Installation Requirements - Mira Zest 7.5 Installation, Operation And Maintenance Manual

Plumbing
1. The appliance is 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.
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.
4. The appliance is fitted with a plastic inlet connector intended to connect to a 15 mm
compression fitting supplied from the top, bottom or back.
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. This is important as 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. Refrain from applying excessive force when making any connections. Always provide
mechanical support when making the plumbing connections.
7. Do not install the appliance in a position where it may become frozen. The
shower unit must not be fitted where it may be exposed to freezing conditions. The
shower unit must not be used if suspected of being frozen.
8. We recommend that a non-restrictive (free flowing) isolating valve is fitted in the
cold water supply pipe to allow the complete maintenance of the appliance. Do not
use a valve with a loose washer plate (jumper) as this can lead to a build up of static
pressure.
9. To avoid damage to the case when soldered fittings are used, pre-solder the pipework
and fittings before connecting them to the inlet stub.
10. The appliance is fitted with a ½ " BSP male outlet thread, to accept a Mira shower
hose.
11. Supply pipework MUST be flushed to clear debris before connecting the appliance.

Installation Requirements

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