User Manual for VENTS models including: A21, Wireless Control System, A21 Wireless Control System
Ventilation units for suspended mounting DVUT PB EC | VENTS
4 A21 www.ventilation-system.com CONTROLLER WIRING DIAGRAM 10 V IN RH RH VOC VOC CO2 CO2 PM2.5 PM2.5 P1/Q1 T1 T2 T3 T4 T5 NKP TRIAC NKD TRIAC P1Q1
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DocumentDocumentUSER'S MANUAL A21 Wireless control system A21 2 www.ventilation-system.com CONTENTS Controller wiring diagram........................................................................................................................................................ 4 Connecting a mobile device to the unit ....................................................................................................................... 7 Mode priorities................................................................................................................................................................................ 8 Alarm and warning codes........................................................................................................................................................ 9 This user's manual is a main operating document intended for technical, maintenance, and operating staff. The manual contains information about purpose, technical details, operating principle, design, and installation of the A21 unit and all its modifications. Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country. www.ventilation-system.com 3 Electric shock hazard! 4 0-10 C Vcc 24 V GND C 0-10 L GND L GND 2 GND 3 In 4 GND N 1 CONTROLLER WIRING DIAGRAM T1 T2 T3 T4 T5 NKP TRIAC NKD TRIAC L NL N M M RH VOC CO2 PM2.5 P1Q1 P2Q2 Vcc 24 V 0-10 GND GND Vcc 24 V 0-10 GND 24 V Vcc 0-10 GND 24 V Vcc 24 V Vcc 0-10 GND 10 V Vcc 0-10 GND In Exh Su In 10 V Out Taho GND Taho Out 10 V GND M1 M2 0 10V OUT FILTER 10 V IN RH VOC CO2 PM2.5 P1/Q1 P2Q2 GND A B 24 V RS-485 In NTC GND 10kOm In NTC GND 10kOm In NTC GND 10kOm In NTC GND 10kOm In NTC GND 10kOm In L In N Out L R Out N In L In N Out L R Out N www.ventilation-system.com 220 V L1 L2 L3 L4 L5 NKD NKP VALVE1 VALVE2 KKB BPS NC C NO NO C NO C NO C NO NO N L N L N N L L 220V 50Hz N A21 Controller power supply: 100-250 V, 50 (60) Hz, maximum power consumption 30 W. Controller inputs Input purpose Input type Signal type Designation Operation logic Comments Outdoor air temperature Analogue NTC 10 T1 kOm -40...120 °C Supply air temperature or temperature Analogue NTC 10 T2 downstream of the main air heater kOm -40...120 °C Extract air temperature Analogue NTC 10 T3 kOm -40...120 °C Extract air temperature Analogue NTC 10 T4 kOm -40...120 °C Return heat medium temperature Analogue NTC 10 T5 kOm -40...120 °C External set point adjuster Analogue 0-10 V 10 V IN Enables fan speed control by means of a potentiometer. This input is enabled/disabled via the Engineering Menu (sensors). The terminal is energised with 10 V. Main humidity sensor Main VOC sensor Main CO2 sensor Main PM2.5 sensor Analogue Analogue Analogue Analogue 0-10 V 0-10 V 0-10 V 0-10 V RH VOC CO2 PM2.5 Each of the sensors is enabled/disabled via the Engineering menu. The sensors are energised with 24 V for powering external sensors. The power supply overload protection is triggered by a short circuit or a total current on the 24 V line in excess of 700 mA. Once the overload protection is activated, the power is restored only after a manual reset at the power supply unit. Supply fan control Exhaust fan control Discrete Discrete Open M1 (TACHO) NC collector/ dry contact Open M2 (TACHO) NC collector/ dry contact The control feature can be configured to fan tach pulses or an external dry contact, or disabled. You can also program the number of tach pulses per fan revolution and the alarm condition detection time. Supply filter contamination control Discrete Dry contact FILTER (IN SU) NO Extract filter contamination control Discrete Dry contact FILTER (IN EXH) NO Heat medium flow control Discrete Dry contact L1 NC This input is enabled/disabled via the Engineering Menu. Heat medium pressure control Discrete ~220 V L2 NC This