Stuart Turner Monsoon U2.0 bar Single - Manual (Page 6)

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Cont ...
2.25 Preferred pump location: The preferred pump location is at floor level next to
the hot water cylinder or a level that is below the secondary tapping that feeds
the pump. This will ensure the pump has access to an air free water supply
which is important for trouble free operation (Figs. 4 & 5).
Pump location is also dependent on limitations of the static inlet and outlet heads
of the installation. For guidance on limitations and recommended location,
consult the following relevant section for hot or cold water installation.
2.26 Non-preferred pump location: 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 measure is a suggestion that may 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. 3).
Max. inlet head
12
m (
8
m U2.0 bar)
Min. inlet head
0.5
m
Negative head
Least preferred area
200
mm
min
350
mm
min
Max. outlet head
12
m
(8
m U2.0 bar)
Fig. 3