Mira vigour User's Guide download pdf (Page 11)

INSTALLATION

General

1. Do not take risks with plumbing or electrical equipment.

2. Do not install the shower unit in a position where it could become frozen.

3. Isolate electrical and water supplies before proceeding with the installation of

the shower unit.

4. The shower unit must be fed from a cold water storage cistern and hot water

cylinder with equal pressures. The shower unit must not be connected to a mains

cold water supply, unvented high pressure systems or multi-point/combination

gas water heaters.

5. The installation must be carried out by a competent installer.

6. Decide on a suitable position for the shower unit (minimum distance of 200 mm

from the ceiling to allow for the tting and removal of the cover). The position of

the appliance and the shower ttings must provide a minimum gap of 25 mm

between the spillover level of the shower tray/bath and the handset, to prevent

backsiphonage.

7. Avoid layouts where the hose will be sharply kinked. This may reduce the life

of the hose.

8. The shower unit is designed for surface mounting only and must not be recessed

into any wall or cavity, or tiled up to, as this prevents air circulating to the rear

of the unit.

Electrical

1. The shower unit 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

if the cable is not mechanically protected

(2.5 mm

if mechanically protected).

2. Power supply cable must have a minimum cross sectional area of 1 mm².

3. Power supply must be 230-240 V at 50 Hz. The isolating switch must be double

pole switched, fused at 3 Amps, with at least a 3 mm contact separation gap to

each pole.

4. Do not turn the electrical supply on until all plumbing connections have been

made and the shower unit has been commissioned as the unit must not be

operated dry.

5. A 30 mA RCD (residual current device) must be tted. This may be part of the

consumer unit or a separate unit.

6. Fuses do not give personal protection against electric shock.

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Mira vigour User's Guide Page 11