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7.5.
Electrical Connections
All electricity connections to the boiler must be made by a fully qualified electrician. Improper electric
connections made by unqualified people may cause failure of critical components of the boiler and will
invalidate the warranty.
DANGER! Electric Shock Risk
Make sure to isolate the main power supply before starting
work inside the boiler. Secure the main energy supply to
prevent from turning on while working on the boiler.
!! IMPORTANT NOTICE!!
UNDER NO CIRCUMSTANCES MUST THIS BOILER BE CONNECTED
TO THE MAINS POWER WHILST THE BOILER IS DRY.
THE BOILER MUST BE FILLED WITH WATER AND PRESSURE
TESTED PRIOR TO ELECTRICAL CONNECTION.
FAILURE TO DO SO WILL INVALIDATE THE WARRANTY
7.5.1.
Electricity Connection Precautions
7.5.1.1.
We recommend that a load check is carried out when installing high power boilers.
7.5.1.2.
All electrical connections must be made by a fully qualified electrician.
7.5.1.3.
All wiring must be carried out in accordance with current IEE BS7671 wiring regulations. The
supply cable to the boiler should be of sufficient size to carry the load capacity required. We
recommend a high temperature multi strand flexible cable.
Rated Boiler Output
6kW
8kW
12kW
14kW
Single / Three Phase
Single
Single
Single
Single
Rated Voltage
230VAC 230VAC 230VAC 230VAC
Current (A) @ Rated
Voltage
26
34
52
61
Minimum MCB/RCB (A)
32
40
63
63
Minimum Cable Size
(mm2)
4
6
10
10
7.5.1.4.
An upgrade to the main fuse of the property may be required.
7.5.1.5.
As well as the boiler being properly earthed, this appliance requires supplementary earth
bonding across all pipes connected to the boiler.
7.5.1.6.
Surge protection devices must be installed within the installation in-line with regulation 443 of
BS7671.
We recommend fitting an appropriately sized external RCD near to the boiler.
