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INSTALLER SETTING
Domestic hot water - DHW heating duration
Domestic hot water - DHW electric re-heating
The following settings can be used to limit the duration of DHW heating and DHW boost heater:
- Domestic hot water - DHW heating duration - Active time:
Maximum time how long DHW heating by heat pump cycle is activated,
until operation mode returns to space heating
- Domestic hot water - DHW heating duration - Stop time:
After DHW heating by heat pump cycle has stopped, it won’t commence
before ‘Stop time’ time has elapsed. The Boost heater might be used.
- Domestic hot water - DHW electric re-heating - DHW heater delay time:
Time gap between start of DHW heating by cycle and release of DHW
boost heater.
Time
0
1
0
1
0
1
DHW ON by
User or
Schedule
DHW heating
by heat
pump cycle
DHW boost
heater
activated
07:30 07:40
07:50 08:00 08:10
08:20
08:30 08:40 08:50 09:00
A
S
D D
A: Active time
S: Stop time
D: DHW heater
delay time
A
1 = Active
0 = Not active
Time Event
7:30
The User activates the DHW function in the Remote controller.
DHW heating starts by using the heat pump cycle, as thermo-on condition is reached.
7:45
The DHW boost heater is activated, even though the ‘DHW boost heater delay time’ has
not yet ended. This is because the DHW temp. reached the ‘Compressor cycle limit
temp.’ The compressor cycle turns off to prevent High-pressure error. The ‘Active time’
immediately ends and ‘Stop time’ counter starts.
7:50
The ‘DHW heater delay time’ (20 min) ends, but it has no effect, because the heater is
already operating.
7:55 After reaching the DHW set point, DHW heating stops.
8:10
The DHW temperature has dropped below set point again, but the DHW heating is not
started due to ‘Stop time’ (30 min).
8:15
After end of ‘Stop time’, DHW heating commences using the heat pump cycle only,
because the DHW temp. is lower than ‘Compressor cycle limit temp.’
8:35
The DHW boost heater is enabled, after boost heater delay time. The heater starts,
because DHW target temp. is not reached. The Compressor cycle remains active,
because DHW temp. is still lower than ‘Compressor cycle limit temp.’
8:45
After end of ‘Active time’, the heat pump cycle stops. DHW heating commences using
the Boost heater only.
8:50 The DHW target temperature is reached. The heater stops.
8:55 The User turns off DHW heating in the Remote controller.
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