Correction Factors; Piping Length Correction Factor - Hitachi YUTAKI S Series Technical Catalogue

3 Capacity and selection data

Correction factors

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: 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.
-
64 TCGB0123 rev.2 - 10/2019
-H