Vents TwinFresh Comfo RA1-25-2, TwinFresh Comfo RA-35, TwinFresh Comfo SA-35, TwinFresh Comfo SA1-35-2, TwinFresh Comfo RA-35-2 User Manual

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Page 1

USER’S MANUAL

TwinFresh Comfo

RA1-25 RA1-25-2

SA-35 SA-35-2 SA1-35 SA1-35-2

RA-35 RA-35-2 RA1-35 RA1-35-2

RA-50 RA-50-2 RA1-50 RA1-50-2

RA-85 RA-85-2 RA1-85 RA1-85-2

Single-room reversible energy

recovery ventilator

Page 2

TwinFresh Comfo

CONTENTS

Safety requirements ....................................................................................................................................2

Purpose ...............................................................................................................................................................4

Delivery set .......................................................................................................................................................4

Designation key .............................................................................................................................................5

Technical data .................................................................................................................................................5

Unit design and operating principle ................................................................................................8

Mounting and set-up ..............................................................................................................................10

Connection to power mains ..............................................................................................................15

Ventilator control .......................................................................................................................................17

Technical maintenance ..........................................................................................................................19

Troubleshooting .........................................................................................................................................21

Storage and transportation regulations ...................................................................................... 21

Manufacturer’s warranty ....................................................................................................................... 22

Acceptance certiﬁcate ........................................................................................................................... 23

Seller information ......................................................................................................................................23

Installation certiﬁcate ..............................................................................................................................23

Warranty card ...............................................................................................................................................23

The user’s manual consisting of the technical details, operating instructions and technical speciﬁcation applies to the installation and mounting of the single-room energy regeneration reversible ventilator TwinFresh Comfo (hereinafter referred to as «ventilator» or «unit» as mentioned in the «Safety Requirements» and «Manufacturer’s Warranty» sections as well as in warnings and information blocks).

SAFETY REQUIREMENTS

• Read the user’s manual carefully prior to installing and operating the unit.

• Fulﬁl 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!

UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS

• Disconnect the unit from power mains prior to any installation operations.

• Unpack the unit with care.

• Do not lay the power cable of the unit in close

proximity to heating equipment.

• 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.

• While installing the unit follow the safety regulations speciﬁc to the use of electric tools.

• The unit must be grounded!

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• 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.

UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS

• Do not allow children to operate the unit.

• Do not store any explosive or highly ﬂammable

substances in close proximity to the unit.

• Do not open the unit during operation.

• Do not wash the unit with water.

• Protect the electric parts of the unit against

ingress of water.

• Disconnect the unit from power mains prior to any technical maintenance.

• When the unit generates unusual sounds, odour or emits smoke disconnect it from power supply and contact the Seller.

• Do not direct the air ﬂow produced by the unit towards open ﬂame or ignition sources.

• Do not block the air duct when the unit is switched on.

• Do not sit on the unit and avoid placing foreign objects on it.

THE PRODUCT MUST BE COLLECTED SEPARATELY AT THE END OF SERVICE LIFE.

DO NOT DISPOSE OF AS UNSORTED MUNICIPAL WASTE.

• In case of continuous operation of the unit periodically check the security of mounting.

• Use the unit only for its intended purpose.

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TwinFresh Comfo

PURPOSE

The ventilator is designed to ensure continuous mechanical air exchange in ﬂats, cottages, hotels, cafes and other domestic and public premises.

The ventilator is equipped with a ceramic regenerator that enables supply of fresh ﬁltered air heated by means of extract air heat energy

regeneration.

The ventilator is designed for wall ﬂush mounting.

The telescopic air duct design enables its installation in the walls with various thickness, see the table below:

Wall thickness Ventilator model

300 mm - 570 mm (11 13/16’’ - 22 7/16”) RA1-25 120 mm - 500 mm (4 3/4’’ - 19 11/16”) RA1-25-2

SA-35 SA1-35 RA-35

250 mm - 470 mm (9 13/16’’ - 18 1/2”)

120 mm - 430 mm (4 3/4’’ - 16 15/5”)

120 mm - 470 mm (4 3/4’’ - 18 1/2”)

RA1-35 RA-50 RA1-50 RA-85 RA1-85

SA-35-2 SA1-35-2

RA-35-2 RA1-35-2 RA-50-2 RA1-50-2 RA-85-2 RA1-85-2

The unit is rated for continuous operation. Transported air must not contain any ﬂammable or explosive mixtures, evaporation of chemicals, sticky substances, ﬁbrous materials, coarse dust,

soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust, pathogenic germs).

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.

DELIVERY SET

Name Number

Ventilator 1 item Remote control 1 item Fastening set 2 packs User's manual 1 item Mounting hood installation instruction 1 item Packing box 1 item

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DESIGNATION KEY

TwinFresh Comfo R A 1 - 25 - 2

Ventilation hood model

_ - EH ventilation hood 2 - EH 2 ventilation hood for thin walls

Rated air capacity [m

Front panel modification

_ - decorative grille 1 - ﬂat front panel

Automation type

A - integrated automation and control system

Air duct cross section

R — round S - square

Comfo Series

TECHNICAL DATA

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 %.

The ventilator is rated as a class I electric appliance. Hazardous parts access and water ingress protection rating IP24. The unit design is constantly improved, so some models may slightly diﬀer from the ones depicted herein.

/h]

VENTILATOR TECHNICAL DATA

TwinFresh Comfo RA1-25, TwinFresh Comfo RA1-25-2

Speed I II III

Unit voltage [V /50 (60) Hz] 1~100-240

Air capacity [m

/h] (CFM) 7 (4) 15 (9) 24 (14)

Power [W] 3.50 3.95 5.32

Current [A] 0.023 0.026 0.036

RPM 1190 1330 2420

Noise level, 1 m [dB(A)] (Sones) 31 (0.9) 35 (1.3) 43 (2.5)

Noise Level, 3 m [dB(A)] (Sones) 22 (0.4) 25 (0.5) 33 (1.1)

Outdoor noise attenuation [dB(A)] (Sones) 16 (0.4)

Heat recovery eﬃciency up to 85 %

TwinFresh Comfo RA-35, TwinFresh Comfo RA1-35, TwinFresh Comfo RA-35-2, TwinFresh Comfo RA1-35-2

Speed I II III

Unit voltage [V/50 (60) Hz] 1~100-240

Air capacity [m

/h] (CFM) 10 (6) 20 (12) 30 (18)

Power [W] 3.93 4.39 5.10

Current [A] 0.023 0.026 0.032

RPM 745 1075 1670

Noise level, 1 m [dB(A)] (Sones) 27 (0.6) 32 (1.0) 38 (2.0)

Noise Level, 3 m [dB(A)] (Sones) 18 (0.4) 23 (0.5) 28 (0.7)

Outdoor noise attenuation [dB(A)] (Sones) 17 (0.4)

Heat recovery eﬃciency up to 90 %

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TwinFresh Comfo

VENTILATOR TECHNICAL DATA

TwinFresh Comfo RA-50, TwinFresh Comfo RA1-50, TwinFresh Comfo RA-50-2, TwinFresh Comfo RA1-50-2

Speed I II III

Unit voltage [V/50 (60) Hz] 1~100-240

Air capacity [m

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 eﬃciency up to 90 %

Speed I II III

Unit voltage [V /50 (60) Hz] 1~100-240

Air capacity [m

Power [W] 4.74 6.56 9.65

Current [A] 0.034 0.050 0.071

RPM 1000 1500 2045

Noise level, 1 m [dB(A)] (Sones) 29 (0.8) 35 (1.5) 44 (3.5)

Noise Level, 3 m [dB(A)] (Sones) 19 (0.4) 25 (0.7) 34 (1.4)

Outdoor noise attenuation [dB(A)] (Sones) 18 (0.4)

Heat recovery eﬃciency up to 90 %

Speed I II III

Unit voltage [V/50 (60) Hz] 1~100-240

Air capacity [m

Power [W] 4.54 5.18 6.10

Current [A] 0.026 0.031 0.037

RPM 851 1330 1715

Noise level, 1 m [dB(A)] (Sones) 28 (0.7) 33 (1.1) 39 (2.0)

Noise Level, 3 m [dB(A)] (Sones) 19 (0.4) 24 (0.5) 29 (0.7)

Outdoor noise attenuation [dB(A)] (Sones) 18 (0.4)

Heat recovery eﬃciency up to 88 %

/h] (CFM) 14 (8) 28 (16) 54 (32)

TwinFresh Comfo RA-85, TwinFresh Comfo RA-1-85, TwinFresh Comfo RA-85-2, TwinFresh Comfo RA1-85-2

/h] (CFM) 36 (21) 59 (35) 85 (50)

TwinFresh Comfo SA-35, TwinFresh Comfo SA1-35, TwinFresh Comfo SA-35-2, TwinFresh Comfo SA1-35-2

/h] (CFM) 12 (7) 25 (15) 37 (22)

