Charge And Test Of The System; Draining And Filling The Refrigeration Circuit With R 410 A; Additional Charge - emmeti XECO Serie Manual Instalación E Instrucciones Para El Uso De La Unidad Interna

7. CHARGE AND TEST OF THE SYSTEM

1. DESCRIZIONE DEI COMPONENTI
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
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:
Model

Additional charge

g/m
XECO-0913 20
XECO-1213 20
XECO-1813 20
XECO-2413 20
XECO-1814D 15
XECO-2414T 15
Note:
To determine the charge additional Considering the length of a single
line.
Flexible hose
connector
Fig. A
54
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
- Put caps · (Fig. A) back on and tighten them.
- Check for possible leaks at the unions with a refrigerant gas leak
(fig. A), via a set
- Disconnect the equipment used from the union
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
- Before filling, check whether the cylinder has a siphon attached or not.
Filling a cylinder with an attached siphon
Maximum length
m
15
15
20
Filling other cylinders
25
10
10
Check the type of refrigerant to be used on the machine namiplate.
Union
3-way valve
Valve cap
Service connection
Service connection cap
Flexible line
is good practice to open them all the way, then close them by a half of a
turn).
detector.
service connectors, refitting their caps tightly.
it in gas form may cause the refrigerant composition to change,
preventing normal operation.
(lt should have something like "liquid filling siphon attached" displayed on
it.)
Stand the cylinder upright when filling.
There is a siphon pipe inside, so the cylinder need not
be upside-down to fill with liquid.
Turn the cylinder upside-down when filing .
GB GB
Liquid
Gas
Gauge group
Vacuum pump
(fig A) and close the