CIAT Connect 2 User Manual

2
CONTENTS
PAGE
13 MANAGEMENT OF THE FUNCTIONS
62
13.1 Management of the compressor protections
62
13.2 Management of the time counters
63
13.3 Management of compressor start-up
63
13.4 Management of the reversing valves
64
13.5 Management of configurable output P111:
64
14 SELF-ADJUSTING FUNCTIONS
64
14.1 Self-adjusting function: water frost limit
64
14.2 Self-adjusting function: refrigerant frost limit
64
14.3 Self-adjusting function: HP pressure limit
65
14.4 Self-adjusting function: discharge protection, circuit 1 or 2
65
14.5 Self-adjusting function: minimum HP, circuit 1 or 2
65
14.6 Self-adjusting function for high water return temperatures
65
15 FAULT FUNCTIONS
65
15.1 Water frost limit fault on circuits 1 and 2
65
15.2 Refrigerant frost limit fault on circuits 1 and 2
66
15.3 HP pressure fault, circuits 1 and 2
66
15.4 Discharge temperature fault, circuit 1 or 2
67
15.5 LP fault on circuit 1 or 2
67
15.6 Management of superheat faults
68
16 CONTROLS
69
16.1 Main control in cooling and heating modes (Operating mode based on P119)
69
16.2 Water temperature setpoint adjustment
70
16.3 Adjustment of water temperature setpoint if P7 ≠ INVERTER
70
16.4 Adjustment of setpoint for the water supply and return temperatures (P141 = 1 or 2) if P7 =
INVERTER
73
16.5 Storage control
74
16.6 Control setpoint (P251) management
74
16.7 Automated self-regulating control
75
16.8 Control with AÉROCONNECT link in FREE COOLING mode
75
17 CONTROL OF CONDENSING PRESSURE FOR AIR-COOLED UNITS
75
17.1 Control during normal operation or on/off control
75
17.2 Forced and self-adjusting control for A, B and C
76
17.3 Fan speed control
77
17.4 Low Noise control (single-fan units only – Aquaciat2)
80
17.5 Total recovery control
80
17.6 Management of the air blades if P10 = Centrifugal
81
18 CONTROL OF CONDENSING PRESSURE FOR WATER-TO-WATER UNITS
82
19 RESTRICTION OF OPERATION OF THE MACHINES BASED ON THE OUTDOOR
TEMPERATURE
82
19.1 Restriction to the minimum air temperature in heating mode
82
19.2 Restriction to the maximum air temperature in cooling mode
82
19.3 Restriction to the maximum air temperature in heating mode
83
19.4 Restriction to the minimum air temperature in cooling mode
83
20 MANAGEMENT OF THE AUXILIARY HEATER BOARD AND THE ELECTRIC AUXILIARY
HEATERS
84
21 MANAGEMENT OF THE BACK-UP BOILER
85
22 MASTER/SLAVE CONTROL
85
22.1 Case of two parallel-connected machines
85
23 ACTUATION OF THE ELECTRONIC EXPANSION VALVE
89
23.1 With Alco driver and display
89
23.2 With CIAT driver
89
24 IMPORTANT INFORMATION REGARDING THE CONTROL OF AN INVERTER COMPRESSOR
91
25 DEFROSTING OF THE EVAPORATOR COILS
92
26 HOURLY PROGRAMMING
92
26.1 Presentation
92
26.2 Definition of the programming stages
93
26.3 Definition of holiday zones
93
26.4 Operation
93
27 COMMUNICATION PROTOCOL
95
27.1 Registers accessible by customer
95
27.2 Customer access bit
96

CIAT Connect 2 Specifications

General

Brand	CIAT
Model	Connect 2
Category	Control Unit
Language	English