Carel k.Air User Manual

Air handling unit controller

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User manual (260 pages)

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USER MANUAL

k.Air

Air handling unit controller

k.Air

+030220981 - ENG

Up to date version available on

www.carel.com

NO POWER

& SIGNAL

CABLES

TOGETHER

READ CAREFULLY IN THE TEXT!

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Summary of Contents for Carel k.Air

Page 1 Air handling unit controller USER MANUAL NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT! k.Air +030220981 - ENG Up to date version available on www.carel.com...
Page 3 The technical specifi cations shown in the manual may be changed without conditions of the fi nal installation. prior warning. The liability of CAREL in relation to its products is specifi ed in the CAREL general contract conditions, available on the website www.carel.
Page 5 1.1 Main features .......................7 9.1 Dampers ......................49 1.2 Map of points and functional diagram ..........8 9.2 Activation ......................50 1.3 Series of accessories for k.Air ..............10 9.3 Shutdown ......................52 9.4 Types of control ....................54 2. Communication ports ..........13 9.5 PID control ......................
Page 7 • 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.
Page 8 Auxiliary loop 4 input Reheat coil pump 1 Heat recovery unit defrost Reheat coil pump 2 Sanifi cation alarm Filter alarm On/off heat recovery unit IEC humidifi er Sanifi cation device Tab. 1.a k.air +030220981 rel. 1.2 - 01.12.2020 Introduction...
Page 9 Fig. 1.c Addr. Modbus Devices Addr. Modbus Devices Supply Fan Humisonic Return fan 6..7 Humifog 1...4 c.PCOe 128…137 Serial Probe μChiller Th-Tune Power+ Tab. 1.b boss pGDx pGNE serial probe serial probe Fig. 1.d k.air +030220981 rel. 1.2 - 01.12.2020 Introduction...
Page 10 Series of accessories for k.Air Below is a list of devices that are suitable for use with k.Air. CAREL has passive and active temperature probes and diff erential pressure probes, for duct installation, designed specifi cally for heat recovery units and small air handling units.
Page 11 The pGDx terminal can be used to fully browse the k.Air webserver, thus acting as a unit terminal. In the version with built-in T/H pro- be, it can be used as a room terminal, getting the temperature and humidity values directly from the main controller.
Page 12 DC compressors, guaranteeing greater compressor protection and reliability and high unit effi ciency. CAREL’s “APPLICA” app, available on Google Play for the Android operating system, makes it easier to confi gure parameters and commission the unit. Operation of μChiller is descri- bed in the user manual +0300053EN.
Page 13 2. COMMUNICATION PORTS See the c.pCO manual +0300057EN for the hardware characteristics of the serial ports. The k.Air controller manages the proto- cols on the serial ports shown in the table. Ref. Type/connectors Model Specifi cations Protocol J3 Disp. k.Air mini •...
Page 14 Assembly and dimensions – mm (in) The k.Air controllers are available in the DIN rail mounting version. See the technical documentation +0300057EN. The th- Tune terminal is available in the fl ush- mounted and wall- mounted versions. For assembly, see the techni- cal leafl ets +0500016IE, +0500017IE.
Page 15 ID: digital inputs with voltage A (*) Built-in display and keypad Type: digital inputs with voltage-free contacts μSD Slot ID..: digital inputs with voltage A (*) IDH..: digital inputs with voltage B (**) Optional BMS card Tab. 3.a k.air +030220981 rel. 1.2 - 01.12.2020 Hardware installation...
Page 16 • reduce the path of probe cables as much as possible, and avoid spiral paths that enclose power devices; • in the event of any malfunctions, do not attempt to repair the device, rather contact a CAREL service centre. Electrical installation Important: before carrying out any maintenance, disconnect the controller from the power supply by moving the main system switch to “off ”.
Page 17 : for connection cable lengths > 50 m or to connect multiple terminals, use the TCONN6J000 accessory. See manual +0300057EN. L < 50 m cavo telefonico telephone cable k.Air large Tx/Rx J11 pLAN pGD1 Fig. 3.j k.air +030220981 rel. 1.2 - 01.12.2020 Hardware installation...
Page 18 (*)Excluding DP**Q and DP****2 probes Note: the table indicates the maximum number of inputs that can be connected. For example, with k.Air mini, a maximum of two 4- 20 mA inputs from probes powered by the controller and a maximum of four 4-20 mA inputs probes powered externally can be connected.
Page 19 For the operating range, see the probe data sheets. The controller can be connected to all CAREL DP* series active temperature and humidity probes confi gured with 4-20 mA signal.
Page 20 Maximum number of analogue outputs that can be connected Analogue outputs (not opto-isolated) k.Air mini k.Air large c.pCOe 0-10 Vdc (class 2) (maximum current 2 mA) max. 5 max. 5 Tab. 3.i k.air +030220981 rel. 1.2 - 01.12.2020 Hardware installation...
Page 21 Vterm k.Air large: 24 Vdc ± 10% - To be used to power an external terminal as an alternative to the one connected to J10, Pmax = 1.5 W. Max connection cable length: 30 m; if the length exceeds 10 m, use a shielded cable with the shield connected to earth.
Page 22 Correct operation is not guaranteed if actuators with voltage inputs are connected; • for k.Air large, power analogue outputs VG-VG0 at the same voltage supplied at G-G0: connect G to VG and G0 to VG0. This applies to both AC and DC power supplies.
Page 23 NO output relay Tab. 3.p The following tables apply in relation to the type of insulation. Insulation type on k.Air mini andc.pCOe Between relays in group 1 (R1, R2) and 2 (R3, R4, R5) basic Between relays in group 3 (R6) and relays in group 1 and 2 reinforced Tab.
Page 24 +0500059IE. The k.Air controller is designed to be able to host up to four c.pCOe cards with serial addresses from 2 to 5; to assign the serial address to the c.pCOe card, the dipswitches on the card must be set as shown in the fi gure; the “Ext” dipswitch must be set to “OFF”...
Page 25 4. USER INTERFACE Introduction The k.Air system uses the user terminal (P/N PGNE000*) for displaying alarms and some key values, and for setting the parame- ters. The terminal comprises a display and 6- button keypad for confi guring and programming the unit. The main information can also be displayed on the pGDX graphic terminal.
Page 26 The parameters can be set on the user terminal. Access to the parameters depends on the level: User (password = 0000), Service (password = 1234) and Manufacturer (password = 5678). Press Prg to access the main menu. 1/14 Z. Wizard A. Unit B. Fans Fig. 4.d k.air +030220981 rel. 1.2 - 01.12.2020 User interface...
