2.7.3
Additional charge
The charge in the outside units corresponds to the
maximum distances between the outside unit and
the hydraulic module defined in Figure 13.
If the distances are greater, an additional charge of
R410A is required.
The additional charge depends on the distance
between the outside unit and the hydraulic module
for each type of appliance (Fig. 23)
The additional charge of R410A must necessarily be
made by an approved refrigeration engineer.
•
Example for a heat pump model 155
An outside unit 32m away from the hydraulic module
will require an additional charge of:
Additional charge = (32 - 20) x 40 = 480 g
The charge must be introduced after creating the
vacuum and before the hydraulic module is filled with
gas, as follows:
-
Disconnect the vacuum pump (yellow hose) and
connect a bottle of R410A instead in the fluid
extraction position.
-
Open the bottle’s valve.
-
Bleed the yellow hose by loosening it slightly on the
manifold side.
-
Place the bottle on scales with a minimum accuracy
of 10g. Note the weight.
-
Carefully open the blue valve slightly and check the
value shown on the scales.
-
As soon as the value displayed has dropped by the
value for the calculated additional charge, close the
bottle and disconnect it.
-
Then rapidly disconnect the hose connected to the
appliance.
-
Proceed to fill the hydraulic module with gas.
F
Warning
•
Only use R410A!
•
Only use tools suitable for R410A (set of
manometers).
•
Always charge in the fluid phase.
•
Never exceed the length or the maximum difference
in level.
22
Installation and operating manual “1350-EN”
Heat pump, Split, single service
Model 050 - Model 065
20 g
of R410A per additional meter
Length of the connections
10 m
15 m
20 m
Additional charge
none
100 g
200 g
Model 080
20 g
of R410A per additional meter
Length of the connections
15 m
20 m
25 m
30 m
Additional charge
none
100 g
200 g
300 g
Model 095
40 g
of R410A per additional meter
Length of the connections
15 m
20 m
30 m
40 m
Additional charge
none
200 g
600 g
1000 g
Model 128
50 g
of R410A per additional meter
Length of the connections
20 m
30 m
40 m
Additional charge
none
500 g
1000 g
Model 155
40 g
of R410A per additional meter
Length of the connections
20 m
30 m
40 m
Additional charge
none
400 g
800 g
Figure 23 - Additional charge
R410A
Gas
Fluid
Figure 24 - Gas bottle R410A
