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Charging refrigerant
Installer and user reference guide
105
LRYELRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Calculation table: outdoor unit with or without capacity up unit
Amount of refrigerant for liquid piping (refrigeration / air conditioner)
Liquid piping
size (mm)
Conversion
ratio per
meter of
liquid piping
(kg/m)
Piping length
(m)
Total amount
of refrigerant
(kg)
Ø9.5
0.0463
(a)
Ø12.7
0.0815
(b)
Ø15.9
0.1266
(c)
Subtotal (a)+(b)+(c):
[1]
Amount of refrigerant for indoor units
Type of indoor unit
Total amount
of refrigerant
(kg)
Blower coils
(d)
Showcases
(e)
Air conditioner units
(f)
Subtotal (d)+(e)+(f):
[2]
Required amount of refrigerant for outdoor unit (kg)
16.0
[3]
Subtotal [1]+[2]+[3] (kg)
[4]
Factory charged amount of refrigerant into outdoor unit (kg)
6.3
[5]
Additional amount of refrigerant charged when test run if
required (kg)
[6]
Total amount of refrigerant [4]+[5]+[6] (kg)
(a)
[7]
(a)
The maximum amount of additional refrigerant that can be charged at the time of the test
run is 10% of the amount of refrigerant as calculated from the capacity of connected
indoor units. Use [6]≤[2]×0.1 to calculate this maximum amount.
Conversion ratio for indoor units: refrigeration
Type
Conversion ratio
Blower coil
0.059 kg/kW
Showcase
0.294 kg/kW
Conversion ratio for indoor units: air conditioners
Model
Conversion ratio
FXSN50
0.13 kg/unit
FXSN71
0.21 kg/unit
FXSN112
0.32 kg/unit