Kohler Electric Shower User Manual download pdf (Page 11)

Installation Requirements

Plumbing

1. The Mira Zest 7.5 kW and 8.5 kW electric showers are designed to operate with

a minimum maintained inlet pressure of 0.7 bar up to a maximum static

inlet pressure of 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 (the

vertical distance from the base of the cold water storage cistern to the shower

fitting handset). 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 Showers

contact telephone and fax numbers.

3. The appliance is suitable for installation within the shower area. It is fitted with

a pressure relief device and 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.

4. The appliance is fitted with an inlet connector assembly that is designed to

accept plumbing supplies from the top or bottom. The water supply can be fed

with 15 mm pipe or 10 mm microbore pipe, suitably adapted into the inlet

connector assembly. If 10 mm microbore is used, then an allowance for

increased pressure loss must be made to ensure that the minimum maintained

inlet pressure is achieved.

5. Do not fit the appliance to the wall and tile up to the case. The appliance must

be fitted onto a finished flat and even wall 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).

6. Use only the inlet connector assembly supplied with the appliance. Do not use

any other types of fitting.

7. Refrain from applying excessive force when making any connections. Always

provide mechanical support when making the plumbing connections.

8. This appliance is not designed to be plumbed directly from the rear. For a rear-

entry supply, add an elbow to the supply pipe and connect it as a rising or falling

supply.

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Kohler Electric Shower User Manual Page 11