Refrigerant Piping Connection; Pipe Length And Additional Charge; Connection Instructions -Refrigerant Piping; Cut Pipe - AUX AMW-NFH3 Benutzer- Oder Installationshandbuch

REFRIGERANT PIPING CONNECTION

Pipe Length and Additional Charge

The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal
efficiency is tested on units with a pipe length of 7 meters. A minimum pipe run of 3 metres is required
to minimise vibration and excessive noise.
Refer to the table below for pipes requirements:
Pipes requirements (R32 refrigerant)
Max. lenght:
MODEL
Max. Length for all rooms (m)
Max. Leng th for one indoor unit (m)
Max. height different between
indoor and outdoor unit (m)
Max. height different between indoor units (m)
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
14 / 18
MODEL
Charged until
15m
Additional
charge
25 x (Total length - 15)
R32 (g)
Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for
future maintenance.
1. Measure the distance between the indoor and
outdoor units.
This unit must be installed by a professional according RD 795/2010, RD 1027/2007 and RD 238/213
14 / 18
40
25
*(1)
15
OU higher than IU
OU lower than IU
15
10
21 / 27
22,5m
25 x (Total length - 22,5)
Max. height difference:
36 / 42
21 / 27
Outdoor unit
60 80
30 35
*(1) *(1)
15 15
15 15
10 10
36
30m
25 x (Total length - 30)
2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle. Refer to Fig. 5.1 for bad cut examples.
90°
93
6
Indoor unit
Indoor unit
Indoor unit
42
37,5m
25 x (Total length- 37,5)
Oblique Rough Warped
10m
5m
10m
Fig. 6.1