13
2.- INSTALLATION
5
th
Refrigerant charge:
Remove vacuum pump and connect the refrigerant bottle. Check TABLE 2 for charge of refrigerant per meter
line for each model.
Set up the amount of additional refrigerant on the weighting scale and open the high pressure side (suction).
(with R-407C refrigerant, the charging cylinder must be on vertical position and it is important to charge in liquid
state).
Close the sides of gauge valve from the service port of the unit, and put the covers.
6
th
Open the service valves.
7
th
The unit is ready to work.
1
st
Remove the pressure of refrigerant from the
connecting line through the service port located on
that line.
2
nd
Remove the covers from the connecting lines.
3
rd
Braze the piping connection lines to the indoor unit.
4
th
With the service ports closed make vacuum, and
connect the vacuum pump to the 1/4" service port
on the connecting line to achieve -750mm Hg; after
that, keep the vacuum pump working at least for
one hour in order to make the vacuum to the
connecting lines and to the indoor unit. Disconnect
the vacuum pump.
2.5- REFRIGERANT CONNECTIONS
Service
valve
To outdoor
unit piping
To the
indoor unit
Service
port
Copper
cover
Copper tube to
connect with
indoor unit
FOR UNITS SUPPLIED WITH SERVICE VALVES AND KIT REFRIGERANT FACTORY PRECHARGED,
PROCEED AS FOLLOW: