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b.
Plumbing
The heater must be connected to the mains cold water supply. This must have a minimum running pressure of 69kPa
(0.7 bar, 10 psi) and a maximum pressure of 690kPa (7.0 bar, 100 psi).
Before connecting the pipe work to the shower, ensure that pipe work is flushed out.
1.
It is recommended that a WRAS (Water Regulations Advisory Scheme) listed isolating valve is fitted to the incoming
mains cold water before the shower unit.
This will allow the unit to be serviced or exchanged without having to turn off the water at the water stop valve.
2.
The heater can be fed from a header tank provided this has a minimum head of 7 metres (23ft).
3.
Ø15mm copper or stainless steel pipe should be used.
To avoid cross threading, DO NOT REMOVE the brass nut from the elbow when positioning the pipe.
If top entry is required, turn the elbow 180° into the required position.
If rear entry is required, treat as top entry with an additional "Yorkshire" elbow (soldered type) for fitting into the rear
channel.
In multiple installations, correct pipe work sizes should be calculated to maintain adequate flow to each shower.
4.
It is permissible to use a WRAS (Water Regulations Advisory Scheme) approved sealant sparingly whilst avoiding
excess finding its way into the shower operating parts.
5.
With isolating valve connected, flush the pipe work through to remove any particles etc, before making the final
connection to the shower. Blockage in the water ways (particularly the handset and solenoid valve) will prevent the
heater working properly. Note: You may be charged for a service call if it is due to incorrect installation.
6.
The shower is designed to have an open outlet and should only be used with manufacturer recommended fittings.
Do not connect the handset until after the shower front cover and corner section are fitted.
TAKE CARE TO AVOID RESTRICTING THE OUTLET OF THE PRESSURE RELIEF DEVICE
c) Electrical
The electrical installation must be in accordance with the current BS.7671 (IEE Wiring Regulations) and "Part P" of the
Building Regulations.
1.
The shower is designed for a single phase AC electrical supply.
Please check the rating plate on the unit to see what details apply to your unit.
AS A GUIDE ONLY
Rating
8.5 / 7.8kW
240 / 230V
and
9.5 / 8.7kW
240 / 230V
Remember to upgrade the cable if it runs in thermal insulation in a loft, or for a longer distance.
2.
A means for disconnection in all poles must be incorporated in the fixed wiring in accordance with the wiring rules.
We recommend a ceiling switch mounted in a convenient position.
3.
Cut back cable as in diagram 9. Connect cable to terminal block making sure that all the retaining screws are
VERY TIGHT and that no cable insulation is trapped under the screws.
4.
WARNING: THIS APPLIANCE MUST BE EARTHED
WARNING: DO NOT FIT A TAP ON THE SHOWER OUTLET.
(* Only applies if external earth impedance is less than 0.35 Ohms)
Cable Sizes
6.0mm²
10.0mm²
6.0mm²
10.0mm²
Fuse / MCB
40A Type B MCB
45A BS 1361 fuse
6
Cable Length
27m Max.
45m Max.
12m Max.*
21m Max.*
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