UTEK DEH Quick start guide

GUIDE FOR INSTALLATION, USE AND MAINTENANCE
DEH
HEAT RECOVERY VENTILATION UNITS with INTEGRATED
AIR/AIR HEAT PUMP (CLIMATIZATION and DEHUMIDIFICATION
indoor air quality and energy saving

INDEX
GENERAL
MAINTENANCE REGULATIONS
INSTALLATION CONDITIONS
REMAINING RISKS
MACHINE SIGNALS
- prohibition signals
- danger and information signals
- identification signals
GOODS RECEPTION
HANDLING
STORAGE
EXTENDED DOWNTIME
START
DISASSEMBLY AND ASSEMBLY
DISPOSAL
ENVIRONMENTAL PROTECTION
INSTALLATION OF THE UNIT
BRACKETS POSITIONING
AERAULIC CONNECTIONS
HYDRAULIC CONNECTIONS
WIRING DIAGRAMS
POSITIONING OF CONNECTIONS
ELECTRICAL CONNECTIONS
REMOTE PANEL CONNECTIONS
MAINTENANCE AND CLEANING OF FILTERS
MAINTENANCE AND CLEANING OF HEAT EXCHANGER
REMOTE CONTROL
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Dear Customer
Thanks for your attention to the product UTEK , designed and manufactured to ensure the real values to the User :
Quality, Safety and Savings on working.

SAFETY STANDARDS AND “CE” MARKING
Our technicians are steadily engaged in research and
development of more and more efficient products in com-
pliance with the safety “standards” in force. The standards
and suggestions contained herein reflect the safety
standards in force and, therefore, are mainly based on the
compliance of said general regulations. Consequently, we
would suggest all people exposed to risks to comply the
accident prevention regulations in force in their respective
countries.UTEK s.r.l. are exempted from any responsibility
attributable to damage caused to persons and things
resulting from the non-compliance with the safety
standards and any product modifications. The CE marking
and the relevant declaration of conformity prove the
conformity to the applicable community regulations.
Products which are not provided with the CE marking must
be certified by the purchaser who shall have to certify the
conformity of the whole plant.
Units are as prescribed by:
- Machinery directive 2006/42/EC
- Low Voltage Directive EEC 2014/35/EU
- Electromagnetic compatibility directive 2014/30/EU
GENERAL
Safety protection devices may not be removed if this is not
absolutely necessary. In this case, suitable measures to
point out the possible danger shall be immediately taken.
The restoration of said protection devices on the product
shall take place as soon as the reasons for the temporary
removal cease. All (ordinary and extraordinary) mainte-
nance interventions shall be carried out with disconnected
machine and electrical and pneumatic supply. In order to
avoid the risk of possible accidental starts, provide the
electric panels, the central units and the switchboards with
warning signals with the following reading “caution:
control disconnected for maintenance works”. Before
connecting the electrical supply cable to the terminal
board make sure that the line voltage is in compliance
with the voltage stated on the machine plate. Replace the
product labels if, with the passing of time, they should
become illegible.
MAINTENANCE REGULATIONS
The personnel maintenance is subject to the prevention
devices must keep to the accident prevention regulations
in force and to the following instructions:
- wear suitable accident prevention clothes
- when the noise exceeds the admissible levels, use
protection headsets
- machine must be provided with an interlock which
prevents of the machine by non-authorized persons
INSTALLATION CONDITIONS
Installation allowed inside the buildings or outdoor, with
