Flexit K3 X-X TT User Guide

94233E-04
2006-01
FLEXIT S3 X/TT
K3 X/TT
A3 X/TT
S3 R
S3 RK
User Manual
Air Handling Unit/
Kitchen Model
S3 X/TT
Air handling unit with cross heat exchangeror TT exchanger
K3 X/TT
Air handling unit with cross heat exchangeror TT exchanger and
kitchen hood
A3 X/TT
Air handling unit with cross heat exchanger or TT exchanger and
connection for external kitchen hood
S3 R
Air handling unit with rotating exchanger
S3 RK
Air handling unit with rotating exchanger and kitchen hood
Contents
1
2
Important Safety Instructions, S3 X/K3 X/A3 X/TT
Functional Description
3
3
2.1 Heating Elements
2.3 Frost Protection
2.2 System Drawing, S3 X/K3 X/A3 X/TT
3
3
3
3
Operation - Control
3.1 Operation via a Kitchen Hood
4
4
4
5
Cleaning - Maintenance, S3 X/K3 X/A3 X/TT
General Drawing, S3 X/K3 X/A3 X/TT
5
7
6
Technical Data, S3 X/A3 X/K3 X/TT
7
6.1
7
8
Technical Data, Kitchen Hood
7
Important Safety Instructions, S3/S3 RK
Functional Description
8
8
8.1 Heating Elements
8.2 System Drawing, S3 R/S3 RK
9
8
8
Operation - Control
9.1
9
Operation via a Kitchen Hood
9
10 Cleaning - Maintenance, S3 R/S3 RK
10
11 General Drawing, S3 R/A3 R/S3 RK
12
12 Technical Data, S3 R/A3 R/S3 RK
12
12.1 Technical Data, Kitchen Hood
12
13 Adjusting the Unit
13
13.1 Adjustment
13.2 Control Card Adjustment Options
13
13
14 Troubleshooting
15 CE Declaration of Conformity
14
15
Symbols Used
This product has a number of symbols that are used to label the product itself and in the installation and user documentation. Here is an explanation of some of the commonest symbols.
HIGH VOLTAGE
DANGER! DO NOT
TOUCH
SUPPLY AIR
EXTRACT AIR
EXHAUST AIR
OUTDOOR AIR
EXCHANGER/SUMMER
CASSETTE
HEATING THERMOSTAT
Symbols for units/electric heating
!
TRANSFORMER
TRANSFORMER
ADJUSTMENT
ADJUSTMENT
SUPPLY AIR STAGE 2 EXTRACT AIR STAGE 2
CAUTION: When a text bears this symbol, it means that personal injury
or serious damage to the equipment may follow if the instructions are
not followed.
NB: When a text bears this symbol, damage to equipment or a poor
utilisation ratio may be the consequence of not following the
instructions.
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.
2
S3 X/A3 X/K3 X/TT
1
Important Safety Instructions,
S3 X/K3 X/A3 X/TT
2.2 System Drawing, S3 X/K3 X/A3 X/TT
Supply air
To reduce the risk of fire, electric shock or
injury, read all the safety instructions and
warning texts before using the unit.
This unit is only designed to handle ventilation air in
buildings.
It must not be used to extract combustible or
flammable gases.
Remove the power plug before commencing any
service and maintenance work.
Before you open the door, the unit must be dead and
the fans must be given time to stop (min. 2 minutes).
The unit contains heating elements that must not be
touched when they are hot.
The unit must not be operated without the filters being
in place.
Do not cook any combustible substances or flame
anything under the fan.
Do not leave a saucepan or frying pan containing oil or
grease unsupervised.
Follow the user manual precisely.
To maintain a good indoor climate, comply
with regulations and avoid condensation
damage, the unit must never be stopped apart
from during service/maintenance or in connection with an accident.
Extract air
Outdoor air Exhaust air
!
•
•
•
•
•
•
•
•
•
2
"
&
&
&)
&
&
&)
0
(28
-
-
"
$!
