11) Refer to the Guide Sheet DIAGRAM C. The main electrical supply should come from either the
Distribution Board, fused or with MCB Type C rated 16 amps, thence via a separate Residual Current
Detector (RCD), or from a local switched fused spur with integral RCD. Remove the control unit lid and
identify the terminals within. The mains supply terminal block is marked L, N and E and is top left (facing)
on the control unit Printed Circuit Board.
Note. Although the system can run from a 13 Amp switched socket outlet, this is not advised.
In all instances a separate RCD MUST be in circuit. The system draws approximately 4 amps at
240 volts A.C. Whatever cable is run to the local switch arrangement, the MAXIMUM cable size to
enter the control unit should be 1.5mm
2
flexible TRS. Use a suitable joint box to convert if necessary.
Permanently isolate, by fuse removal, this supply until the total installation is complete.
Do not apply power until then.
The next stage is the locating and fitting of the display unit.
12) Refer to the Guide Sheet DIAGRAM C. The display unit is an important part of your system. Choose
the location carefully. The unit is designed to be mounted “flush” using a plaster-depth back box,
or “surface” using a surface back box. The display unit should be located in a visible position, in an area
that is often occupied. The display unit is wired back to the control panel, using standard “Alarm” cable.
This cable should be four cores at 1 amp per core rating (7/0.2 mm each core. Core colours red, yellow,
black, blue). The cable should be connected between the terminal block on the back of the display unit
to the terminal block marked “DISPLAY” in the control panel. The terminal blocks at both ends are marked
R for RED core, Y for YELLOW core, Bu for BLUE core and Bk for black core. The terminal block is
marked display and is top right (facing) on the control panel Printed Circuit Board.
(Note. If you wish to use the PUMP LOCK-OUT MODE or BMS contact on the display unit and you need
to bring the feed from the contact back into the same location as the CONTROL unit, use 6 core cable.
The two remaining cores go into the pair of terminals at the back of the display unit. See the document on
NON-STANDARD SYSTEMS for details of the BMS CONNECTIONS and PUMP LOCK-OUT mode). The
next stage is the wiring in (and installation) of the pump.
08
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