temperature between 0° to +45° C
To avoid:
- areas near sources of heat source, steam, flammable
and/or explosives gases, dusty areas
To consider:
- consider an area where the air flow and noise of the unit
don’t disturb the neighbors;
- minimum space required for the maintenance (as
defined below);
- the floor or wall must be suitable to the weight of the unit
and don’t cause vibrations;
- a position that does not block passageways or entrances;
- the unit must be canalized
- measures to protect the fan vents with special protection
to prevent contact with moving mechanical parts; The
protection degree is IP20. In case of outdoor installation,
place the unit in a place sheltered from the weather.
REMAINING RISKS
The risks of the products have been analyzed according to
the Machine Directive. (all. I of Directive 2006/42/CE) The
present handbook contains information for all persons in
charge and has the purpose to avoid possible damages to
persons and/or things attributable to remaining risks.
REMAINING RISKS
The risks of the products have been analyzed according to
the Machine Directive. (all. I of Directive 2006/42/CE) The
present manual contains information for all persons in
charge and has the purpose to avoid possible damages to
persons and/or things attributable to remaining risks.
MACHINE SIGNALS
The machine can be provided with several signalling picto-
grams which may not be removed. Said signals can be
subdivided into:
- PROHIBITION SIGNALS
Do not repair or adjust during motion
- DANGER AND INFORMATION SIGNALS
. Attention to the presence of electric current
. Automatic start Danger
. Attention to the instruction manual
. Grounding the machine
- IDENTIFICATION SIGNALS
Serial number plate: it states the product data and the
manufacturer address.
REMARK: other signals can be added to the product
according to the analysis carried out on the remaining risk.
GOODS RECEPTION
Each product is carefully checked before shipping. On
goods reception, it is necessary to make sure that products
have not suffered any damages during transport. If goods
have been delivered da maged, send a complaint to the
forward. The forwarder agent is responsible for any
transport damages.Products are wrapped and tied or
packed in self-supporting cardboard boxes which are
fastened to pallets.
HANDLING
Goods must be displaced by the correct means of
transport witha suitable carrying capacity. For pallet lifting
use forklifts. According to the standard 89/391/CEE and
following standards, manual lifting is admissible up to a
max. weight of 20 kg under shoulders level, but over floor
level.
STORAGE
Store the unit in a sheltered spot, without excessive moistu-
re and not subject to sudden changes of temperature in
order to avoid the formation of condensation inside the
unit.
EXTENDED DOWNTIME
In case of extended downtime with the unit connected to
the ventilation system, close the suction/ injection and
periodically check the absence of humidity inside the
machine. In case of condensation, dry it immediately.
STARTING
Before starting it is opportune to carry out some checks:
(follow the safety instructions
in section DISASSEMBLY AND ASSEMBLY):
- Make sure there is no condensation inside the unit, and if
necessary,wiipe
it dry before attempting to operate the unit;
- Check the filters status;
- Make sure the product does not contain any foreign
matters and that all components are fastened in their
seats;
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indoorair quality and energy saving