B1
B6
F10, F11
F20, F21
FI1
FI2
EB1
EB2
HR-X
M1
M2
P1
Functional Description
In the HR-X heat exchanger cassette, the cold outdoor
air and the warm extract air “cross” each other without
coming into direct contact with each other. With this
principle, 60-70 % of the heat in the extract air will be
transferred to the supply air. In addition, a thermostatcontrolled heating element EB1 will ensure that the
supply air has the desired temperature. This supply
air is passed via ducts and valves to living rooms and
bedrooms. The extract air is extracted either from the
same room or via door gaps/overflow gratings to toilets
and wet rooms. The used air is passed via a duct system
back to the unit, emits heat as stated above and is
blown out of the building via a roof hat or wall grating.
The extract air from the kitchen hood K does not pass
through the heat exchanger cassette.
2.1
%"
%"
+
SUPPLY AIR TEMPERATURE SENSOR
THERMOGUARD
OVERHEATING THERMOSTAT-MANUAL RESET
OVERHEATING THERMOSTAT-AUTOMATIC RESET
SUPPLY AIR FILTER
EXTRACT AIR FILTER
HEATING ELEMENT
PREHEATING ELEMENT, ELECTRICAL
CROSS HEAT EXCHANGER
SUPPLY AIR FAN
EXTRACT AIR FAN
PRESSURE GUARD (ACCESSORY)
ONLY FOR MODELS WITH A KITCHEN HOOD:
K
DA4
KITCHEN HOOD
DAMPER - KITCHEN HOOD
2.3 Frost Protection
The unit is fitted with a special thermoguard for
maximum utilisation of the heat recovery function and
maintenance of balanced ventilation. The thermoguard
has a B6 sensor rod with a dual function. This is located
in the exchanger cassette’s extract air duct and has
an NTC element to check the temperature and an
indicator to register condensation water.
If the extract air is dry, the thermoguard will ensure
that the unit works normally down to an exhaust air
temperature of -3 °C. At lower temperatures, it will
produce an impulse to activate the frost protection
function. This function will be repeated periodically
until the exchanger cassette’s temperature is sufficient
to prevent freezing.
If the extract air is damp, this function will start at a
temperature of +1 °C in the exhaust air.
The frost protection function itself has the following
sequence:
- The preheating element EB2 is activated.
- If this is not sufficient, the extract air fan will switch
to NORMAL speed and the supply air fan will be
reduced to LOW speed.
When there is no longer a need for frost protection, the
unit will return to normal mode.
Heating Elements
The heating elements are protected against overheating
by overheating thermostats F20/F21, which switch off
at 65 °C. As an additional safety measure, overheating
thermostats F10/F11 switch off at 80 °C. The overheating
thermostats can be reset manually by pressing the
white button. They are located at the front on the top
of the unit. They are accessible by opening the doors
and removing the plastic cover that covers the access
opening. See the label. The reset button is located on the
innermost panel a little way inside the opening.
This is purely a ventilation system and
not a heating system. The home must be
heated in the normal manner. The heat
gained from heat recovery must be seen
in relation to a situation in which the
extract air is blown right out of the home
without recovery.
3
S3 X/A3 X/K3 X/TT
3 Operation - Control
The speed of the fans in the unit is controlled from
a separately mounted SP 30 control switch. Depending on the operating situation, the fan speed
is set to the desired level.
Red
Green
Yellow
MIN stage:
Used when not as much ventilation as normal is required.
NORMAL stage: Normal operating ventilation.
This is the position for daily operation.
MAX stage:
Used when increased ventilation is required in wet rooms
or throughout the flat. Must be
used during and for a while after
showering and clothes drying, for
example, to avoid condensation
in the ducts.
If the unit is in temporary automatic frost protection
mode in the winter, the unit will not react to a change in
speed before the frost protection function has ceased.
If there is a power cut, the unit will automatically be set to the speed stage Normal
and active heating when it restarts. This
means that the heating element will heat if
there is a need for heating.
