Innova HRP DOMO EXT User manual

INSTALLATION, USE AND MAINTENANCE MANUAL
HIGH-EFFICIENCY HEAT RECOVERY UNIT
HRP DOMO EXT

Innova S.r.l.
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HRP DOMO EXT Manual
TABLE OF CONTENTS
1GENERAL INFORMATION .................................................................................................................................................................. 4
1.1 INTRODUCTION ....................................................................................................................................................................... 4
1.2 BASIC SAFETY RULES................................................................................................................................................................ 4
1.3 SYMBOLS ................................................................................................................................................................................. 5
1.4 WARNINGS .............................................................................................................................................................................. 5
1.5 COMPLIANCE ........................................................................................................................................................................... 6
1.6 RANGE ..................................................................................................................................................................................... 6
1.7 IDENTIFICATION....................................................................................................................................................................... 6
1.8 CONSTRUCTION CHARACTERISTICS......................................................................................................................................... 7
1.9 START-UP REQUIREMENTS .................................................................................................................................................... 8
1.10 DISMANTLING AND DISPOSAL ............................................................................................................................................... 8
2VS MODEL INSTALLATION ................................................................................................................................................................. 9
2.1 CONDITIONS OF INSTALLATION ............................................................................................................................................ 9
2.2 POSITIONING THE UNIT ......................................................................................................................................................... 9
2.3 CONDENSATE DRAIN CONNECTION .................................................................................................................................... 12
3AIR DUCT CONNECTIONS ................................................................................................................................................................ 13
3.1 AIR DUCT GUIDELINES ......................................................................................................................................................... 13
4ELECTRICAL CONNECTIONS............................................................................................................................................................. 14
4.1 GENERAL INFORMATION ..................................................................................................................................................... 14
4.2 UNIT WIRING DIAGRAM ........................................................................................................................................................ 15
4.3 ELECTRICAL CONNECTIONS VERSION -I- ............................................................................................................................ 16
5COMMISSIONING AND OPERATION................................................................................................................................................ 20
5.1 GENERAL INFORMATION ..................................................................................................................................................... 20
5.2 -I- VERSION OPERATION ........................................................................................................................................................ 20
5.3 SWITCHING THE UNIT ON AND OFF ...................................................................................................................................... 21
5.4 MODIFYING FAN SPEEDS AND BOOSTER FUNCTION............................................................................................................. 21
5.5 NOMINAL SPEED OPERATION ........................................................................................................................................... 21
5.6 CHANGING THE SEASON........................................................................................................................................................ 21

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5.7 BUTTON LOCK........................................................................................................................................................................ 22
5.8 PANEL BRIGHTNESS ADJUSTMENT ........................................................................................................................................ 22
6MAINTENANCE................................................................................................................................................................................ 23
6.1 CLEANING AND FILTER REPLACEMENT.................................................................................................................................. 23
6.2 GENERAL CLEANING OF THE UNIT AND CLEANING OF THE HEAT EXCHANGER AND FRAMEWORK..................................... 23
7ALARMS........................................................................................................................................................................................... 24
7.1 GENERAL INFORMATION ....................................................................................................................................................... 24
7.2 TROUBLESHOOTING WITH NO DISPLAY ERROR .................................................................................................................... 24
7.3 TABLE OF ALARMS INDICATED ON DISPLAY - VERSIONS I - ................................................................................................... 25
8NOTES AND MAINTENANCE INFORMATION................................................................................................................................... 26
NOTES ................................................................................................................................................................................................. 26

