flakt woods STRA-24 Guide

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 1 (12) Specifications are subject of alteration without further notice.
STRA-24 for chilled beams
STRA-24 is the room controller for the pressure independent (Pi)
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
CO2 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

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 2 (12) Specifications are subject of alteration without further notice.
Installation instructions
Ensure that the installation complies with local safety regulations.

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 3 (12) Specifications are subject of alteration without further notice.
Wiring diagrams
Connection diagram for STRZ-05, STRZ-18, STRZ-09,
STRZ-70, IQAZ-23 and window contact STRZ-38
Connection diagram for STRZ-05, STRZ-18, STRZ-09,
STRZ-70, IQAZ-23 and condensation sensor STRZ-16
Controller handling
In Occupied mode, the controller operates from a heating
setpoint (FS = 22°C), or a cooling setpoint (FS = 24°C) that
can be changed using the INCREASE and DECREASE
buttons.
Pressing on INCREASE increases the current setpoint by
0.5°C with each press up to the max. limit (FS = +3°C).
Pressing on DECREASE decreases the current setpoint by
0.5°C with each press down to the min. limit (FS = -3°C).
Switching between heating and cooling setpoints is done
automatically in the controller depending on the heating
and cooling requirement.
Display
The display has the following indications:
Function button
By pressing the Function button for less than 5 seconds
when the controller STRA-24 is in the preset operating
mode (parameter 45, FS = 3 = Occupied), the controller
changes the operating mode to Boost. If you press the
button for less than 5 seconds when the controller is in
Boost, it changes operating mode to the preset operating
mode.
When the Function button is held pressed down for more
than 5 seconds, the controller changes operating mode
to ”Unoccupied”, regardless of the current operating
mode. If you press the button for less than 5 seconds in
Unoccupied mode, the controller returns to Boost (for
60 minutes, which is a preset time that can be changed
though adjusting parameter 12).
Operating modes for WEGA and NOVA
chilled beams
• Bypass = Boost mode
• Occupied = Normal mode
• Unoccupied = Energy saving mode

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 4 (12) Specifications are subject of alteration without further notice.
Wiring
STRA-24 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.
All units that share the same transformer and communication loop must use the same transformer-pole for G (terminal
10) and G0 (terminal 11). On the communication loop the A-terminal (terminal 42) should only be connected to another
A-terminal and the B-terminal (terminal 43) to another B-terminal. Otherwise, there is great danger of short-circuit with
damaged components as a result.
Terminal Designation Operation
10 G Supply voltage 24 V AC
11 G0 Supply voltage 0 V
12 - 14 No function.
20 GDO 24 V AC out common for DO. Internally connected to terminal 10, G.
21 G0 0 V common for UO. Internally connected to terminal 11, G0.
22 UO3
Control output ventilation.
3 put analog (FS). The valve actuator’s 0…10 V control signal terminal is connected to terminal 22 and its supply
terminals to terminals 10 and 11. Make sure that the reference pole G0 is connected to the correct terminal on
the actuator.
23 UO1
Control of heating.
For 0...10 V DC valve actuator, max 5 mA. The valve actuator’s 0…10 V control signal terminal is connected to
terminal 23 and its supply terminals to terminals 10 and 11. Make sure that the reference pole G0 is connected
to the correct terminal on the actuator.
alternative
For 24 V AC thermal actuator, max 2,0 A (FS). The thermal actuator is connected between terminals 23 and 20,
GDO.
24 UO2
Control output cooling.
For 0...10 V DC valve actuator, max 5 mA. The valve actuator’s 0…10 V control signal terminal is connected to
terminal 24 and its supply terminals to terminals 10 and 11. Make sure that the reference pole G0 is connected
to the correct terminal on the actuator.
alternative
For 24 V AC thermal actuator, max 2,0 A (FS). The thermal actuator is connected between terminals 24 and 20,
GDO.
30 AI1 For external room sensor, PT1000. Measuring range 0...50°C. Sensor is connected between terminals 30 and
41, AGnd.
