Configuration of connection pipe and additional volume of refrigerant
Sheet 2. Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe mm
Indoor unit throttle
Outdoor unit throttle
Gas pipe
Cooling only, cooling and
heating
Cooling only
(g / m)
(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
Note: The additional refrigerant charging amount in Sheet 2 is recommended value, not compulsory.
- 29 -
Liquid pipe
Cooling and
heating
(g / m)