Page 27 4-8. Note: the parameters that can be set are shown on the display in UPPER CASE. EXAMPLE: setting the current date/time k.air +030220981 rel. 1.2 - 01.12.2020 User interface...
Page 28 Dampers status: Req: Act: Status: Recovery Fresh: Close Recovery Freecooling Freeheating Defrost Bypassed Damper status based on opening time Bypass damper status and request, unit status. Outside air, mixing and exhaust damper status k.air +030220981 rel. 1.2 - 01.12.2020 User interface...
Page 29 Scheduler active: daily programming, holiday Unit status: COMFORT program or special days. Daily: The next two screens show information on the software ver- Vacation: sion and operating system, the size of the k.Air controller and Special day: the cycle time. ECONOMY PRE-COMFORT COMFORT On/Off...
Page 30 Fig. 5.b Note: see technical leafl ets +0500016IE/+ 0500017IE for assembly of the terminal. Once connected to the k.Air controller and enabled, th- Tune allows the user to control the room temperature and relative humi- dity ( NOTE: the room humidity set point can however only be set on the pGDE terminal) and change some settings, such as operating mode and time bands.
Page 31 Long press (3 s, after disabling the time bands): access the clock/time band setting menu. Use the knob to select the following options: • CLOCK: set the current date/time IMPORTANT: the setting has NO eff ect, the reference time is set on k.Air/pGDE; • TIMEBAND: set •...
Page 32 Setting the time bands See the paragraph at the end of the chapter. The time bands set on the th- Tune terminal are only eff ective when the k.Air controller is in Comfort mode. In Economy mode, the unit set point depends on the set point confi gured on the corresponding screen on the controller.
Page 33 The resulting room temperature set point is shown in the fi gure, where it can be seen that the th-Tune set point is only consi- dered when the pGDE is in “Comfort” mode. k.air +030220981 rel. 1.2 - 01.12.2020 th-Tune (accessory)
Page 34 3. supply probe reading; 4. outside probe reading. After 10 s the terminal returns to the standard display. Note: the set point will be correctly displayed after selecting the main control probe (Ac18) k.air +030220981 rel. 1.2 - 01.12.2020 th-Tune (accessory)
Page 35 With th-Tune installed, the unit set point is the combination of: • Main scheduler on k.air • th-Tune scheduler (active only if the k.air scheduler is not active or it is in Comfort mode) • Change set point using the control knob.
Page 36 6. Press the knob: the icon for the fi rst can be selected: time band fl ashes – Monday to Sunday (Mon, .., Sun); – Monday to Friday (Mon, ..., Fri); – Saturday and Sunday (Sat, Sun); – every day (Mon/Tue/.../Sun). k.air +030220981 rel. 1.2 - 01.12.2020 th-Tune (accessory)
Page 37 16. Press the knob (ESC) or the Power button one or more times to go back to the stan- dard display. Press Clock to activate the time bands (the home icon is displayed). k.air +030220981 rel. 1.2 - 01.12.2020 th-Tune (accessory)
Page 38 If needing to use the temperature and humidity probes included in the pGDx terminal: • go to screen Y065 and enter the last 4 digits of the MAC Address. In this way, k.air will acquire the values read by the tem- perature and humidity probe, which can be assigned as a room temperature and humidity probe for the space where the terminal is located.
Page 39 The pGDX terminal is now ready to display the pages from the k.air web server, presenting the main information on the control- ler intuitively and graphically. It can also be used to set the User and Service parameters. The main rule for navigating the pages and setting the parameters is that the clickable areas are identifi ed by white icons and texts.
Page 40 BLDC c. Power+ V. EXV W. In/Out a. Status b. Confi guration X. Settings a. Date/time b. Language c. Unit of measure d. Pwd change e. Initialization Y. Connectivity Z. Logout k.air +030220981 rel. 1.2 - 01.12.2020 Menu description...
Page 41 • Heat recovery unit: PID parameters, activation thresholds, defrost parameters; • Modulating bypass damper: minimum and maximum limits, operating hours; • Humidifi er: type (modulating or CAREL humiSonic controlled via serial), set operating hours before alarm; • Enable humidifi cation control, PID parameters;...
Page 42 (heater/water coil) and the type (ON/OFF, modulating); • select the type of heat exchanger (plate/rotary), outside air damper and bypass damper; • select the type of humidifi er (modulating/humiSonic/Humifog). k.air +030220981 rel. 1.2 - 01.12.2020 Menu description...
Page 43 • all of the controller’s inputs are connected correctly. k.Air must be commissioned from the pGDE user terminal. Note: k.Air is factory set for correct display on a pGDE terminal with address 32 in the pLAN network (default); for more details on using the terminal, see manual +0300057EN.
Page 44 Upload confi guration from USB pen drive All k.Air models are equipped with a USB or micro USB host (Master) port that a USB mass storage device can be plugged into (typically a USB pen drive or portable hard disk) so as to load a custom confi guration.
Page 45 Unit of measure The k.Air controller is confi gured to display International System units of measure. Access screen Wc01 to set a diff erent unit of measure, if desired. The options are international system (Int), Imperial (UK) and other systems used in the United States (USA) and Canada (CAN).
Page 46 Reset all counters Tab. 8.r FieldBus serial port confi guration The k.Air software manages the devices that communicate via the FieldBus (mini model) or Fieldbus2 (large model) serial network using the Modbus protocol, with the following frame: • baud rate: 19200;...
Page 47 Important: when loading a confi guration, all of the parameters are set to the value saved in the fi le, and therefore any sub- sequent changes will be lost. Important: unplug any USB cables connected to the USB device port (k.Air large) before loading a confi guration. 8.10.1 Save/load to the controller’s internal memory...
Page 48 2. access screen Ac99; 3. select “Import”, “USB”; 4. type in the exact fi le name and confi rm; 5. a confi rmation message is shown to indicate that the operation was successful. k.air +030220981 rel. 1.2 - 01.12.2020 Commissioning...
Page 49 9. FUNCTIONS Dampers k.air manages up to six types of dampers, on/off or modulating, with the following specifi c control functions: Damper Relationship Control Fresh air Unit activation and main control functions Air quality Frost protection Exhaust Temperature control Mixing...
Page 50 Activation The k.air software enables the unit to be switched on only if all of the enabled commands are set to ON (from pGDE/thTune, BMS, digital input, scheduler). When the unit is switched on, a procedure is activated to verify all of the safety conditions and activate the devices following a certain sequence;...
