Flexit Roomie Dual Parts list manual

Roomie Dual
116027EN-06
2021-08
Assembly and Operation Instructions
Heat recovery single-room reversible ventilation unit
ART. NR.:
115999

2
ROOMIE DUAL

3
ROOMIE DUAL
Contents
1. Purpose...................................................................................................................................................................................................................... 6
2. Delivery set......................................................................................................................................................................................................... 6
3. Technical data............................................................................................................................................................................................... 6
4. Product desciption.............................................................................................................................................................................. 8
5. Mounting and set-up................................................................................................................................................................... 10
6. Connection to power mains and control............................................................................................. 14
7. Technical maintenance...........................................................................................................................................................22
8. Troubleshooting...................................................................................................................................................................................24
9. Storage and transportation regulations...............................................................................................24
10. CE Declaration of conformity.....................................................................................................................................25

4
ROOMIE DUAL
!
SAFETY REQUIREMENTS
• Read the user’s manual carefully prior to
installing and operating the unit.
• All user’s manual requirements as well as
the provisions of all the applicable local
and national construction, electrical, and
technical norms and standards must be
observed when installing and operating
the unit.
• Disconnect the unit from the power
supply prior to any connection, servicing,
maintenance, and repair operations.
• 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 the User’s
manual must be turned over to the
receiving operator.
• Check the unit for any visible damage of
the impeller, the casing, and the grille
befare starting installation. The casing
internals must be free of any foreign
objects that can damage the impeller
blades.
• While mounting the unit, avoid
compression of the casing! Deformation
of the casing may result in motor jam and
excessive noise.
• Misuse of the unit and any unauthorised
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• Do not expose the device to adverse
atmospheric agents (rain, sun, etc.).
• Transported air must not contain any
dust or other solid impurities, sticky
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• Do not use the unit in a hazardous or
explosive environment containing spirits,
gasoline, insecticides, etc
• Do not close or block the intake or extract
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ȵRZ
• Do not sit on the unit and do not put
objects on it.
• The information in this user’s manual was
correct at the time of the document’s
preparation.
• The Company reserves the right to modify
the technical characteristics, design,
RUFRQȴJXUDWLRQRILWVSURGXFWVDWDQ\
time in order to incorporate the latest
technological developments.
• The connection to the supply mains
must be made through a means of
disconnection, which is incorporated in
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local wiring rules.
• Precautions must be taken to avoid the
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appliances.
WARNING! Similar to the use of any other
household electrical appliances when op-
erating this fan, the following basic rules
must be followed:
• Never touch the unit with wet or damp
hands.
• lf the supply cord is damaged, it must be
replaced by the manufacturer, its service
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order to avoid a safety hazard.

5
ROOMIE DUAL
!
CAUTION! When a text bears this
symbol, it means that personal injury
or serious damage to the equipment
may result if the instructions are not
followed.
NB! When a text bears this symbol,
damage to equipment or poor
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of not following the instructions.
This user’s manual is a main operating document
intended for technical, maintenance, and operating
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The manual contains information about purpose, tech-
nical details, operating principle, design, and installation
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and should be able to work in accordance with work-
place safety rules as well as construction norms and
standards applicable in the territory of the country.
This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appli-
ance by a person responsible for their safety.
Children should be supervised to ensure that they do not play
with the appliance.
The product is not suitable for use by children. Children must
not be allowed to play with the appliance. Children must not
carry out cleaning or maintenance without supervision.
Our products are subject to continuous development and we
therefore reserve the right to make changes.
We also disclaim liability for any printing errors that may occur.
The right to give notice of lack of conformity
applies to this product in accordance with
the existing terms of sale, provided that the
product is used correctly and maintained.
Filters are consumables.
The symbol on the product shows that this product must
not be treated as household waste. It must be taken to
a collection point for recycling electrical and electronic
equipment.
By ensuring correct disposal of the equipment, you will
contribute to preventing negative consequences for
the environment and health that incorrect handling
may entail. For further information on recycling of this
product, please contact your local authority, your refuse
collection company or the company from which you
purchased it.
Notice of lack of conformity as a result of incorrect or
defective installation must be submitted to the installa-
tion company responsible. The right to give notice of lack
of conformity may lapse if the system is used incorrectly
or maintenance is grossly neglected.

