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INSTALLATION MANUAL - USER AND MAINTENANCE
Precision air-conditioners
ACCURATE 2.0
Chilled Water
AC Chilled Water
AB Dual Coil
Chilled Water
PRELIMINARY
50/60Hz range
EN
AC: frame 1: 0061-0101-0131
frame 2: 0161-0201-0261
frame 3: 0331-0401-0501
frame 4: 0601-0701
frame 5: 0901-1151
frame 7: 1201-1401-1551-1801
frame 8: 2001-2251
AB: frame 3: 0302-0352
frame 4: 0452-0552
frame 5: 0702-0852
frame 7: 0902-1052-1252
frame 8: 1302-1502
INDEX
Documents
3
Water connections and water characteristics
22
Unit configuration
3
Correction factors
22
General characteristics
4
Condensate drain
26
Air flows
5
Electrical connections
26
Rating plate
6
Minimum cross-sections of the power supply cables
26
General technical data
6
Electrical specifications
27
Hot water re-heating
8
Operation and control
31
Accessing the main components
8
Instruments and alarms
31
Transport and handling
9
Calibrating the control and safety devices
31
General dimensions and weights
10
Calibrating the air flow sensor
32
Positioning the air-conditioner
15
Calibrating the dirty filter sensor
32
Operating space
15
Temperature and humidity probe
32
Operating limits
16
Servomotor and hot water valve
33
Optional base moulding (over units)
16
Electric heaters
37
Air distribution, under units (under units)
16
Humidifier
38
Intake plenum, under units (under units)
17
Humidifier power supply
39
Outlet plenum, over units (over units)
17
Humidifier and condensate drain
40
Motor-driven damper, over/under units (over/under units)
17
Condensate drain pump and humidifier drain pumpe
40
Front outlet plenume (over units)
18
Std condensate drain pump (low water temperature)
41
Front outlet mouldin (under units)
18
Condensate drain pump for high water temp.
Soundproof suction or outlet plenum
18
(humidifier)
42
Direct free cooling plenum (under units)
19
Double power supply with automatic switching
43
Direct free cooling base (over units)
20
Maintenance
44
Direct free cooling connection kit (under/over units)
20
Dismantling
45
Optinal air filter
21
Troubleshooting
45
Optional Fresh air
21
Liability disclaimer
This bulletin refers to standard executions, in particular for dimension, weight, electric, hydraulic, aeraulic and refrigerant connections
(whereas applicable). Contact Climaveneta Commercial Office for further drawings and schemes.
Climaveneta declines any liability derived from the bulletin’s use.
This bulletin is of exclusive property of Climaveneta, and all forms of copy are prohibited.
The data contained herein are subject to variation without notice.
In some parts of this manual, the following symbols are used:
WARNING = for actions that require special care and
suitable preparation
Specialist personnel (electrician)
Person with in-depth knowledge and experience such as to
be able to recognise risks and avoid dangers that may derive
from electricity (IEV 826-09-01).
PROHIBITED = for actions that absolutely MUST NOT
be performed
2
EN
ACCURATE 2.0 AC - AB
DOCUMENTS
DOCUMENTS ENCLOSED WITH THE UNIT
Each unit is delivered complete with the following documents:
• Air-conditioner installation - user and maintenance manual;
• Instruction manual for the microprocessor controller;
• Wiring diagram;
• List of spare parts;
• CE declaration with list of European directives and standards
that the unit is compliant with;
• Warranty conditions.
Description
A C O 0 7 0 1
Option 1
MODELS
Option 2
AIR FLOW
Option 3
CAPACITY
Option 4
WATER CIRCUITS
Option 5
VERSION
ACCURATE 2.0 AC - AB
Version
Water circuits
Capacity
Air flow
Models
Options
UNIT CONFIGURATION
BASIC
AC
AB
O
U
--1
2
BASIC
Chilled Water
Dual Coil - Chilled Water
Over Flow
Under Flow
Rated cooling capacity expressed in kW
AC units
AB units
BASIC version
EN
3
GENERAL CHARACTERISTICS
DESCRIPTION OF THE UNIT
Ductable precision air-conditioners with capacities from 6 to 225
kW for vertical installation, possibility of electric or hot water
reheating, and humidifier and dehumidifier option for precise control of the temperature-humidity conditions. Ideal for air-conditioning technological environments, server rooms and data processing centres, and technological applications in general.The
packaged precision air-conditioners operate with chilled water
and/or water-glycol and are suitable for indoor installation.The
units conform to the essential requirements established in EC
directive 2006/42. They are factory tested and on-site installation
is limited to the refrigerant and electrical connections.
HEATING WITH HOT WATER COIL
The coil, complete with water circuit air vent valve, is located
downstream of the evaporator coil.
The option is supplied complete with modulating 3-way valve with
servomotor, managed by the EVOLUTION+ controller.
Finned coil heat exchanger made from copper tubes expanded
mechanically onto aluminium fins with high heat exchange area.
The hot water coil can either be an alternative to or in combination with the electric heaters, and is used to:
- Heat the air so as to reach the set point.
- Reheat the air during dehumidification operation, bringing the
air temperature back to the set point.
STRUCTURE
Base made from painted galvanised steel plat RAL 7016; frame
complete with service panels that allow the unit to operate correctly during maintenance operations.
The cosmetic panelling, coated with an innovative double layer of
plastic, is lined on the inside with special soundproofing material.
IMMERSED ELECTRODE HUMIDIFIER
Modulating steam production and automatic control of the salt
concentration in the boiler to allow the use of untreated water.
FANS
EC RADIAL FAN, STANDARD VERSION
Fan with one-sided intake and backward curved blades, brushless
motor with electronic commutation for excellent performance in
terms of static pressure, low power consumption and reduced
noise. Speed control is modulating, set from the user terminal based
on the correct required static pressure setting. In the STANDARD
version with low residual pressure (20- 100 Pa) at rated flow.
EC RADIAL FAN, HP VERSION
Fan with one-sided intake and backward curved blades, brushless
motor with electronic commutation for excellent performance in
terms of static pressure, low power consumption and reduced
noise. Speed control is modulating, set from the user terminal
based on the correct required static pressure setting.
In the HP version with high residual pressure at rated flow.
FILTER
Pleated filters, supported by a frame, with protective metal mesh,
and regenerable polyester fibre filtering media treated with synthetic resins. G2/G4 efficiency according to the CEN-EN 779
standard with average separation efficiency 90.1% ASHRAE (G4).
The filter is flame retardant.
AIR HEAT EXCHANGER
Finned coil, large front surface, made from copper tubes expanded mechanically onto aluminium fins with a high heat exchange
surface. Hydrophilic treatment to assist the drainage of condensate. The coil, installed upstream of the fans for perfect air distribution, is fitted with a stainless steel pan with hose to drain the
condensate.
MICROPROCESSOR CONTROL SYSTEM
For the control of the ambient parameters and the management
of the unit monitoring and control functions (compliant with EEC
directive 89/336).
CHILLED WATER MODELS - modulating 3-way control valve
standard (0-10 V optional), with servomotor controlled by the
microprocessor.
CONFIGURATION
O- OVER: air delivery versus top
U- UNDER: air delivery versus bottom
CHILLED WATER UNIT - AC VERSION
The unit is fitted with a modulating 3-way valve complete with
standard three point servomotor (or optional 0-10 V; 2-way also
available). The valve opening and/or closing signal is automatically
managed by the EVOLUTION+ electronic controller so as to
ensure the desired ambient conditions.
The ambient air is cooled by passing through the air-conditioner
cooling coil.
The EVOLUTION+ controller manages the main ambient parameters and is used to set the values, such as:
- set points
- proportional band
- characteristics of the valves
- etc.
AC
ELECTRICAL PANEL
Built and wired in compliance with the IEC 204-1/EN60204-1
standards, complete with contactor and overload protection for
the compressors and fans, disconnecting switch with door interlock safety device.
AIR FLOW SENSOR
Activates an alarm in the event of insufficient air flow.
ELECTRIC POST-HEATING
Finned aluminium heaters complete with safety thermostat to cut
off power and activate an alarm in the event of overheating.
The electric heaters are used to:
- Heat the air so as to reach the set point
- Reheat the air during dehumidification operation, bringing the
air temperature back to the set point
4
EN
ACCURATE 2.0 AC - AB
DUAL COIL CHILLED WATER - AB VERSION
These units are per standard provided with a double chilled water
circuits inside, who never work simultaneously. Each chilled water
circuit is provide with 3 way valve with 3 point motor as standard
(or optional 0-10 V; 2-way also available). The valve opening and/or
closing signal is automatically managed by the EVOLUTION+
electronic controller so as to ensure the desired ambient conditions. The ambient air is cooled by passing through the air-conditioner cooling coil.
The EVOLUTION+ controller manages the main ambient parameters and is used to set the values, such as:
- set points
- proportional band
- characteristics of the valves, etcc
AB
AIR FLOWS
The ACCURATE 2.0 air-conditioners are available in different
configurations, based on the air intake and outlet positions; the
main distinction is between OVER and UNDER units. The versions defined as OVER with air outlet from the top generally
have the air taken in from the front or rear or from the bottom of
the unit, as required by the custome. The air is discharged from the
top of the unit, in ducts, false-ceilings, or from outlet plenums at
the front.
ACO - ABO
fig. 1
1 OVER units with intake from the front and outlet plenum
fig. 3
3 OVER units with intake from under the floor and outlet from the top
The versions defined as UNDER with air outlet from under the
floor have the air intake through the top of the unit directly from
fig. 2
2 OVER units with intake from the front and outlet from the top
fig. 4
4 OVER units with intake from Athe rear and outlet from the top
the environment, or via ducts and/or intake plenums.
ACU - ABU
fig. 5
fig. 6
5 UNDER units with intake from the top and front outlet plenum.
ACCURATE 2.0 AC - AB
6 UNDER units with intake from the top and outlet under the floor
EN
5
RATING PLATE
The air-conditioner rating plate is positioned on a panel inside the
unit, and provides the following information:
- Model and serial number of the unit;
- Power supply (voltage, phases and frequency);
- Power input of the unit and the individual components;
- Current input of the unit and the individual components: FL.I
(Full load input), FLA (Full load current) and LRA (Locked
rotor current);
Mod.151 rev.03
Type
Modello
Model
Modèle
Modelo
Typ
Item
Articolo
Einzelteil
Article
Artículo
Produktkodning
Serial number
Matricola unità
Seriennummer
Matricule unité
Matricula unidad
Serienummer
Manufact. year
Anno di costruz.
Baujahr
Année construction
Año de costrucción
Tillverkningsår
Operating weight
Peso in funzionam.
Betriebsgewicht
Poids en fonction.
Peso en funcionam
Driftsvikt
Refrigerant
Gas refrigerante
Kältemittel
Gaz réfrigérant
Gas refrigerante
Köldmedium
Refr. charge
Carica refrigerante
Füllgewicht
Q.té gaz réfrig.
Carga refrigerante
Köldmediefyllning
ELECTRICAL SUPPLY
Auxiliary
Main
F.L.I.
F.L.A.
L.R.A.
kW
A
A
MAXIMUM ALLOWABLE PRESSURE (PS)
Gas circuit: HP=
Water circuit:
MPa
LP=
MPa
MPa
Maximum transport and storage temperature:
°C
Manual n°:
Wiring Diagrams:
rev.
36061 BASSANO DEL GRAPPA (VI)
ITALIA - via SARSON, 57/C
Tel.+39 0424 509500 Fax+39 0424 509509
e-mail: [email protected]
TECHNICAL DATA
ACCURATE 2.0- AC Chilled water
Model
Frames
Air flow-rate
CAPACITY DELIVERED
Gross total capacity (1)
Gross sensible capacity (1)
SHR (1)
Water flow-rate (1)
Total unit pressure drop (1)
KVS standard valve
Water connections (*)
Water content
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
VENTILATION
No. of fans
Sound power
Sound pressure (5)
Standard air filter
HUMIDIFIER
Capacity
STANDARD ELECTRIC HEATERS
Steps
Power consumption
DIMENSIONS
Width
Depth
Height OVER unit
Height UNDER unit
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
FRAME 1
FRAME 2
FRAME 3
FRAME 4 FRAME 5
FRAME 7
FRAME 8
m3/h 1800 2500 2500 5000 5000 5000 10000 10000 10000 12500 12500 21000 21000 25000 25000 30000 30000 36000 36000
kW
kW
6,0 10,7 13,3
5,1
8,6 10,2
0,84 0,80 0,77
l/h 1038 1846 2283
kPa
57
75
65
2,5
4,0
4,0
IN
1/2" F
OUT
1/2" F
l
2,988 4,648 7,318
15,7
13,5
0,86
2706
67
6,3
20,6
16,6
0,81
3549
70
6,3
1" F
3/4" F
5,87 8,27
26,6
20,4
0,77
4580
98
6,3
13,06
kW
kW
0,13
0,10
0,31
0,26
0,31
0,27
0,61
0,53
0,63
0,55
0,65
0,58
kW
kW
0,13
0,10
0,31
0,26
0,31
0,27
0,61
0,53
0,63
0,55
0,65
0,58
kW
kW
0,13
0,10
0,31
0,26
0,31
0,27
0,61
0,53
0,63
0,55
0,65
0,58
kW
kW
0,13
0,10
0,31
0,26
0,31
0,27
0,61
0,53
0,63
0,55
0,65
0,58
kW
0,13
0,31
0,31
0,61
0,63
0,65
dB(A)
dB(A)
1
67
47
1
70
50
G2
1
70
50
2
74
54
2
74
54
G2
2
74
54
32,8
29,6
0,90
5636
47
16
40,3 50,2 60,1 69,9 89,1 112,4 118,6 138,7 155,0 178,0 197,0 225,0
34,8 41,4 48,3 54,8 74,3 89,8 95,5 109,0 127,0 136,0 156,0 168,0
0,86 0,82 0,80 0,78 0,83 0,80 0,81 0,79 0,82 0,76 0,79 0,75
6933 8632 10339 12020 15315 19328 20390 23851 26667 30678 33949 38684
57
96
81
64
62 116 78 69
94 114 159 149
16
16
25
25
25
25
40
40
40
40
40
40
1 1/2" F
2" F
2" F
2" F
2" F
2" F
1 1/4" F
1 1/2" F
1 1/2" F
2" F
2" F
2" F
12,27 15,22 21,02 25,95 35,95 37,68 51,88 45,98 64,18 63,2 82,4 77,3 101,1
230/1/50
400/3N/50
1,53 1,63 1,73 1,89 1,96 3,51 3,69 3,82 3,97 5,01 5,54 6,97 7,51
1,70 1,82 1,92 2,04 2,11 3,89 4,08 4,11 4,25 5,57 6,14 7,48 8,06
460/3/60
1,53 1,63 1,73 1,89 1,96 3,51 3,69 3,82 3,97 5,01 5,54 6,97 7,51
1,70 1,82 1,92 2,04 2,11 3,89 4,08 4,11 4,25 5,57 6,14 7,48 8,06
380/3/60
1,53 1,63 1,73 1,89 1,96 3,51 3,69 3,82 3,97 5,01 5,54 6,97 7,51
1,70 1,82 1,92 2,04 2,11 3,89 4,08 4,11 4,25 5,57 6,14 7,48 8,06
230/3/60
1,73 1,84 1,95 1,91 1,99 3,92 4,12 3,88 4,05 5,66 6,24 7,31 7,96
1
80
60
1
80
60
G4
1
80
60
1
82
61
1
82
61
2
86
65
G4
2
86
65
2
88
67
2
88
67
G4
3
90
69
3
90
69
3
91
70
G4
3
91
70
G4
kg/h
3
3
3
5
5
5
5
5
5
5
5
8
8
8
8
10
10
15
15
kW
3
4
3
4
3
4
3
8
3
8
3
8
3
9
3
9
3
9
3
15
3
15
3
18
3
18
3
18
3
18
3
24
3
24
3
24
3
24
mm
mm
mm
mm
600
1000
1550
500
2100
890
2650
1980
1980
3200
/
2180
1 - Inside air 24°C/50% - water 7-12°C - ESP 20 Pa
5 - Average sound pressure level, at a distance of 2 m, for units in a free field on a reflecting surface.
The average sound pressure level is calculated based on the sound power level measured in accordance with ISO 3744.
* PAY ATTENTIONS: PIPELINE DIMENSIONS MUST BE CALCULATED FROM INSTALLED LOCALLY, FOLLOWING THE
INSTRUCTION ON WATER CONNECTIONS PARAGRAPHS
6
EN
ACCURATE 2.0 AC - AB
ACCURATE 2.0 - AB Chilled water
Model
Frames
Air flow-rate
CAPACITY DELIVERED
Gross total capacity (1)
Gross sensible capacity (1)
SHR (1)
Water flow-rate (1)
Total unit pressure drop (1)
KVS standard valve
Water connections (*)
Water content
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
Power consumption with HP EC radial fans
Power supply V/Ph/Hz
Power consumption with BASIC EC radial fans
VENTILATION
No. of fans
Sound power
Sound pressure (5)
Standard air filter
HUMIDIFIER
Capacity
STANDARD ELECTRIC HEATERS
Steps
Power consumption
DIMENSIONS
Width
Depth
Height OVER unit
Height UNDER unit
m3/h
kW
kW
0302
0352
FRAME 3
10000
10000
0452
0552
FRAME 4
12500
12500
0702
0852
FRAME 5
21000
21000
IN
OUT
l
31,1
27,3
0,88
5341
76
10
1 1/4" F
1” F
8,24
36,3
30,7
0,85
6240
70
10
1 1/4" F
1” F
11,17
45,5
38,3
0,84
7828
95
16
1 1/2" F
1 1/4" F
13,49
52,7
42,7
0,81
9053
73
16
1 1/2" F
1 1/4" F
18,42
71,2
61,1
0,86
12238
120
16
1 1/2" F
1 1/4" F
19,95
kW
kW
-
-
-
-
-
kW
kW
1,63
1,82
1,73
1,92
1,89
2,04
1,96
2,11
3,51
3,89
kW
kW
1,63
1,82
1,73
1,92
1,89
2,04
1,96
2,11
3,51
3,89
kW
kW
1,63
1,82
1,73
1,92
1,89
2,04
1,96
2,11
3,51
3,89
kW
1,84
1,95
1,91
1,99
3,92
dB(A)
dB(A)
1
80
60
1
80
60
1
82
61
1
82
61
2
86
65
l/h
kPa
G4
G4
0902
25000
1052
FRAME 7
25000
30000
103,1
84,1
0,82
17736
124
25
2" F
1 1/2" F
32,25
124,7
111,8
0,90
21449
82
40
2" F
2" F
41,2
131,3
128,2
0,98
22584
55
40
38,6
50,5
-
-
-
-
3,97
4,25
5,54
6,14
6,97
7,48
7,51
8,06
3,97
4,25
5,54
6,14
6,97
7,48
7,51
8,06
3,97
4,25
5,54
6,14
6,97
7,48
7,51
8,06
4,05
6,24
7,31
7,96
2
88
67
G4
3
90
69
3
91
70
3
91
70
82,3
89,6
68,0
75,9
0,83
0,85
14153
15405
118
155
16
25
1 1/2" F
2" F
1 1/4" F 1 1/2" F
26,95
23,45
230/1/50
400/3N/50
3,69
3,82
4,08
4,11
460/3/60
3,69
3,82
4,08
4,11
380/3/60
3,69
3,82
4,08
4,11
230/3/60
4,12
3,88
2
86
65
2
88
67
G4
1252
1302
1502
FRAME 8
36000
36000
148,2
136,6
0,92
25491
56
40
2" F
2" F
G4
kg/h
5
5
5
5
8
8
8
8
10
15
15
kW
3
9
3
9
3
15
3
15
3
18
3
18
3
18
3
18
3
24
3
24
3
24
mm
mm
mm
mm
1000
1550
2100
2650
3200
890
1980
/
2180
1 - Inside air 24°C/50% - water 7-12°C - ESP 20 Pa
5 - Average sound pressure level, at a distance of 2 m, for units in a free field on a reflecting surface.
The average sound pressure level is calculated based on the sound power level measured in accordance with ISO 3744.
* PAY ATTENTIONS: PIPELINE DIMENSIONS MUST BE CALCULATED FROM INSTALLED LOCALLY, FOLLOWING THE
INSTRUCTION ON WATER CONNECTIONS PARAGRAPHS
ACCURATE 2.0 AC - AB
EN
7
HOT WATER RE-HEATING
Post reheating system by mean hot water, composed by finned coil with copper tubes, 3 way valve and actuator driven with the logic implemented in EVOLUTION+ controller
ACCESSING THE MAIN COMPONENTS
The air-conditioner is accessible from all sides by removing the
various panels.
The front and/or side panels are opened in 2 different ways:
FRONT PANELS
All the front panels are hinged and fitted with locking latches.
All the front panels are opened and closed using a tool (typically a
screwdriver) to open and close the latches.
Once the latches have been opened, the front panels can be
swung open and then removed vertically to simplify the service
operations on the air-conditioner, especially where there is little
space available.
Opening the front panels provides access to all the components
in the air-conditioner involved in routine maintenance.
The number of front panels depends on the capacity of the airconditioner.
SIDE PANELS
All the side panels are accessible and removable.
Nonetheless, these do not need to be removed for routine maintenance operations. This means that, if necessary, a series of units
can be installed next to each other.
The side panels are fastened by screws.
These are accessible directly on the side panel by removing the
black plastic caps.
electrical panel
BACK PANELS
Fastened by normal self-tapping screws, these are not accessible
as when installed the back of the unit is against the wall.
INSIDE PANELS
The compartment that contains the fans and the heaters is protected and insulated by a metal plate.
This is for safety reasons, so as to not have to shut the unit down
during normal maintenance operations
D
WARNING: before restarting the air-conditioner, always
check that all the panels have been correctly replaced
8
EN
ACCURATE 2.0 AC - AB
TRANSPORT AND HANDLING
Move the air-conditioner, which must not be reclined or tipped
over, nor exposed to the elements, as near as possible to the site
of installation before removing the packaging and the pallet.
- using fabric slings underneath the unit, making sure that when
the slings are in tension these do not apply pressure on the top
edges.
The units can be lifted:
- using a forklift, sliding the forks through the openings in the pallet;
The air-conditioner must be stored indoors, preferably in its own
packaging, and protected against excessive humidity (<85% RH)
and temperature (< 50°C).
AC
AB
STANDARD PACKAGING
L
P
H - OVER
H - UNDER
L
mm
mm
mm
mm
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
660
1060
1610
2160
2710
3260
560
950
2250
/
2250
2450
mm
mm
mm
mm
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
690
1090
1640
2190
2740
3290
590
980
2265
/
2265
2380
H
P
PACKAGING WITH WOODEN CRATE
(OPTIONAL)
AC
AB
L
P
H - OVER
H - UNDER
H
P
L
The symbols shown on the packaging are compliant with the ISO 7000 standard; the meaning of the symbols is shown in the table.
FRAGILE: handle with care.
THIS SIDE UP: indicates the correct position
of the packaged unit.
KEEP DRY: indicates that the packaged unit
must be kept in a dry place.
TEMPERATURE LIMITS: indicates the
temperature limits for storing and handling the
packaged unit.
CENTRE OF GRAVITY: indicates the
centre of gravity of the packaged unit.
USE NO HOOKS: indicates that hooks cannot
be used to handle or lift the packaged unit.
KEEP AWAY FROM HEAT: indicates
that the packaged unit must be kept
away from sources of heat.
DO NOT STACK the packages.
RECEIVING THE UNIT
Check, upon delivery, that the air-conditioner is intact and in perfect condition; immediately notify the carrier in writing of any
damage that may be due to transport.
ACCURATE 2.0 AC - AB
In particular, check that the panel where the user terminal is fitted has not been damaged.
If the side panels have been damaged during transport, they must
be replaced before installing the unit.
