Innova HRN+ Service manual

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INSTALLATION, USE AND MAINTENANCE MANUAL
HIGH EFFICIENCY HEAT RECOVERY UNIT

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INDEX
1GENERALITY ..................................................................................................................................................................4
INTRODUCTION.....................................................................................................................................................4
BASIC SAFETY RULES ................................................................................................................................4
SYMBOLOGY .........................................................................................................................................................5
WARNINGS ............................................................................................................................................................5
COMPLIANCE ........................................................................................................................................................6
RANGE ...................................................................................................................................................................6
IDENTIFICATION ............................................................................................................................................6
CONSTRUCTION FEATURES...............................................................................................................................7
MAIN COMPONENTS OF THE UNIT.....................................................................................................................8
PACKING AND TRANSPORT ............................................................................................................................8
RECEPTION, CONTROL AND HANDLING ..............................................................................................8
DISASSEMBLY AND DISPOSAL ..............................................................................................................8
2INSTALLATION ...............................................................................................................................................................9
2.1 INSTALLATION CONDITIONS .....................................................................................................................9
2.2 UNIT PLACEMENT ......................................................................................................................................9
2.3 ANCHOR BRACKETS ............................................................................................................................10
2.4 CONDENSATE DRAIN CONNECTION .....................................................................................................10
3AREA CONNECTIONS .................................................................................................................................................11
3.1 VENTILATION CONNECTIONS ................................................................................................................11
3.2 CONFIGURATIONS AND MODIFICATION OF AERAULIC GUIDELINES .........................................................11
4ELECTRICAL CONNECTIONS.....................................................................................................................................13

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4.1 GENERALITY .............................................................................................................................................13
4.2 ELECTRICAL CONNECTIONS VERSION -I- ............................................................................................20
4.3 ELECTRICAL CONNECTIONS -S VERSION .........................................................................................................23
4.4 ELECTRIC BATTERIES ..............................................................................................................................24
4.5 HYDRONIC BATTERIES .............................................................................................................................25
5COMMISSIONING AND METHOD OF USE .................................................................................................................25
5.1 GENERALITY .............................................................................................................................................25
5.1.1 VERSION OPERATION -I- ...............................................................................................................................25
5.1.2 TURNING THE UNIT ON AND OFF.................................................................................................................26
5.1.3 CHANGE FAN SPEED AND BOOSTER FUNCTION ......................................................................................26
5.1.4 NOMINAL SPEED FUNCTION.........................................................................................................................26
5.1.5 SEASON CHANGE...........................................................................................................................................26
5.1.6 KEY LOCK ........................................................................................................................................................27
5.1.7 PANEL BRIGHTNESS ADJUSTMENT.............................................................................................................27
5.2 ACCESSORIES - ..................................................................................................................................................27
6MAINTENANCE.............................................................................................................................................................29
6.1 CLEANING OR REPLACING FILTERS ...............................................................................................................29
6.2 CLEANING THE HEAT EXCHANGER .......................................................................................................30
6.3 GENERAL CLEANING OF THE UNIT ........................................................................................................30
7ALARMS ........................................................................................................................................................................31
7.1 GENERALITY .......................................................................................................................................................31
7.2 TABLE OF ALARMS INDICATED BY THE DISPLAY - VERSIONS I -................................................................31
8NOTES AND MAINTENANCE INFORMATION ............................................................................................................32
NOTE .............................................................................................................................................................................32

