Room controller STRA-17

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1 Room controller STRA-17 Application example Room 2 Room 3 Room 4 SCADA EXOline alt. RS485 Modbus Transformer STRZ-24 (Required component) STRA-17 is a preprogrammed room controller intended to control heating and cooling in after-treatment systems. It is preprogrammed with communication and is intended for use in premises where high comfort and low energy consumption is aimed, e.g. offices, schools, shopping centres, airports, hotels, hospitals and so on. Room controller description Communication via RS485 (Modbus, BACnet or EXOline) to operate as a stand-alone control or to be connected to a central system. Easy installation thanks to separate basic plate for cable connections. Display 5 different operating modes On/Off or V control Input for occupancy detector, window contact, condensation detector, CO 2 and change-over function Internal temperature External temperature STRZ-05 Occupancy detector STRZ-09 Changeover STRZ-15 Optional accessories Condensation detector STRZ-16 Window contact STRZ-38 STRA-17 can control up to 16 STRZ-70 thermal actuators, devided into heating and cooling output Note that an adapter might be necessary if a thermal actuator other than STRZ-70 is used. The number is dependant on the initial electrical consumption of the valve actuator. If another thermal actuator than STRZ-70 is used, contact Fläkt Woods. Functions Cooling and heating (water coil or electrical heater) EC fan control Setpoint buttons CO 2 control Occupancy (forced ventilation) Change-over Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

2 Room controller STRA-17 Controller modes STRA-17 can be configured for different controller modes/ control sequences: Heating Heating/Heating Heating/Cooling via change-over Heating/Cooling Heating/Cooling with VAV-control and forced supply air function Heating/Cooling with VAV-control Cooling Cooling/Cooling Heating/Cooling with change-over for cooling The controller is factory set to Heating/cooling. Choosing another sequence is easily done in the parameter menu in the display. Information on how to access the parameter menu and configure the controller, consult either the technical manual or the installation and maintenance folder. Operating modes There are five different operating modes: Off, Unoccupied, Stand-by, Occupied and Bypass. Occupied is the preset operating mode. It can be changed to Standby in the parameter menu in the display. The operating modes can be activated via a central command, an occupancy detector or the Occupancy button. Off: Heating and cooling are disconnected. However, the temperature must not drop below the set minimum temperature (Factory setting (FS)=8 C). Operating mode Off is activated on open window. Unoccupied: : The room where the controller is placed is not used for an extended period, for example during holidays or long weekends. Both heating and cooling are disconnected within a temperature interval with configurable min/max temperatures (FS min=15 C, max=30 C). Stand-by: The room is in an energy save mode and is not used at the moment. This can for example be during nights, weekends, evenings etc. The controller is prepared to change operating mode to Occupied if someone enters the room. Both heating and cooling are disconnected within a temperature interval around the applicable setpoint (FS heating setpoint value=-3 C, cooling setpoint=+3 C). Occupied: The room is in use and is therefore in a comfort mode. The controller regulates the temperature around a heating setpoint (FS=22 C) and a cooling setpoint (FS=24 C). Bypass: The temperature in the room is controlled in the same way as in operating mode Occupied. The output for forced ventilation is also active. Bypass is useful for example in conference rooms, where many people are present at the same time for a certain period of time. When Bypass has been activated by a press on the Occupancy button, the controller will automatically return to the preset operating mode (Occupied or Stand-by) after a configurable time (FS=2 hours). If an occupancy detector is used, the controller will automatically return to the preset operating mode after 10 minutes absence. Functions description Occupancy detector By connecting an occupancy detector, RC-C3DFOC can switch between Bypass and the preset operating mode (Occupied or Stand-by). The temperature is then controlled according to requirement, which saves energy and keeps the temperature at a comfortable level. EC fan control EC fan control is always activated in the STRA-17. The function can be activated in the control modes Heating, Heating/ Cooling via change-over, Heating/Cooling, Cooling and Cooling/Cooling. Control of electrical heater The function for a heating battery works in sequence with the change-over. The change-over function will then be used to switch between Summer and winter mode. In Summer mode, the STRA-17 will function as a Heating/ Cooling controller while, in winter mode, it will function as a Heating/Heating controller. The electrical heating battery will start only if the water heating battery cannot meet the heating demand. It is important to note that the STRA-17 doesn t have inputs for fan running status and heater overheat. These functions must instead be provided by a supervisory system. Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

3 Room controller STRA-17 Change-over function The STRA-17 has an input for change-over to operate with heating or cooling function. The input can be connected to s of type PT1000 and have the mounted so that it senses the temperature on the supply pipe to the coil. As long as the heating valve is more than 20 % open, or every time a valve exercise is performed, the difference between the media and room temperature will be calculated. The control mode will change depending on the temperature difference. As an alternative, a potential-free contact can be used. When the contact is open, the controller works with the heating function and, when it is closed, with the cooling function. Fan control RC-C3DFOC has a fan button. The speed is set with the fan button. When the fan button is pressed, the fan speed will step from the current speed to the next. The controller has the following positions: Auto Automatic control of the fan speed to maintain desired room temperature 0 Fan off I Manual position with low speed II Manual position with medium speed III Manual position with high speed. CO 2 control In control modes where VAV (Variable Air Volume) is chosen, dampers outputs are affected by the CO 2 level. On increasing CO 2 level the damper opens to increase the quantity of air, regardless of the temperature requirements of the controller. The damper starts opening when the CO 2 level exceeds CO 2 level for starting opening damper, and is fully opened at CO 2 level for fully opened damper. In operating modes Off and Unoccupied, the fan is stopped, regardless of the setting in the display. Dimensions Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

