7
Fig. 3 Pump above hot-water cylinder outlet
It is recommended that the pump is positioned at the base of the
hot-water cylinder.
If the pump is positioned above the outlet of the hot-water
cylinder, ensure that the pipework to the pump has an anti-gravity
or downward loop. This will help prevent air locks.
The inlet head from the water level in the cold-water storage tank
to the pump suction port must be within the minimum and
maximum values. See section 8. Technical data.
TM04 6987 1310
Cold-water supply
to cylinder
Expansion pipe and
domestic hot-water supply
Hot-water supply
to pump
Anti-gravity loop
Hot-water cylinder thermostat set to
a maximum of 60 ºC
Hot-water
cylinder
Supply to shower
Hot
Cold
Surrey
flange
Low-voltage pumps must be
connected via transformer only.
Pump
Cold-water supply
to pump
22 mm service
gate valves
Grundfos.bk Page 7 Thursday, April 22, 2010 10:28 AM
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