Parameters
Parameters
Level
Parameter
Function description
Display & Input value
Remarks
Group Code
Default
min.
Max.
Unit
I
31
32
C onditions to be available DHW heaters
0=always enabled
1=depends on Outdoor air temperature
1
0
1
-
I
31
33
Outdoor air temperature to enable DHW heaters
-5.0
-20.0
20.0
0.5°C
I
31
34
Outdoor air temperature hysteresis to disable DHW
heaters
5.0
0.5
10.0
0.5°C
Level
Parameter
Function description
Display & Input value
Remarks
Group Code
Default
min.
Max.
Unit
I
46
00
B ackup heater type of function
0=disable
1=Replacement mode
2=Emergency mode
3=Supplementary mode
0
0
3
-
Par4600 and Par4700
are synchronized
Par4600=1, 2, 3
→ Par=4700=0
Par4700=1, 2
→ Par4600=0
I
51
46
T erminal 46 : DHW Electric heater or Backup heater
0=DHW Electric heater
1=Backup heater
0
0
1
-
(3.0°C)
(-5.0°C)
Outdoor air temperature
to enable DHW heaters
DHW hysteresis
Outdoor air temperature
DHW heater
ON
OFF
Note1: Terminal46 (Electric heater) digital output can be set by Par5146, for the DHW Electric heater output, or
for the Backup heater.
If the digital output is “DHW Electric heater” the digital output follows the logic explained “DHW heater
only”, “Heat pump + Heater” and “Legionella prevention function”.
If the digital output is “Backup heater” the digital output follows the logic explained “Backup heater”
Note2: If “Backup heater” is enabled as 1, 2 or3 by Par4600, the “DHW Over boost set point” will not be
available.
Digital Output “Electric heater”
Conditions to be available DHW heaters “Always enabled” or “depends on Outdoor air temperature” shall be
selected by Par3132.
In case of “depends on Outdoor air temperature”, the Outdoor air temperature which turns ON DHW heaters shall
be set by Par3133.
106
8. Domestic Hot Water Production
Summary of Contents for AEYC-0639U-CH
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