flakt woods TopMaster User manual

TopMaster Air Handling Unit
Control and Regulation Equipment

Fläkt Woods 8217 GB 2014.07.02 2 Specifications are subject to alteration without notice
TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Electrical connection
Electrical cabinet ......................................................... 3
Electrical connection and fuse protection ................ 3
Sensors and accessories
Sensors and accessories.............................................. 4
Temperature sensor ................................................... 5
Damper actuator ......................................................... 5
Water heater ................................................................ 6
Liquid cooling ............................................................ 6
Electrical heater ........................................................... 6
DX -cooling ................................................................. 6
Valve actuator and
valve for heating and cooling.................................... 7
Connection of external components......................... 8
Installation and connection
Installation of control panel.............................................9
User instructions
General, general buttons and symbols.........................10
Home screen.....................................................................11
Basic operation, overview..............................................12
Submenus .........................................................................13
Settings
 Conguringtime,dateandlanguage .........................14
Login .................................................................................15
Installers and service personnel....................................15
Commissioning Wizard
Commissioning of fan speeds .......................................16
Schedules
Schedules..........................................................................17
Control and regulation functions
Control and regulation functions..................................20
Parameter list
Parameter list ...................................................................23
Contents

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Electrical cabinet – Electrical connection and
fuse protection
Electrical connection and fuse protection
Electrical connection is made to the terminals in the ec-
trical cabinet. A separate switch -disconnector must be
used, e. g. RDTZ-89-016.
Fuse protection
The fuse protects the unit’s incoming supply:
Size 030 rated at 10 AT,
Size 050 rated at 16 AT.
Fuse protection for DX -cooling is carried out separately.
Feed
3 x 400 V for units with electric coil.
1 x 230 V for units with water coil, phase connected to
terminal L1.
1
3
2
4 5
Electrical cabinet
1. Connection incoming supply
2. Control card
3. Condenser, rotor
4. Fuses
5.Transformer, 230 V/24 V

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Sensors and accessories
Sensors and accessories
All sensors and accessories are connected to TopMaster
via connections in the electrical cabinet. Cables to exter-
nal components are secured in the electrical cabinet using
the tie-rail with a cable tie, for example.. The cable is then
placed against the cellular plastic strip on the unit (see
gure1).
When all cables are connected to terminals and the
cables are secured on the tie rail, the cover is positioned
on the electrical cabinet and secured using the appro-
priatescrews(seegure2).Thecellularplastic,whichis
semi-elastic, will slowly adapt to the shape of the cables
andindoingsothelead-throughwillseal(seegure3).
Informationabouthowthedierentsensorsand
accessoriesshouldbettedandconnectedisprovidedin
the following section. Figure 1. The cables are secured on the tie rail using a cable tie and
placed against the cellular plastic strip on the unit.
Figure 2. When the cables are connected to the terminals and then
secured to the tie rail, the cover is fitted on the electrical
cabinet.
Figure 3. The semi-elastic cellular plastic slowly adapts itself to the
shape of the cables and the lead-through seals.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Sensors and accessories
Temperature sensors
The TopMaster is equipped as standard with three factory-
mounted temperature sensors:
Supply air sensor GT1
Positioned at the supply air inlet connection spigot.
Outdoor air sensor GT3
Positioned at the outdoor air inlet spigot.
Extract air sensor GT12
Positioned at the extract air inlet connection spigot.
Other sensors:
Room temperature sensor GT2
Included when room control is selected, and then repla-
ces extract air sensor GT12. It is intended for placement
on an inner wall. The sensor should be placed in an
area with good air circulation and it should not be ex-
posed to direct sunlight. It is delivered loose without
any cable.
Freeze-protection sensor GT5
Included as standard when the unit is equipped with
heat water coil. To be mounted on the heater’s return
line.
Note! If a cooling coil is mounted in
the duct, the supply air sensor must
be moved from the unit into the duct,
and placed after the coil.
Filter monitors (accessories)
TheltermonitorsGP1andGP2areenclosedseparately.
Connect hose to test point. Set the required alarm limit
acrossthelterusingtheknobonthesensor.Forinstalla-
tion, see enclosed instruction.
Air flow monitors (accessories)
TheairowmonitorsGP1andGP2areenclosedsepa-
rately. For installation, see enclosed instruction. Connect
hosetotestpoint.Airowmonitorscannotbecombined
withltermonitors.
Damper with actuator (accessory)
2 positions with spring return, 15 Nm, 24 VAC.
Damper with mounted actuator is delivered separately.
Timer, prolonged, forced mode
Any timers are enclosed separately. When the push but-
ton is used the internal timer in the controller must be set
to the required time.
FunctionofcontrolinputsTimer1(T1)andTimer2
(T2)canbeselectedaccordingtothefollowingtable.
Timer Function 1
Timer 1 Timer 2
Manual/Automatic Mode 0 0
Trickle 1 0
Normal 0 1
Boost 1 1
Timer Function 2 (default)
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