EN
9
GENERAL DIMENSIONS AND WEIGHTS
OVER MODELS Frame 2
1980
1980
OVER MODELS Frame 1
15
15
1000
600
500
500
OVER MODELS Frame 4
1980
1980
OVER MODELS Frame 3
10
980
1000
10
EN
10
10
870
890
10
10
1530
1550
10
10
870
10
890
ACCURATE 2.0 AC - AB
GENERAL DIMENSIONS AND WEIGHTS
1980
OVER MODELS Frame 5
10
2080
10
10
870
2100
10
890
1980
OVER MODELS Frame 7
10
2630
2650
ACCURATE 2.0 AC - AB
10
10
870
10
890
EN
11
GENERAL DIMENSIONS AND WEIGHTS
UNDER MODELS Frame 2
1980
1980
UNDER MODELS Frame 1
1000
600
485
485
15
15
500
500
2180
1980
1980
2180
200
UNDER MODELS Frame 4
200
UNDER MODELS Frame 3
10
980
10
10
870
890
12
EN
10
10
1530
10
10
870
10
890
ACCURATE 2.0 AC - AB
GENERAL DIMENSIONS AND WEIGHTS
1980
2180
200
UNDER MODELS Frame 5
10
2080
10
10
870
10
890
2180
1980
200
UNDER MODELS Frame 7
10
2630
10
10
870
10
41.5
890
51.2
797.3
2650
40
2550
40
30
60
770
60
70
2570
ACCURATE 2.0 AC - AB
EN
13
GENERAL DIMENSIONS AND WEIGHTS
1980
2180
200
UNDER MODELS Frame 8
3180
41.5
10
10
10
870
10
890
51.5
797
3200
40
3120
3100
30
60
770
60
70
40
FRAME
AC
AB
Width
Depth
Height - OVER
Height - UNDER
AC
Empty weight
Weight with standard packaging
AB
Empty weight
Weight with standard packaging
14
EN
mm
mm
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4 FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
3200
500
890
1980
/
1980
2180
kg
kg
95
100
105
110
115
120
152
160
162
170
172
180
264
275
274
285
284
295
396
410
406
420
505
525
515
535
615
640
635
650
642
667
652
677
740
766
750
776
kg
kg
/
/
/
/
/
/
/
/
/
/
/
/
/
/
419
430
434
445
596
610
611
625
750
770
765
785
895
920
910
935
/
/
915
940
944
970
954
980
ACCURATE 2.0 AC - AB
POSITIONING THE AIR-CONDITIONER
The air-conditioner can rest directly on the floor, perfectly level,
with a maximum difference in height of 5 mm between the ends
of the base: incorrect levelling may cause the condensate to leak
from the collection pan.
L1
P1
WARNING: the air-conditioner must be installed
indoors and in non-aggressive environments. Apply an
elastic gasket around the perimeter of the base to prevent
the transmission of noise and vibrations.
SUPPORT FRAME (optional accessory)
A support frame is recommended:
- to allow the air-conditioner to be installed before assembling
the raised floor;
- to totally dampen any mechanical vibrations;
- to assist the laying of pipes and cables.
The support frame is available as an accessory and is adjustable in
height, indicated in the figure by the distance X, between 200 and
600 mm.
To prevent the transmission of noise and vibrations, an elastic gasket, at least 5 mm thick, should be inserted between the panels of
the raised floor and the frame, which must also be insulated from
the metallic structure of the floor.
X = 200 ÷ 600 mm
ACCURATE 2.0
unit
Raised floor
NOTE: the frame must be fitted by the installer following the
instructions shown inside the packaging.
Elastic gasket
FRAME
AC
AB
L1
mm
P1
mm
Elastic gasket
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
980
1530
2080
2630
3180
485
870
OPERATING SPACE
Access is from the front only for all models.
This feature ensures easy access to all the main components in
the unit for installation and periodical maintenance.
Thanks to this feature, the units can be installed next to one
another, or alternatively fitted in racks.
To ensure easy maintenance, a space of at least 700 mm must be
left in front of the air-conditioner, as shown in the figure.
Make sure that the air intake and outlet are never
blocked, even partially.
E
D
L
FRAME
AC
AB
D
mm
E
mm
L
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
> 500
> 700
0
0
ACCURATE 2.0 AC - AB
EN
15
OPERATING LIMITS
All versions
The AC - AB units are designed for operation within the following operating ranges (the limits are considered for new units that have been
correctly installed and maintained):
- Air temperature must be included between 15,0°C and 50,0°C.
- Relative humidity must be included between 30% and 70%.
- Temperature difference between inlet & outlet must be included between 3,0°C and 10,0°C.
- Water inlet temperature to the coil must be included between 5,0°C and 28,0°C.
- Water outlet temperature to the coil must be included between 8,0°C and 36,0°C
- Max working pressure 16bar.
- Voltage tolerances: the power supply voltage must be between ± 10% of the rated value
OPTIONAL BASE MOULDING (OVER UNITS)
The "OVER" units are designed for the connections to pass
through the base of the unit; nonetheless, if there is no raised
floor (units with intake from the rear or front), to simplify the
connection of the pipes and cables, a base moulding must
be used.
The base moulding, available as an accessory, is epoxy-polyester
powder painted, in the same colour as the external panels on the
air-conditioner, measures 200 mm in height and is fitted with an
inspection panel.
The inside walls are lined with soundproofing material.
On the right- and left-hand sides of the base moulding are six
pre-cut sections for passing the cables and pipes;
The moulding must be fastened to the air-conditioner using the
M6 threaded inserts already arranged on the base.
A1
200
C1
air-conditioner
base
unit
moulding
FRAME
AC
AB
A1
mm
C1
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
980
1530
2080
2630
/
/
485
870
/
AIR DISTRIBUTION (UNDER UNITS)
In the units with air outlet from the bottom, the following details
must be ensured to allow for sufficient air flow-rate:
a) connection opening between the unit and the raised
floor; make a hole in the raised floor and position the air-conditioner over the centre of the hole: the air outlet opening must
not be blocked, even partially, by parts of panels, beams, pipes or
other objects; insert an elastic gasket around the perimeter of
the base to prevent the transmission of noise and vibrations;
b) free air flow along the cavity of the raised floor; ithe
duct represented by the underfloor space must be sufficiently
high (at least 200-250 mm of free space, net of the panels and
the beams of the raised floor) and free of obstructions, especially near the air-conditioner;
c) grills and air distribution openings in the room;
the air exits the underfloor space through openings or grills,
the position and surface area of which must be proportional to
the layout of the thermal load of the environment.
16
EN
For units with air outlet from the bottom, the recommended air
outlet speed from the raised floor is between 1 and 2.5 m/s; consequently, the cross-section of the grills should be sized based on
this value. The total outflow area (sum of the areas of the openings and net space of the grills) required for each model must be
calculated by dividing the total air flow-rate (in m3/s) by the
required outlet speed (in m/s).
WARNING: the air outlet must be completely free, as an
insufficient air outflow air will reduce the flow-rate, the performance of the air-conditioner and may affect reliability.
ACCURATE 2.0 AC - AB
INTAKE PLENUM, UNDER VERSIONS (UNDER UNITS)
For ducting the air intake, plenums are available to be fitted
between the top of the unit and the air return duct or the falseceiling.
L
H
P
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
3200
500
890
350
500
INTAKE PLENUM, UNDER VERSIONS (OVER UNITS)
For ducting the air intake, plenums are available to be fitted
between the top of the unit and the air return duct or the falseceiling.
L
H
P
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
/
/
500
890
/
350
500
/
MOTOR-DRIVEN DAMPER OVER/UNDER (UNIT OVER/UNDER)
The motor-driven damper, available as an optional accessory, is
located inside a plenum.
The OVER and UNDER units are delivered with the damper
already fitted, on the intake, as shown in the figure.
FRAME
AC
AB
H
mm
H
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
150
ACCURATE 2.0 AC - AB
EN
17
FRONT OUTLET PLENUM (OVER UNITS)
The figure shows the front outlet plenum (optional for Over units).
L
H
P
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
/
/
500
890
/
350
500
/
FRONT OUTLET MOULDING (UNDER UNITS)
The figure shows the moulding for the front air outlet (optional for
L1
UNDER units).
H
P1
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
3200
500
890
350
450
SOUNDPROOF SUCTION OR OUTLET PLENUM
The figure shows the soundproof plenum to be installed on the
top of the unit.
L
H
P
FRAME
AC
AB
L
mm
P
mm
H
mm
18
EN
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
3200
500
890
350
500
ACCURATE 2.0 AC - AB
DIRECT FREE COOLING PLENUM (UNDER UNITS)
This accessory is installed on the top of the unit, and is used to
take in cool outside air and then deliver it directly into the airconditioned environment. The plenum is supplied with 2
motorised dampers (one for the outside air + 1 for the inside
air), managed by the unit’s microprocessor controlled, which
modulate the quantity of air taken in from the outside to ensure
the room temperature set point is maintained.
L
A
H
P
WARNING:
For correct installation, an elastic gasket should be fitted between
the plenum and the unit.
A PRESSURE-RELIEF DAMPER (supplied with the “FC CONNECTION KIT”) MUST BE USED, SO THAT THE AIR CAN DE DISCHARGED DURING TOTAL FREE COOLING OPERATION.
SECTION A-A
FRONT VIEW
A
TOP VIEW
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
3200
500
890
600
840
ACCURATE 2.0 AC - AB
EN
19
DIRECT FREE COOLING BASE (OVER UNITS)
This accessory is installed on the BOTTOM of the unit, and is
used to take in cool outside air and then deliver it directly into
the air-conditioned environment. The plenum is supplied with 2
motorised dampers (one for the outside air + 1 for the inside
air), managed by the unit’s microprocessor controlled, which
modulate the quantity of air taken in from the outside to ensure
the room temperature set point is maintained.
INSTALLATION EXAMPLE
UNDER
OVER
with free cooling plenum
with free cooling base
WARNING:
For correct installation, an elastic gasket should be fitted between
the plenum and the unit.
A PRESSURE-RELIEF DAMPER (supplied with the “FC CONNECTION KIT”) MUST BE USED, SO THAT THE AIR CAN DE DISCHARGED DURING TOTAL FREE COOLING OPERATION.
L
A
H
P
A
SECTION A-A
FRONT VIEW
TOP VIEW
FRAME
AC
AB
L
mm
P
mm
H
mm
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
0061 0101 0131 0161 0201 0261 0331 0401 0501 0601 0701 0901 1151 1201 1401 1551 1801 2001 2251
0302 0352 0452 0552 0702 0852 0902 1052
1252 1302 1502
600
1000
1550
2100
2650
/
/
485
870
/
500
600
/
DIRECT FREE COOLING CONNECTION KIT (UNDER/OVER UNITS)
C
D
E
F
A
D
B
20
EN
A.
B.
C.
D.
E.
F.
C
Outside rain grill
Pressure-relief damper
Flange
Clamp
Hose
Free cooling plenum / free cooling base
ACCURATE 2.0 AC - AB
OPTIONAL FRESH AIR
The standard filter (G2/G4) and optional (F5/F6/F7/F8) are installed inside the conditioning unit before the finned coil.
Additional pressure drop:
Frame 1
Frame 2
160
200
140
F7
120
F5
100
80
F6
60
G4
40
20
0
1000
1500
2000
Additional pressure drop, Pa
Additional pressure drop, Pa
F8
2500
F8
180
160
F7
140
F5
120
100
F6
80
G4
60
40
20
0
3000
3500
Air flow-rate, m3/h
Frame 3
F7
F5
300
250
F6
200
150
100
50
0
7000
7500
8000
8500
9000
9500 10000
Additional pressure drop, Pa
Additional pressure drop, Pa
350
6500
F8
200
F7
F5
150
F6
100
50
0
8000
Air flow-rate, m3/h
8500
9000
9500 10000 10500 11000 11500 12000 12500
Air flow-rate, m3/h
Frame 5
400
350
F7
250
F5
200
F6
150
100
50
0
11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 21000
Additional pressure drop, Pa
300
Frame 7
F8
F8
Additional pressure drop, Pa
5000
250
F8
6000
4500
Frame 4
400
5500
4000
Air flow-rate, m3/h
350
F7
300
F5
250
F6
200
150
100
50
0
13000 15000 17000 19000 21000 23000 25000 27000 29000 30000
Air flow-rate, m3/h
Air flow-rate, m3/h
Frame 8
350
Additional pressure drop, Pa
F8
300
F7
250
F5
200
F6
150
100
50
0
18000 20000 22000 24000 26000 28000 30000 32000 34000 35000
Air flow-rate, m3/h
OPTIONAL FRESH AIR
The fresh air kit is supllied with G3 filter installed in suction side of
fan, allowing to mix the fresh air with recirculating air.