DISASSEMBLY AND ASSEMBLY
Before starting any operation, make sure the product is
excluded from any electrical connection and the impeller
is switched off. Disassembly and assembly are extraordi-
nary maintenance operations and must be carried out by
qualified personnel.
DISPOSAL
Directive 2012/19/EU of the European Parliament and of
the Council of 4
July 2012 on waste electrical and electronic equipment
(WEEE).
The WEEE symbol on the product or on its packaging
indicates that the product must not be disposed of with
normal household waste. Instead, such marked waste
equipment must be disposed of by arranging to return to a
designated collection point for the recycling of waste
electrical and electronic equipment. By separating and
recycling this waste equipment at the time of disposal will
help to conserve natural resources and ensure that the
equipment is recycled in a manner that protects human
health and the environment. The final user will provide to
deliver the product no longer in use in municipal electrical
and electronic waste collection, or return it to the retailed
as ollows:
- distributors provide for the collection, at retail shops with
sales areas relating to EEE of at least 400 m2, or in their
immediate proximity of very small
WEEE (no external dimension more than 25 cm) free of
charge to end-users
and with no obligation to buy EEE of an equivalent type;
- for products with external dimension more than 25 cm,
distributors are responsible for ensuring that such waste
can be returned to the distributor at least free of charge on
a one-to-one basis as long as the equipment is of equiva-
lent type and has fulfilled the same functions as the
supplied equipment. The Member States shall lay down the
rules on penalties applicable to infringements of the natio-
nal provisions adopted pursuant to
this Directive and shall take all measures necessary to
ensure that they are implemented. The penalties provided
for must be effective, proportionate and dissuasive.
ENVIRONMENTAL PROTECTION - Troubleshooting
The law on the regulation of the use of substances that
damage the ozone in the atmosphere state that it is forbid-
den to release coolant gases into the atmosphere,
obliging the users to recover these gases and return them
at the end of their useful life to dealers or special collection
centers. The coolant used by this unit is listed among the
substances that require special handling as foreseen by
current laws and that must therefore comply with the
above-mentioned provisions. It is therefore highly recom-
mendable to perform all maintenance operations with
maximum care in order to minimize coolant leaks.
ENSURING PROPER INSTALLATION, MAINTENANCE OR SERVI-
CING OF THE EQUIPMENT
Installation and maintenance or servicing of equipment
should be carried out by personnel and companies
holding an appropriate certificate.
PREVENTING AND REPAIRING LEAKAGES
All operators of stationary refrigeration, air conditioning
and heat pump applications, regardless of the amount of
the quantity of refrigerant contained, must:
- prevent leakage
- repair leakages as soon as possible once they have been
detected, through all measures technically feasible and
not entailing disproportionate costs.
CHECKING FOR LEAKAGE
Working and temporarily out of operation applications
containing 3kg or more (6kg or more in case of hermetical-
ly sealed systems labeled as such) of F-Gas refrigerant,
have to be checked for leakage at regular intervals. The
operator of the application is responsible for ensuring that
this check is carried out by certified personnel.
RECOVERING THE REFRIGERANT
Operators must make arrangements for the proper reco-
very, i.e. the collection and storage, by certified personnel
of F-Gas refrigerants from the cooling circuits of stationary
refrigeration, air conditioning and heat pump equipment
to ensure their recycling, reclamation or destruction. This
activity must take place before the final disposal of the
equipment and when appropriate during maintenance or
servicing work.
NOTE
·This product is classified as a non-hermetically sealed unit
containing fluorinated greenhouse gases governed by the
Kyoto protocol, on which its operation depends.
·For the type of refrigerant contained and the relative
quantity, refer to the product label.
·The maintenance, assistance and repair of the product
can only be carried out by qualified personnel according
to the laws in force.
·The disposal and demolition of the product can only be
carried out by qualified personnel in accordance with the
laws in force.
·In no case should the user try to intervene on the cooling
circuit or to disassemble the product.
·In relation to the quantity of refrigerant present in the
product, an annual verification of the system may be
necessary, aimed at ascertaining the absence of leaks
and filling in a special register where the checks and activi-
ties carried out are noted.
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C
AA
B D E
A
A
T abella
Colonna 1 Colonna 2 Colonna 3 Colonna 4 Colonna 5 Colonna 6
UNI T A' A [mm] B [mm] C [mm] D [mm] E [mm]
DEH 1 260 700 1220 820 300
DEH 2 330 700 1220 960 300
INSTALLATION DEH
CEILING INSTALLATION
Minimum space required for the maintenance (mm)
AB C DE F
MODEL
DEH 1
DEH 2
270
330
110
110
76
73
30
30
580
650
210
275
C
B
A
ED F
T abella
Colonna 1 Colonna 2 Colonna 3 Colonna 4 Colonna 5 Colonna 6 Colonna 7
UNI T A' A [mm] B [mm] C [mm] D [mm] E [mm] F [mm]
DEH 1 270 110 76 30 580 210
DEH 2 330 110 73 30 650 275
AB C DE
MODEL
DEH 1
DEH 2
260
330
700
700
1220
1220
820
960
300
300
Minimum space required for the maintenance (mm)
Install the unit through appropriate means (weight from 85 kg to 103 kg) in order to avoid risks during the load handling procedures. Do not
stand under the unit until it is completely attached to the ceiling. During installation you may need to work at height (over 2m H). Therefore
evaluate the risks of falling, inert suspension or generic injury and take the necessary precautions
PPE: Personal Protective Equipment
This operation must be performed ONLY BY QUALIFIED STAFF
N.B .: DEH and DEH-HYDRONIC: provide 2 siphons, the 2 condensate drains must each have their own siphon; DEH-ENTALPICO and
DEH-ENTALPICO-HYDRONIC provide 1 siphon