31 AI2 For 0-10V CO 2 sensor input.
32 DI1
Occupancy detector. A potential-free contact is connected between terminals 32 and 40, +C. Closed contact
corresponds to occupancy.
See also section Occupancy detector in the chapter Operating modes.
33 DI2/CI
Fläkt Woods condensation detector STRZ-16 (FS). The sensor is connected between terminals 33 and 41, AGnd.
alternative
Window contact (DI). A potential-free contact is connected between terminals 33 and 40, +C. Closed contact
indicates closed window.
40 +C 24 V DC out common for DI and UI (with digital function)
41 AGnd Analogue ground, reference for AI and UI (with analogue function)
42 A RS485-communication A
43 B RS485-communication B

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 5 (12) Specifications are subject of alteration without further notice.
Operating modes
STRA-24 has five different operating modes. Through
the Function button you are able to switch between three
of them. These are set through the parameter menu
(parameter 45) in the display. Occupied is the preset
mode.
Off
Operating mode Off means that the controller is switched
off, i.e. heating and cooling are disabled. However,
the temperature may not drop below the set minimum
temperature (parameter 6, FS = 8°C). If it does, the
controller will start heating. The background lighting
on the display is not lit, and only OFF is shown in the
display.
Airflow will be a non-presences airflow, V0, which is set
on the actuator.
Unoccupied (Energy Saving Mode)
Operating mode Unoccupied is an energy saving mode.
It means that the room where the controller is placed
is not used for an extended period of time, for example
during evenings, nights or weekends. The controller is
prepared to change the operating mode to Occupied if
someone enters the room (occupancy detector is needed
to use this feature). Both heating and cooling are disabled
within a temperature interval with configurable min/max
temperatures (parameter 4 respectively 5, FS min = 19°C,
max = 27°C).
Airflow will be a non-presences airflow, V0, which is set
on the actuator. However if the cooling water valve is
fully open and there is still a need for more cooling, the
airflow will increase to Vmin and then linearly up to Vmax
if required.
The background lighting on the display is not lit, but the
current room temperature (or setpoint value depending
on the configuration) is shown in the display. OFF is
shown in the display for this operating mode as well.
Standby (Energy Saving Mode)
Operating mode Standby means that the room is in an
energy saving mode and is not used at the moment.
This can be during evenings, nights, weekends etc. The
room temperature is controlled around the applicable
heating and cooling setpoint values, with an extended
temperature interval (FS = +/-3°C).
Airflow will be a non-presences airflow, V0, which is set
on the actuator. However if the cooling water valve is
fully open and there is still a need for more cooling, the
airflow will increase to Vmin and then linearly up to Vmax
if required.
For example, if the heating setpoint value is 22°C and the
cooling setpoint value is 24°C, the controller will allow
the temperature in the room to be between 19°C and 27°C.
Local adjustment of setpoint value via the display on
STRA-24.
The background lighting on the display is lit (dimmed)
and STANDBY with the current room temperature (or
setpoint value depending on the configuration) are
shown in the display. For more information , see Section
Occupancy detector, page 6.
Occupied (Normal Mode)
Operating mode Occupied means that the room is in
use and is therefore in a comfort mode. The controller
regulates the room temperature around a heating
setpoint value and a cooling setpoint value (parameter 1
respectively 2, FS heating setpoint value = 22°C, cooling
setpoint value = 24°C). Airflow will be on a presences
airflow, Vmin, which is set on the actuator. However if the
cooling water valve is fully open and there is still a need
for more cooling, the airflow will increase linearly from
Vmin up to Vmax if required. The setpoint values can also
be adjusted +/-3°C locally via the display, or via a central
command.
The background lighting on the display is lit (dimmed),
and the occupancy indication is shown (see Section
Display, page 3). The current room temperature (or
setpoint value depending on the configuration) is shown
in the display.
