Table of Contents
Advertisement
Description of the components
1. Fans. These are the helical type with scythe-
shaped vanes to increase efficiency and reduce
the sound emissions. The fans are directly
coupled to the threephase motor by means of an
external rotor. Thermal protection against opera-
ting faults is installed inside the winding.
2. Electric control and monitoring panel. It is
housed in a cabinet made of adequately thick
painted sheet metal suitable for outdoor installa-
tion (protection degree IP 54). The panel com-
prises the following main components:
• Main door-locking circuit-breaker.
•
Disconnectable fuse holders with protection
fuses for each compressor.
• Disconnectable fuse holders with protection
fuses for the oil heaters of the compressors.
• Disconnectable fuse holders with protection
fuses for the antifreeze heater.
• Control contactor for each compressor.
• Disconnectable fuse holders with fan protection
fuses.
• Fan control contactors.
• Magnetothermic relay/s and contactor/s for the
pump/s (if one of the pumping module accessories is installed and depending on the type chosen).
• Fan speed control board.
• Insulating and safety transformer to power the auxiliaries, protected with fuses.
• Basic monitoring board with microprocessor:
the main functions of the monitoring board are: temperature regulation of the water produced by the unit, defrosting con-
trol, operating hour counting for compressors and pump, balancing of operating hours for compressors, start-up timing, param-
eter entry digitized via the keyboard, alarm diagnosis.
Functions associated with the digital inputs: high and low pressure, high temperature of compressor outlet (accessory),
correct electric power phase presence-sequence, thermal protection for compressors, thermal protection for fans, thermal pro-
tection for pump, differential water pressure switch, ON/OFF and operating mode change commands.
Functions associated with the digital outputs: compressor control, water pump control, electric antifreeze heater, general
alarm (can be remote controlled), cycle reversing valve control.
Functions associated with the analog inputs: water inlet and outlet temperatures, circuit 1 and 2 coil temperatures.
Functions associated with the analog outputs: monitoring of the fan
speed by steps in conjunction with the fan control board.
3.User interfacing terminal with display.
• On-off key.
• Operating mode selector key.
• Compressor on-off LED.
• Antifreeze heaters on LED.
• Check-control with alarm code display.
• Defrosting in progress indicator.
GENERAL SPECIFICATIONS
1
2
3
4
1 2
3 4
5
Advertisement
Table of Contents