Connect a flexible pipe diameter 100mm (not supplied) as shown in
the image below.
The fresh air volume is around 5% of nominal air flow of unit.
ACCURATE 2.0 AC - AB
OVER
UNDER
EN
21
WATER CONNECTIONS AND WATER CHARACTERISTICS
For all the water connections (with the exception of the condensate drain), the following are recommended:
- flexible connections to avoid transmitting vibrations and allow
small movements of the air-conditioner;
- joints in three pieces, near the fittings, to simplify the removal of
the unit;
- on-off valves to disconnect the unit from the water circuit:
where possible use ball valves with full opening to minimise
pressure drop.
Check that the cross-section of the chilled water pipes and the
characteristics of the circulating pump are suitable: an insufficient
water flow-rate affects the performance of the air-conditioner.
Check that the water inlet and outlet connections are correct.
Insulate all the chilled water pipes with closed cell material (e.g.:
Armaflex or equivalent), to prevent condensation; the insulation
must allow access to the valves and the three-piece joints.
Check that the water circuit has been filled with an antifreeze
mixture containing the right percentage of ethylene glycol.
Make sure that the water contained in the water circuit meets the
following requirements throughout the entire life of the system:
(temporary hardness). High hardness implies a high risk of
fouling.
a chloride ion concentration higher than the value indiref. 3:
cated will lead to corrosion
ref. 4-5-8: e presence of iron, manganese and oxygen irons will
give rise to corrosion
ref. 6-7: carbon dioxide and hydrogen sulphide are impurities
that lead to corrosion occurring more readily
the typical value in mains water is between 0.2 and 0.3
ref. 9:
ppm. High values will cause corrosion
ref. 10: the presence of ammonia boosts the oxidation capacity of
oxygen
ref. 11: at levels below the value shown in table, there is the
risk of corrosion due to galvanic current running
between the copper and the other less noble metals.
ref.
1
2
3
4
5
6
7
8
9
10
11
Description
hydrogen ion concentration
calcium (Ca) and magnesium (Mg) content
chloride ions
iron ions
manganese ions
carbon dioxide
hydrogen sulphide
oxygen
chlorine
ammonia
carbonate-sulphate ratio
Symbol
pH
Hardness
ClFe3+
Mn2+
CO2
H2S
O2
Cl2
NH3
HCO3- / SO42-
To select the pipeline refer to "Pressure Drops on stainless steel pipes"
N.B.: the water system of the unit is PN16
Values
7.5÷9
4÷8.5 °D
< 150 ppm
< 0.5 ppm
< 0.05 ppm
< 10 ppm
< 50 ppb
< 0.1 ppm
< 0.5 ppm
< 0.5 ppm
>1
where: 1/1.78 °D=1 °Fr con 1°Fr= 10 gr CaCO3 / m3
ppm = parts per million; ppb = parts per billion
In the presence of ethylene glycol (toxic), corrosive compounds
will form over time, and therefore inhibitors need to be added.
When the water is dirty and/or aggressive, an intermediate heat
exchanger must be installed upstream of the heat exchangers on
the chiller assembly.
Explanations
ref. 1:
a hydrogen ion concentration (pH) greater than 9 implies
a high risk of fouling, while a pH less than 7 implies a high
risk of corrosion
ref. 2:
hardness refers to the quantity of Ca and Mg carbonate
dissolved in the water at a temperature below 100 °C
CORRECTION FACTORS
ETHYLENE GLYCOLE
A mix of water plus glycole used has fluid instead of only water cause a cooling capacity reduction of the unit. Multiplay the cooling capacity
for the values reported of the following tables
Iceing temperature
% of glycole on tot. charge
Power factor
Flow factor
P. drops factor
22
EN
cP
cQ
cdp
0
0
1
1
1
-5
12%
0,985
1,02
1,07
-10
20%
0,98
1,04
1,11
-15
28%
0,974
1,075
1,18
-20
35%
0,97
1,11
1,22
-25
40%
0,965
1,14
1,24
ACCURATE 2.0 AC - AB
1
2
3
4
5
6
7 8 9 10 12 14 16 18 20
30
40
50 60 70 80 90100
200
300
400 500
500.000
500.000
400.000
400.000
”
Ø5
s
m/
4,0
s
m/
3,5
s
m/
3,0
s
m/
2,5
s
m/
2,0
s
m/
1,8
s
m/
1,6
s
m/
1,4
300.000
s
m/
1,2
s
m/
1,0
s
m/
0,8
Water flow l/h
Pressure Drops on stainless steel pipes (inch.). Water T .= 10°C
300.000
”
Ø4
200.000
s
m/
0,6
100.000
90.000
80.000
70.000
60.000
50.000
”
Ø3
Ø2
40.000
Ø1
”
Ø4
10.000
9.000
8.000
7.000
6.000
5.000
Ø1
Ø2
40.000
1/2”
10.000
9.000
8.000
7.000
6.000
5.000
1/2”
4.000
/4”
Ø3
3.000
3.000
”
Ø2
2.000
1.000
900
800
700
600
500
Ø
2.000
Ø
1/2”
Ø
3/8”
2”
1 1/
Ø1
20.000
1/4”
”
Ø1
”
Ø3
4.000
100.000
90.000
80.000
70.000
60.000
50.000
30.000
”
Ø5
20.000
1/2”
”
Ø2
”
Ø6
30.000
200.000
1/4”
1.000
900
800
700
600
500
400
400
”
Ø1
300
200
300
200
/4”
Ø3
s
m/
0,8
s
m/
0,6
s
m/
0,4
s
m/
0,2
100
100
1
2
3
4
5
6
7 8 9 10 12 14 16 18 20
30
40
50 60 70 80 90100
200
300
400 500
Linear Pressure Drops, (mm w.c./m)
EXAMPLE OF SELECTION:
• consider a water speed limit inside the pipeline of 1-1,2m/s
• cross the water flow value requested (in the example 5.000l/h)
• extract the pressure drop value of pipe diameter selected (in example 35mm w.c./m)
ACCURATE 2.0 AC - AB
EN
23
1
2
3
4
5
7 8 9 10 12 14 16 18 20
6
30
40
50 60 70 80 90100
200
300
400 500
500.000
500.000
”
Ø5
s
m/
4,0
s
m/
3,5
s
m/
3,0
s
m/
2,5
s
m/
2,0
s
m/
1,8
s
m/
1,6
s
m/
1,4
300.000
s
m/
1,2
s
m/
1,0
400.000
s
m/
0,8
Water Flow l/h
Pressure Drops on stainless steel pipes (inch.). Water T .= 50°C
400.000
300.000
”
Ø4
200.000
200.000
”
Ø3
s
m/
0,6
100.000
90.000
80.000
70.000
60.000
50.000
Ø2
40.000
1/2”
40.000
”
Ø2
”
Ø6
100.000
90.000
80.000
70.000
60.000
50.000
30.000
30.000
”
Ø5
20.000
Ø1
”
Ø4
10.000
9.000
8.000
7.000
6.000
5.000
Ø1
Ø2
10.000
9.000
8.000
7.000
6.000
5.000
1/2”
/4”
Ø3
3.000
”
Ø2
2.000
20.000
1/4”
”
Ø1
”
Ø3
4.000
1/2”
4.000
3.000
2.000
/2”
Ø1
Ø1
1.000
900
800
700
600
500
Ø1
400
1/2”
/8”
Ø3
1/4”
1.000
900
800
700
600
500
400
”
Ø1
300
300
/4”
Ø3
200
200
s
m/
0,8
s
m/
0,6
s
m/
0,4
s
m/
0,2
100
100
1
2
3
4
5
6
7 8 9 10 12 14 16 18 20
30
40
50 60 70 80 90100
200
300
400 500
Linear Pressure Drops, (mm w.c./m)
24
EN
ACCURATE 2.0 AC - AB
1
2
3
4
5
6
7 8 9 10 12 14 16 18 20
30
40
50 60 70 80 90100
200
300
400 500
500.000
500.000
”
Ø5
s
m/
4,0
s
m/
3,5
s
m/
3,0
s
m/
2,5
s
m/
2,0
s
m/
1,8
s
m/
1,6
s
m/
1,4
300.000
s
m/
1,2
s
m/
1,0
400.000
s
m/
0,8
Water Flow l/h
Pressure Drops on stainless steel pipes (inch.). Water T .= 80°C
400.000
300.000
”
Ø4
200.000
200.000
”
Ø3
s
m/
0,6
100.000
90.000
80.000
70.000
60.000
50.000
Ø
40.000
2”
2 1/
”
Ø2
”
Ø6
100.000
90.000
80.000
70.000
60.000
50.000
40.000
30.000
30.000
”
Ø5
Ø1
20.000
”
Ø4
10.000
9.000
8.000
7.000
6.000
5.000
Ø1
Ø2
20.000
1/4”
10.000
9.000
8.000
7.000
6.000
5.000
”
Ø1
”
Ø3
4.000
1/2”
1/2”
4.000
/4”
Ø3
3.000
3.000
”
Ø2
2.000
2.000
/2”
Ø1
Ø1
1.000
900
800
700
600
500
Ø
400
1/2”
1.000
900
800
700
600
500
/8”
Ø3
4”
1 1/
400
”
Ø1
300
300
/4”
Ø3
200
200
s
m/
0,8
s
m/
0,6
s
m/
0,4
s
m/
0,2
100
100
1
2
3
4
5
6
7 8 9 10 12 14 16 18 20
30
40
50 60 70 80 90100
200
300
400 500
Linear Pressure Drops (mm w.c./m)
ACCURATE 2.0 AC - AB
EN
25
CONDENSATE DRAIN
The condensate is removed from the pan located underneath the
coil through a hose with drain trap, already fitted in the unit; the
end of the hose should be connected to the sewerage system in
the building via a rubber or plastic hose with an inside diameter
of 20 mm.
If the air-conditioner is fitted with a humidifier, the condensate is
drained from the humidifier pan, excluding OVER units (see the
following paragraph).
During installation, pour water into the condensate collection pan
so as to fill the drain trap inside the unit with water.
ELECTRICAL CONNECTIONS
Warning: All work must be performed, components selected and materials used in complete accordance with the legislation in force in material in the country concerned, and considering the operating conditions and intended uses of the
system, by qualified personnel.
If the electrical system requires installation of a residual
current circuit breaker to provide protection against indirect contact (fault protection), this must be a type A
device or, if the unit features inverters, type B with
threshold Id=300 mA.
Choose a model that features:
- High frequency current filtering
- Timer to help prevent disconnection due to the load of
stray capacitance on start-up.
Before starting the unit, check the tightness of all the
electrical connections and cables on the unit, as these
may have come loose during handling and transport.
ACCESS TO THE ELECTRICAL PANEL AND CABLE
INLETS
Before performing any work on the electrical parts, make sure
that there is no live voltage and that the disconnecting switch is
open (position “O”); The power section of the electrical panel is
protected by a plastic screen; to remove the screen, open the
main switch and remove the fastening screws.
Part A: connection of the power cable to the
main disconnecting switch IG
N1
4
R1 S1 T1
5
ON
A
0
OFF
2
IG
3
N
1
1 Shielded RS485 or LAN cable outlet;
2 Mains power supply inlet;
3 Remote control and alarm signal cable inlet.
4 Local user terminal
5 Electrical panel
CONNECTION TO THE MAINS - CROSS-SECTION OF
THE CABLES - PROTECTION DEVICES
- Check that the mains voltage corresponds to the rated
values for the unit (voltage, no. of phases, frequency) shown on
the electrical panel.
The power supply voltage must be between ± 10% of
the rated value: operation at voltages outside of these limits
may void the warranty
- Fasten the ends of the power cable to the terminals on the
main switch inside the electrical panel; fully tighten the screws.
L1 L2 L3
Power cable
(provided by the customer)
Connect the yellow-green earth wire to the special terminal
marked 'PE'
ACCESS TO THE BOARD
To access the board, open the front panel and the thermoformed
cover on the electrical panel.
The electronic components are sensitive to discharges of static
electricity from the human body.
Touch an earthed object before handling any electronic component.
