Refrigerant Pipe Connection - AUX AMW-NFH Serie Manual De Usuario

3. Refrigerant pipe connection

Before installing, make sure that the height difference, the length of refrigerant pipe and number of bends
between indoor and outdoor units, meet the following specifications.
Max. lenght:
UNIT
Note: If the outdoor unit is installed above the indoor units and the sum
of all the tanks is more than 7m, an oil trap must be installed in the
gas pipe every 3 meters.
Additional charge
UNIT
AM2 (2x1)
Charged until
15m
Additional
charge 20 x (Total length - 15)
R32 (g)
AM2 AM3 AM4 / AM5
(2x1) (3x1) (4x1 / 5x1)
40 60 80
25 30 35
*(1) *(1)
15 15 15
15
15 15
10 10 10
AM3 (3x1)
22,5m
20 x (Total length - 22,5)
46
Max. height difference:
Outdoor unit
*(1)
AM4 (4x1)
30m
20 x (Total length - 30)
Indoor unit
Indoor unit
10m
5m
10m
Indoor unit
AM5 (5x1)
37,5m
20 x (Total length- 37,5)