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Drawing for ventilators with round

air duct cross section

OVERALL DIMENSIONS OF VENTILATORS

Drawing for ventilators with square

air duct cross section

D1 D2 A1

The outer ventilation hood is presented schematically

Model

TwinFresh Comfo RA1-25 -

TwinFresh Comfo RA1-25-2 -

TwinFresh Comfo RA-35

TwinFresh Comfo RA-35-2

TwinFresh Comfo RA1-35 -

TwinFresh Comfo RA1-35-2 -

TwinFresh Comfo RA-50 TwinFresh Comfo RA-85

TwinFresh Comfo RA-50-2 TwinFresh Comfo RA-85-2

TwinFresh Comfo RA1-50 TwinFresh Comfo RA1-85

TwinFresh Comfo RA1-50-2 TwinFresh Comfo RA1-85-2

TwinFresh Comfo SA-35

TwinFresh Comfo SA-35-2

TwinFresh Comfo SA1-35 -

TwinFresh Comfo SA1-35-2 -

(8 3/8’’)

The outer ventilation hood is presented schematically

Overall dimensions [mm] (inches)

A1 A2 B B1 L D1 D2 C1 C2

213

205

(8 1/16’’)50(1 15/16’’)

205

(8 1/16’’)50(1 15/16’’)

- -

240

(9 7/16’’)

240

(9 7/16’’)

- -

240

(9 7/16’’)

240

(9 7/16’’)

- -

240

(9 7/16’’)

240

(9 7/16’’)

(3 1/8’’)

(3 3/8’’)

(2 1/4’’)

(2 9/16’’)

300-570

(11 13/16’’ - 22 7/16’’)

120-500

(4 3/4’’ - 19 11/16’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-470

(4 3/4’’ - 18 1/2’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-470

(4 3/4’’ - 18 1/2’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-470

(4 3/4’’ - 18 1/2’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-470

(4 3/4’’ - 18 1/2’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-430

(4 3/4’’ - 16 15/16’’)

250-470

(9 13/16’’ - 18 1/2’’)

120-430

(4 3/4’’ - 16 15/16’’)

107

(4 3/16’’)

107

(4 3/16’’)

132

(5 3/16’’)

132

(5 3/16’’)

132

(5 3/16’’)

132

(5 3/16’’)

157

(6 3/16’’)

157

(6 3/16’’)

157

(6 3/16’’)

157

(6 3/16’’)

- -

103

(4 1/16’’)

103

(4 1/16’’)

128

(5 1/16’’)

128

(5 1/16’’)

128

(5 1/16’’)

128

(5 1/16’’)

153 (6’’)

- -

150

(5 7/8’’)

150

(5 7/8’’)

150

(5 7/8’’)

150

(5 7/8’’)

(5 5/16’’)

A2C1 C2

135

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TwinFresh Comfo

DESIGN AND OPERATING PRINCIPLE

The ventilator consists of a telescopic air duct, a ventilation unit and an outer ventilation hood. Two ﬁlters and a ceramic regenerator are located inside the inner duct of the telescope. The air ﬁlters are designed to purify supply air and prevent ingress of dust and foreign objects into the regenerator and the fan. The ceramic regenerator utilises extract air heat energy to warm up supply air ﬂow. 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 oﬀ during the ventilator standby and prevent air back draft. The ventilation hood must be installed on the outer wall side. It is used for directed air discharge and prevention of ingress of water and other objects

to the ventilator.

VENTILATOR DESIGN

Ventilation unit

Is used to generate air ﬂow by means of the fan. The ventilation unit is covered with a ventilation grille on inner wall side to prevent ingress of foreign objects into the fan. The ventilation unit is equipped with automatic shutters opening when the ventilator is on and closing when it is oﬀ, thus preventing back air ﬂow.

Inner air duct

Inner part of the telescopic air duct.

Filter

Designed to clean supply air ﬂow and prevent ingress of dust and foreign objects to the ventilator. The ﬁlters prevent regenerator clogging.

Outer air duct

Outer part of the telescopic air duct.

Outer ventilation hood

Prevents direct ingress of water

and foreign objects to the ventilator.

TwinFresh Comfo RA1-25 TwinFresh Comfo RA1-25-2

TwinFresh Comfo RA-35 TwinFresh Comfo RA-35-2 TwinFresh Comfo RA1-35 TwinFresh Comfo RA1-35-2 TwinFresh Comfo RA-50 TwinFresh Comfo RA-50-2 TwinFresh Comfo RA1-50 TwinFresh Comfo RA1-50-2 TwinFresh Comfo RA-85 TwinFresh Comfo RA-85-2 TwinFresh Comfo RA1-85 TwinFresh Comfo RA1-85-2

TwinFresh Comfo SA-35 TwinFresh Comfo SA-35-2 TwinFresh Comfo SA1-35 TwinFresh Comfo SA1-35-2

Mounting plate

A mounting plate for installation the ventilation unit on the wall and connecting the ventilator to power supply.

