Vents-us TwinFresh Comfo RA1-50, User Manual

8

TwinFresh Expert (Duo) RA/M1

www.vents-us.com

The shutters are closed

The shutters are open

 TwinFresh Expert RА1 LOUVER SHUTTERS OPERATION PRINCIPLE

RA1 version is equipped with automatic shutters. During the ventilator operation the automatic shutters open and let the air flow freely 
through the ventilator. The automatic shutters are closed for 2 minutes at the ventilator shut down.

WARNING!

 In case of supplying power to the ventilator when the frontal part of the indoor unit is removed, no power is supplied to the 

actuator and its rod is not lifted to avoid damage. After installing the front part of the indoor unit into place, the louver actuator will start 
operating normally.

VENTILATOR OPERATION MODES

TwinFresh Expert RA/M1

TwinFresh Expert Duo RA1

Ventilation:

 the ventilator runs either in extract or supply mode 

at a set speed.
In this mode, when two ventilators are installed, one of them 
supplies and the other one extracts the air.

Boost:

 the ventilator goes to the maximum speed without 

changing the operation mode. 

Regeneration:

 the ventilator runs in two cycles, 70 seconds each, 

with heat and humidity regeneration. 
• 

Cycle I

. Warm stale air is extracted from the room and flows 

through the ceramic regenerator, which gradually absorbs 
heat and humidity. In 70 seconds, as the ceramic regenerator 
gets warmed, the ventilator is switched to supply mode.

• 

Cycle II

. Fresh intake air from outside flows through the ceramic 

regenerator, absorbs accumulated moisture and is heated 
up to the room temperature. In 70 seconds, as the ceramic 
regenerator gets cooled down, the ventilator is switched to air 
extract mode and the cycle is renewed. If two ventilators are 
installed, they operate with opposite rotation directions in this 
mode. While one ventilator supplies air, the other one extracts 
it.

Ventilation:

 one of the ventilator fans operates in the air extract 

mode and the other one operates in the air supply mode at a set 
speed. The fans do not change their rotation direction.

Boost:

 if the sensor is actuated, the ventilator follows one of two 

functioning algorithms set via the DIP switch during the ventilator 
setup. For details, see page 14. The DIP switch is set to OFF: the 
ventilator runs in the extract mode at the third speed (both fans 
run in the extract mode). The DIP switch is set to ON: the ventilator 
switches to maximum speed without changing the operation 
mode.

Regeneration:

 one of the ventilator fans operates in the air 

extract mode and the other one operates in the air supply mode. 
The fans change their rotation direction every 70 seconds.