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1GENERAL INFORMATION
1.1 INTRODUCTION
This manual has been drafted with the aim of making the installation and management of your system as simple as possible.
By reading and taking note of the suggestions in this manual, you will obtain the best performance of the purchased product.
We would like to thank you for choosing to purchase our product.
Please read this manual carefully before carrying out any procedures on the unit.
The unit should not be installed or any work carried out on it until the manual has been read and understood in its entirety. In
particular, all precautions outlined in the manual should be undertaken.
The documentation accompanying the unit must be consigned to the person responsible for the system to be stored carefully (at
least 10 years) for any future assistance, maintenance or repairs.
Installation of the unit must take into account both the purely technical requirements for proper operation and any local legislation in
force and specific requirements.
Ensure that when the unit is delivered, there are no obvious signs of damage caused by transportation. If this should occur, indicate
it on the delivery note.
This user manual reflects the state of the art at the time of marketing and cannot be considered insufficient only because it is
subsequently updated on the basis of additional information. The Manufacturer reserves the right to update manufacturing processes
and manuals, with no obligation to update any priors, except in exceptional circumstances.
Contact the Manufacturer's Sales Office to receive further information or updates regarding technical documentation and for any
suggestions to improve this manual. All communication received will be thoroughly examined.
1.2 BASIC SAFETY RULES
We remind you that products that use electricity and water involve the observance of certain basic safety rules:
•Use of the appliance by disabled or unassisted persons is prohibited
•Touching the appliance barefoot or with wet or damp body parts is prohibited
•Carrying out any cleaning without disconnecting the appliance from the mains power supply by setting the main switch of
the system to off is prohibited
•Modifying safety or adjustment devices without prior authorisation or instructions of the manufacturer of the appliance is
prohibited
•Pulling, disconnecting, or twisting the electrical cables that come out of the appliance, even if disconnected from the power
supply, is prohibited.
•Inserting objects or substances through the intake or delivery grilles is prohibited.
•Opening the access doors to the internal sections of the appliance without first setting the main switch of the system to off
is prohibited.
•Dispersing or leaving packaging material within the reach of children is prohibited, as this may be a potential hazard.
•Observe safety distances between the machine and other equipment or structures to ensure sufficient access space to the
unit for maintenance and servicing as indicated in this booklet.
•Power supply to the unit must include electrical cables of suitable cross section commensurate with the power rating of the
unit. Voltages and frequencies must correspond to those indicated for the respective machinery; all machinery must be
earthed according to the regulations in force in the various countries.

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1.3 SYMBOLS
The symbols shown in the following documentation allow rapid provision of information required to use the unit correctly.
Safety symbols
CAUTION
Authorised personnel only Notification that the procedures indicated are important for safe machine operation
HAZARD
Electric shock risk Notification that there is a risk of electric shock if instructions are not observed.
HAZARD Notification that failure to comply with the requirements entails a risk of harm to exposed
persons.
WARNING Notification that failure to comply with the requirements carries a risk of damage to the
unit or system.
HAZARD Notification that there are moving parts and involves a risk of harm to exposed persons
1.4 WARNINGS
Installation of the unit must be carried out by qualified and trained personnel according to the regulations in force in the
various countries. If installation is not carried out, it may become a potential hazard
Avoid installing the unit in very humid rooms or with large heat sources.
To prevent risk of electric shock on the electrical side, it is essential to disconnect the main switch before carrying out any
electrical connections or maintenance.
In the event of water leakage inside the unit, set the main switch of the system to "Off", shut the water taps and contact
technical support
Use is recommended of a dedicated power supply circuit; never use a power supply in common with other equipment.
Installation of an earth leakage breaker is recommended; failure to install this device may result in electric shock.
To connect, use a cable that spans the entire distance without any connections; do not use extension cords or apply other
loads to the power supply but use a dedicated power supply circuit.
After connecting power cables, ensure that the cables are arranged so as not to exert excessive force on the covers or
electrical panels; incomplete connection of the covers may cause the terminals to overheat.

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Ensure that the earth connection is carried out; do not earth the unit onto distribution tubes.
Momentary high current surges may damage the unit
Installation carried out without conforming to the warnings in this manual or use beyond the operating limits will instantly
void the warranty.
Ensure that commissioning is carried out by personnel authorised by the company (see commissioning request form)
1.5 COMPLIANCE
CE marking (present on all machine) attests to conformity to the following community rules:
•Low Voltage Directive 2014/35/EC
•Electromagnetic Compatibility Directive 2014/30/EC
•Ecodesign 2009/125/EC
1.6 RANGE
-1-
HRP DOMO EXT
20
1) Defines the maximum flow
rate
Models: 20 and 25
X: Enthalpy heat recovery versions
1.7 IDENTIFICATION
-The unit may be identified using the plate on the lower front panel of the unit.
-An additional identification plate with the unit model and shipping references is included on the packaging.
The plate on the packaging has no value regarding the traceability of the product following the sale.
Removal, deterioration or illegibility of the plate on the unit, causes a number of issues regarding identification of the machine,
availability of spare parts and, therefore, any future maintenance.

