Stavoklima Li Series User manual

C O M F O R T A I R C U R T A I N S T A V O K L I M A
Installation and operation manual
Li model
www.stavoklima.cz version B
EN

Installation and operation manual
2 Technical changes reserved
1. Table of Contents
1. Table of Contents ............................................................................................................................................................. 2
2. Unpacking, check after transport or warehousing ........................................................................................................... 3
2.1. Unpacking and check .............................................................................................................................................. 3
2.2. Storing of the curtain, additional transport recommendations.............................................................................. 4
3. Safety measures ............................................................................................................................................................... 4
4. Basic information about the curtain and its use............................................................................................................... 5
5. Dimensions of the curtain ................................................................................................................................................ 6
6. Curtain installation - wall-mounting or anchoring............................................................................................................ 7
6.1. Additionally arrested ZSA suspensions under ceiling.............................................................................................. 7
6.2. “U” under-ceiling suspension.................................................................................................................................. 8
6.3. “S” under-ceiling suspension .................................................................................................................................. 8
6.4. “N” wall-mounting suspension ............................................................................................................................... 9
6.5. SPS-4-Li connection kit.......................................................................................................................................... 10
6.6. Under-ceiling installation –general information .................................................................................................. 10
7. Connection of the curtain to heating system ................................................................................................................. 11
7.1. Heat exchanger control using a valve with thermostatic head............................................................................. 12
7.2. Heat exchanger control with a valve with electrothermic head ........................................................................... 12
7.3. Setting of independent valve flow pressure (ETVQ) ............................................................................................. 12
8. Types of controllers and options for controlling ............................................................................................................ 13
8.1. ECON controller .................................................................................................................................................... 13
8.2. Ditronic Touch controller...................................................................................................................................... 13
9. Electric connection of the curtain................................................................................................................................... 14
9.1. Unlocking of emergency thermostat for curtains with the electric heater........................................................... 14
10. Commissioning, starting of the curtain........................................................................................................................... 15
11. Optional accessories - depending on equipment level................................................................................................... 15
12. Basic service and maintenance information................................................................................................................... 15
12.1. Troubleshooting.................................................................................................................................................... 16
13. Cleaning/replacement of the filter ................................................................................................................................. 17
14. Decommissioning –disposal........................................................................................................................................... 17
15. Important notes.............................................................................................................................................................. 17
Explanation of symbols used
Instructions for mechanical repairs and
maintenance.
Important safety information, technical
information, data and device output.
Important electric information - read carefully -
curtain damage hazard in case of wrong
installation.
Important information - please read carefully.

Comfort Li air curtain
Technical changes reserved 3
2. Unpacking, check after transport or warehousing
2.1. Unpacking and check
Carefully check the delivery note attached to the delivery. For components identified as extra accessories in the delivery note (not
included in the curtain or installed therein), please check completeness to the parcel and perfect condition (usually delivered in a
separate box). Report any serious damage to packaging or boxes, and make a basic record to the parcel transport documents.
Inform the transport company or manufacturer (if the manufacturer arranges transport) immediately.
The curtain is packed in two different types of packaging. Li0, Li1 is packed in a cardboard packaging with wooden sides. Li2 is
packed on a pallet with a protective frame around. When unpacking, follow the procedure diagrammatically shown below.
All packaging material used is environmentally friendly and may be reused or recycled. Dispose of or reprocess the non-
environmentally friendly components correctly.
Li0, Li1 packaging
Remove upper transport box by unscrewing the screws
from the box side (refer to figure). The screws are
hignlighted in red.
Li2 packaging
Remove the protective frame by unscrewing the screws
from the pallet side (refer to figure).

