FläktGroup VEKA ver C User manual

INTEGRATED CONTROL EQUIPMENT ISYTEQ MINI
VEKA ver C™
SUPPLY AIR UNIT

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Page
1.. ELECTRICAL CONNECTIONS
1.1 Motors .................................................................................................... 3
1.2 Electrical Post heater...................................................................... 3
1.3 Main supply......................................................................................... 3
1.4 Connection of control panel...........................................................4
2. CONNECTION OF EXTERNAL COMPONENTS
2.1 Electrical Post heater...................................................................... 5
2.2 Post heater, hot water.................................................................... 5
2.3 Cooling coil, water........................................................................... 5
2.4 Cooling coil, DX ................................................................................. 5
2.5 Damper................................................................................................. 5
2.6 Temperature sensors..................................................................... 5
2.7 Extended/Forced Ventilation....................................................... 6
2.8 Fire protection function.................................................................. 6
2.9 Summary alarm................................................................................ 6
2.10 External exhaust fan..................................................................... 6
2.11 Filter guard ........................................................................................ 6
3. WIRING DIAGRAM...........................................................................................7
Page
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
4.1 General ................................................................................................ 10
4.2 Home screen..................................................................................... 11
4.3 Sub menus.........................................................................................13
4.4 Date and time, language ..............................................................14
4.5 Advanced Settings for installers
and service personnel..................................................................15
4.6 Commissioning Wizard............................................................... 16
4.7 Schedules .......................................................................................... 19
5. CONTROL FUNCTIONS
5.1 Heating and Cooling ......................................................................22
5.2 Temperature controls...................................................................22
5.3 Freeze protection...........................................................................23
5.4 Fan control........................................................................................23
6. COMMUNICATION
6.1 Modbus, RS485 ...............................................................................24
6.2 Modbus, TCP/IP..............................................................................24
6.3 Webserver ........................................................................................24
7. PARAMETER LIST.........................................................................................25
8. DECLARATION OF CONFORMITY.............................................................30
INNEHÅLL

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1. ELECTRICAL CONNECTIONS
1.1 MOTORS
Size Power, kW Current, A Voltage, V
20 0,77 kW (0,385 kW x 2) 5 A (2,5 A x 2) 1 x 230 V
30 1,50 kW (0,75 kW x 2) 6,6 A (3,3 A x 2) 1 x 230 V
1.2 ELECTRICAL POST HEATER
Size Power, kW Current, A Voltage, V
20 913 3 x 400 V
20 15 22 3 x 400 V
20 21 30 3 x 400 V
30 24 35 3 x 400 V
1.3 MAIN SUPPLY
NY BILD!
The main supply cable must be fitted with an external safety
switch located close to the unit.
Ambient temperature 0 - 40 °C.
Main supply 1 x 230 V.
Fuse 10 A.
1
2
4
3
1. Control board
2. Transformer 230/24 V
3. Terminals
4. Fuse, 24 V, 4 A

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1. ELECTRICAL CONNECTIONS
1. Open the control panel using a screwdriver.
1.4 CONNECTION OF CONTROL PANEL
The control panel is connected when delivered from factory and
provided with a magnet for easy handling. For wall mounting see
below.
2. Lift the display out of the enclosure.
3. Push the connection cable through a suitable hole and if
needed make an outlet for the cable in the side of the cover.
4. Mount the enclosure directly on the wall.
5. Connect the cable to the back of the display as shown above.
Note. Please do not touch the electronics.
6. Push back the display in the enclosure.
NOTE! The control panel is only for indoor use.

