Installation Requirements - Mira 415 Installation And User Manual

InsTallaTIon requIremenTs

Key to symbols appearing throughout this guide.
1. Layout and sizing of pipework must be such that when other services are used,
pressures at the shower control inlets do not fall below the recommended minimum
(1 bar). The pressure balancing performance is impaired below 1 bar. When fitted
with some heater appliances the minimum maintained pressure may be above 1 bar,
refer to the section entitled "Commissioning" - "multi-point gas water heaters"
or "Combination boilers".
2. The Mira 415 is not suitable for installation as part of a gravity-fed plumbing system.
i.e. in conjunction with a hot water cylinder and cold water storage cistern.
3. When used with a modulating multi-point or combination boiler above 5 bar
maintained pressure, a pressure reducing valve will be necessary.
4. Supply pipes musT be flushed to clear debris before connecting the shower control
(Byelaw 55).
5. The installation of in-line strainers are recommended to protect the shower control
from the ingress of water borne debris.
6. Conveniently situated isolating valves must be fitted for servicing purposes.
7. No form of outlet flow control should be fitted, only Kohler Mira recommended
fittings should be used in the outlet pipework.
8. Installations musT comply with the Local Water Company or Water Undertakers
Byelaws and BS6700
Byelaw 17 – "Shower Hose Connections" requires the handset to be "constrained
by a fixed or sliding attachment so that it can only discharge water at a point not
less than 25mm above the spill-over level of the relevant bath, shower tray or other
fixed appliance", refer to Figure 1.
Byelaw 91 - If a product is to be used with a mains fed secondary water heating
device (eg jacketed heater) the system must have a means of accommodating the
expansion of water.
For further information please see "The Mira Shower Guide to the new Model Water
Byelaws".
If in doubt we recommend that a plumber or contractor who is registered with one
of the following be contacted:-
Institute of Plumbing (I.O.P.) throughout the U.K. Tel: 01708 472791
National Association of Plumbing, Heating and Mechanical Services Contractors
(N.A.P.H. & M.S.C.) England and Wales. Tel: 01203 470626
Scottish and Northern Ireland Plumbing Employers' Federation (S.N.I.P.E.F)
Scotland and Northern Ireland. Tel: 0131 225 2255
Float operated valve
Isolating valve
Shower control
Warning or overflow pipe
Pressure reducing valve
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