Flexit Spirit K2R User manual

Installation instructions
Air handling unit with kitchen hood
and control panel
Spirit K2
111140E-11
2016-11
A

2
Contents
1 Installation/Preliminaries 4
1.1 Inspection/Maintenance 4
1.2 Space Required 4
1.3 Location requirements 4
2 Installation of Flexit SPIRIT K2 R 6
2.1 Installing the volume hood 6
2.2 Encasing 7
3 Connection of unit and electrical work 8
3.1 Connection of unit 8
3.2 Electrical work 8
3.3 Automatic Control 8
3.4 External components 8
4 Sizes/Physical Dimensions 9
4.1 Dimensioned sketch Flexit SPIRIT K2 R 9
5 General Drawings and System Drawings 10
6 Capacity and sound data 11
6.1 Capacity diagram, sound data, specifications - K2 R EC 11
7 Technical data 12
7.1 Technical data Flexit SPIRIT K2 R 12
8 Installation of control panel CI 60/600 13
8.1 Content 13
8.2 Installation of CI60/600 13
8.3 Concealed installation 14
8.4 Surface installation 14
8.5 Finishing off – CI60 14
8.6 Finishing off – CI600 14
9 Adjusting EC units 15
9.1 Adjustment with CI60 15
9.2 Adjustment with CI600 16
9.2.2Temperature regulation 16
10 Adjusting the Kitchen Hood 17
10.1 Forced Ventilation 17
11 Adjustment Curves 17
11.1 Forced ventilation Flexit SPIRIT K2 R 17
12 Final checks/first use 18
13 EC Declaration of Conformity 19
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.

3
It is the installer's responsibility to carry out a full safety and
function assessment of the appliance
To reduce the risk of fire, electric shock or injury, read all the
safety instructions and warning texts before
using the appliance.
• This unit is only designed for ventilation air in buildings.
• Remove the power plug before commencing any service
and maintenance work.
• Before opening the door, current to the unit must be
turned off and the fans must have had time to stop (min. 3
mins.).
• The unit contains heating element which must not be
touched when it is hot.
• The unit must not be operated without the filters being in
place.
Important Safety Instructions:
!
Symbols Used
These products bear a number of symbols used for
labelling the actual product and in installation and user
documentation.
EXAMPLE OF NIPPLE LOCATION
(shown as right-hand model)
HIGH VOLTAGE
DANGER! DO NOT TOUCH
NB! When a text bears this symbol, damage to
equipment or a poor utilisation ratio may result if
instructions are not followed.
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.
!
This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved. Note that the product is not intended for use by children.
Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children 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.
Extract air
Outdoor air
Supply air
Exhaust air
• There shall be adequate ventilation of the room when the
range hood is used at the same time as appliances burning
gas or other fuels.
• The air must not be discharged into flue that is used for ex-
hausting fumes from appliances burning gas or other fuels.
• Accessible parts may become hot when used with cooking
appliances.
• There is risk of fire if cleaning is not carried out in accord-
ance with the instructions.
• Do not flambé under the range hood.
• Do not cook substances which could catch fire under the
ventilator.
• Do not leave a saucepan or frying pan containing oil or
grease unsupervised.
• Follow the instructions in the user manual.
To maintain good indoor air quality, comply with regulations
and to avoid condensation damage the unit must never be
stopped apart from during service/maintenance or in con-
nection with an accident.

4
1 Installation/Preliminaries
See separate documentation for installation of ducts, valves,
etc.
1.1 Inspection/Maintenance
The unit must be installed with space for service and
maintenance such as filter replacement and cleaning the
fans and recovery system.
The control cable with plug for automatic control on top of
the unit must be easily accessible.
1.2 Space Required
Type A B C
K2 R 335 mm 2 x 2 mm 215-380 mm
A: Space in front of unit
B: Space at side of unit
C: Space above unit
These are minimum requirements and only take service
needs into account. National statutory requirements for
electrical safety may deviate from this. Check which rules
apply in your country.
1.3 Location requirements
The unit has been designed for location in the kitchen over
the cooker as it contains an integrated kitchen hood. The
unit is available in left or right versions
(exhaust air nipple to the left or right), depending on what is
the most favourable in relation to the duct location.
The unit is designed for indoor installation.
596mm
B=2mm B=2mm
(filter)
C=215-380mm
A=335mm
Filter
Fig. 1
Cover on top of unit
(optional extra)
70mm
(volume hood) 700mm
(unit)
845mm