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Rotor pressure switch
Rotorpressureswitch(GP7)fordefrosting,factory
-mounted.
Water heater
Circulationpump(CP1)andvalveactuator(SV1)forwa-
ter heating is connected as in the table below. If the pump
motor does not have an integrated alarm unit, the motor
protection can be used to receive an alarm signal.
Liquid cooling
Circulationpump(CP2)andvalveactuators(SV2)for
liquid cooling mode are connected as shown in the table
below. If the pump motor does not have built-in alarm
device, motor protection is used to obtain an alarm signal.
Sensors and accessories
Component Terminal Connection Comments
Circulation CP1 Start C-N-PE Pump supply
pump CP1 (230 VAC max 2A*)
CP1 Start N0 - L1 Clamp at circulation
pump
CP1 Alarm NO - C Potential-free alarm
34 - 35 input, supplied design
as NO, can be
configured
Valve actuator SV1 Control Y- M- G- GO
38-39-40-41
*) Total power consumption for cooling
and heating may amount to max 2 A
Component Terminal Connection Comments
Circulation CP2 Start C-N-PE Pump supply
pump CP2 (230 VAC max 2A*)
CP2 Start N0 - L1 Clamp at circulation
pump
CP2 Alarm NO - C Potential-free alarm
36 - 37 input, supplied design
as NO, can be
configured
Valve actuator SV1 Control Y- M- G- GO
42-43-44-45
*) Total power consumption for cooling
and heating may amount to max 2 A
Electric heater
If an electric heater has been ordered, this is connected
when supplied. The electric coil is factory mounted.
DX-cooling
The Curo™ control system is able to control DX -cooling,
1-stage. Note! DX -coil is not a part of the unit delivery.
For setup, see chapter on Control and Regulation fun-
ctions. Electrical connection is as shown in the following
table.
Fire protection function
Externalrealarmcanbeconnectedtoterminalinelec-
trical cabinet to stop the unit.
Alarm output
Potential-free connection, max. load 24 V, 200 mA.
TopMaster has a total alarm output which can be selec-
ted, allowing you to indicate just A alarms or both A and
B alarms.
Component Function Terminal Connection Design
specification
1-stage Start CP2 Start C-NO Start: 10%,
DX -cooling cooling Stop: 0%
Alarm CP2 Alarm NO - C NO
36 - 37
Note! If a cooling coil is mounted in the
duct, the supply air sensor must be moved
from the unit into the duct, and placed
after the coil.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Valve actuator for heating SV1 and
cooling SV2
Connectedtoterminalinelectricalcabinet.Strokelength
5.5 mm. Intended for assembly on 2-way and 3-way
valves of the type VVG44 or VXG44.
3-way valve VXG
The bypass is closed by turning the spindle inwards, the
bypass is opened by turning the spindle outwards.
Sensors and accessories
Accepted installation method
Valve for heating and cooling
The valve and valve actuator can be easily installed with-
outspecialtools.Aparticleltershouldbettedbefore
the valve to extend its service life.
2-way valve VVG
Theowisincreasedbyturningthespindleinwards,the
owisreducedbymovingthespindleoutwards.
Note that the two-way valve cannot be used as a three-
way valve.
The flow direction in the valve is indicated by the arrow.
Accepted installation method
Accepted installation method
Wheninstallinga3-portvalvecheckasfollows:
Mixture from A/B to AB
Distribution from AB to A/B

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Sensors and accessories
1. CP1/SK1 Start
2. CP2/DX Start
3. CO2
4. ST1
5. ALM, Alarm output, max 24 V, 200 mA
6. Fire, Fire alarm
7. TMR1, Timer input 1
8. TMR2, Timer input 2
9. CP1, alarm heating
10. CP2, alarm cooling
11. SV1 CTRL, control signal heating
12. SV2 CTRL, control signal cooling
13. GT1
14. GT3
15. SK1 Supply, supply electric coil
16. TF Supply
17. FF Supply
18. GP3
19. GP4
20. GT5
21. GT2
22. GS1
23. GP7
24. GP1
25. GP2
26. MODB, Modbus RS485
27. TF CTRL, control signal supply air fan
28. FF CTRL, control signal extract air fan
Connection of external components
1 2 3 4 5 6 7 8 9
10 12 14
15 17 19 21 23 25 27
16 20 22 24 26 2818
11 13

