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Cont ...
2 LOCATION - TWIN PUMP
2.26
Hot water cylinder or storage tank:
When a hot water cylinder or storage tank
is used, ensure the pipework size from the cold water storage to the hot water
storage is of adequate size and a minimum of 22 mm.
2.27
Hot water supply:
The pump
must be
supplied with a
dedicated feed
direct
from the hot water cylinder or storage tank, ensuring an air free connection to the
cylinder, which can be made by one of the methods shown in Fig. 6. We
recommend the use of the Stuart flange TE Part No: 27800 or the Stuart
flange SE Part No: 27900.
2.28
Expansion pipe:
When the method of connection is to be made via the
expansion pipe, the cold water storage cistern should be at least 1 metre above
the top of the hot water cylinder.
2.29
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.
Positive Duty Twin Pump System
Fig. 5
Fig. 6
G 1 Stuart flange
top entry (TE) (Part
No. 27800) with
22 mm pipework to
pump.
Factory installed G ¾
secondary tapping with
22 mm pipework to pump.
or
Side mounted Stuart
flange side entry (SE) (Part
No 27900) with 22 mm
pipework to pump.
Static outlet Pressure
Max. 6 m
Max. inlet head
6
m
Min. inlet head
0.5
m
