MAXA HWA1-A 0140, Manual

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HWA1-A
Air/water chillers with axial fans
1
INDICE
1 CONSERVATION OF THE MANUAL .......................................................................................................................................... 3
1.1 G
RAPHIC SYMBOLS USED IN THE MANUAL
........................................................................................................................................ 3
2 PERMITTED USES ................................................................................................................................................................... 3
3 GENERAL SAFETY GUIDELINES ................................................................................................................................................ 3
3.1 P
ERSONAL PROTECTION EQUIPMENT
............................................................................................................................................... 3
3.2 H
EALTH AND SAFETY OF WORKERS
.................................................................................................................................................. 3
4 PURPOSES AND CONTENTS OF THE MANUAL ......................................................................................................................... 4
5 USER – ONBOARD CONTROLLER INTERFACE .......................................................................................................................... 5
5.1 LED ......................................................................................................................................................................................... 5
5.2 M
ENU
’
S STRUCTURE DIAGRAM
...................................................................................................................................................... 6
5.3 M
ENU
...................................................................................................................................................................................... 6
5.3.1 Setpoint menu ................................................................................................................................................................ 6
5.3.2 Password menu .............................................................................................................................................................. 6
5.3.3 Sensors menu ................................................................................................................................................................. 6
5.3.4 Alarms menu .................................................................................................................................................................. 7
5.3.5 Digital inputs menu ........................................................................................................................................................ 7
5.3.6 Parameters menu ........................................................................................................................................................... 7
5.3.7 Operation’s hours menu ................................................................................................................................................. 7
5.3.8 USB menu ....................................................................................................................................................................... 7
5.4 U
SER ADJUSTABLE SET
-
POINTS
....................................................................................................................................................... 8
6 MANAGEMENT OF COMPRESSORS ........................................................................................................................................ 8
6.1 C
OOLING MODE
.......................................................................................................................................................................... 8
6.2 H
EATING MODE
.......................................................................................................................................................................... 8
6.3 D
OMESTIC HOT WATER MODE
....................................................................................................................................................... 9
6.4 S
AFE TIME PERIODS
..................................................................................................................................................................... 9
6.5 D
EACTIVATION OF COMPRESSORS FOR OUTDOOR TEMPERATURE
.......................................................................................................... 9
7 DYNAMIC SET-POINT CONTROL ............................................................................................................................................. 9
7.1 S
ET
-
POINT ADJUSTMENT FROM
0-10
V INPUT
................................................................................................................................... 9
7.2 C
ALCULATION OF THE CORRECTION WITH
0-10V
INPUT
.................................................................................................................... 10
7.3 C
ALCULATION OF THE CORRECTION WITH RATIOMETRIC INPUT
........................................................................................................... 10
7.3.1 Settings for standard climatic curves ........................................................................................................................... 10
8 CIRCOLATOR MANAGEMENT ............................................................................................................................................... 11
8.1 A
IR PURGING OF THE SYSTEM
...................................................................................................................................................... 11
8.2 O
PERATION BY MEAN OF THE THERMOREGULATOR
(D
EFAULT
) ........................................................................................................... 11
8.3 O
PERATION UNDER THERMOREGULATOR CALL WITH PERIODIC ACTIVATION
........................................................................................... 12
8.4 H
YDRAULIC PUMP IN ANTI
-
FREEZING OPERATION
............................................................................................................................. 12
8.5 C
ONTINUOUS OPERATION
........................................................................................................................................................... 12
8.6 L
INEAR REGULATION OF THE CIRCULATOR
–
DOUBLE
ΔT
W
ATER
– ........................................................................................................... 12
8.7 M
ANAGEMENT OF DOUBLE CIRCULATOR
........................................................................................................................................ 13
9 FAN MOTOR CONTROL ......................................................................................................................................................... 13
9.1 AC
FAN MOTOR
........................................................................................................................................................................ 13
9.2 S
TAR
-D
ELTA
(Y- ∆)
FAN MOTOR
................................................................................................................................................... 13
9.3 EC
FAN MOTOR CONTROL
........................................................................................................................................................... 13
10 DEFROSTING CYCLE MANAGEMENT ................................................................................................................................. 14
10.1 F
ORCED MANUAL DEFROST
......................................................................................................................................................... 14
11 ANTIFREEZE PROTECTION ELECTRIC HEATERS (IF THE KA ACCESSORY IS PRESENT) .......................................................... 14
12 REMOTE ON/OFF CONTROL.............................................................................................................................................. 15
13 SIGNALIZATIONS FOR HWA1-A MODELS .......................................................................................................................... 15
13.1 M
ACHINE LOCKOUT SIGNALIZATION
.............................................................................................................................................. 15
14 OTHER CONTROL FUNCTIONS WITH THE PLANT MANAGEMENT GI-MODULE (OPTIONAL) ............................................... 15