Ceramic regenerator

Utilises extract air heat energy to warm up supply air ﬂow.

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AUTOMATIC SHUTTERS OPERATION

Ventilator is o (the shutters are closed) Ventilator is on (the shutters are opened)

VENTILATOR OPERATION MODES

Ventilator operation 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 the CN7 jumper position. Regeneration — the ventilator operates in reversible mode with heat and humidity recovery.

In Regeneration mode the ventilator operates in two cycles, 70 seconds each.

Cycle I.

Warm stale air is extracted from the room. As it ﬂows through the regenerator, it heats and moisturizes the regenerator, transferring up to 90 % 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 ﬂows through the ceramic regenerator, absorbs accumulated moisture and is heated up to the room temperature. In 70 seconds after the regenerator gets cooled down, the ventilator is switched to air extract mode and the cycle is renewed.

+20 °C

-7 °C

+17 °C

CYCLE I

+20 °C

-10 °C

CYCLE II

+17 °C

-7 °C

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-10 °C

Page 10

MOUNTING AND SETUP

READ THIS USER’S MANUAL CAREFULLY PRIOR TO THE UNIT INSTALLATION.

DO NOT BLOCK THE AIR DUCT OF THE INSTALLED UNIT WITH DUST ACCUMULATING

MATERIALS, SUCH AS CURTAINS, CLOTH SHUTTERS, ETC. AS IT PREVENTS AIR

CIRCULATION IN THE ROOM.

TWINFRESH COMFO RA125 VENTILATOR MOUNTING

1. Prepare a through hole in the outer wall. The hole size and proﬁle is shown in the ﬁgure below.

TwinFresh Comfo

2. Insert the air duct in the wall. On the outer wall the telescopic air duct must protrude for the distance that enables installation of the outer ventilation hood. The distance A is stated in the mounting instruction for the outer ventilation hood. While mounting the telescopic air duct be sure to provide the minimum slope 3 mm downwards from outside.

110

( 4 ⁄")

While preparing the hole provide a recess for the cable layout to enable connection of several ventilators in series.

3. Fill the gaps between the wall and the telescopic air duct with a mounting foam.

Room Outdoors

min 3 mm

4. Install the ﬁlter, the ceramic regenerator, another ﬁlter and the air ﬂow rectiﬁer in the consecutive order inside the telescopic air duct.

5. Remove the screw in the bottom part of the ventilator. 6. Remove the front panel of the ventilation unit.

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7. Drill four fastening holes and ﬁx the back cover of the ventilation unit on the wall with fours 4x40 screws and 6x60 dowels from the delivery set. Prior to starting ﬁxation of the back cover of the ventilation unit make arrangements for the power cable layout in accordance to the selected method, see the Connection to Power Mains section, page 20.

HOLE SPACING FOR THE FAN FASTENERS MM [INCHES]

(2 ⁄’’)

8. Connect the contact socket of the switches to the circuit board and install the front panel of the ventilation unit.

150

(5 ⁄’’)

6 ( ¼’’)

4 holes

(2 ⁄’’)

110 ( 4 ⁄’’)

150

(5 ⁄’’)

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TWINFRESH COMFO RA35, RA50 AND RA85 VENTILATOR MOUNTING

1. Prepare a through hole in the outer wall. The hole size and proﬁle is shown in the ﬁgure below.

Model A, mm

TwinFresh Comfo RA-35 Ø 140 Ø 5 ½” TwinFresh Comfo RA-50 Ø 160 Ø 6 ⁄”

A [inches]

TwinFresh Comfo

2. After preparing a through hole in the wall 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 form is shown in the drawing below.

TwinFresh Comfo RA-35

max 180 (max 7 1/16")

max 80

(max 3 1/8")

TwinFresh Comfo RA-50 TwinFresh Comfo RA-85

max 200 (max 7 ⁄")

max 90

(max 3 ⁄")

R90

(R3 9/16")

R100 (R4")

While mounting several ventilators connected in series provide a cavity for the cable layout during the recess preparation to enable series connection of several ventilators.

