Installation – Commissioning – Maintenance Installation – circular version Air flow measuring of REACT requires a straight section of duct before the unit (in air flow direction), according to installation figures. Modbus tables are available in a separate document (REACTa_Modbus-m). 1. Circular Variable-flow damper REACT 2. Clamp, FSR 3. Sound attenuator with baffle Figure 1. Permissible ambient temperature. Figure 3. Straight section requirements, circular ducts. Figure 4. REACT requires a duct of ~2 x ØD between the REACT and a sound attenuator fitted with baffles. NOTE: Ducts must be fixed on both sides of REACT. Figure 2. Space required for installat

REACT Straight sections before/after REACT – Sound attenuator with baffles Figure 7. Straight section requirements, rectangular REACT and sound attenuator with baffles. Installation with a length of straight duct applies to both the supply air and the extract air. 1 = Rectangular Variable-flow damper REACT. 2 = ≥ 500 mm length of straight duct. 3 = Sound attenuator with baffles. Figure 5. Installation in a duct system. The ducts must be firmly fixed to the frame of the building on each side of the REACT unit. Installation measurements – circular version Size Size 500, 630 has installation dimension...

Dimensions and weights REACT - circular version and FSR Size Figur 11. Circular REACT GUAC with spring return actuator. 20170824 Swegon reserves the right to alter specifications.

REACT insulated - circular version *Both versions. REACT - rectangular version Dimensions B and H (B = Width, H = Height), can be found in the table; "Air flows and measures - rectangular version", see page 11. Swegon reserves the right to alter specifications. 20170824

Technical data To obtain the correct functionality. it is very important that the following is taken into account: • REACT may only be installed in spaces with an ambient temperature in the range 0-50°C. • All interconnected regulating equipment must have the same polarity. i.e. the neutral wire must be correctly connected. • The product should always be installed with its flow meter facing downstream, see air direction arrows on the product label. • REACT is not suitable for use in explosive environments. • All service must be carried out with the power supply disconnected. Operating data Ambient...

REACT Wiring, standard version Wiring, Modbus version BU-BN – Operating voltage BU-BN – Operating voltage BU-BK – Control signal BU-BK – Control signal BU-GY – Feedback signal BU-GY – Feedback signal BU = Blue (1) BN = Brown (2) BK = Black (3) GY = Grey (4) BU = Blue (1) BN = Brown (2) BK = Black (3) GY = Grey (4) WH = White (A, B) Figure 17. Wiring diagram, standard version. Figure 19. Wiring diagram, Modbus version. Connection GUAC version Override control and control signal Connections are made in accordance with the left-hand circuit diagram GUAC, see label on the inside of the cover. 1-2...

Handling Vnom Vmax Test Commissioning – Flows Made in Germany 24 VAC/DC 50/60 Hz 0...+50°C IP 42 Figure 21. The REACT interface. 1 – Select desired mode by turning the "Mode" wheel. 2 – Set values and select sub-settings by turning the ”Edit" wheel. 3 – The displayed value blinks twice when a new value is accepted. 4 – ”Gear release” button Flow Menus Flow • Toggle between l/s and m3/h using the edit wheel. om • Vmin value should be lower than Vmax. Vnom • Select new value for Vmin with the edit wheel. • Illuminated "dot" in the display indicates the selected mode. ow • Automatic disconnection...

How to use Modbus Modbus tables are available in a separate document (REACTa_Modbus-m). Swegon reserves the right to alter specifications. 20170824

REACT Room thermostat 1 = REACT supply air 2 = REACT extract air = Modbus Figure 23. The diagram shows how to wire a RTC room unit with simultaneous control of the extract air. The figure also shows an alternative with RTCT duct temperature sensor. 1 = REACT supply air 2 = REACT extract air = Modbus Figure 24. The diagram shows how to wire the CO2 sensor with combined DETECT Q temperature control and simultaneous control of the extract air. Two-flow control with presence detector REACT 1 = REACT supply air 2 = REACT extract air = Modbus Figure 25. The diagram shows how to wire the DETECT O presence...

REACT VAV regulation with room thermostat and presence detector RTC 1 = REACT supply air. 2 = REACT extract air. = Modbus. Should only be used on the last REACT in the Modbus loop Figure 26. The diagram shows how to wire a RTC room unit and DETECT O with simultaneous control of the extract air. VAV is used for occupancy, otherwise min. airflow. The figure also shows the alternative with RTCT duct temperature sensor. VAV regulation and heat regulation with thermo-actuators 1 = REACT supply air 2 = REACT extract air 3 = Thermo-actuator, heat = Modbus Should only be used on the last REACT in the...

Dimension, air-flow and k-factors All REACT variants - Standard, Modbus, spring return Circular version Rectangular version - continued Size *At Qm^ a measurement pressure of 1 Pa is obtained with a measurement accuracy of ± 5-20% Rectangular version (B = Width, H = Height) 20170824 Swegon reserves the right to alter specifications.

REACT Checking performance – REACT Checking the min. airflow The easiest way to do this is by disconnecting the white cable marked 3. The damper will then move to the closed position. Measure the voltage U (between cables 1 and 4)and calculate the airflow using the formulas on this page. Checking the max. airflow Use the room thermostat, or some other control equipment, to override the system so the control voltage will be a 10 V input on the white cable 3. As an alternative, you can short circuit between cables 2 and 3. This will command the controller to go to the preset max. airflow setting....