3
Contents
GENERAL INSTRUCTIONS
4
Information contained in the manual
4
Symbols
4
Storage
4
Storage after use
4
Disposal
4
Disposal of the machine
4
SAFETY
6
General Instructions
6
Warning for lifting and transportation
6
Warnings for installation
6
Intended use
6
Warnings for use
6
Safety during maintenance work
6
INTRODUCTION
7
Presentation of the system
7
DIRECT EXPANSION UNIT – AIR COOLED
10
Technical characteristics
10
DIRECT EXPANSION UNIT - WATER COOLED
10
Technical characteristics
10
DIRECT EXPANSION UNIT – AIR COOLED
11
Technical characteristics
11
DIRECT EXPANSION UNIT - WATER COOLED
11
Technical characteristics
11
Operating description
12
Name and description of the principle components
13
Checks to be made on delivery
16
Unloading the unit
16
Characteristics of the installation area
16
Positioning of the unit
16
Opening and removal of the front panel
17
Electrical connections
18
Internal protection panels
18
Connection to the drains
19
Refrigerant connections on air cooled units
20
Type of oil recommended with COPELAND compressors
22
ype of oil recommended with DANFOSS-MANEUROP
compressors
22
Connection for water cooled units
22
MANUAL START UP AND SHUT DOWN OF THE UNIT 23
SETTING AND ADJUSTMENT
24
Selecting the power supply of the fans
24
Setting the regulation and safety devices
27
Setting the pressostatic valve (optional on chilled water
cooled models only)
27
Setting the air flow sensor
27
Setting the dirty filter sensors
27
MAINTANENCE
28
Three-monthly checks
28
Controlli semestrali
28
Six-monthly checks
28
Annual checks
28
Checks to be performed every sixty months
28
Cleaning and repalcing the filters
28
Troubleshooting
29
CHILLED WATER UNIT – CENTRIFUGAL FANS
33
Technical characteristics
33
UNITA’ AD ACQUA REFRIGERATA - VENTILATORI
RADIALI CON TECNOLOGIA E.C.
34
Technical characteristics
34
Operating description
35
Name and description of the principle components
36
Checks to be made on delivery
38
Unloading the unit
38
Characteristics of the installation area
38
Positioning of the unit
38
Internal protection panels
40
Electrical connections
40
Connection to the water drain
41
Hydraulic connections
42
Filling the hydraulic circuit
42
Filling the primary circuit
42
Filling the hydraulic circuits of the conditioners
42
MANUAL START UP AND SHUT DOWN OF THE UNIT 43
SETTING AND ADJUSTMENT
43
Selecting the power supply of the fans
43
Setting the regulation and safety devices
46
Setting the air flow sensor
47
Setting the dirty filter sensors
47
MAINTENANCE
47
Three-monthly checks
47
Six-monthly checks
47
Annual checks
47
Cleaning and repalcing the filters
48
Servomotor and chilled water valve
48
Servomotor and hot water valve
48
Troubleshooting
49
ACCESSORIES
51
Humidifier
51
Operating principle
52
Feed water
52
Connections
52
Maintenance
53
Electric heaters
54
Temperature and humidity sensor
55
Connection to fresh air intake
56
Maintenance
56
Discharge temperature threshold sensor (only on
CHILLED WATER models)
57