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Fix the fixing brackets on the most suitable profile for the installation of the unit. Use screws or rivets to fix the brackets supplied.
Then use a suitable dowel or a threaded bar for anchoring the unit to the wall.
BRACKETS POSITIONING
The unit has circular attacks for the connection of the air ducts except the air introduced into the environment which provides a rectan-
gular connections. We recommend the installation of at least 500mm of flexible pipe to avoid vibrations ,annoying noises due to installa-
tion
Table Diameter area connections to units
AREAULIC CONNECTIONS
expulsion
expulsion
fresh air
fresh air
exhaust air
exhaust air
recycling
supply air
supply air
30/15 50/20SIZE
expulsion/fresh air/exhaust air Ø [mm]
recycling Ø [mm]
fresh air [mm]
125
300X200
160
160
500X250
200
DEHUMIDIFICATION CONFIGURATION
VMC CONFIGURATION
This operation must be performed ONLY BY QUALIFIED STAFF
PPE: Personal Protective Equipment
CAUTION: Before performing any procedure on the unit make sure that there is no voltage

The units are equipped with hydraulic circuits that can vary depending on the different versions and applications. The connections on the unit, even in
different applications and versions, are always common to all units.
- Before that the water enters in to the unit (both user side, both dissipation side ), install always a thick mesh filter (max. 1 mm)
- Be sure to observe the flows shown on the plates: IN (incoming water to the unit), OUT (outgoing water from the unit)
- Make sure that the weight of the pipes doesn't go to damage the predisposed attacks
- Provide shutoff valves in the pipes flow and return pipes to the system
- All chilled water piping shall be insulated to minimize the undesirable interchange of heat and condensation.
- Before performing the filling of pipes, make sure the same does not contain extraneous materials: such as sand, stones, rust, weld spatter, slag, etc.
Otherwise make a washing of the hydraulic circuit by-passing the unit.
- Absolutely avoid cavitation of the pump and the consequent presence of air in the hydraulic circuit.
Chemical and physical properties of water
chemical and physical properties are not compatible could prejudice the integrity 'of the hydraulic parts of' Geosin units. Check the water characteristics,
especially in the case of direct application W with ground water on the heat exchanger.
ATTENTION: The water entering the coil must NOT exceed 45 ° C
COLLECTOR CONNECTION
RADIANT SYSTEM
The unit is powered by a radiant system collector circuit. Ensure that there is the required flow on the circuit.
COLLECTOR CONNECTION
RADIANT SYSTEM - RECOMMENDED -
The unit is supplied in parallel to the radiant system collector, having so 'guaranteed the necessary water flow for the correct operation.
N.B.The miss to flow nominal water in to the unit, blocks the unit
HYDRAULIC CONNECTIONS
WIRING
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POSSIBLE CONSEQUENCES WITH VALUE OUT OF LIMIT
Possible corrosion of stainless steel and rupture
exchanger dissipation
DESCRIPTION LIMIT VALUE
HARDNESS
PH VALUE
OXYGEN
CONDUCTIVITY
IRON
MANGANESE
NITRATE
SULPHATE
COMPOUNDS OF CHLORINE
CARBON DIOXIDE RADICAL FREE
AMMONIUM
< 10°F
7,5/9
< 2 mg/l
< 500 uS/cm
< 2 mg/l
< 1 mg/l
< 70 mg/l
< 70 mg/l
<300 mg/l
<10 mg/l
< 20 mg/l

The hydraulic connections are positioned in the front of the unit on side of the entrances of the air inlet ducts.
Connections are a diameter 1/2 "for Let compressor version, while 3/4" for the hydronic version.
Observe the IN as the unit water inlet and OUT as the water exits the unit.
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POSITIONING AND PROCEDURES OF CONNECTIONS
This operation must be performed ONLY BY QUALIFIED STAFF
PPE: Personal Protective Equipment
CAUTION: Before performing any procedure on the unit make sure that there is no voltage
ELECTRICAL CONNECTIONS
The unit is equipped with a series of auxiliary commands for various functions, which can be enabled or disabled depending on the needs. The functions
are located in the terminal strip of x2 'units. Below are listed the individual functions in detail.
Temperature required
The temperature required contact, enable the unit in summer or winter integration operation. it is possibile to connect a room thermostat that enables the
function at the time of request. If you use the remote control panel to set the set of comfort, leave the jumper in the terminal strip X2.
Humidity request
The request Humidity contact, will enable the unit in the operation of summer or winter dehumidify. it is possible connect an ambient humidistat that will
enable the function at the time of request.
On-Off Remote
The on-off remote, allows you to turn on or turn off the unit with a clean electrical contact. It can 'be useful to turn off the entire unit in moments of inactivity
avoiding energy consumption.
Change Summer-Winter remote
The summer - winter remotely, allows you to change the season and the work logic of the unity through a dry contact.
Operation Only Ventilation
Through the only opening of the contact of the fan, the unit will exclude out any type of adjustment on dehumidification and integration.