Installation and operation manual
4 Technical changes reserved
2.2. Storing of the curtain, additional transport recommendations
Observe packaging decals on the curtain. The device in its packaging must not be
turned or placed in transport positions other than those supplied and recommended
by the manufacturer. Packaging also contains production number and curtain type
for easy curtain type identification.
Use genuine packaging for further transport of the curtain. The packaging is tested
for re-use, and a different packaging may cause damage to the curtain.
Use means with certified sufficient loading capacity for transport and handling;
properly qualified persons only may operate the transport means.
Permissible warehousing conditions: -10°C ÷ 50°C, 50-85% humidity without
condensation.
Do not remove genuine packaging until installation is complete (to avoid device
damage). At least 2 persons are recommended for safe handling.
3. Safety measures
The curtain has been manufactured in line with the government decrees and Czech standards harmonized with the EU regulations
mentioned in the manufacturer’s declaration of conformity.
The above mentioned product complies with the following standards:
ČSN EN 60335-1 ed.3 ČSN EN 60335-2-30 ed. 3
ČSN EN IEC 61000-6-2 ed. 4 ČSN EN 61000-6-3 ed. 2
The above mentioned product complies with the following directives:
Directive 2009/125/EC of the European Parliament and of the Council establishing a framework for the setting of eco-design
requirements for energy-related products.
Government Decree No. 118/2016 Coll. Directive 2014/35/EU of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment
designed for use within certain voltage limits.
Government Decree No. 117/2016 Coll. Directive 2014/30/EU of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to electromagnetic compatibility.
Government Decree No. 481/2012 Coll. (Regulation of the European Parliament and of the Council No. 2014/35/EU,
Regulation of the European Parliament and of the Council No. 2011/65/EU).
Government Decree on restriction the use of some hazardous materials found in electrical and electronic products.
Observe generally applicable national provisions and other related regulations. Unplug the curtain from mains before any service
intervention. Connection and earthing of the electric device or components thereof must be in line with laws applicable in the
country of use. Only qualified staff may carry out any electric service works.
Observe applicable laws, in particular:
on safety of electric and thermal appliances,
on central heat distribution systems,
on fire safety,
do never exceed working pressure and temperature specified in the production label.
Follow standards and rules applicable in the country of use, in particular the fire safety of appliances and heat sources, and the
fire technical properties of materials - flammability levels. Place the curtain 150mm from B, C1, C2 level flammable materials, and
400mm and 1000mm for C3 level easily flammable materials in the radiation direction (air flow from the curtain).

Comfort Li air curtain
Technical changes reserved 5
4. Basic information about the curtain and its use
An air curtain is a device, which produces a natural air barrier against penetration of cold air into heat environment (in summer,
it operates as a protection against penetration of hot summer air to the spaces being either cooled or air conditioned). These
devices are suitable for basic and non-aggressive environments. The permitted temperature range in the space is 5–40 °C.
For the curtaining purposes, either circulation air of the environment temperature or the circulation air heated by hot-water or
electric heater may be used. The use of the device can save high cooling costs in the air conditioned spaces. Full performance of
the curtain may be provided only when maintenance is regular and proper. All controls are accessible and well maintained.
Technical conditions for curtain operation:
max. media working temperature 90°C/pressure 1.6MPa – unless specified otherwise,
hot water working voltage –230V/50Hz, electric heater curtain working voltage - 400V/50Hz,
max. surrounding temperature 40 °C,
IP rating of hot water curtain - IP 20/IP rating of electric heater curtain - IP 20,
the curtain is intended for basic and non-aggressive environment,
the hot water curtains are equipped with a filter - use only the filters supplied by the manufacturer!
minimum pressure difference 23kPa must be provided for use of a 2W valve (applies only to a
pressure-independent valve).

Installation and operation manual
6 Technical changes reserved
5. Dimensions of the curtain
Model
Dimensions (mm)
V
H
H2
a
b
m
n
k
Exhaust
height max
THCP-100-4-Li0N/E
330
700
730
120
80
160
260
470
2500
THCP-150-4-Li0N/E
330
700
730
120
80
160
260
470
2500
THCP-200-4-Li0N/E
330
700
730
120
80
160
260
470
2500
THCP-250-4-Li0N/E
330
700
730
120
80
160
260
470
2500
THCP-100-4-Li1N/E
330
700
730
120
80
160
260
470
2800
THCP-150-4-Li1N/E
330
700
730
120
80
160
260
470
2800
THCP-200-4-Li1N/E
330
700
730
120
80
160
260
470
2800
THCP-250-4-Li1N/E
330
700
730
120
80
160
260
470
2800
THCP-100-4-Li2N/E
385
830
860
140
100
185
320
560
3500
THCP-150-4-Li2N/E
385
830
860
140
100
185
320
560
3500
THCP-200-4-Li2N/E
385
830
860
140
100
185
320
560
3500
THCP-250-4-Li2N/E
385
830
860
140
100
185
320
560
3500