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1 GENERALITY
INTRODUCTION
This manual was conceived with the aim of making installation and management of your system as simple as possible.
By reading and applying the suggestions in this manual, you will be able to obtain the best performance from the purchased product.
We would like to thank you for the choice you made by purchasing our product.
Read this booklet carefully before carrying out any operation on the unit.
The unit must not be installed or performed on it in any way unless this manual has been carefully read and understood in all its parts. In particular, all
the precautions listed in the manual must be taken.
The documentation supplied with the unit must be handed over to the system manager so that he can keep it carefully (at least 10 years) for any future
assistance, maintenance and repairs.
The installation of the unit must take into account both the purely technical requirements for correct operation and any local legislation
in force and specific provisions.
Make sure that when the unit is delivered, there are no obvious signs of transport damage. In this case, indicate it on the delivery note.
This manual reflects the state of the art at the time the machine was marketed and cannot be considered inadequate because it is subsequently
updated on the basis of new experiences. The Manufacturer reserves the right to update the production and the manuals, without the obligation to
update the previous ones, except in exceptional cases.
Contact the Manufacturer's Sales Department to receive further information or updates to the technical documentation and for any improvement
proposal to this manual. All reports received will be rigorously screened.
BASIC SAFETY RULES
We remind you that the use of products that use electricity and water implies the observance of some fundamental safety rules:
•Use of the appliance by disabled and unassisted persons is prohibited
•It is forbidden to touch the appliance with bare feet and with wet or damp parts of the body
•Any cleaning operation is prohibited before having disconnected the appliance from the mains power supply by setting the main system switch
to off
•It is forbidden to modify the safety or adjustment devices without the authorization and indications of the appliance manufacturer
•It is forbidden to pull, disconnect or twist the electric cables coming out of the appliance, even if this is disconnected from the mains power
supply.
•It is forbidden to introduce objects and substances through the air intake and delivery grilles.
•It is forbidden to open the access doors to the internal parts of the appliance without having first turned the main switch of the system to off.
•It is forbidden to disperse and leave the packaging material within the reach of children as it can be a potential source of danger.
•Respect the safety distances between the machine and other equipment or structures to guarantee sufficient access space to the unit for
maintenance and assistance operations as indicated in this booklet.
•The power supply of the unit must take place with electric cables having a section suitable for the power of the unit. The voltage and
frequency values must correspond to those indicated for the respective machines; all machines must be earthed as per current legislation in
the various countries.
•Do not release R134A into the atmosphere: R134A is a fluorinated greenhouse gas, referred to in the Kyoto protocol, with a global warming
potential (GWP)=1975.

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SYMBOLOGY
The symbols shown in the following file allow you to quickly provide the information necessary for correct use of the unit.
Safety related symbols
ATTENTION
Authorized personnel only Warns that the operations indicated are important for the safe operation of the machines
DANGER
Risk of electric shock Warns that failure to observe the instructions involves a risk of electric shock.
DANGER Warns that failure to observe the instructions involves a risk of harm to exposed persons.
WARNING It warns that failure to observe the instructions involves a risk of damage to the unit or the system.
DANGER Warns that there is the presence of moving parts and involves a risk of harm to exposed people
WARNINGS
The installation of the unit must be carried out by qualified and authorized personnel according to the regulations in force in the various
countries.
If the installation is not performed it could become a dangerous situation
Avoid installing the unit in very humid rooms or with the presence of large heat sources.
On the electrical side, to prevent any risk of electrocution, it is essential to disconnect the main switch before carrying out any operations
electrical connections and any maintenance operation.
In the event of water leaks inside the unit, position the main switch of the system to "Off", close the taps of the
water and contact the technical service
It is recommended to use a dedicated power circuit; Never use a power supply in common with other appliances.
It is recommended to install an earth leakage breaker; failure to install this device may result in shock
electric.

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For the connection, use a cable long enough to cover the entire distance, without any connection; do not use
extension cords and do not apply other loads on the power supply but use a dedicated power circuit.
After connecting the electric cables, make sure that the cables are arranged so as not to exert excessive forces on the covers or on the
electrical panels; any incomplete connection of the covers may cause overheating of the terminals.
Make sure that the earth connection is made; do not earth the appliance on distribution pipes.
High intensity surge currents could damage the unit
Installations carried out outside the warnings of this manual or use outside the operating limits will invalidate
the guarantee instantly.
Make sure that the first start-up is carried out by personnel authorized by the company (see first start-up request form)
COMPLIANCE
The CE marking (present on each machine) certifies compliance with the following EU standards:
•Machinery Directive 2006/42/EC
•Low Voltage Directive 2014/35/EC
•Electromagnetic Compatibility Directive 2014/30/EC
•RoHS2 2011/65/EU
•WEEE 2012/19/EC
RANGE
-1-
-2-
HRN+
40
I
1) Defines the maximum range
Models from: 400 m³/h to 4500 m³/h
2) Electronic version
I: Electronics I
S: Without Electronics
IDENTIFICATION
-The unit can be identified by the plate placed on the lower front panel of the same.
- On the packaging there will be an additional identification plate with the unit model and shipping references.
-The plate on the packaging has no value for the traceability of the product in the years following the sale.
The removal, deterioration and illegibility of the plate placed on the unit, entails major problems in identifying the machine, in finding spare parts and
therefore in any future maintenance.