Bypass (Boost Mode)
Operating mode Bypass means that the controller controls
the room temperature in the same way as in operating
mode Occupied. For the chilled beam this activates the
output for forced ventilation and the air flow goes to Vmax
airflow which is set on the actuator. After a configurable
time (parameter 12, FS = 60 minutes) the controller
automatically returns to the preset operating mode. Boost
is normally activated when the Occupancy button is
pressed or a central command. The operating mode is
useful for example in conference rooms where many
people are present at the same time during a limited
period of time.
The background lighting on the display is lit (dimmed).
The occupancy indication and the symbol for forced
ventilation are shown (see Section Display, page 3). The
current room temperature (or setpoint value depending
on the configuration) is shown in the display.
Activation of operating modes
Preset operating mode
Occupied is the preset operating mode. Configuration of
desired operating mode is done in the parameter menu
on the display (parameter 45). The operating mode is
changed at following events:
• When the Occupancy button is pressed.
• Activation/deactivation of an occupancy detector.
• Via central control, for example central time control,
central booking system etc.

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 6 (12) Specifications are subject of alteration without further notice.
Function button
Shutdown (Off or Unoccupied)
When the Function button is held pressed down
for more than 5 seconds, the controller changes
operating mode to ”Shutdown” that can be ”Off” or
”Unoccupied”, regardless of the current operating mode.
The activation of operating modes, Off or unoccupied can
be configured via display. The factory setting is activating
”Unoccupied”.
If you press the Function button for less than 5 seconds
when the controller is in Shutdown or preset operating
mode, the controller changes to Boost operating mode.
If you press the button for less than 5 seconds when the
controller is in Boost, it changes operating mode to the
preset operating mode.
After a configurable time in Boost (FS = 60 minutes), the
controller returns to the preset operating mode.
Occupancy detector
For local control of the operating mode regarding
presence in the room, an STRZ-09-1 occupancy detector is
connected.
At occupancy control, parameter 45 should be changed
from preset operating mode to 1 = Unoccupied and
parameter 17 changed to 3. Then the function in
illustration below is attained where the controller at
activated occupancy detector shifts to the Occupied
operating mode. When the occupancy detector is
deactivated, the controller returns to Unoccupied
operating mode (to attain energy efficiency).
Control states
The controllers can be configured for different control
states/control sequences (Parameter 11, FS = 4 = Heating/
Cooling with VAV-control and forced ventilation):
• Heating (UO1)
• Heating/Heating (UO1/UO2)
• Heating/Cooling
• Heating/Cooling with VAV-control and forced
supply air function (UO1/UO2/UO3)
• Heating/Cooling with VAV-control (UO1/UO2/UO3)
• Cooling (UO1)
• Cooling/Cooling (UO1/UO2)
Heating
In control state Heating, the unit is always a heating
controller and controls according to the heating setpoint
plus/minus the setpoint displacement. The setpoint can be
adjusted in the display.
Heating/Heating
Split output signal
In control state Heating/Heating, the controller is always
a heating controller and controls according to the basic
heating setpoint plus the setpoint displacement. When
the controller output signal reaches 50%, it is divided
between two actuators. 0…48% of the signal is sent to
actuator 1 and 52…100% of the signal is sent to actuator 2.
See the figure below.
Heating/Cooling
In control state Heating/Cooling, the controller functions
as a heating controller when the room temperature is
lower than the basic heating setpoint plus half the neutral
zone. The neutral zone is the difference in temperature
between the heating setpoint and the cooling setpoint.
When the room temperature exceeds this limit, the
controller becomes a cooling controller. There is a
hysteresis of 0.1°C when the controller changes from
heating to cooling controller and vice versa. When the
controller is heating, it regulates according to the basic
heating setpoint plus the setpoint displacement, and
when it is cooling according to the basic cooling setpoint
plus the setpoint adjustment.

STRA-24 Installation and commissioning manual
Fläkt Woods 9585 GB 2015.12.16 7 (12) Specifications are subject of alteration without further notice.
Cooling
In control state Cooling, the unit is always a cooling
controller and controls according to the basic cooling
setpoint plus the setpoint displacement.