SP30 Control Switch for Electronic Automatic
Control with a Thermoguard
This contains the following functions:
- Right pressure switch (fan symbol) to choose
between min., normal and max. speeds with an
indicator lamp to show which speed stage is active.
- Left pressure switch (+ symbol) to choose heating
OFF/ON. This switch is used to switch heating off/on
(disconnected during the warm part of the year).
The heating thermostat (item 4/Chap. 5 General
Drawings) is factory-set to 20 °C in the unit. This
is located inside the unit and should not be set to
over 25 °C. It is adjusted with a flat screwdriver.
The sensor for the thermostat is located in the
supply air duct. Some heat loss up to the valves
must be expected where ducts pass through a cold
environment.
3.1
Operation via a Kitchen Hood (A3 and K3)
Figure 1:
A - Knob for damper/timer
B - Pushbutton for light
Open the damper when preparing food. The damper
closes automatically after a maximum of 60 minutes or
if you turn the damper knob to
as shown in Figure
1. When the timer is activated, the air handling unit is
forced in addition to the damper function.
- Red lamp (!):
Slow flash: Filter must be
replaced (provided that a
pressure guard is installed).
Fast flash: Overheating
thermostat triggered or
thermoguard not connected.
Permanently on: Both errors.
- Green lamp (+): This lights when the heating
switch is in the ON position:
- Yellow lamp (°C): This lights when the heating is
active (the element is heating).
Fig. 1
4
S3 X/A3 X/K3 X/TT
4
Cleaning - Maintenance, S3 X/K3 X/A3 X/TT
Before opening the door of the heat recovery system or carrying out maintenance on the
kitchen hood: switch off the heat, let the fans continue for three minutes to remove hot air,
remove the power from the unit and wait 2 minutes before opening the doors.
!
Fans:
Item nos. 9 and 10/Chap. 5 General Drawing, A3 X/K3 X/A3 X/TT. The fans normally do not
need to be inspected. If necessary, they can be removed as follows:
Unscrew and remove the cover over the fan (4 screws) and disconnect the electrical contact.
The fan can then be carefully pulled out of the track. The motor and fan blades are removed
by unscrewing the 4 screws in the round motor plate and carefully pulling the motor out of
the motor housing. If cleaning is required, use a small brush and compressed air, if possible.
Mounting takes place in the reverse order.
Filters:
To preserve a healthy indoor environment, it is important to change filters when they are dirty.
Dirty filters lead to:
Increased air resistance in the filter – less air in the home – the risk of bacterial growth
in the filter – in the worst case scenario, the system can be damaged.
!
How often the filters need to be changed depends on the degree of contamination of the air
where they are installed. In general, the filters need to be changed once a year, preferably in
the autumn (after the pollen season). In areas with a lot of dust and contamination, the filters
should be changed in the spring and autumn.
The supply air filter that cleans the outdoor air (2) consists of a prefilter (G3 coarse filter)
and a compact filter (F77 fine filter), Fig. 2. Remember the sequence from above: steel grille
– prefilter – compact filter. The filters are pushed in place in the fixing rails. The extract air
filter (1) is a G3 panel filter (coarse filter) and is located on a separate rail. It is recommended
that you order a filter subscription to ensure full benefit from the system and the cheapest
prices.
Order no. for a complete set of filters: 12322
Filter location
(the drawing shows the left model/the right model is inverted)
Extract air filter:
Flat filter with cardboard frame
Supply air filter:
Prefilter and
compact filter
Thermoguard
Exchanger
cassette
Exchanger
cassette:
Should be checked roughly once a year for dust and dirt in the air ducts. First remove the
thermoguard (3) and carefully pull the cassette (11) out. If cleaning is required, place it in
a bowl with warm soapy water (NB! not soda) and finally flush it through with warm water.
Clean the thermoguard separately with a dry cloth. When removing/installing the exchanger
cassette, it is important to ensure that both the cassette and the sensor rod are located
correctly and that the cable plug is inserted in the contact. The thermoguard must be located
6 cm from the top of the exchanger cassette and in the centre of the exchanger cassette.
Place it in the area beneath the extract air filter (1).
