain E...
Page 69 - INSTALLER
HAMWORTHY HEATING LTD 63 PUREWELL Vari Heat 500001169/V INSTALLER SITE ADDRESS BOILER TYPE BOILER SIZE(S) UNIT NO(S). SERIAL NO(S). FLUE USEFUL USER INFORMATION NOTES
Page 72 - Sales; British engineering excellence from Hamworthy Heating
Hamworthy Heating Accredited Agents Hamworthy Heating Customer Service Centre Southern Ireland (Sales & Service) HEVAC LimitedNaas Road, Dublin 12, Irelandtel: 00 353 141 91919 fax: 00 353 145 84806 email: [email protected] Northern Ireland (Sales & Service) HVAC Supplies LimitedUnit A6, Dargan ...
