EN/07.2013/58/6
1. Introduction
The object of this manual is a microprocessor controller for air conditioners used in Telecommunication area.
C2020 controller manages all main functions of air conditioning units with two basic purposes:
• Temperature control with cooling and heating. The cooling mode can be obtained either by the compressor
operating in a single refrigerant circuit or by introducing external air in free cooling mode. Heating requires the
activation of electrical heaters.
• Humidity control can be obtained either by enabling dehumidification mode or with the humidifier operation.
C2020 controller can control 1 refrigerating circuit and can be combined with two different versions of operator interface:
• User interface with 3-digit display to allow the change of parameters, such as: cooling set point, cooling band, etc.
• Service interface with 4 x 20 display to access all parameters and functions of the controller, used for commissioning
and servicing the air conditioner.
C2020 can control up to 3 DC evaporator fans, subject to parallel control. This means that fans will be controlled by the
same output, while each fan sends a speed indicating feedback signal towards the board (board input).
Up to five C2020 controllers can be connected in a LAN for sequencing, back-up and capacity management.
IMPORTANT NOTE: software functions and parameters described in this manual are generally valid for the
software version, which is designed to control units of different product families and configurations. Therefore,
unit features cannot be automatically inferred from software described in this manual. Features of a particular
product family are only the ones described on its specific manual.
Information in this manual refers to software version STUTL210.
2. Hardware features
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