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6.0 INSTALLATION - ELECTRICAL
REQUIREMENTS
WARNING: This appliance must be earthed. It is suitable for a.c.
supply only. Disconnect the electrical supply before removing
the cover. Installation must be in accordance with the current
local Wiring Regulations.
6.1 Supremes must only be connected via Fixed Wiring (a plug and
socket must not be used).
6.2 A double pole isolating switch, with a contact separation of at least
3mm in both poles, should be incorporated in the electrical supply.
The supply should be fused 13 Amp (for 3kw units) or 30 Amp for
6kW units).
6.3 The nominal cross sectional area of the supply cable must be a
minimum of 1.5mm
6.4 The outer sheath of the cable must be secured using the cable
clamp provided, unless using conduit. To fit 20 mm conduit
remove the cable clamp (undo 2 screws securing the clamp to the
bracket and pull off clamp), fit flexible conduit tail to the metal
bracket and secure with a back nut.
6.5 Connect the cable to the terminal block as follows:
BROWN or RED wire to terminal marked L.
BLUE or BLACK wire to terminal marked N.
GREEN/YELLOW or GREEN wire to terminal marked
If using "Twin and Earth" cable the bare earth wire must be
sleeved.
6.6 If Supremes are to be unused for significant periods of time,
running costs can be reduced by switching the units off. It is
recommended that this is done automatically by incorporating a
suitable timeswitch in the supply to the unit. The use of Heatrae
Sadia accessory no. 95 970 124 is recommended
rated up to 3kW
the unit on for a suitable period to allow it to heat up before it is
next to be used. NOTE: A timeswitch must be capable of
switching the required resistive load.
(3kW) or 4.0mm
2
. The timeswitch can then be set to switch
(6kW).
2
for units
9
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