flakt woods STRA-07 R Installation And Maintenance Manual

Room controller for fancoils

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STRA-07 Room Controller. Installation and maintenance manual.

Content STRA-07 for Fancoils

Installation preparations................................2

Controller/Display handling.........................5

Technical data..................................................5

Installation.......................................................6

Configuration..................................................6

Operating modes............................................7

Activation operating modes.........................7

Control states..................................................8

Actuators.........................................................9

Fan control.......................................................9

Forced ventilation/Condensation detector/

Frost protection..............................................10

Parameter settings.........................................10

Fläkt Woods

8713 GB 2014.04

Specifications are subject of alteration without further notice.

Table of Contents

Summary of Contents for flakt woods STRA-07 R

Page 1: Table Of Contents
STRA-07 Room Controller. Installation and maintenance manual. Content STRA-07 for Fancoils Installation preparations........2 Controller/Display handling......5 Technical data..........5 Installation............6 Configuration..........6 Operating modes..........7 Activation operating modes......7 Control states..........8 Actuators............9 Fan control............9 Forced ventilation/Condensation detector/ Frost protection..........10 Parameter settings.........10 Fläkt Woods 8713 GB 2014.04 Specifications are subject of alteration without further notice.
Page 2 STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Installation instruction Ensure that the installation complies with local safety regulations. Information about commissioning of the product can be found in the manual ”STRA Manual”, which is available for download from www.flaktwoods.com. ...
Page 3 STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Wiring STRA-07 has been constructed to be as compact as possible. Therefore, the controller’s communication input is not galvanically separated from the supply voltage. This means that it is important to keep G and G0 in order, as well as the communication input’s A and B.
Page 4 STRA-07 Room Controller. Installation and maintenance manual. Terminal Designation Operation Supply voltage 24 V AC Supply voltage 0 V For forced ventilation, low speed. 24 V AC output, max 0,5 A. 24 V AC actuator is connected between terminal 12 and terminal 20, GDO.
Page 5 STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Plug-in of relay-box STRZ-14 to fan coil unit Plug-in of condensation detector Plug-in of relay-box STRZ-14 to STRA-07 QFDK, mounted in ceiling Fläkt Woods 8713 GB 2014.04 Specifications are subject of alteration without further notice.
Page 6: Controller/Display Handling
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Display handling Set point The display has the following indications: In Occupied mode, the controller operates from a heating setpoint (FS = 22°C), or a cooling setpoint (FS = 24°C) that ...
Page 7: Technical Data
STRA-07 Room Controller. Installation and maintenance manual. 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 8 bits, 1 or 2 stop bits.
Page 8: Configuration
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Display: the background lighting is lit (dimmed), and the Configuration occupancy indication is shown (see the chapter Display The controllers are configured via the display through handling). The current room temperature (or setpoint setting the required parameters.
Page 9: Control States
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils • Cooling/Cooling Shutdown For the control states, UO1 is used for the left control When the Occupancy button is held depressed for more function and UO2 is used for the right control function. than 5 seconds, the controller changes operating mode to For control states where only one control function is ”Shutdown”...
Page 10: Actuators
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Thermal actuators When thermal actuator control has been selected, this is controlled digitally with time proportional pulses via output UO…. By pulsing, the opening degree of the actuator (and its valve) is varied. The period time (in seconds) is the sum of the on and off output times on the output.
Page 11: Fan Control
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Manual setting of speed I-III means that the speed of the Fan control fan in operating modes Stand-by, Occupied and Bypass In STRA-07 it is possible to control a fan at the following is always the set speed.
Page 12: Forced Ventilation/Condensation Detector/Frost Protection
STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Functions description Parameter Settings STRA-07 is delivered with a number of factory settings. Change-over To acquire the desired function, the controller must be adapted to it’s specific application. This is done Change-over is a function for installations with 2-pipe through the parameter menu in the display.
Page 13 STRA-07 Room Controller. Installation and maintenance manual. STRA-07 for Fancoils Quick guide to Fläkt Woods standard applications: Desired basic heating setpoint: Desired basic cooling setpoint: Application control state: Type of temperature sensor: State of function UO1 (heating output): State of function UO2 (cooling output): State output signal range, heating actuator: State output signal range, cooling actuator: Preset operating mode:...
Page 14 STRA-07 Room Controller. Installation and maintenance manual. Parameters The following parameters can be changed in the parameter menu (FS = Factory setting): Parameter number Description Values Unit FS STRA-07 Function of UO3 Signal 0=None, 1=Forced Vent Digital, 2=Forced Vent 3 Step Analog, 3=None, 4=Ordinary Analog output, 5=None,...
Page 15 STRA-07 Room Controller. Installation and maintenance manual. Parameters The following parameters can be changed in the parameter menu (FS = Factory setting): Parameter number Description Values Unit FS STRA-07 Fan Speed 3 Limit Fan Start/Stop Hyst Fan Speeds External Temperature Sensor Calibration Gain AI1 ...
Page 16 STRA-07 Room Controller. Installation and maintenance manual. Parameters The following parameters can be changed in the parameter menu (FS = Factory setting): Parameter number Description Values Unit FS STRA-07 VAV CO2 Minimum Limit VAV CO2 Maximum Limit Port Mode 0=EXOline/Modbus, ...