STRA-14 Room controller. Installation and maintenance manual.
Fläkt Woods
8710 GB 2016.09.08
1 (12)
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, ac/-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