5
Fig. 2
1.4 Recommended sound attenuation for
wall-mounting
For wall mounting, the (included) wall bracket fixed to the unit
is used.
The unit must not be placed on a wall with rooms on the
other side which are sensitive to noise. The wall must be
sound-insulated. If necessary, use double plasterboards on
the wall.
Interrupted studs must be used.
min 600 mm
min 500(650) mm
Recommended 500mm*
*min. req. 650mm for gas cookers
Min. req. 450mm

6
2 Installation of Flexit SPIRIT K2 R
Flexit SPIRIT K2 R is designed for installation in the kitchen
above the cooker, see Fig. 2. The unit is supplied in left and
right-hand versions depending on what suits duct locations
best (Chap. 4.1).
The unit must be wall-hung from a mounting bracket (Fig. 6)
at the top using the enclosed screws. It must also be screwed
to the wall at the bottom edge of the unit. Remove 2 plastic
plugs to access the mounting holes. For secure mounting, it is
necessary to use extra nailing strips (noggins). The location
of these is shown in Fig. 3.
NB! The wall must have good sound insulation, see Chap. 1.4.
The wall must be completely flat behind the ventilation unit.
If the kitchen hood area is tiled, a suitable liner plate must be
mounted behind the unit. The distance between the bottom
of the grease filter and the cooker should be at least 50 cm
for electric cookers and 65 cm for gas cookers. For the
external dimensions of the unit, see the dimensioned drawing
in Chap. 4.1.
2.1 Installing the volume hood
A
1
2
3
3
1
2
Fig. 4
1. Mount the two sides.
2. Attach the two angles.
3. Fix the glass profile.
fixing, top edge
40 mm
720 mm
spikerslag
gips
steinull
Fig. 3
fixing lower edge
gypsum
studs
rockwool

7
Fig. 5
Fig. 6
596 mm
B=2mm B=2mm
min 600 mm
min 500(650) mm
Recommended
500mm*
*min. req. 650mm for gas cookers
Min. req. 450mm
2.2 Encasing
The casing must not be deeper than dimension A.
Fig. 7
A

8
3.3 Automatic Control
The control pack is included in the unit package. The
low-voltage cable must be laid between the unit and the
switch unit. See separate manual for automatic control
included in pack.
3.4 External components
See wiring diagram enclosed with unit.
3 Connection of unit and electrical
work
3.1 Connection of unit
• Ensure that the ducts arrive at the right muff coupling. See
the marking on the unit (top/bottom and behind door).
The symbols are explained on page 3 and the location is
shown in the dimensioned drawing in Chap. 5.
• Pull the duct insulation well up to the unit.
• To avoid condensation, it is very important for the outdoor
air duct and the exhaust air duct to have insulation and a
plastic muff pulled right down to the unit.
NB! Use tape to seal the plastic sleeve to the unit
but do not compress the insulation.
• Lay the outdoor air duct with a slight incline towards the
outdoor air cap so that any water that enters drains out
again.
• If there is a short distance between the unit and the
exhaust point, sound insulation must be installed to ensure
that the requirements for the outdoor sound level are met.
• Ducts must have good sound insulation, particularly above
the unit.
3.2 Electrical work
The unit is suppied with a 1.8 m cable with plug.
The cable leaves the top of the unit and is connected to a
230V 50 Hz single-phase earthed power point located within
a convenient distance. The plug must be used as a service
switch.
NB! Make sure the power point for the unit is not boxed in.
See Chap. 13 for fuse sizes.
A low-voltage cable (with connector) leaves the unit for
use on the control panel. It is important to retain easy
access to this plug - in case of any fault or when replac-
ing the unit.
The unit must be installed with a separate earth
leakage circuit breaker.
The low-voltage cable must be laid minimum
30 cm from the 230 V cable and in the case of
chased mounting be laid in 20 mm electrical
piping. The cable length must not exceed 24
meters.
All electrical work must be carried out by author-
ised personnel.

9
4 Sizes/Physical Dimensions
4.1 Dimensioned sketch Flexit SPIRIT K2 R
(Shown as right-hand model)(Shown as left-hand model)
514
227
371
84
129
229
514
227
371
84
129
229

