Aspira ASPIRCOMFORT CLASS 620H User manual

INSTALLATION, USE AND MAINTENANCE MANUAL ASPIRCOMFORT CLASS 620H

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1. GENERAL
1.1 INTRODUCTION
This manual was prepared with the aim of making the installation and management of your system as simple as
possible.
By reading and applying the suggestions of this manual, you can achieve the best performance of the purchased
product.
We would like to thank you for choosing to purchase one of our products.
Read this file carefully before performing any operation on the unit.
The unit must not be installed, nor must any operation be performed on it, without firstly reading and understanding
the entirety of this manual. In particular it is necessary to adopt all of the precautions listed in the manual.
The documentation provided with the unit must be delivered to the system manager for safe keeping (at least 10
years) for future assistance, maintenance and repairs.
Unit installation must take into account the strictly technical needs for good operation, as well as any local
legislation in force and specific requirements.
Make sure that when the unit is delivered there are no evident signs of damage caused by transport. If there is,
state this on the delivery note.
This manual reflects the state of the technical standards at the time of sale and cannot be considered inadequate
if updated at a later date based on new experiences. The Manufacturer reserves the right to update production and
the manuals without being required to update previous ones, except in exceptional cases.
Contact the Manufacturer’s Sales Office to receive further information or updates on/to the technical documentation
and for any suggestions for improvement to this manual. All suggestions shall be strictly vetted.
1.2 FUNDAMENTAL SAFETY RULES
Remember that the use of products that use electrical energy and water requires certain fundamental
safety rules to be followed:
• Unable and unassisted persons are forbidden from using the device.
• It is forbidden to touch the device in bare feet and with wet or damp parts of the body.
• Any cleaning activity is forbidden without firstly disconnecting the device from the electrical power mains by
placing the system’s main switch on ‘off’.
• It is forbidden to modify the safety or regulation devices without the authorisation and indications of the
device manufacturer.
• It is forbidden to pull, detach, twist the electrical cables coming out of the device, even if it is disconnected
from the electrical power mains.

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• It is forbidden to insert objects and substances through the air intake and supply grids.
• It is forbidden to open the access doors to the inside of the device, without firstly placing the system’s main
switch on ‘off’.
• It is forbidden to release and leave packaging material within the reach of children as it is a potential source
of danger.
• Comply with the safety distances between the machine and other devices or structures to guarantee enough
access space to the unit for maintenance and assistance operations as stated herein.
• The unit’s power supply must be provided with electrical cables duly sized for the power of the unit. The
voltage and frequency values must match those stated for the respective machines; all machines must be
earthed according to the regulations in force in the various countries.
1.3 SYMBOLS
The symbols used in the following file quickly provide information necessary for the correct use of the unit.
Safety symbols
ATTENTION
Authorised personnel only. This means that the stated operations are important to safe machine
operation.
DANGER
Risk of electric shock. This means that failure to comply with the warnings poses the risk of
electric shock.
DANGER
This means that failure to comply with the warnings poses the risk of injury to the exposed
persons.
WARNING
This means that failure to comply with the warnings poses the risk of damage to the unit or
system.
DANGER
This means that there are moving parts and poses the risk of harm to exposed persons.

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1.4 WARNINGS
The unit must be installed by qualified and authorised personnel according to the rules in force in the
various countries.
If installation is not carried out, this could lead to a situation of danger.
Avoid installing the unit in very damp rooms or where there are large sources of heat.
On the electric side, to prevent any risk of electrocution, it is essential to disconnect the main switch before
setting up the electrical connections and performing any maintenance operation.
If there are any water leaks from inside the unit, place the system’s main switch on ‘Off’, close the water
valves and contact the technical service.
Always use a dedicated power supply circuit; never use a power supply shared with other devices.
Always install an earth leakage circuit-breaker; failure to install this device could cause electric shock.
For the connection, use a sufficiently long cable to cover the entire distance without any connection; do not
use extensions and do not apply other loads on the power supply, rather, always use a dedicated power
supply circuit.
When the electrical cables are connected, make sure that the cables are arranged so that they do not press
excessively on covers or electrical panels; any incomplete connection of the covers may cause overheating
of the terminals.
Make sure that the earthing connection is set up; do not earth the device on distribution pipes.
Momentary high intensity overcurrents may damage the unit.
Installations made outside of the warnings set forth herein or use outside of the operating limits will
instantly void the warranty.
Make sure that commissioning is carried out by personnel authorised by the company (see commissioning
request form)

