Installation Instruction; Pipe Length; Refrigerant Additional Charge - Panasonic CU-B14DBE5 Service Manual

10 Installation Instruction

10.1. Pipe length

• CORRECTION OF CAPACITIES
1. Correction of capacities according to the connecting pipe length.
The data of rated capacities (marked on the name plate) are based on 7.5 meters connecting pipe and horizontal installation.
2. For other pipe length of other installation multiply by the following correction factor to determine the revised cooling capacity.
Model No.
R
Cassette 4
type 1 CS-F18DTE5
0
A
Note :
Piping elevation B = outdoor unit installed at top
Piping elevation C = outdoor unit installed at bottom

10.2. Refrigerant additional charge

1. Piping installation by standard piping
• At the time of shipment from the factory, this unit is charged with enough refrigerant for an equivalent pipe length of 20m.
(Refer the following table)
But when the piping length exceeds 20m, additional charge is required according to the following table.
Example:
CU-J18DBE5
In case of 30m long pipe (one way), the amount of refrigerant to be replenished is: (30 - 20) x 20 = 200g
Model Name
CU-J18DBE5
Piping Size / Length & Elevation
Piping size
Liquid / Valve Gas /
High Low
6.35 3-ways 12.70
Liquid piping Gas piping
(dia.mm) (dia.mm)
6.35
Piping Piping
length elevation
(A) (B)
Valve Max(m) Max(m)
3-ways 30 20
Standard piping specification
Gas chargeless
length (m)
12.7 20
30
Piping Piping
elevation Chargeless Refrigerant
(C)
Max(m) Max(m)
20 20
Additional gas
volume (g/m)
20
Add
(g/m)
20