HAMWORTHY HEATING LTD
17
UPTON FLOOR STANDING SERIES
500001340/C
4.6 Electrical Supply
WARNING! THIS APPLIANCE MUST BE EARTHED IN ACCORDANCE WITH IEE REGULATIONS
•
Boiler electrical supplies must not be switched by a time clock.
•
Boilers are suitable for 230Volt, 50Hz supply.
•
External fuses should be rated for 10 amps
•
Wiring must be completed in heat resistant cable size 1.0mm² csa.
•
Each boiler MUST have individual means of isolation.
•
Electrical isolators must facilitate complete electrical isolation.
•
Electrical isolators must have contact separation of minimum 3mm in all poles.
•
Electrical isolators must be installed in readily accessible locations.
•
Electrical supplies to boiler modules should only serve the boiler using the conduits supplied. High & low
voltage cables should be separated into individual conduits.
•
Where an external alarm is required, terminals are provided which are volt free and rated at 230v.
•
Time clock control should be via the boiler modules stop/start circuit (24V DC).
•
Any interlock circuit must be in series with the time control for each circuit. The interlock circuit must never
be used to isolate the boiler electrical supply.
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 pipe work.
FOR TYPICAL SCHEMATIC DETAILS SEE FIGURE 4.6
FOR DETAILED WIRING INSTRUCTIONS SEE FIGURES 9.3.1
Figure 4.6
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Navistem Electrical Connections
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