2.7 Delivery heights and electrical power
2
1
Fig. 7: Delivery heights and electrical power of the Wilo Stratos Para 25 / 1-7 T1pump
1: External operating mode via analogue-in 0-10V
2: External operating mode via pump shaft model
(PSM)
3
Unit description
These pump groups HGM / HGU enable circulation
of the heat conducting medium via the inlet. The
pump group HGM regulates the temperature of the
heat conducting medium via a motorised mixing
valve. This pump group with controllable tempera-
ture is therefore ideal for operating normal heating
systems with temperature regulation. Temperature
regulation of the Inlet takes place depending on
the inlet and return temperatures of probes S12
and S11.
The pump groups comprise the following: Pump,
ball valve for inlet and return flow, thermometer for
inlet and return flow, check valve against the
heating cycle and thermal insulation.
The pump group HGM also has an integrated
mixing valve
The pump group with the heating cycle mixing
valve consists of the components displayed in
n
Front part of the insulation (1)
n
Rear part of the insulation (2)
n
Insulation of the pump (3)
n
Unit inlet (4) equipped with secondary circuit
ball valve, a motorised mixing valve and a ther-
mometer
n
Unit return flow (5) equipped with secondary
circuit ball valve with an integrated check valve
and a thermometer
2
1
4
3
5
Fig. 8: Unit components
The two insulation half-shells (1, 2) serve as heat
insulation for the pump group and therefore enable
energy to be saved. The pump insulation was
developed to guarantee heat insulation and to pre-
vent the electric motor from overheating. The
check valve that is integrated into the body of the
return flow's ball valve prevents incorrect circula-
tion when the pump is switched off.
REMKO PUMP GROUPS HGM / HGU
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