Stuart Turner Techflo QT 50T - Manual (Page 6)

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2 LOCATION - SINGLE PUMP
2.25 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.
2.26 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 Single Pump System
Fig. 2
Static Inlet Pressure Min. 0.5 m Max. 8 m
Static Outlet Pressure Max. 8 m
Outlet head must be
below bottom of cold
water tank and able
to pass a minimum of
1 l/min of gravity flow