English 05/09
ACCURATE AX - AW - AD - AT - AF
3
INDEX
Documents
4
Direct expansion unit configuration
4
General characteristics
6
Air flows
10
Rating plate
11
Technical data
11
Hot water re-heating
16
Accessing the main components
17
Transport and handling
18
Dimensions and weight
19
Positioning the air-conditioner
23
Operating space
23
Operating limits
24
Optional base moulding
24
Air distribution, under units
25
Intake plenum, under versions
25
Intake plenum, under versions
25
Motor-driven damper, over/under units
26
Front outlet plenum
26
Front outlet moulding
26
Optinal air filter
27
Optional Fresh air
27
Position and diameter of the water connections
28
Water connections
32
Connection to brazed plate condenser
AW-AT-AF
32
Correction factors
32
Air condenser: suggested installation
36
Refrigerant connections
37
Oil separator
38
Volume
39
Condensate drain
40
Electrical connections
40
Minimum cross-sections of the power supply cables
41
Electrical specifications
41
Electrical connection of the outdoor air-cooled
condenser BRC and/or the outdoor dry cooler BDC
43
Fan speed regulator condensing control
43
Vaacum and charge
45
Operation and control
46
Centrifugal fans regulation (frame 1-2)
47
Tightening the drive belts
47
Instruments and alarms
48
Calibrating the control and safety devices
49
Calibrating the pressure control valve
50
Calibrating the air flow sensor
50
Calibrating the dirty filter sensor
50
Temperature and humidity probe
51
Servomotor and hot water valve
51
Electric heaters
56
Humidifier
56
Humidifier power supply
58
Humidifier and condensate drain
58
Condensate drain pump and humidifier drain pumpe
58
Maintenance
59
Dismantling
60
Troubleshooting 61
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In some parts of this manual, the following symbols are used:
WARNING =
for actions that require special
care and suitable preparation
PROHIBITED =
for actions that absolutely
MUST NOT be performed
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The following symbols are used in this publication and inside the unit:
User
Installer
Assistance
Important
Prohibition
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).