Cooling/Cooling
Split output signal
In control mode Cooling/Cooling, the controller always
functions as a cooling controller and controls according to
the basic cooling setpoint plus the setpoint displacement.
When the controller output signal reaches 50%, it is
divided between two actuators. 0…48% of the signal is
sent to actuator 1 and 52…100% of the signal is sent to
actuator 2. See the figure below.
CO2 control
Fläkt Woods STRZ-18-1-1 is an active CO2 detector
(0-10V). This accessory provides the functionality that
the controller changes the airflow linearly between Vmin
and Vmax. The nozzle setting is increased when the PPM
level is in excess of the parameter 112 value (500 ppm)
and reaches the maximum nozzle setting (parameter
305) when the ppm level is in excess of paramater 113
(1000 ppm). Heating/cooling control (PI) is preformed
simultaneously with the CO 2 control and if a cooling or
heating need occurs the signal is directed to respectively
output (UO1 and UO2). Parameter 81 should be set to 5 in
order to activate the CO2 function.
Free cooling
In normal operation, the cooling sequence prioritize to use
water cooling, i.e. output UO2 where the water cooling
valve is connected. If the water cooling is not enough
to reach the setpoint, the airflow is increased linearly
between Vmin and Vmax. Thus cooling sequence is divided
in 2 steps, 0-50% is water cooling and 51-100% is air
cooling. Sometimes you get free cooling by air, if outside
temperature is cooler than the setpoint room temperature.
Then the STRA-24 can shift the sequence so that 0-50% is
air cooling and 51-100% is water cooling. This is adjusted
by changing the parameter 309.
309 = 0 - Free cooling off – Water cooling 0-50% and
51-100% air cooling
309 = 1 - Free cooling on – Air cooling 0-50% and 51-100%
water cooling
Free cooling can also be turned on and off through
Modbus communication.
Figure 1: Cooling sequence without free cooling
Figure 2: Cooling sequence with free cooling
Actuators
STRA-24 can be used with two types of actuators:
• Analogue 0…10 V actuators
• Thermal actuators
The actuator type is set via the parameter menu in the
display (parameter 20 and 21). Note that an adapter might
be needed if another actuator than Fläkt Woods STRZ-71
is used.

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Analogue actuators
The following output signals can be set for analogue
actuators:
• 0…10 V (FS)
• 2…10 V
• 10…2 V
• 10…0 V
Thermal actuators
When thermal actuator control has been selected, this
is controlled digitally with time proportional pulses via
universal outputs (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. The period time is
FS=60s. The controller varies the on and off output times
proportionally depending on the output signal demand to
the actuator.
Actuator exercise
All actuators are exercised. The exercise takes place at
set intervals in hours (FS=23 hours interval). An opening
signal is sent to the actuator for as long time as the run
time has been configured. Then a closing signal is sent for
as long time and the exercise is finished.
Condensation detector
There is a special input (CI) on STRA-24 controllers. This
input is intended for Fläkt Woods condensation detector,
STRZ-16, and functions internally as a digital input, i.e.
condensation or no condensation.
When the condensation detector is activated, the cooling
control is blocked and the controller is set in neutral
position. When condensation ceases, the controller will
start controlling from the neutral position.
Window Contact
When the window contact has been configured, the
regulator is set to normal operation when window is
closed. If the window is open, the regulator is set in off
mode, heating and cooling outputs are set to 0 V and the
frost protection function is activated.
Frost protection
STRA-24 has built-in frost protection, which is activated
when the controller is not in use. The frost protection
prevents the temperature from dropping below
8°C. Return to normal fan speed and control occurs
automatically when the room temperature exceeds 8°C.
Control the light with an occupancy sensor
It is possible to control the operation of the light with
an occupancy sensor through a relay and its socket
(STRZ-73-b). The light will switch off when the room
is unoccupied. The socket for wiring is screwless quick
connection.
Parameter 60 should be changed to 1 when using this
function.