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2.1 ELECTRICAL POST HEATER
Duct mounted. Separate supply 3 x 400V.
Connect alarm, start and control signal to the control box. The unit
is preconfigured for electrical post heater.
Component Designation Connection Remark
Electrical
heater
CP1/SK1
Heating
1 - 2
C - NO Start signal
ALM CP1 25 - 261) Alarm, overheating (NC)
SV1 CTRL 21 - 22
Y - M Control signal 0-10 V
Supply 3 x 400 V Not from the unit
1) Connects directly to the control board.
2.2 POST HEATER, HOT WATER
Circulation pump (CP1) and valve actuator (SV1) connects
according to table below.
Component Designation Connection Remark
Circulation
pump CP1
CP1/SK1
Heating 1 - N - PE Pump supply
(230 V max 2A2))
CP1/SK1
Heating
2 - 3
NO - L1
Loop only with cir-
culation pump
ALM CP1 25 - 261) Voltfree alarm input
(NO, configurable)
Valve
actuator SV1 SV1 CTRL 21 - 22 - 23 - 24 Y - M - G - GO
1)
Connects directly to the control board.
2)
The current consumption for CP1 and CP2 is limited to 2 A.
A separate safety switch for the pump is needed if it is a long
distance between the pump and the AHU.
2.3 COOLING COIL, WATER
Circulation pump (CP2) and valve actuator (SV2) connects
according to table below.
Component Designation Connection Remark
Circulation
pump CP2
CP2/DX
Cooling 4 - N - PE Pump supply (230 V max 2A2))
CP2/DX
Cooling
5 - 6
NO - L1
Loop only with
circulation pump
ALM
CP2/DX 39 - 401) Voltfree alarm input (NO, configurable)
Valve
actuator SV2 SV2 CTRL 25 - 26 - 27 - 28 Y - M - G - GO
1)
Connects directly to the control board.
2)
The current consumption for CP1 and CP2 is limited to 2 A.
A separate safety switch for the pump is needed if it is a long
distance between the pump and the AHU.
2. CONNECTION OF EXTERNAL COMPONENTS
2.4 COOLING COIL, DX
The unit can manage cooling DX, 1-step. Note that the coil is not
included in the delivery of the unit. For configuration see control
functions.
Component Designation Connection Remark
DX-cooling,
1-step
CP2/DX
Cooling
4 - 5
C - NO
Start: 10 %
Stop: 0 %
ALM CP2/DX 39 - 40 1) Voltfree alarm input (NO,
configurable)
1) Connects directly to the control board.
2.5 SPJÄLL
On/off actuator with spring return, 15 Nm, 24 VAC.
Component Designation Connection Remark
Damper ST1 29 - 30
G - GO
Exhaust air damper if used
is connected in parallel
(Maximum 2 dampers)
2.6 TEMPERATURE SENSORS
The unit is provided with:
Supply air sensor GT1, delivered separately. Duct mounting. Cable
not included.
Room temperature sensor GT2 (accessory) is supplied when the
unit is configured for room temperature control. The room sensor
is intended for wall mounting and needs to have good air circula-
tion and not direct sun light. Cable not included.
Outdoor air sensor GT3 (accessory) is supplied when the unit is
configured for outdoor air compensation. Duct mounting. Cable
not included.
Frost protection sensor GT5 is supplied when hot water coil is
used. Immersion sensor.
Component Designation Connection Remark
Supply air sensor GT1 46 - 471) Duct mounting
Room temperature
sensor GT2 50 - 511) Wall mounting
Outdoor air sensor GT3 48 - 491) Duct mounting
Frost protection
sensor GT5 52 - 531) Immersion sensor
1) Connects directly to the control board.
Use the control box on the outside of the unit to connect all exter-
nal accessories. For information about how to connect available
accessories see below.