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REMOTE PANEL CONNECTION
The installation must be done by trained personnel. For optimum operation, the remote panel must be fixed to a Internal wall, about 1.5 m above the floor,
away from heat sources (radiators, stoves etc.) and should not be exposed to direct sunlight. Not should be installed near doors slamming may destroy the
electronics.
The connection of the remote control panel is through the connection with 3-wire cable and Belden 8772 cable (3xawg20) The maximum distance betwe-
en the controller and interface is mt.150. The 31-32-33 terminals are for the terminal connection (see wiring diagram).

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View the video about maintenance in our website www.utek-air.it
1 2
3
MAINTENANCE AND CLEANING OF FILTERS
This operation must be performed ONLY BY QUALIFIED STAFF
PPE: Personal Protective Equipment
CAUTION: Before performing any procedure on the unit make sure that there is no voltage

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1 2
34
MAINTENANCE AND CLEANING OF HEAT EXCHANGER
5
ATTENTION! Handle the heat exchanger carefully to avoid accidents. It is strongly recommended
the use of gloves and glasses
This operation must be performed ONLY BY QUALIFIED STAFF
PPE: Personal Protective Equipment
CAUTION: Before performing any procedure on the unit
make sure that there is no voltage

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REMOTE PANEL
MAIN WINDOW
The touch-screen control panel has been designed to control Controlled Mechanical Ventilation units with Heat Return (VMC-RC) and
Dehumidifier in a simple and intuitive way. The user controls the unit by slightly pressing the graphic display icons; the arrow keys that
appear after pressing a changeable parameter enable the user to interact with the unit by scrolling menu items and changing values.
All changes or selections must be confirmed by pressing save button. When an icon is pressed, its color turns green and the relevant
parameter can be changed. When an item in a submenu is highlighted, it looks white on a black background: if modify parameters is
pressed, the writing turns green and changes can be made using the arrow keys. By the return icon it is possible to come back to the
previous screen, by the home icon to the main screen.
Home button Button modify parameters
Save button Various button

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Main screen : Unit without by-pass
Changing fan speed as a percentage
Main screen : Unit with by-pass
The main window is a detailed graphic representation of the machine status, from which all available functions can be activated. Press
the menu window change icon to change window and access the other menus. The control enters a stand-by mode (the screen goes
off) after one minute of inactivity. When any point of the screen is touched, the display restarts automatically. In case of alarms, instead,
the display lights up for about half a second every ten seconds.
If desired, it is possible to enable a simplified display of the main screen (see par. Air unit) :
In the simplified, the synoptic is replaced by a series of more commonly used icons: speed change (1-2-3), on-off, enabling of operation
via Timer, enabling of operation via external sensors (air quality, humidity). This last function is only available if the foreseen devices are
installed. When pressed, the relative icon changes color indicating the choice made, the color assumed depends on the status of the
machine: green if it is working in VMC, red in heating, blue in cooling.
Fan Speed Control
Through this parameter is possible to manage fans settings. In order to change it, press the top left icon in the synoptic display to select
it (it will turn green and the arrow keys will appear). Then, press the up arrow key icon to increase or the down arrow key to reduce the
value on its side; once the desired value is found, press save to confirm your selection. At first is possible turn off the unit directly by
pressing the center button, it automatically disappears by pressing the arrow keys.

