11
H)
Valve opening and refrigerant release
relative to the external unit
I) PUMP DOWN
This procedure is performed when the group
must be moved or assistance is provided
to the refrigerant circuit.
Emptying allows you to collect everything the
refrigerant in the external unit without yes verify
losses.
L)
RECOVERY PROCEDURE
The complete recovery of the refrigerant of the outdoor
unit
.
3.
OUTDOOR UNIT INSTALLATION
3.1
GENERAL
In choosing the installation position accurately respect
the following indications
:
Temperatura esterna
pressione da raggiungere
Tempo di evacuazione dopo il
raggiungimento della pressione
°C
Pa 8 (bar)
h
≥
20
1000 (0,01)
1
10
600 (0,006)
1
0
250 (0,0025)
2
-10
250 (0,002)
3
Tabella 5 - controllo della pressione
1
8
3
2
5
4
6
Fig. C
Rubinetto lato gas
Rubinetto lato liquido
Temperatura esterna
pressione da raggiungere
Tempo di evacuazione dopo il
raggiungimento della pressione
°C
Pa 8 (bar)
h
≥
20
1000 (0,01)
1
10
600 (0,006)
1
0
250 (0,0025)
2
-10
250 (0,002)
3
Tabella 5 - controllo della pressione
1) Remove the section valve cap
of the coolant, liquid side (Fig. C n ° 1).
2) Open the valve A with the help of a key
hexagonal turning counter clockwise up to his
stop (Fig. C n ° 2).
3) Replace the cap.
4) Remove the cap from the sectioning valve
of the refrigerant gas (Fig. C n ° 4).
5) Open the valve with pliers by turning in
counter-clockwise one quarter turn (Fig. C n ° 5).
6) Replace the cap.
7) Disconnect the vacuum gauge and the
vacuum pump.
8) Replace the cap on the valve (Fig. C n ° 3).
9) Tighten all the caps with the help of a key
torque control with tightening torque 20 a
25 Nm.
10) Check the tightness of the fittings using a
leak detector.
- Connect a low pressure gauge with
a pipe to the service port of the gas valve.
- Open the gas valve in half and empty the air from the
pressure gauge piping using gas refrigerant.
- Completely close the liquid valve.
- Turn on the machine in cooling mode.
- When the pressure of the pressure gauge moves
between 0 and 0.5 kg / cm 2G (between 14.2 and 7.1
P.S.G.I) completely close the gas valve e
turn off.
- Make sure that the difference between INTERNAL
UNITS
and the OUTDOOR UNIT is not greater than 5.0 m.
- The appliance must be installed so
that the influences of adjacent structures and / or i
effects of particular climatic conditions (snow,
wind etc ...), do not compromise the functioning
of the product and / or the safety of people e
of assets.
- Make sure the space in the back
unit is greater than 30 cm, the part
front must have at least 150
cm of space completely free.
- Make sure there are no obstacles to the
free circulation of air through the
heat exchangers: A) do not arrange plants or
animals directly close to the stream
air;
B) avoid installation in the corners where it is used
the depositing of dust, leaves and whatever
can reduce the efficiency of the exchangers
obstructing the passage of air (Fig 5).
