3 Product description
8
9945x1051x-mub-en – V03
2018/11
3.3
3-way mixing valve [specialist]
The 3-way mixing valve (C), driven by an electric actuator, adjusts the flow temperature of
the consumer circuit to the required value by means of the flow sensor and the controller.
Position 10: Passage, no mixing,
flow temperature consumer =
flow temperature boiler
Position 0:
100% mixing
flow temperature consumer =
return temperature consumer
3.4
Pump [specialist]
The pump can be completely isolated. It can be replaced and maintained without draining the
heating installation.
The pump must be connected to the power supply on site. The pump Grundfos Magna 3 must
be configured after the electrical commissioning. For the pump Grundfos UPMXL GEO 32-125
(only DN 40), no configuration is necessary.
Isolation of the pump
1.
Close the ball valves in the flow and return (A-2, F-2).
2.
Remove the actuator from the mixing valve.
3.
Turn the rotary knob of the mixing valve such that the black nose is directed to "VL zu"
(flow closed).
Cut off the expansion tank to depressurise the installation.
The mixing valve is now closed and drop tight. The pump can be dismounted.
10
0