Comfort Li air curtain
Technical changes reserved 7
6. Curtain installation - wall-mounting or anchoring
6.1. Additionally arrested ZSA suspensions under ceiling
The door curtain is suspended in four (or five for the curtain of the length of 2,500mm)
suspension points on the curtain casing. The suspension points are accessible from outside
and rivet nuts (M10 threads) are installed on the curtain from production plant.
Upon special purchase order, the following is supplied as accessories to the ZSA under-ceiling
suspensions:
4 pcs of M10x1000 threaded bar, 4 pcs of M10/40 anchors, 4 pcs M10 left-right suspension
sleeve, 4 pcs of M10 left-right bolt, 8 pcs M10 nuts (for assembly refer to figure on the right).
Measure the position of the curtain and its distance from the ceiling, and cut the threaded
bars to required length. Mark the anchoring points according to drilling scheme (refer to
figure) and drill the ceiling holes for installation of anchors. First, attach left-right bolt into
the curtain, fasten with nuts, and rotate left-right suspension sleeves on the bolt. Fit the
threaded rods into the prepared ceiling anchors and rotate the nuts. Set the curtain into the
required position and tighten up the suspension sleeve to the threaded bars until the
required connection is made, then secure the sleeve with nuts.
Pay attention to correct fitting of all nuts to all assembly components. Pay attention to the
end position of the threads to avoid loosening and falling the curtain by rotation.
M10 anchor
M10 nut
M10 nut
left-right M10
suspension sleeve
left-right M10 bolt
M10 threaded rod
Horizontal installation
Vertical installation

Installation and operation manual
8 Technical changes reserved
6.2. “U” under-ceiling suspension
The door curtain is suspended in four
suspension points on the curtain casing. The
suspension points are accessible from outside
and rivet nuts (M10 threads) are installed on
the curtain from production plant.
Upon special purchase order, the following is
supplied as accessories to the U under-ceiling
suspensions:
1 pc cover, 2 pcs outer casing, 2 pcs inner
casing, 2 pcs foot, 4 pcs M10x1000 threaded
rod, 4 pcs M10/40 anchor, 4 pcs left-right M10
suspension sleeve, 4 pcs left-right M10 bolt, 8
pcs M10 nuts, 30 pcs 4.8x13 metal sheet screw.
Measure the position of the curtain and its
distance from the ceiling, and cut the threaded
bars to required length. Mark the anchoring
points according to drilling scheme (refer to figure) and drill the ceiling holes for installation of anchors. Fit the threaded rods into
the prepared ceiling anchors and rotate the nuts. First, attach left-right bolt into the curtain, fasten with nuts, and rotate left-right
suspension sleeves on the bolt. Please start with the suspension. Slide the outer casing into the inner casing and screw the food
on the inner casing using metal sheet screws. Combine the assembles using the cover, fit in the air curtain, and screw the screws
in the metal sheet. Then, set the air curtain into the required position and tighten up the suspension sleeve to the threaded bars
until the required connection is made, then secure the sleeve with the nuts. Slide out the suspension inner casing up to height
required and fasten the screws in the metal sheet.
Pay attention to correct fitting of all nuts to all assembly components. Pay attention to the end position of the threads to avoid
loosening and falling the curtain by rotation.
6.3. “S” under-ceiling suspension
The door curtain is suspended in four
suspension points on the curtain casing. The
suspension points are accessible from outside
and rivet nuts (M10 threads) are installed on
the curtain from production plant. The “S”
under-ceiling suspension is fitted in five
suspension points.
Upon special purchase order, the following is
supplied as accessories to the S under-ceiling
suspensions:
1 pc runner, 2 pcs runner lid, 1 pc central inner
suspension, 1 central outer suspension, 1 pc
suspension lid, 5 pcs M10x1000 threaded rod, 5
pcs M10/40 anchor, 5 pcs left-right M10
suspension casing, 5 pcs left-right M10 bolt, 10
pcs M10 nuts, 4 pcs Allen M10x30 bolt, 20 pcs
Allen FL M5x12 bolt, 4 pcs M5 nuts, 4 pcs washer size 10, 4 pcs spring washers size 10.
Measure the position of the curtain and its distance from the ceiling, and cut the threaded bars to required length. Mark the
anchoring points according to drilling scheme (refer to figure) and drill the ceiling holes for installation of anchors. Fit the threaded
rods into the prepared ceiling anchors and rotate the nuts. Start with the under-ceiling suspension. Slide the central inner
suspension to the central outer suspension and place it on the runner to the points where the riveting nuts (M10 threads) are
located. Screw using the left-right bolts, fasten with nuts, and rotate left-right suspension sleeves on the bolt. Slide the under-
ceiling suspension onto the threaded rods and set to the required position. Tighten up the suspension sleeve to the threaded bars
until the required connection is made, then secure the sleeve with nuts. Then, place the air curtain under the suspension and
screw with M10 Allen bolts. Slide out the central inner suspension up to the required height and fasten with the bolts. Cover the
open points on the under-ceiling suspension with lids using M5 Allen bolts.

