Carel k.Air, Руководство пользователя, Страница: 7 / 192

7
Introduction k.air +030220981 rel. 1.2 - 01.12.2020
k.Air is a pre-programmed controller for air conditioning and ventilation units.
k.Air ensures simple commissioning, application fl exibility, advanced connectivity and usability, thanks to the following features:
• preloaded confi gurations of air handling units, confi guration tool or manual procedure;
• modular concept for the management of additional confi gurations by coupling together c.pCOe expansion modules via a
built-in serial card;
• management of high-effi ciency direct expansion units
• application of energy saving and adiabatic humidifi cation management algorithms;
• advanced connectivity, thanks to three serial ports and an Ethernet port, certifi ed Bacnet protocol and remote control via
tERA.
• integrated web server interface.
k.Air is available in two sizes: mini P/N P+DA00FHD*FK and large P/N P+5A00SFC*LK. Both models share the same software
functions, however they diff er in terms of the number and characteristics of the available inputs/outputs and serial communi-
cation ports.
The number of inputs/outputs can be expanded using up to 4 c.pCOe expansion modules.
30220980_001_R01
Fig. 1.a
It is possible to connect CAREL temperature and humidity probes, active diff erential pressure probes, fl ow switches and ther-
mostats, with control functions or to signal alarms in the event of a fault.
The application off ers numerous pre- set basic unit confi gurations (I/O map and related associated functions); if the unit being
confi gured deviates from these models (e.g. if the devices are connected to a diff erent input/output or the unit has other devices
and functions), the software can be reconfi gured on the PGDE display or using the confi guration tool.
1.1 Main features
Summary of main functions:
• parameter setting by level, user, installer or manufacturer, with password-protected access;
• temperature control with diff erent set points based on the operating mode (Economy, PreComfort, Comfort and/or cooling
or heating);
• set point compensation with outside temperature probe;
• selection of daily time bands with corresponding operating mode;
• holiday and special day function;
• cascade control of heating/cooling devices in order to maximise energy savings (up to 6 devices);
• dehumidifi cation by cooling coil (with dew point control) and reheating;
• control with 0- 10 V input for humidifi er or Modbus connection for CAREL humiSonic and humifog humidifi ers;
• “freecooling” and “freeheating” based on the temperature;
• heat recovery with cross-fl ow or thermal wheel;
• air quality control with CO2 probe;
• safety functions for frost protection, no air fl ow, humidifi er alarm, etc.;
• heat recovery defrost from digital input;
• independent auxiliary control loop, with PI control algorithm and control probe;
• confi guration wizard;
• confi guration of inputs/outputs from PGDE terminal with free mapping on the main board, expansions and serial probes;
• input/output test to verify correct wiring during installation;
• manual mode to manually control each device during normal operation.
• Two- circuit direct expansion units with On/Off and/or BLDC compressors using the main board and unipolar driver (k.water
mini) or via serial connection to uChiller.
• Customisable maintenance plan based on VDI 6022-1.
1. INTRODUCTION