MINIMUM CROSS-SECTION OF THE POWER CABLES
The cross-section of the power cable must be chosen according
to the length of the cable and the type of installation, based on
the maximum current input of the air-conditioner FLA and so as
to prevent excessive voltage drops (the power supply voltage
must be between ± 10% of the rated value).
26
EN
The following table shows the minimum recommended cross-sections for the power cables.
- A backup fuse should be fitted upstream of the power
line for short-circuit current up to 10 kA.
ACCURATE 2.0 AC - AB
ELECTRICAL SPECIFICATIONS
Key
B = cooling only with BASIC EC fans
R = cooling only + STD heaters
H = cooling only + humidifier
T = cooling only + STD heaters + humidifier
FLI = Full Load Input
FLA = Full Load Current
SA = Starting amperes (peak current)
Harmonic currents: The units described in this manual comply with EN61000-3-2 for professional equipment.
OVERALL UNIT POWER CONSUMPTION
Frame
Model
AC
Unit power supply
AB
V/ph/Hz
B
R
FLI (kW) FLA (A) FLI (kW) FLA (A)
H
SA(A) FLI (kW) FLA (A)
T
SA(A) FLI (kW) FLA (A)
SA(A)
1
0061
230/1/50
0,5
2,4
4,5
19,8
20
2,7
12,2
12
6,7
29,6
30
1
0061
400/3N/50
0,5
2,4
4,7
8,5
9
2,7
5,6
6
6,9
11,7
12
1
0101
230/1/50
0,5
2,4
4,5
19,8
20
2,7
12,2
12
6,7
29,6
30
1
0101
400/3N/50
0,5
2,4
4,7
8,5
9
2,7
5,6
6
6,9
11,7
12
1
0131
230/1/50
0,5
2,4
4,5
19,8
20
2,7
12,2
12
6,7
29,6
30
1
0131
400/3N/50
0,5
2,4
4,7
8,5
9
2,7
5,6
6
6,9
11,7
12
2
0161
230/1/50
1,0
4,8
9,0
39,6
40
4,7
21,1
21
12,7
55,9
56
2
0161
400/3N/50
1,0
4,8
9,1
16,5
17
4,7
10,3
10
12,8
22,0
22
2
0201
230/1/50
1,0
4,8
9,0
39,6
40
4,7
21,1
21
12,7
55,9
56
2
0201
400/3N/50
1,0
4,8
9,1
16,5
17
4,7
10,3
10
12,8
22,0
22
2
0261
230/1/50
1,0
4,8
9,0
39,6
40
4,7
21,1
21
12,7
55,9
56
2
0261
400/3N/50
1,0
4,8
9,1
16,5
17
4,7
10,3
10
12,8
22,0
22
3
0331
400/3N/50
2,8
4,4
11,8
17,4
17,4
6,6
9,9
9,9
15,6
22,9
22,9
3
0401
0302
400/3N/50
2,8
4,4
11,8
17,4
17,4
6,6
9,9
9,9
15,6
22,9
22,9
3
0501
0352
400/3N/50
2,8
4,4
11,8
17,4
17,4
6,6
9,9
9,9
15,6
22,9
22,9
4
0601
0452
400/3N/50
2,8
4,4
17,8
26,1
26,1
6,6
9,9
9,9
21,6
31,6
31,6
4
0701
0552
400/3N/50
2,8
4,4
17,8
26,1
26,1
6,6
9,9
9,9
21,6
31,6
31,6
5
0901
0702
400/3N/50
5,6
8,8
23,6
34,8
34,8
11,6
17,5
17,5
29,6
43,5
43,5
5
1151
0852
400/3N/50
5,6
8,8
23,6
34,8
34,8
11,6
17,5
17,5
29,6
43,5
43,5
7
1201
0902
400/3N/50
5,6
8,8
23,6
34,8
34,8
11,6
17,5
17,5
29,6
43,5
43,5
7
1401
1052
400/3N/50
5,6
8,8
23,6
34,8
34,8
11,6
17,5
17,5
29,6
43,5
43,5
7
1551
400/3N/50
8,1
12,6
32,1
47,3
47,3
15,6
23,6
23,6
39,6
58,3
58,3
7
1801
1252
400/3N/50
8,1
12,6
32,1
47,3
47,3
15,6
23,6
23,6
39,6
58,3
58,3
8
2001
1302
400/3N/50
8,1
12,6
32,1
47,3
47,3
19,4
28,8
28,8
43,3
63,5
63,5
8
2251
1502
400/3N/50
8,1
12,6
32,1
47,3
47,3
19,4
28,8
28,8
43,3
63,5
63,5
EN
27
ACCURATE 2.0 AC - AB
ELECTRICAL SPECIFICATIONS
Key
FLI = Full Load Input
FLA = Full Load Current
FAN POWER CONSUMPTION (The FLI and FLA values shown below refer to the individual component)
Model
Frame
AC
Unit power supply
AB
EC BASIC
EC HP
V/ph/Hz
V/ph/Hz
Q.tà
FLI (kW)
FLA (A)
V/ph/Hz
Q.tà
FLI (kW)
FLA (A)
1
0061
230/1/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
1
0061
400/3N/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
1
0101
230/1/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
1
0101
400/3N/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
1
0131
230/1/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
1
0131
400/3N/50
230/1/50
1
0,48
2,4
230/1/50
1
0,5
3,2
2
0161
230/1/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
2
0161
400/3N/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
2
0201
230/1/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
2
0201
400/3N/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
2
0261
230/1/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
2
0261
400/3N/50
230/1/50
2
0,48
2,4
230/1/50
2
0,5
3,2
3
0331
400/3N/50
400/3/50
1
2,8
4,4
400/3/50
1
3,6
5,7
3
0401
0302
400/3N/50
400/3/50
1
2,8
4,4
400/3/50
1
3,6
5,7
3
0501
0352
400/3N/50
400/3/50
1
2,8
4,4
400/3/50
1
3,6
5,7
4
0601
0452
400/3N/50
400/3/50
1
2,8
4,4
400/3/50
1
3,6
5,7
4
0701
0552
400/3N/50
400/3/50
1
2,8
4,4
400/3/50
1
3,6
5,7
5
0901
0702
400/3N/50
400/3/50
2
2,8
4,4
400/3/50
2
3,6
5,7
5
1151
0852
400/3N/50
400/3/50
2
2,8
4,4
400/3/50
2
3,6
5,7
7
1201
0902
400/3N/50
400/3/50
2
2,8
4,4
400/3/50
2
3,6
5,7
7
1401
1052
400/3N/50
400/3/50
2
2,8
4,4
400/3/50
2
3,6
5,7
7
1551
400/3N/50
400/3/50
3
2,7
4,2
400/3/50
3
2,75
4,30
7
1801
1252
400/3N/50
400/3/50
3
2,7
4,2
400/3/50
3
2,75
4,30
8
2001
1302
400/3N/50
400/3/50
3
2,7
4,2
400/3/50
3
2,75
4,30
8
2251
1502
400/3N/50
400/3/50
3
2,7
4,2
400/3/50
3
2,75
4,30
28
EN
ACCURATE 2.0 AC - AB
ELECTRICAL SPECIFICATIONS
Key
FLI = Full Load Input
FLA = Full Load Current
HEATER POWER CONSUMPTION (The FLI and FLA values shown below are totals)
Frame
Model
AC
Unit power supply
AB
STD
V/ph/Hz
V/ph/Hz
N.ro elementi
HIGH POWER
FLI (kW) FLA (A)
V/ph/Hz
N.ro elementi
FLI (kW) FLA (A)
1
0061
230/1/50
230/1/50
2
4,0
17,4
230/1/50
3
6,0
1
0061
400/3N/50
400/3/50
3
4,2
6,1
400/3/50
3
6,0
8,7
1
0101
230/1/50
230/1/50
2
4,0
17,4
230/1/50
3
6,0
26,1
1
0101
400/3N/50
400/3/50
3
4,2
6,1
400/3/50
3
6,0
8,7
1
0131
230/1/50
230/1/50
2
4,0
17,4
230/1/50
3
6,0
26,1
1
0131
400/3N/50
400/3/50
3
4,2
6,1
400/3/50
3
6,0
8,7
2
0161
230/1/50
230/1/50
2
8,0
34,8
230/1/50
3
12,0
52,2
2
0161
400/3N/50
400/3/50
3
8,1
11,7
400/3/50
3
12,0
17,3
2
0201
230/1/50
230/1/50
2
8,0
34,8
230/1/50
3
12,0
52,2
2
0201
400/3N/50
400/3/50
3
8,1
11,7
400/3/50
3
12,0
17,3
2
0261
230/1/50
230/1/50
2
8,0
34,8
230/1/50
3
12,0
52,2
2
0261
400/3N/50
400/3/50
3
8,1
11,7
400/3/50
3
12,0
17,3
3
0331
400/3N/50
400/3/50
3
9,0
13,0
400/3/50
5
15,0
21,7
3
0401
0302
400/3N/50
400/3/50
3
9,0
13,0
400/3/50
5
15,0
21,7
3
0501
0352
400/3N/50
400/3/50
3
9,0
13,0
400/3/50
5
15,0
21,7
4
0601
0452
400/3N/50
400/3/50
5
15,0
21,7
400/3/50
6
18,0
26,0
4
0701
0552
400/3N/50
400/3/50
5
15,0
21,7
400/3/50
6
18,0
26,0
5
0901
0702
400/3N/50
400/3/50
6
18,0
26,0
400/3/50
9
27,0
39,0
5
1151
0852
400/3N/50
400/3/50
6
18,0
26,0
400/3/50
9
27,0
39,0
7
1201
0902
400/3N/50
400/3/50
6
18,0
26,0
400/3/50
9
27,0
39,0
7
1401
1052
400/3N/50
400/3/50
6
18,0
26,0
400/3/50
9
27,0
39,0
7
1551
400/3N/50
400/3/50
8
24,0
34,7
400/3/50
12
36,0
52,0
7
1801
1252
400/3N/50
400/3/50
8
24,0
34,7
400/3/50
12
36,0
52,0
8
2001
1302
400/3N/50
400/3/50
8
24,0
34,7
400/3/50
12
36,0
52,0
8
2251
1502
400/3N/50
400/3/50
8
24,0
34,7
400/3/50
12
36,0
52,0
ACCURATE 2.0 AC - AB
EN
26,1
29
ELECTRICAL SPECIFICATIONS
Key
FLI = Full Load Input
FLA = Full Load Current
HUMIDIFIER (The FLI and FLA values shown below refer to the individual component)
Frame
30
Model
Unit power supply
AB
STD
FLI (kW)
FLA (A)
1
0061
230/1/50
230/1/50
1
2,3
9,8
1
0061
400/3N/50
400/3/50
1
2,3
3,2
1
0101
230/1/50
230/1/50
1
2,3
9,8
1
0101
400/3N/50
400/3/50
1
2,3
3,2
1
0131
230/1/50
230/1/50
1
2,3
9,8
1
0131
400/3N/50
400/3/50
1
2,3
3,2
2
0161
230/1/50
230/1/50
1
3,8
16,3
2
0161
400/3N/50
400/3/50
1
3,8
5,5
2
0201
230/1/50
230/1/50
1
3,8
16,3
2
0201
400/3N/50
400/3/50
1
3,8
5,5
2
0261
230/1/50
230/1/50
1
3,8
16,3
2
0261
400/3N/50
400/3/50
1
3,8
5,5
3
0331
400/3N/50
400/3/50
1
3,8
5,5
3
0401
0302
400/3N/50
400/3/50
1
3,8
5,5
3
0501
0352
400/3N/50
400/3/50
1
3,8
5,5
4
0601
0452
400/3N/50
400/3/50
1
3,8
5,5
4
0701
0552
400/3N/50
400/3/50
1
3,8
5,5
5
0901
0702
400/3N/50
400/3/50
1
6,0
8,7
5
1151
0852
400/3N/50
400/3/50
1
6,0
8,7
7
1201
0902
400/3N/50
400/3/50
1
6,0
8,7
7
1401
1052
400/3N/50
400/3/50
1
6,0
8,7
7
1551
400/3N/50
400/3/50
1
7,5
11,0
7
1801
1252
400/3N/50
400/3/50
1
7,5
11,0
8
2001
1302
400/3N/50
400/3/50
1
11,3
16,2
8
2251
1502
400/3N/50
400/3/50
1
11,3
16,2
EN
AC
V/ph/Hz
V/ph/Hz
Q.tà
ACCURATE 2.0 AC - AB
COMMISSIONING AND TESTING
COMMISSIONING PROCEDURE
Power up the air-conditioner electrical panel and close the
main disconnecting switch on the unit (position 'I');
Arm all the cutouts on the electrical panel;
Arm the cutout in the auxiliary circuits and check that the
control board is powered;
Start the air-conditioner using the buttons on the user terminal;
Check that the direction of rotation of the fans is correct;
if not, disconnect power supply from the units and reverse two
phases of the power cable (see the Installation Manual, paragraph
"ELECTRICAL CONNECTIONS").
