Once the pipes are connected, check the refrigerant circuit is perfectly sealed.
rate of 40 l/min:
1
2
3
Switch on the pump and open the manometric unit taps.
4
5
Maintain the vacuum for at least 1 hour.
6
Shut the manometric unit taps and switch off the pump.
7
8
Use a 4 mm hex key to open the liquid valve stem until it opens fully.
9
Use a 5 mm hex key to fully open the gas valve stem.
10 Remove the hose connected to the gas pipe union.
11
12 Reposition the caps on the gas and liquid valve stems and fasten them.
Figure 14:
A Valve stem
B Valve stem cover
C Charge hole
D Main valve
Figure 15:
A Manometric unit
B
C Vacuum pump
D
E
F
Gas pipe
G Liquid pipe
H External unit
If the pipe length is over 5 m, top up the refrigerant as indicated in the table in sect. 2.4
Figure 17:
A Manometric unit
B
C Cylinder liquid tap
D R410A gas cylinder
E
F
Gas pipe
G Liquid pipe
H External unit
2.5
HYDRAULIC CONNECTIONS
The choice and installation of components is decided by the installer, who must operate in compliance with good workmanship
and current legislation.
Before connecting the pipes, ensure they are free from stones, grit, rust, debris or any foreign bodies that may damage the system.
It is good practice to create a by-pass in the system so that the appliance does not have to be disconnected in order to wash the
plate heat exchanger. The connecting pipes must be supported, so that their weight does not rest on the appliance.
The hydraulic connections should be completed by installing:
2
43