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Connect 2
CIAT Connect 2 User Manual
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7
3.4 Control and displ
ay console
The local console
and the
remote contro
l console ha
v
e the sa
me front.
Mounting dimens
i
ons (in
mm
) of remote c
ontrol console
Thickness: 55
mm
LCD
Setpoint
1/
Setpoint 2 button
Heating/
Cooling selection
button
Power LED
Reset
Confirm
button
Cancel
button
On/Off
button
Circuit fault
LED
General fault LED
8
10
Table of Contents
11 MANAGEMENT of the WATER PUMPS 11.1 Pump
3
Table of Contents
3
Additional Board
3
Additional Board
4
Discharge Temperature Fault, Circuit 1 or
4
HP Pressure Fault, Circuits 1 and
4
Refrigerant Frost Limit Fault on Circuits 1 and
4
Self-Adjusting Function: Discharge Protection, Circuit 1 or
4
Water Frost Limit Fault on Circuits 1 and
4
1 Important Recommendations
5
2 General
5
3 Composition
6
Main Control Board for Machines with One Refrigerating Circuit
6
Additional Board 1
7
Additional Board 2
8
Control and Display Console
9
Connection Via RS485 Serial Port for BMS or Control Console and Multiconnect with 500 Kw Module
10
4 Description
11
Expansion (Additional) Boards 1 and
11
Main Board
11
Relay Boards
11
5 Access Levels
12
Accessing the Various Access Levels
12
Man-Machine Communication
12
Selecting an Authorised Access Level
12
Classification of the Menus and Their Functions
14
Configuring Access Levels on the Controller
14
6 List of Parameters Per Access Level
14
Management of the Numeric Codes for Accessing Levels 2 and
14
7 Management of Aero-Connect Parameters
22
8 Contents of the Menus
23
MAIN Menu
23
SETPOINTS Menu
23
MACHINE STATUS Menu
24
MACHINE PARAMETERS Menu
28
MEASURED VALUES Menu
28
ADJUSTMENT PARAMETERS Menu
33
OPERATION PARAMETERS Menu
41
FAULT MEMORY Menu
52
TEST MODE Menu
53
Automatic Machine Operation Control
54
Load Shedding Control
54
9 Management of the On/Off Inputs
54
Water Flow Switch
54
Expansion Valve Fault
55
Fan Fault (Circuits 1 and 2)
55
Phase Controller Fault
56
Pump Fault
56
Compressor Protection
57
Manual HP Pressure Switch Fault on Circuit 1 or
57
Setpoint Selection Via On/Off Input
58
Variable Setpoint Via 4-20 Ma Input
58
10 Management of the Analogue Inputs
59
Operating Mode Selection
59
Temperature Sensor
59
Pressure Sensor
62
Frost Protection of Pumps and Heat Exchangers While Unit Is off
63
Pump
63
Pump Management if P2 = 3 (Reversible Air-To-Water) + Heating Mode + P111 = Boiler
63
Unseizing and Switching the Pumps
63
12 Winter Protection
63
Management of the Compressor Protections
64
13 Management of the Functions
64
Water Loop Winter Protection
64
Management of Compressor Start-Up
65
Management of the Time Counters
65
Management of Configurable Output P111
66
Management of the Reversing Valves
66
Self-Adjusting Function: Refrigerant Frost Limit
66
Self-Adjusting Function: Water Frost Limit
66
14 Self-Adjusting Functions
66
15 Fault Functions
67
Self-Adjusting Function for High Water Return Temperatures
67
Self-Adjusting Function: HP Pressure Limit
67
Self-Adjusting Function: Minimum HP, Circuit 1 or
67
Refrigerant Frost Limit Fault on Circuits 1 and 2
68
Discharge Temperature Fault, Circuit 1 or 2
69
LP Fault on Circuit 1 or
69
Management of Superheat Faults
70
16 Controls
71
Main Control in Cooling and Heating Modes (Operating Mode Based on P119)
71
Nverter
72
Water Temperature Setpoint Adjustment
72
Adjustment of Setpoint for the Water Supply and Return Temperatures (P141 = 1 or 2) if P7
75
Control Setpoint (P251) Management
76
Storage Control NVERTER
76
Automated Self-Regulating Control
77
Control During Normal Operation or On/Off Control
77
17 Control of Condensing Pressure for Air-Cooled Units
77
Éroconnect Free Cooling
77
Forced and Self-Adjusting Control for A, B and C
78
Fan Speed Control
79
Low Noise Control (Single-Fan Units Only - Aquaciat2)
82
Total Recovery Control
82
Management of the Air Blades if P10 = Centrifugal
83
18 Control of Condensing Pressure for Water-To-Water Units
84
19 Restriction of Operation of the Machines Based on the Outdoor Temperature
84
Restriction to the Maximum Air Temperature in Cooling Mode
84
Restriction to the Minimum Air Temperature in Heating Mode
84
Restriction to the Maximum Air Temperature in Heating Mode
85
Restriction to the Minimum Air Temperature in Cooling Mode
85
Management of the Auxiliary Heater Board and the Electric Auxiliary
86
20 Management of the Auxiliary Heater Board and the Electric Auxiliary Heaters
86
Case of Two Parallel-Connected Machines
87
21 Management of the Back-Up Boiler
87
22 Master/Slave Control
87
23 Actuation of the Electronic Expansion Valve
91
With Alco Driver and Display
91
With CIAT Driver
91
24 Important Information Regarding the Control of an Inverter Compressor
93
25 Defrosting of the Evaporator Coils
94
26 Hourly Programming
94
Presentation
94
Definition of Holiday Zones
95
Definition of the Programming Stages
95
Operation
95
27 Communication Protocol
97
Registers Accessible by Customer
97
Customer Access Bit
98
4
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CIAT Connect 2 Specifications
General
Brand
CIAT
Model
Connect 2
Category
Control Unit
Language
English
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