3. IInsert the air duct in the wall. On the outer wall the telescopic air duct must protrude for the distance that enables installation of the outer ventilation hood. The distance A is stated in the mounting instruction for the outer ventilation hood. While mounting the telescopic air duct be sure to provide the minimum slope 3 mm downwards from outside.

Room Outdoors

min 3 mm

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4. Connect the mounting plate following the Wiring Diagram section, page 20. Drill four fastening holes and ﬁx the mounting plate on the wall with four 4x40 screws and 6x60 dowels from the delivery set. Align the telescopic air duct with respect to the mounting plate and ﬁll 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.

5. Install the ventilation unit on the mounting plate. The ventilation unit is ﬁxed with magnets.

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TWINFRESH COMFO SA35 VENTILATOR MOUNTING

1. Prepare a through hole in the outer wall. The hole size and proﬁle is shown in the ﬁgure below.

160

( 6 5/16")

TwinFresh Comfo

2. After preparing a through hole in the wall 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 form is shown in the drawing below.

TwinFresh Comfo SA-35

max 180

(max 7

/16")

max 80

(max 3

/8")

While mounting several ventilators connected in series provide a cavity for the cable layout during the recess preparation to enable series connection of several ventilators.

Room Outdoors

min 3 mm

4. Install the ﬁlter, the ceramic regenerator, another ﬁlter and the air ﬂow rectiﬁer in the consecutive order inside the telescopic air duct. Connect the mounting plate following the Wiring Diagram section, page 20. Drill four fastening holes and ﬁx the mounting plate on the wall with fours 4x40 screws and 6x60 dowels from the delivery set. Align the telescopic air duct with respect to the mounting plate and ﬁll 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.

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Page 15

5. Install the ventilation unit on the mounting plate. The ventilation unit is ﬁxed with magnets.

DISCONNECT THE UNIT FROM POWER SUPPLY PRIOR TO ANY OPERATIONS WITH

THE UNIT.

INSTALLATION SHALL ONLY BE PERFORMED BY A PROFESSIONAL ELECTRICIAN

QUALIFIED FOR UNASSISTED OPERATIONS WITH ELECTRICAL INSTALLATIONS

UP TO 1000 V AFTER CAREFUL STUDY OF THE PRESENT USER’S MANUAL.

THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE

MANUFACTURER’S LABEL. ANY INTERNAL CONNECTION MODIFICATIONS ARE NOT

ALLOWED AND RESULT IN WARRANTY LOSS.

CONNECTION TO POWER MAINS

The ventilator is rated for connection to a single-phase AC 1~100-240 V/50 (60) Hz. For this purpose the power cable with a plug is connected by the Manufacturer. Connect the ventilator to power mains through the external automatic circuit breaker with a magnetic trip integrated into the ﬁxed wiring system.

VENTILATOR WIRING DIAGRAM

TWINFRESH COMFO RA125

TWINFRESH COMFO RA1252

The jumper between the contacts 1 and 2 or 2 and 3 of the CN7 socket connector determines

air ﬂow direction in Ventilation mode.

• If the jumper connects the contacts 1 and 2, air is extracted from the room in the Ventilation

XS4

XS2 XS1

Ventilator controller

mode (factory setting).

• If the jumper connects the contacts 2 and 3, air is supplied in the Ventilation mode.

XS3

1~100-240 V

50 (60) Hz

TB3

L 1 2 3

TB1

G D + N

TB2

1 2 3

CN7

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Page 16

TwinFresh Comfo

CONNECTION OF SEVERAL VENTILATORS IN SERIES

TWINFRESH COMFO SA35 TWINFRESH COMFO SA352 TWINFRESH COMFO SA135 TWINFRESH COMFO SA1352

TWINFRESH COMFO RA35 TWINFRESH COMFO RA352 TWINFRESH COMFO RA135 TWINFRESH COMFO RA1352

Connection of the ventilators in series enables controlling all the connected ventilators by the ﬁrst ventilator and the common remote control. To connect the ventilators in series connect the Output contact socket of the ﬁrst ventilator mounting plate with the Input contact socket of the second ventilator mounting plate. Connect the second ventilator with the third ventilator in the same way, etc. Maximum 10 ventilators may be connected in series. For easy electric installation use a ﬁve-wire cable (not included into the delivery set) with the cable cross section not below 0.5 mm2. The cable must be rated for operation in an alternating current power supply with the country-speciﬁc mains voltage.

Disconnect the power cable while connecting the second, third, etc. ventilator in series.

