System Vacuum; Filling The System; Wall Split Electrical Connection; Wall Split Running Tests And Troubleshooting - Olimpia splendid UNICO TWIN Instrucciones Para La Instalación, Uso Y Mantenimiento

2
- If after about 3 minutes the pressure does not drop, the circuit is in good working order and the pressure can be raised to 15
bar by reopening the tank.
- Check again after 3 minutes that the pressure remains stable at 15 bar.
- For safety reasons apply a solution of soapy water to the connectors and check for the formation of bubbles revealing leakage
of gas.
- In case of a pressure drop, if the test with soapy water gives a negative result, pump R410A into the circuit and find the leak
with a leak detector. Since the circuit has no welds, the only place leaks can occur is on the joints, in which case, tighten the
nuts thoroughly or make new connections after flaring the pipes again. Repeat the seal test.
2.2.9

System vacuum

After testing the seal, the system has to be placed under a vacuum to remove any impurities in it (air, nitrogen, moisture).
- Use a vacuum pump with a capacity of 40 l/min (0,66 l/s) and connect it, by means of a hose with a 5/16" connector to the
service coupling of the gas line.
- Lower the pressure in the circuit to the absolute value of 50 Pa for about 2 hours; if after that period the setting of 50 Pa is not
reached, it means there is a high level of moisture in the circuit or that there is a leak.
Keep the vacuum pump in operation for another 3 hours.
After that time, if the value has still not been reached, it will be necessary to find the leak.
- After placing the system under a vacuum and cleaning it, disconnect the pump coupling while it is still on.
- Close the gas line service coupling with its cap (fig. 39 ref. A).
2.2.10

Filling the system

Open the closing cap so as to be able to access he tap of the intake line and that of the liquid supply and fill the system with
coolant.
2.2.11

WALL SPLIT electrical connection

The appliance is fitted with a power cable with plug (Y type connection). If using a socket near the appliance, all you have to do is
insert the plug.
Before connecting the air conditioner ensure that:
- The voltage and power frequency values match those specified on the appliance plate data.
- The power line is equipped with an effective earth connection and is correctly sized for maximum power consumption of the
air conditioner (minimum cable section of 1.5 mm
- The appliance is powered solely through a socket compatible with the plug provided.
WARNING: The appliance's power network must be equipped with a suitable omnipolar disconnection device compliant
with national installation regulations. It should nonetheless be checked that the electric power supply is earthed and
equipped with suitable protection against overloads and/or short-circuits (a type 10 AT delay fuse or other devices with
equivalent functions are recommended).
To prevent any risk of electric shock, the master switch must be disconnected before making electrical connections and carrying
out maintenance on the appliances.
2.2.12

WALL SPLIT running tests and troubleshooting

The air conditioner is able to run a brief self-diagnosis cycle to check the internal components are running normally. During this test,
the electronic controller can be configured according to whether the appliance has been installed towards the top (ceiling level) or
bottom (floor level) of the wall.
To activate the self-diagnosis function, proceed as follows:
- power the appliance by inserting the plug or using the system's disconnect switch;
- ensure that the machine is in stand-by (no LEDs lit on the console);
- Press the micro key located under the cover on the right-hand side of the SPLIT unit (fig. 51) for at least 10 seconds. A beeper
indicates the self-diagnosis function is activated.
The console now displays the current machine configuration for a few instants, according to the following:
LED A (red) on: equipment fitted with heat pump function;
LED B (green) on: installation at bottom of wall (floor level);
LED C (orange) on: installation at top of wall (ceiling level) (factory setting);
LED D (green) on: settings restore following black-out active (factory setting).
All the LEDs on the console will then start flashing simultaneously for 10 seconds. During this phase, the micro key can be pressed
to change the previously displayed setting relating to the type of installation.
NB: Setting the electronic controller for installation at the top of the wall causes an automatic adjustment of the ambient temperature
of 3°C.
48
).
2
2