Stuart Turner Techflo Turbo 15TNH - Manual (Page 6)

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Cont ...
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. 3 for Singles and Fig. 4 for Twins).
2 LOCATION - SINGLE PUMP
Single Pump System
Fig. 5
Max. static inlet pressure
8
m
Max. inlet head
8
m
Min. inlet head
0.5
m
Negative head
Least preferred area
200
mm
min
350
mm
min
Max. outlet head
8
m
Fig. 3 - Single Fig. 4 - Twin
hot water
services
least preferred area
200
mm
min
350
mm
Negative head
Max. inlet head
8
m
Min. inlet head
0.5
m
Max. outlet head
8
m