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2. CONNECTION OF EXTERNAL COMPONENTS
2.7 EXTENDED / FORCED VENTILATION
For external electronic timer, push button, PIR or other volt free
contact. Electronic timer and/or PIR if ordered is supplied
separately. When using a push button the time has to be set in
the control panel.
Component Designation Connection Remark
Timer 1 TMR1 13 - 141)
Timer 2 TMR2 15 - 161)
1) Connects directly to the control board.
Function of aux. inputs Timer 1 (T1) and Timer 2 (T2) can be
selected according to the following tables.
TIMER FUNCTION 1 (DEFAULT)
Timer 1 Timer 2
Manual/Automatic Mode 0 0
Trickle 1 0
Normal 0 1
Boost 1 1
TIMER FUNCTION 2
Timer 1 Timer 2
Manual/Automatic Mode 0 0
Trickle 1 0
Boost 0 1
Stop 1 1
TIMER FUNCTION 3
Timer 1 Timer 2
Manual/Automatic Mode 0 0
Normal 1 0
Boost 0 1
Stop 1 1
TIMER FUNCTION 4
Timer 1 Timer 2
Stop 0 0
Manual/Automatic Mode 1 0
Stop 0 1
Boost 1 1
TIMER FUNCTION 5
Timer 1 Timer 2
Stop 0 0
Manual/Automatic Mode 1 0
Stop 0 1
Normal 1 1
2.8 FIRE PROTECTION FUNCTION
External fire alarm to stop the unit can be connected to terminals
in the control box. Smoke detectors and fire dampers cannot be
connected directly to the air handling unit, a separate fire system
is needed.
Component Designation Connection Remark
Fire protection
funcion FIRE 35 - 361) Voltfree contact (NC)
Looped at delivery
1) Connects directly to the control board.
2.9 SUMMARY ALARM
The alarm output can be configured to indicate A-alarms or both
A- and B-alarms.
Component Designation Connection Remark
Summary
alarm ALM 11 - 121) Voltfree contact
Maximum load 24 V, 200 mA
1) Connects directly to the control board.
2.10 EXTERNAL EXHAUST FAN
External exhaust fan (FF) with frequency converter connects
according to the following table.
Component Designation Connection Remark
External
exhaust
fan
Control signal 64 - 651)
Y - M
Alarm 23 - 241) Voltfree contact,
(NO, configurable)
1) Connects directly to the control board.
2.11 FILTER GUARD
Filter guard (GP1) connects according to the following table.
Component Designation Connection Remark
Filter guard GP1 17 - 181) Voltfree contact (NO)
1) Connects directly to the control board.

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3. WIRING DIAGRAM
Control Signal Supply Fan TF
Control Signal External Fan TF
Alt. 2 Control Signal
Electrical Heater
SV2 Actuator Cooling
Alt. 1 Actuator
Heating
Summary Alarm
(Max 24 V, 0,2 A)
Control Board
Digital Outputs (D0)
Analogue Outputs (A0)
Shut-off damper ST1
G 24 V
G0
G 24 V
G0
Modbus
RS485
Control Panel
Curo Touch
Ethernet
TCP/IP
12
DO4
RS485
Ethernet-
card
DO8
Reläkort
11
Ref
A
B
66
67
A01
64
65
A02
62
63
A03
58
59
A05
104
105 29 G0G30
21
25 27
26 28
22
Y
M
G
G0
Y
M
Y
M
Y
M
2321 Y
M
G
G0
22 24
Supply fan (2 parallel) Alt. 1 Start
Electrical Heater Alt. 1 Start
DX Cooling Outside unit
Not in Fläkt Woods delivery
External Safety Switch
(Accessory)
Alt. 2 Circulation pump
Heating
2)
Loop only with circulation pump
Alt. 2 Circulation pump
Cooling
(max 2 A totaly)
Main supply
1 x 230 V, 50 Hz
Fuse Protection 10A
Control Board
DO9
CP1/SK1
Start
Control Board
DO10
CP2/DX
Start
Supply
Control Board
230 V
24 V
Sid 2
TF
Q1
DX
SK1
TF
230 V
2 1
4 3
6 5
Brown Blue Yellow/Green Brown Blue
Brown Blue
Yellow/Green
(Electrical heater has separate supply)
T1
24 V
Control panel
ISYteq Touch 3.5

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3. WIRING DIAGRAM
Control Board
Digital Inputs (DI)
Analogue Inputs (AI)
External Timer 1 TMR1
External Timer 2 TMR2 Alarm Circulation pump CP2/DX cooling
Alarm External Exhaust Fan FF
Alt. 1 Alarm
CP1 Heating
Alt. 2 Alarm
Electrical Heat.
Supply Filter Alarm GP1
Fire Alarm Alarm Supply Fan TF (Fan 1)
Alarm Supply TF (Fan 2)
GT5 Freeze Protection Sensor
Supply Air Temp. GT1
Outdoor Air Temp. GT3
Room Temp. GT2
DI1
13 25
26
DI7
14
DI2
15 39
40
DI10
16
DI3
17 23
24
DI10
18
DI8
35 21
22
DI5
36
AI1
46 52
Brun
Vit
Brun
Vit
M
B
M
B
M
B
M
B
C
NO
C
NO
C
C
NO
NC
C
NO
C
NO
C
C
NO
NC
C
NC
C
NC
Brun
Vit
Brun
Vit
53
AI4
47
AI2
48
49
AI3
50
51
24 V
Terminals
Safety Switch
(iAccessory)
Main Supply
Max 2A in total
Alt. 1 Supply CP1, 230 V Alt. 1 Supply CP2, 230 V
Y M G GO Y M G GO G GO
Alt. 2 MStart electrical heater. Volt free contact Alt. 2 Start DX-cooling. Volt free contact
SV1 CTRL, Valve actuator Heating
SV2 CTRL, Valve actuator Cooling
ST1, Shut-off damper
1
2
3
N
1
2
3
N
4
5
6
N
4
5
6
N
21
22
23
24
25
26
27
28
29
30
L1
N
25
1 x 230 V, 50 Hz
Fuse Protection 10 A
(Electrical Heater has separate supply)
CP1/SK1 START
1) Loop only with CP1, Alt. 1
CP2/DX START
2) Loop only with CP2, Alt. 1
2)1)
EXTERNAL CONNECTIONS DIAGRAM 230 V

