
HYDRONIC UNIT
4
CONTENTS
GENERAL
General warnings................................................................................................................................................................. 6
Basic safety rules................................................................................................................................................................. 7
Description .......................................................................................................................................................................... 8
Identification ........................................................................................................................................................................ 8
Technical Data ................................................................................................................................................................... 10
Operating conditions ......................................................................................................................................................... 12
Overall dimensions ........................................................................................................................................................... 13
Wiring diagrams ................................................................................................................................................................ 14
Refrigerating circuit diagram .............................................................................................................................................. 21
INSTALLER
Product delivery................................................................................................................................................................. 22
Handling and transport...................................................................................................................................................... 22
Access to inner parts......................................................................................................................................................... 22
Installation ......................................................................................................................................................................... 23
Hydraulic connections ....................................................................................................................................................... 24
Condensate discharge connection .................................................................................................................................... 27
Electrical wiring.................................................................................................................................................................. 27
Control panel..................................................................................................................................................................... 31
Charging the system.......................................................................................................................................................... 32
TECHNICAL ASSISTANCE CENTRE
First commissioning........................................................................................................................................................... 34
Switching off for lengthy periods........................................................................................................................................ 34
System drainage................................................................................................................................................................ 35
Routine maintenance......................................................................................................................................................... 35
Extraordinary maintenance ................................................................................................................................................ 36
COMMAND
Control panel..................................................................................................................................................................... 38
Functions .......................................................................................................................................................................... 40
FAULTS
Fault signal ........................................................................................................................................................................ 49
Table of factory parameters and functions ......................................................................................................................... 52
In some parts of the booklet, various symbols are used:
WARNING = for actions requiring special care and adequate preparation
DO NOT = for actions that SHOULD ON NO ACCOUNT be carried out