Wiring diagram:

STRA-24 Installation and commissioning manual
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Parameter Settings
STRA-24 is delivered with a number of factory settings. To acquire the desired function, the controller must be
adapted to its specific application. This is done through the parameter menu in the display. Applications may vary and
incorrectly set parameters can effect the controller and application negatively. Be sure to set the necessary parameters
relevant for your application. If you experience problems, contact Fläkt Woods TSS controls.
Parameter menu
It is possible to set different parameter values in a parameter menu. The parameter menu is accessed by simultaneously
holding the INCREASE and DECREASE buttons pressed for about 5 seconds and then pressing the INCREASE button
twice. The Service indication will be displayed.
First the display will show the parameter number 1. Scroll between parameters by using the INCREASE and DECREASE
buttons.
Press the Function button to select the desired parameter. The parameter number will be replaced by the parameter
value. The value can be changed using the INCREASE and DECREASE buttons. If a button is held pressed, the value
will start scrolling, first slowly and then with increasing speed in 3 – 4 steps with 2 – 3 seconds between steps.
Acknowledge/Regret
To acknowledge and store a set parameter value, press the Function button again, the display then returns to showing
the parameter number. To retrieve the original value, i.e. the value before change, press the INCREASE and DECREASE
buttons at the same time. The original value is shown on the display.
Return
After a certain time, about 1 minute, or when the INCREASE and DECREASE buttons are pressed at the same time while
in the menu, the display returns to the normal view. Exit is shown on the display after the last parameter (or before first
parameter). The parameter menu is exited by pressing the Function button on the Exit choice in parameter menu.
Parameter list
Table 1: The following parameters can be changed in the parameter menu (FS = Factory setting):
Parameter
number Description Values Unit FS STRA-24
1 Occupied Heating Setpoint °C 22
2 Occupied Cooling Setpoint °C 24
3 Standby Neutral Zone °C 3
4 Unoccupied Heating Setpoint °C 19
5 Unoccupied Cooling Setpoint °C 27
6 Frost protection Setpoint °C 8
7 P-Band °C 10
8 I-Time Seconds 300
9Cooling Changeover difference temperature (Room
and media) °C 3
10 Heating Changeover difference temperature (Room
and media) °C 4
11 Heating/Cooling Functions
0 = Heat,
1 = Heat/Heat,
2 = Heat or Cool via changeover,
3 = Heat/Cool,
4 = Heat/Cool with VAV and forced
ventilation,
5 = Heat/Cool with VAV,
6 = Cool,
7 = Cool/Cool,
8 = Heat/Cool with UO3,
9 = Heat/Cool with Change-Over
8
12 Boost Mode Timer Minutes 60
13 P.I.R Delay Off Minutes 10
14 P.I.R Delay On Minutes 0
15 Connected sensor on AI1
0 = internal,
1 = external,
2 = Change over sensor
0
16 UI1 Signal
0 = Disabled,
1 = Change over sensor digital,
2 = Change over sensor analogue
2

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Parameter
number Description Values Unit FS STRA-24
17 Connected sensor DI1
0 = Disabled,
1 = Window contact,
3 = P.I.R,
4 = Change over sensor
0
18 Connected sensor DI2
0 = Disabled,
1 = Window Contact,