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Installation and connection
1. Open the control panel using a screwdriver
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 or using
screwsinajunctionbox.Pushbackthedisplayinthe
enclosure.
5.Connectthecabletothebackofthedisplayasshown
above. Note. Please do not touch the electronics.
Note!
The control panel is only for indoor use.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
General
This section of the instructions provides an introduc-
tiononhowtheCuro™touchcontrolpanelworksand
it is intended to supplement the instructions for the air
handling unit.
The control panel is provided with a touch display. To
navigatethemenus,useeitheryourngerorthebackof
a pen.
When power is switched on all the menus are loaded
up,whichtakesabout20–30seconds.Thenthepaneldis-
plays the Home screen.
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 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.
General, general buttons and symbols
General buttons and symbols
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.
Conrmbuttontoconrm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.
Use the number buttons to
enter a value.
Conrmwithor
cancel with .
Home
65
1. Schedule
2. Run Commissioning Wizard
4. Fan Control
5. Heating / Cooling
3. Timer Control
Settings
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 have sev-
eral pages. Touch the upper
or lower part of the scroll
list to navigate between
pages.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Home screen overview
18°C 11:08
Operating status
Alarm
No alarm
Alarm B
Alarm A
Heat recovery active
Post-heater active
Defrosting in progress
Cooling active
Manual mode
Automatic mode
Constant pressure
Constant air volume
Timer 1
Timer 2
Timer 1/Timer 2
Stop
Status line
Clock
Current set point
value
Trickleorlowspeed
Normal or medium speed
Boost or high speed
Operating modes

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Alarm
See page 13.
Operation, home screen and submenus
18°C 11:08
User settings
See page 13.
Setpoint Temp
Setpoint
Temp.
Set Time
Shortcut to set the
temperature set point
Shortcut to set the
time and date
Select operating mode
See page 13.
Trickle or
low speed
Normal or
medium speed
Boost or
high speed
Presseacheldtoselecttheoperatingmode.
Only active in Manual mode.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Operating modes
The operating status icon on the Home screen displays the
current operating mode. To change the operating mode,
press in the middle of the large fan icon.
User settings
Operation, submenus
Manual Mode
Stop Mode
Automatic mode, the unit is controlled using
schedules.
Alarms
Symbol on Home screen shows alarm status.
No Alarm
Alarm B
Alarm A
Press the icon to enter the Alarm screen.
Setpoint temperatures
Here you set the desired setpoint. The default
factory setting is 18 ° C. Other temperatures are
read-only.
Fan control status
Fanspeedsandpossiblepressuresandow
rates only for reading.
Air quality
Not in use for TopMaster.
System overview
Summarizes the unit’s main operating para-
meters. See section “Parameter list” on pages
23–27.
Schedules
Seesection”Schedules”onpages17–19.
Advanced operations
See section ”Advanced operations” on pages
14–15.
No active alarms Active alarms
Sensor fault supply air Ack
Filter alarm Ack
Ack all
Example 1: No alarm Example 2: Several alarms
Resetting the alarm
Toresetthealarm,presstheAckbuttonaftereachalarm
orAckAll(topright).
If the alarm persists, it reappears on the display and the
cause must be corrected before resetting.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Configuring time, date and language
Settings
To enter the settings menu:
2:01 am
21 C
1. Press the gear cog button.
Set Time and Date
Set Language
Login
Settings Set Language
2. Press 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.
Time/Date
Set Time
1. SetthetimeandpresstheConrmbutton
Set Date
2. SetthedateandpresstheConrmbutton.
1. Choosetheappropriatelanguageagandpress
theConrmbutton.
Note,furtherlanguageagsareavailableafter
pressing the right arrow icon.
Choose language

