10
11 - "ECH" ELECTRONIC CONTROL
• Microprocessor control module, including:
-
chilled water temperature control (water inlet),
- control of operating parameters,
-
self-adapting algorithm for water volume reduction,
- circulating pump control (frost protection and anti-sticking function),
- dynamic setpoints are possible according to the outside temperature (to be activated at the time of installation by means
of special parameterization).
- anti-short cycle system,
- hour counter compressor and circulating pump,
- alarm management,
- anti-freeze security (temperature probes at water exchanger outlet),
- digital display of:
.
water temperature,
. set-point,
.
alarm code (HP, LP, water output, probes, anti-freeze...).
- remote alarm reporting is possible via a potential-free contact,
-
integrated condensation pressure control (with pressure sensors),
- remote control with display unit (accessory),
- serial communications port (RS 485 interface, accessory) - MODBUS Protocol.
12 - INSTALLATION INFORMATION
• See details in the installation manual.
12.1 - INSTALLATION
• Protection index of the unit:
- IP 24 : for the electrical equipment,
(IPXXB : for the mechanical hazards).
• Before installation, verify the following points:
- the unit must be installed outside in an appropriate location and in compliance with environmental requirements (sound
level, integration, etc...),
- the water chiller’s installation location must be perfectly level and strong enough to support the weight of the unit and
must have adequate inundation protection,
- sufficient space around the unit should be provided in order to facilitate servicing and maintenance operations,
- air suction to the coil and fan discharge must not be obstructed,
- install the unit above the region’s average snowfall level,
- vibrations and noise must not be transmitted to adjacent buildings,
- install the machine on anti-vibration pads and fit hoses on piping elements, as required,
-
if necessary, consult an acoustics specialist concerning the unit’s optimum location,
-
4 holes Ø 22.5 enable to place hoisting hooks and lift the unit.
12.2 - ELECTRICAL CONNECTIONS
•
All required information is indicated on the electrical diagram provided with the unit and in the installation manual.
• Connections are to be made in compliance with the standard code of practice and as per the standards in force at the site
of installation.
12.3 - HYDRAULIC CONNECTIONS
• The hydraulic connections are to be made in compliance with the standard code of practice.
•
IMPERA
TIVE:
Install the filter supplied on the water inlet of the unit.
12.4 - STARTING - MAINTENANCE
•
Refer to the installation guide and the maintenance manual.
•
IMPORT
ANT
:
-
The unit's electronic control features a frost protection device that automatically starts the water circulating pump
depending on the outside temperature (adjustable threshold), even if the unit is turned off.
- In the event the unit may be taken out of service or in the case of a high risk of freezing:
- either drain the installation,
-
or add glycol to the circuit.
- Tank anti-freeze resistance:
its electrical power supply and control must be separate from those of the unit.
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