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1.5 CONFORMITY
The CE marking (applied on each machine) certifies compliance with the following Community standards:
• Low Voltage Directive 2014/35/EC
• Electromagnetic Compatibility Directive 2014/30/EC
• Ecodesign 2009/125/EC
• RoHS2 2011/65/EU
• WEEE 2012/19/EC
1.6 RANGE
Code Total Flow Rate/renewal air flow
rate
Type of installation
AP20048 up to 620 m3/h Horizontal
1.7 IDENTIFICATION
• The unit can be identified by the rating plate attached to the front bottom panel.
• On the packaging there is another identification rating plate with the unit model and the shipping references.
• The rating plate on the packaging is not valid for tracking the product over the years after sale.
The removal, deterioration and illegibility of the rating plate attached to the unit makes machine identification and
ordering spare parts very difficult, and therefore all future maintenance.

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1.8 CONSTRUCTION FEATURES
ASPIRCOMFORT CLASS 620H is a fan unit complete with heat recovery unit dedicated to air renewal without
wasting energy.
The unit is particularly suitable for single rooms where ducted systems are not possible;
FRAME
Self-supporting sheet metal frame with polyethylene insulated interior;
HEAT EXCHANGER
Polypropylene high efficiency cross flow counter current exchanger.
Low freezing temperatures and operation down to -25°.
Very high exchange efficiency.
FANS
Brushless forward curved centrifugal fans with electronic motor and modulating control.
Very high efficiency and low noise levels.
FILTERS
ePM1 70% filters with low head loss.
Easily removable by removing the lower outer panels;
FREE COOLING
Free cooling inside the unit with generous air flow and damper with motorised actuator.
ELECTRICAL PANEL
Electric panel complete with control board for 4 fan speeds, antifreeze, automatic bypass, temperature probes,
post-heat coils and automatic dirty filter signal.
Control panel mandatory for unit operation with capacitive touch for installation on 503 box or wall;
EFFICIENCY
Thanks to its construction features and components, it is able to reach recovery efficiency of more than 90%.
In the winter and summer seasons there is considerable energy recovery of the renewal air introduced into the
room.

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1.9 DESCRIPTION OF OPERATION
The unit is a decentralised fan system with heat recovery, with the following characteristics and special features:
• it promotes healthy ventilation in offices, schools, businesses, allowing correct air renewal of the rooms and
extracting excess humidity and unpleasant odours;
• it provides considerable energy savings for heating thanks to the efficiency of the heat recovery unit of more
than 90%;
• the epm1 class filters, with low head loss, guarantee outdoor air filtering which is crucial for people with
allergies;
• electronic speed control motors guarantee low electrical energy consumption;
• thermal and acoustic insulation;
• easy access for inspection and maintenance through panel with closures;
• antifreeze protection;
• control unit with display;
• set-up for easy connection to the mains and remote control.
1.10 STATE OF SUPPLY
The supply includes:
• recovery unit complete with fans installed inside the unit;
• polypropylene counter current exchanger pre-inserted inside the unit;
• ePm1 class filters pre-inserted inside the unit;
• electrical box with set-up for connecting terminal board;
• brackets for ceiling / wall installation;
• labels/stickers (safety pictograms, air connection identification, CE marking...) already on the unit;
• installation, use and maintenance manual.