Page 51 If the fl ow switch is activated during steady state operation, the behaviour is shown in the fi gure. Flow switch Flow switch Flow switch Retry nr. Number of attempts Alarm Delay at start-up Alarm Alarm Time Delay in steady state Fig. 9.d k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 52 Tab. 9.f Shutdown In the same way as when switching on, the k.Air software enables the unit to be switched off if at least one of the enabled commands is set to OFF (PGD1/th-Tune, BMS, DI, Scheduler). Once the command is received, the unit goes into shutdown status, during which the devices follow a specifi c sequence until the unit is completely switched OFF.
Page 53 Supply fan delay Supply fan = regulation request FLOW OK ? ALARM All retries have been attempted Warning: supply air ﬂow error ALARM All retries have been attempted SHUT DOWN STEADY STATE Fig. 9.e k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 54 (considered as the main set point) by adding/subtracting an off set, based on the deviation of the return/room probe values. See the chapter on Temperature control for more details. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 55 9.5.2 Sequential PID The k.Air controller has diff erent functions and devices that can act alone or in a coordinated way to ensure the best indoor comfort conditions. Each of these devices may either be present or absent, or enabled or disabled on the unit; therefore, de- pending on the situation, it will have a diff erent impact on energy consumption during operation.
Page 56 A, but according to the incremental PID algorithm, the second request also starts from zero, as if the curve for the second device were shifted to the right by the value of Diff _1. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 57 9.5.3 Incremental PID Incremental PID is the most common control mode on k.air. It is used for a single point control and is based on a PID controller designed to avoid variations in the output in the event of variations to the set point.
Page 58 Minimum supply set point Oﬀset max Supply setpoint 1/2 Supply set point 1/2 Minimum Room Supply set point RoomRet_T Room or return temperature set point RoomRet_Set Room or return set point Time Time Fig. 9.p k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 59 Tab. 9.m Cooling and heating The k.Air controller is extremely fl exible in adapting to the temperature control demands and characteristics of the system so as to respond to changes in season or over a day. The unit can operate (Ac22): •...
Page 60 R/W HR1313 AV2821 Ac28 Cooling/Heating coil water temperature cooling threshold 15.0 - 99.9 99.9 °C R/W HR1314 AV2822 Cooling/Heating coil water temperature heating threshold 25.0 - 99.9 99.9 °C R/W HR1315 AV2823 Tab. 9.o k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 61 Coils k.air can manage up to three coils, called preheating, main and reheating. Each of these has diff erent characteristics and requi- rements. The table below summarises the main features, while the details are described in the chapters corresponding to each control function.
Page 62 The anti-seize function, which involves forcing the pump on for 30 s, is activated after a fi xed time of one week of inactivity. A further option available is control of the coil supply water temperature. k.air activates an alarm on exceeding a high or low temperature threshold, after a settable delay.
Page 63 Direct expansion coil with integrated management This confi guration, available only on k.air mini, involves the installation of a refrigerant circuit using the inputs/outputs, unipolar expansion valve and communication with the Power+ inverter on the controller, so as to integrate direct expansion architecture with high effi ciency.
Page 64 The uChiller direct expansion architecture involves modular architecture, with the refrigerant circuit managed by an external uChiller controller, connected via the Fieldbus serial port available on k.air. This allows to the refrigeration unit to be expanded to include two circuits with two compressors each, either on/off or BLDC. Unlike integrated direct expansion management, the source heat exchanger is managed externally from the air handling unit, via a condensing/evaporation signal.
Page 65 9.10.4 BLDC compressor start-up procedure k.air manages the start-up of BLDC compressors in accordance with the manufacturer’s specifi cations: on starting, the com- pressor is brought to start-up speed and kept at that speed, irrespective of the control request, for the entire minimum on time;...
Page 66 1. Decrease the rate of capacity increase. 2. Reduce capacity High motor current prevention (zone 4) Device Description BLDC compressor 1. Decrease the rate of capacity increase. 2. Reduce capacity MOP with specifi c algorithm k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 67 Compressor delay at start-up/in operation Compressor start-up is a critical phase and for this reason k.air has diff erentiated control for some alarms to exceed the transient phase from compressor start- up and allow it to reach steady operation. The following alarms implement this feature: •...
Page 68 Carel’s Power+ and ExV system. uChiller can be easily integrated with k.air via the Fieldbus serial port to develop air handling units with a direct expansion main coil.
Page 69 4. Using the Applica or uChiller display app, confi gure the parameters relating to the refrigeration unit. 5. Set parameter Hd00 (supervisor address) to 10. 6. On the k.air pGDE terminal, enable the main coil as uChiller on screen Ac08, and set the operating mode on Da01. 7. k.air with uChiller direct expansion is now operational.
Page 70 For example, if set to 30%, it means when the fresh air damper is fully closed, IEC is limited by 30%. By default the parameter is set to 0%, i.e. the limit is disabled. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 71 Control can be performed using the relative humidity value or the absolute humidity value. To assist commissioning, the set point will still be the relative humidity value, and k.air will then calculate the equivalent in abso- lute humidity by taking into account the temperature set point; the result is shown on the info screen.
Page 72 Ac60. The eff ect is a progressive increase in heating device output, in heating mode (if present), and, subsequently, a reduction in humidifi er output, which is the only active stage in cooling mode. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 73 BV253 Tab. 9.ab Note: if CAREL humiSonic or Humifog humidifi ers are used, the humidifi er must be confi gured according to the commissio- ning procedure, as described in the specifi c manuals or technical leafl ets. 9.15 Dehumidifi cation Dehumidifi cation is controlled by a main cooling or mixed coil, when appropriately enabled (Ac04).