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CONSTRUCTION FEATURES
CONSTRUCTION CHARACTERISTICS
HRN+ is a ventilation unit complete with heat recovery unit dedicated to air exchange without wasting energy.
The unit is particularly suitable for commercial premises or collective residential buildings and in all cases where the nominal air exchange flow rates
are not higher than 4500 m³/h.
STRUCTURE:
Supporting structure in self-supporting sheet metal, with perimeter sealing gasket.
Sandwich panels in galvanized sheet thickness 25 mm,
insulated in polyurethane foam with a density of 42 kg/m3.
Carpentry and internal infill panels in thick galvanized sheet metal.
HEAT EXCHANGER:
Cross flow aluminum heat exchanger (80% Erp 2018).
Summer and winter operation.
SUMMER BYPASS:
Summer bypass with motorized damper installed.
FANS:
Brushless fans with electronic motor and modulating control.
Very high efficiency and low noise levels ErP2018
FILTERS:
Filters with low efficiency pressure drop
ePM 1 - 70 % (F7) on fresh air
ePM 10 - 50 % (M5) on extract air.
Easy to extract for ordinary maintenance, extraction side according to configuration and drawings
AVAILABILITY AND VERSIONS
5 models with horizontal or vertical development
For all configurations it is possible to modify the orientation of the outlets on site (further details in the
data sheet and technical drawings).
Three versions of S/I control
S VERSION
Simple electrical preparation for quick connection of the unit to the mains.
VERSION I
Electrical panel complete with card for managing 3 fan speeds, antifreeze and automatic free-cooling
control. Control via digital contacts.
Each version is completed by a dedicated command, an accessory on request
HRN+ units are suitable for indoor, ceiling or floor installation
and outdoor installation with canopy (additional accessory).
For the HRN+ units there are electric coils (external to the structure) and modules with heating or
cooling coil (water supply fluid).
Other accessories and possible adjustments according to the technical data sheet and price list.

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MAIN COMPONENTS OF THE UNIT
1. Fan
2. Heat exchanger
3. Exchanger bypass system
4. Air filters
PACKING AND TRANSPORT
The units are supplied for transport fixed on a wooden pallet and inserted in cardboard boxes. To facilitate movement, the units are equipped with a
wooden pallet and hooks on the base which allow them to be lifted and positioned on the installation site. The unit can be stored in a place protected
from atmospheric agents with temperatures not lower than 0°C, up to a maximum of 40°C.
RECEPTION, CONTROL AND HANDLING
The unit is shipped completely pre-charged with refrigerant gas in the circuits and with non-freezing oil in the compressors. Under no circumstances can
water be present in the hydraulic circuits, since after testing the unit is carefully emptied. Upon arrival, the customer is required to inspect the unit also in
the internal areas to verify that it has not been damaged during transport; the unit left the factory in perfect condition. Otherwise, it is necessary to take
immediate recourse against the carrier, reporting the extent of the damage in detail on the document, producing photographic evidence of the apparent
damage and notifying any apparent damage to the shipper by registered mail. The manufacturer assumes no responsibility for damage due to transport,
even in if he did the shipping himself.
Great care must be taken in handling the units during unloading and positioning on site, in order to avoid damage to the casing and to the more delicate
internal components such as compressors, exchangers, etc. In any case, keep the unit horizontal without tilting it. All the indications regarding the
precautions necessary to ensure that no damage is done to the unit and the indication of the weight of the same are shown on the packaging. The
materials that make up the packaging can be of various kinds such as wood, cardboard or polyethylene (plastic). It is good practice to send them for
disposal or recycling through specialized companies to reduce their environmental impact.
DISASSEMBLY AND DISPOSAL
Do not disassemble or dispose of the product yourself. The disassembly, demolition, disposal of the product must be carried out by authorized
personnel in accordance with local regulations.

