26
Sheet 2. Additional refrigerant charging amount for R22 R407C R410A
and R134a
Note: The additional refrigerant charging amount in Sheet 2 is recommended
value, not compulsory.
Diameter of connection pipe mm
Indoor unit throttle
Outdoor unit throttle
Liquid pipe
Gas pipe
Cooling only,
cooling and heating
(g / m)
Cooling only
(g / m)
Cooling and
heating (g /
m)
Ф
6
Ф
9.5 or
Ф
12
20
15
20
Ф
6 or
Ф
9.5
Ф
16 or
Ф
19
50
15
50
Ф
12
Ф
19 or
Ф
22.2
100
30
120
Ф
16
Ф
25.4 or
Ф
31.8
170
60
120
Ф
19
-
250
250
250
Ф
22.2
-
350
350
350
Configuration of connection pipe and additional volume of refrigerant