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ROOMIE DUAL
3. Technical data
The temperature in the room where the indoor unit of
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tion buildup). If the conditions for using the ventilator
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ventilator. Provide fresh air supply through windows.
The temperature of the transported air should be in the
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The unit is rated as a class II electric appliance.
Roomie Dual
Speed I II III
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$LUȵRZH[KDXVWPRGHP3/h) 20 40 60
Sound pressure Lp(A) 3m dB 20 32 39
Sound power Lw(A) dB 37 49 56
Power consumption (W) 2,9 4,6 6,8
Current (A) 0,031 0,048 0,096
Fan speed (o/min.) 1030 1760 2690
Sound absorption Dn,e,w (C;Ctr) 35 (-1;-4)
Voltage (V/50-60Hz) 100-240V
Filter class G3
Ingress protection IP 24
Operating temperature* -15°C to +40°C
Wall thickness 280-500 mm
1. Purpose
The ventilator is designed to ensure continuous mechan-
ical air exchange for singel rooms in houses, apartments
and commercial buildings.
The unit is intended for indoor use.
The unit is equipped with a ceramic regenerator that
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extract air heat energy regeneration.
The unit is designed for through-the-wall-mounting.
!
The choice of unit installation location
must prevent unauthorized access by
unattended children.
The unit is rated for continuous operation.
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explosive mixtures, evaporation of chemicals, sticky
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particles or environments favourable for the formation
of hazardous substances (toxic substances, dust, patho-
genic germs).
!
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is outside the temperature range
stated in the technical data.
2. Delivery set
Name Number
Indoor unit of the ventilator 1 item
Air duct 1 item
$LUȵRZVHSDUDWRU 3 items
Assembled cartridge 1 item
Outer ventilation hood 1 item
Remote control 1 item
Cardboard template 1 item
Fastening set 2 packs
User’s manual 1 item
Packing box 1 item
The unit design is regularly improved, so some models
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manual.
*Variations in temperature and humidity
may lead to freezing at higher tempera-
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In the event of possible freezing, take the
cartridge out with the regenerator and
fan. Let it thaw at room temperature.
Wait to start
the unit if the temperature
and humidity conditions are unchanged
.
Alternatively, chose ventilation mode
which reduces indoor humidity and the
risk of freezing. The air is then continu-
ously ventilated in one direction.
For Roomie Dual; activating the built-in
humidity sensor will activate both fans in
exhaust mode at maximum speed until
the humidity level is reduced to below
set point.

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ROOMIE DUAL
Ait duct length
Roomie Dual 280-500
235 71
285
207
85
137
138
Roomie Dual
Overall dimensions of the indoor unit
Standard duct is 500 mm which can be cut to min 280
mm
234
284
160
310
260
84
64
280-500

8
ROOMIE DUAL
4. Product desciption
Roomie Dual
The ventilator consists of an indoor unit with a decora-
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of dust and foreign objects into the cartridge.
The cartridge is a basic functioning part of the ventilator.
It consists of two fans and a regenerator.
The outer ventilation hood is used to prevent direct
ingress of water and other objects to the ventilator.
Unit design
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Designed for separation of
supply and exhaust air streams.
Outer ventilation hood
Prevents ingress of water and
foreign objects into the ventilator.
Air duct
Plastic air duct
Cartridge
Construction consisting of fans and
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provides air regeneration.
Back part of the indoor unit
The assembly unit includes a circuit
board and basic control units
located on the side of the indoor
unit.
Filters
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dust and foreign objects. Prevent contamina-
tion of the regenerator.
Front part of the indoor unit
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The front part of the unit is
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ROOMIE DUAL
Cartridge design
Regenerator
Provides extract air
energy regeneration for
warming up of supply air
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Fan
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Socket connector
Provides connection to the
control board.
The cartridge is a solid block and cannot be dismantled.
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be easily removed for maintenance purposes.
The socket connector routed from the cartridge is
connected to the control board in the back part of the
indoor unit.
Unit operation modes
The ventilator has three operation modes:
Regeneration. One of the fans of the ventilator operates
in extract mode and the other one in supply mode.
The fans change their rotation direction every 70
seconds.
Ventilation. One fan operates in the air extract mode
and the other fan operates in the air supply mode at set
speed. The fans do not change their rotation direction.
Air extract. Both fans operate in air extract mode at set
speed.
In case of a sensor activation the ventilation unit follows
one of two functioning algorithms to be set during setup
of the ventilation unit via the DIP switch. For details, see
page 83.
Supply air
Extract air
Exhaust air
Outdoor air
Extract air
Supply air
Outdoor air
Exhaust air
70 seconds
70 seconds

