Vents TwinFresh Comfo RA-50 User manual

USER’S MANUAL
TwinFresh Comfo:
• RA-50
• RA1-50
• RA-50-2
• RA1-50-2
Single-room reversible energy
regeneration ventilator

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2
Safety requirements 3
Purpose 5
Delivery set 5
Designation key 6
Technical data 6
Unit design and operating logic 7
Mounting and set-up 9
Connection to power mains 12
Ventilator control 14
Technical maintenance 16
Fault handling 18
Storage and transportation regulations 18
Manufacturer's warranty 19
Acceptance certicate 20
Seller information 20
Installation certicate 20
Warranty card 21
CONTENTS

3
• Read the user’s manual carefully prior to installing and operating the unit.
• Full the user’s manual requirements as well as the provisions of all the applicable local and national construction, electrical and
technical norms and standards.
• The warnings contained in the user’s manual must be considered most seriously since they contain vital personal safety information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control the user’s manual must be turned over to the receiving operator.
Symbol legend:
WARNING!
DO NOT!
SAFETY REQUIREMENTS
This user’s manual consisting of the technical details, operating instructions and technical specication covers the installation and mounting
of the single-room energy regeneration reversible ventilator TwinFresh (hereinafter «the ventilator» or «the unit» as mentioned in the «Safety
Requirements» and «Manufacturer’s Warranty» sections as well as in warnings and information blocks).
UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from power mains prior
to any installation operations. • The unit must be grounded!
• Do not lay the power cable of the unit in
close proximity to heating equipment.
• While installing the unit follow the
safety regulations specic to the use of
electric tools.
• Do not change the power cable length at
your own discretion.
• Do not bend the power cable. Avoid
damaging the power cable.
• Do not put any foreign objects on the power
cable.
• Unpack the unit with care.
• Do not use damaged equipment or cables
when connecting the unit to power mains.
• Do not operate the unit outside the
temperature range stated in the user's
manual. Do not operate the unit in
aggressive or explosive environments.
• Do not touch the unit controls with wet
hands.
• Do not carry out the installation and
maintenance operations with wet hands.
• Do not wash the unit with water.
Protect the electric parts of the unit
against ingress of water.

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UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS
• Do not allow children to operate the unit. • Disconnect the unit from power mains
prior to any technical maintenance.
• Do not store any explosive or highly ammable
substances in close proximity to the unit.
• When the unit generates unusual sounds,
odour or emits smoke disconnect it from
power supply and contact the Seller.
• Do not open the unit during operation.
• Do not direct the air ow produced by
the unit towards open ame or ignition
sources.
• Do not block the air duct when the unit is
switched on.
• In case of continuous operation of the
unit periodically check the security of
mounting.
• Do not sit on the unit and avoid placing foreign
objects on it.
• Use the unit only for its intended
purpose.

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PURPOSE
DELIVERY SET
The ventilator is designed to ensure continuous mechanical 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 ltered air heated by means of extract air heat
energy regeneration.
The ventilator is designed for through-the-wall mounting. The telescopic ventilator design enables its installation in the walls with various
thickness, see the table below:
Wall thickness Ventilator model
240 mm - 425 mm (9
7
/
16
’’- 16
3
/
4
”) • RA-50
• RA1-50
120 mm - 300 mm (4
3
/
4
’’- 11
13
/
16
’’) • RA-50-2
• RA1-50-2
The unit is rated for continuous operation.
Transported air must not contain any ammable or explosive mixtures, evaporation of chemicals, sticky substances, brous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust, pathogenic
germs).
Name Number
Ventilator 1 item
Fastening set 1 item
Remote control 1 item
User's manual 1 item
Packing box 1 item
THE UNIT MAY NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED PHYSICAL,
MENTAL OR SENSORY CAPACITIES, OR LACKING THE APPROPRIATE TRAINING. THE UNIT
MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER
THE APPROPRIATE BRIEFING. THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT
UNAUTHORIZED ACCESS BY UNATTENDED CHILDREN.

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DESIGNATION KEY
TECHNICAL DATA
TwinFresh Comfo R1-50- 2
Ventilation hood type
_ — standard ventilation hood
2 — metal ventilation hood for thin walls
Comfo Series
Connecting air duct cross-section form
R - round cross-section
S - square cross-section
Integrated control system
Front panel type
_ — ventilation grille
1 - panel with a at front cover
Rated air capacity [m/h]
The ventilator is rated 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%.
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
TwinFresh Comfo RA-50
TwinFresh Comfo RA1-50
213
( 8 ⁄")
213
( 8 ⁄")
240
( 9 ⁄"")
240
( 9 ⁄"")
120-300
(4 ¾"-11 ⁄")
100
(4")
125
(5")
100
(4")
125
(5")
144
(5 ⁄")
ø 157
(ø 6 ⁄")
ø 153
(ø 6")
ø 157
(ø 6 ⁄")
ø 153
(ø 6")
300
(11 ⁄")
310
(12 ⁄")
260
(10 ¼")
300
(11 ⁄")
280
11"
240-425
(9 ⁄’’ - 16 ¾”)
133
(5 ¼")
VENTILATOR OVERALL DIMENSIONS MM INCHES

