3 Product description
10
993x0463x-mub-en – V02
2020/03
3.2.2
Pump [specialist]
The pump can be completely isolated. It can be replaced and maintained without draining the
heating circuit system.
Isolation of the pump:
1.
Disconnect the expansion tank from the installation.
2.
Close the ball valves in the flow and the return (A-2, F-2).
3.
Remove the constant temperature controller PKR6 from the mixing valve.
4.
Turn the bypass screw of the mixing valve such that the slot is in a vertical position.
5.
Turn the nose of the valve cock such that the flow to the pump is closed (for flow on the
right: nose points downward, for flow on the left: nose points to the right; see below).
The mixing valve is now closed and drop tight.
3.2.3
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.
The mixing valve is equipped with a bypass which must be operated separately. Via this
bypass, cold return water is added to the flow of the HeatBloC
®
. This can result in an increase
of the flow rate of the HeatBloC
®
.
Mixing valve with flow on the right:
Position 10
and
bypass
closed:
Passage,
no mixing, flow temperature
consumer = flow temperature
boiler
Position 0:
100% mixing
flow temperature consumer =
return temperature consumer
10
0
Flow of the pump closed