CONNECTION OF SEVERAL VENTILATORS IN SERIES BACKSIDE VIEW

TWINFRESH COMFO RA50 TWINFRESH COMFO RA502 TWINFRESH COMFO RA150 TWINFRESH COMFO RA1502

TWINFRESH COMFO RA85 TWINFRESH COMFO RA852 TWINFRESH COMFO RA185 TWINFRESH COMFO RA1852

TO THE NEXT

VENTILATOR

Output

L G

D N

Input

L G

D N

Output

D N

Input

L G

D N

Ventilator no.2 Ventilator no.1

Output

D N

ground

terminal

ground

terminal

Input

D N

Output

L G

D N

ground

terminal

ground

terminal

Input

L G

D N

1~100-240 V/50 (60) Hz

The ﬁrst ventilator controls all the connected ventilators. The jumper between the contacts 1 and 2 or 2 and 3 of the CN7 socket connector determines a ﬂow direction in

Ventilation mode.

• If the jumper connects the contacts 1 and 2, air is extracted from the room in the Ventilation mode (factory

setting).

• If the jumper connects the contacts 2 and 3, air is supplied in the Ventilation mode. The jumper position at each ventilator connected in series determines a rotation direction in Ventilation mode and an operating phase in Regeneration mode. I.e. if the jumper at the ﬁrst ventilator connects the contacts 2 and 3 and the jumper at the second ventilator connects the contacts 1 and 2, the ventilators operate in opposite directions in Regeneration mode.

Ventilator

controller

+ N

TB2

CN7

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L G

G D

D +

+ N

Page 17

CONNECTION OF MORE THAN 10 VENTILATORS IN SERIES

In case of connection of more than 10 ventilators the ventilator 11 is energized not through the previous ventilator but from power mains (L and N

terminals).

The control signals G and D from the 10th ventilator are transferred through the cable 2 x 0.5 mm

. Connect the ventilators no. 12…20 to the ventilator no. 11 in the same way as the ventilators no. 1…10. All the connected ventilators are controlled with the ventilator no. 1.

ALL THE CONNECTED IN SERIES VENTILATORS MUST BE

GROUNDED!

Ventilator no.1 Ventilator no.10 Ventilator no.11

1~100-240 V

50 (60) Hz

Input

L G

D N

Output

L G

D N

Input

D N

Output

D N

1~100-240 V

50 (60) Hz

Input

D N

Output

D N

TO THE NEXT VENTILATOR

VENTILATOR CONTROL

The ventilator is operated with a remote control or the buttons on the ventilator casing, see the ﬁgure below. The operation buttons on the ventilator casing have limited functionality: only the second and the third speed can be activated. Three of the four

modes of ventilation may be set.

The remote control has wider control capabilities.

CONTROL BUTTONS ON THE VENTILATOR CASING

Third speed

The ventilator operates with maximum air ﬂow.

The fan is o

The ventilator does not operate. The shutters are closed.

Second speed

The ventilator operates with 50 % air ﬂow.

Ventilation mode

The ventilator operates either in extract or supply mode with no reference to the CN7 jumper position.

Regeneration mode

In this mode the ventilator switches between supply and extract every 70 seconds. Heat recovery is performed in this mode.

Supply mode

All the connected in series ventilators operate in supply mode with no reference to the CN7 jumper position.

The buttons on the casing can be arranged in a diﬀerent sequence depending on the ventilator model. Consider the information on the stickers near the control buttons while using

Speed switch

the buttons.

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Ventilation mode switch

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TwinFresh Comfo

Turning ventilator ON/OFF

Speed selection

Passive air supply

The shutters are open, the fan does not run.

Ventilation

The ventilator operates either in extract or supply mode with no reference to the CN7 jumper position.

Humidity set point setting

— operation of all the ventilators connected in series is determined by the CN7 jumper position.

REMOTE CONTROL

Night mode

The ventilator switches to the ﬁrst speed in the darkness.

Air supply

The unit operates in supply mode with no reference to the CN7 jumper position.

Heat recovery

The ventilator switches between supply and extract every 70 seconds. Heat recovery is performed in this mode.

REMOTE CONTROL

Set the speed switch to

position and the ventilation mode switch to position to enable remote control of the ventilation unit.

1. Turning the ventilator ON/OFF

ON/OFF

2. Night mode

ON/OFF

If the Night mode is activated, the ventilator switches to the ﬁrst speed in the dark time of the day when the light is turned oﬀ. Activation of the night mode is conﬁrmed by a long sound signal. Exiting the night mode is conﬁrmed by a short sound signal.

3. Speed changeover

First speed

Second speed

Third speed

4. Operation mode

Natural air supply mode. The room is ventilated in the natural way, the fan is oﬀ.

