STRA-14 Room controller. Installation and maintenance manual.
Fläkt Woods
8710 GB 2016.09.08
9 (12)
Specifications are subject of alteration without further notice.
Parameter Settings
STRA-14 is delivered with a number of factory settings. To acquire the desired function, the controller must be adapted
to it’s 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 depressed 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 depressed the value
will start scrolling, first slowly and then with increasing speed in 3 – 4 steps with 2 – 3 seconds between steps.
WEGA Standard/WEGA Power, STELLA, NOVA
Parameter 307 is used to select nozzle for Normal air flow.
Hole setting 1
2
3
4
5
6
STELLA 0
23
40
59
75
100
WEGA Standard 0
21
38
56
73
100
WEGA Power 0
23
23
23
23
100
NOVA 0
21
38
56
73
100
Nozzle selection for air flow in Energy Saving Mode and Boost Mode is adjustable via parameter 306 and 308.
Energy Saving Mode is via Parameter 306, adjustable between nozzle selection 1-4.
Boost Mode is via Parameter 308, adjustable between nozzle selection 3-6.
The voltage x 10 for nozzle 2-5 has to be given in parameter 300-303. See table above for values for each nozzle for
different chilled beams (1 and 6 are fixed values.)
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. The parameter
menu is exited by pressing the Function button while in Exit.
Parameter list
The following parameters can be changed in the parameter menu (FS = Factory setting):
Parameter
number
Description
Values
Unit
FS STRA-14
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
9
Cooling Changeover difference temperature (Room
and media)
°C
3
10
Heating Changeover difference temperature (Room
and media)
°C
4
