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2 location - cold water installation – Stuart Turner Monsoon Extra U1.4 bar Single User Manual

Page 7

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2.26

Non-Preferred Pump Location: The pump must be located with at least 1 metre

flooded suction at all times.

If it is not possible to locate the pump in the preferred area due to site limitations

and it is necessary to position the unit in the loft, or in a position above the

secondary tapping that feeds the pump, then there is an increased risk of air

locks. This risk must be eliminated.

The following method will help to overcome the problem:

A “U” bend or downward loop in the supply pipe to the pump of 350 mm depth

before rising to the pump should ensure the cylinder vents its air up the

expansion pipe, not up the pump feed

(Fig. 5).

2 LOCATION - COLD WATER INSTALLATION

2.27

The cold water supply: The supply must be AIR FREE and have a

DEDICATED CONNECTION to the tank which should be via a tank connector,

positioned at a slightly lower level (25 mm minimum) than the feed pipe to the hot

water

cylinder.

Do not connect to the mains.

2.28

Location: The pump must, for optimum performance, be sited as close as

possible to and never more than 4 metres from the HOT WATER cylinder. The

pump should always be sited BELOW the HOT WATER take-off from the cylinder.

Max. inlet head

10

m

(

8

m for U1.4)

Min. inlet head

1

m

350

mm

min.

Least preferred area

Fig. 5

Fig. 6

Cold water
pump

Static inlet pressure

Min. 1 m

Max. 10 m

Static outlet pressure

Max. 13 m