Installation Of The Unit; Refrigeration Connections; Condensate Drain - AERMEC EXC 070 I Manual De Instalación

INSTALLATION OF THE UNIT

WARNING:before carrying out any work, put the proper
individual protection devices on.
WARNING:check that the power supply is disconnected
before performing operations on the unit.
WARNING: Electrical connections, fan coils and their
accessories may only be installed by technicians with
the suitable requisites who are properly qualified for the
installation, transformation, extension and maintenance of
the systems and are able to check the same in terms of safety
and operation (in this manual they will be indicated with the
general term "persons with specific technical skills").
In the specific case of electrical connections, the following
must be checked:
- Measurement of the electrical system insulation strength.
- Continuity test for the protection wires.
Instructions essential for the proper installation of the
equipment are shown here.
The final touches to all the operations are however left to the
experience of the installation engineer in accordance with
specific requirements.
Do not install units in premises where there are inflammable
gases or acid or alkaline substances that could irreparably
damage the aluminium-copper heat exchanger or internal
plastic parts.
Do not install the unit in premises where oil vapours mixed
with the treated air can be deposited on the exchange coils,
reducing their performance or on the parts inside the unit
damaging the plastic parts.
CONNECTIONS
The water, condensate drainage and electrical circuit ducts
must be provided for.
• E
LECTRICAL CONNECTIONS
The indoor and external units must have the electrical
connections made as shown in the wiring diagrams supplied
with the devices.
The unit's mains line must be protected by a thermomagnetic
circuit breaker.
The EXCI cassette conditioners must be powered with a current
of 1 ~ 230 V 50 Hz and connected to the earth, the line
voltage must however fall within the tolerance of ±10%
compared with the nominal value.
To protect the units against short-circuits, fit a hermomagnetic
omnipolar circuit breaker (IG) to the power line with a
minimum opening distance of the contacts of 3mm (see
"wiring diagrams" chapter).
The electrical power cable must be of the H07 V-K or N07 V-K
type with 450/750V insulation if inside a tube or raceway. Use
cables with double H5vv-F type insulation for visible cable
installation.
Follow the wiring diagram with the equipment and shown in
this document when making the connections.
The TL2I receiver must be connected to the card of the indoor
unit.
• R
EFRIGERATION CONNECTIONS
The refrigeration attachments of the EXCI units are shown in TAB
2.
This air conditioner uses R410A refrigerant.
The combinations permitted among the units are described in this
manual in chapter " VERSIONS AND SIZES AVAILABLE".
Before any intervention, make sure what type of refrigerant
the outside unit is charged with, only use equipment that is
suitable for the gas used.
Never use different gases when topping up the refrigerant in
the system. Follow the instructions below:
1. Keep all open pipe ends sealed closed with a plug or similar
until all connections have been made.
2. Proceed with extreme caution while connecting the piping
so that water, dirt, etc. do not get into the pipes or the system.
3. The pipes connected to the indoor and outdoor units must
be new.
The required thickness for the pipes is 0.8 mm or more
4. Only use refrigerant that conforms with that already loaded
in the outdoor unit when topping up the refrigerant in the
system. Do not in any case add lubricating oil to the system.
5. In order to prevent accidental filling with other refrigerants
in the outdoor units containing R410A gas, the diameter of the
three-way valve service connection is (1/2").
To prepare the copper pipes, proceed as follows:
- cut the current length of copper pipe using a pipe cutter;
- smooth the ends using a flaring end;
- isolate the tubes and insert the conical nuts before
countersinking;
- for countersinking, use a conical pipe flanger;
- check that the conical surface is centred on the pipe, is
smooth and does not have any fractures and the thickness is
even.
Proceed as follows for the refrigeration lines:
- pass the lines, the condensate drain tube and the electric
cables through the hole prepared in the wall so the ends of
the lines coincide with the unit's connections (before passing
them through the hole, close the ends with tape so dirt will
not enter);
- make the refrigeration line connections in correspondence
to the internal unit;
- before connecting the lines with the unit, ensure that the
position is final and then proceed in tightening using a
spanner and a lock nut to avoid torsions on the machine
enclosure and be careful to clean the surfaces of the joints
in order to ensure perfect contact between the tightened
surfaces;
- shape the refrigeration lines to bring them in correspondence
to the external unit connections (you are advised not to
create refrigeration lines curves with a radius below 100 mm
to avoid crushing the pipe section);
- attach the condensate drain tube (see the "Condensate
drain" paragraph);
- remove the protections from the refrigeration line ends and
tighten the connections to the outdoor unit using a spanner
and a lock nut to avoid torsions on the machine enclosure;
- connect the vacuum pump to the gas line's connecting pin;
- do not open the cocks (the vacuum must be created on the
lines and on the indoor unit);
- create a vacuum until reaching -760 mmHg;
- once all above steps have been completed and after having,
definitely, disconnected the vacuum pump, completely open
the cocks by turning the nuts using a 4 mm hexagon male
spanner;
- replace caps and tighten them;
- create the condensate drain;
- after having checked that everything is correct and the
position of the lines are final, fasten the cables and the
refrigeration lines together and anchor them with clamps.
• C
ONDENSATE DRAIN
In the case of horizontal installation, fit the condensate drain
connection supplied. Be sure to seal the connection between
tray and connection with silicone.
The condensate drain network must be properly scaled and
the piping situated in such a ways as to keep an adequate
slope along the route (min.1%). In the case of drainage into the
sewerage network, you are advised to make a syphon to stop
bad smells being returning into the room.
15