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Summary of Contents for Vents A21
- Page 1 USER’S MANUAL Wireless control system...
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Page 2: Table Of Contents
Alarms ........................................12 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. -
Page 3: Controller Wiring Diagram
CONTROLLER WIRING DIAGRAM NKP TRIAC NKD TRIAC – Electric shock hazard! www.ventilation-system.com... - Page 4 Controller power supply: 100-250 V, 50 (60) Hz, maximum power consumption – 30 W. Controller inputs Signal Operation Input purpose Input type Designation Comments type logic Outdoor air temperature Analogue NTC 10 -40...120 °C Supply air temperature or temperature Analogue NTC 10 -40...120 °C downstream of the main air heater...
- Page 5 Controller outputs Output Output purpose Signal type Designation Note type Supply fan control Analogue 0-10 V M1 (OUT 0-10) 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.
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Page 6: Connecting A Mobile Device To The Unit
The fan is controlled by the 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 Wi-Fi technical data... -
Page 7: Basic Modes
BASIC MODES Standby mode: this mode turns off the unit. Provides for fans complete stop blocking. Air flow of the fans is configured in the engineering menu. When air flow value greater than 0% is selected in this mode, there will be no setpoint temperature control (only +15 °C temperature heating Auto will be maintained if there is a heater and... - Page 8 Mode priorities Air flow for Fireplace Fireplace ON mode Air flow for Timer ON Timer mode Air flow for Standby ON Standby mode Air flow for Boost ON Boost mode Air flow for Standby Schedule ON Schedule mode mode selected Air flow according 0-10V input to the analogue...
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Page 9: Engineering Menu
ENGINEERING MENU Note: the engineering menu requires expert skills. Inadvertent changes to the engineering menu parameters may cause AHU malfunction. By default the password is 1111. Air flow Standby Boost Fireplace This menu section enables setting the air flow values for the mode, speed 1,2,3 pre-sets as well as the modes. -
Page 10: Freeze Protection
temperature at a low temperature setpoint in the supply duct or when the heater operation is not allowed. Return water temp. Max. start temp. Min. start temp. Standby temp. +5 °C Max. alarm temp. Min. alarm temp. Outdoor temp. -30 °C +10 °C Cooler control mode. - Page 11 Fireplace switch. If this input is enabled, the Fireplace mode is activated on receiving a signal to this input (on). Note: the Fireplace mode is not available if the unit is configured to heat exchanger freeze protection by supply fan or by bypass with the heater disabled.
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Page 12: Alarms
ALARMS Alarms menu displays a list of alarms and warnings. Alarm records are highlighted in red, warning records are highlighted in black. Alarm A serious operation error has occurred. The unit is forcibly turned off. Reset Alarms The alarm must be reset manually using the button. - Page 13 Warning! Main humidity sensor not detected. Determined if the main humidity sensor is activated and its signal value is 0. Warning! Main CO₂ sensor not detected. Determined if the main CO₂ sensor is activated and its signal value is 0. Warning! Main PM2.5 sensor not detected.
- Page 14 Warning! The bypass is operated in the manual mode. Warning! The rotary heat exchanger is operated in manual mode. Warning! The filter timer countdown is completed. Please, replace the filter. Warning! Incorrect operation of the rotary heat exchanger. Warning! Preheater is operated in the manual mode. Alarm! Return water temperature failed to reach setpoint in due time before AHU start.
- Page 15 www.ventilation-system.com...
- Page 16 V55-8EN-05...
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