Komfovent RHP Standard, User Manual

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UAB KOMFOVENT we reserve the right to make changes without prior notice
RHP STANDARD_guide_21-03
EN
2.6. Minimum temperature control function (MTC)
Minimum temperature control function forcibly reduces the user-defined ventilation intensity when the set minimum
temperature cannot be reached. Fan speed is gradually reduced when the outdoor temperature drops below + 5 ° and the
power of the heat exchanger and heater is insufficient to reach the minimum temperature. If this function runs for a long
time, ventilation intensity is reduced to 20%.
During summer, the minimum temperature control function limits power of coolers when, in case of cooling demand,
supplied air temperature is below the minimum set temperature value.
For information on how to activate this function and set a minimum temperature value see Chapter “Control and Set-
tings”.
2.7. Operation on demand (OOD)
This function turns on the AHU as soon as the indoor air quality decreases. In this way, the air handling unit will only run
when ventilation is required and will remain stopped when the air quality is good. As the air quality decreases and reaches
the user-defined critical limit, the air handling unit starts and runs in the last activated operating mode. If the air quality
improves within 30 minutes (pollution drops 10% below the critical limit), the unit stops. If the air quality remains poor, the
unit keeps operating.
This function requires an additional air quality sensor installed inside the room (see “Installation Manual”). The same
sensor is also used for AQC function.
Sensor type is selected during ordering. Later, the sensor type may be changed in the remote controller menu “Settings”.
For information on how to activate this function and set a critical air quality value see Chapter “Control and Settings”.
2.8. Summer night cooling function (SNC)
Summer night cooling function uses the night’s cool air to ventilate the premises during summer. This function removes
excess heat accumulated during the day and fills the building with cooler outdoor air.
Function runs at night (from 00:00 a.m. to 06:00 a.m.) when the outdoor air is cooler than the indoor air and the indoor
temperature is higher than the user-defined limit (i.e. ventilation is required). When this function is activated, the ventilation
intensity is increased to the maximum and the outdoor air is supplied to the premises (all cooling devices are switched off,
heat exchanger is stopped). The user may also set the room temperature at which the function will be stopped.
Summer night cooling function has priority over ACV and AQC functions.
For information on how to activate this function and set ON/OFF temperatures see Chapter “Control and Settings”.
2.9. Override (OVR)
Override function is activated by closing designated contacts in the controller board, i.e. by connecting a switch, cooker
hood or a motion sensor (see “Installation Manual”). This function ignores current ventilation mode and switches to the pre-
selected mode or stops it. In the function setup screen the user can select any ventilation mode, weekly operation schedule
or turning off of the unit. Additionally, the user may also specify conditions when the override function should run:
• All the time – function is activated any time by closing contacts, regardless of whether the unit is operating or stopped.
• When running – function is activated by closing contacts when the unit is operating. When the unit is stopped with a
remote controller or by a weekly schedule, the function cannot be activated by closing contacts.
• When stopped – function is activated by closing contacts when the unit is stopped. If the unit is already running in any
ventilation mode, the function cannot be activated by closing contacts.
This function runs as long as contacts are closed. When the contacts are open, the unit returns to the previous ventilation
mode or stops, if it was stopped before activating the function.