Comfort Li air curtain
Technical changes reserved 9
Pay attention to correct fitting of all nuts to all assembly components. Pay attention to the end position of the threads to avoid
loosening and falling the curtain by rotation.
6.4. “N” wall-mounting suspension
The door curtain is suspended in four suspension points on the curtain casing. The suspension points are accessible from outside
and rivet nuts (M10 threads) are installed on the curtain from production plant.
Upon special purchase order, the following is supplied as accessories to the N wall-mounting suspensions:
2 pcs casing, 2 pcs brackets, 8 pcs M10x30 Allen bolts, 6 pcs M10x120 screws, 14 pcs flat washer size 10, 14 pcs spring washers
size 10, 4 pcs 40x40mm square tube plug, 6 pcs 12x60 plastic dowel.
Assembly option A
Assembly option B
Assembly option C
Assembly option D

Installation and operation manual
10 Technical changes reserved
Measure out the position of the curtain and the wall-mount. Mark the anchoring points and drill holes for installation of wall plugs
to the wall. Connect the wall-mounted hanger to the wall using the attached connection material. Install the wall-mounted hanger
to the curtain using the Allen bolts and washers in the supply. Pay attention to fitting of full amount of bolts and all important
fixing material.
Use quality anchors and wall plugs only. Consider installation situation and suitability of anchoring and installation material,
including loading capacity of the structure properly. The manufacturer accepts no liability for improperly used wall plugs or other
installation and hanging material.
6.5. SPS-4-Li connection kit
The SPS-4-Li connection kit allows horizontal connection of the Li air
curtains altogether.
The following accessories for the SPS-4Li connection kit (based on a special
purchase order) is available:
1 pc double hanger, 4 pcs M10x30 Allen bolt, 4 pcs washer size 10, 4 pcs
spring washers size 10.
In case of the horizontal installation, any number of the curtains can be
combined to cover doors wider than one curtain. The kit may need
additional support. Each curtain must be hanging on all four hanging
points.
6.6. Under-ceiling installation –general information
Keep minimum distance from the ceiling and wall in order
to fully use the output of the curtain.
Use quality anchors and wall plugs only. Consider
installation situation and suitability of anchoring and
installation material, including loading capacity of the
structure properly. The manufacturer accepts no liability
for improperly used wall plugs or other installation and
hanging material.
Following the assembly, check for horizontal position in
both directions. Make sure that tightening up of individual
hangers and sleeves do not cause crossing and twisting of
the curtain. Always properly consider loading capacity of
the ceiling or of the wall. Install the device to structurally
solid beams.
Always suspend the device to all suspension points.
Minimum distance