5
S3 X/A3 X/K3 X/TT
Valves and
duct system:
Clean the valves at least once a year. The duct system must be cleaned at least every 10 years.
Outdoor air
intake:
Check once a year that the grille is not clogged.
Roof hat:
Summer
operation:
Check once a year that the drainage gap at the bottom is not clogged with leaves. This applies
only if the system has a roof hat.
During the warm part of the year (outside the heating season), there is no need to recover heat.
The exchanger cassette can be replaced with a summer cassette that is available as an accessory.
This is pushed into place where the exchanger cassette (11) is located. This allows the outdoor air
to enter the building directly without heat recovery taking place. The thermoguard (3) must then
be transferred to the summer cassette. Its location is shown on the label. NB! At the same time,
the heating (4) must be switched off by turning the potentiometer anticlockwise to avoid the
heating element switching on unnecessarily.
Remember to reverse this again in the autumn.
Drainage:
At the base of the unit there is a condensation water drain
that passes through the rear of the kitchen hood and conducts
condensation water to the waste water drain. It is important that this
drain is always open, in good condition and well insulated where it
is exposed to frost. It is recommended that you keep an eye on the
drainage system to avoid any leaks occurring.
Kitchen hood
(only A/K models): Wipe the volume hood with a damp cloth and detergent. The filter
must be cleaned roughly twice a month with normal use. Loosen
the filter cassette by pressing in the snap locks at the front (Fig. 3).
Lower the filter and release the filter cloth and filter basket in warm
water with detergent. The filter cassette (with the filter) can also
be washed in a dishwasher. The volume hood should be cleaned
internally a few times a year. Wipe it internally with a damp cloth
and detergent. Replace the filter cassette and press it up so that it
is fixed in the snap locks.
The risk of fire increases if the volume hood is not cleaned as often
as specified.
To change the fluorescent tube, remove the lamp glass by pressing
the snap locks in the direction of the arrow, Fig. 4. The fluorescent
tube can now be accessed for replacement. Fluorescent tube base
G23.
6
Fig. 3
S3 X/A3 x/K3 X/TT
5
General Drawing, S3 X/K3 X/A3 X/TT
Supply air
Extract air Outdoor air Exhaust air
Item Part
no.
Right Hand Model
1
G3 extract air filter
2
G3 + F7 supply air filter
3
Thermoguard
7
4
Heating adjustment
12
5
Heating element
6
6
Preheating element
2
7
Preheating overheating thermostat
(Reset)
8
Heating overheating thermostat
4
(Reset)
9
Supply air fan
10 Extract air fan
11
X/TT cross heat exchanger cassette
('
12
Control unit
13
Kitchen hood (A and K models)
8
5
1
3
11
9
13
6 Technical Data, S3 X/A3 X/K3 X/TT
Fig. 5 Unit seen from above - air flow direction
Rated voltage
Fuse
Rated current, total
S3 X/K3 X
230 V/50 Hz
10 A
6.7 A
S3 X/K3 X/TT
230 V/50 Hz
10 A
6.7 A
Rated power, total
1530 W
1530 W
Rated power, electric batteries
1200 W
700 W
Rated power, fans
2 x 165 W
2 x 165 W
Rated preheating power
700 W
1200 W
Fan type
F-wheel
F-wheel
Fan motor control
Max. fan speed
Automatic control standard
Filter type (SUP/EXTR)
SUP filter dimensions (WxHxD)
EXTR filter dimensions (WxHxD)
Weight
Duct connection
Height
Width
Depth
Transformer
2230 RPM
SP30
F7/G3
225x130x70 mm
225x130x20 mm
40 kg
Dia. 125 mm
700 mm
598 mm
280 mm
Transformer
2230 RPM
SP30
F7/G3
225x130x70 mm
225x130x20 mm
44 kg
Dia. 125 mm
700 mm
598 mm
280 mm
6.1 Kitchen Hood Technical Data
Width
60 cm
Other dimensions
See separate drawing
Electrical connection
230 V earthed
Light
Fluorescent tube, base G23, 11 W
7
S3 R/S3 RK
7
8.2 System Drawing, S3 R/S3 RK
Important Safety Instructions,
S3 R/S3 RK
Extract air
To reduce the risk of fire, electric shock or
injury, read all the safety instructions and
warning texts before using the unit.