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1.11 REQUIREMENTS FOR START-UP
Before start-up make sure there are no foreign bodies inside the unit.
Check the fastenings of the closing panels and inspection doors.
Check the electrical power supply and the earthing of the unit.
1.12 DISASSEMBLY AND DISPOSAL
Do not take down or dispose of the product on your own. The product must be
disassembled, demolished, disposed of by authorised personnel in compliance with
local regulations.

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2. INSTALLATION
2.1 INSTALLATION CONDITIONS
The unit must be installed based on national and local regulations governing the use of electrical devices
and based on the following indications:
• install the unit inside residential buildings with room temperature between 0°C and 45°C;
• avoid areas near sources of heat, steam, inflammable and/or explosive gases and particularly dusty areas;
• install the unit in a place that is not subject to frost (the condensation water must be discharged not frozen, at
a certain slope, using a trap);
• do not install the unit in zones with a high relative humidity rate (such as bathroom or toilet) to avoid
condensation on the external surface;
• choose a place of installation where there is enough room around the unit for the connections of the air ducts
and to perform maintenance activities;
• 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.
The room chosen for installation must have:
- outdoor air duct connections;
- 230V single-phase electrical connection;
- connection for the condensation discharge.

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2.2 UNIT POSITIONING
The unit can be installed close to the wall with the pipes directly to the outside, or away from the wall with a
minimum of ducting to get the pipes to the outside;
DUCTED INSTALLATION
For ducted installation, leave the dn250mm male fittings on the unit which will be used to connect the pipes to
the outside;
A maximum of 8 metres of ducting is possible for ducted installation;

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For non-ducted installation, the unit does not have ducting but is installed directly adjacent to the wall with direct
holes to the outside;
In this case it is possible to leave the fittings if the centring of the holes outwards is very precise, or to remove them
to bring the unit into contact with the wall;
SLEEVES

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TEMPLATE FOR CEILING HOLES
A template is provided for easy drilling of the holes for mounting the unit:
• Position the installation template on the ceiling
• Mark or drill directly according to the dowel, threaded rod used;
• Provide enough space to perform maintenance activities: it must be possible to open the cover of the unit (from
below).
Do not mount the unit with the sides in direct contact with walls to avoid possible contact noise;
MACHINE FRONT
REAR SIDE OF MACHINE
REAR EDGE OF UNIT
Holes for dowels Ø 8 mm

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TEMPLATE FOR WALL HOLES
A template is provided for easy drilling of the unit's wall holes
• Position the wall installation template;
• Mark and drill two holes in the wall for outdoor air and indoor air outlet;
• Prepare the condensate discharge if it is conveyed directly to the outside with the air passage holes;
• Provide enough space to perform maintenance activities: it must be possible to open the cover of the unit (from
below).
Do not mount the unit with the sides in direct contact with walls to avoid possible contact noise;
CEILING SIDE
EXHAUST
OUTDOOR AIR INTAKE

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PREPARATION FOR CEILING UNIT POSITIONING
To mount the unit on the ceiling, it is necessary to:
• Remove the front discharge grille by pressing upwards on the 3 locking points of the grille to remove it;
• Remove the 4 screws of the two aesthetic sides under the grille;
• Pull the side towards the front of the unit to release the rear fixings;
• Provide enough space to perform maintenance activities: it must be possible to open the cover of the unit (from
below).
Do not mount the unit with the sides in direct contact with walls to avoid possible contact noise;

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CEILING INSTALLATION
After preparing the fastenings with threaded rods or dowels, proceed as follows:
• Raise the unit and secure it to the bars using the nut and washer on the 4 brackets on the sides;
• Level the unit by tilting it 1-2° towards the condensate discharge on the left side by adjusting the height of the
fixing on the brackets;
• Provide enough space to perform maintenance activities: it must be possible to open the cover of the unit (from
below).
Do not mount the unit with the sides in direct contact with walls to avoid possible contact noise;

