STRA-14 Room controller. Installation and maintenance manual.
Fläkt Woods 8710 GB 2016.09.08
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Specifications are subject of alteration without further notice.
STRA-14 for chilled beams
STRA-14 is the room controller for the motorised energy control
(MEC) and constant air volume chilled beams
It is possible to set different parameter values in a parameter menu
in the display, using the buttons on the controller. You change
parameter values with the INCREASE and DECREASE buttons and
confirm changes with the Function button.
Technical data
Supply voltage 18...30 V AC, 50...60 Hz
Internal consumption 2.5 VA
Ambient temperature 0...50°C
Storage temperature -20...+70°C
Ambient humidity Max 90% RH
Protection class IP20
Communication RS485 (EXOline or Modbus) with automatic detection/change-over
Modbus - Bacnet - MSTP 8 bits, 1 or 2 stop bits. Odd, even (FS) or no parity.
Communication speed 9600 bps (not changeable)
Built-in temperature sensor NTC type, measuring range 0...50°C, accuracy +/-0.5°C at 15...30°C
Material, casing Polycarbonate, PC
Weight 110 g
This product conforms with the requirements of European EMC standards CENELEC EN 61000-6-1 and EN
61000-6-3, and the requirements of European LVD standard IEC 60 730-1. It carries the CE mark.
Inputs
External room sensor PT1000-sensor, 0…50°C. Suitable sensor is Fläkt Woods STRZ-05
Occupancy detector Closing potential-free contact. Suitable occupancy detector is Fläkt Woods STRZ-09.
Condensation detector alt.
window contact
Fläkt Woods condensation detector STRZ-16 alt. window contact STRZ-38 resp.
potential-free contact
CO
2
sensor
STRZ-18 (0-10V).
Outputs
Forced ventilation 24 V AC actuator, max 0.5 A
Valve actuator alt. thermal
actuator
2 outputs
Valve actuator 0…10 V DC, max 5 mA
Thermal actuator 24 V AC, max 2.0 A
Control Heating or cooling
Actuator exercise FS = 23 hours interval
Terminal blocks So-called lift type for cable cross-section 2.1 mm2
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