Comfort Li air curtain
Technical changes reserved 11
7. Connection of the curtain to heating system
Please check all hot water connections for readiness and perfect condition before
connecting media to the curtain. Furthermore, please check the hot distribution for
components or other measures to ensure zero transmission of static, dynamic, and
dilatation forces at the input and output neck connections. No excessive force may be
applied when connecting the hot water circuit of the building to the curtain’s heat
exchanger. By the neck of the air conditioner there is a mark that notes use of two keys so
that no stressing of the necks occurs in the course of tightening or loosening. When bolting
and tightening up the screw union of the heat exchanger must be secured by a clamp
against undesired rotation that may subsequently result in deformations or damage to
pipe necks on the heat exchanger.
Considering the above the manufacturer clearly recommends that flexible connection hoses are used for connection of the heat
exchanger necks (available as PPH accessories, length 300mm, DN20, 25, 32), or a bellows compensator.
Any non-compliance with the instructions above results in rejection of any complaint.
By default, neck for the hot water heater is located on the right hand side on the upper part of the curtain (may be placed
elsewhere upon request). The inputs are identified by round marks –medium input red with arrow pointing inside, and medium
output blue with arrow pointing outside.
Do not swap the return and supply neck positions - this may cardinally change performance and parameters of the heater with
consequent impact on the hydraulic system. Do not exceed max temperature and pressure for which the curtain is rated.
If required, the valve may be embedded in the curtain. Some types of the valves may not be placed in the curtain for room reasons
(located outside the equipment). The value of thermostatic head is pre-set, and the function of the electrothermic valve drive is
given by a control type. The connection is then made directly on the neck for media input (third neck is blind). For setting up the
thermostatic head, refer to article 7.1 of the function of the electrothermic drive, refer to article 7.2.
Pay attention to quality of media fed to the curtain; check for installation of cleaning valve downstream the curtain (not included
in the supply). Observe max temperature and media pressure to avoid heat exchanger damage. To make sure the heat exchanger
operates correctly, drain the exchanger (sludge valve) and purge the cleaning valve because construction or assembly impurities
may be present in the system. Deaerate the heat exchanger for perfect operation of the heat exchanger. Install the closing valves
on both pipes downstream the curtain (ball valves) . Connection thread right above the curtain must be removable and not
fixed.
As required by the customer, an embedded 2-way or 3-way valve with control head can be delivered for the hot water heat
exchanger. The valve drive may be either self-acting (thermostatic) or electrothermic.
Instructions for electric connection of the valve is included in the wiring scheme for connection of the curtain. Specific wiring
scheme or valve instructions are available upon request only.
Media input
Media output
Connection of 2-way TV, ETVQ
valve
Connection of 3-way TVT, ETVT
valve

Installation and operation manual
12 Technical changes reserved
7.1. Heat exchanger control using a valve with thermostatic head
The thermostatic head for 2-way (TV) and 3-way (TVT) valves is always supplied with the sensor separated
(temperature range25–65 °C) – exhaust air temperature control. Setting of the required closing
temperature is made on the head scale (1–5). Temperature degrees with respect to the numbers on the
head are expressed as follows:
7.2. Heat exchanger control with a valve with electrothermic head
The electrothermic valve drive can be supplied to the hot water heat exchanger as embedded either as 2-way
(ETVQ) or 3-way (ETVT).
“Normally open” version (NO).
When the thermal drive is under voltage, the electrically heated sensor heats up Upon “dead time” expiration
for continuous opening of thermic drive due to cooling down of the sensor.
Note:
The time delay (dead time) needs to be considered during the functional test; the opening and closing time depends on
surrounding temperature. Electric data: 230V/50Hz-3V, IP 54.
7.3. Setting of independent valve flow pressure (ETVQ)
qmax values
Setup
1
2
3
4
5
6
7
8
9
10
DN 25
370
610
830
1050
1270
1490
1720
1870
2050
2150
DN 32
800
1220
1620
2060
2450
2790
3080
3350
3550
3700
qmax = l/h for each setting with the control cone fully open
Turn the setting wheel to required value, e.g., 5.0.
Turn the setting wheel counterclockwise to
position X.
Setup
Closing

