Application sheet VAV282 Application sheet VAV282 Room pressurization through air flow tracking and temperature control, heating and cooling coil or ceiling heating/chilled ceiling or radiator ● ● ● ● ● ● ● For pressurized rooms with VAV actuators and optional fume hoods Supply and exhaust air volume control for fast, precise VAV damper actuators on 0...
Application sheet VAV282 Plant diagram DXR2… BE BS BP DW DP RU R YS YC YHC YH YE Room automation station Exhaust air temperature sensor Supply air temperature sensor Primary air temperature sensor Door switch/Window contact Presence detector Room operator unit with temperature sensor Room VAV supply air control including actuator YSM and pressure sensor YSP Chilled water cooling coil Cooling/heating coil Hot water heating coil or electric heating coil VAV exhaust air control including actuator YSM and pr
Application sheet VAV282 Function description Basic functions ● PID control for supply and exhaust air VAV, room pressurization, temperature and air quality ● The following priority prevails if functions conflict: 1. Room pressurization, 2. Air change rate, 3. Temperature control. ● Alarms for room pressurization and ventilation ● Room pressurization with door contact to freeze room pressure control loop ● The room operator unit measures temperature, humidity, and air quality (CO2).
Application sheet VAV282 Siemens devices Description Device type Data sheet Type Qty. DXR2… Compact room automation station, BACnet/IP, 24 V, DIN housing, 3 DI, 2 BI, 4 UI, 4 DO triacs, 4 AO 0…10 V A6V10959860 DXR2.E17C103°A DXR2.E17CX103A 1 RU KNX PL-Link room operator unit with sensors for N1602 temperature, humidity, CO2, segmented backlit display, touchkeys QMX3.P34 1 YS, YE VAV damper actuator, AC 24 V, DC 0...10 V, 6 Nm, 2 s N4608 GAP191.
Application sheet VAV282 Connection diagram A6V12189450_en--_a 5 | 11
Application sheet VAV282 Application configuration Group Equipment Values/range Template settings On-board output Variable air volume Supply air Y1, Y2; 3-position Y10; Y30; 0...10 V Setpoint for air volume flow; Y10, Y30; 0...10 V Y10; 0...10 V Variable air volume Y3, Y4; 3-position Y20; Y40; 0...10 V Setpoint for air volume flow; Y20, Y40 0...10 V Y20; 0...10 V Extract air differential pressure X1; X3; 0…10V, 4...20mA; SCOM P1; P3; SCOM Supply air differential pressure X2; X4; 0…10 V, 4...
Application sheet VAV282 Group Equipment Values/range Template settings Y10; Y20; Y30; Y40; 0...10 V On-board input Radiator valve 1...2 Water; Y1/Y2; Y3/Y4; 3-position 1) Water; Y1; Y3; pulse width modulation thermal 2) Water; Y2; Y4; pulse width modulation thermal 1) Water; Y1; Y3; pulse width modulation spring return 2) Water; Y2; Y4; pulse width modulation spring return Water; Y10; Y20; Y30; Y40; 0...
Application sheet VAV282 Group Equipment Values/range Template settings Heating coil overtemperature D1; D2; D3; NO detector X1; X2; X3; X4; NO Radiator overtemperature detector D1; D2; D3; NO X1; X2; X3; X4; NO Condensation monitor for chilled ceiling D1; D2; D3; NO X1; X2; X3; X4; NO Condensation monitor VAV cooling coil D1; D2; D3; NO X1; X2; X3; X4; NO Humidity detector in duct D1; D2; D3; NO X1; X2; X3; X4; NO Flow sensor D1; D2; D3; NO X1; X2; X3; X4; NO Blinds collision detector 1..
Application sheet VAV282 Group Room operator unit Parameter Values/range Template settings Supply air VAV max. air volume flow Ventilation 0...10,000 m3/h 100 m3/h Supply air VAV min. air volume flow Ventilation 0...
Application sheet VAV282 Engineering ● The ABT Site engineering tool is required to engineer DXR2 automation stations. ● See the Siemens Download Center at www.siemens.com/bt/download for the latest application configuration and workflow tutorials. ● Options combined as per available on-board - I/Os.
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