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1.8 CONSTRUCTION CHARACTERISTICS
HRP DOMO EXT is a ventilation unit that includes a heat recovery system for air exchange with no waste in energy.
The unit is particularly suitable for individual family units, flats and in all cases where nominal air flow rates for air exchange
are no greater than 250 mc/h.
BODY:
VS MODELS (BUILT IN)
Units with self-supporting sheet metal frame
Sandwich panels in double galvanised sheet metal and internal insulation in high density
polystyrene;
Additional external insulation for external installation
internal curtain walls in thick galvanised sheet metal.
Housing frame with 10mm insulation
Integrated supply and return manifold for 6+6 starts Dn75-90mm;
VV MODELS (SURFACE-MOUNTED)
Units with self-supporting sheet metal frame
Sandwich panels in double galvanised sheet metal and internal insulation in high density
polystyrene;
Additional external insulation for external installation
internal curtain walls in thick galvanised sheet metal.
Aesthetic finish covers painted white Ral9003
HEAT EXCHANGER:
Cross-flows polypropylene heat exchanger with high efficiency.
Low freezing temperatures and operation down to -25°C.
Very high exchange efficiency.
FANS:
Brushless fans with an electronic motor and control module.
A very high efficiency and low noise levels.
FILTERS:
ePM1 Filters 80% with low pressure drop.
Easily removable on front side of unit
FREE COOLING:
Free cooling realized inside the unit a wide air passage and damper valve with a motorized actuator.
ELECTRICAL PANEL:
VERSION I
Electrical panel including 4 fan speed control board, frost protection, automatic bypass,
temperature probes, post-heating battery management and automatic dirty filter warning.
Mandatory control panel for the operation of the unit with capacitive touch
for box or wall mounting with integrated Wi-Fi;
ELECTRONIC VERSION AND
Built-in electrical panel with a microprocessor and dedicated regulation.
Modulation fan management, internal machine probe temperature display,
timed dirty filter management, free-cooling management with temperature probes.
Wide graphical interface with a configuration menu and a multilingual user menu.
Possibility of connection to 2 types of keypads: simple (TAL) or advanced (TNF)
EFFICIENCY:
Thanks to its construction particularities and to its components, HRP DOMO is able to achieve a
recovery efficiency of more than 90%.
During winter and summer seasons there is a considerable energy recovery of the renewal air
introduced into the environment.

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1.9 START-UP REQUIREMENTS
Ensure there are no foreign bodies inside the unit before start-up.
Check the fastenings of the closure panels and inspection doors.
If no ducts are installed on one of the 4 aeraulic intakes, ensure that a suitable protective mesh is installed.
Check the power supply and earthing of the unit.
1.10 DISMANTLING AND DISPOSAL
Do not dismantle or dispose of the product yourself. Dismantling, demolition or disposal of the product must be carried out by
authorised personnel in accordance with local regulations.

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2VS MODEL INSTALLATION
2.1 CONDITIONS OF INSTALLATION
The unit must be installed in accordance with national and local regulations that govern the use of electrical equipment and
according to the following instructions:
install the unit inside residential buildings with a room temperature between 0°C and 45°C;
avoid areas close to sources of heat, steam, flammable and/or explosive gases and particularly dusty areas;
install the unit in a location that is not subject to frost (condensate water must be drained unfrozen, at an angle, using a siphon);
do not install the unit in areas with high relative humidity (such as bathroom or toilet) to prevent condensation on the external
surface;
Choose an installation location where there is sufficient space around the unit for air duct connections and maintenance;
the ceiling/wall/floor where the unit is to be installed must be suitable to bear the weight of the unit and not cause vibration.
The following must be present where the unit is installed:
air duct connections;
230V single-phase electrical connection
connection for condensate drain.
The unit is an integral part of a balanced ventilation system, which extracts contaminated air from kitchens, bathrooms or any other
rooms, and introduces the same volume of fresh air into living rooms or bedrooms. Spaces under doors ensure good airflow
circulation inside the house: ensure that these spaces are never obstructed, for example by draught excluders or carpets, otherwise
the system will not work optimally.
Simultaneous operation of the unit and a natural draught boiler (e.g. open fireplace) may lead to a negative pressure in the room
which could cause flue gases to flow back into the room.
2.2 POSITIONING THE UNIT
VS MODEL – Positioning in the framework
To mount the unit inside the framework, follow the steps
below:
Remove the locking door of the central framework using
the 4 locks;
Remove the upper panel grille using the 4 securing
screws;
Framework cover removal