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3. WIRING DIAGRAM
Connects directly to the control board
When using electrical
heater, the sensor has
to be fitted after the heater
ALM, Summary Alarm
(Max. 24V, 0.2 A)
TMR1, Ext. Timer input 1
NO
11 12 13 12 15 16 17 18
23
24
25
26
35
36
39
40
46
47
48
49
50
51
52
53
64
65
68 69 70
C NO C NO C NO C NO C NO C NC NO C B M B M B M B M Y M Ref A
B
TMR2, Ext. Timer input 2
GP1, Supply Filter Alarm
FF Ext. LExhaust Fan Alarm
CP1, Alarm Input Heating
FIRE, Fire Alarm Inout
(Looped at delivery)
GT1, Supply temp. Sensor
GT3, Outdoor air temp. sensor
GT5, FFreeze Protection sensor
FF, External Exhaust Fan, Control signal
MODB, Modbus RS485
GT2, Room temp. sensor
CP2, Alarm Input Cooling
C
Timer function 1 (Default)
Low speed 1 0
1
1
0
0
Normal speed
High speed
For other time functions, see manual.
TMR 1 TMR 2
EXTERNAL CONNECTIONS DIAGRAM 24 V

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4 CONTROL PANEL, OPERATIONS, COMMISSIONING
4.1 GENERAL
HMI
This section provides an introduction to the touchscreen LCD
control panel, also known as the ‘Human Machine Interface’, or
simply, HMI.
The HMI serves two main purposes: To provide information about
the current operational state of the unit. To allow the unit to be
setup and configured.
TOUCH SCREEN TIPS
To select an item, touch the center of the icon or option. Do not
press too hard, the touch screen is sensitive enough to pick up
light, firm touches. Use the tip of your finger or the back of a
pencil to touch the required option. Be careful not to touch any
other options.
CLEANING THE SCREEN
Disconnect the power cord. Gently wipe the screen with a soft,
dry non-abrasive cloth. If the marks remain, moisten the cloth
slightly with a detergent that is designed for LCD or mobile
screens and wipe the screen gently from top to bottom. Never
use other detergents, as these may contain ammonia or other
additives.
IMPORTANT:
• Never spray, or pour liquids directly on to the screen.
• Do not clean the screen while the system is on.
CONVENTIONS USED WITHIN THIS MANUAL
The following buttons and symbols are universal and available on
many menu pages.
Home key, to return to the Home Screen.
Back button, to cancel and return to the previous
page.
Confirm button to confirm and proceed.
Changing a value:
Option 1: Press the arrow keys to increase or
decrease the value.
Option 2: Press the displayed number to
numerically adjust the value.
USING THE UNIT
POWERING ON
Each time power is applied, the unit will run through a series of
internal system tests which take approximately 20 seconds to
complete.
Once the internal system tests have been completed, the HMI will
always display the Home screen. The unit will be in Manual Mode
the first time that power is applied.
HOME SCREEN
From the Home screen it is possible to determine how the unit is
operating as well as navigating to further screens to configure the
unit to suit the demands of the end system.
From the Home Screen, it is possible to:
Navigate to further configuration screens to setup system para-
meters.
• Manually adjust the fan speed.
• Determine the operating status of the product.
• Interrogate and acknowledge system alarms.
Use the number buttons to enter
a value.
Confirm with or cancel with .
Values that can only be read, but not written,
are displayed without a surrounding window.
Values that can be both read and written,
are displayed with a surrounding window.
Some submenus has several
pages. Touch the upper or the
lower part of the scroll list to
navigate between pages.
14

