HWA1-A
Air/water chillers with axial fans
22
18.1
SET-POINT
’S
CONFIGURATION PARAMETERS
Parameter
Description
Unit
Default
Range
Visibility
Allowed configurations
Notes
Coo
First setpoint in cooling
°C
7.0
H03÷Co2
USER
Hea
First setpoint in heating
°C
45.0
He2÷H01
USER
San
DHW (sanitary) setpoint
°C
48.0
H02÷H01
USER
Co2
Second setpoint in cooling
°C
18.0
Coo÷H03
USER
He2
second setpoint in heating
°C
35.0
H02÷Hea
USER
18.2
CONFIGURATION PARAMETERS
Parameter
Description
Unit
Default
Range
Visibility
Allowed configurations
Notes
H01
Maximum set point in heating
°C
63.0
-50.0÷80.0
INSTALLER
H02
Minimum set point in heating
°C
25.0
-50.0÷80.0
INSTALLER
H03
Maximum set point in cooling
°C
25.0
-50.0÷80.0
INSTALLER
H04
Minimum set point in cooling
°C
5.0
-50.0÷80.0
INSTALLER
*H85
Configuration of digital input
DO7
/
0
0÷47
INSTALLER
0 = input not assigned
21= Defrosting signalization
24= Alarm signalization
31=Plant season signalization
47=Lock signalization
D07, D07N terminals
H126
Serial address
/
1
1÷200
INSTALLER
In case of several units installed in cascade
configuration, you have to assign different
addresses for each controller.
(*) Only for HWA1-A version
18.3
ALARM CONFIGURATION PARAMETERS
Parameter
Description
Unit
Default
Range
Visibility
Allowed configurations
Note
A08
Antifreeze alarm activation setting
°C
2
-127÷127
INSTALLER
A09
Antifreeze alarm hysteresis
°C
3.0
0.0÷25.5
INSTALLER
A16
Low pressure set in cooling operation
Bar
Based on the model
4,0÷80,0
INSTALLER
A27
Low pressure set in heating operation
/
1.3
0.0÷25.5
INSTALLER
18.4
SETTING PARAMETERS
Parameter
Description
Unit
Default
Range
Visibility
Allowed configurations
Note
b01
Band in cooling mode
°C
2,0
0÷10,0
INSTALLER
b02
Band in heating mode
°C
2,0
0÷10,0
INSTALLER
b03
Differential in DHW mode
°C
4,0
0÷10,0
INSTALLER
b05
Hysteresis cut-off of the compressor in cooling and
heating
°C
0.5
0.0÷25.5
INSTALLER
Recommended values included
between 1 and 1.5
Other different values can ensure
the proper operation of the unit
b06
DHW transitory output in heating
sec
45
0÷255
INSTALLER
b08
Enabling dynamic set
/
0
0÷1
INSTALLER
b09
Max Offset in cooling dynamic set
°C
3.0
-50.0÷80.0
INSTALLER
b10
Max Offset in heating dynamic set
°C
-3.0
-50.0÷80.0
INSTALLER
b11
Outdoor set temperature in cooling dynamic set
°C
25
-127÷127
INSTALLER
b12
Outdoor set temperature in heating dynamic set
°C
15
-127÷127
INSTALLER
b13
ΔT in co
oling
°C
-10.0
-50.0÷80.0
INSTALLER
b14
ΔT
in heating
°C
10.0
-50.0÷80.0
INSTALLER
b15
Setpoint regulation band from 0-10V analog input
°C
5.0
0.0÷10.0
INSTALLER
b16
Scan time of compressors start-up
sec
60
0÷255
INSTALLER
b20
Enabling of 0-10V/ratiometric input
/
0
0÷1
INSTALLER
0 = 0-10V input
1 = ratiometric input
b22
Thermoregulation Hysteresis cut-off plant sensor
°C
1,5
0.0÷25.5
INSTALLER
18.5
CONDENSATION PARAMETERS
Parameter
Description
Unit
Default
Range
Visibility
Allowed configurations
Notes
F05
Operation under compressor call
/
0
0 ÷1
INSTALLER
F06
Min fan speed
%
30
0 ÷100
INSTALLER
F07
Max silent fan speed in cooling mode
%
Based on the model
0 ÷100
INSTALLER
F08
Set of the pressure at the minimum speed of the fan in
cooling mode
Bar
16.0
-50.0÷80.0
INSTALLER
F09
Proportional band for modulation of the fan in cooling mode
Bar
9
0.0÷25.5
INSTALLER
F10
Delta cut-off fan adjustment
Bar
2.6
0.0÷25.5
INSTALLER
F11
Hysteresis cut-off
Bar
1.3
0.0÷25.5
INSTALLER
F13
Max fan speed in cooling mode
%
Based on the model
0 ÷100
INSTALLER
F14
Set of the pressure at the maximum fan speed in cooling
Bar
28
-50.0÷80.0
INSTALLER
F15
Min fan speed in heating
%
Based on the model
0 ÷100
INSTALLER
F16
Max. silent fan speed in heating mode
%
Based on the model
0 ÷100
INSTALLER
F17
Set of the pressure at the minimum fan speed in heating
Bar
15.0
-50.0÷80.0
INSTALLER
F18
Linear band for fan motor modulation in heating mode
Bar
7.0
0.0÷25.5
INSTALLER
F19
Max. fan speed in heating mode
%
Based on the model
0 ÷100
INSTALLER
F20
Set of the pressure at the maximum fan speed in heating
Bar
6.8
-50.0÷80.0
INSTALLER
F25
Time of forced free-cooling ventilation at 100%
Minuti Based on the model
0.0 ÷ 25.5
F26
Outdoor temperature Offset for free-cooling activation
°C
Based on the model -12.7 ÷ 12.7
F27
Free-cooling deactivation hysteresis
°C
Based on the model -12.7 ÷ 12.7
Summary of Contents for HWA1-A 0140
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