This unit is only designed to handle ventilation air in
buildings.
It must not be used to extract combustible or
flammable gases.
Remove the power plug before commencing any
service and maintenance work.
Before you open the door, the unit must be dead and
the fans must be given time to stop (min. 2 minutes).
The unit contains heating elements that must not be
touched when they are hot.
The unit must not be operated without the filters
being in place.
Follow the user manual precisely.
Supply air
Outdoor air
Exhaust air
!
•
•
•
•
•
•
•
"
M1
FI2
M2
EB1
F10
FI1
P1
F20
HR-R
M4
To maintain a good indoor climate, comply
with regulations and avoid condensation
damage, the unit must never be stopped
apart from during service/maintenance or in
connection with an accident.
!
DA4
K
B1
EB1
F10
F20
FI1
FI2
M1
M2
HR-R
M4
FOR CEILING-MOUNTED UNITS: Be careful with the doors when opening the unit.
They open suddenly when the last screw is
removed. Take care as well when removing
components. Hold them when you remove
the last screw to avoid objects falling down.
The rotor requires extra care on account of
its weight.
SUPPLY AIR TEMPERATURE SENSOR
HEATING ELEMENT
OVERHEATING THERMOSTAT, MANUAL RESET
OVERHEATING THERMOSTAT, AUTOMATIC RESET
SUPPLY AIR FILTER
EXTRACT AIR FILTER
SUPPLY AIR FAN
EXTRACT AIR FAN
ROTAR HEAT EXCHANGER
ROTOR MOTOR
ONLY FOR MODELS WITH A KITCHEN HOOD:
K
DA4
8 Functional Description
In the HR-R rotor, the cold outdoor air and the warm
extract air pass each other without being mixed. With
this principle, around 75-80 % of the heat in the extract
air will be transferred to the supply air. In addition, a
thermostat-controlled heating element EB1 will ensure
that the supply air has the desired temperature when
the temperature outside is very low. This supply air
is passed via ducts and valves to living rooms and
bedrooms. The extract air is extracted either from the
same room or via door gaps/overflow gratings to toilets
and wet rooms. The used air is passed via a duct system
back to the unit, emits heat as stated above and is blown
out of the building via a roof hat or wall grating.
The temperature of the supply air is controlled by the
rotor. Only when this is not able to maintain the set
temperature, will the heating element start up. When
there is no need for heating (summer), the rotor will
stop.
KITCHEN HOOD
DAMPER - KITCHEN HOOD
8.1 Heating Elements
The heating elements are protected against
overheating by the overheating thermostat F20, which
switches off at 65 °C. As an additional safety measure,
the overheating thermostat F10 switches off at 80 °C.
The overheating thermostat can be reset manually by
removing the white plastic cover and pressing the reset
button. The thermostat is accessible by opening the
doors and is located at the bottom in the compartment
right above the heating element. See the label - RESET.
This is a ventilation system only and not a heating system. The home must be heated in the
normal manner. The heat gained from heat recovery must be seen in comparison to a situation where the extract air is blown right out of the home without recovery.
8
S3 R/S3 RK
9 Operation - Control
The speed of the fans in the unit is
controlled from a separately mounted
SP 30 control switch. Depending on the
operating situation, the fan speed is set
to the desired level.
Red
Green
Yellow
MIN stage:
Used when not as much ventilation as normal is required.
NORMAL stage: Normal operating ventilation.
This is the position for daily operation.
MAX stage:
Used when increased ventilation is required in wet rooms
or throughout the flat. Must be
used during and for a while after
showering and clothes drying, for
example, to avoid condensation
in the ducts.
If there is a power cut, the unit will automatically be set to the speed stage Normal
and rotor active when it restarts, i.e. the
rotor will operate if heat is required.
