BMKH42M-NDG3 Owners Manual

Free match series
7
3.3 Piping Connection
The maximum pipe length is shown in the following table. When the distance between units (piping length) is
out of the range listed below, normal run of the unit can not be guaranteed.
Table 5
Model
Connecting Pipe (inch)
Max. Pipe length(ft)
Max. Height Difference between Indoor
Unit and Outdoor Unit (ft)
Liquid Gas
30K Ф1/4 Φ3/8 229.6
When the outdoor unit is above,
maximum height difference between
indoor and outdoor units is up to 49.2ft;
When the indoor unit is above,
maximum height difference between
indoor and outdoor units is up to 49.2ft;
36K Ф1/4 Ф3/8 246.1
BMKH42M-NDG3 Ф1/4 Ф3/8 246.1
NOTICE
1) Use water-proof insulating pipe.
2) Wall thickness of pipe: 0.019-0.039 inch; bearing pressure: 3.0MPa
3) The longer the connection pipe is, the more cooling and heating capacity will decrease.