10
ROOMIE DUAL
5. Mounting and set-up
!
Read the user’s manual prior to moun-
ting the unit.
Do not block the air duct of the instal-
led unit with dust accumulating mate-
rials, such as curtains, cloth shutters,
etc. As it prevents air circulation in the
room.
1. Prepare a round core hole in the outer wall.
Recommended hole dimension is Ø180 mm.
While preparing a core hole it is recommended to
make preparations for layout of the power cable and
other required cables.
2. Insert the air duct in the wall. For ease of instal-
lation use the polystyrene wedges included in the
delivery. The air duct end must protrude for the
distance that enables installation of the outer venti-
lation hood.
0 - 3 mm
min 3 mm
Insert the air duct into the wall as shown in the
picture on the left.
Install the air duct with the minimum slope of 3 mm
outward.
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with the wall.
Adjustment of the air duct length is possible before
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mounting and in the second case be sure to have
enough access to cut the air duct length after its
installation.
Make sure that moisture cannot permeate into the
opening in the external wall. Use a suitable sealant.
Fill the gaps between the air
duct and the wall with
mounting foam, or similar.
Polystyrene wedge

11
ROOMIE DUAL
3. Stick the delivered cardboard master plate on the
indoor wall using a mounting tape.
The large opening in the master plate must be axially
aligned with the air duct.
For aligning of the master plate with respect to the
horizon line it is recommended to use a builder’s
level.
Then mark the fastening holes for installation of the
supplied dowels and drill the holes to a required
depth.
Route the power cable from the ventilator outside
through the specially marked opening on the master
plate.
4. Press the side latches to detach the front part of
the indoor unit from its back part.

12
ROOMIE DUAL
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below. Be sure the pointer is directed upwards. Then
5. Fix the back part of the indoor unit on the wall
with the screws supplied with the mounting kit of the
Insert the wires under the
cable clamp and connect the
socket connector to the circuit
board.
The mark must be
directed upwards.
ventilator.
Remove the two retaining screws from the left trans-
parent cover to enable access to the terminals.
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the socket connector to the circuit board.

13
ROOMIE DUAL
7. Install the front part of the indoor unit.
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outside.
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in the air duct until it bumps up the cartridge.
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air duct face, remove it from the air duct and cut the
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protrudes to some distance.
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duct.
9. Install the outer ventilation hood.

14
ROOMIE DUAL
6. Connection to power mains and control
!
Disconnect the unit from power supp-
ly prior to any electric installation
operations.
!
The rated electrical parameters are
stated on the rating plate. Any tampe-
ring with the enternal connections is
prohibited and will void the warranty.
Changing the cable inlet.
It is possible to change the cable inlet from underneath
the unit to the back. Any connections in the terminal
according to the wiring diagram.
Cable clamp Cable clamp
The unit is rated for connection to single-phase AC
100-240 V/ 50-60 Hz power mains.
The units shall be installed according to current laws and
regulations.
Signal cables shall be shielded and with a minimum
cross section of 0.25 mm2.
Connect the units to power mains in compliance with the
wiring diagram, page 81.
!
The following installation shall only be
performed by a professional electrici-
an according the instruction in the
user manual.

