Kohler 1.1785.002 Installationshandbuch - Seite 12

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Note! There will be occasions when the hose retaining ring will not provide a suitable

solution for Fluid Category 3 installations, in these instances an outlet double

checkvalve must be fitted, this will increase the required supply pressure typically by

10kPa (0.1 bar). Double check valves fitted in the inlet supply to the appliance cause

a pressure build up, which affect the maximum static inlet pressure for the appliance

and must not be fitted. For Fluid category 5 double check valves are not suitable.

Electrical

Refer to section: 'Important Safety Information' first.

1. In a domestic installation, the rating of the electricity supplier's fuse and the

consumer unit must be adequate for the additional demand. All Mira Advance

electric showers are high power appliances. Voltage drop due to local heavy

demand will reduce the shower's performance.

2. The appliance must be earthed by connecting the supply-cable earth conductor

to the earth terminal. Any supplementary bonding and supply cable size must

conform to BS 7671.

3. As a guide only, and in accordance with BS 7671 we recommend close

circuit protection:

8.7 kW = 40 Amp

i.e.

9.8 kW = 45 Amp

1306246-W2-D

Electric

Shower

30 mm

Minimum

25 mm Minimum

Bath or Shower

Toilet or Bidet

FC5

Hose Retaining Ring fitted and shower fittings fixed

at a suitable height preventing dirty water backflow.

Zone of

Backflow

Risk

Minimum

Hand Basin

Tray FC3

25 mm

FC3