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To mount the unit in the framework, disassemble the
partition on the exhaust side using the 4 threaded screws;
If the partition has been disassembled in preparation for
reassembly of the fresh air and exhaust tubes to the
outside of the framework, proceed to the next step;
Exhaust partition disassembly for unit assembly
Position the unit on the upper bracket, moving the unit
upwards and matching the two lower sleeves with the
tubes supplied in the framework;
Mounting in framework with bracket
Position the unit on the rear bracket and check the
connection of the lower sleeves with the tubes supplied
with the framework;
Secure the unit using the bottom bracket on the bottom
wall using the supplied screw;
Mounting in framework with bracket

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If exhaust and fresh air intake directly on the framework
has been prepared, mount the upper tube with partition
on the exhaust side using the 4 screws supplied;
Exhaust partition assembly for fresh air intakes directly on framework
If fresh air and exhaust tubes outside the framework have
been prepared, connect the final part between the units
and the prepared tubes
Mounting and connection of fresh air and exhaust flexible tubes

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2.3 CONDENSATE DRAIN CONNECTION
Due to the heat recovery system (hot exhaust air is cooled by the incoming air inside the heat exchanger), the humidity contained in
the indoor air condenses inside the unit.
For the heat recovery unit to operate correctly, a condensate drain is, therefore, required to be connected to the plumbing system
(drain) of the house. In addition, to allow the condensate water to flow out correctly and prevent back suction of air, the condensate
drain must always be fitted with a siphon by the installer;
The installation tube must have been prepared when the framework was installed and brought inside the framework;
Provide the connection from the drain outlet of the unit at the bottom to the tube provided;
Comply with the following standards regarding installation of the condensate drain:
•create an angle of at least 2% to the drain tube;
•allow for the disconnection of the drain tube for maintenance purposes
•ensure that the end of the drain tube is below the siphon water level;
•ensure the siphon is always full of water.
Install the condensate drain siphon on the exhaust side of the unit to prevent unpleasant odours in room air.

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3AIR DUCT CONNECTIONS
3.1 AIR DUCT GUIDELINES
The unit is equipped with 4 circular male connections of different Ø depending on the size: for optimal operation.
Refer to the following diagram and the stickers on the unit to connect the air ducts.
Table of aeraulic connection diameters
Size
20
25
Ø mm
160
160
We recommend a tube installation of at least 200mm to prevent vibration entrainment and unpleasant noise as a result of the
installation.
The four aeraulic connections may be oriented depending on the system in which the unit is to be installed.
The configurations are shown below:
FITTING CONFIGURATIONS
Installation with exhaust and fresh air to be ducted externally Installation with exhaust and fresh air directly on the
framework
The units are shown as seen from the front

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4ELECTRICAL CONNECTIONS
4.1 GENERAL INFORMATION
-Before carrying out any electrical connections, ensure that the unit is not electrically powered
-Carry out electrical connections by consulting only the wiring diagram in the annex of this manual.
-Install a circuit breaker and leak protection device for the exclusive use of the unit.
-It is essential that the unit is earthed effectively. The manufacturer declines all responsibility for this
precaution.
-Check that the electrical components chosen for the installation (main switch, thermal-magnetic circuit breakers, cable cross
sections and terminals) are rated for
the electrical power of the installed unit and that they take into account compressor inrush currents, as well as the maximum load
that can be achieved. The
relevant data are indicated in the annexed wiring diagram and on the unit identification plate
-The insertion of electric cables into the unit is prohibited unless specified in this documentation.
-Use electrical cables and conductors of appropriate cross sections and in compliance with the regulations in force in the various
countries.
-Do not allow electrical cables to be in direct contact with tubes or components inside the unit
-Check the tightening torques of the power supply terminal screws following the first few moments of operation
Table for the sizing of the power supply line
Size
20
25
Maximum current
consumption
A 1.1 1.6
ELECTRICAL CONNECTION POSITIONING
Electrical connection:
Two holes are provided at the bottom of the unit
structure;
The control board and the terminals can be reached
through the panel with the 4 dedicated screws that
need to be removed;
The framework includes holes for electrical
connections if the installation is in the framework;
Electrical connection positioning

