Electrical Connections - Redring Vital RVLS7 Installation And User Manual

12. Commissioning The Shower
IMPORTANT: Make sure that the electricity supply has been disconnected at the isolation
switch.
1. Turn the top rotary power selector knob;
identifi ed by the solid blue line, to the Cold
setting.
2. Turn the rotary temperature control fully
anti-clockwise to the minimum temperature
position (direction of blue graphic).
3. Ensure that the water supply is fully on at
the mains stop cock and isolating service
valve.
4. Check that water is not leaking from the
bottom of the case.
5. Push the start / stop button and check that
water fl ows freely from the shower within a
few seconds. At this point the water from the
shower handset will be at full force and at a
cool temperature.
6. Slowly rotate the bottom temperature control
knob to the maximum temperature postition
(fully clockwise). This will gradually reduce
the fl ow of water through the shower. The
water temperature will remain cool.
7. Return the temperature knob to the
minimum temperature position (fully anti-
clockwise).
8. Switch on the electrical supply isolation
switch.
9. Now turn the top power selector knob to the
Eco 1 power setting indicated by the dashed
red line. Allow a few seconds for the warmer
temperature to reach the shower head.
This shows that the Eco 1 power setting is
working correctly.
10. Now turn the top power selector to the high
power setting indicated by the solid red line.
The temperature should rise further. This
shows that the full power setting is working
correctly.
IMPORTANT
Turn the temperature control knob anti-clockwise for maximum fl ow before switching on
the unit. This will ensure a fast fi ll up of the unit when the shower is fi rst switched on.
CAUTION
The shower unit must be full of water before heat settings are used
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11. Now adjust the bottom rotary temperature
control knob clockwise for hotter water
allowing a few seconds for the temperature
to stabilize. Set the control to a comfortable
showering temperature slowly.
12. Push the start / stop button to switch the
unit off.
13. Switch off at the electrical isolation switch.
14. Finally we recommend that the shower
head is removed to make sure no debris
has worked into it. Clean and re-fi t.
Power Selecto
Temperature
Control
Start / Stop Button
.

9. Electrical Connections

The electrical installation must be in
accordance with the current BS 7671 (I.E.T.
wiring regulations) and part P of the building
and / or local regulations.
The shower unit is designed for a single phase
50 Hz a.c. electrical supply.
Electrical Specfi cations
Normal Power Rating at 240V Normal Power Rating at 230V
7.5kW - (40A MCB rating) 6.9kW - (40A MCB rating)
8.5kW - (40A MCB rating) 7.8kW - (40A MCB rating)
9.5kW - 40A MCB rating) 8.7kW - (40A MCB rating)
10.5kW - (45A MCB rating) 9.6kW - (45A MCB rating)
IMPORTANT: The heating elements on the
UK models are manufactured to 230-240V
specifi cation and will give a lower kW rating if
the voltage supply is below 240V.
The shower unit must be permanently
connected to the electrical supply, direct from
the consumer unit via an electrical isolation
switch with a minimum contact gap of 3 mm.
The switch must be readily accessible and
clearly identifi able and sited out of reach of
a person using the shower over a fi xed bath
or shower tray, unless the switch is pull cord
operated. The wiring must be connected to
the switch without the use of a plug or socket
outlet.
The supply cable size is determined by the kW
rating of the product (as detailed on the rating
plate fi xed to the back plate) and the distance
between the shower and the consumer unit.
The table below is for guidance only but will
help you choose the correct cable for your
installation. If you are in any doubt consult an
electrician.
DIRECT ClLIPED Cable Run Guide
MINIMUM MAX CABLE
KW NOMINAL RATING FUSE RUN
RATING AT 240V ISOLATING RATING
6mm² 10mm²
SWITCH
7.5 31.25amps 40amps 40amps 29m
8.5 35.41amps 40amps 40amps 23m
9.5 39.58amps 40amps 40amps 21m
10.5 43.75amps 45amps 45amps 18m
IMPORTANT
Ensure that the terminal block screws are fully tightened and that no cable insulation
is trapped under screws, and tighten periodically in accordance with BS 7671. The
earth continuity conductor of the electrical installation must be effectively connected
to all exposed metal parts of other appliances and services in the room in which the
shower unit is installed to conform with BS 7671.
1. The incoming cable should be hidden.
Connect as follows:
Earth cable to terminal marked
Neutral cable to terminal marked N
Live cable to terminal marked L
2. The outer sheath of the supply cable must
be stripped back to a suitable length and
the earth conductor must have an earthing
sleeve fi tted.
3. Connect the cable to the terminal block.
Ensure that ALL the retaining screws are
VERY tight and that NO cable insulation
is trapped under the screws. Loose
connections can result in cable overheating.
IMPORTANT: Failure to ensure that the
retaining screws are VERY tight could result in
a failure of the terminal block.
IMPORTANT: DO NOT switch on the electricity
supply until the shower cover has been fi tted.
IMPORTANT: Follow these
N
L cut back cable guidelines,
to ensure the product has a
reliable electrical connection.
Terminal
block
48m
38m
32m
30m
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