MAXA HWA1-A 0140, Manual

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HWA1-A
Air/water chillers with axial fans
23
18.6 CIRCULATOR PUMP CONFIGURATION PARAMETERS
Parameter Description Unit Default Range Visibility Allowed configurations Note
P01 Pump ON Compressor ON delay sec 20 0÷255 INSTALLER
P02 Pump OFF compressor OFF delay min 2.0 0÷255 INSTALLER
P03 Pump operation mode / 1 0÷1 INSTALLER
0 = continuous operation
1 = operation according to the thermoregulation
P04 Set of the pump in antifreeze °C 5 -127÷127 INSTALLER
P05 Pump’s h ysteresis in antifreeze mode °C 2.0 0.0÷25.0 INSTALLER
P06 Pump proportional band in heating °C Based on the model 0.0÷25.0 INSTALLER
P07 Maximum speed of modulating pump % 100 0÷100 INSTALLER
P08 Minimum speed of modulating pump % Based on the model 0÷100 INSTALLER
P09 Set ΔT [°C] T
water inlet/outlet
of modulating pump °C 5 -127÷127 INSTALLER
P10 ΔT of modulating pump °C 2.0 0.0÷25.0 INSTALLER
P16
Time between 2 activations of the pump in
periodic mode
min 20 0÷600 INSTALLER
P17 Time of operation of the pump in periodic mode sec 90 0÷255 INSTALLER 0 = deactivation of periodic mode
P18 Enabling of unique pump operation in network / 0 0÷1 INSTALLER
0 = deactivated function
1 = enabled function
P19
Unique pump operation in network in presence
of offline machines
/ 0 0÷1 INSTALLER
18.7 DEFROSTING PARAMETERS
Parameter Description Unit Default Range Visibility Allowed configurations Note
d02 Pressure during initial defrosting bar 5.8 -50.0÷80.0 INSTALLER Parameters enabled only if are configured by default
d08
Minimum interval between 2
consecutive defrosting cycles
min 0 0÷255 INSTALLER
After a time equal to d08, the circuit enters in
defrosting mode.
18.8 COMPRESSOR CONFIGURATION PARAMETERS
Parameter Description Unit Default Range Visibility Allowed configurations Note
n01 Output power from PC1 % Based on the model 0÷100 INSTALLER
n02 Output power from PC2 % Based on the model 0÷100 INSTALLER
n06 Compressors Lock Mode for installer / Based on the model 0÷1 INSTALLER
0 = Operation
1 = Lockout
C11
Operation time of compressor with
minimum frequency
sec 60 0÷255 INSTALLER
18.9 CONFIGURATION PARAMETERS OF “GI” Module – PLANT MANAGEMENT – (Optional)
Parameter Description Unit Default Range Visibility Allowed Configurations Notes
H10 Enablement of DHW mode / 0 0÷2 INSTALLER
H29
Configuration of the analog
input ST7E
/ 0 0÷49 INSTALLER
0 = input not assigned
6= Sanitary water temp. remote sensor
ST7E, ST7E terminals
H30
Configuration of the analog
input ST8E
/ 0 0÷49 INSTALLER
0 = input not assigned
41=Plant water temp. remote sensor
ST8E, ST8E terminals
H90
Configuration of the digital
output DO5E
/ 0 0÷47 INSTALLER
0 = output not assigned
6 = Sanitary valve
25 = Double set point valve
43 = Secondary circulator
D05E, D05EN terminals
H57
Configuration of the digital input
ID3E
/ 0 0÷26 INSTALLER
0 = Function not active
26 = Double set point
28 =Sanitary mode call
ID3E, ID3E terminals
H129
Enablement of double setpoint
function
/ 0 0÷4 INSTALLER
0 = Function not active
1 = Classic mode
2 = Double setpoint in the summer
3 = Double setpoint in the winter
4 = Double setpoint in the summer and winter
H130
Heating with sanitary
accumulator
/ 0 0÷1 INSTALLATORE
0 = Function not active
1 = in heating always turned towards the sanitary
19 ALARMS MANAGEMENT
Herein below the main alarms messages are reported.
Note: When manual reset is performed after N time of interventions, the alarm counting occurs with minute granularity (ie
multiple interventions within 1 minute are counted as a single intervention).
19.1 E000 – REMOTE ON/OFF
The E000 code will be displayed when the unit is controlled from a remote digital input.
19.2 E001 – HIGH PRESSURE
If the on board pressure transductor detects a pressure higher than 41,4bar, the alarm will be activated.
In this case the compressor will stop immediately via software. The alarm will reset when the pressure decreases under 32,4 bar.
If the number of alarm interventions in one-hour is equal to 3 times, it will become manual reset.
In addition, there is an on-board unit pressure switch that when it detects a pressure greater than 42±1.5bar, disconnects the
compressors from power supply. The reset is manual of the pressure switch and is possible at 33±2bar.