Benchmark SysteMate 125 97-317-26, Design, Installation And Servicing Instructions, Page: 21 / 44

Page 21
SY
STEMA
TE
2000
2.2 INSTALLATION
2.0 INSTALLATION
Make the connections as shown opposite on
the terminal strip provided.
The appliance is provided with a link
between terminals 9 and 11 on the terminal
strip. This must be removed if a room
thermostat is fi tted see opposite.
No Clock Models
• If a remote clock is not being provided links
will be required between 21/22 and 22/23.
• If a single remote clock is being provided
a single link will be required between 21/22
to allow the appliance to provide hot water
24hrs/day.
• If a two channel clock is being provided
no links will be required. (A two channel
clock is normally only required to eliminate
noise caused by the boiler fi ring during the
night).
• Wire the connections from the clock as
shown
opposite.
Clamp the cables in the grips provided below
the terminal strip and ensure all cables are
routed to avoid hot surfaces.
Note: The appliance is provided with a 4.0mm
earth cable from an earthing strap on the
heating system bypass pipe to the earth stud
on the wiring panel.
Electrical Connection - Standard Appliance
The SysteMate 2000 is pre-wired to a 12 way
terminal strip 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. A schematic arrangement of the wiring
is shown on page 24.
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.
It is recommended that the 3 core input cable
from the isolator to the appliance is not less
than 1.5mm
2 PVC grade to BS 6500.
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Wiring guide from Clock to ACB
Neutral - Terminal 20
Permanent Live (to clock) - Terminal 21
Hot Water Channel Switched Live (from clock) - Terminal 22
(only required with 2 channel clock)
Heating Channel Switched Live (from clock) - Terminal 23
*
If the power consumption of the boiler is more than 230 watts the
supplies to the boiler should be provided via a relay as shown above.
If the appliance is provided with Switch the supplies to the boiler should
be taken from the outlet side of FS3 and the adjacent neutral connector
and earth post. (see wiring diagram on page 23)
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