Page 28
INSTALLATION
INST
ALL
A
TION
Electrical Connection
The BoilerMate A-Class OV SOL is pre-wired to DIN rail terminals from the A.C.B. and
plumbers are well able to complete the electrical installation provided they adhere
strictly to the IEE Requirements for Electrical Installations BS 7671.
All the terminals are suitably labelled.
Note: Do not attempt the electrical work unless you are competent to carry it out to
the above standards.
Before commencing check that the power source is in accordance with the Site
Requirements section and ensure that it is isolated.
Run the external wiring through the service slot provided in the base of the appliance.
The twin and earth 2 core input cable from the isolator to the appliance must not be
less than 6mm
2
PVC grade to BS 6500.
This supply cable must be fed via a 32 amp double pole isolator no more than 2
metres from the appliance.
Make the connections as shown opposite.
The appliance is provided with a link between terminals L2 and SL-R on the
terminal connections. This must be removed if a room thermostat is fitted see
opposite.
Clamp the cables in the clamps provided below
the terminal connections and ensure all cables
are routed to avoid hot surfaces.
The supply to the BoilerMate A-Class OV SOL
must be protected by a type B MCB to BS EN
60898 of at least 32 amps rating.
Two installer supplied cables are required to
connect the external room thermostat and
boiler. These cables must each be 4 core and
at least 1mm
2
or above in size.
For maintenance purposes it is essential that a
3 pole isolator is positioned within 2 metres of
the remote boiler installation. This ensures the
installation meets Corgi requirements for future
maintenance/service.
Note: The appliance controller is polarity
sensitive therefore if the live and neutral cables
are connected incorrectly the red light on the
front panel will flash rapidly and can not be
reset by operating the push button.
MCB 2
MCB 1
MCB 3
16A
6A
16A
N
L
N
E
SL-W
SL-B
SL-R
L1
L2
L3
N
N
N
SL-F
N-IH
L-IH
L-IH
SL-H
E
E
PE-IH
230 V
AC ~
ROOM ST
AT
CONNECTIONS
230 V
AC ~
SUPPL
Y
TO BOILER
INSTALLER ELECTRICAL
CONNECTIONS
2 x 3 Core & Earth
1.0 mm
2
2 Core & Earth
6.0 mm
2
Feed Into
Appliance
Feed From
Appliance
This is supplied with 2.5m of 2 x 0.5mm
2
double insulated cable. If necessary, this
will need extending. It is recommended
that it should be jointed into a 5amp
junction box located in the roof space
adjacent to the solar panel(s).
BOILERMATE ‘A’ CLASS OV SOL EXTERNAL CABLE CONNECTION DIAGRAM
G/Y
G/Y
Bl
Bl
Br
Br
Blk Blk
VAL-N
VL-N/O
VAL-SL
Sc
Sc
VAL-PE
Sz
Sz
VL-N/C
SC Solar Panel Sensor