2 = Condensation Sensor,
4 = Change over sensor
0
20 Function of UO1 Signal
0 = None,
1 = Thermal actuator heating,
2 = None,
3 = Heating actuator 0...10V,
4 = None,
5 = On/off actuator heating,
6 = None
1
21 Function of UO2 Signal
0 = None,
1 = None,
2 = Thermal actuator Cooling,
3 = None,
4 = Cooling actuator 0…10V,
5 = None,
6 = On/off actuator cooling
2
22 Function of UO3 Signal
0 = None,
1 = Forced Vent Digital,
2 = Forced Vent 3 Step Analog,
3 = None,
4 = Ordinary Analog output,
5 = None,
6 = Control of EC-fan
4
24 UO3 output in manual mode % 0
28 Actuator type for UO3
0 = 0-10v,
1 = 2-10v,
2 = 10-2v,
3 = 10-0v
0
29 Heating Modulating Actuator Control
0 = 0-10v,
1 = 2-10v,
2 = 10-2v,
3 = 10-0v
0
30 Cooling Modulating Actuator Control
0 = 0-10v,
1 = 2-10v,
2 = 10-2v,
3 = 10-0v
0
31 Heating Thermal Actuator Time Seconds 60
32 Cooling Thermal Actuator Time Seconds 60
33 Travelling Time for Increase/Decrease Heating Valve
(Not in use) Seconds 120
34 Travelling Time for Increase/Decrease Cooling Valve
(Not in use) Seconds 120
35 Increase/Decrease NZ (Not in use) % 0
36 Heating Valve Periodic Exercise Interval 0 = Inactive Hours 23
37 Cooling Valve Periodic Exercise Interval 0 = Inactive Hours 23
38 Hysteresis for the heating thermostat function K 2
39 Hysteresis for the cooling thermostat function K 2
40 The minimum heat output in heating mode % 0
41 Fan runs on low speed (Not in use) 0
42 Display View
0 = Actual Temp Value,
1 = Heating Setpoint,
2 = Cooling Setpoint,
3 = Average of Heating/Cooling,
4 = Only Setpoint Displacement,
5 = CO2,
6 = Heating Setpoint + Setpoint
Displacement,
7 = Cooling Setpoint + Setpoint
Displacement,
8 = Average of Heating/Cooling
Setpoints + Setpoint Displacement,
9 = Calculated flow in l/S
0
43 Highest Setpoint Offset Increase °C 3
44 Lowest Setpoint Offset Decrease °C 3
45 Normal Mode Function
0 = Off,
1 = Unoccupied,
2 = Standby,
3 = Occupied
3
46 Energy Saving Mode Function 0 = Off,
1 = Unoccupied 1

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Parameter
number Description Values Unit FS STRA-24
47 BMS Operating Mode
0 = Off,
1 = Unoccupied,
2 = Standby,
3 = Occupied,
4 = Not Used,
5 = No Remote control
5
48
Minimum airflow on cooling UO2 in % of 0-10V.
Parameter is in use when cooling/heating mode with
VAV is selected
% 20
49
Maximum airflow on cooling UO2 in % of 0-10V.
Parameter is in use when heating/cooling mode with
VAV is selected
% 0
50 Fan Control (Not in use)
0 = No Control,
1 = Heating,
2 = Cooling,
3 = Both
51 Fan Speed 1 Limit (Not in use) %
52 Fan Speed 2 Limit (Not in use) %
53 Fan Speed 3 Limit (Not in use) %
54 Fan Start/Stop Hyst (Not in use)
55 Fan Speeds
56 External Temperature Sensor Calibration Gain AI1 °C 0
57 Sensor Calibration Gain UI1 °C 0
58 Internal Temperature Sensor Calibration Gain °C 0
59 Filter factor for AI temperature °C 0,2
60 Normally open/Normally closed DI1 0 = N/O,
1 = N/C 0
61 Normally open/Normally closed DI2 0=N/O, 1=N/C 1
62 Normally open/Normally closed UI1 0 = N/O,
1 = N/C 0
63 Heating Manual Override
0 = Off,
1 = Manual,
2 = Auto
2
64 Cooling Manual Override
0 = Off,
1 = Manual,
2 = Auto
2
65 Forced ventilation Manual Override
0 = Off,
1 = Manual,
2 = Auto
2
66 Changeover Manual Override
0 = Heating,
1 = Cooling,
2 = Auto
2
67 Manual Mode Heating Output % 0