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In detail, the possible options are as follows:
- off: fans are motionless with this option, but watch out that the unit is live anyway; this value is achieved by going below the minimum
speed value that can be set;
- xxx%: if the unit is equipped with continuously variable speed fans, a fan speed percentage, value can be set starting from the
minimum value (factory setting) up to 100% of the available speed with 5% steps (1% on request);
-timer: with this option, the fan speed is controlled according to the weekly schedule (see Program menu). This value is achieved by
selecting a greater value than the maximum speed (100% or 3);
- auto: this option is only available when a sensor (CO2, CO2-VOC or RH relative humidity) is available on whose measure depends the
fan speed. If an external signal (0-10V) is used to control the fan speed, this value is obtained by selecting a greater value than clock.
After you select the function, a digital chronometer is displayed (hours.minutes.seconds), which is preset on a 10 minute value. This value
can be changed by means of the arrow keys on the right side of the screen: up to increase the booster time and down to reduce that
time. After selecting the desired time, press save to start the functionality: the display shows the remaining time to the end of the proce-
dure. When the 00.00.00 value is reached, fans return to be controlled in the previously selected way. When you want to stop the proce-
dure, just repeat the booster setting operations and select a 0-minute time and press save.
Integration-Set point temperature
The control can run an air post-treatment system with a water coil . The temperature set-point is given by the thermometer icon (located
at the bottom right of the screen like images next paragraph). When the bottom icon is selected, the desired interior temperature
set-point (Ts) function is accessed: the user can increase the Ts value by the up arrow key or, vice versa, reduce it by the down arrow
key. With the central button, which appears at first, is possible to deactivate the set-point (and so treatment air). Once the desired value
is achieved, the selection is confirmed by pressing save. Ts can take values between 5.0°C and 30.0 °C with 0.2°C steps. The orange
colour indicates heating, blue indicates cooling:
Booster Function
The booster function is accessed when the bottom left icon is selected; a time period (from minimum 1 minute to maximum 4 hours) can
be selected, in which the unit can run at the maximum power. The booster function has the priority over any other fan speed control
method.
Booster
Change of temperature set-point

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Pre-heating Control (Optional)
In addition to post-heating, the EVO-PH control can run an electric pre-heating system to prevent the formation of ice in the heat
exchanger. The control starts the anti-frost procedure automatically when the temperature detected by the expelled probe (Tx) drops
below 3°C. The heater is powered at the minimum power, if the Tx temperature keeps dropping, the pre-heater power is increased
step-by-step up to 100% if Tx reaches 1°C. When Tx exceeds 3°C, the procedure stops. The main window shows the preheating status:
the preheating status is displayed in the main window:
Dehumidify Control
The control manages a dehumidification system by enabling the compressor and, during the summer season, by completely opening
the water valve connected to the cooling floor. During the winter season, on the other hand, the hydronic part is excluded to avoid the
passage of hot water in dehumidification. In summer, dehumidification will take precedence over temperature integration, while in
winter integration will take precedence. In both cases the control increase speed fans (set it is in menu Factory) to reach 1 vol.\hour
expected. The humidity set point is given by the relative parameter (see point “Air units”).
Menu Selection Window
The menu window is accessed from the main window by touching the specific icon (window change icon). When the menus are
selected (press the down arrow key up to highlight the desired option and press save to confirm the selection), the various detailed
information of the system is accessed. To return in previous menu press the return button.
Post-heating on Post-heating off
Pre-heating on Pre-heating off
Dehumidify active

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The functions listed here below can be accessed from the menu window:
- Status;
- Alarms;
- Configuration
STATUS MENU: OPERATING STATUS
The functions listed here below can be accessed from the menu window:
- Status;
- Alarms;
- Configuration
STATUS MENU: OPERATING STATUS
The status of the unit can be seen right away and the values of the characterizing parameters are displayed; all parameters can be
scrolled by using the up and down arrow keys.
Menu selection window
Display of the Status menu

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ALARMS MENU: DISPLAY OF THE ALARM STATUS
If the control detects an abnormal status, the latter is indicated in the main control screen by a specific flashing icon and a red writing
at the top of the screen (Call service o DirtyFilters). If the alarm is detected when the screen is in stand-by mode, the display flashes at
about 10-second intervals.
If an alarm is being signaled, you can reach the specific menu directly by touching the screen. Otherwise you must select the Alarms
item in the menu selection page and press OK. If the control is interlocked to several units (master/slave mode), you must select the unit
you want to monitor (see Status menu), otherwise you direct access to the detail alarms page.
Signaling an alarm

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