Check that the chilled water valve is working correctly;
Check that the sections of corrugated pipe with the function of drain trap (both inside and outside of the air-conditioner)
have been filled with water during installation.
If an alarm is activated, refer to the control panel instruction
manual.
INSTRUMENTS AND ALARMS
The air-conditioner is fitted with the following instruments:
- Air flow sensor (differential pressure switch);
- Temperature sensoror room temperature and humidity sensor (on the units with humidity control);
- Outlet air limit temperature sensor.
Some versions, in addition, have the following sensors:
- Safety thermostat (in the versions with electric heaters),
with the reset button accessible on the right-hand side of the
electrical panel
In addition, the following optional devices may be available:
- Flood sensor made up of:
a) device to be inserted in the special socket on the electrical
panel;
b) flood sensor (or sensors, connected in parallel) to be positioned at the points monitored;
- Fire and smoke sensors;
- Hot water temperature sensor, for reading and enabling
post-heating with hot water;
- Dirty filter sensor (differential pressure switch)
- The pressure test points for the air flow and dirty filter differential pressure switches are connected in parallel; (on the
OVER units)
- The positive pressure test point (for both the dirty filters and
air flow) is located on the right-hand side of the base of the
unit;
- The negative pressure test point for the air flow sensor is located in position for measuring the pressure upstream of the fan.
- The negative pressure test point for the dirty filter sensor is
located immediately downstream of the filters, in the direction
of air flow. If the air filters are installed right next to the coil, the
negative pressure test point is located in the space between the
coil and the filters.
CALIBRATING THE CONTROL AND SAFETY DEVICES
After starting the air-conditioner, make the following adjustments
(see the microprocessor controller manual):
- Room temperature (cooling and heating set point).
- Relative humidity (set point for humidification and dehumidification);
Description
Safety thermostat (for models fitted with electric heater)
ACCURATE 2.0 AC - AB
- Dirty filter differential pressure switch: see the paragraph on
“CALIBRATING THE DIRTY FILTER SENSOR”.
The calibration values of the control and safety devices must not
be altered.
Activation
320 °C (opening)
Differential
-
Reset
Manual reset
EN
31
CALIBRATING THE AIR FLOW SENSOR
The air flow differential pressure switch (standard) must be activated in the event of a fan malfunction (either the only fan, or one
of the fans if more than one).
As the difference in pressure between the fan intake and outlet
depends on the air flow-rate, the instrument may need to be
recalibrated after installation, checking that the contact closes
when the fan is operating normally.
To calibrate the pressure switch:
• simulate a fault in the fan system (stop the fan - if there is just
one - or one of the fans on the unit) and check that the pressure switch is activated;
• if the device is not activated, progressively increase the calibration value of the pressure switch
Pressure test points
+
-
A
To calibrate the pressure switch, remove the plastic cover (A) by
unscrewing the two screws (B).
Use the adjustment screw (E) to calibrate the differential pressure
switch on a scale from 0.5 to 4.0 mbar (50 to 400Pa).
If having to replace the pressure switch, unscrew the two fastening screws (D), remove the rubber hoses connected to the pressure test points (+) and (-) and remove the electrical cables connected to terminals 1, 2 and 3.
To install the new pressure switch, perform the same operations
in the reverse order, inserting the cables from point (C).
D
B
1
E
3
mbar
mbar
2
C
B
D
CALIBRATING THE DIRTY FILTER SENSOR
The dirty filter differential pressure switch (optional) must be calibrated according to the pressure drop, which depends not only
on how dirty the filters are, but also on air flow-rate.
The calibration must be performed with a clean filter, as follows:
- switch the unit on
- progressively cover the surface of the air filter and make sure
that the pressure switch is activated when around 50-60% covered;
- if the device is not activated, progressively reduce the calibration
of the pressure switch;
- if the device is activated too early, increase the calibration.
TEMPERATURE AND HUMIDITY PROBE
The figure shows the optional temperature and humidity probe.
If having to replace the probe, release the white plastic cover by
pressing point (A) with a screwdriver or a pointed object; lift the
cover (B) to access the fastening screws (C) and the terminals
(D).
For the probe electrical connection use a shielded cable; the connections to the terminals on the board are shown on the wiring
diagram.
B
D
A
C
80
Shielded cable
inlet
H
M
T
EN
OUT
32
OUT
+
126 mm
Fastening
holes
ACCURATE 2.0 AC - AB
SERVOMOTOR AND WATER VALVE
WARNING: Disconnect power before working on the
servomotor
On the controllers units ACCURATE 2.0 the position of the
servomotor is proportional to the control voltage, between 0 and
10 Vdc. The servomotor stops:
- automatically at the end of its travel;
- in the position of equilibrium, corresponding to the control
voltage;
- in the current position, when cutting off power.
OPERATION OF THE MVX52 - 0÷10V SERVOMOTORS
The opening of the valve can be controlled by checking the position using the indicator located on the top of the servomotor
2
IN
OUT
EMERGENCY MANUAL OPERATION
The valve can be operated manually, in the event of faults to the
servomotor or the control system, using the manual control knob
(not supplied).
ACCURATE 2.0 AC - AB
EN
33
Type
Rated voltage
SSB81
SSB61
AC 24 V
AC/DC 24 V
Description
This actuator with 3point or 0÷10V signal is adapt for 2 or 3
way valve with 5,5mm stroke
Run time at
50 Hz
Control
signal
150 s
75 s
3-position
DC 0...10 V
Manual override
3 mm
A
DC 0...10 V control signal SSB61
• The valve opens / closes in proportion to the control signal at Y.
• At DC 0 V, the valve is fully closed (A ? AB).
• When power supply is removed, the actuator maintains its current position.
Operation
A 3 mm hexagonal socket wrench can be used to move the actuator to any position between 0 and 1. If a control signal from the
controller is present, then this takes priority in determining the
position.
34
EN
3 mm
0
1
4891Z13
Position indicator in
position 0:
Valve closed
(Y, Y1) A
3-position control signal SSB81
• Voltage at Y1: Stem extends Valve opens
• Voltage at Y2: Stem retracts Valve closes
• No voltage at Y1 and Y2: Actuator maintains its current position.
B
m
3m
Function
When the actuator is driven by DC 0…10 V control voltage or by
a 3-position signal, it produces a stroke which is transmitted to
the valve stem. The description of operation in this document
applies to the valve versions which are fully closed when deenergized (NC).
0
1
4891Z14
Position indicator in
position 1:
Valve open
B (Y,Y2)
Maintenance
The actuators are maintenance-free. When carrying out service
work on the plant, following must be noted:
• If necessary, disconnect electrical connections from the terminals!
• The actuator must be commissioned only with a correctly
mounted valve in place!
Repair
SSB... actuators cannot be repaired; the complete unit must be
replaced.
ACCURATE 2.0 AC - AB
Type
Rated voltage
SSC819
SSC619
AC 24 V
AC/DC 24 V
Function
When the actuator is driven by a 3-position or DC 0…10 V control signal, it generates a stroke which is transmitted to the valve
stem.
DC 0...10 V control - SSC619
• The valve opens / closes in proportion to the control signal at Y
• At DC 0 V, the valve is fully closed
• In the event of a power failure, the actuator maintains its current position
Auto calibration - SSC619
When the AC/DC 24 V supply is applied for the first time, the
actuators calibrate themselves independent of the control signal.
In this process, the actuator drives the valve to the mechanical
end stops and stores the associated positions permanently in the
form of electronic values. The positioning signal is only active on
completion of this calibration process. Calibration takes about 60
seconds.
3-position
DC 0...10 V
Manual override
The rotary knob can be used to drive the actuator into any position between 0 and 1.
However, if a control signal from the controller is present, this will
take priority in determining the position.
A
B
A
B
1
3-position actuators SSC819
• Voltage at Y1: Actuator stem extends and valve opens
• Voltage at Y2: Actuator stem retracts and valve closes
• No voltage at Y1 or Y2: Actuator maintains the current position
150 s
30 s
Control
signal
0
Description
This actuator with 3point or 0÷10V signal is adapt for 2 or 3 way
valve with 5,5mm stroke
Run time at
50 Hz
1
(Y, Y1)
A
B
0
(Y2)
Position indicator in
position 1 = OPEN
Position indicator in
position 0 = CLOSED
Maintenance
When servicing the actuator:
• Switch off power
• If necessary, disconnect the terminals
• The actuator must only be commissioned with a correctly
mounted valve in place!
Repair
The SSC... actuators cannot be repaired. They must be replaced as
a complete unit.
1
2
3
ACCURATE 2.0 AC - AB
EN
35
Description
This actuator with 3point or 0÷10V signal is adapt for 2 or 3 way valve with 20mm stroke
SQX82:
SQX62:
2
3
4
5
1
1
Terminal strip
SQX82...
3-position positioning signal
• Voltage on Y1: actuator stem extends, valve opens
• Voltage on Y2: actuator stem retracts, valve closes
• No voltage on Y1 and Y2: actuator stem remains in the respective position
2
3
4
5
Button S3 (calibration)
LED, red / green (operating status indication)
Terminal strip
DIL switches:
switch S1: change-over flow characteristic «LOG» /
«LIN» *)
switch S2: change-over signal R «0-10 V, 4-20 mA» /
«1000 Ω» *)
(*) bold print = factory setting
SQX62...
Y, R signals: DC 0...10 V
The SQX62 is either controlled via terminals Y and/or R.The
recorded positioning signals control the synchronous motor
by means of microprocessor electronics.
• Signal Y, R increasing: actuator stem extends, valve opens
• Signal Y, R decreasing: actuator stem retracts, valve closes
• Signal Y, R constant: actuator stem remains in the respective
position
Calibration SQX62
The minimum stroke of the valve is 15 mm. The LED does not indicate a calibration error when the stroke is < 15 mm
The stem extends to the maximum position with the maximum positioning signal DC 10 V.
Calibration
1. Pressing button S3 starts calibration
2. Actuator moves to «0 %» stroke position (valve closed)
3. Actuator moves to «100 %» stroke position (valve open)
4. Measured values saved in microprocessor
green LED flashes
Normal operation
5. Actuator moves to the position as indicated by signals Y or R
green LED is lit permanently
A flashing red LED indicates a calibration error.
36
EN
ACCURATE 2.0 AC - AB
Indication of operating state SQX62
LED
Green
Red
Both
Indication
Lit
Function
Control mode
Remarks, troubleshooting
Automatic operation; everything o.k.
Flashing
Calibration
Lit
Internal error
Wait until calibration is finished
(green or red LED will be lit)
Troubleshooting, eventually replace actuator
Flashing
Calibration error
Dark
No power supply
Electronics faulty
Troubleshooting, recalibrate
(operate button S3 1x)
Check mains network, check wiring
Replace actuator
2 WAY VALVE CLOSE-OFF
For applications where the 2 way valve is needed, verify the Close Off value in table below if they are suitable with the system. For different
value, make specific request.
