General
This function allows temporary lux, mixing valve and hot
water circulation.
Temporary lux (extra hot water)
If an immersion heater is installed in the tank it can be
permitted to produce hot water, at the same time as the
heat pump prioritises heating.
Mixing valve
A temperature sensor reads the temperature of the out-
going hot water to the domestic hot water and adjusts
the mixing valve from the water heater until the set
temperature has been reached.
Hot water circulation (VVC)
One pump can be controlled for the circulation of the
hot water during selectable periods.
Pipe connections
Mixing valve
The mixing valve (FQ1) is located on the outgoing hot
water line from the water heater according to the outline
diagram.
AB
A
B
႑
Connect the incoming cold water via
the T-pipe to the port B on the mix-
ing valve (closes at signal).
႑
Connect the mixed water to the do-
mestic hot water taps from the mix-
ing valve to the common port AB
(always open).
႑
Connect the outgoing hot water from the water heater
to the mixing valve to port A (opens on signal)
Temperature sensor
႑
Temperature sensor, outgoing hot water, (BT70) in-
stalled in a suitable place after the mixing valve (FQ1).
Install the temperature sensors with cable ties with the
heat conducting paste and aluminium tape. Then insulate
with supplied insulation tape.
NOTE
Sensor and communication cables must not be
placed near power cables.
AXC 50Chapter 6 | Hot water comfort20
6 Hot water comfort
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