4 Description room controller STRA-17 Technical data Supply voltage Internal consumption Ambient temperature Storage temperature Ambient humidity Protection class Communication Modbus BACnet Communication speed Display Built-in temperature Material Weight Colour V AC, Hz 2.5 VA 0-50 C C Max 90% RH IP20 RS485 (EXOline or Modbus with automatic detection/change-over, or BACnet) MS/TP slave and master 8 bits, 1 or 2 stop bits. Odd, even (FS) or no parity. 9600, 19200, bps (EXOline Modbus and BACnet) or bps (BACnet only) LCD with background illumination NTC type, measuring range 0-50 C, accuracy +/-0.5 C at C casing Polycarbonate, PC 110 g Cover: Polar white RAL9010 Bottom plate: Light gray This product conforms to the requirements of the EMC Directive 2004/108/EC through product standards EN and EN RoHS This product conforms to the Directive 2011/65/EU of the European Parliament and of the Council. Inputs External room Change-over alt. potential-free contact Occupancy detector Condensation detector alt. window contact. PT1000-, 0 50 C. Suitable s is Fläkt Woods STRZ-05 PT1000-, C. Suitable is Fläkt Woods STRZ-15 Closing potential-free contact. Suitable detector is Fläkt Woods STRZ-09 Fläkt Woods condensation detector STRZ-16 alt. Window contact STRZ-38 resp. potential-free contact Outputs Valve actuator, alt. thermal actuator or On/Off actuator (UO1, UO2) Valve actuator Thermal actuator Valve actuator Thermal actuator On/Off actuator Damper actuators (UO3) EC fan Control Actuator exercise Terminal blocks 2 outputs 0 10 V, max 5 ma 2 outputs 24 V AC, max 2.0 A (time-proportional pulse output signal) 24 V AC, max 2.0 A 24 V AC, Max. 2.0 A Control Heating, cooling or VAV (damper) 1 output V DC EC fan S = 23 hours interval Lift type for cable cross-section 2.1 mm2 Setpoint settings via Regio tool or in the display Basic heating setpoint Basic cooling setpoint Setpoint displacement C C ± C (FS = ±3 C) Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

5 Valve and actuator STRZ-70 Actuator Technical data: - AC - AC/DC - For direct mounting with union nut (no tools required) - Two-wire connection - Position indication - Positioning time - Stroke - Degree of protection - Operation - Mounting position - Operation effect - Positioning force 230 V operating voltage, 2-position control signal AC/DC 24 V operating voltage, 2 position control signal or PDM 180 s 2.5 mm +/- 45 IP43, IP C Upright to horizontal 2.5W 100 N Valve Description, valve Type Δp max Lift height Thread Dn Kv STRZ-70-01/ kpa 2,5 mm Rp/R ½" m 3 /h STRZ kpa 2,5 mm Rp/R 3/4" m 3 /h STRZ kpa 2,5 mm Rp/R 1" m 3 /h Dimensions (mm) Thread ( ") Type DN A B C D E Rp R G Weight STRZ-70-01/ ,5 24,5 35 ½ ½ 3/4 0,28 STRZ ,5 24,5 35 3/4 3/4 1 0,33 STRZ ,5 24, ,42 KVS values Position Valve stroke [mm] STRZ-70-01/ STRZ STRZ Flow tolerance [+-%] Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

6 Valve sizing chart STRZ-70 q, m 3 /h (2) Dp q, kpa Dp q, bar Dp q, bar q, l/h Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

7 Accessories STRA-17 can be equipped with the following accessories, independent of application External temperature STRZ-05 Occupancy detector STRZ-09 Relay box (Required component) STRZ-14 Change-over STRZ-15 Condensation detector STRZ-16 Transformer STRZ-24 Input/output voltage 230/24 V Power VA 48 Protection PTC-protection WxDxH 77x123x70 Degree of protection IP44 Weight kg 1.2 Window contact STRZ-38 Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

8 Product code Room controller Room Controller (aa) 17 = STRA-17 (EC fan control, Fan speed switch, Display, Occupancy button) External temperature 1 = Room temperature 2 = Outdoor temperature 3 = Clamp-on Occupancy detector 1 = Wall mounted 2 = Ceiling mounted CO 2 1 = Active 0-10 V Execution ) Execution ) 1 = for wall mounting 2 = for duct mounting Change-over 1 = Standard (Clamp-on ) STRA STRZ-05-b STRZ-09-b STRZ-18-b-c STRZ-15-1 Condensation STRZ = Detection Transformer (24VAC, 60 VA) 1 = Wall mounted (IP44) Window contact (Magnetic contact) 1 = External (White) STRZ-24-1 STRZ-38-1 Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

9 Product code Actuator and Valve Siemens STRZ-70-bb-cc-0-1 Valve (bb) 00 = Without 01 = DN-15 (kvs ) female ½" valve inlet 02 = DN-20 (kvs ) female 3/4" valve inlet 03 = DN-25 (kvs ) female 1" valve inlet 11 = DN-15 (kvs ) Compression ring valve inlet 21 = DN-15 (kvs ) push-on valve ring inlet Valve actuator (cc) 00 = Without 02 = 24 V NC cable 1m 03 = 24 V NO cable 1m 04 = 230 V NC cable 1m 05 = 230 V NO cable 1m Adapter Siemens actuator Type of adapter 0 = Special 53 = Danfoss RA-N (RA2000) 54 = Danfoss RAVL 55 = Danfoss RAV 60 = TA-RVT 61 = Markaryd STRZ-71-1-cc Fläkt Woods 9385 GB Specifications are subject of alteration without further notice.

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