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2 INSTALLATION
2.1 INSTALLATION CONDITIONS
The unit must be installed according to the national and local regulations governing the use of electrical devices and according to the following
indications:
•install the unit inside residential buildings with an ambient temperature between 0°C and 45°C;
•avoid areas near sources of heat, steam, flammable and/or explosive gases and particularly dusty areas;
•install the unit in a place not subject to frost (the condensed water must be discharged not frozen, at a certain angle, using a siphon);
•do not install the unit in areas with a high relative humidity (such as the bathroom or toilet) to avoid condensation on the external surface;
•choose an installation site where there is sufficient space around the unit for the connections of the air ducts and to be able to carry out
maintenance operations;
•the consistency of the ceiling/wall/floor where the unit will be installed must be suitable for the weight of the unit and not cause vibrations.
In the environment chosen for installation there must be:
- air duct connections;
- 230 V single-phase electrical connection
- connection for the condensate drain
- hydraulic connection
2.2 UNIT PLACEMENT
Ceiling Mount - H Unit
To mount the unit on the ceiling you will need:
-install the condensate drain kit on the front wall of the unit
(cover): remove the caps, insert the threaded pipe from the
inside and screw the siphon on the outside;
-fix the unit to the ceiling, using the brackets already installed on
the unit and using suitable anchoring systems (dowels,
threaded bars, chains…) and check its leveling using a spirit
level.
Ensure sufficient space for carrying out maintenance activities: the
opening of the cover of the unit (from below) must be guaranteed.
Do not mount the unit with the sides in direct contact with the walls
to avoid possible contact noise, insert rubber or neoprene strips in
this case.
Wall Mount - V Unit
To mount the unit on the wall you will need:
-install the condensate drain kit on the back panel: remove the
caps, insert the internal connection pipe and screw the siphon
on the outside;
-Lay the unit on the floor
-position the 4 mounting brackets on the rear side of the unit only
if there is a need for wall anchoring and fix them with the screws
supplied after having drilled the holes (the holes must be made
on the aluminum frame);

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Ensure sufficient space for carrying out maintenance activities: the
opening of the front panel of the unit must be guaranteed.
Do not mount the unit with the sides in direct contact with the walls
to avoid possible contact noise, insert rubber or neoprene strips in
this case.
2.3 ANCHOR BRACKETS
The brackets are already mounted on the unit on
the bottom four corners.
They are designed for fixing with dowels and
threaded rods
2.4 CONDENSATE DRAIN CONNECTION
Due to the heat recovery system (the hot exhaust air is cooled by the intake air inside the heat exchanger), the humidity contained in the indoor air
condenses inside the unit.
For the correct functioning of the heat recovery unit, it is therefore necessary to connect a condensate drain to the plumbing system (drain) of the house.
Furthermore, to allow the correct outflow of the condensate water and avoid air suction, the condensate drain must always be equipped with the special
siphon supplied.
For the installation of the condensate drain, comply with the following standards:
-give the drain pipe a slope of at least 2%;
-provide for the possibility of disconnecting the drain pipe for any maintenance (particularly in the case of ceiling installation);
-make sure that the discharge end of the hose is at least below the water level of the siphon;
-make sure that the siphon is always full of water.
Install the supplied condensate drain siphon to avoid unpleasant odors in the ambient air

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3 AREA CONNECTIONS
3.1 VENTILATION CONNECTIONS
The unit is equipped with 4 male circular connections of different Ø according to the size: for optimal operation.
For the correct connection of the air ducts, refer to the following diagram and the stickers placed on the unit.
Table of unit aeraulic connection diameters
MODEL
hrn
extensi
on
40 70 100 150 200 250 350 450
Diameter DN OR 200 315 315 355 400 400 500 500
3.2 CONFIGURATIONS AND MODIFICATION OF AERAULIC GUIDELINES
Depending on the system in which the unit is to be installed, it will be possible to suitably orient the four aeraulic connections.
Here are the possible configurations:
The air connections can be configured during installation through the removable panels.
However, it is possible to have the unit already with the desired configuration.
When ordering, in addition to the unit code, the desired connection configuration must
also be specified (eg.URHRN000- H4)

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HORIZONTAL VERSION
H1 (AB) H2 (AB) H3 (AB) H4 (AB)
H5 (AB) H6 (AB) H7 (AB) H8 (AB)
VERTICAL VERSION V
V1 (AB) V2 (AB) V3 (AB) V4 (AB)
The units are shown in top view (H version) and front view (V version)
Without the indication of a configuration, the standard position of the four aeraulic connections in the horizontal version is marked by the abbreviation H5
while for the vertical version the standard position is marked by the abbreviation V1.
It is possible to have a further choice of configuration, depending on the positioning of the condensate drain trap which will determine the expulsion side
of the unit.
This operation is performed during installation and will therefore determine the final configuration of the unit.
-Configuration A: fresh air = red arrows stale air expulsion = blue arrows
(condensate siphon installed on fan side blue arrow)
-Configuration B: fresh air = Blue arrows stale air expulsion = red arrows.
(condensate siphon installed on fan side red arrow)

