
Must be allowed to define the Outdoor air temperature below which the space heating or DHW will be heated by
Backup heater according the explanation above. Parameter to define whether the Backup heater is “always
enabled” or enabled only if the Outdoor air temperature is below the value set in parameter “Outdoor air
temperature to enable Backup heater”.
Note: If Terminal46 (Electric heater) will be enabled as Backup heater, the “External heat source for space
heating” will be not allowed. To guarantee correct operation, the two functions cannot be activated at the
same time.
Parameters
Level
Parameter
Function description
Display & Input value
Remarks
Group Code
Default
min.
Max.
Unit
I
46
10
C onditions to be available Backup heaters
0=always enabled
1=depends on Outdoor air temperature
1
0
1
-
I
46
11
Outdoor air temperature to enable Backup heaters and
disable compressor
-5.0
-20.0
20.0
0.5°C
I
46
12
Outdoor air temperature hysteresis to disable Backup
heaters and enable compressor
5.0
0.5
10.0
0.5°C
I
51
46
T erminal 46 : DHW Electric heater or Backup heater
0=DHW Electric heater
1=Backup heater
0
0
1
-
(5.0°C)
enable Backup heaters
and disable compressor
(-5.0°C)
hysteresis
Outdoor air temperature
(Selected by Par5109)
Backup heater ON
OFF
Compressor ON
OFF
112
8. Domestic Hot Water Production
Содержание AEYC-0639U-CH
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