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Application sheet VAV285

Application sheet VAV285

A6V12189441_en--_a 1 | 11

Application sheet VAV285

Room pressurization with room air pressure sensor, air volume flow tracking and

temperature control, heating and cooling coil or ceiling heating/chilled ceiling or

radiator with two room segments

● Room pressurization with room air pressure sensor

● For pressurized rooms with VAV equipment and optional fume hoods

● Supply and exhaust air volume control for fast, precise VAV damper actuators on 0...10 V outputs

● Airflow coordination for pressurized room including simple tracking (one supply air, one exhaust air) and

large laboratory rooms with multiple supply, exhaust and fume hood exhaust

● Pressurization control by air flow tracking

● Ventilation control to remove and dilute air contaminants for positive and negative pressurized rooms

● Comprehensive room temperature and air balancing in cascade

● Monitoring of VAV air volume flows, min. room air volume flow (Air Change Rate) to room pressure

● Configurable, generic universal control functions for free I/Os

● Support of AirOptiControl to optimize air volume flow in system and energy consumption of the primary fan

Summary of content (11 pages)

PAGE 1
Application sheet VAV285 Application sheet VAV285 Room pressurization with room air pressure sensor, air volume flow tracking and temperature control, heating and cooling coil or ceiling heating/chilled ceiling or radiator with two room segments ● ● ● ● ● ● ● ● ● ● Room pressurization with room air pressure sensor For pressurized rooms with VAV equipment and optional fume hoods Supply and exhaust air volume control for fast, precise VAV damper actuators on 0...
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Application sheet VAV285 Plant diagram DXR2… BS DW DP RU R… YS YC YHC YH YE PR Room automation station Supply 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 (optional) Cooling/heating coil (optional) Hot water or electric heating coil (optional) VAV exhaust air control including actuator YSM and pressure sensor YSP Room air pressure sensor
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Application sheet VAV285 Function description Basic functions ● PID control for volume flow control of supply and exhaust air, room pressurization with room air pressure sensor, temperature and air quality ● The following priority prevails if functions conflict: 1. Room pressure control, 2. Air change rate, 3. Temperature control.
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Application sheet VAV285 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.E17CX103A 1 RU KNX PL-Link room operator unit with sensors for N1602 temperature, humidity, CO2, segmented backlit display, touchkeys QMX3.
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Application sheet VAV285 Connection diagram A6V12189441_en--_a 5 | 11
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Application sheet VAV285 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 Y30; 0..10V 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 Y40; 0..10 V Exhaust air differential pressure X1; X3; 0…10V, 4..
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Application sheet VAV285 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...
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Application sheet VAV285 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...
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Application sheet VAV285 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...
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Application sheet VAV285 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 configurations and workflow tutorials. ● Options combined as per available on-board - I/Os.
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Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies © Siemens Switzerland Ltd, 2021 Technical specifications and availability subject to change without notice.