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4.2 UNIT WIRING DIAGRAM
Version I
CONNECTIONS TO BE MADE BY THE CUSTOMER
GRID
Humidistat / Air quality regulator
Contact closed / function enabled
CHILLER Chiller / Generator activation Potential-free Contact
(Hot/cold activation request)
N – CL – CP
Water / battery valve
Contact voltage (220V)
REMOTE DISPLAY
Remote control (4-core)

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ON OFF REMOTE (ON DISPLAY)
ON OFF remote contact present on remote display
Contact closed / unit OFF
4.3 ELECTRICAL CONNECTIONS VERSION -I-
EDA649, EDB649, EWG649, EWW649 remote panel connection
The board version -I-, includes a
capacitive Touch remote control for the
management of all the functions of the
unit and is fitted for wall or external box
502 installation;
Use shielded/braided 0.75/1 mm cable
with 4 conductors for the connection;
Remote panel EDA649, EDB649, EWG649, EWWW649
Auxiliary Connections
The board allows for the operation of a EC Brushless fan via remote control as described above;
Some auxiliary functions have been implemented on the board such as the connection of regulators and management of a battery /
valve;

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DISPLAY CONNECTION FOR MULTIPLE UNIT CONTROL
The EDA649, EDB649, EWG649,
EWW649 panel provides the control of
several units; up to 30 units can be
connected that are managed by a single
remote panel;
They are to be connected in series with
in and out connection on the boards of
the single units;
The network is an RS485 network; Use
2-core shielded cable with maximum
length of 150m;
-Thread so as to minimise branch
lengths;
-
terminate the line with the supplied 120
Ω resistor;
- do not use "star" connections; - the
connection with RS485 cable is
polarised,
REMOTE ON OFF CONNECTION
The EDA649, EDB649, EWG649,
EWW649 remote panel provides ON OFF
control with which the unit can be
connected via a potential-free contact to
a remote on/off device such as a switch
or timer
The logic is the following:
Contact closed: Unit OFF
Contact open: Unit ON

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CONNECTION OF CIRCUIT BOARD FOR SQA AIR QUALITY REGULATOR
A digital air quality regulator connection
is required.
There are three levels of air quality on
the regulator:
-Low / Medium / High.
Select the desired comfort level using
the Jumper on the regulator.
The connection is effected via the GRID
terminals
as shown in the wiring diagram
N.B.: Include a 230V relay between the
output
of the regulator and the unit input.
Air Quality Regulator Connection
CONNECTION OF CIRCUIT BOARD FOR UMR HUMIDITY REGULATOR
A room humidity regulator is required.
The regulator requires a control knob
which will enable the desired humidity
level to be selected.
The connection is effected via the GRID
terminals
as shown in the wiring diagram
Humidity Regulator Connection
N.B. Both the air quality regulator and the humidity regulator may be connected in parallel on the same terminals;

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VALVE / BATTERY CONNECTION
The unit includes the control of
valve/battery via the 230V control
provided on the board;
•N - COMMON
•CL - FIXED VOLTAGE FOR 3-
POINT VALVE CONTROL
•CP - ON OFF 2-3 POINT VALVE
CONTROL
Water / Battery Valve Connection
GENERATOR / BATTERY CONNECTION
The unit includes control of a generator
or a battery via the potential-free
contact on the terminal block;
Closed contact with active request;
Generator / Battery Connection

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5COMMISSIONING AND OPERATION
5.1 GENERAL INFORMATION
In order to ensure moisture “drain” that is naturally created inside a house, the unit must operate continuously at least at reduced
speed (speed 1). If the ventilation unit is switched off, condensation inside the unit and inside the building may occur with possible
damage due to moisture.
Commissioning of the unit and any changes to the factory settings may only be carried out by qualified personnel (authorised
installer).
5.2 -I- VERSION OPERATION
The unit is fully controlled manually by
the user via the EDA649, EDB649,
EWG649, EWW649 wall-mounted touch
control;
the humidity regulator and air quality
regulator sensors may be connected;
3V Switching module
The buttons on the main screen are
shown here:
Buttons on the main display:
Allows switching the unit
on/off using the keypad
Button to set temperature
Buttons to select
ventilation speed:
Silent / nominal /
maximum
Button to select summer / winter
Button for nominal speed
and sensor operation
ALARM warning
Main screen button display