Installation Instruction; Pipe Length - Panasonic CS-F24DD2E5 Service Manual

10 INSTALLATION INSTRUCTION

10.1. Pipe length

10.1.1. Correction of capacities
Correction of capacities according to the connecting pipe length.
The data of rated capacities (marked on the name plate) are based on 7.5 metres connecting pipe and horizontal
installation.
Model No.
R CS-F24DD2E5
HIDE 4 CS-F28DD2E5
AWAY 1 (Me) CS-F34DD2E5
TYPE 0 CS-F43DD2E5
A CS-F50DD2E5
Note :
Piping elevation B = outdoor unit installed at top
Piping elevation C = outdoor unit installed at bottom
• Calculation 1
In case of CU-B28DBE5, B28DBE8, B34DBE5, B34DBE8
When pipe length exceed 30m calculated by formula 1, adding refrigerant amount should be calculated by formula 2. If
calculation result is less than 30m, it is not necessary to add refrigerant.
Pipe length = main pipe + (branch pipe La + branch pipe Lb)/2.78...formula 1
Add refrigerant = (main pipe + (branch pipe La + branch pipe Lb)/2.78-30) * 50...formula 2
• Calculation 2
In case of CU-B43DBE8, B50DBE8
When pipe length exceed 30m calculated by formula 3, adding refrigerant amount should be calculated by formula 4. If
calculation result is less than 30m, it is not necessary to add refrigerant.
Pipe length = main pipe + branch pipe La + branch pipe Lb...formula 3
Add refrigerant = (main pipe + branch pipe La + branch pipe Lb-30) * 50...formula 4
Piping Size / Length & Elevation
Piping size
Liquid / Valve Gas /
High Low
9.52 3-ways 15.88 3-ways
Piping Piping
length elevation
(A) (B)
Valve Max (m) Max (m)
50 30
42
Piping Piping
elevation Chargeless
(C)
Max (m) Max (m)
20 30
Add
Refrigerant
(g/m)
50