Western Aertesi Brezza Series User manual
3
INDEX
1-INTRODUCTION ............................................................................................................................................ 4
2-RECEPTION ................................................................................................................................................... 4
3-POSITIONING ................................................................................................................................................ 4
4-INSTALLATION .............................................................................................................................................. 5
5-WATER CONNECTIONS ............................................................................................................................... 8
6-PANEL INSTALLATION ............................................................................................................................... 12
7-BLADES ADJUSTMENT .............................................................................................................................. 16
8-FLAE INSTALLATION (Accessory) .............................................................................................................. 17
9-FLAM INSTALLATION (Accessory) ............................................................................................................. 19
10-KIT VALVES INSTALLATION (Accessories) ............................................................................................. 20
11-ELECTRICAL CONNECTIONS .................................................................................................................. 22
12-MAINTENANCE ......................................................................................................................................... 23
12.1-Filter ..................................................................................................................................................... 23
12.2- Pump ................................................................................................................................................... 25
12.3-Fan ....................................................................................................................................................... 27
13- TROUBLESHOOTING .............................................................................................................................. 27
14- WASTE DISPOSAL ................................................................................................................................... 29
4
1- INTRODUCTION
Series units BREZZA are designed for the function of heating, cooling, dehumidification and filtration of
residential and tertiary sector (offices, public buildings, or so) for under cealing installation. Following
applications are not permitted:
- Outdoor installation;
- Operations in humid or explosive or dusty environments
- Operations in corrosive environments, especially for the aluminum fins of the coil.
The use of the unit is not intended for persons (including children) with reduced physical, mental or
sensory abilities, or people who have not received adequate information, unless this is done under the
supervision of a person responsible for their safety.
The installation and maintenance of the units are intended to qualified persons who received necessary
instructions. These operations must be done in accordance with safety regulations in force. These standards
may, for example, work safety (use of protections for the eyes and hands, ...), plant and electrical installations,
pressure vessels, refrigeration equipment, lifting equipment.
The manufacturer / seller is not responsible for any damage to persons or property resulting from the failure of
requirements in this manual of regular maintenance or use of non-original spare parts or change in the product
status with respect to upon receipt. Also in these cases will void the warranty on the product will not be granted.
This manual must be kept with the machine.
2- RECEPTION
The units are delivered packed in cardboard boxes. The body of the cassette has a separate package from the
front panel. Do not add weight on the packaging and not to stack more boxes than such as are found at the time
of delivery. Check the product label,it must have the same code of the order and have no damage to the
packaging or the product. In case of non- compliance, immediately contact the manufacturer or the seller and do
not proceed with the installation. Dispose of packaging in compliance with the rules on waste disposal.
5
3- POSITIONING
It is necessary is to provide a site in the ceiling of the following dimensions (maximum and minimum):
MAX MIN
Single cassette 600x600 605x605 590x590
Double cassette 1200x600 1205x605 1190x590
4- INSTALLATION
Remove the cardboard packaging and all guards exterior side of polystyrene before installation. Do not remove
the drip polystyrene present within the unit. Do not use the front panel to the box before installation. The panel
will be applied as a last step.
DO NOT REMOVE
Styrofoam tray
The unit must always be handled by two people and must be grasped only on the proper steps (near the
corners of the metal structure), taking care not to damage less resistant parts, in particular the polystyrene tray
The unit must be positioned in the center of the room or of the area to be treated. There should be no tall
furniture (such as shelves, cabinets, bookcases) under the cassette, which might prevent the accessibility and
the correct intake. The distance between the ceiling and the countertop must be at least 15mm greater than the
height of the cassette. The cassette is designed to have a Coanda effect on supply air. This means that the air
is moving close to the ceiling. For this reason, the ceiling must free from obstacles (protruding ceiling, or other)
to allow the correct air flow distribution. The cassette should not be exposed to direct sunlight or heat sources.
6
AREAS OF HANDLING GRIPS
Grip regions
Apply four M8 threaded rods (not supplied) to the ceiling with bolts (not supplied) or other fasteners. Make sure
that the components used are rated to support the weight of the unit.
.
Single cassette
600x600
Double cassette
1200x600
Installed cassette weight
kg 32 60
The length of the bars depends on the distance between the ceiling and the countertop. The spacing of the bars
must comply with the measures of the drawing below and must be central to the opening of the ceiling.
Single cassette 600x600 Double cassette 1200x600
Attach the four brackets supplied with threaded rods, nut, locknut and washer M8 (not supplied).
7
Nut
Rods
Nut
Locknut
Mounting brackets Ceiling
Lift the box using a suitable lifting device (tackle, hoist, forklift or other) appropriate, that can
support the weight of the
box. Tilting the unit, with the electrical panel upward, pass it through the opening of the ceiling and position it in a
horizontal position.
Bracket Installation
The hooks of the brackets allow you to temporarily support the unit. Set firmly the brackets to the unit with the
screws provided (2 screws per bracket).
8
Fixing screws bracket
Make sure the unit is level and that it is aligned to the ceiling. If necessary, adjust the height at the nut and
locking nuts that hold the threaded rod to the bracket.
Position box
Depending on the type of ceiling and installation site, you can use other procedures, provided they comply with
the regulations and do not put at risk the safety of people.
5-WATER CONNECTIONS
The unit is equipped with a coil which is suitable to work with water, possibly mixed with glycol. To avoid the
formation of condensation on the surfaces of the cassette during the summer period, in the moment when the
fan is not in operation it is recommended to stop the chilled water flow through a motorized valve. All the pipes,
in particular those of the chilled water, must be insulated to prevent dripping of condensation. For ease of
maintenance, it is advisable to provide for manual ball valves, in order to exclude the unit from the plant.
During connection of the pipes, not to twist the coil tubes and valves, it is recommended to use key and second.
9
The valves can be pre-installed or supplied in the kit (to be assembled by the installer). In any
case, take care to observe the information concerning the entry and exit of water.
Valves group (3 pipes system) and auxiliary drain pan (single cassette 600x600)
Valves group 2 pipe system and auxiliary drain pain (single cassette 600x600)
1. Input for 2 pipes system or cold coil (4 pipe system)
2. Output for 2 pipes system or cold coil (4 pipe system)
3. Hot/Cold valve (2 pipes) / Cold valve (4 pipes)
4. Input for hot coil (4 pipe system only)
5. Output for hot coil (4 pipe system only)
6. Hot valve (4 pipes)
7. Auxiliary drain pan
1. Input for 2 pipes system or cold coil (4 pipe system)
2. Output for 2 pipes system or cold coil (4 pipe system)
3. Hot/Cold valve (2 pipes) / Cold valve (4 pipes system)
4. Input for hot coil (4 pipe system only)
5. Output for hot coil (4 pipe system only)
6. Hot valve (4 pipe system only)
7. Auxiliary drain pan
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To fix the auxiliary drain pan, you must first fix the side bracket using two self-tapping screws, then fix the
auxiliary drain pan with two self-tapping screws and silicone to the edge between the tray and the side of the
box.
Installation of the auxiliary drain pain
The double Cassettes (1200x600) have two kit valves, one for the right coil and one for the left coil. The two
valves kit must be connected in parallel, for this purpose is available a kit consisting of flex inox and TEE
brass.
1. Valve heating/cooling (2 pipes)- valve cooling (4 pipes)
2. Valve heating only 4 pipes
3. Auxiliary drain pan (ADPB)
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