9.1 Operation via a Kitchen Hood
Figure 1:
A - Knob for damper/timer
B - Pushbutton for light
SP30 Control Switch for Electronic Automatic
Control with a Thermoguard
This contains the following functions:
- Right pressure switch (fan symbol) to choose
between min., normal and max. speeds with an
indicator lamp to show which speed stage is active.
- Left pressure switch (+ symbol) to choose heating
OFF/ON. This switch is used to switch the rotor and
heating element off/on (disconnected during the
warm part of the year).Temperature adjustment
(item no. 3 /Chap. 11) is factory-set to 20 °C in
the unit and should not be set to over 25 °C. It is
adjusted with a flat screwdriver. The temperature
sensor is located in the supply air duct. Some heat
loss up to the valves must be expected where ducts
pass through a cold environment.
Open the damper when preparing food. The damper
closes automatically after a maximum of 60 minutes or
if you turn the damper knob to
as shown in Figure
6. When the timer is activated, the air handling unit is
forced in addition to the damper function.
- Red lamp (!):
Slow flash: Filter must be
replaced (provided that a
pressure guard is installed).
Fast flash: Overheating
thermostat triggered.
Permanently on: Both errors.
- Green lamp (+): This lights up when the rotor and
heating are activated.
- Yellow lamp (°C): This lights up when the rotor is in
operation (the rotor stops when
heat is not required)
Fig. 6
9
S3 R/S3 RK
10 Cleaning - Maintenance, S3 R/S3 RK
!
Before opening the door of the heat recovery system or carrying out maintenance on the
kitchen hood: switch off the heat, let the fans continue for three minutes to remove hot air,
remove the power from the unit and wait 2 minutes before opening the doors.
Fans:
Item nos. 6 and 7/Chap. 11 General Drawing. The fans normally do not need to be inspected. If
necessary, the fan blades can be cleaned with a small brush and compressed air, if possible.
NB! Do not use water. Dismantle the fan as follows: Open the doors as instructed. Pull out the
electric quick-release contact for the motor. Unscrew 2 screws at the front of the motor’s
mounting plate. The fan can then be pulled carefully down and out of the unit.
Filters:
To preserve a healthy indoor environment, it is important to change filters when they are dirty.
Dirty filters lead to:
Increased air resistance in the filter – less air in the home – the risk of bacterial growth
in the filter – in the worst case scenario, the system can be damaged.
!
How often the filters need to be changed depends on the degree of contamination of the air
where they are installed. In general, the filters need to be changed once a year, preferably in
the autumn (after the pollen season). In areas with a lot of dust and contamination, the filters
should be changed in the spring and autumn. The supply air filter and extract air filter (2 and 1)
consist of a compact filter (F7). These are pushed into place.
It is recommended that you order a filter subscription to ensure full benefit from the system and
the cheapest prices.
Order no. for a complete set of filters: 12328
Fig. 7
Filter location
(the drawing shows the left model/the right model is inverted)
Supply air filter:
Compact filter
Extract air filter:
Compact filter
Rotor
Rotor:
Valves and
duct system:
Outdoor air
intake:
Roof hat:
The rotor (8) should be checked roughly once a year for dust and dirt in the air ducts. If there
are signs of clogging, contact your supplier for service.
Clean the valves at least once a year. The duct system must be cleaned at least every 10
years.
Check once a year that the grille is not clogged.
Check once a year that the drainage gap at the bottom is not clogged with leaves. This
applies only if the system has a roof hat.
10
S3 R/S3 RK
Summer
operation:
During the warm part of the year (outside the heating season), there is no need to recover heat. Then
you can press the + switch on the control switch so that the green + lamp goes out. This avoids heat
recovery on cool nights and the house is not heated up so quickly in the daytime. When there is again
a need for heat recovery, press the + switch so that the green lamp lights up again.
Kitchen hood
(only A/K models): Wipe the volume hood with a damp cloth and detergent. The
filter must be cleaned roughly twice a month with normal use.
