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 28 mm.
2.27 Hot water supply: The pump must be supplied with a dedicated feed direct
from the hot water cylinder or storage tank which should be via a secondary
dedicated tapping (see Fig. 6).
Do not connect to the mains.
2 LOCATION - HOT WATER INSTALLATION
Fig. 5
Hot water
pump
Static inlet pressure
Min. 1 m
Max. 10 m
Static outlet pressure
Max. 13 m
Fig. 6
with rising
28 mm offset
expansion pipe
and pump.
Factory installed
secondary tapping with
28 mm pipework to
pump.
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