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4.0 INSTALLATION - WATER SUPPLY
4.1 Select appropriate push fit connector for chosen entry position:
Bottom entry water - 15mm x 15mm 90° elbow.
Rear entry water - 15mm x 15mm straight.
Note: stainless or chromed pipes do NOT provide secure
connections with push fit fittings (use copper pipe at all joints).
4.2 Push the connector fully home (28mm engagement) onto the
solenoid valve inlet spigot. To remove a push fit connector the
collar(collet) should be pushed towards the body of the fitting
whilst pulling the connector off the pipe.
4.3 Connect the inlet pipe to the push fit connector ensuring it is fully
pushed home (28mm engagement). After connection DO NOT
make soldered joints in the pipework close to the heater, as the
heat may damage the connector or the water heater itself.
4.4 To facilitate servicing a WRAS listed isolating valve must be fitted;
the use of braided hose between the isolating valve and heater
inlet is also suggested to improve serviceability.
4.6 Push fit connectors are supplied to allow either bottom or rear
entry of services. If a combination of entry points are required an
additional connector will be required as follows:
Bottom inlet, rear vent 15mm x 15mm elbow
(Heatrae Sadia part no. 95 607 510)
Rear inlet, bottom vent 15mm x 15mm straight
(Heatrae Sadia part no. 95 607 509)
5.0 INSTALLATION - VENT PIPE
5.1 Select appropriate push fit connector for chosen entry position:
Bottom entry vent -15mm x 15mm straight
Rear entry vent - 15mm x 15mm 90° elbow
5.2 Push the connector fully home (28mm engagement) onto the vent
pipe connection.
5.3 Connect the vent pipe to the push fit connector ensuring it is
pushed fully home (28mm engagement). Refer to the vent
pipe requirements detailed in 1.0 IMPORTANT INSTALLATION
POINTS. If a bottom entry vent pipe is used, the pipe must
terminate below the unit in a safe visible position. After
connection, DO NOT make soldered joints in the pipework close
to the heater, as the heat may damage the connector or the water
heater itself.
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
2
(3kW) or 4.0mm
2
(6kW).
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
for units rated
up to 3kW.
The timeswitch can then be set to switch 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.
