2
EN
CONTENTS
Before starting the unit,
read the instruction manual carefully
.
Warning!
Especially important and/or hazardous operations.
Operations that can be carried out by the user.
Operations that
must only
be carried out
by an installer or authorised technician
.
Fundamental safety rules
3
Using and keeping the manual
3
Scope 4
Unit identification
4
Constructional characteristics
5
Accessories 6
Controls 8
Air flow-rate management
10
Technical data
11
Weights and dimensions
15
General information on receiving the unit
15
General warnings
16
Operating limits
18
Disposal 18
Technical specifications
19
Installation
22
Mechanical installation
24
Water connections
27
Water-side pressure drop
31
Electrical connections
33
Electric coil
34
Installation with valves supplied by the installer
35
Wiring diagrams
36
Accessories 54
General installation instructions and maintenance plan
61
Cleaning, maintenance, spare parts
66
Troubleshooting 66
Maintenance 66
Faults and solutions
67
Declaration of conformity
68
Summary of Contents for a-CXW 1102
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