
7.2.5 HP unit control
T he HP unit control based on:
1) Outgoing water temperature (measured by Outgoing water sensor on HP unit)
2) Outgoing water temperature and Room air temperature (measured by sensor on board of the Remote controller)
3) Buffer tank temperature (measured by Buffer tank sensor)
4) Buffer tank temperature and Room air temperature
5) DHW tank temperature (measured by DHW tank sensor)
During Heating/Cooling operations, Par4100 shall be set to select the ON/OFF of the HP unit based on either the
water temperature and the Room air temperature or only water temperature settings.
The operation by water temperature can be “Outgoing water temp.” or “Buffer tank temp.”. If Par5111 is set to
“enable” for Buffer tank temp. sensor, the operation shall be based on Buffer tank temp..
In case of the operation by Room air temperature and reaching the set point,
- based on Outgoing water temp: HP unit shall be ON/OFF
- based on Buffer tank temp: the additional water pump in the applicable zone shall be ON/OFF
Please refer to the following table and set the parameter correctly for enable/disable of Buffer tank (Par5111), the
Main water pump setting (Par4200), and additional water pump setting (Par4200, 5148, 5149).
Parameters
Level
Parameter
Function description
Display & Input value
Remarks
Group Code
Default
min.
Max.
Unit
I
41
00
T he HP unit turns ON/OFF based on
0=Room set point
1=Water set point
1
0
1
-
I
42
00
T ype of configuration of Main water pump
0=always ON
1=ON/OFF based on Buffer tank temperature
2=ON/OFF based on Sniffing cycles
0
0
2
-
I
51
07
T erminal 7-8 : DHW tank temperature probe
0=disable
1=enable
0
0
1
-
I
51
11
T erminal 11-12 : Buffer tank temperature probe
0=disable
1=enable
0
0
1
-
To be set to
the following
combinations
Par5111=0
→Par4200=0 or 2
Par5111=1
→Par4200=0 or1 or 2
I
42
20
T ype of operation of additional water pump
0=disable
1=depending on Main water pump setting
2= depending on Main water pump setting but always
OFF when the DHW mode is activated
3= always ON, apart if any alarms are activated or if
the HP unit is in OFF mode.
4=ON/OFF based on Room air temperature
0
0
4
-
59
7. Unit Management
Par5111
Buffer temp.
Par5107
DHW temp.
Par4100
HP unit ON/OFF
Par4200
Main water pump
Par4220
additional water pump
1) Outgoing water temp.
0=disable
1=Water set point
0=always ON
2=sniffing cycles
2) Outgoing water temp.
and Room air temp.
0=Room set point
3) Buffer tank temp.
1=enable
1=Water set point
0=always ON
1=Buffer tank temp.
2=Sniffing cycles
4=based on room temp.
4) Buffer tank temp.
and Room air temp.
0=Room set point
5) DHW tank temp.
1=enable
Содержание AEYC-0639U-CH
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