Single Zone Installation Manual

 Page 25 
Refrigerant Piping Connection
6
Refrigerant
Piping
Connection
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),
in North America, the standard pipe
length is 7.5m (25’). A minimum pipe run of 3 meters is required to minimise vibration & excessive noise.
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
R22 Fixed-speed
Split Air Conditioner
R410A Fixed-speed
Split Air Conditioner
< 15,000
< 18,000
25 (82ft) 10 (33ft)
10 (33ft) 5 (16ft)
≥ 15,000 and < 24,000 30 (98.5ft) 20 (66ft)
20 (66ft)
≥ 24,000 and < 36,000 50 (164ft) 25 (82ft)
≥ 21,000 and < 35,000 10(33ft)
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.
≥ 18,000 and < 21,000
≥ 18,000 and < 36,000
15 (49ft)
8(26ft)
8(26ft)< 18,000
20 (66ft)
25 (82ft)
10(33ft)