Loosen the filter cassette by pressing in the snap locks at the
front (Fig. 8). Lower the filter and release the filter cloth and
filter basket in warm water with detergent. The filter cassette
(with the filter) can also be washed in a dishwasher. The volume
hood should be cleaned internally a few times a year. Wipe it
internally with a damp cloth and detergent. Replace the filter
cassette and press it up so that it is fixed in the snap locks.
!
The risk of fire increases if the volume hood is not cleaned
as often as specified.
Fig. 8
To change the fluorescent tube, remove the lamp glass by
pressing the snap locks in the direction of the arrow, Fig. 9.
The fluorescent tube can now be accessed for replacement.
Fluorescent tube base G23.
Fig. 9
11
S3 R/S3 RK
11 General Drawing, S3 R/A3 R/S3 RK
Exhaust air Outdoor air Supply air Extract air
Left Hand Model
-
.
1
2
+
,
*
('
/
Item Part
no.
1
F7 extract air filter
F7 supply air filter
2
3
Heating adjustment
4
Heating element
5
Heating overheating thermostat (Reset)
6
Supply air fan
7
Extract air fan
8
Rotary wheel-type heat exchanger
9
Rotor motor
10 Control unit
11
Kitchen hood (A and K models)
9
((
Kitchen hood
12 Technical Data, S3 R/A3 R/S3 RK
Rated voltage
Fuse
Rated current, total
Rated power, total
Rated power, electric batteries
Rated power, fans
Rated preheating power
Fan type
Fan motor control
Max. fan speed
Automatic control standard
Filter type (SUP/EXTR)
SUP filter dimensions (WxHxD)
EXTR filter dimensions (WxHxD)
Weight
Duct connection
Height
Width
Depth
230 V/50 Hz
10 A
5.4 A
1236 W
975 W
2 x 165 W
Unit seen from above - air flow direction
-
F-wheel
Transformer
2230 RPM
SP30
F7/F7
285x130x50 mm
285x130x50 mm
38.5 kg
Dia. 127 mm (sleeve)
700 mm
598 mm
320 mm
12.1 Kitchen Hood Technical Data
Width
60 cm
Other
See separate drawing
Electrical
230 V earthed
Light
Fluorescent tube,
12
COMMON TO ALL
13 Adjusting the Unit
!
Before opening the door of the heat recovery system or carrying out maintenance on the kitchen
hood: switch off the heat, let the fans continue for three minutes to remove hot air, remove the
power from the unit and wait 2 minutes before opening the doors.
13.1 Adjustment
The speed of the unit at the normal stage must be set to the voltage specified in the “Documentation of Ventilation
Data” form that is enclosed with the ventilation drawings from the company responsible for project planning. Open
the door and unscrew and remove the cover of the automatic control compartment. The transformer is then visible
and the cables marked 1 2 3 (as shown on page 2) can be switched over to the specified voltage level.
Extract air Supply air
S3 X/A3 X/K3 X/TT: Automatic control compartment: On the side where the thermostat is located.
Factory setting
S3 R/S3 RK:
Automatic control compartment: On the side of the rotary wheel-type
heat exchanger (by the rotor motor).
Factory setting
120 V
120 V
120 V
120 V
Dipswitch
Fig. 10 Cross unit control card
13.2 Control Card Adjustment Options
Flexit S3 X/K3 X/A3 X/TT
Dipswitch
no.
Flexit S3 R/S3 RK
OFF
ON
1
Heating is not
affected with frost
protection
Heating is switched off
with frost protection
Not used
Not used
2
Heating and preheating function normally
Heating and
preheating are
switched off at the min.
Must be in this position
Not used
3
Not affected with
nighttime temperature
reduction
Temperature is
reduced by 3°C with
nighttime temperature
Not affected with
nighttime temperature reduction
Temperature is reduced by
3°C with night-time tem-
4
Not affected
with nighttime
temperature
Fan speed is reduced to
low with nighttime temperature reduction
Not affected with
nighttime temperature
reduction
Fan speed is reduced
to low with nighttime
temperature reduction
5
Preheating element
is used only for frost
protection
Preheating element is
also used for heating
Heating not available
Heating available
6
Must be in this position
Not used
OFF
Bold type shows the standard factory setting. All settings can be combined.