Page 74 RecT Return temperature ExtT Outside temperature Temperature Set point delta_fh Freeheating activation delta delta_fc delta_fc delta_fc Freecooling activation delta ExtT RetT ExtT RetT Fig. 9.af ON : RetT-ExtT> delta_fc ; OFF : RetT-ExtT<0 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 75 The controller adjusts the modulating fresh air damper (in sync with the mixing damper), and the bypass damper, if fi tted, is opened completely. Note: when the freecooling activation conditions are active, the heat recovery stage is disabled.. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 76 Ac01, is always available as a control stage in the main sequential temperature control PID. However, the freecooling/freehe- ating conditions must not be true at the same time, as these are mutually exclusive. k.air can manage the following types of heat recovery unit: Type...
Page 77 9.18 Fans k.air manages up to two fans, one for supply and one for return, which may be: • On/off ; • Modulating; • 3-speed modulating; • Modulating EBMpapst via Modbus; • Modulating Ziehlabegg via Modbus; The return fan is optional, and if enabled it will be the same type as the supply fan. The confi guration is available on screen Ac01 and subsequently in menu B.Fans.
Page 78 R/W HR1899 AV3379 Tab. 9.al 9.18.2 Flow and thermal overload alarm On k.air the following digital contacts can be enabled to check correct functioning of the fans • Supply fan thermal protector, total unit shutdown • Return fan thermal protector, fans stopped •...
Page 79 R/W CS249 BV249 (FALSE: minimum ventilation; TRUE: free cooling) Tab. 9.ao 9.18.5 Filters k.air can manage the following fi lters: • Supply fi lter 1 alarm • Supply fi lter 2 alarm • Return fi lter alarm • Filter alarm •...
Page 80 • If the fl ow- rate or static pressure set point is set to the maximum allowable value, air quality control will no longer have any eff ect on the fans, as there is no more margin for modulation. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 81 Auxiliary control can drive a system actuator or an actuator with direct eff ect on indoor comfort. In the latter case, the set point is made available via the quick menu on the main screen, after selecting “enable quick menu”. This allows the set point to be defi ned by the end user with unprotected access. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 82 The On/Off heater features “direct- heating” activation, with the trend shown in the fi gure, while for the modulating heater, the action depends on the PID parameters. Heating/direct Ext_pr diﬀ Heating/direct 100% Ext_pr Outside temperature probe Ext_pr Set point diﬀ Diff Diff erential Fig. 9.al k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 83 Sanifi cation device is always on when the unit is switched on. In case of unit off by supervisor or scheduler, sanifi cation device status can be set. k.air manages a digital input alarm for sanifi cation device. If it is activated, ventilation works in normal operation but unit switches to full fresh air (externa damper full open, mixing damper full closed).
Page 84 The frost prevention function aims to bring the unit back to normal control by reducing the supply of fresh outside air. Procedure: The fresh air and exhaust dampers start closing and the fans begin to decrease speed until reaching the condition for activating frost protection. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 85 50.0 100.0 R/W HR1664 AV3159 Db06 PreHeating coil request during antifreeze off status 50.0 100.0 R/W HR1673 AV3168 Dc06 PostHeating coil request during antifreeze off status 50.0 100.0 R/W HR1681 AV3176 Tab. 9.bc k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 86: Table Of Contents
(warm) and fresh air (cool). H_wheel_speed 100% H_wheel_speed Thermal wheel speed Byp_dmp_thr_max Bypass damper maximum opening threshold Ext_T Byp_dmp Byp_dmp Byp_dmp_thr_min Bypass damper minimum opening threshold thr_max thr_min Ext_T Outside temperature Fig. 9.ar k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 87: Byp_Dmp
The unit starts defrosting if these three conditions occur simultaneously: 1. unit in heating mode 2. compressor on 3. evaporation temperature (conversion from suction pressure) < start defrost threshold During defrosting, the fans operate at the speed set for “Defrost fan request”. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 88 • Post-dripping (D), phase in which the fans go to the speed set for “Fan request after post-dripping” (Ua07) so as to completely expel any water that is still on the coil. The post-dripping duration can be set, and once it ends the compressor starts again in normal heat pump operation. k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 89 100% H_wheel_speed Thermal wheel speed Byp_ dmp_ thr_ max Bypass damper maximum opening threshold Ext_T Byp_dmp Byp_dmp Byp_ dmp_ thr_ min Bypass damper minimum opening threshold thr_max thr_min Ext_T Outside temperature Fig. 9.ax k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 90 Fans request during evaporator defrost: post dripping 30.0 100.0 R/W HR1547 AV3048 Fans request during evaporator defrost: post dripping R/W HR1548 PIV3049 Ua33 Disable Low supply temperature alarm TRUE R/W CS250 BV250 Tab. 9.bf k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 91 9.26 Probe error management The k.Air controller software features specifi c device management and/or control functions in the event of probe errors. Normally, the device or function associated with a probe alarm is deactivated, so as to avoid control being based on inaccurate values, however in some special cases the devices can be managed by setting a fi xed percentage, so as to allow the unit to continue operating, albeit without guaranteeing optimal control.
Page 92 Unit setpoints - Room temperature - Cooling - Pre-comfort - High limit value 28.0 LowLimVal 100.0 °C R/W HR1108 AV2618 Unit setpoints - Room temperature - Heating - Pre-comfort - High limit value 23.0 LowLimVal 100.0 °C R/W HR1109 AV2619 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 93 Unit setpoints - Return static pressure - Comfort - High limit value 600.0 LowLimVal MaxVal_ RW Pa R/W HR1151 AV2661 Unit setpoints - Return static pressure - Comfort - High limit value 600.0 LowLimVal MaxVal_ RW Pa R/W HR1151 AV2661 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 94 Unit setpoints - Humidity - Cooling - Comfort - High limit value 60.0 LowLimVal 100.0 R/W HR1177 AV2687 Unit setpoints - Humidity - Heating - Comfort - High limit value 55.0 LowLimVal 100.0 R/W HR1178 AV2688 Tab. 9.bh k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 95 9.28 Time bands The time bands are managed by the k.air controller Scheduler function; this function features a weekly schedule, special days (up to 15) and vacations (up to 3). For each of these three groups, either a fi xed profi le (Off , Comfort, Precomfort, Economy) or a daily program chosen from four pre-settable confi gurations can be selected.