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Advanced settings
Login
To enter the “Settings” menu for installers and service
personnel requires login.
The default passcode is 0000. This can be changed
later.
Enter passcode
****
1.EnterthecorrectpasscodeandpresstheConrmbutton.
For commissioning of fans, see following section
“Commissioning Wizard” on page 16.
Forothersettings,seeParameterlistonpages23–27.
Settings for installer and service personnel
1. Schedule
2. Run Commissioning Wizard
4. Fan Control
5. Heating / Cooling
3. Timer Control
Settings
6. Air Qualty
7. Alarm Configuration
9. Save Settings
10. Load Settings
8. Configure
Settings
11. Logout
Settings

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
2. Extract Fan
Trickle 35%
Normal 65%
Boost
100
%
Commissioning Wizard
Home
65
2. Extract Fan
Trickle 35%
Normal 67%
Boost
100
%
The speeds for each operating mode can be changed in
two ways:
Option 1 - PressTrickle,NormalorBoost
Option 2 - Press the value
Option 1 - Use the ±-buttons
Option 2-Usethenumericalkeypad,conrmwith.
Commissioning Wizard
The Commissioning Wizard allows the fan settings to be
conguredinasimpleandintuitivemanner.
The Commissioning Wizard is accessed by selecting
the “Run Commissioning Wizard” option from the Set-
tings screen.
1. Schedule
2. Run Commissioning Wizard
4. Fan Control
5. Heating / Cooling
3. Timer Control
Settings
Option 1 Option 2
2. Extract Fan
Trickle
35%
Normal
65%
Boost
100
%
-1
-10
+1
+10
Whennishedwiththesettings,presstheConrmbutton
andthenmakethecorrespondingsettingsforthesupply
fan.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
OnlyWeekly1shouldbeactivated.
Schedules
Example 1
Belowisanexampleofaweeklyscheduleconguredto
run the fans at normal speed from 08.00 to 18.00 Monday
toFriday.Atallothertimes,thefansareturnedo.
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
1 Weekly 1
Fan speed Normal
Temp set point Rel 0°C
From ToMon Fri
Daily 08:00 18:00
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,suchasweekendsandholidays.
Each schedule also needs to be activated. This is done by
pressingthegreytickbutton.Agreentickindicatesthatthe
schedule is active.
Priority
When several enabled applications overlap, the following
applies:
Highest priority: Date period 4
– –
– Date period 1
– Day 4
– –
– –
– Single date 1
– Weekly 8
–
–
Lowest priority: Weekly 1
1.9. Date period 1Schedule
1. Weekly 1 21
2. Weekly 2
3. Weekly 3
4. Weekly 4
5. Weekly 5
Schedule
11. Single date 3
12. Single date 4
13. Date period 1
14. Date period 2
15. Date period 3
Schedule
6. Weekly 6
7. Weekly 7
8. Weekly 8
9.
Single date 1
10. Single date 2
Single date 1
Schedule
16. Date period 4
Weekly- schedule (1–8)
Withhelpofaweeklyscheduletheunitcanbeprogram-
medtooperateattrickle,normalandboostspeedalter-
natively stop.

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TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Example 2
Belowisanexampleofaweeklyschedulecongured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o.
Day Time Fan speed
Monday 8–18 Normal
Tuesday 8–18 Normal
Wednesday 8–18 Normal
Thursday 8–18 Normal
Friday 8–17 Normal
Saturday 10–14 Normal
Other time Stop
1 Weekly 1
Fan speed Normal
Temp set point Rel 0°C
From ToMon Fri
Daily 08:00 18:00
2 Weekly 2
Fan speed Stop
Tem Setpoint Rel 0°C
From ToFri Fri
Daily 17:00 18:00
Schedules (cont.)
Example 3
Belowisanexampleofaweeklyscheduleconguredto
run the fans at normal speed from 08.00 to 18.00 Monday
toFriday.Atallothertimes,thefansareconguredto
runattricklespeed.Attricklespeedthetemperatureset
point will be decreased by two degrees.
Day Time Fan speed Temp. setpoint
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
3 Weekly 3
Fan speed Normal
Temp Setpoint Rel
0°C
From To
Sat Sat
Daily 10:00 14:00
1 Weekly 1
Fan speed Trickle
Temp Setpoint Rel
-2°C
From ToMon Sun
Daily 00:00 23:59
2 Weekly 2
Fan speed Normal
Temp Setpoint Rel 0°C
From ToMon Fri
Daily 08:00 18:00
OnlyWeekly1–2shouldbeactivated.
OnlyWeekly1–3shouldbeactivated.