input is enabled/disabled via the Engineering Menu. Fire alarm sensor Discrete ~220 V L3 NC This input is enabled/disabled via the Engineering Menu. Boost switch Discrete ~220 V L4 NO This input is enabled/disabled via the Engineering Menu. Fireplace switch Discrete ~220 V L5 NO This input is enabled/disabled via the Engineering Menu. Electric preheating thermostat (alarm) Discrete ~220 V NKP TRIAC (IN) NC Electric reheater thermostat (alarm) or water heater capillary thermostat (alarm) Discrete ~220 V NKD TRIAC (IN) NC www.ventilation-system.com 5 A21 Output purpose Supply fan control Output type Analogue Exhaust fan control Analogue Analogue control of the reheater or Analogue water heater valve control Analogue control of the bypass Analogue Controller outputs Signal type Designation Note 0-10 V 0-10 V 0-10 V 0-10 V M1 (OUT 0-10) M2 (OUT 0-10) 0-10V OUT (1) 0-10V OUT (2) You can configure the minimum and the maximum value of the signal sent to an active fan and the delay before switching to automatic control after activating the unit. The operation of this output depends on the heater type selected via the Engineering Menu: Electric. The system controls an external circuit board which operates the heater (e.g. multi-stage) Water. 2-10 V valve control signal. Analogue control of the cooler Analogue 0-10 V Electric preheater control External TRIAC control Electric reheater control External TRIAC control Electric preheater release Relay Electric heater release or water heater Relay pump release Supply damper actuator control and/or Relay supply fan frequency converter release Extract damper actuator control and/or Relay exhaust fan frequency converter release Discrete control of the cooler Relay 3A, =30 V/~250 V 3A, =30 V/~250 V 3A, =30 V/~250 V 3A, =30 V/~250 V 3A, =30 V/~250 V Discrete control of the bypass or analogue control of the rotary heat exchanger Two relay outputs 3A, =30 V/~250 V 3A, =30 V/~250 V 0-10V OUT (3) The operation of this output depends on the cooler type selected via the Engineering Menu: Discrete. Output inactive. Analogue. The output will control the built-in or external cooler with its own control circuit. NKP TRIAC PWM signal is modulated to an external TRIAC with a 10 second cycle. (OUT ) NKP TRIAC PWM signal is modulated to an external TRIAC with a 10 second cycle. (OUT ) NKP NKD VALVE1 VALVE2 KKB The operation of this output depends on the cooler type selected via the Engineering Menu: Discrete. The output will directly control the cooler. Analogue. The output will be used for cooler release. You can configure the minimum activation period and the minimum idle time before a subsequent activation. BPS The operation of this output depends on the unit configuration. Discrete bypass: Opening the bypass closes the BPS relay (C - NO) and opens the BPS relay (C - NC). Closing the bypass opens the BPS relay (C - NO) and closes the BPS relay (C - NC). Rotary heat exchanger: Discrete. The output will directly control the actuator. Analogue. The output will be used for actuator release. The BPS relay (C - NO) is enabled. RS-485 Wi-Fi Communication interfaces The terminal (RS-485) is energised with 24 DC V to power up to 16 external devices. The maximum current is 500 mA. Any current in excess of 500 mA triggers the overload protection to automatically restore power once the load reverts to normal. The unit can be fitted with a 50 ohm remote antenna. 6 www.ventilation-system.com CONNECTING A MOBILE DEVICE TO THE UNIT The fan is controlled by the Vents Home application on the mobile device. The application is available for download at App Store, Play Market or via the QR code. Vents Home App Store Vents Home Play Market Standard Frequency band [GHz] Transmission power [mW] (dBm) Network WLAN safety Wi-Fi technical data IEFE 802,11, b/g/n 2.4 100(+20) DHCP WPA, WPA2 www.ventilation-system.com 7 A21 MODE PRIORITIES Fireplace ON no yes Air flow for Fireplace mode Timer ON yes Air flow for Timer mode no yes Air flow for Standby ON Standby mode no Boost ON yes Air flow for Boost mode no Schedule ON no 0-10V input activated yes Air flow for Schedule mode