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Key to symbols used in the system layouts:
Servicing Valve
Mixing Valve
Float Type Automatic
Air Vent (Bottle Valve)
Shower Handset
Domestic Hot Water
DHW
15 mm Diameter Pipe
Plumbing
Installation must be carried out in accordance with these instructions, and must be
conducted by designated, qualified and competent personnel.
1.
ATTENTION! Damage is likely to occur to the pump unit if it is allowed to run dry.
A minimum pump inlet head pressure of 1 metre must be ensured at all times.
2.
Do not fit a non return valve in suction line (inlet) pipework to the pump. The pump
must be free to vent to the supply tanks at all times.
3.
Pressure loss throughout the inlet pipework network must be kept to the minimum
possible to avoid operational difficulties. This will mean the use of shortest
pipe-runs, adequately sized for the maximum flow demand, and with the minimum
of restriction through elbows and fittings. Long pipe-runs should be avoided and
are best reserved for pipework from the pump outlet to shower fittings.
4.
Pipework configurations which can allow air locks to form should be avoided. For
inlet pipework, this should be achieved by utilising pipe-runs with a continuous
fall. For outlet pipework, either provide a continuously rising pipe-run, or if an "up
and over" pipe-run is unavoidable, fit a float type automatic air vent at the highest
point as shown in Figure 3 and 4.
5.
The pump must be sited as low as possible in relation to the water source and
mounted in a horizontal position with the outlet connection vertically upwards.
The operation of the flow switch will be impaired in any other position.
INSTALLATION
10
Check Valve
Pressure Switch
Pressure Accumulator
Float Operated Valve
Fixed Shower Head
22 mm Diameter Pipe
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