15
ROOMIE DUAL
Wiring diagram
The ventilator design enables connecting any external
controls with a normally opened contact (NO-contact),
such as an external CO2sensor, humidity sensor, relay
switch, etc.
When the contacts of the NO contact of the external
device are closed, the unit changes to maximum speed.
An analogue sensor with output voltage 0-10 V is also
compatible with the unit. When this is activated the
ventilator switches to high speed.
The ventilators can be connected in series and in parallel
with a central control by the master ventilator.
In case of in series or in parallel connection of several
ventilators power is supplied either from a previous ven-
tilator or from power mains.
N
L
N
L (~)
N (~)
L
In
Gnd
NO1
NO2
+12V
Gnd
Out
Power
1~100-230 V
50-60 Hz
Power to
the next
ventilator
Input for 0-10 V
analouge sensor
Control signal output
to the next ventilator
NO contact of
an external control unit

16
ROOMIE DUAL
Wiring diagram for in series connection
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
N
L
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
Power input
100-240 V/50-60 Hz
to the next ventilator
Master Slave 1 Slave N
Master Slave 1 Slave N
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
N
L
N
L
N
L
In
Gnd
Gnd
Out
NO1
NO2
+12V
Power input
100-240 V/50-60 Hz
to the next ventilator
Wiring diagram for in parallel connection

17
ROOMIE DUAL
Ventilator set-up
12345678
Open the rubber plug
DIP-switch
under the plug
Prior to operating set up the ventilator using the DIP-
switch. It is located on the controller circuit board. To
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indoor unit and uplift the rubber plug that covers the
switch.
Position Function
1
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The switch position enables deactivation of the unit with the button on the side control panel.
1
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The switch position disables deactivation of the unit with the button on the side control panel.
Boost mode setup.
When the humidity sensor or the external relay is triggered, one of two operation algorithms starts.
Position Function
2
In this position the ventilator runs in the extract mode at the third speed (both fans run in
the extract mode).
2
In this position the ventilator switches to maximum speed without changing the operation
mode.

18
ROOMIE DUAL
Humidity sensor setpoint.
The humidity sensor measures the extract air humidity. If
the extract air humidity is above the set point, the ventilator
switches to Speed III. As humidity drops down to the set point,
the ventilator changes to pre-set speed after elapsing of the
time set on the delay timer.
Position Function
345
Humidity control is OFF
345
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345
+XPLGLW\VHWSRLQW
345
+XPLGLW\VHWSRLQW
345
+XPLGLW\VHWSRLQW
345
+XPLGLW\VHWSRLQW
Position Function
67
Time delay 0 min
67
Time delay 5 min
67
Time delay 15 min
67
Time delay 30 min
Delay timer.
During activation of the humidity sensor or any other control
unit the unit switches to higher speed. After standardization
of the indoor humidity or any other air parameters the unit
returns to a previously set mode after set time period.

19
ROOMIE DUAL
Unit control
The ventilation unit may be operated with the following
controls:
- infra-red remote controller;
- control buttons located on the side wall of the indoor
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Buttons on
the unit casing
Remote control
Speed /Standby
The speed setting engages
cyclically: I-II-III-Standby
Turning unit ON/OFF
Speed selection
Regeneration mode
In this mode the fans rotation
direction changes to oppo-
site every 70 seconds. This
operation mode enables heat
recovery.
Ventilation mode
One of the fans of the venti-
lation unit operate in exhaust
mode and the other one in
supply mode at set speed.
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constant.
Party mode. Activation
of high speed timer for 4
hours.
Night mode. Activation of
low speed timer for 8 hours.
Speed
Standby
Filter
Alarm
Master

20
ROOMIE DUAL
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Press the side tabs to detach the front part of the indoor
unit from its back part and close the air duct. Then open
the latches and remove the front part of the front panel.
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clamps. Install the front part of the front panel and press
it gently to close the air duct.
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not changed.
Open the air duct in the reverse order.
The fan starts operating according to the actual speed
setting.
The front panel incorporates an operating LED indicator.
During the dark time the indicator light intensity drops
down.