Comfort Li air curtain
Technical changes reserved 13
8. Types of controllers and options for controlling
8.1. ECON controller
The ECON controllers are intended for control of the fan and electric heater (hot water and electric) with possible connection of
external components (door contact, room or exhaust thermostat). These types of basic controls do not allow linking of the
controllers (except for Econ DUAL). Controller function is defined by type of the electric documentation. The controller is designed
for wall-mounted installation and a separate instructions manual is available.
For relevant electric wiring scheme, refer the lid for electric connection in the curtain. The scheme for a supplied product is valid
but it may be modified upon request of the customer or for production reasons depending on a specific request. The connection
between the air curtain and the controller is carried out using a 10-wire cable (not included in the supply).
8.2. Ditronic Touch controller
The Ditronic Touch controller is highly comfortable controller for fan and heater control (hot water heater and electric one) with
optional connection of external elements (door contact, BMS, etc.). Controller function is defined by type of the electric
documentation. The controller is designed for wall-mounted installation and a separate instructions manual is available. Included
to the controller is the Ni-1000 room sensor to be connected to the control board according to the electric wiring documentation.
The connection between the air curtain and the controller is made using a UTP cable with RJ 45 connector (available as optional
accessories in various lengths).
ECON controller
OR
ECON controller
ECON EC controller
OR
ECON TR control board
ECON EC control board
ECON-COM-ET control board
DITRONIC control
board
(inside the unit)
Room sensor
Ni-1000
Controller
DITRONIC TOUCH
ECON DUAL controller –for control of two air curtains at
the same time

Installation and operation manual
14 Technical changes reserved
9. Electric connection of the curtain
The curtain must be protected by a suitable circuit breaker
according to its electric parameters –refer to attached electric
wiring. Connect the ready-to-install cables to the terminals
following the attached electric wiring schemes, make connection
check, equipotential bonding, and finally turn the power supply
on. Use the cable wires with cross section suitably rated according
to the current load –refer to electric wiring documentation.
The electric grommets for cable are located always on the
opposite side of the standard curtains than connection of hot
water medium. When connecting the electric installation, it is
necessary to open the review board and unscrew the box.
Make sure the cable is neither twisted nor deformed in any way.
Keep free ends of the cable wires sufficiently long for easy
handling and cut the wire only after you are sure the wire is long
enough.
Observe generally applicable national provisions, particularly ČSN 12 2002 and other related regulations. Unplug the curtain from
mains before any service intervention. Provisions of ČSN 332190, 332000-5-51 ed. 3, and 33 2000-5-54 ed. 3 must be observed
for connecting and earthing of the electric devices. Qualified electrician only may perform any electric service works (qualification
according to Section 6 of Decree of ČBU No. 50/78 Coll.).
During assembly, carefully check everything and carry out the initial review of the device. Check operation of the FU1-FU3 electric
fuses (Ditronic) for interior circuits (for fuse values, refer to the box of electronics), and make sure that the external components
(accessories), which may have an essential impact on correct function of the device, operate.
ATTENTION: The delivery note serves as a warranty sheet!
9.1. Unlocking of emergency thermostat for curtains with the electric heater
The curtains fitted with the electric heater are provided with operation thermostat with automatic reset feature (located on each
heater) and emergency thermostat with manual reset.
When permitted limit temperature inside the curtain is exceeded, heating circuit is turned off by the emergency thermostat =
pushbutton sprung up. The button is used to unlock the safety thermostat in case of the device failure. After cooling down the
thermostat button needs to be pressed back to default position (refer to figure).
ATTENTION –unblocking of the emergency thermostat does not resolve failure of the curtain! Always remedy the cause of the
thermostat overheating!
Covering of the air curtain with any strange objects is prohibited ►risk of fire!!!
Illustration of bushings for cable

