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USER MANUAL – Release 1.2 of 01/01/2010
Page 39 of 191
Version: 02/03/2010
FS 20
Maximum antilegionella activation time
The antilegionella cycle is disabled after the time FS20 even though the
working set point is not achieved.
0
250
min
FS 21
Heaters deactvation band for antilegionella function
The electric heaters activated for the antilegionella function are disabled
(before expiration of FS20) if the water temperature exceeds FS14
(antilegionella set)+FS21
0.1
1
25.0
45
°C
°F
dec
int
FS 22
Water set point for solar panels integration.
Defines the solar panels working set point.
FS24
FS25
°C
°F
dec
int
FS 23
Proportional band for solar panels integration
0.1
1
25.0
45
°C
°F
Dec
int
FS 24
Minimum set for solar panels integration
Minimum limit for the solar panels set point.
-50.0
-58
FS25
°C
°F
Dec
int
FS 25
Maximum set for solar panels integration
Maximum limit for the solar panels set point.
FS24
110
230
°C
°F
Dec
int
FS 26
Delay on inversion of domestic hot water outputs from water pump activation
0
250
sec
FS 27
Delay on disabling of domestic water pump from outputs inversion
0
250
sec
FS 28
Domestic hot water pump operating mode:
0 = On demand. The pump is activated only when domestic hot water is
required.
1 = Continous. The pump is always active when the unit is active. FS26 and
FS27 delays are ignored
0
1
FS 29
Minimum domestic hot water function interruption in case of disabling from
domestic hot water safety probe and minimum time between two interruptions
0
250
sec
FS 30
Domestic hot water interruption set point.
Defines the temperaute level sensed by the domestic hot water safety probe
for the interruption of domestic water function
-50.0
-58
110
230
°C
°F
dec
int
FS 31
Domestic hot water interruption differential.
Defines the differential between disabling and reactivation of the domestic hot
water function
0.1
1
25.0
45
°C
°F
dec
int
FS 32
Superheating set point for activation of the charge modulating valve.
After activation of the c sanitary water function the circuit charge
modulating valve is activated if the superheating is higher than FS32
-50.0
-58
110
230
°C
°F
dec
int
FS 33
Superheating band for deactivation of the charge modulating valve
0.1
1
25.0
45
°C
°F
dec
int
FS 34
Charge modulating valve maximum activation time
1
250
sec
10 sec
FS 35
Inlet water temperature set point for modifying the charge modulating valve
set point and band.
-50.0
-58
110
230
°C
°F
dec
int
FS 36
Inlet water temperature band for modifying the charge modulating valve set
point and band.
0.1
1
25.0
45
°C
°F
dec
int
FS 37
Modified superheating set point
-50.0
-58
110
230
°C
°F
dec
int
FS 38
Modified superheating band
0.1
1
25.0
45
°C
°F
dec
int
FS 39
Charge modulating valve ON time
1
250
sec
FS 40
Charge modulating valve OFF time
1
250
sec
FS 41
Forced outdoor fans activation during domestic hot water function activation.
After activation of the water pump and before the completion of the valves
switching the outdoor fans are forced to work at the speed defined on FS41
0 = function disabled
1 = During the FS26 the outdoor fan speed modulates according to the
condensing temperature/pressure
2 = During the FS26 time outdoor fans areforced to the
night function
speed
0
2
FS 42
Low condensing pressure/temperature threshold for forced outdoor fans
function disabling.
If the condensing pressure/temperature drops below the FS42 level during
outdoor fans forced activation the same is disabled
-50.0
-58
0.0
0
110
230
50.0
725
°C
°F
Bar
Psi
dec
int
dec
int
FS 43
Low evaporating pressure threshold for forced outdoor fans function disabling.
If the condensing pressure/temperature drops below the FS42 level during
outdoor fans forced activation the same is disabled
-50.0
-58
0.0
0
110
230
50.0
725
°C
°F
Bar
Psi
dec
int
dec
int
FS 44
Enabling of anti-freeze prevention during domestic hot water production on
single circuit units. Active in heating function only
For preventing for possible antifreeze alarms due to defrost cycles, if the
evaporator water outlet temperature drops below the value defined on
parameter FS45 and the external temperature is lower than FS47 the unit is
switched to heating function until the water temperature goes higher than
FS45+FS46
0
1
FS 45
Antifreeze prevention evaporator outlet water temperature set point
-50.0
-58
110
230
°C
°F
dec
int
FS 46
Antifreeze prevention evaporator outlet water temperature band
0.1
1
25.0
45
°C
°F
dec
int
FS 47
Antifreeze prevention external air temperature set point
-50.0
-58
110
230
°C
°F
dec
int