68 Manual Mode Cooling Output % 0
69 Modbus Address
Set by production
(same as
EXOline ELA)
70 Modbus Parity
0 =None,
1 = Odd,
2 = Even
2
71 Modbus Timeout Milliseconds 3
72 Modbus Response Delay Milliseconds 5
73 Heating output 0 = For N/C-actuator,
1 = For N/O-actuator 0
74 HMI Displacement View
0 = The offset,
1 = The active setpoint + offset,
2 = The heating setpoint + offset,
3 = The cooling setpoint + offset,
4 = Occupied Heating Setpoint +
Offset,
5 = Occupied Cooling setpoint +
Offset,
6 = Occupied Average + Offset
0
75 Free Cooling 0 = Not Available,
1 = Available 0
76 Forced Ventilation control mode
0 = No Action,
1 = Forced on Heat/Cool output at
100%,
2 = Forced on Cool output at 100%
0
77 P.I.R Activated Operation Mode 3 = Occupied,
4 = Bypass 3
78 The Controller PLA Address. Used in EXOline Set by Production
79 The Controller ELA Address. Used in EXOline Set by Production
80 Cool output 0 = For N/C-actuator,
1 = For N/O-actuator 0

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Parameter
number Description Values Unit FS STRA-24
81 AI2 Input
0 = Disable,
5 = CO2,
7 = 0-100% ,
8 = Flow calculation,
9 = 0-10V
0
82 Flow at 0 volt on AI2 (Not in use) l/s
83 Flow at 10 volt at AI2 (Not in use) l/s
84 The minimum time the valve is open when the
calculation of change over is made Seconds 60
86 Alarm triggers when temperature falls below °C 15
87 Alarm triggers when temperature raise above °C 40
97 CO2 Level to Change to Boost Mode PPM 1200
98 CO2 Level below "Boost Mode CO2 Start" value to
start Boost Mode Timer countdown PPM 160
100 AI CO2 Filter 0,2
104 CO2 Sensor PPM for 0v PPM 0
105 CO2 Sensor PPM for 10v PPM 2000
112 VAV CO2 Minimum Limit PPM 500
113 VAV CO2 Maximum Limit PPM 1000
114 Port Mode 0 = EXOline/Modbus,
1 = BACnet 0
115 BACnet address Above 127 = Slave Set by Production
(Last 2 Digits of ELA)
116 BACnet device ID low 4 figures Set by Production
("A" of PLA & ELA)
117 BACnet device ID high 3 figures Set in Production,
uses "PL" of PLA
118 BACnet Max Master 127
119 Com Speed
Com bus speed:
0 = 9600,
1 = 19200,
2 = 38400,
3 = 76800 (BACnet)
120 Reset com to factory default (Modbus 9K6, 8, N, 1)
121 The lowest output the fan will need to start (Not in
use) V
122 The highest speed of the fan (Not in use) V
125 The Model in Regin Range
1939 = STRA-07,
1943 = STRA-04 / STRA-24,
1945 = STRA-14
Read Only 1943
126 Major Version
127 Minor Version
128 Branch Version
129 Revision
300 Voltage x 10 for nozzle 2 % 21
301 Voltage x 10 for nozzle 3 % 38
302 Voltage x 10 for nozzle 4 % 56
303 Voltage x 10 for nozzle 5 % 73
304 Max air level at 100% cooling 5
305 Max air level at 100% CO26
306 Air level at Off, Unoccupied & Standby 1
307 Air level at Occupied mode 2
308 Air level Boost mode (Button only) 6
309 Free Cooling 0 = Not Available,
1 = Available 0
322 Type of STRA 0 = STRA-04 / STRA-24*,
1 = STRA-14 0
323 The floor the STRA is placed at 9999 = Not Used in IPSUM 0
324 The room the STRA is placed 9999 = Not Used in IPSUM 0
325 High 4 digits of the serial number
326 Mid 4 digits of the serial number
327 Low 4 digits of the serial number
328 Legacy Mode, set to = to use the old wiring terminal
order
0=Air on Pin 24, Boost on Pin 22,
1=Air on Pin 22, Boost on Pin 24 1
Note: * additional parameter setting required; P11=8, P21=2, P22=4, P28=0, P48=20, P76=0, P328=0