Vents TwinFresh Comfo RA-50 User manual

USER’S MANUAL
SINGLE-ROOM REVERSIBLE ENERGY
REGENERATION VENTILATOR
TwinFresh Comfo RA-50
TwinFresh Comfo RA-50-2
TwinFresh Comfo RA1-50
TwinFresh Comfo RA1-50-2

2
CONTENTS
Safety requirements 3
Introduction 5
Use 5
Delivery set 5
Designation key 5
Main technical parameters 6
Design and operating logic 7
Mounting and set-up 8
Connection to power mains 12
Ventilator control 14
Maintenance 16
Troubleshooting 18
Storage and transportation rules 18
Manufacturer's warranty 19
Acceptance certicate 20
Seller's information 20
Mounting Certicate 20
Warranty Card 21

3
TwinFresh Comfo
TwinFresh Comfo
SAFETY REQUIREMENTS
• Read the user’s manual carefully prior to the operation and installation of the single-room reversible energy regeneration
ventilator, hereinafter the ventilator.
• Installation and operation of the ventilator shall be performed in accordance with the present user’s manual as well as the
provisions of all the applicable local and national construction, electrical and technical codes and standards.
• The warnings contained in the present user’s manual must be considered most seriously since they contain vital personal safety
information.
• Failure to follow the safety regulations may result in an injury or ventilator damage.
• Read the manual carefully and keep it as long as you use the ventilator.
• While transferring the ventilator control the user’s manual must be turned over to the receiving operator.
Symbol legend used in the manual:
VENTILATOR MOUNTING SAFETY PRECAUTIONS
WARNING!
DO NOT!
The ventilator must be disconnected from
the power supply prior to every installation or
repair operation.
The ventilator must not be operated
outside the temperature range stated in the
user's manual or in aggressive or explosive
environments.
Do not position any heating devices or other
equipment in close proximity to the ventilator
power cord.
Do not use damaged equipment or
conductors to connect the ventilator to
power mains.
While installing the ventilator follow the safety
regulations specic to the use of electric tools. Unpack the ventilator with care.
Do not change the power cord length at your
own discretion. Do not bend the power cord.
Avoid damaging the power cord.
Use the ventilator only as intended by the
manufacturer.

4
VENTILATOR OPERATING SAFETY PRECAUTIONS
Do not touch the controller or the remote
control with wet hands. Do not carry out the
ventilator maintenance with wet hands.
Do not wash the ventilator with water.
Protect the ventilator electric parts from
water ingress.
Do not block the air duct when the ventilator
is on.
OFF
ON
Disconnect the ventilator from power
supply before maintenance.
Do not let children operate the ventilator.
Do not damage the power cable while
operating the ventilator. Do not put any
objects on the power cable.
Keep explosive and inammable products away
of the ventilator. Do not open the operating ventilator.
In case of unusual sounds, smoke disconnect
the ventilator from power supply and contact
the service centre.
Do not let air ow from the ventilator be
directed to the open ame devices or
candles.

5
TwinFresh Comfo
TwinFresh Comfo
INTRODUCTION
This user’s manual includes technical description, operation, installation and mounting guidelines, technical data for the energy
regeneration ventilator TwinFresh Comfo RA-50, hereinafter the ventilator.
USE
The ventilator is designed to arrange permanent controllable air exchange in ats, cottages, hotels, cafes and other domestic and
public premises. The ventilator is equipped with a ceramic regenerator that enables supply of fresh air due to extract air heat energy
regeneration.
The ventilator is designed for through-the-wall mounting. The telescopic ventilator design enables its installation in the walls from
250 mm (9 13/16’’) up to 470 mm (18 1/2”) thick for the ventilator TwinFresh Comfo RA-50 and from 120 mm (4 3/4’’) up to 300 mm (11 13/16’’)
thick for the ventilator TwinFresh Comfo RA-50-2.
The ventilator is rated for continuous operation always connected to power mains.
Transported air must not contain any ammable or explosive mixtures, evaporation of chemicals, coarse dust, soot and oil particles,
sticky substances, brous materials, pathogens or any other harmful substances.
THE VENTILATOR IS NOT INTENDED TO BE USED BY CHILDREN,
PHYSICALLY OR MENTALLY DISABLED PERSONS, PERSONS WITH SENSORY
DISORDER, PERSONS WITH NO APPROPRIATE QUALIFICATION.
INSTALLATION AND CONNECTION OPERATIONS MUST BE PERFORMED
ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER THE APPROPRIATE
SAFETY BRIEFING.
THE VENTILATOR INSTALLATION SITES MUST PREVENT ACCESS BY
UNATTENDED CHILDREN.
DELIVERY SET
Ventilator 1 item
Fastening set 1 item
Remote controller 1 item
User's manual 1 item
Packing box 1 item
DESIGNATION KEY
TwinFresh Comfo RА X-50 ХХ
Unit name
TwinFresh Comfo - single-room reversible energy regeneration ventilator
Round connecting air duct
Air capacity [m3/h]
Ventilation hood type
_ - ventilation hood for the wall thickness 250-470 mm (9 13/16"-18 1/2")
2 - ventilation hood for the wall thickness 120-300 mm (4 3/4"-11 13/16")
Front panel type
_ - grille
1 - panel with a at front cover
Automation is included into the delivery set