yes Air flow according to the analogue input Standby yes mode selected no no Preset speed 1, 2, 3 ... or manual speed setting no Analogue input value > 0 % yes Humidity, 2, 2.5 or VOC no threshold increase yes Air flow PI controller based on worst-case parameter 8 www.ventilation-system.com ALARM AND WARNING CODES Code Description 0 Alarm! Supply fan malfunction. · Determined depending on a specific configuration. · By rpm: if the supply fan speed drops below 300 rpm for 30 seconds (configurable within a 5 to 120 second range). · By discrete input: if the discrete input (A 1) remains open for 30 seconds (configurable within a 5 to 120 second range) provided that the supply fan must be running. 1 Alarm! Extract fan malfunction. Determined depending on a specific configuration. · By rpm: if the extract fan speed drops below 300 rpm for 30 seconds (configurable within a 5 to 120 second range). · By discrete input: if the discrete input (A 2) remains open for 30 seconds (configurable within a 5 to 120 second range) provided that the extract fan must be running. 2 Alarm! No outdoor air temperature sensor detected. Determined if the heat exchanger freeze protection is active or the unit is configured with a bypass, a rotary heat exchanger, a cooler or a water heater. 3 Alarm! Short circuit of the outdoor air temperature sensor. Determined if the heat exchanger freeze protection is active or the unit is configured with a bypass, a rotary heat exchanger, a cooler or a water heater. 4 Alarm! No supply air temperature sensor detected. Determined in any unit configuration. 5 Alarm! Short circuit of the supply air temperature sensor. Determined in any unit configuration 6 Alarm! No sensor of the extract air temperature upstream of the heat exchanger detected. Determined if the extract air temperature sensor is selected as the master sensor for temperature control provided that the main heater or condensing unit are enabled. The alarm will also be determined irrespective of which sensor is selected for temperature control if the bypass or rotary heat exchanger is enabled. 7 Alarm! Short circuit of the extract air temperature sensor. Determined if the extract air temperature sensor is selected as the master sensor for temperature control provided that the main heater or condensing unit are enabled. The alarm will also be determined irrespective of which sensor is selected for temperature control if the bypass or rotary heat exchanger is enabled. 8 Alarm! No sensor of the exhaust air temperature downstream of the heat exchanger detected. Determined if the heat exchanger freeze protection is active. 9 Alarm! Short circuit of the exhaust air temperature sensor. Determined if the heat exchanger freeze protection is active. 10 Alarm! Preheater protective thermostat activated. Determined if the preheater is selected for protecting the heat exchanger from freezing (NKP IN). 11 Alarm! Main heater protective thermostat activated. Determined if electric or water heater is enabled as the main heater and the discrete input (NKD IN) is open. 12 Alarm! Preheating cannot provide heat exchanger freezing protection. Determined if the preheater is selected for protecting the heat exchanger from freezing and freezing danger warning has been active for 30 minutes. 13 Warning! Main humidity sensor not detected. Determined if the main humidity sensor is activated and its signal value is 0. 14 Warning! Main CO sensor not detected. Determined if the main CO sensor is activated and its signal value is 0. 15 Warning! Main PM2.5 sensor not detected. Determined if the main PM2.5 sensor is activated and its signal value is 0. 16 Warning! Main VOC sensor not detected. Determined if the main VOC sensor is activated and its signal value is 0. 17 Warning! External humidity sensor not detected. Determined if the sensor has sent no feedback to the controller for 20 seconds while being active. 18 Warning! External CO sensor not detected. Determined if the sensor has sent no feedback to the controller for 20 seconds while being active. 19 Warning! External PM2.5 sensor not detected. Determined if the sensor has sent no feedback to the controller for 20 seconds while being active. 