Page 96 02/01 Note: for the daily pro- Comfort Comfort grams, the time bands must be in chronological order, and Economy midnight (00:00), where neces- sary, must be the fi rst set band. Fig. 9.bb k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 97 Start month 2 R/W HR1235 PIV2743 End day 2 R/W HR1236 PIV2744 End month 2 R/W HR1237 PIV2745 Program R/W HR1238 PIV2746 Enable vacation 3 R/W CS208 BV208 Start day 3 R/W HR1239 PIV2747 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 98 Day 15 R/W HR1287 PIV2795 Month 15 R/W HR1288 PIV2796 Program R/W HR1289 PIV2797 Ab27 Enable Party mode from c.pCO FALSE 0 R/W CS224 BV224 Party mode duration 10080 R/W HR1291 PIV2799 Tab. 9.bi k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 99 9.29 VDI 6022-1 management k.air provides a function, based on the VDI 6022-1 standard, to improve system hygiene. Both operational and maintenance functions are provided. VDI management, enabled on screen Ac86, includes: 1. A specifi c menu used to fi nely calibrate the active control logic for scheduled maintenance.
Page 100 VDI Inactivity startup activation delay 65535 R/W HR1686 PIV3181 VDI Inactivity startup duration 65535 R/W HR1687 PIV3182 VDI high saturation humidity threshold 80.0 99.0 R/W HR1688 AV3183 VDI high saturation humidity diff erential 99.0 R/W HR1689 AV3184 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 101 Reset type (FALSE: Blocker Alarm; TRUE: Warning) TRUE R/W CS337 BV337 Enable of the VDI function TRUE R/W CS338 BV338 Month selection variable R/W HR1712 PIV3207 Reset type (FALSE: Blocker Alarm; TRUE: Warning) TRUE R/W CS339 BV339 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 102 Jb30 Countdown before the next inspection 65535 IR538 PIV3852 Reset timings after the inspection R/W CS373 BV373 Countdown before the next inspection 65535 IR539 PIV3853 Reset timings after the inspection R/W CS374 BV374 k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 103 Shared pGDX terminal The pGDX terminal can be shared in a network of 1 k.water and up to 10 k.air units. The webserver HMI can easily switch betwe- en the k.water and k.air controllers, meaning only one graphic terminal needs to be installed in the room. This is done following the commissioning procedure, see the paragraph below.
Page 104 Enable start-up or operating mode signal k.air and k.water can mutually send and receive signals to enable start- up and change the operating mode. This makes it easier to start the entire system and change operating mode using just one single command, chosen from among those available on the network.
Page 105 Netmask (XXX.xxx.xxx.xxx) IR558 PIV3872 Netmask (xxx.XXX..xxx.xxx) IR559 PIV3873 Netmask (xxx.xxx.XXX.xxx) IR560 PIV3874 Netmask (xxx.xxx.xxx.XXX) IR561 PIV3875 DNS (XXX.xxx.xxx.xxx) IR562 PIV3876 DNS (xxx.XXX..xxx.xxx) IR563 PIV3877 DNS (xxx.xxx.XXX.xxx) IR564 PIV3878 DNS (xxx.xxx.xxx.XXX) IR565 PIV3879 Tab. 9.bo k.air +030220981 rel. 1.2 - 01.12.2020 Functions...
Page 106 10. PARAMETER TABLE The k.Air controller can be programmed in three levels, with access to diff erent parameters based on the password entered (see the parameter table): 1. U = user (password=0000); 2. S = service (password=1234); 3. M = manufacturer (password=5678).
Page 107 Unit setpoints - Air quality - Comfort - Low limit value 600.0 MinVal_RW HiLimVal R/W HR1141 AV2651 Unit setpoints - Air quality - Comfort - High limit value 1000.0 LowLimVal MaxVal_ RW ppm R/W HR1142 AV2652 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 108 Start hours event 1 R/W HR1187 PIV2696 Start minutes event 1 R/W HR1188 PIV2697 0=OFF; 1=Economy; 2=Comfort R/W HR1189 PIV2698 Enable event 2 R/W CS197 BV197 Start hours event 2 R/W HR1190 PIV2699 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 109 R/W HR1245 PIV2753 Month 1 R/W HR1246 PIV2754 Program R/W HR1247 PIV2755 Enable special day 2 R/W CS210 BV210 Day 2 R/W HR1248 PIV2756 Month 2 R/W HR1249 PIV2757 Program R/W HR1250 PIV2758 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 110 IEC type (0: None; 1: OnOff ; 2: Modulating; 3: Humisonic) R/W HR1295 PIV2803 IEC: IO confi guration warning DI698 BV1156 DI699 BV1157 Ac08 PreHeating coil type R/W HR1296 PIV2804 Main coil type R/W HR1297 PIV2805 PostHeating coil type R/W HR1298 PIV2806 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 111 °C R/W HR1354 AV2862 Low supply temperature alarm delay time at start up 65535 R/W HR1355 PIV2863 Low supply temperature alarm delay time at unit in run mode 65535 R/W HR1356 PIV2864 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 112 Drive type (0: Internal public volume; 1: USB pendrive) R/W HR1015 PIV2537 HR1018 IV2539 HR1020 IV2540 HR1022 IV2541 HR1024 IV2542 HR1026 IV2543 HR1028 IV2544 HR1030 IV2545 HR1032 IV2546 HR1034 IV2547 HR1036 IV2548 HR1038 IV2549 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 113 IR401 PIV3770 Thermal wheel - Working hours threshold (1000hrs) R/W HR1403 PIV2911 Thermal wheel - Working hours left to the maintenance IR403 PIV3771 Thermal wheel - Working hours reset R/W HR1404 PIV2912 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 114 Pre-heat coil step 2 - Working hours threshold (1000hrs) R/W HR1437 PIV2945 Pre-heat coil step 2 - Working hours left to the maintenance IR471 PIV3805 Pre-heat coil step 2 - Working hours reset R/W HR1438 PIV2946 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 115 Enabling the selection of the temperature regulation for the fans DI703 BV1161 Enable fan temperature regulation FALSE R/W CS246 BV246 Ba15 Enable fan regulation in case of FreeCooling/FreeHeating FALSE R/W CS247 BV247 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 116 Fan control mode parameetrs (Speedtype, ramp up/down time, ecc..) R/W HR1579 PIV3075 - Ramp down timing for ZiehlAbegg fan [s] Fan control mode parameetrs (Speedtype, ramp up/down time, ecc..) - Running direction (FALSE=clockwise, TRUE=counter-clockwise) FALSE R/W CS258 BV258 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 117 Serial interface parameters (timeout, command delay, etc.) R/W CS244 BV244 - Start changing procedure of COM parameters Fan status (working mode, errors) - Status of the COM parameter IR513 PIV3827 changing procedure Tab. 10.c k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 118 PIV3179 Re Heating coil pumps enable antilock function TRUE R/W CS295 BV295 Re Heating coil pumps rotation time R/W HR1685 PIV3180 Dc12 Coil fl oating valve:Running time R/W HR1914 PIV3940 Tab. 10.e k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 119 Auxiliary Regulation 1 - Modulating: Error value 100.0 R/W HR1586 AV3081 Auxiliary Regulation 1 - Enable selection R/W HR1587 PIV3082 Auxiliary Regulation 1 - Enable selection: Manual enabling FALSE 0 R/W CS262 BV262 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 120 Auxiliary Regulation 4 - Modulating: Dead Band 999.9 R/W