Mira elite 2 Installation, Operation, Maintenance Manual page 16

2.7. The Elite 2 must be earthed by connecting the supply cable earth conductor
to the earth terminal. All exposed metal parts within 3 metres of the shower,
within the shower room, must be electrically bonded to earth using a
minimum cable size of 2.5 millimetres
2.8. Do not turn on the electrical supply until the plumbing has been completed.
Ensure the water supply is turned on as the unit must not be operated dry.
2.9. The Elite 2 is fitted with a pump motor, and some mechanical noise can be
expected in addition to the noise generated by the spray from the handset.
The type of wall surface will affect the perceived sound levels. Stud partition
and panel walls have a tendency to resonate, whilst solid walls will provide
the quietest operation. The tone of the pump motor may change when the
temperature control knob is adjusted. This is quite normal.
Plumbing and Electrical Schematic Diagram
Cold Water Storage
Cistern (Tank)
Cold Water
Mains Feed
Cistern Fed
Cold Supply
to Other
Outlets
Hot Water
Cylinder Feed
16
Warning Pipe
Isolating
Valve
2
.
Hot Water
Cylinder Vent
Pipe
Independent Cold Water
Supply to Shower
Power
Low Flow
Medium
Low High
Temperature
Start Stop
Consumer Unit
Double Pole
Pullcord Switch
Hose Retaining
Ring