Installation Manual -
DVC/DVH 09/12/18/24 Series
Page 25
Refrigerant Piping Connection
6
Note on Pipe Length
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 5 meters (16.5ft).
Refer to the table below for specifications on the maximum length and drop height of piping.
Maximum Length and Drop Height of Refrigerant Piping per Unit Model
Model
Capacity (BTU/h)
Max. Length (m)
Max. Drop Height (m)
R410A Inverter Split Air
Conditioner
< 15,000
25 (82ft)
10 (33ft)
≥
15,000 and < 24,000
30 (98.5ft)
20 (66ft)
≥
24,000 and < 36,000
50 (164ft)
25 (82ft)
≥
36,000 and
≤
60,000
65 (213ft)
30 (98.5ft)
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.
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.
Oblique
Rough
Warped
90°
Fig. 5.1
Refrigerant
Piping
Connection
24