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• Table 2
The maximum load of refrigerant in a room must be compliant with what follows:
m
And must not be lower than
Acronym
m
Is the maximum allowed load of refrigerant in the system in kg
max
LFL
Is the lower flammability in kg/m
A
Is the room area in m
Is the release height, the vertical distance in (m) from the floor to the release
h
point when the appliance is installed
0
SF
Is a safety factor with a value of 0,75
- Systems with a load of refrigerant <1,842 kg are not subject to minimum area requests.
- For 8/10kW units, loads exceeding 2,22 kg are not accepted (maximum length of the pipes equal to
30m).
- For 12/14/16 kW units, loads exceeding 2,41 kg are not accepted (maximum length of the pipes equal
to 30m).
• Table 3
Minimum ventilation area
for natural ventilation: internal unit
Acronym
Anv
Is the minimum opening for natural ventilation in m
min
m
Is the effective load of refrigerant in the system in kg
c
M
Is the molar mass of the refrigerant
g
Is gravity acceleration of 9,81 m/S
29
Is the average molar mass of air in kg
A
Is the required minimum area of the room in m
min
2,5 x (LFL)
=
(5/4)
max
=
SF x LFL x h
m
max
2
Anv
min
x h
x (A)
1/2
0
x A
0
Description
3
m
- m
c
max
x
=
LFL x 104
g x m
Description
2
3
2
SHERPA AQUADUE TOWER
A
M
x
M - 29
max
EN - 11
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