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When the E-heater button on the control panel has been turned on manually, on the display TS2 (E-heater off
temperature) appears and it can be directly modified instead of TS1 (tank setting temperature).
11.4.7 ON/OFF contact
When ON/OFF contact is closed, and the controller is ON, the unit can work and the running mode is decided by the setting of the
controller.
When ON/OFF contact is closed, but the controller is OFF, the unit can't work.
When ON/OFF contact is opened, but the controller is ON, the unit can't work (with the exception of external pump).
If the controller is ON, and the ON/OFF status is changed from opened to closed, the unit will work by the previous settings of the
controller (auto-restart).
If the unit was previously in stand-by, in case the ON/OFF status is changed from opened to closed, the unit remains in stand-by.
A signal/warning in case of remote OFF signal (opened contact) is displayed. In such a way the customer can understand why the
unit is not working.
11.4.8 Contact for photovoltaic plant integration
The ON/OFF contact can be configured so that a photovoltaic plant, in max production periods, can be used to obtain the max
value of hot water by the unit (set the parameter 35 to 1). When the contact is closed (activation by FV plant), the tank setting
temperature TS1 is increased to the max possible value compatibly with working limits that are indicated in Paragraph 17.
11.5 PARAMETER CHECKING AND ADJUSTMENT
Some parameters can be checked and adjusted by the controller. Below is the parameter list.
Visibility
Parameter
U=user
no.
I=installer
0
I/U
Tank water setting temp. (TS1)
1
I
Water temp. difference TS6
2
I
E-heater off tank water temp. (TS2)
3
I
E-heater delay time
Week disinfection temperature TS3 (related to
4
I
upper tank temp T3)
5
I
High temp disinfection time t2
13
I
Disinfection start up time adjusting
14
I
Pump usage selection
15
I
Water circulation temp. setting
16
I
Offset for sanitary hot water circulation
17
I
Water difference temp. for solar pump restart
18
I
Offset for solar water circulation
19
I
Low outside temp. electrical heater activation
20
I
Electrical heater activation during defrosting
21
I
Disinfection period
32
I
E-heater activation for heat pump integration
33
I
E-heater activation hysteresis
35
I
ON/OFF contact configuration
A
U
Lower tank temp T2
B
U
Upper tank temp T3
C
U
Coil temp.
D
U
Return gas temp.
E
U
Ambient temp.
F
U
Hot sanitary/solar water temp.
G
U
EXV open steps
H
U
Effective water set for heat pump
Description
Range
Default
10 ~ 65°C
55°C
2 ~ 15°C
5°C
10 ~ 75°C
65°C
0 ~ 90
6
60 ~ 70°C
70°C
30 ~ 90 min
30 min
0~23
23
0/1/2
0
15 ~ 50°C
35°C
1 ~ 15°C
2°C
5 ~ 20°C
5°C
1 ~ 4°C
2°C
0/1
1
0/1
1
1 ~ 30 days
7 days
0/1
1
1 ~ 10°C
3°C
0/1
0
Actual testing value. Error code P1 will be shown in
0 ~ 99°C
Actual testing value. Error code P2 will be shown in
0 ~ 99°C
Actual testing value. Error code P3 will be shown in
-15 ~ 99°C
Actual testing value. Error code P4 will be shown in
-15 ~ 99°C
Actual testing value. Error code P5 will be shown in
-15 ~ 99°C
Actual testing value. Error code P6 will be shown in
0 ~ 125°C
case of a malfunction, no error if parameter14=0
10 ~ 47 step
If the working of the unit exceeds the region that is
indicated in Paragraph 17 for high water and air
10 ~ 65°C
temperatures, the effective water set is automatically
lowered on respect of TS1 that was set by the user.
UNICA
Sanitary water heat pump
Remarks
Adjustable (it can be also modified by
the user in normal function)
Adjustable
Adjustable
t * 5 min, Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
(0=disabled, 1=sanitary hot water
circulation usage, 2=solar water
circulation usage)
Adjustable
Adjustable
Adjustable
Adjustable
Adjustable
0=off, 1=on
Adjustable
0=off, 1=on
Adjustable
Adjustable
0=off, 1=on
Adjustable
0=on/off
1=photovoltaic
case of a malfunction
case of a malfunction
case of a malfunction
case of a malfunction
case of a malfunction
N*10 step
27
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