20. Warning! External VOC sensor not detected. Determined if the sensor has sent no feedback to the controller for 20 seconds while being active. www.ventilation-system.com 9 A21 21 Warning! Indoor air temperature not detected! The air temperature is controlled by using the feedback from the temperature sensor in the supply air duct downstream of the heat exchanger. Determined if no sensor data has been communicated from the control panel to the controller for 20 seconds if the sensor is selected as the temperature control master sensor provided that the main heater, the bypass, the rotary heat exchanger or the condensing unit are enabled. 22 Warning! Heat exchanger freezing danger. Determined if the supply fan is enabled, the outdoor temperature drops below -3 ° and remains below -1 °, and the exhaust air temperature downstream of the heat exchanger drops below 2 ° and remains below 3 °. 23 Warning! The battery is low. The weekly schedule function will work incorrectly. Determined if no battery is detected or its voltage level drops below 2 V. The battery voltage level is monitored every 5 minutes. 24 Warning! Replace the supply air filter. Determined if the pressure switch is triggered closing the discrete input (FILTER IN SU). 25 Alarm! Fire alarm activated. Determined if the fire alarm sensor is triggered opening the discrete input (L3). This alarm causes the fans to shut down immediately overriding any prior electric heater blowing commands. 26 Alarm! Low supply air temperature. Determined if the minimum supply air temperature control function is enabled (the default setpoint is +10 ° configurable within a +5 ° to +12 ° range), and the supply air temperature remains below the control setpoint for 10 minutes with the condensing unit disabled and the bypass closed. 27 Alarm! Return water temperature sensor not detected. Determined if the water heater is enabled as the main heater. 28 Alarm! Short circuit of the return water temperature sensor. Determined if the water heater is enabled as the main heater. 29 Warning! Replace the extract air filter. Determined if the pressure switch is triggered closing the discrete input (FILTER IN EXH). 30 Alarm! No water pressure detected. Determined if no water pressure is detected provided that the water heater and the water pressure sensor are enabled. 31 Alarm! No water flow detected. Determined if no water flow is detected provided that the water heater and the water flow sensor are enabled. 32 Alarm! Low return water temperature. 33 Alarm! Supply fan cannot provide heat exchanger freezing protection. Determined if the supply fan is selected for protecting the heat exchanger from freezing and the freezing danger warning has been active for 30 minutes. 34 Alarm! Bypass cannot provide heat exchanger freezing protection. Determined if the bypass is selected for protecting the heat exchanger from freezing and the freezing danger warning has been active for 30 minutes. 35 Warning! Freeze protection disabled. This may cause heat exchanger freezing! Determined if the rotary heat exchanger is not enabled and the freeze protection is deactivated. 36 Warning! The main heater is operated in the manual mode. 37 Warning! The cooler is operated in the manual mode. 38 Warning! The bypass is operated in the manual mode. 39 Warning! The rotary heat exchanger is operated in manual mode. 40 Warning! The filter timer countdown is completed. Please, replace the filter. 41 Warning! Incorrect operation of the rotary heat exchanger. 42 Warning! Preheater is operated in the manual mode. 43 Alarm! Return water temperature failed to reach setpoint in due time before AHU start. 44 Warning! The selected type of freeze protection of the heat exchanger by means of the bypass is replaced by freeze protection by means of the supply fan as the main heater operation is not allowed. 45 Warning! The fireplace mode is locked. This mode is not compatible with the selected type of freeze protection of the heat exchanger. 10 www.ventilation-system.com www.ventilation-system.com 11 V55-8EN-04