Thermaflow TH12 - Supply

THERMAL INNOVATIONS (UK) LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER | Tel: 0870 850 5207
2.6.1 SUPPLY
The boiler requires two separate ~230-240V power supplies. A (24HR) supply for controls and an
interruptible supply for the boiler. (Off Peak power supply if it is
available).
The off peak or interruptible mains supply is wired according to the following
diagram 2.6.1, from the 63
amp double pole isolator by way of flexible 16mm² cable into the main terminals in enclosure marked
No. 3 on the boiler schematic diagram 1.8.1, see diagram 2.6.1 below.
Diagram 2.6.1
17
L
N
E
Supply
*
*
*
*
25mm
2
COLOUR CODED METER TAILS
CONNECT TO METER / TELE-SWITCH
60A Double Pole
Isolating switch
with 50A Type C
MCB located at
meter or consumer
unit
60A Double Pole
Isolating switch
with 50A Type C
MCB located
adjacent to
Thermaflow
L
N
E
THERMAFLOW
TERMINALS
Cable Sizing
Boiler Rating Minimum Cable Size ~
230-240V-50Hz, (8,250-9,000w - 10mm²) and (11,000-12,000w –
16mm²). MCB MUST BE TYPE C