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Post-heater active
Cooling active
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
OPERATING STATUS
ALARM
No alarm
Alarm B
Alarm A
Manual mode
Automatic mode
Timer 1
Timer 2
Timer 1/Timer 2
Stop
Shut down time
4.2 HOME SCREEN
STATUS LINE
CLOCKCURRENT SET
POINT VALUE
Trickle or low speed
Normal or medium speed
Boost or high speed
OPERATING MODES

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4. CONTROL PANEL, OPERATIONS, COMMISSIONING
4.2 HOME SCREEN, CONT.
STOP MANUAL AUTO-
MATIC
ALARM
See section 4.3..
SHORTCUT TO SET THE
TEMPERATURE SET POINT
USER SETTINGS
See section 4.3.
SHORTCUT TO SET THE TIME
AND DATE
SELECT OPERATING MODE
See section 4.3.
TRICKLE OR
LOW SPEED
NORMAL OR
MEDIUM SPEED
BOOST OR
HIGH SPEED
Press each field to select the operating mode.
Only active in Manual Mode.
SHORTCUT TO COMMISSIONING
WIZARD

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4. CONTROL PANEL, OPERATIONS, COMMISSIONING
4.3 SUB MENUS
OPERATING MODES
The operating status icon present on the Home Screen dis-
plays the current operating mode. To change the operating
mode, press the large fan icon located on the Home Screen.
The unit has three operating modes selectable through the
Operating Modes screen:
Stop Mode: In this mode, the unit will stop both the
supply and the extract fans.
Manual Mode: In this mode, the unit can be manually
adjusted on the Home Screen to run at three different
speeds.
Automatic Mode: In this mode, the unit will be automa-
tically controlled using internal schedules and timers,
CO
2
demand control, PIR sensors, etc.
ALARM SCREEN
The alarm icon on the Home Screen indicates the status of any
system alarms:
Alarm type B are deemed non-critical
and do not stop the unit ventilation.
Alarm type A are deemed critical and will
cause the unit to stop ventilating.
Press the icon to enter the Alarm Screen.
USER SETTINGS
TEMPERATURE STATUS
The temperature set point is used to determine when
the post-heater (if fitted) starts to warm the supply air
entering the property. The temperature set point can be
adjusted to any temperature between 15° C and 35° C,
factory setting is 19° C.
Temperatures and output signals are read only values.
FAN STATUS
From the Fan Status screen it will be possible to view
parameters such as supply and exhaust fan speeds, %.
AIR QUALITY
Not for VEKA.
SYSTEM OVERVIEW
Version Control Panel IP Octet 1
Bootloader Control Panel IP Octet 2
Version Control Card IP Octet 3
Bootloader Control Card IP Octet 4
Unit type VEKA
SCHEDULES
Read only. For more information see section ”Schedules”,
section 4.7.
ADVANCED SETTINGS
See section ”Advanced settings”, section 4.4.
Example 1: No alarm Example 2: Active alarms
CLEARING ALARMS
To clear an individual alarm, press the Ack button. To clear all the
Alarms press the Ack All button on top of the screen.
It may not always be possible to clear the status of an alarm as the
source of the alarm may immediately trigger the status to return.
For example, it will not be possible to clear a faulty temperature
sensor alarm until the sensor itself has been repaired or replaced.
Alarm B
No alarm
Alarm A
ALARM HISTORY

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4.4 DATE AND TIME, LANGUAGE
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
SETTINGS
To enter the settings menu:
1. Push the gear cog button.
2. Push the spanner button.
3. In this menu you set the date, time and language. It is also
possible for installers and service personnel to log in and
access additional parameters.
DATE/TIME
2 Set the time and press the Confirm button
1. Set the date and press the Confirm button.
CHOOSE LANGUAGE
1. Choose the appropriate language flag and press
the Confirm button.
Note, further language flags are available after pressing the right
arrow icon. Not all translations are available.