Comfort Li air curtain
Technical changes reserved 15
10. Commissioning, starting of the curtain
Before commissioning make and check:
•covers and shell of the curtain are in perfect condition,
•mechanic fixing and anchoring of the curtain,
•ability to remove the filter and its cleanliness,*/**
•fixing of thermostatic head and its setting,*/**
•function of circulating pump (not included in the device),**
•correct connection of media and tight connections,**
•tightness and function of the valves,*/**
•availability of power voltage,
•correct connection of all curtain cables,
•fitting and setting of a pre-circuit breaker (not included in the device),
•free from mechanical impurities or objects.
* if installed
** hot-water version only
Initial review of the electric appliance according to ČSN 331500 and ČSN 33 2000-6-61 ed. 2 must be made upon commissioning.
11. Optional accessories - depending on equipment level
The most frequent accessories include thermostatic or electrothermic valves for the temperature control (chapter 7.1 and 7.2).
The valves are usually embedded by the manufacturer, for all available valve types refer to the catalogue.
Another accessory used is the door contact (either magnetic or mechanic). The contacts are placed on the door wings or door
parts in order to signal the position of the door.
An optional accessories may be e.g., room thermostat, hanging of the curtain, 0–10V signal control of the curtain over the superior
BMS, and more. Selection of an appropriate type of accessories must be supported by the controller type.
For all accessories offered for the Li curtain, refer to the catalogue documentation.
12. Basic service and maintenance information
All curtains are thoroughly checked and tested by the manufacturer before dispatch. The most frequent errors root from
misunderstanding of the curtain function or incorrect cabling and connection. For this, observe instructions from the manufacturer
to avoid complex troubleshooting. In no case try to operate the curtain when connected in a different way - the curtain may
operate for a while as you wish or expect but this irreversible step may result in damage beyond repair and loss. No warranty
claims can be accepted with respect to this damage.
The Li air curtains are made of quality materials that require no special maintenance. However, we recommend that maintenance
in required or shorter (depending on your observations due to operation in a specific application) intervals is carried out for long
lifecycle of the curtain.
Before any work with the curtain, disconnect the electric power supply, mains supply for the curtain. Electric shock hazard!!!
Observe generally applicable national provisions, particularly ČSN 12 2002 and other related regulations. Unplug the curtain from
mains before any service intervention. Provisions of ČSN 332190, 332000-5-51 ed. 3, and 33 2000-5-54 ed. 3 must be observed
for connecting and earthing of the electric devices. Qualified electrician only may perform any electric service works (qualification
according to Decree of ČBU No. 50/78 Coll., § 6 is required).
Please contact your vendor or distributor for a service agreement. You will get regular service and excellent care of your curtain.

Installation and operation manual
16 Technical changes reserved
Quarterly checks:
Curtain hanging and tightening of all bolt connections. Check tightening of bolts of exhaust splines - accessible from internal
side wall of the curtain, tighten the central splines by turning the splines (by tightening of the internal thread pin).
Heat exchanger space check and remove dirt or foreign objects (use vacuum cleaner for dedusting, or steam for stuck dirt).
When using steam for removal of dirt, always proceed downstream the air flow. Set as lowest temperature as possible and
as lowest steam pressure as possible for not to damage the heat exchanger by cleaning (remove filter before cleaning –filter
damage hazard).*
Check cleanliness of the motor body and inner or outer parts of the curtain. Do not wash the motor body with water! Wipe
with lukewarm towel only –motor winding damage hazard; after the motor is cleaned, do not turn the curtain on for 60
minutes –let it dry properly. Proceed carefully when wiping of the exhaust splines - fragile splines - danger of damage!
Before winter, check in particular the anti-frost protection function, superior circulating pump (not included in the supply of
the device), setting of thermostatic or electrothermic valve.*
Re-test tightness of the curtain or of installed fittings on the water side. If a sludge filter is installed before the curtain –clean
the filter and check deaeration of the heat exchanger.*
Check curtain safety with respect to electric shock hazard according to applicable ČSN or national standards, including
earthing inspection.
Thorough cleaning of the suction grid, exhaust splines (tighten up, if necessary).
* if installed
12.1. Troubleshooting
Problem
Possible cause
Remedy
The curtain cannot be turned on
Curtain circuit-breaker is off
Turn on
Mains failure
Inspection
Fuse in the curtain
Inspection
Door contact
Check connection or interconnection
Anti-frost protection
Inspection
Controller position “0”
Check, > position than “0”
External contact
Check connection or interconnection
Noisy motor
Defective motor mount
Check - replacement
Clogged filter*
Check - replacement
Motor overheats (motor thermal
contact turns off)
Defective motor mount or winding
Replace fan curtain
Clogged filter*
Check, clean
Heavily soiled motor –insufficient cooling
Check, clean
Excessive temperature of intake air
Inspection
Excessive temperature of intake medium
Check setup, remove
The fan delivers little air only
Clogged filter*
Check - replacement
Soiled heat exchanger
Check - replacement
Curtain is not heating
Broken or clogged medium supply
Check - replacement
Little air flows through the heat exchanger
Check - remove
Soiled heat exchanger splines
Remove
Insufficient media temperature
Remove
Medium does not circulate
Check, deaerate
Temperature achieved in line with
controller setup
Controller setup
Defective drive of electrothermic valve
Check setup, or replace if defective
Automatic operation disconnection
Overheated motor
Find out and clear the cause
Door contact
Check correct function (refer to
controller description)
External clock
Check correct function (refer to
controller description)
* if installed