HR1637 AV3132 H039 Auxiliary Regulation 4 - Reverse mode FALSE 0 R/W CS285 BV285 Auxiliary Regulation 4 - Cooling/Heating mode FALSE 0 R/W CS286 BV286 Tab. 10.i k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 121 Reset type (FALSE: Blocker Alarm; TRUE: Warning) TRUE R/W CS321 BV321 Enable of the VDI function TRUE R/W CS322 BV322 Month selection variable R/W HR1704 PIV3199 Reset type (FALSE: Blocker Alarm; TRUE: Warning) TRUE R/W CS323 BV323 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 122 Countdown before the next inspection 65535 IR526 PIV3840 Reset timings after the inspection R/W CS361 BV361 Countdown before the next inspection 65535 IR527 PIV3841 Reset timings after the inspection R/W CS362 BV362 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 123 Defrost dripping time 9999 R/W HR1534 PIV3035 Post-dripping time [s] 9999 R/W HR1535 PIV3036 Ua24 BLDC minimum speed in defrost 40.0 -999.9 999.9 R/W HR1536 AV3037 Reverse valve delta P R/W HR1537 AV3038 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 124 R/W CS457 BV456 sion ratio condition BLDC envelope confi guration - Speed up mode enable to control FALSE R/W CS458 BV457 zones 5, 6, 7, 8 (to come back into zone 1) k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 125 Inverter Power Plus Info - Relay confi g. ON DI740 BV1198 Inverter Power Plus Info - Safety input status (STO); 0=drive enable; 1= DI741 BV1199 drive disable Inverter Power Plus Info - Speed register bit 15 DI742 BV1200 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 126 Curr compressor confi guration (Powerplus) - Motor base frequency UI_FreqLi- UI_ FreqLi- R/W HR1814 AV3300 mitMin mit500Hz Curr compressor confi guration (Powerplus) - Motor base voltage UI_MotBa- .UI_MotBa- R/W HR1815 PIV3301 seV_ seV_ MinLim MaxLim k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 127 Custom cofi guration data saving in progress FALSE DI762 BV1220 Inverter is online DI763 BV1221 Uc38 Maximum semiautomatic alarm reset retry number R/W HR1848 IV3334 Time threshold for semiautomatic reset 1440 R/W HR1850 PIV3335 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 128 R/W CS454 BV453 Reset type: 0=Manual - 1=Semiautomatic FALSE R/W CS455 BV454 PowerPlus address R/W HR1735 PIV3229 Modbus communication timeout [ms] 999999 R/W HR1852 PIV3336 Modbus command delay [ms] 999999 R/W HR1854 PIV3337 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 129 EVD parameters - Regulation parameters confi guration - MskLimMin .MskLimMax °C R/W HR1782 AV3268 Low suction temperature alarm threshold EVD parameters - Regulation parameters confi guration - MskLimMin MskLimMax s R/W HR1783 IV3269 Low suction temperature alarm timeout k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 130 Network address Y030 Serial interface parameters (timeout, command delay, etc.) - Fan HR1487 PIV2989 Network address Y035 PowerPlus address HR1735 PIV3229 Y040 uChiller address HR1737 PIV3230 Y045 IEC Humifog address 999999 HR1738 PIV3231 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 131 Show delay change cool/heat (only for user interface) DI649 BV1107 Supply temp.: cooling/heating delay time 9999 HR982 PIV2504 Qc08 Party mode: start command CS182 BV182 Party mode countdown 999999 IR200 PIV3591 Tab. 10.o k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 132 AV36 36 Humidifi cation/Dehumidifi cation: Absolute humidity control DI65 5 BV11 13 Humidifi cation request from PID Seq -999.9 999.9 IR24 9 AV36 37 Dehumidifi cation request -999.9 999.9 IR25 0 AV36 38 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 133 Split an int value into digits - ScP1-Suction press. of circ.1 -99.9 99.9 IR27 4 AV36 60 Split an int value into digits - Show the Compressor info circuit 2 DI66 6 BV11 24 on user interface k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 134 DI68 0 BV11 38 Fan alarms - Error status bit 1: Earth to GND fault DI68 1 BV11 39 Fan alarms - Error status bit 0: IGBT fault DI68 2 BV11 40 k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 135 • the values indicated by “... ” may diff er depending on the confi guration, and the options are shown on the user terminal; • an entire row of “... ” indicates similarly parameters that are repeated; • Modbus variables: HR (holding registers), DI (Discrete inputs), IR (input registers), CS (Coils); k.air +030220981 rel. 1.2 - 01.12.2020 Parameter table...
Page 136 11. SUPERVISOR VARIABLE TABLE The k.Air controller can be connected to supervisory systems using the Modbus protocol. The BMS serial ports are used for the connection (see the chapter on Communication ports). Meaning of the variables: • Coils: read/write, 1 bit (off /on);...
Page 137 Setpoint by digital input - Logic digital input CS113 BV113 Eco_Mode.LogicDin_RW Eco mode - Logic digital input CS114 BV114 PreComf_Mode.LogicDin_RW Precomfort mode - Logic digital input CS115 BV115 Comf_Mode.LogicDin_RW Comfort mode - Logic digital input CS116 BV116 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 138 CS176 BV176 FreshAirPreHeatPmp_2.LogicDout_RW Fresh Air pre-Heating pump 2 - Logic digital output CS177 BV177 FiltAlrm_Dout.LogicDout_RW Filters alarm - Logic digital output CS178 BV178 Recovery_Dout.LogicDout_RW Recovery - Logic digital output CS179 BV179 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 139 Return humidity - Alarm probe broken or disconnected DI018 BV476 RoomTemp.Enable_W Room temperature - Enable input DI019 BV477 RoomTemp.Confi gured_R Room temperature - Analog input confi gured DI020 BV478 RoomTemp.PrbOk_R Room temperature - Probe working correctly DI021 BV479 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 140 SuctP.Confi gured_R Suction pressure - Analog input confi gured DI084 BV542 SuctP.PrbOk_R Suction pressure - Probe working correctly DI085 BV543 SuctP.Alrm_R Suction pressure - Alarm probe broken or disconnected DI086 BV544 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 141 Al_SupplyFanOvld.Active Supply fan overload - Alarm status DI1038 BV1267 Al_RetFanOvld.Active Return fan overload - Alarm status DI1039 BV1268 ReHeatCoilWaterTemp.Confi gured_R Postheat coil water temperature - Analog input confi gured DI104 BV562 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 142 Humidifi er alarm - Alarm status DI1095 BV1323 Al_WrkHrs_Hum.Active Warning - Humidifi er maintenance required - Alarm status DI1096 BV1324 Al_WrkHrs_SupplyFan.Active Warning - Supply fan maintenance required - Alarm status DI1097 BV1325 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 143 EBM supply fan-Current limitation engaged (I_Limit) - Alarm status 1 DI1150 BV1376 Al_BrakeMode_EBM_SupplyFan.Active EBM supply fan-Brake mode (Brake) - Alarm status DI1151 BV1377 Al_CableBreak_EBM_SupplyFan.Active EBM supply fan-Cable break at set value analogue input DI1152 BV1378 (Cable break) - Alarm status k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 