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4. CONTROL PANEL, OPERATIONS, COMMISSIONING
4.5 ADVANCED SETTINGS FOR INSTALLERS AND
SERVICE PERSONNEL
LOGIN
Advanced settings requires the Login passcode, 0000, to be
entered.
1. Enter the correct passcode and press the Confirm button.
SETTINGS FOR INSTALLERS AND SERVICE PERSONNEL
This section provides an overview to the more advanced opera-
tions that are available from the Home Screen via the passcode
protected Advanced Settings option.
Numerous system parameters can be adjusted through the
Settings Screen; however, only those that are relevant and app-
ropriate to the scope of the HMI User Manual will be described. It
is strongly recommended to avoid the adjustment of any system
parameters not outline within this section.
Access to the Settings Screen is passcode protected to prevent
system critical parameters from being accidentally adjusted to
values that could compromise the correct operation of the unit.
Therefore, extreme caution should be observed when adjusting
Advanced Settings parameters.

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4. CONTROL PANEL, OPERATIONS, COMMISSIONING
4.6 COMMISSIONING WIZARD
There are two ways to start the wizard.
1. Press the question mark on the start screen. The question
mark is not shown if the wizard has been started earlier.
2. Choose “2. Run Commissioning Wizard” under Settings/Login
Press “2.1 Start” to get a step by step guidance through the set-
tings needed during commissioning, or go directly to a specific
menu to change a single value.

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Menu 2.2 refers to external exhaust fan if any.
When completed, press the confirm button to proceed to next
step.
Option 1 - Use ±buttons
Option 2 - Use the numerical keypad, confirm with .
Make the appropriate settings for the supply fan.
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
There are two ways to change the fan speeds:
Option 1 – Press Trickle, Normal, Boost, the use ±1 or ±10 buttons
Option 2 – Press the values within the boxes adYescent to Trickle,
Normal or Boost, then use the numerical keypad.
OPTION 1 OPTION 2

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Enter desired temperature setpoint value.
If using outdoor temperature compensation or room control also
set the minimum and maximum temperature for the supply air.
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
To end the commissioning wizard press the red cross button.
Press the √to continue to schedules. See section 9.7

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Only Weekly 1 should be activated.
EXAMPLE 1
Below is an example of a weekly schedule configured to run the
fans at normal speed from 08.00 to 18.00 Monday to Friday.
At all other times, the fans are turned off.
Day Time Fan speed
Monday 8–18 Normal
Tuesday 8–18 Normal
Wednesday 8–18 Normal
Thursday 8–18 Normal
Friday 8–18 Normal
Other time Stop
4.7 SCHEDULES
The controller has three types of internal time schedules: Weekly,
Single date and Date period.
First, program the weekly schedule with the required times. Then
use any single date programs and the period to enter exceptions.
Each schedule also needs to be activated. This is done by
pressing the grey tick button. A brown tick indicates that the
schedule is active.
PRIORITY
When several enabled applications overlap, the following applies:
Lowest priority Weekly 1
– –
–Weekly 8
–Single date 1
– –
– –
–Single date 4
–Date period 1
–
–
Highest priority Date period 4
WEEKLY-SCHEDULE (1-8)
By using a weekly schedule the unit can be programmed to ope-
rate at trickle, normal and boost speed alternatively stop.
4. CONTROL PANEL, OPERATIONS, COMMISSIONING

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4.7 SCHEDULES, CONT.
EXAMPLE 2
Below is an example of a weekly schedule configured to run the
fans at normal speed from 08.00 to 18.00 Monday to Thursday,
from 08.00 to 17.00 on Friday and 10.00 to 14.00 on Saturday. At
all other times, the fans are turned off.
Day Time Fan speed
Monday 8–1 8 Normal
Tuesday 8–18 Normal
Wednesday 8–18 Normal
Thursday 8–-18 Normal
Friday 8–-17 Normal
Saturday 10–14 Normal
Other time Stop
4. CONTROL PANEL, OPERATIONS, COMMISSIONING
EXAMPLE 3
Below is an example of a weekly schedule configured to run the
fans at normal speed from 08.00 to 18.00 Monday to Friday.
At all other times, the fans are configured to run at trickle speed.
At trickle speed the temperature set point will be decreased by
two degrees.
Day Time Fan speed Temperature set point
Monday 8–18 Normal 0 ° C
Tuesday 8–18 Normal 0 ° C
Wednesday 8–18 Normal 0 ° C
Thursday 8–18 Normal 0 ° C
Friday 8–18 Normal 0 ° C
Other time Trickle (Low) –2 ° C
Only Weekly 1–2 should be activated.
Only Weekly 1–3 should be activated.