Comfort Li air curtain
Technical changes reserved 17
13. Cleaning/replacement of the filter
Hot-water curtains are fitted with an air filter. The filter must be cleaned regularly to ensure the efficiency of the curtain and its
performance levels. The frequency of cleaning depends on local conditions under which the curtain operates –checking of the
filter and cleaning thereof is recommended at least monthly. Clogged filter does not stand for a safety risk but operation of the
curtain may deteriorate.
Filter removal:
1. Remove the plastic blinds on the curtain’s front panel and use
an Allen wrench to loosen the bolts that lock the revision
board, which then tips out.
2. Release the filter from the curtain by rotating the locks on the
filter sides –the filter is accessible through the suction hole.
3. Remove the filter and get rid of the dust particles. Replace the
filter if the clogging is still apparent despite thorough cleaning,
or if the fabric is mechanically damaged.
A spare filter can be ordered as optional accessory in the set of 3
pieces. Use genuine filters only. Use of a filter other than the one
approved by the manufacturer is prohibited.
14. Decommissioning –disposal
After the expiration of the service life, the curtain mustbe disassembled and disposed of. Only qualified company may disassemble
the device. The product or components thereof must be disposed in environmentally-friendly manner at the end of its service life.
The components of the curtain must be separated and sorted out by type of material for disposal. Dispose of the metal and plastic
components at your local collection yard. The transport packaging of the product is made of common recyclable material (paper,
polyethylene, wood) and is labelled as such according to ČSN 77 0052-2.
As far as disposal is concerned, it is operator’s responsibility to comply with applicable national provisions in the country of use.
In addition, follow regulations and laws of your country applicable to waste disposal. Separated collection and recycling of the
products may help to protect environment and human health.
15. Important notes
The door curtains are intended to avoid heat or cold loss, filtration, and heating, or for ventilation in combination with mixing
accessories. Other uses are not intended. The manufacturer accepts no liability for damage resulting from use other than
intended. Observe this manual in operation of the curtains.
Installation, electric connection, and repairs must be carried out by qualified persons according to § 6 of Decree No. 50/78 Coll.
or according to applicable national standards and regulations. An expert company is needed to connect the heating medium.
Before the start of the heating season, it is necessary to provide the required amount of heating medium with the design values
for curtains with the hot water heater.
The manufacturer reserves right to changes for marketing or production reasons without prior notice!

Installation and operation manual
18 Technical changes reserved

Comfort Li air curtain
Technical changes reserved 19

Installation and operation manual
20 Technical changes reserved
STAVOKLIMA s.r.o.
Budějovická 450, 370 01 Homole
Phone: [phone]
e-mail: [email protected]
www.stavoklima.cz