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2.3 CONDENSATE DISCHARGE CONNECTION
Because of the heat recovery system (the exhaust air is cooled by the air supplied into the heat exchanger), the
humidity contained in the internal air condenses inside the unit.
For correct operation of the heat recovery unit, it is necessary to connect one condensate discharge to the hydraulic
system or disposable drain to the outside. Also, in order for the condensation water to correctly flow out and avoid
air from being sucked in, the condensation discharge must always feature a special trap installed by the installer;
For installation of the condensation discharge, follow these rules:
• set up a slope of at least 2% to the discharge pipe;
• allow the possibility of disconnecting the discharge pipe for any maintenance (especially with ceiling
installation);
• make sure that the discharge end of the pipe is at least below the level of the trap water;
• make sure that the trap is always full of water and at a sufficient height (at least 30-40mm).
On the machine, the drain is located on the left-hand side;
A Dn20 silicone tube is supplied inside the side panel, with a length of 80 mm to facilitate exit from the machine
and connection to the condensate discharge system
There are two options for exiting to the side, either to the rear or to the side;
Remove the part that is chosen for the condensate discharge and pass the pipe through that point

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- ATTENTION
To horizontal sections for condensate discharge with direct installation to the outside;
If water stagnates and outside temperatures are below 0°, there is a danger of the discharge freezing and
therefore possible internal water leakage;

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3 AERAULIC CONNECTIONS
3.1 AERAULIC ORIENTATIONS
The unit is equipped with 2 circular male connections Ø 250mm for outdoor air and expulsion to the outside;
To correctly connect the air ducts, refer to the following diagram and stickers on the unit.
As seen in the unit positioning section, there are two installation options:
- Units with a minimum distance from the external wall and external ducting;
- Units close to the wall without ducting to the outside but with direct outlets;
External side
Internal side
EXHAUST
OUTDOOR AIR
ROOM
DELIVERY
ROOM RETURN

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4 ELECTRICAL CONNECTIONS
4.1 GENERAL
- Before starting any operation to perform the electrical connection make sure that the unit is not electrically
powered.
- Perform the necessary electrical connections referring exclusively to the wiring diagram attached to this
manual.
- Install a suitable cut-off and breaker device exclusively serving the unit.
- It is essential for the unit to be efficiently earthed. The manufacturer will not be held liable whatsoever for the
failure to comply.
- Check that the electrical components chosen for installation (main switch, breakers, cable size and terminals)
are suitable for the electrical power of the installed unit and that they take into account the start-up currents of
the compressor in addition to the maximum achievable load. The relative data is stated on the attached wiring
diagram and on the unit’s rating plate.
- It is forbidden to enter the unit with electrical cables except where specified in this file.
- Use duly-sized electrical cables and conductors that comply with the regulations in force in the various
countries.
- Strictly avoid feeding through the electrical cables so that they are directly touching pipes or parts inside the
unit.
- After the first moments of operation, check the tightness of the power supply terminal screws.
Table for power supply line sizing.
Power supply V/Ph/Hz 230/1/50
Max absorbed current A 3.5

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4.2 POSITIONING AND PROCEDURES OF THE CONNECTIONS
On the machine, the electrical connections are located on the left-hand side;
A 3x1.5mm power supply cable and a cable for the unit's remote panel with a 4-pin connector and a length of 10m
are supplied;
There are two options for exiting to the side, either to the rear or to the side;
Remove the part that is chosen for the electrical cable outlet and route the connections there;
For the electrical connection:
• Remove the screws from the front panel and take the front panel down;
• Use the two cable glands on the bottom side of the unit to enter with electrical cables inside the unit;
• Use electrical cables with double insulation in the passage through to the electrical box;
• Enter the electrical box with the cables and set up the electrical connections;
Make sure that the cables do not touch the fan impellers;