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3.3.2. AHU MENU  TEMPERATURE CONTROL  RECIRCULATION
Recirculation mode – selecting the operation mode for
the recirculation chamber
▪ MECH – Maximum Energy Changeover– control
from the PID controller, recirculation plays the role
of the first heating / cooling section in order to
take full advantage of energy recovery, the scope
of possible changes concerning recirculation is
defined by fixed setting of minimum fresh air.
Min. fresh air
20 %
▪ MECH.Multi – as above, however the minimum
fresh air setting is defined separately for different
operation modes and fan steps.
1.st
VS 00 HMI Advanced EVO
Recirculation
Recirculation mode
MECH
0 %

100 %

Controller
Recirculation rate
Min. fresh air
20 %
1.st
2.st
Eco
20.0% 20.0%
Comf
20.0%
Manual mode
20
1.st
2.st
20.0%
2.st
Eco
20.0% 20.0%
Eco
20.0% 20.0%
Comf
20.0%
Comf
20.0% 20.0%
20.0%
▪ Manual – fixed manual recirculation settings
Manual mode
20
%
%
Startup time
60
S
Enable temperature
15.0
°C
▪ Manu.Multi – manual recirculation settings with
differentiating the operation mode and fan stages
1.st
2.st
Eco
20.0% 20.0%
Comf
20.0% 20.0%
▪ Univ.AI – control from the universal analog input;
the range of possible changes is limited by the
setting of minimum fresh air
Controller – it indicates the actual signal from the
recirculation controller, specifies the link to the detailed
settings screen (the link is protected with a password see the Advanced Manual).
Recirculation rate – indicates current position of the
mixing damper, gives a link to output detail screen
(password protected link – see Advanced Manual)
0% – closed, 100% – opened
Note! In given example screen, the unit is in Off mode,
so the controller signal is 0%, but the actual position of
mixing damper is 100% to ensure closing the intake /
outlet dampers.
Min. fresh air – setting for min. opening of intake /
outlet dampers to provide fresh air in the ventilated
room
Range: 0..100%
Default: 20%
Password protected
Manual mode – setting fixed values of recirculation for
Hand and Hand.Multi modes
Range: 0..100%
VTS reserves the right to implement changes without prior notice
User’s Manual
17
EN