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4 ELECTRICAL CONNECTIONS
4.1 GENERALITY
-Before starting any operation to make the electrical connections, make sure that the unit is not electrically powered
-Make the necessary electrical connections by consulting only the electrical diagram attached to this manual.
- Install a suitable interrupting and differential protection device for the exclusive service of the unit.
-It is essential that the unit is connected to an earth socket.
- Check that the electrical components chosen for installation (main switch, circuit breakers, cable section and terminals) are suitable for the electrical
power of the installed unit and that they take into account the compressor peak currents as well as the maximum load that can be reached. The relative
data are indicated on the attached wiring diagram and on the unit identification plate
-It is forbidden to enter the unit with electric cables except where specified in this booklet.
-Use cables and electrical conductors with adequate sections and compliant with the regulations in force in the various countries.
-Absolutely avoid running the electrical cables in direct contact with pipes or components inside the unit
-Check the tightening of the screws of the power supply terminals after the first moments of operation
Power line sizing table
Electrical data
Size HRN+40 HRN+70 HRN+100 HRN+150 HRN+200 HRN+250 HRN+350 HRN+450
Supply voltage 230V / 1 / 50Hz
400V / 3+N / 50Hz
Max absorbed power
w
2 X 100
2 x 145
2 x 305
2 x 305
2 x 305
2 x 990
2 x 990
2X1100
Max absorbed current
1.6
2.4
2.8
2.8
2.8
3.4
3.4
3.6
Degree of protection unit IP20 IP20 IP20 IP20 IP20 IP20 IP20 IP20

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Version I - SINGLE-PHASE SCHEME 230 V

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Version I - 230V SINGLE-PHASE TERMINAL BOARD
LINKS PROVIDED BY THE CUSTOMER
GRID (directly on board)
Humidistat / Air quality regulator
Contact closed / function active
GENERATOR COMMAND Chiller / Generator Activation Clean Contact
(hot/cold request activation)
N - CL - CP
Water valve / post battery
Live contact (220v)
REMOTE DISPLAY (directly on board)
Remote control (4 wires)
ON OFF REMOTE (ON DISPLAY)
Remote ON OFF contact present on remote display
Contact closed / unit OFF

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Version I - 400V THREE-PHASE SCHEME

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Version I - THREE-PHASE 400V TERMINAL BOARD
LINKS PROVIDED BY THE CUSTOMER
GRID (directly on board)
Humidistat / Air quality regulator
Contact closed / function active
GENERATOR COMMAND Chiller / Generator Activation Clean Contact
(hot/cold request activation)
N - CL - CP
Water valve / post battery
Live contact (220v)
REMOTE DISPLAY (directly on board)
Remote control (4 wires)
ON OFF REMOTE (ON DISPLAY)
Remote ON OFF contact present on remote display
Contact closed / unit OFF

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S VERSION – 230V SINGLE-PHASE TERMINAL BOARD
CONNECTIONS
N/L/PE Power supply 230V/1/50
10v / y / 0v RDV regulator contact or 0-10vdc signal
1 / 2 / 3 By-Pass damper connection

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S VERSION – THREE-PHASE 400V TERMINAL BOARD
CONNECTIONS
R/S/T/PE Power supply 400V/1/50
10v / y / 0v RDV regulator contact or 0-10vdc signal
1 / 2 / 3 By-Pass damper connection

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4.2 ELECTRICAL CONNECTIONS VERSION -I-
CNV remote panel connection
The -I- version card features a capacitive
touch-type remote control for managing all the
unit's functions and is set up for wall-mounting
or external box 502 installation;
For the connection, use a 0.75/1 mm
shielded/braided cable with 4 conductors;
CNV remote panel
Auxiliary Connections
The card allows the operation of the EC Brushless fan through a remote control described above;
Some auxiliary functions have been implemented in the card such as the connection of the regulators and the management of a battery / post valve;