Frame
FRAME 1
FRAME 2
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
Frame
FRAME 3
FRAME 4
FRAME 5
FRAME 7
FRAME 8
AC Model
0061
0101
0131
0161
0201
0261
0331
0401
0501
0601
0701
0901
1151
1201
1401
1551
1801
2001
2251
2 WAY VALVE CLOSE-OFF
Actuator (6)
Valve model
MVX
VTX
MVX
VTX
MVX
VTX
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SQX
VXG
SQX
VXG
SQX
VXG
SQX
VXG
SQX
VXG
SQX
VXG
Kvs
2,5
4,0
4,0
6,3
6,3
6,3
16
16
16
25
25
25
25
40
40
40
40
40
40
close off* (kPa)
100
100
100
300
300
300
175
175
175
75
75
75
75
300
300
300
300
300
300
AB Model
0302
0352
0452
0552
0702
0852
0902
1052
1252
1302
1502
2 WAY VALVE CLOSE-OFF
Actuator (6)
Valve model
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SSC
VXP
SQX
VXG
SQX
VXG
SQX
VXG
Kvs
10
10
16
16
16
16
25
25
40
40
40
close off* (kPa)
300
300
175
175
175
175
75
75
300
300
300
*close off = Maximum permissible differential pressure at which the motorised valve will close securely against the pressure
ELECTRIC HEATERS
The overall power of the electric heaters is divided into a number
of elements.
The colour of the wires on each element has the following meaning:
• BLACK wire = low power element
• WHITE wire = high power element
• RED wire = common
The wires for each element are connected to contactors on the
electrical panel so as to balance the load between the phases and
create three stages of power (see the wiring diagrams on the
unit).
If having to replace the electric heaters, disconnect power to the
air-conditioner and wait until the heating elements have cooled
down. After having replaced the heaters, make sure the earth is
connected.
ACCURATE 2.0 AC - AB
EN
37
HUMIDIFIER
SYSTEM COMPONENTS
Upon request, the air-conditioning unit can be fitted with an immersed electrode humidifier.
1
Humidifier interface board: A3; (inside the electrical panel).
2
Current transformer TA1 (inside the electrical panel) for
3
4
6
measuring the current input of the steam cylinder.
3
Water fill tank.
4
High water level electrodes in the steam cylinder.
5
Overflow pipe (BEHIND THE CYLINDER).
6
Boiler cylinder (or steam cylinder).
7
Water fill solenoid valve: YV1.
8
Cylinder drain solenoid valve: YV2.
9
Microprocessor control board: A1.
10 Temperature and humidity probe: BH1.
KM4
2. TA1
3
4
1.
7
9.
5
7. YV1
6.
8. YV2
10. BH1
8
HUMIDIFIER OPERATING PRINCIPLE
In the immersed electrode humidifier, the current that runs
between the electrodes, through the water contained in the boiler cylinder, generates the heat required to boil the water.
By controlling the level of the water and the concentration of
salts inside the steam cylinder (6) using the fill (7) and drain (8)
solenoid valves, the amount of current delivered can be regulated,
and measured using a current transformer (2).
When steam production is required, the humidifier contactor
closes (see the wiring diagram) so as to supply power to the
immersed electrodes.
When the current falls below the set value due to the lowering of
the water level, the fill valve (7) is opened.
The drain valve (8) is activated cyclically, depending on the characteristics of the supply water, so as to maintain the optimum salt
concentration inside the cylinder (6).
The only periodical maintenance operations required are the
inspection and cleaning of the parts in the steam production unit.
The operations indicated below should be performed annually,
preferably before shutting down the unit in summer.
38
EN
STEAM CYLINDER
The steam cylinder requires periodical cleaning to remove the
scale deposits that form on the surface of the electrodes and the
flakes that deposit on the filter at the base of the cylinder.
To remove the cylinder, proceed as follows:
• completely drain the water from the boiler; to do this, see the
paragraph “MANUAL CONTROL” in the EVOLUZIONE+
controller instruction manual;
• disconnect the power supply by opening the main switch on
the electrical panel;
• remove, from the top of the cylinder, the hose that carries the
steam to the distributor;
• disconnect the power connections by unscrewing the knobs on
the cable ends and remove the plugs from the level electrodes;
• release the strap that secures the cylinder to the unit;
• slide the cylinder out upwards
The steam cylinder can be reused a number of times after cleaning the electrodes: if, however, the wear on the grills of electrodes
is such that these cannot be regenerated, they must be replaced.
The only spare part is the complete cylinder body (with filter
included).
ACCURATE 2.0 AC - AB
FILL AND DRAIN ASSEMBLIES
To ensure the correct operation of the humidifier, the supply/fill and
drain assemblies need to be inspected periodically.
Proceed as follows:
- completely drain the water from the boiler using the MANUAL
CONTROLS on the controller A1;
- disconnect the power supply by opening the main switch on the
electrical panel;
- remove the fill pipe from the 3/4 GAS fitting on the fill solenoid
valve;
- remove and clean the filter located inside the solenoid valve fitting;
- dismantle the drain assembly (shown in Figure 13), clean the pipes
and remove any flakes of scale from the cup-drain trap.
HUMIDIFIER POWER SUPPLY
Underneath the fill solenoid valve on the steam production unit is
the threaded male fitting (V) for the humidifier water supply.
This is already fitted with a plastic hose, diameter 6 mm, for connection to the building's water supply (see figure, point F).
OUT
Ø 32mm
position:V-F
V: Steam production unit - inlet connection (threaded male fitting 3/4”G);
F: Rubber hose, diameter: Ø 6mm.
To supply the humidifier, use drinking water without any chemical
treatment or demineralisation.
The characteristics of the water that supplies the humidifier must
be within the following values:
LIMIT VALUES FOR IMMERSED ELECTRODE HUMIDIFIER FEED WATER WITH
MEDIUM-HIGH CONDUCTIVITY
Mains pressure
bar
Hydrogen ions
pH
Specific conductivity at 20°C
µS/cm
σR, 20 °C
Total dissolved solids
TDS
mg/l
Dry residue at 180°C
R180
mg/l
Total hardness
TH
mg/l CaCO3
Temporary hardness
mg/l CaCO3
Iron + Manganese
mg/l Fe + Mn
Chlorides
ppm Cl
Silica
mg/l SiO2
Residual chlorine
mg/l ClCalcium sulphateo
mg/l CaSO4
Metallic impurities
mg/l
Solvents, diluents, soaps, lubricants
mg/l
IN
3/4”G
Ø 6mm
LIMITS
Min
1
7
300
(1)
(1)
100(2)
60(3)
0
0
0
0
0
0
0
Max
8
8,5
1250
(1)
(1)
400
300
0,2
30
20
0,2
100
0
0
(1) Values depending on specific conductivity; in general: TDS ≅ 0,93 * σ20; R180 ≅ 0,65 * σ20
(2) not lower than 200% of the chloride content in mg/l of Cl(3) not lower than 300% of the chloride content in mg/l ofClThe cylinder supplied as indicated in the price list refers to the model for medium conductivity (350...750 µS/cm).
Models are available upon request for low conductivity (125-350 µS/cm) or high conductivity (750-1250 µS/cm).
Contact the office to a specific quotation.
ACCURATE 2.0 AC - AB
EN
39
HUMIDIFIER AND CONDENSATE DRAIN
Underneath the drain solenoid valve on the steam production
unit is an attachment for draining the water.
This is already fitted with a hose coupling for connecting the hose
running to the sewerage system in the building.
A rubber or plastic hose should be used, resistant to 100°C, with
an inside diameter of 32 mm.
Fit a trap in the section of the hose outside of the unit to avoid
bad odours and to prevent water from overflowing from the
humidifier pan.
During installation, pour water into the condensate collection pan
and the humidifier pan, so as to fill the drain traps outside and
inside the unit with water.
Downstream of the drain trap ensure a minimum slope of 1%.
WARNING: the water exiting the steam cylinder is very hot.
The humidifier drain hose must not be fastened to electrical
cables and must run down vertically so as to avoid any contact
with these cables.
CONDENSATE DRAIN PUMP AND HUMIDIFIER DRAIN PUMP
Depending on the version, a STD condensate drain pump (low
temperature) or high temperature condensate drain pump is
available, the latter with mechanical features such as to be able to
withstand the high temperatures of the water exiting the steam
cylinder.
40
EN
The pump must be located below the drain fitting, according to
the instructions contained in the packaging.
Check that the head is sufficient to lift the condensate to the
point of drainage.
ACCURATE 2.0 AC - AB
CONDENSATE DRAIN PUMP AND HUMIDIFIER DRAIN PUMP
Depending on the version, a condensate drain pump is available
(for versions B and R) or a humidifier drain pump (for versions H
and T) with mechanical features such as to be able to resist the
high temperatures of the water exiting the steam cylinder.
The pump must be located below the drain fitting, according to
the instructions contained in the packaging.
Check that the head is sufficient to lift the condensate to the
point of drainage.
STD CONDENSATE DRAIN PUMP (LOW WATER TEMPERATURE)
Technical specifications:
Tank capacity: 2 litres
Recommended maximum head: 4.6 m
Maximum water flow-rate: 288 l/h with zero head
Rated power: 0.6 A, 230 VAC
Noise level ≤ 60 dB with maximum head
Shutdown protection on overheating with auto-reset thermal relay
Maximum drain water temperature: 50°C
Non-return valve as standard
Power cable and alarm cable supplied (2 m long)
Frame with drilled rear plate for wall mounting
Two inlet openings to connect multiple units (25 mm)
Transparent cover for quick inspection
Made from fire resistant plastic
Safety switch: max 4 A
Dimensions:
Height: 170 mm
Width: 235 mm
Depth: 140 mm
Weight: 1.75 kg
Electrical connections:
Brown: Line
Blue: Neutral
Green/yellow: Earth
Black: N/C
Black: Common
Installation notes
This pump is designed to be installed only horizontally, resting the
base on a perfectly flat, horizontal surface or fastening it horizontally to the wall through the holes provided on the frame.
The pump requires a drain hose with an inside diameter of 6 mm
or 9 mm.
IMPORTANT:
1) The safety switch should always be used
2) The drain pump should be powered separately from the unit
that produces the condensate, so as to allow the pump to continue draining the water even if the unit itself shuts down.
Maintenance guide
At least once every 6 months, pour a bactericidal solution into
the tank, to prevent accumulation of residues and sludge at the
bottom.
These substances may cause the float to malfunction or block the
non-return valve that the drained water flows through.
STD CONDENSATE PUMP PERFORMANCE
300
FLOW-RATE IN LITRES/HOUR
The pumps with tank are designed to collect the condensate produced by the air-conditioning unit.
These start automatically when the float rises and have a discharge head of 4 metres.
The pump is fitted with two switches, activated by a float system.
One is used to start the centrifugal pump, and the other is used
as a high level safety switch.
The top part of the pump is made from transparent plastic, for
quick and easy inspection of the internal components, and is supplied with a 2 metre long cable with push-in quick coupling to
simplify installation and maintenance.
In any case, the pump with tank must be installed below the
source of condensate.
Make sure the hoses are not choked or twisted along the path
between the pump and the point of drainage.
Securely fasten the hoses with a clamp to the pump outlet fitting,
to prevent them from coming loose and consequently causing
water to be released at high pressure.
250
200
150
100
50
0
0
1
2
3
4
5
HEAD IN METRES
NB: Users must check that any chemicals contained in the condensate are compatible with operation of the pump.
• Do not use the pump to drain water at temperatures exceeding
50 °C.
• Do not use with demineralised water (this has been proven to
damage the mechanical parts of the pump)
IMPORTANT:
Test pump operation by filling it with water until the motor
starts, to check for any leaks and verify correct drainage of the
water.
SAFETY SWITCH
BLACK
BLACK
PUMP
MOTOR
PUMP START
SWITCH
LINE
NEUTRAL
EARTH
PUMP FRAME
ACCURATE 2.0 AC - AB
EN
41
CONDENSATE DRAIN PUMP FOR HIGH WATER TEMP. (HUMIDIFIER)
SAFETY SWITCH
BLACK
BLACK
PUMP
MOTOR
LINE
NEUTRAL
EARTH
PUMP START
SWITCH
PUMP FRAME
Technical specifications:
Tank capacity: 4 litres
Recommended maximum head: 6 m
Maximum water flow-rate: 900 l/h with zero head
Rated power: 0.6 A, 230 VAC
Power cable (2 m long)
Safety switch: max 4 A
Power supply voltage 220/240 VAC
Current draw: 0.7 A
Power consumption: 175 W
Dimensions
Height: 205 mm
Width: 300 mm
Depth: 150 mm
Weight: 3.6 kg
Electrical connections
Brown: Line
Blue: Neutral
Green/yellow: Earth
2 x black: Safety switch
Maintenance guide
At least once every 6 months, pour a bactericidal solution into
the tank, to prevent accumulation of residues and sludge at the
bottom that may cause the pump to malfunction.
