123
Note: If the Par4700=2 (Supplementary mode) is selected, the two parameters, Par4704 (Outdoor air temperature
to enable EHS) and Par4705 (Outdoor air temperature hysteresis to disable EHS), have to be defined to
manage the function correctly.
When the switching of the HP unit ON/OFF is based on water temperature set point, the EHS will be activated
according to the water temperature set point based on “Fixed set point” or based on “Climatic curve”.
When the switching of the HP unit ON/OFF is based on Room air temperature, the EHS will be activated according
to the Room air temperature set point based on “Heat pump control”.
Parameters
Level
Parameter
Function description
Display & Input value
Remarks
Group Code
Default
min.
Max.
Unit
I
47
00
E HS type of function
0=disable
1=Replacement mode
2=Supplementary mode
0
0
2
-
Par4600 and Par4700
are synchronized
Par4600=1, 2, 3
→ Par=4700=0
Par4700=1, 2
→ Par4600=0
I
47
01
C onditions to be available EHS
0=always enabled
1=depends on Outdoor air temperature
1
0
1
-
I
47
02
Outdoor air temperature to enable EHS and disable
compressor
-5.0
-20.0
20.0
0.5°C
I
47
03
Outdoor air temperature hysteresis to disable EHS and
enable compressor
5.0
0.5
10.0
0.5°C
I
47
04
Outdoor air temperature to enable EHS
(Supplementary mode)
5.0
-20.0
20.0
0.5°C
I
47
05
Outdoor air temperature hysteresis to disable EHS
(Supplementary mode)
5.0
0.5
10.0
0.5°C
I
51
41
Terminal 41-42 : EHS (External heat source for space
heating)
0=disable
1=enable
0
0
1
-
8. Domestic Hot Water Production
Summary of Contents for AEYC-0639U-CH
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