Technical data

Page 26
2.2 INSTALLATION
Electrical Connection - Standard Appliance
The BoilerMate A-Class SP 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 section 1.2 Site
Requirements and ensure that it is isolated.
Run the external wiring through the service
slot provided in the base of the appliance.
The 2 & E 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 SL_R and L2 on the
terminal connections. This must be
removed if a room thermostat is fi tted see
opposite.
Clamp the cables in the grips provided below
the terminal connections and ensure all cables
are routed to avoid hot surfaces.
The supply to the BoilerMate A-Class must be
protected by a type B MCB to BS EN 60898 of
at least 32 amps rating.
Two installer supplied fl ex cables are required
to connect 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
an all pole isolator is positioned within 2
metres of the remote boiler installation, this
helps in future maintenance to current Corgi
requirements.
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 fl ash rapidly and can not be
reset by operating the push button.
2.0 INSTALLATION
INSTALLER ELECTRICAL
CONNECTIONS
240 VAC ~ ROOM STAT CONNECTIONS
G/Y BR BR BL BLBKBK G/Y
240 VAC ~ SUPPLY TO BOILER
2 x 3 Core & Earth
1.0 mm
2
Feeds From
Appliance
Feed Into
Appliance
BOILERMATE ‘A’ CLASS
EXTERNAL CABLE CONNECTION DIAGRAM
N
3
2
4
1
L
On a ‘No Clock Option’ an external 2
channel controller must be supplied
separately and connected as above.
(Factory Fitted Links between
L1- SL_H - SL_W will need to be removed)
Timed Outputs
HW Off
CH Off
HW On
CH On
On
On
Off
Off
Clock
MCB 2
MCB 1
MCB 3
16A6A 16A
L
N
N
SL-B SL-R
L1 L2 L3
E
E
SL-H
SL-F
N N N
E
E
PE-IH
N-IH
L-IH
L-IH
VAL-N VAL-L1 VAL-L2 VAL-SL
240 VAC ~ FEED SUPPLY
BL G/YBR
2 Core & Earth
6.0 mm
2
SL-W