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VENTILATOR TECHNICAL DATA
Speed I II III
Unit voltage [V /50-60 Hz] 1~100-230
Air capacity [m3/h] (CFM) 14 (8) 28 (16) 54 (32)
Power [W] 3,80 3,96 5,61
Current [A] 0,024 0,026 0,039
RPM 610 800 1450
Noise level, 1 m [dB(A)] (Sones) 22 (0,4) 29 (0,7) 32 (1,0)
Noise level, 3 m [dB(A)] (Sones) 13 (0,2) 20 (0,4) 23 (0,5)
Outdoor noise attenuation [dB(A)] (Sones) 18 (0,4)
Heat recovery eciency up to 90%
UNIT DESIGN AND OPERATING LOGIC
The ventilator consists of a telescopic air duct with adjustable length (inner part and outer part), a ventilation unit and an outer ventilation
hood. Two lters and a ceramic regenerator are located inside the inner duct of the telescope.
The air lters are designed to purify supply air and prevent foreign object ingress into the regenerator and the fan.
The ceramic regenerator utilises extract air heat energy to warm up supply air ow. The cord laid inside the regenerator is designed to pull
the regenerator from the ventilator. The regenerator is heat insulated with a specially designed insulating material.
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. It is used for directed air discharge and prevention of ingress of water and
other objects to the ventilator.
VENTILATOR DESIGN
Ventilation unit
Generates air ow by means of the fan.
The ventilation unit is covered with a
ventilation grille on inner side of the wall
to prevent ingress of foreign objects into
the fan.
The ventilation unit is equipped with
automatic shutters to prevent back draft
of air. The air shutters open during
operation of the ventilator and close
when the unit is turned o.
Mounting plate
A mounting plate for
installation of the ventila-
tion unit on the wall and
connecting it to power
mains.
Air ow rectier
Eliminates air turbulence
inside the ventilator.
Outer air duct
Outer part of the
telescopic air duct.
Inner air duct
Inner part of the
telescopic air duct.
Outer ventilation hood
Prevents direct ingress of water and
foreign objects into the ventilator.
Filter
Cleans supply air ow
and prevents ingress of
dust and foreign objects
into the ventilator. Filters
also prevent regenerator
soiling.
Ceramic regenerator
The ceramic regenerator
utilises extract air heat
energy to warm up supply
air ow.

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AUTOMATIC SHUTTERS OPERATION
VENTILATOR OPERATION MODES
The ventilator has four ventilation modes:
• Natural Air Supply - the automatic shutters are opened, the fan does not run.
• Air Supply - the ventilator supplies fresh air to the premise.
• 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 is o (the shutters are closed) Ventilator is on (the shutters are opened)
A
I
R
E
X
T
R
A
C
T
I
O
N
A
I
R
S
U
P
P
L
Y
CYCLE I
CYCLE II
7
0
s
e
c
7
0
s
e
c
-10 °
(+14 °F)
-10 °
(+14 °F)
+20 °
(+68 °F)
+20 °
(+68 °F)
+17 °
(+63 °F)
-7 °
(+19.4 °F)
-7 °
(+19.4 °F)
+17 °
(+63 °F)
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 ceramic regenerator, it heats and moisturizes the regenerator,
transferring up to 91 % heat energy. In 70 seconds as the ceramic regenerator gets warmed the ventilator switches to Air Supply mode.
Cycle II. Fresh intake air from outside ows through the ceramic regenerator, absorbs accumulated moisture and is heated to the room
temperature. In 70 seconds as the ceramic regenerator gets cooled down, the ventilator switches to air extract mode and the cycle is
renewed.

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MOUNTING AND SETUP
READ THE USER’S MANUAL PRIOR TO MOUNTING THE VENTILATOR.
WARNING!
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.
BESIDES, CURTAINS CAN IMPEDE THE NORMAL CIRCULATION OF
AIR IN THE ROOM, MAKING THE OPERATION OF THE VENTILATOR
INEFFECTIVE.
VENTILATOR MOUNTING
1. Prepare a round through hole in the outer wall. The hole size is shown in the gure below. While preparing the holes consider the method
of laying the power cable.
Ø170
Ø6 ⁄"
min 500
min 19 ⁄"
min 500
min 19 ⁄"
min 500
min 19 ⁄"
AA-A
A
Ø170
Ø6 ⁄"
Inner side of the wall
Outer side of the wall
While preparing the hole provide a recess for the cable layout to enable connection of several ventilators in series.
2. Install the telescopic air duct inside the wall, centre the air duct using the mounting plate and seal it with mounting foam.
35
1 ⁄"
A
Inner side of
the wall
Outer side of
the wall
Seal the centred
air duct using the
mounting foam
Ventilator model А [mm] (inches)
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’’)

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3. Install the mounting plate using the dowels (included in the delivery set).
Lean the mounting box
against the wall and mark
four holes for dowels
Lean the mounting box
against the wall and x it
with screws
Drill the holes and insert the
dowels
4. Consecutively install the lter, the ceramic regenerator, the second lter and the distance ring. Then attach the ventilation unit to the
mounting plate.
Filter
Distance ring
Ceramic regenerator Ventilation unit
Filter
OUTER HOOD MOUNTING
1. Mark the fastening holes for the outer ventilation hood and drill holes for the dowels. For convenience of marking use the back part of the
ventilation hood.
200 mm
(7 7/8")
Ø6 mm (1/4")
4 holes
220 mm
(8 11/16")
TwinFresh RA-50
TwinFresh RA1-50
194 mm
(7 ⁄")
Ø6 mm (¼")
4 holes
247 mm
(9 ¾")
TwinFresh RA-50-2
TwinFresh RA1-50-2
2. Insert the dowels from the delivery set into the holes.