13
ON
COMMON TO ALL
14 Troubleshooting
FAULT
DO THE FOLLOWING
If the fans are not
working or cannot be
adjusted
S3 X/K3 X/A3 X/TT:
• Check that the power plug is correctly inserted in the power point.
• Check that the fuses in the electrical cabinet are switched on.
• The overheating thermostats (item nos. 7, 8/Chap. 5) may have been triggered.
Remove the white plastic cover and press in the white reset button.
• Check that the thermoguard (item no. 3) is connected.
S3 R/S3 RK:
• Check that the power plug is correctly inserted in the power point.
• Check that the fuses in the electrical cabinet are switched on.
• The overheating thermostat (item no. 5/Chap. 11) may have been triggered.
Remove the white plastic cover and press in the white reset button.
• Check that the thermoguard (item no. 3) is connected.
If the supply air feels too
cold
S3 X/K3 X/A3 X/TT:
• Check that the heating switch (4) is in position 1 and a summer cassette is not
loaded.
• The heating thermostat (item no. 4) can be set to a higher temperature.
• The overheating thermostats (item nos. 7, 8/Chap. 5) may have been triggered.
Remove the white plastic cover and press in the white reset button.
• Check that the unit’s thermoguard (item no. 3) is connected.
• Check that the unit’s temperature sensor B1 is connected.
• Ducts in cold lofts may need additional insulation.
S3 R/S3 RK:
• Check that the heating switch (4) is in position 1.
• The heating thermostat (item no. 4) can be set to a higher temperature.
• The overheating thermostat (item no. 5/Chap. 11) may have been triggered.
Remove the white plastic cover and press in the white reset button.
• Check that the unit’s temperature sensor B1 is connected.
• Ducts in cold lofts may need additional insulation.
If the air flow rate has
been seriously reduced
S3 X/K3 X/A3 X/TT AND S3 R/S3 RK:
• The filters (item nos. 1, 2) may be clogged by dirt. Clean or replace them. See
under “Cleaning - Maintenance”.
• Fan wheels need cleaning. See under “Cleaning - Maintenance”.
If none of this helps, please contact your supplier for service. Please state the serial number on the rating plate inside
the unit (open the door).
14
15 CE Declaration of Conformity
This declaration confirms that the products meet the requirements in the following Council Directives and
standards:
89/336/EEC Electromagnetic compatibility (EMC)
73/23/EEC Low-voltage Directive (LVD)
EN 60335-1:94, + A11:95, + A1:96, + A13:98, + A14:98, + A2:00
EN 60335-2-31:97, + A1:99
EN 55014-1:93, + A1:97, + A2:99
EN 61000-3-2:95, +A1:98, + A2:98
EN 61000-3-3:95
EN 55014-2:97
Producer:
Equipment group:
FLEXIT AS, Televeien 15, 1870 Ørje, Norway
Ventilation units for installation in ducts
Type:
Falcon K3 Cross
Falcon S3 Cross
S3 R
The product is CE-marked:
Shown in the article above
Falcon Energy K3TT
Falcon Energy S3TT
2001
2001
2005
FLEXIT AS 29.03.2005
Pål J. Martinsen
General Manager
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 correctly used and maintained. Filters are consumables.
The symbol on the product or on its packaging indicates that this product may not be treated as household waste. Instead it shall be handed
over to the applicable collection point for the recycling of electrical and electronic equipment.
By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human
healthe, which could otherwisw be caused by inappropriate waste handeling of this product. For more detailed information, please contact
your local city office, your household waste disposal service or the shop where you purchased the product.
Notice of lack of conformity as a result of incorrect or defective installation must be submitted to the installation company responsible.
The right to give notice of lack of conformity may lapse if the system is used incorrectly or maintenance is grossly neglected.
15
Flexit AS, Televeien 15, N-1870 Ørje www.flexit.no