Electrical Supply - Hamworthy Purewell Variheat mk2 70c Installation, Commissioning And Servicing Instructions

4.6 ELECTRICAL SUPPLY

WARNING! THIS APPLIANCE MUST BE EARTHED IN ACCORDANCE WITH IEE REGULATIONS
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Boiler electrical supplies must not be switched by a time clock.
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Boilers are suitable for 230Volt, 50Hz supply.
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External fuses should be rated for 10 amps
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Wiring must be completed in heat resistant cable size 1.0mm² csa.
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Each module should have individual means of isolation.
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Electrical isolators must facilitate complete electrical isolation.
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Electrical isolators must have contact separation of minimum 3mm in all poles.
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Electrical isolators must be installed in readily accessible locations.
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Electrical supplies to boiler modules should only serve the boiler.
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Where volt free contacts are used, these too must be individually isolatable.
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Time clock control should be via the boiler modules Remote On/Off circuit (5V DC).
Any circuit connected to the Remote On/Off MUST be volt free and compatible.
ADDITIONAL INFORMATION REGARDING ELECTRICAL SUPPLIES IS GIVEN IN BS
EN60335, Part 1.
NOTE: The appliance MUST be isolated from the electrical supply if electric arc welding
is carried out on connecting pipework.
FOR DETAILED WIRING INSTRUCTIONS SEE SECTIONS 5.3, 9.0 & APPENDIX B
Figure 4.6 - Electrical Connections
HAMWORTHY HEATING LTD
11
PUREWELL Variheat mk2 218612 A03