
Supplied By www.heating spares.co Tel. 0161 620 6677
7
221100C
4 E l e c t r i c a l W i r i n g
4.1 General
The fire front electrical supply, 230V~50Hz, is taken
from the back boiler electrical control box.
A cable and plug assembly is supplied in the “loose
items” pack.
Refer to Back Boiler Installation Instructions,
Section 5.2 Control Box Access, for control box
removal.
Isolate electrical supply to the boiler.
4.2 Wiring
WARNING. This fire front must be earthed.
The cable supplied must be connected to the terminal
strip and earthing post inside the control box. Note,
these connections can be made when the back boiler
electrical connections are made, see back boiler
installation instructions, diagram 5.1 or 5.1A.
Thread cable through front of control box, see
diagram 4.1.
Connect incoming mains earth conductor to unwired
earthing post, see diagram 4.1, 4.2 or 5.1A, 5.5A in Back
Boiler Installation Instruction.
Connect incoming mains neutral conductor to N and live
conductor to L.
If additional controls are to be used the link between SL1
and SL2 MUST be removed.
The controlling supply from any such devices are to be
connected to terminal SL2, see diagram 4.2 or 5.1A, in
Back Boiler Installation Instruction.
Note, both the fire front and back boiler must be
supplied from the same isolating switch.
Place the strain relief grommet, from the loose items
pack, around the cable, squeeze the halves together.
Position location flats and push grommet into the hole in
the control box, see diagram 4.1.
Refer to “Control Box Fitting” in the Back Boiler
Installation Instructions.
Diagram 4.1
4498
4499
EARTH
STUD
STRAIN
RELIEF
GROMMET
g/y
b
TO BOILER
br
b
bk
bk
bk
b
br
g/y
br
b
br
g/y
CONNECTOR
FIRE CABLE
CONNECTION
IN THE BACK BOILER
CONTROL BOX
230V~50Hz
MAINS SUPPLY
FUSED AT 3AMP
br
BROWN
b
BLUE
bk
BLACK
g/y GREEN AND YELLOW
KEY
Diagram 4.2
L1
N1
SL1
SL2
L
N
EARTH
STUD
CABLE/CONNECTOR
ASSEMBLY
TERMINAL
STRIP
4.3 Testing
Checks to ensure electrical safety should be carried out
by a competent person.
After installation preliminary electrical system checks as
below should be carried out:
1. Test insulation resistance to earth of mains cables.
2. Test the earth continuity and short circuit of all
cables.
3. Test the polarity of the mains.