Stavoklima Tubex User manual

D ESI G N AI R C UR TAI N S T A V O K L I M A
Installation and operation manual
Tubex, Tubex XL model
www.stavoklima.cz version 0
EN

Installation and operation manual
2Technical 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 unit, additional transport recommendations................................................................................... 3
2.3. Safety measures...................................................................................................................................................... 4
3. Basic information about the unit and its use.................................................................................................................... 4
4. Dimensions of the unit ..................................................................................................................................................... 5
5. Mounting of the unit –floor anchoring............................................................................................................................ 6
6. Connection of the unit to heating system ........................................................................................................................ 8
6.1. Heat exchanger control using a valve with thermostatic head............................................................................... 9
6.2. Heat exchanger control with a valve with electrothermic head ............................................................................. 9
6.3. Setting of independent valve flow pressure (ETVQ) .............................................................................................. 9
7. Types of controllers and options for controlling ............................................................................................................ 10
7.1. ECON controller .................................................................................................................................................... 10
7.2. Ditronic Touch controller...................................................................................................................................... 10
8. Electric connection of the unit........................................................................................................................................ 11
8.1. Unlocking of emergency thermostat for units with the electric heater............................................................... 11
9. Commissioning, starting of the unit................................................................................................................................ 12
10. Optional accessories - depending on equipment level................................................................................................... 12
11. Basic service and maintenance information................................................................................................................... 12
11.1. Troubleshooting.................................................................................................................................................... 13
12. Cleaning/replacement of the filter ................................................................................................................................. 14
13. Decommissioning –disposal........................................................................................................................................... 14
14. Important notes.............................................................................................................................................................. 15
Explanation of symbols used
Instructions for mechanical repairs and
maintenance.
Important safety information, technical
information, data and device output.
Important electric information - read carefully -
unit damage hazard in case of wrong installation.
Important information - please read carefully.

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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 unit 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.
All packaging material used is environmentally friendly and may be reused or recycled. Dispose of or reprocess the non-
environmentally friendly components correctly.
When unpacking, follow the procedure diagrammatically shown below:
2.2. Storing of the unit, additional transport recommendations
Observe packaging decals on the unit. 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 unit type for easy unit
type identification.
Use genuine packaging for further transport of the unit. The packaging is tested for
re-use, and a different packaging may cause damage to the unit.
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.
Remove the protective frame by unscrewing
the screws from the pallet side (refer to figure).

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2.3. Safety measures
The unit 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 unit 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 unit 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 unit).
3. Basic information about the unit and its use
An air unit is a device, which produces a natural air barrier against penetration of cold air into heat environment (in summer, it
operates as a protection againstpenetration of hot summer air to the spaces being either cooled or air conditioned). These devices
are suitable for basic and non-aggressive environment. 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 unit may be provided only when maintenance is regular and proper. All controls are accessible and well maintained.
Technical conditions for unit operation:
max. media working temperature 90°C/pressure 1.6MPa – unless specified otherwise,
hot water working voltage –230V/50Hz, electric heater unit working voltage - 400V/50Hz
max. surrounding temperature 40°C,
IP rating of hot water unit - IP 20/IP rating of electric heater unit - IP 20,
the unit is intended for basic and non-aggressive environment,
the hot water and non-heating units 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).

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4. Dimensions of the unit
Model
Dimension (mm )
A
B
C
Tubex
340
425
75
Tubex XL
420
520
85

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5. Mounting of the unit –floor anchoring
The door Tubex and Tubex XL unit is designed as a vertical unit with media connection (heating medium and electric connection)
of the lower portion of the unit (unless ordered otherwise). A reinforced side wall for anchoring to the floor is located in the lower
part of the unit. The side wall of the unit is accessible after the review board is opened and demounted.
Open the unit as follows:
1. Use the Allen wrench to loosen the bolts that lock the grid.
2. Demount the grid.
3. Then, use the Allen wrench to loosen the bolts that lock the revision board. The bolts are located in the air exhaust and in
the lower and upper portion of the review board.
4. Demount the review board.
During installation, proceed carefully to avoid personal injury or unit damage due to fall.
Installation on the left from the door
Installation on the right from the door
Demounting of the grid
Demounting of the review board

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Refer to Figures below and make preparations on the floor for anchoring side wall. The floor must be final after all construction
works, i.e., after tiling, final concreting, and paving or with the final surface finish!
Let the connection cables sufficiently long. For hot air unit, the cables lead up to the upper portion of the unit.
!!Distribute media and make lengths of the terminations exactly according to the scheme!!
Mark the anchoring points and drill holes for installation of wall plugs and anchor. Check for absolute levelness of the foundation
plate! Lead all connection cables through the hole for electric installation and install the air curtain to pre-prepared media pipes.
The anchoring material is included in the supply and consists of:
4 pcs of 10x120 combi bolt, 4 pcs 12x60 plastic wall plugs, 4 pcs M10
nuts, 4 pcs size 10 washer, 4 pcs spring washers size 10.
Use quality anchors and wall plugs only! Consider installation
situation and suitability of anchoring and installation material. The
manufacturer accepts no liability for improperly used wall plugs or
other installation and anchoring material. We recommend that
protective sleeve is used for the cables at the points of their entries
(not included in the supply). Make sure that no crossing and twisting
of the unit occurs by tightening up the anchoring keys.
Check vertical position after assembly. In case of floor unevenness,
the unit must be moderately underlaid.
Model
Dimension (mm )
M
N
O
P
R
S
Tubex
135
100
95
385
70
120
Tubex XL
175
140
125
475
85
170
Ground floor view