NB: Users must check that any chemicals contained in the condensate are compatible with operation of the pump.
IMPORTANT: Test pump operation by filling it with water until
the motor starts, to check for any leaks and verify correct
drainage of the water.
FLOW-RATE IN LITRES/HOUR
These pumps are designed to collect the hot water produced by
the humidifier drain cycles, as well as the condensate produced.
The pump body is made from Cycoloy, a heat-resistant material,
the pre-wired safety float is a low voltage switch used to stop the
drain cycle in the unlikely event where the pump malfunctions.
The pump is started by internal float switches.
1400
1200
1000
800
600
400
200
0
1
2
3
4
5
6
7
8
9
10
HEAD IN METRES
Installation notes:
This pump is designed to be installed only horizontally, resting the
base on a perfectly flat, horizontal surface or fastening it horizontally to the wall through the holes provided on the frame.
The pump requires a drain hose with an inside diameter of 9 mm.
Make sure the hoses are not choked or twisted along the path
between the pump and the point of drainage.
Securely fasten the hoses with a clamp to the pump outlet fitting,
to prevent them from coming loose and consequently causing
water to be released at high pressure.
IMPORTANT:
The pre-wired safety switch must always be used.
42
EN
ACCURATE 2.0 AC - AB
DOUBLE POWER SUPPLY WITH AUTOMATIC SWITCHING
The motorised changeover switches automatically manage
changeover under load between two single-phase or three-phase
power supplies, or manually for emergency operations.
These transfer switching (TSE) devices are suitable for low voltage systems with interruption of the supply to the load during
transfer.
• The model supplied in the automatic version checks the source
and switches over automatically, based on the configurable parameters indicated below:
Hexagonal Metric
Allen size 4
44,1 lb-in 5,0 Nm
AUT
Click
Hexagonal Metric
Allen size 5
Max 88,2 lb-in 10 Nm
4 mm min
3/16" min
8 mm max
5/16" max
10 to 70 mm2
# 8 to # 00 AWG
6 to 50 mm2
# 10 to # 00 AWG
15 mm / 0,59 "
230/127 Vac MODEL
400/230 Vac MODEL
+∆U/ +∆F
+∆U/ +∆F
HYST
Un
HYST
C
AUT
AUT
AUT
∆U : 5 → 20%
∆F : 3 → 10%
HYST : 20% ∆U/F
Un (P-P) : 380 → 420 Vac
Un (P-N) : 220 → 240 Vac
50 Hz
10
AC E G
6
60 Hz
A: 3P
B: 1P
E:
F:
C: 50Hz
D: 60Hz
G:
H:
5 3
V
B DF H
E
20
5
D
F
HYST
-∆U/ -∆F
∆U : 5 → 20%
∆F : 3 → 10%
HYST : 20% ∆U/F
OFF
FAULT OK WAIT !
Un
-∆U/ -∆F
Un (P-P) : 208 → 240 Vac
Un (P-N) : 120 → 138 Vac
ON
HYST
Un
%
U
PP
PN
10
10
3
20
0
F
s
60
MFT
0
min
AUT
30
CLIC !
MRT
RESET SOFT
= 2s
U/F
HYST
U/F
HYST
ON
OFF
TEST
MODE 1
MODE 2
HYST
MFT
MFT : 0 → 60 sec.
ACCURATE 2.0 AC - AB
HYST
MRT
MRT : 0 → 30 min.
EN
43
MAINTENANCE
This section, aimed above all for the end user, is extremely important for the correct operation of the appliance.
Just a few operations completed scrupulously and regularly will
avoid serious damage to the components and expensive repairs
by specialist personnel.
This section, aimed above all for the end user, is extremely important for the correct operation of the appliance.
Just a few operations completed scrupulously and regularly will
avoid serious damage to the components. Only authorized and
specialist personnel can operate into the units.
The maintenance operations can be summarised as follows:
- Cleaning the air filter.
- Check and clean the drains
- Check the humidification system.
- General examination of the overall operation of the appliance.
- Visual check of the condition of the pressurised containers.
General examination of operation
This is a general examination aimed at comparing the operation
of the appliance with the last check performed.
Consequently, any differences in the operating characteristics
over time can be highlighted.
A detailed and periodical visual check of the appliance and general
cleaning are always important to ensure correct operation.
The above-mentioned operations can in general be performed
once a month.
Naturally, in special situations and specific installations the frequency may change.
A well maintained system is unlikely to cause disruptions and
stoppages to the production cycles.
After 10 years working a complete checking is recommended.
Cleaning the air filter
The gradual fouling of the filters reduces the flow-rate of the conditioned air, with a consequent reduction in cooling capacity.
In the direct expansion units, a reduction in the air flow-rate may
cause the activation of the low pressure switch and/or cause serious damage to the compressor.
This can be avoided by the periodical cleaning of the filters.
The frequency at which the filters must be checked exclusively
depends on the amount of dust in the environment.
In any case, the following are recommended:
- Every week check that the filters are clean
- Every two weeks clean the filters with a vacuum cleaner
- Every month wash the filters with soapy water
- Every 6 months replace the filters
It is clear that the recommended times are purely indicative, and
in some cases it may be necessary to increase the frequency of
the checks and maintenance operations.
These operations must be carried out with the unit off and after
having made sure that the appliance is disconnected from the
power supply.
Checking and cleaning the drains
All the water drains (humidifier and condensate) must ensure
perfect drainage, to avoid flooding in the room.
When the humidifiers drain the water, they discharge a quantity
of lime scale that depends on the hardness of the supply water.
This lime scale may accumulate in the bottom of the drain hose
and block the flow of water.
If cleaning is required, add ordinary descaler to the section of circuit involved.
This operation must be carried out with the unit off and after
having made sure that the appliance is disconnected from the
power supply.
44
EN
ACCURATE 2.0 AC - AB
DISMANTLING
IMPORTANT INFORMATIONS FOR CORRECT DISMANTLING OF THE UNIT
ACCORDING TO CE 2002/96/CE
If the unit has to be dismantled, this operation must be done by
suitable local authority. The correct dismantling avoids any negative enviromental consequences and allows significant benefits in
terms of energy saving and resource.
TROUBLESHOOTING
Troubleshooting is simplified by the information provided by the
microprocessor controller: if an alarm is signalled, refer to the
control panel instruction manual.
FAULT
THE AIR-CONDITIONER
DOESN'T START
ROOM TEMPERATURE
TOO HIGH
ACCURATE 2.0 AC - AB
If required, contact the nearest service centre, indicating the
probable causes of the fault.
CAUSE
SOLUTION
The electrical panel is not powered
Check for voltage; close the main switch.
The auxiliary circuits are not powered
Check that the cutout IM in the auxiliary circuits is armed.
Check the fuse on the main board.
The control panel does not start the
air-conditioner.
Check for DC power.
The parameter settings on the microprocessor
controller are not correct.
See the controller manual.
The air flow-rate is too low or null.
See “LOW OR NO AIR FLOW”.
The probe isn't working.
Check the electrical connections and
the configuration of the controller.
Thermal load higher than expected.
Check the thermal load in the room being
air-conditioned.
Three-way valve not working.
Check the electrical connections to the valve
servomotor. Open the valve using the manual
control knob.
No flow of chilled water.
Check the electrical connections to the valve
servomotor.
Open the valve using the manual control knob.
High temperature of the chilled water.
Check the operation of the water chiller.
EN
45
FAULT
ROOM TEMPERATURE
TOO LOW
CAUSE
The parameter settings on the
microprocessor controller are not correct.
The power of the heaters is not sufficient or
the heaters aren't working.
The hot water coil isn't working correctly.
AMBIENT HUMIDITY
TOO HIGH
Check the flow-rate and the temperature of
the water hot.
Check the operation of the control valve and
the servomotor.
The parameter settings on the
microprocessor controller are not correct.
See the controller manual.
Check and calculate the latent load; check the
flow-rate and the conditions of the outside air;
check the inflow of outside air.
The control system isn't working.
See the controller manual; check the operation of the panel and/or the probe.
The chilled water is not cold enough to
dehumidify (energy saving and twin cool units)
Lower the chilled water temperature until
there is condensation on the surface of the
coil
The parameter settings on the microprocessor
controller are not correct.
Check the room temperature setting (see the
control panel manual).
Latent load lower than expected.
Check and calculate the latent load.
The control system isn't working.
EN
Check that the heater thermal cutout is armed.
Check the power supply to the electric heaters.
If the heater safety thermostat is activated,
resolve the causes and reset the alarm.
Close the valve using the manual control knob
and replace the servomotor.
The humidifier isn't working.
46
See the controller manual.
The three-way valve in the chilled water
circuit is stuck in the open position.
Latent load higher than expected
AMBIENT HUMIDITY
TOO LOW
SOLUTION
Check the pressure of the supply water;
Check the operation of the manual control
system and the steam production unit (see the
control panel manual)
See the control panel manual; check the
operation of the panel and/or the probe.
ACCURATE 2.0 AC - AB
FAULT
LOW OR NO AIR
FLOW
CAUSE
The fans are not powered.
The filters are blocked (possible activation of
the dirty filter alarm).
ACCURATE 2.0 AC - AB
Check the power supply to the fans.
Clean the filter using a vacuum cleaner after
having shaken off the larger particles of dust.
Replace the filter if excessively clogged.
Check the correct calibration of the dirty filter
differential pressure switch F4.
The direction of rotation of the fans is reversed.
Reverse the phases of the power supply and
check that the direction of rotation is correct.
Obstructions to the air flow.
Check
The fan thermal cutout has tripped.
Check the resistance of the fan windings; after
resetting, measure the voltage and power
input.
Excessive pressure drop in the air distribution
system.
HEATER SAFETY
THERMOSTAT
ACTIVATED
SOLUTION
Check the sizing and the correctness of the air
distribution system (ducting, false-ceiling,
underfloor plenum, grills)
Insufficient air flow-rate
See “LOW OR NO AIR FLOW”.
Thermostat connection wire cut or broken
Check the continuity of the connection from
the safety thermostat to the control system.
Faulty thermostat
Replace the heater safety thermostat.
EN
47
Climaveneta S.p.A.
COD. C01002648H_V1_00
Via Sarson 57/c
36061 Bassano del Grappa (VI)
Italy
Tel +39 0424 509 500
Fax +39 0424 509 509
[email protected]
www.climaveneta.com
Climaveneta France
3, Village d’Entreprises
ZA de la Couronne des Prés
Avenue de la Mauldre
78680 Epône
France
Tel +33 (0) 1 30 95 19 19
Fax +33 (0) 1 30 95 18 18
[email protected]
www.climaveneta.fr
Climaveneta Deutschland GmbH
Lyrenstraße 13
44866 Bochum
Germany
Tel +49 2327-95428-0
Fax +49 2327-95428-99
[email protected]
www.climaveneta.de
Climaveneta España - Top Clima
Londres 67, 1 4
08036 Barcelona
Spain
Tel +34 934 195 600
Fax +34 934 195 602
[email protected]
www.climaveneta.com
Climaveneta Chat Union
Refrig. Equipment Co Ltd
88 Bai Yun Rd, Pudong Xinghuo
New dev. zone 201419 Shanghai
China
Tel 008 621 575 055 66
Fax 008 621 575 057 97
Climaveneta Polska Sp. z o.o.
Ul. Sienkiewicza 13A,
05-120 Legionowo,
Poland
Tel +48 22 766 34 55-57
Fax +48 22 784 39 09
[email protected]
www.climaveneta.pl
Climaveneta Climate Technologies (P) Ltd
#3487, 14th Main, HAL 2nd stage,
Indiranagar, Bangalore 560008
India
Tel:+91-80-42466900 - 949,
Fax: +91-80-25203540
[email protected]
Climaveneta Powermaster Ltd.
Unit 6, St Clare Business Park
Holly Road - Hampton Hill
Middlesex - TW12 1PZ
U.K.
Tel: +44 (0) 20 8783 1008
Fax: +44 (0) 20 8783 1009
[email protected]
www.climaveneta.co.uk
www.climaveneta.com
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