Fläkt Woods 8217 GB 2014.07.02 19 Specifications are subject to alteration without notice
TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
Schedules (cont.)
1. Single date 1
Fan speed
Stop
Temp Setpoint
Date 6-Jun-2014
0°C
Rel
Fan speed
Stop
Temp Setpoint
0
C
Start date
24-Dec-2014
Stop date
26-Dec-2014
Rel
Single date schedule (1–4)
Asingledatescheduleisdenedasaone-oschedule
thatautomaticallystartsandnishesonthesamedate.
Example
Theunitmustbeswitchedoon6June.
Date period schedule (1-4)
Adateperiodscheduleisdenedasaone-oschedule
thatisconguredtorunbetweenanytwodates.
Example
Theunitmustbeswitchedobetween24Decemberand
26 December.
Remember to enable the desired time
channels by pressing
Note!

Fläkt Woods 8217 GB 2014.07.02 20 Specifications are subject to alteration without notice
TopMaster Air Handling unit CONTROL AND REGULATION EQUIPMENT
1. Rotor, heating and cooling
Theunitiscongureddierentlywithregardtoheating,
heat recovery and cooling, see below.
Choice of heating function
• No heater
• Electric heater
• A water heater with frost-guard function
Heat recovery
• Continuously rotating heat exchangers
Choice of cooling
• No cooling
• Water -cooling
• DX cooling, 1-stage
Control function
Thecontrolfunctionworksasfollows:
Regardless of control mode the unit tries to achieve the
desired setpoint.
This is done by the unit depending on the needs,
demand for heat recovery, heating or cooling. Built into
the system is also a dead zone. The dead zone function
(usually2°C)actsasatemperaturezonebetweenheat
recovery and cooling unit where neither calls for heat re-
covery or cooling.
The reason for having a dead zone, is that the tempe-
rature will be slightly lower in winter, and slightly higher
insummer.Thisisenergy-ecientandinpracticeeven
more convenient for people staying in the room.
Room control and exhaust air control is the same
controltypewiththedierencethatincombinationwith
room control an external room sensor is needed (separate
orderingcode).Inadditionitispossibletouseoutdoor
temperature compensation. This control mode cannot be
combined with extract air control or room control.
Theunitisconguredforsupplyaircontrolasstan-
dard.Toobtainothercontrolmodes,rstthecontroller
must be changed from standard mode to cascade mode.
Then control mode is selected by changing the cascade
referencetoextractaircontrol/roomcontrol(0)oroutdo-
ortemperaturecompensation(1).Belowisadescription
ofthedierentcontrolmodes.
Supply air control
To maintain a constant supply air temperature, the con-
trollerworksfromaxedsetpointandthesupplyair
temperature. Based on these parameters, the controller
controls the current heating, heat recovery and cooling
sequences.
Extract air control
The exhaust air temperature gives a good average value
ofthetemperatureindierentrooms.Usingthisthe
unit controls the supply air temperature to maintain the
extract temperature at a desired level.
This method is suitable for ventilation systems that
supply a number of similar rooms. In cases where dif-
ferentroomshavedierentheatingrequirements,this
method should not be used. This is because the unit can-
not detect the varying heating needs, but can only read
an average temperature.
The limits on the supply air temperature (min. temp.
/max.temp.)ensurethatthesupplyairtemperatureis
maintained within the set range.
Default parameters for extract air control
1. Controller = 2 Selects cascade control
2. Cascade reference = 0 Selects extract air control
3. Cascade A = 0.5 When the sensor gets colder
than given setpoint value
4.CascadeB=–0.5 Whenthesensorgetshotter
than given setpoint value
5. Min. temp. = 15°C Sets lowest supply air
temperature
6. Max. temp. = 25°C Sets highest supply air
temperature
Example
1. Setpoint = 18°C
2. Extract air temperature = 16°C
This means that the new calculated setpoint for the
supply air controller is:
Calculatedsetpoint=setpoint+(setpoint–exhaustair
temperature)xcascadeA=18+(18-16)x0.5=19°C.
Figure 1. The figure shows the controller’s output signals to the
various unit components at different temperatures. The
figure also shows two temperatures, one for heating (T2)
and one for cooling (T3). The zone between T2 and T3 is
called the dead zone. Note that heating is activated only
when heat recovery is working at 100%.
2. Temperature controls
TopMaster has three temperature control options, supply
air, extract air control and room control.
Control functions
Heating
Recovery
Cooling
Control signal, %
Sequence control
Temperature, °C
100
50
T0 T1 T2 T3 T4