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6. Connection of the unit to heating system
Please check all hot water connections for readiness and perfect condition before
connecting media to the unit. 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 unit’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.
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 lower portion on the upper
part of the unit (may be placed elsewhere upon request). They are usually terminated
by ball valves . 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 unit is rated.
The necks for media connection must be prepared and mounted in full conformity
with the illustrated drawing. Do not forget to mount closures of both media
directions (unless included in the supply).
If required, the valve may be embedded in the unit. Some types of the valves may
not be placed in the unit 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
6.1 of the function of the electrothermic drive, refer to article 6.2.
Pay attention to quality of media fed to the unit; check for installation of cleaning
valve downstream the unit (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.
The deaeration valves are located in the upper portion of the heat exchanger and may be accessed after the suction grid is open
(refer to figure). When deaerating or filling the heat exchanger with medium, first close the return pipeline closure, then open the
deaerating valve, and release the closure to fill in the heat exchanger.
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 unit. Specific wiring scheme
or valve instructions are available upon request only.
Media input
Media output
Connection of 2-way ETVQ valve
Connection of 3-way TV, ETVT valve
Illustrative connection of sockets
Deaeration valves

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6.1. Heat exchanger control using a valve with thermostatic head
The thermostatic head for 3-way (TVT) valves is always supplied with the sensor separated (temperature
range 25–65 °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:
6.2. 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.
6.3. 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

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DITRONIC control board
(inside the unit)
Room sensor
Ni-1000
Controller DITRONIC TOUCH
Dimensions: w. 148 x h. 80 x d. 33 [mm], IP 20
7. Types of controllers and options for controlling
7.1. 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 unit. 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).
7.2. 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
Dimensions: width 71 x height 71 x depth 25 [mm]
IP 20
OR
ECON TR control board
(inside the unit)
ECON-COM-ET control board
(inside the unit)

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8. Electric connection of the unit
The unit 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.
When connecting the electric installation, it is necessary to open the suction
grid and unscrew the box lid with a Phillips screwdriver.
Make sure the cable is neither twisted nor deformed in any way. Keep free
ends of the cable wires sufficiently long for easy handling (for the hot water
unit, the cables run up to the upper portion) 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 unit 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!
8.1. Unlocking of emergency thermostat for units with the electric heater
The units 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 insidethe unit 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 unit! Always remedy the cause of the
thermostat overheating!!!
Covering of the air curtain with any strange objects is prohibited ►risk of fire!!!
Passage illustration
for cable

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12 Technical changes reserved
9. Commissioning, starting of the unit
Before commissioning make and check:
•covers and shell of the unit are in perfect condition,
•mechanic fixing and anchoring of the unit,
•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 unit 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.
10. Optional accessories - depending on equipment level
The most frequent accessories include thermostatic or electrothermic valves for the temperature control (chapter 6.1 and 6.2).
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 unit, 0–10V signal control of the unit 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 Tubex and Tubex XL unit, refer to the catalogue documentation.
11. Basic service and maintenance information
All units are thoroughly checked and tested by the manufacturer before dispatch. The most frequent errors root from
misunderstanding of the unit function or incorrect cabling and connection. For this, observe instructions from the manufacturer
to avoid complex troubleshooting. In no case try to operate the unit when connected in a different way - the unit 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 Tubex and Tubex XL air units 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 unit.
!!! Before any work with the unit, disconnect the electric power supply, mains supply for the unit. Electric shock hazard. !!!
Observe generally applicable national provisions, particularly ČSN 12 2002 and other related regulations. Unplug the unit 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 unit.

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Quarterly checks:
Unit positioning and tightening of all bolt connections. Then, check tightening of bolts of exhaust splines,
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 unit. 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 unit 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 (if installed), superior circulating pump (not included
in the supply of the device), setting of thermostatic or electrothermic valve,*
re-test tightness of the unit or of installed fittings on the water side. If a sludge filter is installed before the unit –clean
the filter and check deaeration of the heat exchanger,
check unit 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
11.1. Troubleshooting
Problem
Possible cause
Remedy
The unit can not be turned on
Unit circuit-breaker is off
Turn on
Mains failure
Inspection
Fuse in the unit
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 or motor unit
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
Unit 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

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14 Technical changes reserved
12. Cleaning/replacement of the filter
Hot-water units and the units without heating are fitted with an air filter. The filter must be cleaned regularly to ensure the
efficiency of the unit and its performance levels. The frequency of cleaning depends on local conditions under which the unit
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 unit may deteriorate.
Filter removal:
Use the Allen wrench to loosen the bolts that lock the grid, if released.
Release the filter from the unit by rotating the locks on the filter sides.
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.
13. Decommissioning –disposal
After the expiration of the service life, the unit must be 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 unit 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.

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14. Important notes
The door units 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 units.
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 units with the hot water heater.
The manufacturer reserves right to changes for marketing or production reasons without prior notice!

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16 Technical changes reserved
STAVOKLIMA s.r.o.
Budějovická 450, 370 01 Homole
Tel.: [phone]
e-mail: [email protected]
www.stavoklima.cz