10
5 General Drawings and System
Drawings
General Diagram (Rotary Wheel-type Heat
Exchanger)
1(FI2) Extract filter F 7
2 (FI1) Supply air filter F 7
3 (EB1) Heating element
4 (F10-20) Overheating thermostat (heating) (Reset)
5 (M1) Supply air fan
6 (M2) Extract air fan
7 (HR-R) Rotary wheel-type heat exchanger
8 (M4) Rotor motor
9 Control unit
10 Kitchen hood
11 Damper adjustment
System drawing (electric battery)
B1 Supply air temperature sensor
EB1 Heating element
F10 Overheating thermostat, manual reset
F20 Overheating thermostat, automatic reset
FI1 Supply air filter
FI2 Extract air filter
M1 Supply air fan
M2 Extract air fan
HR-R Rotary wheel-type heat exchanger
M4 Rotor motor
K Kitchen hood
DA4 Damper
Outdoor Supply Extract Exhaust
air air air air
Outdoor Supply Extract Exhaust
air air air air
(Shown as left-hand model. The right-hand version is a mirror image.)
6
2
7
3
8
9
5
1
10
11
4
DA4
K
FI1
M1 M2
EB1
F10
F20
M4
FI2
B1
HR-R

11
6 Capacity and sound data
6.1 Capacity diagram, sound data, specifications - K2 R EC
Supply air side (with F7 filter)
Data for supply air is measured in accordance with ISO 5136,
"In-duct method".
Radiated noise is measured in accordance with ISO 9614-2.
Bruel & Kjær measuring equipment, type 2260.
Air capacity at various capacity settings in %
Supply air fan power consumption at various capacity settings.
Sound power level LwA, cf. correction table.
Radiated 1: K2 free hanging
Radiated 2: K2 built-in kitchen
Sound data is given at sound power level LwA in the capacity diagrams
and is corrected with the table below for the various octave bands.
Radiated noise produces Lw in the various octave bands and total
LwA. This is read directly from the supply air table.
Correction factor for Lw
Hz 63 125 250 500 1000 2000 4000 8000 LwA
Supply air 14 12 1 -6 -7 -15 -22 -26
Extract air 14 13 0 -5 -10 -16 -25 -28
Radiated 1 -4 -7 -12 -19 -27 -32 -32 -34 -16
Radiated
2 3 -5 -17 -23 -29 -32 -37 -35 -18
Extract air side (with F7 filter)
SFP < 0,75
8060
4020
0
10
20
30
40
50
60
70
80
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300 350
Power Consumption [W]
Air flow rate [l/s]
Contact resistance [Pa]
Air flow rate [m³/h]
80%
100%
60%
40%
55dB(A) 59dB(A)40dB(A) 50dB(A)45dB(A)
100%
80%
60%
40%
00
10
20
30
40
50
60
70
80
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300 350
50dB(A) 55dB(A) 60dB(A) 63dB(A)45dB(A)40dB(A)
Power Consumption [W]
Air flow rate [l/s]
Contact resistance [Pa]
Air flow rate [m³/h]
100%
80%
60%
40%
100%
80%
60%
40%
SFP < 0,75
20 40 60 80

12
7 Technical data
7.1 Technical data Flexit SPIRIT K2 R
EC EC
700W 350W
Rated voltage 230 V/50 Hz 230 V/50 Hz
Fuse size 10 A 10 A
Rated current, total 3,91 A 2,1 A
Rated power, total 870 W 495 W
Rated power, electric batteries 700 W 350 W
Output fans 2 x 74 W 2 x 74 W
Fan type F-wheel F-wheel
Fan motor control 0-10 V 0-10 V
Max. fan speed 1,970 RPM 1,970 RPM
Automatic control standard CS 50 CS 50
Filter type (SUP/EXTR) F7/F7 F7/F7
SUP filter dimensions (WxHxD) 130x335x50 mm 130x335x50 mm
EXTR filter dimensions (WxHxD) 130x335x50 mm 130x335x50 mm
Weight 56 kg 56 kg
Duct connection Dia. 125 mm (sleeve) Dia. 125 mm (sleeve)
Duct connection kitchen fan
Height 700 mm* 700 mm*
Width 598 mm 598 mm
Depth 510 mm** 510 mm**
* without volume hood and duct connection, see Chap. 5
** see Chap. 5

13
8 Installation of control panel CI 60/600
8.1 Content
1
2
3
4
5
1. Control panel
2. Back piece for concealed installation
3. Back piece for surface installation
4. Installation instructions
5. Cable for control panel
Fig. 8
ON OFF
Configuration Setting
CI 600 (MASTER)
CI60 1 (SLAVE)
CI60 2 (SLAVE)
Automatic
OFF
ON
CI60 1 (MASTER)
CI60 2 (SLAVE)
OFF
ON
CI 600 (MASTER)
CI60 (SLAVE)
Automatic
Irrelevant
8.2 Installation of CI60/600
CAUTION! The control panel must be connected
to the ventilation unit before the ventilation unit
is connected to mains.
!
Lay the cable for the control panel between the ventilation
unit and the control panel. The control panel is adapted for
concealed installation over a single connection box (use low
back piece, item no. 2) or surface installation on the wall (use
high back piece, item no. 3).
Click the cable into the contact at the back of the control
panel and into the contact on the top of the ventilation unit.
It is possible to connect two CI60 panels and one CI600
panel to each unit. If several CI60 panels are used, each
panel must have its own identity. This is selected with the
switch on the panel’s printed circuit board (se Fig. 27). Use
the appropriate table settings. The panels can be connected
serially, in arbitrary order.
OFF = MASTER
ON = SLAVE
OBS! The low-voltage cable must be at least 30
cm from cables carrying mains voltage or higher.
With concealed installation, the cable is laid in
20 mm conduit pipes. The cable length must not
exceed 24 meters.

