emmeti XECO Series, Installation Manual

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1. DESCRIZIONE DEI COMPONENTI
GB GB
Model Additional charge Maximum length
g/m m
XECO-0913 20 15
XECO-1213 20 15
XECO-1813 20 20
XECO-2413 20 25
XECO-1813D 15 10
XECO-2413T 15 10
7. CHARGE AND TEST OF THE SYSTEM
7.1 Draining and filling
the refrigerating circuit with R 410 A
- The operations indicated below must be carried out only after discon-
necting the air conditioner from the power supply.
- The outdoor unit holds a refrigerant R410A charge suitable for pipelines
up to 5 meters in length.
- Do not mix any substance other than the specified refrigerant (R41 OA)
into the refrigeration cycle.
- When refrigerant gas leaks occur, ventilate the room as soon and as
much as possible.
- R410A, as well as other refrigerants, should always be recovered and
never be released directly into the environment.
- Use a vacuum pump for R41 OA exclusively. Using the same vacuum
pump for different refrigerents may damage the vacuun pump or the unit.
- Utilizzare strumenti (gruppo manometrico, flessibili e pompa vuoto) dedi-
cati esclusivamente ad impianti funzionanti con refrigerante R 410A.
- Do not substitute or mix one gas with another, as they are not compa-
tible.
- For an R 410 A charge, it is imperative to introduce the refrigerant in
liquid phase.
7.1.1 Procedura di vuoto e carica
- Tighten the unions

(Fig. A) as indicated at page6.3.4.
- Connect a vacuum pump to the service connection
3
(fig. A), via a set
of portable pressure gauges.
- Keep it running until a vacuum of 1 mBar or below has been reached, if
the pump is fitted with a vacuum gauge, or for at least 15 minutes if a
vacuum gauge is not available..
- Close the valve on the set of gauges connected to the pump, and turn
the pump off.
- If the pressure gauge set is fitted with a vacuum gauge, wait at
least 5 minutes, then check that the vacuum in the system has been
maintained. If not, look for the cause of the leak.
- For pipelines longer than 5 meters, it is necessary to fill the circuit, using
a measuring cylinder or an electronic balance, with a quantity of R 410A
liquid phase proportional to the size and length of the pipes used, as
shown in the following table:
Flexible hose
connector
Union

3-way valve
Valve cap

Service connection
3
Service connection cap
Note:
To determine the charge additional Considering the length of a single
line.
Liquid
Flexible line
Gas
Vacuum pump
Gauge group
MIC55
After the addition of any refrigerant gas charge which may be necessary:
- Remove caps

(Fig. A) and with the appropriate key open the valves (it
is good practice to open them all the way, then close them by a half of a
turn).
- Put caps

(Fig. A) back on and tighten them.
- Check for possible leaks at the unions with a refrigerant gas leak
detector.
- Disconnect the equipment used from the union
3
(fig A) and close the
service connectors, refitting their caps tightly.
7.1.2 Precautions when adding refrigerant
- Fill from the liquid pipe in liquid form.
- Precautions when adding R410A. It is a mixed refrigerant, so adding
it in gas form may cause the refrigerant composition to change,
preventing normal operation.
- Before filling, check whether the cylinder has a siphon attached or not.
(lt should have something like “liquid filling siphon attached” displayed on
it.)
7. CHARGE AND TEST OF THE SYSTEM
8. DISPOSAL
Fig. A
Filling a cylinder with an attached siphon
Stand the cylinder upright when filling.
There is a siphon pipe inside, so the cylinder need not
be upside-down to fill with liquid.
Filling other cylinders
Turn the cylinder upside-down when filing .
Check the type of refrigerant to be used on the machine namiplate.