Air supply mode. Air is supplied to the room at a set speed. All connected in series ventilators operate in air supply mode with no

reference to the CN7 jumper position.

Ventilation mode. Air is extracted (factory setting) or supplied at a selected speed. All the ventilators connected in series operate depending on the CN7 jumper position.

Regeneration mode. The ventilator operates 70 seconds in supply mode and then 70 seconds in extract mode. Heat recovery is performed in this mode.

5. Humidity Control mode. The humidity control may be activated in the Regeneration mode only by pressing one of the humidity control buttons. In the Humidity Control

mode the ventilator measures the humidity of the extract air. If the humidity exceeds the selected set point the ventilator switches to a higher speed. After reaching the required level of the ventilator switches to a lower speed. Press one of the speed selection buttons to deactivate the Humidity Control mode.

Setting humidity set point — 45 %.

Setting humidity set point — 55 %.

Setting humidity set point — 65 %.

HUMIDITY CONTROL FUNCTION MAY BE ACTIVATED WITH THE REMOTE CONTROL ONLY!

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Page 19

TECHNICAL MAINTENANCE

DISCONNECT THE VENTILATOR FROM POWER SUPPLY PRIOR

TO ANY MAINTENANCE OPERATIONS.

Maintenance of the ventilator means regular cleaning of the ventilator surfaces of dust and cleaning or replacement of the ﬁlters.

MAINTENANCE

1. Fan inspection (once per year).

Take oﬀ the ventilation unit and clean the fan blades. To remove dust use a soft brush, cloth or a vacuum cleaner. Do not use water, abrasive detergents, solvents, sharp objects for cleaning. Clean the impeller blades once a year.

2. Regenerator and lter maintenance (3-4 times per year).

1. Remove the air ﬂow rectiﬁer.

2. Remove the ﬁlter upstream of the regenerator.

3. Pull the specially designed cord to remove the regenerator from the air duct.

4. Be careful while pulling the regenerator to avoid its damage.

5. Remove the ﬁlter downstream of the regenerator.

Clean the ﬁlters as often as required, but at least 3 times a year.

• After the expiry of time to ﬁlter cleaning (90 days) the ventilator generates periodically a sound signal as a reminder of the need to replace or clean the ﬁlters.

• Wash the ﬁlters and let them get dry. Install dry ﬁlters in the air duct.

• Vacuum cleaning is allowed.

• The ﬁlter rated service life is 3 years.

• For new ﬁlters contact the Seller.

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TwinFresh Comfo

Even regular technical maintenance may not completely prevent dirt accumulation on the regenerator assemblies.

• Subject the regenerator to regular cleaning to ensure high heat recovery eﬃciency.

• Vacuum clean the regenerator not less than once a year.

To reset the hour meter install the ﬁlters and the regenerator into the ventilator and then press and hold the button for 10 sec. until you hear a long sound signal.

3. Replacement of the remote control battery (if necessary).

Replace the battery of the remote control after prolonged use. No response of the unit for pressing the remote control buttons indicates the need to replace the battery.

Battery type: CR2025.

To replace the battery of the remote control remove the battery holder with a battery. Replace the battery and install the holder with a new battery back to the remote control.

CR2025 3V

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Page 21

TROUBLESHOOTING

POSSIBLE REASONS AND TROUBLESHOOTING

Problem Possible reasons Troubleshooting

When switching on the

ventilator the fan does not

start.

Circuit breaker tripping during

the ventilator start-up.

Low air ﬂow.

The ventilator generates

sound signals.

Noise, vibration.

No power supply.

The motor is jammed, the impeller blades are clogged.

Overcurrent as a result of short circuit in the electric circuit.

Low set fan speed. Set higher speed.

The ﬁlters, the fan or the regenerator are clogged.

The ﬁlter timer is actuated. Refer to the Technical maintenance section, clause 2.

The impeller is clogged. Clean the impeller.

Loose screw connection of the ventilator casing or the ventilation hood.

Make sure the power supply line is connected correctly, otherwise troubleshoot the connection error.

Turn the ventilator oﬀ. Troubleshoot the motor jam and the impeller clogging. Clean the blades. Restart the ventilator.

Turn the ventilator oﬀ. Contact the Seller for further information.

Clean or replace the ﬁlters. Clean the fan and the regenerator.

Tighten the screws of the ventilator or the outer ventilation hood.

STORAGE AND TRANSPORTATION REGULATIONS

Store the unit in the manufacturer’s original packing box in a dry closed ventilated premise with temperature range from +5 °C (+ 41 ˚F) to + 40 °C

(104 ˚F).