6
•TwinFresh Comfo RA-50
•TwinFresh Comfo RA1-50
120-300
(4 ¾"-11 ⁄")
65
(2 ⁄")
144
(5 ⁄")
250-470
(9 ⁄"-18 ½")
133
(5 ¼")
65
(2 ⁄")
300 (11 ⁄")
300
(11 ⁄")
310 (12 ⁄")
260
(10 ¼")
280
(11")
213
( 8 ⁄")
213
( 8 ⁄")
157
6 ⁄"
153
6"
157
6 ⁄"
153
6"
VENTILATOR OVERALL DIMENSIONS, MM (INCHES)
Speed I II III
Supply Voltage, 50-60 Hz [V] 1~100-230
Ventilator Total Power [W] 3,80 3,96 5,61
Max. Ventilator Current [A] 0,024 0,026 0,039
Max. Air Capacity [m3/h] (CFM) 14 (8,2) 28 (16,5) 54 (31,8)
RPM [min-1] 610 800 1450
Noise Level, 3 m [dB(A)] (Sones) 19 (0,3) 22 (0,5) 29 (0,81)
Max. Transported Air Temperature [°C] / (°F) -20 (-4 ) up to +50 (+122)
Heat Regeneration Eciency up to 91%
Regenerator Type Ceramic
VENTILATOR TECHNICAL DATA
MAIN TECHNICAL PARAMETERS
The ventilator is designed for indoor application with the ambient temperature ranging from -20°C (-4 °F) up to +50°C (+122 °F) and
relative humidity up to 80%.
The ventilator is classied as a class I electric appliance.
Ingress Protection (IP) rating from solid objects and liquids IP 24.
The ventilator design is regularly improved, so some models may slightly dier from those ones described in this manual.
•TwinFresh Comfo RA-50-2
•TwinFresh Comfo RA1-50-2

7
TwinFresh Comfo
TwinFresh Comfo
DESIGN AND OPERATING LOGIC
The ventilator consists of the telescopic air duct with adjustable length regulated by position of the inner air duct inside the outer air
duct, the ventilation unit and the ventilation hood.
Two lters and the ceramic regenerator are located inside the inner duct of the telescope.
The lters are designed to purify supply air and prevent foreign object ingress to the regenerator and the fan.
The ventilator generates a sound alarm reminding to clean or replace the lter every 90 days.
The ceramic regenerator uses extract air heat energy to warm up supply air ow.
The regenerator is equipped with a pull cord inside to facilitate its withdrawal from the ventilator. The regenerator is installed on an
insulation material used as a sealant as well.
The ventilation unit must be installed on inner side of the wall. The ventilation unit is equipped with automatic shutters that shut the
air duct o during the ventilator standby and prevent air back draft.
The ventilation hood must be installed on outer side of the wall to prevent ingress of water and other objects to the ventilator.
SHUTTERS OPERATION LOGIC
VENTILATOR OPERATING MODES
Outer ventilation hood
Prevents direct water and foreign objects in-
gress to the ventilator.
Outer air duct
Outer part of the telescopic air duct
Inner air duct
Inner part of the telescopic air duct
Mounting plate
A mounting plate for installation the ventilation
unit on the wall and connecting the ventilator to
the power mains.
Ventilation unit
Is used to generate air ow by the fan. The deco-
rative grille protects the fan against foreign ob-
jects ingress from the premises.
The ventilation unit is equipped with automatic
shutters opening when the ventilator is on and
closing when it is o, thus preventing back air
ow.
Distance ring
Is used as a support for the lters and the regen-
erator in the inner air duct.
Filter
Designed to purify supply air ow and prevent
dust and foreign objects ingress to the ventila-
tor. Prevents regenerator clogging.
Filter
Designed to purify supply air ow and prevent
dust and foreign objects ingress to the ventila-
tor. Prevents regenerator clogging.
Ceramic regenerator
Provides extract air heat energy regeneration to
warm up supply air ow.
Air ow rectier
Eliminates air turbulence, thus reducing noise
level.
The ventilator has three ventilation modes:
• Natural air supply - the ventilator is used for natural ventilation, the fan is not activated.
• Supply - the ventilator supplies fresh air to the premise no matter of CN7 jumper position.
• Ventilation - the ventilator operates in permanent supply or extract mode at set speed depending on CN7 jumper position.
• Regeneration - the ventilator operates in reversible mode with heat and humidity regeneration.
VENTILATOR DESIGN
Ventilator is o - shutters are closed Ventilator is on - shutters are open

