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5.2 Supply air temperature control
The supply air temperature is controlled with heat
exchanger and if needed with heating or cooling
element*.
In Comfort mode constant supply air temperature is
maintained by rotor efficiency control and heating or
cooling control.
In Eco mode maximum heating / cooling efficiency is
maintained. Supply air temperature is controlled only in
heating or cooling period.
The temperature control set point can be adjusted from
user panel, weekly timer, by operating mode or con-
trolled by room temperature.
Automatic summer night cooling detects the need
for cooling. Function lowers supply air temperature set-
ting and controls the rotor and cooling coil* to achieve
the best possible cooling effect.
5.2.1 Temperature control settings
The user can change temperature set point from
settings menu. By default temperature setpoint is for
supply air temperature. If room temperature based
control method is selected temperature setpoint defines
preferred room temperature.
Supply temperature control settings can be accessed
from the Settings/(1234)/Heating / Cooling/Supply tem-
perature control menu.
Control method
Control method
Setpoint
Setpoint (away)
Setpoint (travelling)
Control mode
If control method Supply air is selected the base setpoint
and lowered setpoints for Away and Travelling modes
can be set. The heat exchanger Control mode can be
selected.
Control method
Control method
Supply control min value
Supply controller max value
Cooling min setpoint
Cooling max setpoint
Setpoint
Setpoint (away)
Setpoint (travelling)
Control mode
If control method Room air is selected min and max val-
ues for heating and cooling (if external cooling device*
Supply air
17°C
17°C
16°C
ECO
Room air
17°C
17°C
14°C
25°C
21°C
21°C
20°C
ECO
is installed) periods can be set. The room temperature
control method aims to control room temperature by
controlling supply air temperature between min and
max values.
The Room temperature setpoint and lowered setpoints
for Away and Travelling modes can be set. The heat
exchanger Control mode can be selected.
NOTE! The Automatic summer night cooling can lower
supply air temperature setpoint.
5.2.2 Temperature measurement
The supply and room temperature measurements can be
fine tuned from settings menu (Settings/(1234)/Heating /
Cooling/Sensors / Controls).
If SET module is attached supply, room, outside or water
radiator temperature sensor inputs can be selected.
5.2.3 External heating & cooling units
Commissioning and setting of the heating and cooling
equipment* connected to the ventilation unit are per-
formed from Settings/(1234)/Heating / Cooling menu.
Detailed instructions are supplied together with accesso-
ries. By default the ventilation unit normally has internal
post heating.
Heating / Cooling
Adj. method
Sensors / controls
Int. post heater
Ext. post heater
Post heater out limit
Ext. post cooling
Ext. electric preheater
Ext. liquid coil
!
Turning off the internal post heating
or lowering the Post heater out limit is
not recommended, due to the risk of
condensation.
*) Accessory
2020-11-12
R9-H | R15-H Smart
Supply air
8°C
Important
All rights to changes reserved.
!
19
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