Page 29
User, Installations and Maintenance Manual
Parameter Description
Range
Default
Notes
P20
Temperature threshold for solar drain valve
/ solar collector roll-up shutter action in solar
mode integration = 2 (direct control of thermal
solar system solar)
100÷150°C
140°C
Modifiable (2)
P21
Lower water probe temperature value to stop
the heat-pump in photovoltaic mode integration 30÷70°C
62°C
Modifiable
P22
Upper water probe temperature value to stop
the electrical heater in photovoltaic mode
integration
30÷80°C
75°C
Modifiable
P23
Photovoltaic mode integration
0 = permanently deactivated
1 = activated
0
Modifiable
P24
Off-peak working mode
0 = permanently deactivated
1 = activated with ECO
2 = activated with AUTO
0
Modifiable
P25
Offset value on upper water temp probe
-25÷25°C
0°C
Modifiable
P26
Offset value on lower water temp probe
-25÷25°C
0°C
Modifiable
P27
Offset value on air-inlet temp probe
-25÷25°C
0°C
Modifiable
P28
Offset value on defrosting temp probe
-25÷25°C
0°C
Modifiable
P29
Antilegionella starting hour
0÷23 hours
23 hours
Modifiable
P30
Hysteresis on upper water probe for electrical
heater working
2÷20°C
7°C
Modifiable
P31
Heat-pump working period in AUTO mode for
heating rate calculation
10÷80 min
30 min
Modifiable
P32
Temperature threshold for electrical heater
usage in AUTO mode
0÷20°C
4°C
Modifiable
P33
Electronic-expansion valve (EEV) control
0 = permanently deactivated
1 = activated
0
Modifiable (1)
P34
Superheating calculation period for EEV
automatic control mode
20÷90s
30 s
Modifiable (1)
P35
Superheating setpoint for EEV automatic
control mode
-8÷15°C
4°C
Modifiable (1)
P36
Desuperheating setpoint for EEV automatic
control mode
60÷110°C
88°C
Modifiable (1)
P37
EEV step opening during defrosting mode
(x10)
5÷50
15
Modifiable (1)
P38
Minimum EEV step opening with automatic
control mode (x10)
3~45
9
Modifiable (1)
P39
EEV control mode
0= automatic
1 = manual
0
Modifiable (1)
P40
Initial EEV step opening with automatic control
mode / EEV step opening with manual control
mode (x10)
5÷50
25
Modifiable (1)
P41
AKP1 temperature threshold for EEV KP1 gain -10÷10°C
-1
Modifiable (1)
P42
AKP2 temperature threshold for EEV KP2 gain -10÷10°C
0
Modifiable (1)
P43
AKP3 temperature threshold for EEV KP3 gain -10÷10°C
0
Modifiable (1)
P44
EEV KP1 gain
-10÷10
2
Modifiable (1)
P45
EEV KP2 gain
-10÷10
2
Modifiable (1)
P46
EEV KP3 gain
-10÷10
1
Modifiable (1)
P47
Maximum allowed inlet temperature for heat-
pump working
38÷43°C
43°C
Modifiable
P48
Minimum allowed inlet temperature for heat-
pump working
-10÷10°C
-7°C
Modifiable