8
MOUNTING AND SET-UP
READ THE USER’S MANUAL PRIOR TO MOUNTING THE VENTILATOR.
CAUTION!
THE VENTILATOR MUST NOT BE INSTALLED IN
SITES WHERE THE AIR DUCT MAY BE CLOGGED BY
THE BLINDS, CURTAINS, DRAPES, ETC., TO PREVENT
THE ROOM DUST DEPOSITION AND ACCUMULATION.
ALSO, CURTAINS MIGHT OBSTRUCT NORMAL AIRFLOW IN
THE ROOM, THUS RENDERING VENTILATOR OPERATION NOT
EFFICIENT.
VENTILATOR MOUNTING
1. To mount the ventilator prepare a thorough round hole in the wall. The hole size is shown in the gure below.
( 6 ⁄")
170
A
A-A
A
A
I
R
E
X
T
R
A
C
T
A
I
R
S
U
P
P
L
Y
CYCLE I
CYCLE II
7
0
s
e
c
.
7
0
s
e
c
.
-10 °С
-10 °С
+20 °С
+20 °С
+17 °С
+17 °С
-7 °С
-7 °С
In Regeneration mode the ventilator operates in two cycles, 70 seconds each.
Cycle I. Warm stale air is extracted from the room. As it ows through the regenerator, it heats and moisturizes the regenerator,
transferring up to 91% heat energy. In 70 seconds as the ceramic regenerator gets warmed the ventilator is switched to supply mode.
Cycle II. Fresh intake air from outside ows through the ceramic regenerator and absorbs accumulated moisture and heat up to the
room temperature. In 70 seconds as the ceramic regenerator gets cooled down, the ventilator is switched into extract mode and the
cycle is renewed.

9
TwinFresh Comfo
TwinFresh Comfo
VENTILATOR MOUNTING
2. After preparing a through hole cut out a 25 mm (1’’) deep recess for laying of the cables and the contact sockets connected to the
mounting plate.
The recommended recess prole is shown in the drawing on the right.
max 200 mm(max 7 ⁄")
max 90 mm
(max 3 ⁄")
R100
(R4")
3. Install a telescopic air duct inside the wall. The telescopic air duct end must protrude to the distance A stated below:
max A
Inside Outdoors
4. Connect the mounting plate following the wiring diagram, page 12.
Prepare four fastening holes and x the mounting plate on the wall with fours 4x40 screws and 6x40 dowels (included into the delivery
set).
Align the telescopic air duct with respect to the mounting plate and ll the gaps between the wall and the telescopic air duct with a
mounting foam. The telescopic air duct must not protrude from the mounting plate surface.
While mounting several connected in series ventilators provide a
recess for the cable layout during the hole preparation to enable series
connection of several ventilators.
Ventilator model А, mm
TwinFresh Comfo RA-50 10 (3/8’’)
TwinFresh Comfo RA1-50 10 (3/8’’)
TwinFresh Comfo RA-50-2 10 (3/8’’)-110(4 5/16’’)
TwinFresh Comfo RA1-50-2 10 (3/8’’)-110(4 5/16’’)

10
VENTILATION HOOD MOUNTING
TwinFresh Comfo RA-50
TwinFresh Comfo RA1-50
TwinFresh Comfo RA-50-2
TwinFresh Comfo RA1-50-2
1. Mark the fastening holes for the outer ventilation hood and drill holes for the dowel 6x40. For marking convenience use the
ventilation hood back part.
200 mm
(7 ⁄")
Ø6  (¼")
4 holes
220 mm
(8 ⁄")
194 mm
(7 ⁄")
Ø6 mm (¼")
4 holes
247 mm
(9 ¾")
VENTILATOR MOUNTING
5. Install the lter, the ceramic regenerator, another lter and the air ow rectier in the consecutive order inside the telescopic air
duct.
6. Install the ventilation unit on the mounting plate. The ventilation unit is xed with magnets.