14
8.3 Concealed installation
Lay the cable between the wall box and the ventilation unit in
the preinstalled conduit pipe. Fit the back piece (item no. 2),
over the wall box and click the cable in directly from behind
as in the illustration (se Fig. 9).
8.4 Surface installation
Lay the cable between the back piece (item no. 3), and the
ventilation unit. Cut out the perforation in the corner of the
back piece that is suitable for installation. Screw the back
piece to the wall with suitable screws. Click the cable into
the control panel from below, where there is a socket in the
printed circuit board (se Fig. 10).
Fig. 10
Fig. 9
8.5 Finishing off – CI60
Slide the panel off as shown by arrow no. 1 (see Fig. 11) and
fit the control panel straight into the back piece as shown
by arrow no. 2 (see Fig 12) until it clicks into place. Slide the
panel back on.
8.6 Finishing off – CI600
Fit the control panel over the hooks in the back piece as
shown by arrow no. 1 and then click the panel into place at
the bottom edge as shown by arrow no. 2 (see Fig. 13).
Fig. 11 Fig. 12
Fig. 13
1
1
2
2

15
Fig. 14
9 Adjusting EC units
9.1 Adjustment with CI60
9.1.1 Adjustment
Only stage 2 (NORMAL) needs to be adjusted. Stages 1
and 3 have fixed settings, while stage 2 has to be adjusted as
required in the individual home.
The function of the different stages:
MIN Must not be used when the home is in use.
Must not be used in the first two heating
seasons.
NORMAL Used under normal conditions. On this
setting the air supply must be adjusted
according to current regulations.
MAX Used if there is a need for increased air
supply on account of higher occupancy or
a raised humidity level, for example during
showering or when clothes are being dried.
This setting is normally used for limited
periods.
The ventilation unit's air supply is adjusted in speed level
NORMAL using the knobs on the back of the cover. Knob 9 is
used for supply air level and knob 8 for extract air level (see
Fig. 14). The adjustment range is 20-100% of the maximum
level according to the scale on the knob.
Factory settings for supply air/extract air:
MIN 50% (fixed)
NORMAL 75% (variable)
MAX 100% (fixed)
9.1.2. Adjusting the temperature
The temperature required for the supply air can be set
with knob 11. The adjustment range is 10 - 30°C. It should
normally be set to around 18°C. Use of the factory setting is
recommended.
If necessary, the ventilation unit's additional heating can
also be switched ON/OFF with switch 10. In this case only
the rotating heat exchanger is used as a source of heat. It is
best to leave it in ON position, as the unit will then respond
automatically when there is a need for additional heating.
8
9
10 11
The unit's air supply MUST be adjusted before the
unit is used for the first time. This should be done in
accordance with the projection documents. Adjust the
values based on the projected values.

16
9.2 Adjustment with CI600
9.2.1 Adjustment
Only stage 2 (NORMAL) needs to be adjusted.
Note that it is also possible to adjusted stages 1 and 3
with a CI600 control panel. This should only be done if a
special need arises, however. This is because it is extremely
important to have adequate air flow rates.
The function of the different stages:
MIN Must not be used when the home is in use. Must
not be used in the first two heating seasons.
NORMAL Used under normal conditions. On this setting
the air supply must be adjusted according to
current regulations.
MAX Used if there is a need for increased air supply
on account of higher occupancy or a raised
humidity level, for example during showering
or when clothes are being dried. This setting is
normally used for limited periods.
First go to the "Advanced user" menu, enter the PIN and
press OK:
PIN CODE
OK?
1 0 0 0
Then go to the "Fan control" menu. The fans are selected and
configured in this menu screen. Then go to adjustment of
the extract air fan and supply air fan.
FAN REGULATION
SUPPLY AIR
EXTRACT AIR
TIMER
AIR VOLUME COMP
>
>
>
OK?
This dialog is identical for the supply air and extract air fans.
The fans are adjusted individually to the desired capacity for
the respective speed.
SUPPLY AIR
MIN SPEED
NORMAL SPEED
MAX SPEED
OK?50%
75%
100%
Factory settings for supply air/extract air:
MIN 50% (variable)
NORMAL 75% (variable)
MAX 100% (variable)
9.2.2 Temperature regulation
In this menu screen (located under "Advanced user") you
configure the temperature regulation and cooling functions.
TEMPERATURE REGULATION
REGULATION TYPE
COOLING
NEUTRAL ZONE
EXT. TEMP. CONTROL
>
>
OK?
>
Regulation type
If supply air regulation is selected, no further settings can
be set here. If extract air regulation is selected, the max. and
min. supply air temperatures can also be specified.
REGULATION TYPE
REGULATION
MAX SUPPLY AIR TEMP
MIN SUPPLY AIR TEMP
EXTR OK?
35°
15°
The unit's air supply MUST be adjusted before
the unit is used for the first time. This should
be done in accordance with the projection
documents. Adjust the values based on the projected
values.