Storage environment must not contain aggressive vapours and chemical mixtures provoking corrosion, insulation and sealing deformation. Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit. Follow the handling requirements applicable for the particular type of cargo. The unit can be carried in the original packing by any mode of transport provided proper protection against precipitation and mechanical damage. Avoid sharp blows, scratches or rough handling during loading and unloading.

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TwinFresh Comfo

MANUFACTURER’S WARRANTY

The manufacturer hereby warrants normal operation of the unit for 24 months after the retail sale date provided the user’s observance of the

transportation, storage, mounting and operation regulations.

Should any malfunctions occur in the course of the unit operation through the Manufacturer’s fault during the guaranteed period of operation the user

is entitled to elimination of faults by the manufacturer by means of warranty repair at the factory free of charge.

The warranty repair shall include work speciﬁc to elimination of faults in the unit operation to ensure its intended use by the user within the guaranteed

period of operation.

The faults are eliminated by means of replacement or repair of the unit components or a speciﬁc part of such unit component.

The warranty repair does not include:

• routine technical maintenance

• unit installation/dismantling

• unit setup

To beneﬁt from warranty repair the user must provide the unit, the user’s manual with the purchase date stamp and the payment document certifying

the purchase.

The unit model must comply with the one stated in the user’s manual.

Contact the Seller for warranty service.

The manufacturer’s warranty does not apply to the following cases:

• User’s failure to submit the unit with the entire delivery package as stated in the user’s manual including submission with missing component parts previously dismounted by the user.

• Mismatch of the unit model and the brand name with the information stated on the unit packing and in the user’s manual.

• User’s failure to ensure timely technical maintenance of the unit.

• External damage to the unit casing (excluding external modiﬁcations as required for installation) and internal components caused by the user.

• Redesign or engineering changes to the unit.

• Replacement and use of any assemblies, parts and components not approved by the manufacturer.

• Unit misuse.

• User’s violation of the unit installation regulations.

• User’s violation of the unit control regulations.

• Unit connection to the power mains with a voltage diﬀerent from the one stated in the user’s manual.

• Unit breakdown due to voltage surges in the power mains.

• Discretionary repair of the unit by the user.

• Unit repair by any persons without the manufacturer’s authorization.

• Expiration of the unit warranty period.

• User’s violation of the unit transportation regulations.

• User’s violation of the unit storage regulations.

• Wrongful actions against the unit committed by third parties.

• Unit breakdown due to circumstances of insuperable force (ﬁre, ﬂood, earthquake, war, hostilities of any kind, blockades).

• Missing seals if provided by the user’s manual.

• Failure to submit the user’s manual with the unit purchase date stamp.

• Missing payment document certifying the unit purchase.

FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE

A LONG AND TROUBLEFREE OPERATION OF THE UNIT.

USERS’ WARRANTY CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON PRESENTATION OF THE

UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL WITH THE PURCHASE DATE STAMP.

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Page 23

ACCEPTANCE CERTIFICATE

Unit Type Single-room reversible energy recovery ventilator

Model TwinFresh Comfo _________

Serial Number

Manufacture Date

Is compliant with the technical speciﬁcations and is recognized as serviceable.We hereby declare that the product complies with the essential

protection requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/EEC and Low Voltage Directive 2006/95/EC, 73/23/EEC and

CE-marking Directive 93/68/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility. This certiﬁcate is

issued following test carried out on samples of the product referred to above.

Quality Inspector’s Stamp

SELLER INFORMATION

Seller

Address

Phone Number

E-mail

Purchase Date

This is to certify acceptance of the complete ventilator delivery with the user’s manual. The warranty terms are acknowledged and accepted.

Customer’s Signature

INSTALLATION CERTIFICATE

The single-room reversible energy regeneration ventilator TwinFresh Comfo _________ has been connected to

power mains pursuant to the requirements stated in the present user’s manual.

Company Name

Address

Phone Number

Installation Technician's Full Name

Installation Date: Signature:

The ventilator has been installed in accordance with the provisions of all the applicable local and national construction, electrical and technical codes and standards. The ventilator operates normally as intended by the manufacturer.

Signature:

Unit Type Single-room reversible energy recovery ventilator

Model TwinFresh Comfo _________

Serial Number

Manufacture Date

Purchase Date

Warranty Period

Seller

Seller’s Stamp

Installation Company Stamp

WARRANTY CARD

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Seller’s Stamp

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V91EN-03