Mira Extreme Thermostatic, Installation & User Manual

Page: 10 / 44

10
Section
6
Installation Requirements
1. General
1.1. Do not take risks with plumbing or electrical equipment.
1.2. Do not install the Mira Extreme in a position where it could become frozen.
1.3. Isolate electrical and water supplies before proceeding with the installation of
the Mira Extreme.
1.4. The shower control must be fed from a cold water storage cistern and hot water
cylinder providing nominally equal pressures.
1.5. The installation must be carried out by a competent installer.
1.6. Decide on a suitable position for the Mira Extreme (minimum distance of 200
mm from the ceiling to allow for fitting and removal of the cover). The position
of the Mira Extreme and the shower fittings must provide a minimum gap of
25 mm between the spillover level of the shower tray/bath and the handset.
This is to prevent backsiphonage.
1.7. The Mira Extreme must be fitted onto the finished wall surface; that is, on top
of the tiles.
Do not fit the Mira Extreme to the wall and then tile up to the sides
of the casing. (Small pillars moulded on the back of the case allow air to
circulate and water to drain from behind the appliance.)
1.8. When fitting the Mira Extreme with wall entry inlet supplies, it is recommended
that the supply pipework is sealed to the wall to prevent water from leaking
back into the wall.
1.9. In solid wall installations, the supply pipework should be installed within
ducting to allow some free lateral movement when making supply connections.
2. Electrical
2.1. Do not turn on the electrical supply until the plumbing has been
completed.
2.2. The mains supply must be 230–240 V at 50 Hz connected to the appliance
via a double pole switched 3 Amp fused connection unit (not supplied) with a
minimum 3 mm contact separation gap in each pole.
2.3. Fuses do not give personal protection against electric shock.
2.4. The Mira Extreme must be earthed by connecting the supply-cable earth
conductor to the earth terminal.
Supplementary bonding: Within the bathroom or shower room, all accessible
conductive parts of electrical equipment and extraneous conductive parts that
are likely to introduce earth potential, must be electrically bonded to earth
using a minimum cable size of 4.0 mm
2
if the cable is not mechanically
protected (2.5 mm
2
if mechanically protected).