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USER MANUAL – Release 1.2 of 01/01/2010
Page 32 of 191
Version: 02/03/2010
Un 1
High evaporator water inlet temperature unloading function set-point in
cooling mode
-50.0
-58
110
230
°C
°F
Dec
int
Un 2
High evaporator water inlet temperature unloading function differential in
cooling mode
0.1
0
25.0
45
°C
°F
Dec
int
Un 3
High evaporator water inlet temperature unloading function
activation delay
0
250
Secs
10 secs
Un 4
High evaporator water inlet temperature unloading function maximum
activation time
0
250
Min
Un 5
High evaporator water inlet temperature unloading function control probe
1
66
Low evaporator water outlet temperature
Un 6
Low evaporator water outlet temperature unloading function set-point
-50.0
-58
110
230
°C
°F
Dec
int
Un 7
Low evaporator water outlet temperature unloading function differential
0.1
0
25.0
45
°C
°F
Dec
int
Un 8
Low evaporator water outlet temperature unloading function activation delay
0
250
Secs
10 secs
Un 9
Low evaporator water outlet temperature uloading function maximum
activation time
0
250
Min
Un 10
Low evaporator water outlet temperature unloading function control probe.
1
66
High condensing pressure/ temperature in Cooling and Heating mode
Un 11
High condensing pressure/temperature unloading function set point
-50.0
-58
0.0
0
110
230
50.0
725
°C
°F
Bar
Psi
Dec
int
Dec
int
Un 12
High condensing pressure/temperature unloading function differential
0.1
0
0.1
1
25.0
45
14.0
203
°C
°F
Bar
Psi
Dec
int
Dec
int
Low evaporating pressure – active on all functions
Un 13
Low evaporating pressure unloading function set point
0.0
0
50.0
725
Bar
Psi
Dec
int
Un 14
Low evaporating pressure unloading function differential
0.1
1
14.0
203
Bar
Psi
Dec
int
Un 15
Low evaporating pressure maximum activation time
0
250
Min
Un 16
Max number of capacity steps per circuit during unloading working mode
1
4
Un 17
Minimum working time in unloading after function activation (only for
compressor with unloaders)
0
250
Secs
Outdoor fan speed control
Parameter Description
min
max
um
Resolution
FA1
Fan speed control
0 = Not managed
1 = always on
2 = ON/OFF activation with steps
3 = ON/OFF continuous activation with steps (see relevant chapter)
4 = proportional speed regulator
0
4
FA2
Outdoor fans activation
0 = depending on the compressor
1 = independent from the compressor
0
1
FA3
Outdoors fans activation time at full speed at start. Fans are activated at full
speed at start for the FA03 period independently from the conditions. After
this period the fan speed modulates according to the conditions
0
250
Secs
FA4
Fan phase displacement analogue output number 5
0
8
micro
sec
250
µ
s
FA5
Fan phase displacement analogue output number 6
0
8
micro
sec
250
µ
s
FA6
Outdoor fan distribution (see relevant chapter)
0= unique (Circuits 1 / 2 / 3 / 4)
1= separate
2= unique by circuits (1 – 2) / (3 – 4)
0
2
FA7
Pre-ventilation in cooling mode before compressor ON. Defines period while
the fans are activated at full speed before the (first) compressor activation
(only if FA01 = 4)
0
250
Secs
Outdoor fans working in cooling mode
FA8
Minimum outdoor fan speed in cooling mode
Defines the minimum oudoor fan speed during proportional regulation in
cooling mode. It is expressed as percentage (100% = 10V) .
0
100
%
FA9
Maximum outdoor fan speed
Defines the maximum outdoor fan speed during proportional regulation in
cooling mode. It is expressed as percentage (100% = 10V).
0
100
%
FA10
Proportional regulation
Condensing pressure/temperature value corresponding to the minimum
outdoor fan speed defined at FA07
Step regulation
1
st
STEP Set
: Condensing pressure/temperature value corresponding to the
activation of the 1
st
outdoor fan step.
-50.0
-58
0.0
0
110
230
50.0
725
°C
°F
Bar
Psi
Dec
int
Dec
int
