Hitachi RAS-2WHVRP - Correction Factors; Piping Length Correction Factor

3 Capacity and selection data
Correction factors
TCGB0123 rev.2 - 10/2019
64
3.4 Correction factors
3.4.1 Piping length correction factor
The correction factor is based on the equivalent piping length in metres (EL) and the height difference between outdoor
unit and indoor unit in metres (H).
+H
-H
H: Height difference between indoor unit and outdoor unit (m).
- H>0: Outdoor unit is placed higher than indoor unit (m).
- H<0: Outdoor unit is placed lower than indoor unit (m).
L: Actual one-way piping length between indoor unit and outdoor unit (m).
EL: Equivalent one-way piping length between indoor unit and outdoor unit (m).
- One 90º elbow is 0.5 m.
- One 180º bend is 1.5 m.