Tests And Checks - Olimpia splendid Sherpa Instructions Pour L'installation

2.4.1 Tests and c ec s ( g. 14, 15)
Once the pipes are connected, check the refrigerant circuit is perfectly sealed.
To perform the operations described below, use a manometric unit speci c for R410A and a vacuum pump with minimum ow
rate of 40 l/min:
1 Unscrew the cap on the gas line union ( g. 14 ref. C).
2 Connect the vacuum pump and the manometric unit to the gas line union using the hoses with 5/16
3 Switch on the pump and open the manometric unit taps.
4 Lower the pressure to -101kPa (-755mmHg, -1bar).
5 Maintain the vacuum for at least 1 hour.
6 Shut the manometric unit taps and switch off the pump.
7 After 5 minutes go to point 8 solely provided the pressure remains at -101kPa (-755mmHg, -1bar). If the pressure within the
circuit has risen to a value greater than -101kPa (-755mmHg, - 1bar) it will be necessary to search for the leak (using a soapy
solution with refrigerant circuit under nitrogen pressure ~ 30 bar); once identi ed and repaired, restart from point 3.
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 Reposition the cap on the gas line union and fasten it using a spanner or xed wrench.
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 Vacuum meter (where applicable)
C Vacuum pump
D Hose tap (open)
E Union (closed)
F Gas pipe
G Liquid pipe
H External unit
2.4.2 C arging additional refrigerant ( g.16, 17)
If the pipe length is over 5 m, top up the refrigerant as indicated in the table in sect. 2.4
Note down on the label ( g. 16) provided with the external unit, the charge of the external unit (A), the quantity of added refrigerant
(B) and the total charge of the system (A+B).
Figure 17:
A Manometric unit
B Vacuum meter (where applicable)
C Cylinder liquid tap
D R410A gas cylinder
E Union (closed)
F Gas pipe
G Liquid pipe
H External unit
2.5 HYDRAULIC CONNECTIONS ( gg. 18, 19, 20, 21)
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 are located at the bottom of the unit ( g. 18).
The hydraulic connections should be completed by installing:
• air relief valves at the highest points of the pipes;
• exible elastic joints
• on/off valves
• sieve water lter with 0.4 mm mesh
• thermally insulate all hydraulic components and piping
2
tting ( g.15).
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