3. Check the water flow rate in the circuit during heating operation.
Tab.34 Accessing the parameter
Access
Signal
Description
Information \ EHC–06 menu
Water flow rate (AM056)
Wate flow rate in the system in l/min
4. Set the differential pressure valves so as to obtain a flow rate between
the threshold flow rate and the target flow rate.
Tab.35 Water flow rate
Unit
AWHP 4.5 MR
AWHP 6 MR-3
AWHP 8 MR-2
Threshold flow rate
l/min
7
7
9
Target flow rate
l/min
12
17
23
Important
If the flow rate drops below the threshold, the Flow rate warning
warning message appears on the home screen.
For more information, see
Main circulating pump, page 18
6.6
Setting the flow rate of the second circuit
Heating installations must be able to guarantee a minimum flow rate at all
times. If the flow rate is too low, the heat pump may shut itself down for its
own protection; the heating, cooling and domestic hot water functions are
then no longer guaranteed.
1. Set circuit A to frost protection mode to shut down the heating
demand.
The circulating pump for circuit A is shut down. If necessary,
disconnect the power supply of the pump to ensure it shuts down.
2. Create a heating demand on circuit B.
3. Check that the mixing valve is fully open by pushing the white tab fully
upwards.
4. Check the water flow rate of the second circuit. If necessary, open the
disconnector valve (position FILL) to adjust the pressure and flow rate.
Tab.36 Accessing the parameter
Access
Signal
Description
Information \ EHC–06 menu
Water flow rate (AM056)
Wate flow rate in the system
5. Set the circulating pump so as to obtain an optimal flow rate.
Tab.37 Water flow rate
Unit
AWHP 4.5 MR
AWHP 6 MR-3
AWHP 8 MR-2
Optimal flow rate
l/min
9-10
9-12
12-17
Important
If the flow rate drops below the threshold, the Flow rate warning
warning message appears on the home screen.
For more information, see
Circulating pump for second circuit, page 18
MW
-30
0
07
1
4-
2
3
6 Commissioning
62
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