17
11 Adjustment Curves
11.1 Forced ventilation Flexit SPIRIT K2 R
Max. air volume through kitchen hood in case of forced
air volume
Measurements have been taken at 2/3 pressure in the
extract air duct and 1/3 pressure in the exhaust air duct
before opening the damper.
10 Adjusting the Kitchen Hood
If basic ventilation is desired via the kitchen hood, the
damper from the factory must be replaced. Replace it with a
damper with adjustment options. This is not supplied with the
unit.
10.1 Forced Ventilation
The unit has 4 forced ventilation options:
1. (Switch on front of unit.) This gives a half-open damper
which will increase the air volume passing through the hood.
2. Turn the knob to position 2. This gives a fully open
damper which will allow even more air through the kitchen
hood.
3. Turn the knob to position 3. This will give a fully-open
damper which will allow even more air through the kitchen
hood, in that the fans go to speed 3.
4. The air volume through the unit can also be increased by
setting the fans to speed 3 via the control panel (external
panel). See separate instructions.
The damper needs closing again manually. There is no timer
in the damper. Closed in position O.
The air entering the unit through the kitchen hood does not
pass through the rotary heat exchanger (by-pass).
Fig. 16

18
12 Final checks/first use
12.1 Final Checks
Check that:
• The duct insulation is in accordance with the manual
and the technical documents. It is very important the
ducts from the unit are also effectively insulated so that
no condensation forms on or in the ducts. It is especially
important to check this if the ducts are to be boxed in.
• Ducts are connected to the right nipples – check against
the unit drawings below.
• Adjustments have been made in accordance with the
manual and project planning documents (documentation
of ventilation data).
• The unit operates normally at all stages.
• Heating switches in.
• The unit has filters for both outdoor air and extract air.
• Tumble dryers must not be connected to the unit.
The installer may be held liable for any incorrect
or defective installation.
Flexit SPIRIT K2 R, Right-hand modelFlexit SPIRIT K2 R, Left-hand model
12.2 First use
• Check that the control panel has been connected.
• Plug the unit into the mains supply.
• The unit will now start.
• The unit will automatically perform a start-up procedure
lasting approx. 2 min.
• After the start-up procedure the unit will follow the settings
entered on the control panel.
• If it is wished to check or alter the settings, this can be
done from the control panel.
(See separate documentation for automatic control.)

19
13 EC Declaration of Conformity
This declaration confirms that the products meet the
requirements in the following Council Directives and
standards:
2004/108/EF Electromagnetic Compatibility (EMC)
2006/95/EF Low-voltage Directive (LVD)
1253/2014 Ecodesign regulation
1254/2014 Energy labelling regulation
Our products have been tested in accordance with parts of:
2006/42/EC Machinery Directive (Safety)
Manufacturer: FLEXIT AS, Televeien 15, 1870 Ørje, Norway
Type: K2 R Ventilation unit
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
and maintained correctly. 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 reception station
for recycling of electric and electronic equipment.
By ensuring the correct disposal of the equipment, you will contribute
to preventing the 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 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.
Conforms to following standards:
Safety standard EN 60335-1:2012 + A11
EMF standard: EN 62233: 2008
EMC standard: EN 55014-1.2006 + A1 + A2
EN 61000-3-2: 2006 + A1 + A2
EN 61000-3-3: 2013
EN 55014-2:1997 + A1 + A2
The product has been CE-marked: 2011
FLEXIT AS 16.02.2011
Frank Petersen
CEO

Flexit AS, Televeien 15, N-1870 Ørje www.flexit.no