144 ZA return fan - UZK low - Alarm status DI1203 BV1429 Al_UIN_HI_ZA_RetFan.Active ZA return fan - UIN high - Alarm status DI1204 BV1430 Al_UIN_LO_ZA_RetFan.Active ZA return fan - UIN low - Alarm status DI1205 BV1431 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 145 Serious alarm from digital input - Alarm status DI1245 BV1471 Al_GenericWarnByDin.Active Generic warning from digital input - Alarm status DI1246 BV1472 Al_Sup1_DirtyFiltByDin.Active Supply - Dirty fi lter alarm - Alarm status DI1247 BV1473 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 146 Alarm - Humifog alarms present - Alarm status DI1291 BV1517 Al_IEC_Humifog.Active Alarm - IEC Humifog alarms present - Alarm status DI1292 BV1518 Al_Humifog_Offl ine.Active Alarm - Humifog offl ine - Alarm status DI1293 BV1519 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 147 RetFanOvld_2.Confi gured_R Return fan overload 2 - Digital input confi gured DI177 BV635 RetFanOvld_2.Val_R Return fan overload 2 DI178 BV636 SupplyFanInvAlrm.Val_Hw_R Supply inverter alarm - Value reads from board DI179 BV637 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 148 Main coil pump 1 overload - Enable input DI240 BV698 MainCoilPmp1_Ovld.Confi gured_R Main coil pump 1 overload - Digital input confi gured DI241 BV699 MainCoilPmp1_Ovld.Val_R Main coil pump 1 overload DI242 BV700 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 149 DI302 BV760 ReHeatAlrm.Val_Hw_R Re-heating alarm - Value reads from board DI303 BV761 ReHeatAlrm.Enable_W Re-heating alarm - Enable input DI304 BV762 ReHeatAlrm.Confi gured_R Re-heating alarm - Digital input confi gured DI305 BV763 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 150 AuxDin_4.Val_R Auxiliary digital input 4 DI366 BV824 DfrHeatExch_Din.Val_Hw_R Heat exchanger defrost by Din - Value reads from board DI367 BV825 DfrHeatExch_Din.Enable_W Heat exchanger defrost by Din - Enable input DI368 BV826 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 151 Unit status (On/Off ) - Hardware value writes from board DI435 BV893 UnitOnOff _Dout.Val_W Unit status (On/Off ) DI436 BV894 UnitOnOff _Dout.Enable_W Unit status (On/Off ) - Enable output DI437 BV895 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 152 Main step 1 - Hardware value writes from board DI499 BV957 MainCoil_Step1.Val_W Main step 1 DI500 BV958 MainCoil_Step1.Enable_W Main step 1 - Enable output DI501 BV959 MainCoil_Step1.Confi gured_R Main step 1 - Output confi gurated DI502 BV960 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 153 Fresh Air Preheat heater 4 - Output confi gurated DI562 BV1020 PreHeatPmp_1.Val_Hw_R Pre-Heating pump 1 - Hardware value writes from board DI563 BV1021 PreHeatPmp_1.Val_W Pre-Heating pump 1 DI564 BV1022 PreHeatPmp_1.Enable_W Pre-Heating pump 1 - Enable output DI565 BV1023 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 154 ThrmlWheel_Aout.Confi gured_R Thermal wheel - Analog output confi gured DI626 BV1084 Humidifi er_Aout.Enable_W Humidifi er - Enable output DI627 BV1085 Humidifi er_Aout.Confi gured_R Humidifi er - Analog output confi gured DI628 BV1086 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 155 Auxiliary regulation 4: Informations - Enable check confi gura- DI721 BV1179 tion error CheckCfgErr Comp_OnOff .OnOff Comp_IO_CfgWarn DI722 BV1180 BLDC_ compressor.BLDC_ Comp_ IO_CfgWarn DI723 BV1181 cpCOmini_HighEnd c.pCOmini high end version present DI724 BV1182 Tab. 11.b k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 156 PIV1571 Scheduler_Cfg.Prg[1].Event[5].Mode Scheduler: confi guration - Program - Event - 0=OFF; 1=Eco- HR049 PIV1572 nomy; 2=Comfort Scheduler_Cfg.Prg[1].Event[6].Hours Scheduler: confi guration - Program - Event - Start hours event 1 HR050 PIV1573 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 157 PIV1621 Scheduler_Cfg.Prg[3].Event[2].Mins Scheduler: confi guration - Program - Event - Start minutes event 1 HR099 PIV1622 Scheduler_Cfg.Prg[3].Event[2].Mode Scheduler: confi guration - Program - Event - 0=OFF; 1=Eco- HR100 PIV1623 nomy; 2=Comfort k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 158 1.WkDays_ T_ Msk [4] Scheduler_ OnOff Unit.FB_ SchedulerMskMng_ HR1226 PIV2734 1.WkDays_ T_ Msk [5] Scheduler_ OnOff Unit.FB_ SchedulerMskMng_ HR1227 PIV2735 1.WkDays_ T_ Msk [6] Scheduler_ OnOff Unit.FB_ SchedulerMskMng_ HR1228 PIV2736 1.SaveData_ DaysPrg k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 159 Scheduler_ OnOff Unit.FB_ SchedulerMskMng_ HR1259 PIV2767 1.SDays_ T_ Msk [4].Mode Scheduler_Cfg.SDays[1].Mode Scheduler: confi guration - Special day - Mode HR126 PIV1649 Scheduler_ OnOff Unit.FB_ SchedulerMskMng_ HR1260 PIV2768 1.SDays_ T_ Msk [5].Day k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 160 Scheduler: confi guration - Special day - Day HR134 PIV1657 Scheduler_Cfg.SDays[4].Mode Scheduler: confi guration - Special day - Mode HR135 PIV1658 Scheduler_Cfg.SDays[4].Month Scheduler: confi guration - Special day - Month HR136 PIV1659 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 161 HR196 AV1719 SupplyTemp.MaxVal_RW Supply temperature - Maximum value analog input HR197 AV1720 SupplyTemp.Off set_RW Supply temperature - Off set analog input HR198 AV1721 SupplyTemp.ChFilter_RW Supply temperature - Filter channel HR199 PIV1722 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 162 HR259 AV1782 ExhHum.MaxVal_RW Exhaust humidity - Maximum value analog input HR260 AV1783 ExhHum.Off set_RW Exhaust humidity - Off set analog input HR261 AV1784 ExhHum.ChFilter_RW Exhaust humidity - Filter channel HR262 PIV1785 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 163 HR322 AV1845 DscgP.MaxVal_RW Discharge pressure - Maximum value analog input HR323 AV1846 DscgP.Off set_RW Discharge pressure - Off set analog input HR324 AV1847 DscgP.ChFilter_RW Discharge pressure - Filter channel HR325 PIV1848 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 164 Auxiliary probe 2 - Minimum value analog input HR385 AV1908 AuxPrb_2.MaxVal_RW Auxiliary probe 2 - Maximum value analog input HR386 AV1909 AuxPrb_2.Off set_RW Auxiliary probe 2 - Off set analog input HR387 AV1910 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 165 SupplyFanOvld_1.Board_RW Supply fan overload 1 - Board selected HR448 PIV1971 SupplyFanOvld_1.Ch_Id_RW Supply fan overload 1 - Channel id selected HR449 PIV1972 RetFanOvld_1.Board_RW Return fan overload 1 - Board selected HR450 PIV1973 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 166 Pre-heating coil fl ow switch - Channel id selected HR511 PIV2034 ReHeatCoilFlwSw.Board_RW Post-Heating coil fl ow switch - Board selected HR512 PIV2035 ReHeatCoilFlwSw.Ch_Id_RW Post-Heating coil fl ow switch - Channel id selected HR513 PIV2036 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 167 Exhaust air damper - Time on cycle relay HR574 PIV2097 ExhAirDamp_Dout.T_Off _RW Exhaust air damper - Time off cycle releay HR575 PIV2098 ExhAirDamp_Dout.Ch_Type_RW Exhaust air damper - Digital output type HR576 PIV2099 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 168 Unit status (On/Off ) - Digital output type HR636 PIV2159 CoolHeat_Dout.Board_RW Cool/Heat status - Board selected HR637 PIV2160 CoolHeat_Dout.Ch_Id_RW Cool/Heat status - Channel id selected HR638 PIV2161 CoolHeat_Dout.T_On_RW Cool/Heat status - Time on cycle relay HR639 PIV2162 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 169 Main fl oating valve close - Time off cycle releay HR700 PIV2223 MainVlv_Close.Ch_Type_RW Main fl oating valve close - Digital output type HR701 PIV2224 PreHeatVlv_Close.Board_RW Pre-heating fl oating valve close - Board selected HR702 PIV2225 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 170 Preheat heater 3 - Channel id selected HR763 PIV2286 PreHeatCoil_Step3.T_On_RW Preheat heater 3 - Time on cycle relay HR764 PIV2287 PreHeatCoil_Step3.T_Off _RW Preheat heater 3 - Time off cycle releay HR765 PIV2288 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 171 Fresh Air pre-Heating pump 1 - Digital output type HR826 PIV2349 FreshAirPreHeatPmp_2.Board_RW Fresh Air pre-Heating pump 2 - Board selected HR827 PIV2350 FreshAirPreHeatPmp_2.Ch_Id_RW Fresh Air pre-Heating pump 2 - Channel id selected HR828 PIV2351 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 172 Fresh air pre-heating heater - Board selected HR889 PIV2412 FreshAirPreHeatCoil_Aout.Ch_Id_RW Fresh air pre-heating heater - Channel id selected HR890 PIV2413 FreshAirPreHeatCoil_Aout.MinOut_RW Fresh air pre-heating heater - Minimum signal analog output 1 HR891 AV2414 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 173 Recovery pump - Minimum signal analog output HR951 AV2474 Recovery_Aout.MaxOut_RW Recovery pump - Maximum signal analog output HR952 AV2475 Recovery_Aout.PulseWidth_RW Recovery pump - Pulse width setting HR953 AV2476 Recovery_Aout.Ch_Type_RW Recovery pump - Analog output type HR954 PIV2477 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 174 Current humidity set point - High limit value IR041 AV3433 SupplyTemp.Uom_W Supply temperature - Uom analog input IR042 PIV3434 SupplyTemp.Val_Hw_R Supply temperature - Value reads from board IR043 AV3435 SupplyHum.Uom_W Supply humidity - Uom analog input IR045 PIV3437 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 175 PIV3506 MainCoilWaterTemp.Val_Hw_R Main coil water temperature - Value reads from board IR115 AV3507 MainCoilWaterTemp.Val_R Main coil water temperature IR116 AV3508 ReHeatCoilWaterTemp.Uom_W Postheat coil water temperature - Uom analog input IR117 PIV3509 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 176 Return air damper IR185 AV3577 RetAirDamp_Aout.Val_Hw_R Return air damper - Hardware value writes from board IR186 AV3578 AlarmsMng.ErrParamExpAlrms IR197 IV3589 MaskMng.HeatExchgReq IR203 AV3593 MaskMng.CompStatusMsk IR225 IV3615 MaskMng.CompEnvCntDwn IR242 IV3630 VarToShow.IdxChName IR291 PIV3672 k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 177 Main coil fl oating valve: Estimating position valve IR619 AV3947 PreHeatVlv_Perc PreHeat coil fl oating valve: Estimating position valve IR620 AV3948 ReHeatVlv_Perc ReHeat coil fl oating valve: Estimating position valve IR621 AV3949 Tab. 11.d k.air +030220981 rel. 1.2 - 01.12.2020 Supervisor variable table...
Page 178 12. ALARMS AND SIGNALS 12.1 Types of alarms The k.Air controller manages three types of alarms, depending on the reset mode: • automatic: the alarm is reset and the unit restarts automatically when the alarm condition is no longer present;...
Page 179 12.3 Contatti generici di ingresso e uscita di allarme For greater installation fl exibility, k.air features three generic alarm inputs and three signal outputs. These contacts are always available, simply associate an activation channel using the I/O confi guration menus Wb03 and Wb04.
Page 180 EEV-LOP Automatic Immediate compressor shutdown DI1112 AL112 EEV-MOP Automatic Immediate compressor shutdown DI1113 AL113 EEV-High condensing temperature Automatic Immediate compressor shutdown DI1114 AL114 EEV-Low suction temperature Automatic Immediate compressor shutdown DI1115 k.air +030220981 rel. 1.2 - 01.12.2020 Alarms and signals...
Page 181 DI1176 AL174 EBM return fan-Brake mode (Brake) Automatic Immediate return fan shutdown DI1177 AL175 EBM return fan-Cable break at set value analogue input Automatic Immediate return fan shutdown DI1178 (Cable break) k.air +030220981 rel. 1.2 - 01.12.2020 Alarms and signals...
Page 182 Unit shutdown / Display only (parameter) DI1232 changed AL230 VDI alarm - Check accessible duct section for damage Automatic Unit shutdown / Display only (parameter) DI1233 contamination, corrosion, and water precipitation k.air +030220981 rel. 1.2 - 01.12.2020 Alarms and signals...
Page 183 AL286 Warning - IEC maintenance required Automatic Display only DI1289 AL287 Warning - Unit maintenance required Automatic Display only DI1290 AL288 Alarm - Humifog alarms present Automatic Immediate humifog shutdown DI1291 k.air +030220981 rel. 1.2 - 01.12.2020 Alarms and signals...
Page 184 PM2.5 sensor probe alarm Automatic Display only DI1323 AL303 Sanifi cation device alarm Automatic Display only DI1326 AL304 Warning - Sanifi cation device maintenance required Automatic Display only DI1327 Tab. 12.a k.air +030220981 rel. 1.2 - 01.12.2020 Alarms and signals...
Page 185 Important: only application software supplied and approved by CAREL INDUSTRIES S.p.A. can be loaded onto the k.Air con- troller. Important: before updating the k.Air controller via USB connection, check in the system menu that the USB Host port is enabled (path Settings > USB Settings > Pen drive).
Page 186 13.2 Update via USB pen drive All k.Air models are equipped with a USB host (Master) port that a USB mass storage device can be connected to (typically a USB pen drive or portable hard disk) so as to update the application program. To update the controller, the .ap1 application update fi le is required, supplied by CAREL INDUSTRIES S.p.A.:...
Page 187 13.3 Update with fi le transfer via FTP k.Air controllers include an FTP server that allows access to the public partition of the fi le system. It is thus possible to read, modify, create and remove fi les and folders. A client program is used to transfer fi les with the FTP protocol, such as “FileZilla”.
Page 188 Note k.air +030220981 rel. 1.2 - 01.12.2020...
Page 189 Note k.air +030220981 rel. 1.2 - 01.12.2020...
Page 190 Note k.air +030220981 rel. 1.2 - 01.12.2020...
Page 192 CAREL INDUSTRIES - Headquarters Via dell’Industria, 11 - 35020 Brugine - Padova (Italy) Tel. (+39) 049.9716611 - Fax (+39) 049.9716600 k.air +030220981 rel. 1.2 - 01.12.2020 e-mail: carel@carel.com - www.carel.com k.air +030220981 rel 1.1 - 31.03.2020...

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