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INSTALLATION REQUIREMENTS
Plumbing
1.
The Mira Jump 8.5kW and 9.5kW electric showers are designed to operate with
a minimum maintained inlet pressure of 70kPa (0.7 bar) up to a maximum
static inlet pressure of 1000kPa (10 bar).
The Mira Jump 10.8kW electric shower is designed to operate with a minimum
maintained inlet pressure of 100kPa (1.0 bar) up to a maximum static inlet
pressure of 1000kPa (10 bar).
2.
The appliance is normally connected to the cold water mains-fed supply.
However, the water supply can be taken from a cold water storage cistern,
provided there is a minimum maintained inlet head of water of 7 metres for the
8.5kW, 9.5kW and 10 metres for the 10.8kW (the vertical distance from the base
of the cold water storage cistern to the showerhead). To reduce pressure losses
and fluctuations, the cistern-fed water supply must be independent from other
supply draw-offs, and should avoid long horizontal pipe runs and use swept
bends rather than 90° elbows. For further advice please refer to the back cover
of this guide for Mira Jump Showers contact telephone and fax numbers.
3.
If pipework and/or electrical cables enter the shower from the rear through a
hole in the wall, provision must be made to prevent water ingress back into the
wall structure.
4.
The appliance is suitable for installation within the shower area and is fitted with
a pressure relief valve. It must be positioned over a water catchment area with
the controls at a convenient height for the user. The shower fitting should be
positioned so that it discharges down the centre line of the bath, or across the
opening of a shower cubicle, and must be directed away from the appliance.
5.
The inlet connector is designed to accept plumbing supplies from below, from
the side or from the rear of the appliance. The water supply can be fed with
15mm pipe or 10mm microbore pipe, suitably adapted into the inlet connector
assembly. If 10mm microbore is used, then an allowance for increased pressure
loss must be made to ensure that the minimum maintained inlet pressure is
achieved.
6.
Do not fit the appliance to the wall and tile up to the case. The appliance
must be fitted to a tiled or sealed finished surface, otherwise, difficulty may
be encountered when fitting the cover, and subsequent operation of the unit
could be impaired (small pillars moulded on to the back of the case allow air
circulation).
7.
Use only the inlet connector assembly supplied with the appliance. Do not use
any other types of fitting.
8.
Refrain from applying excessive force when making any connections. Always
provide mechanical support when making the plumbing connections.
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