Pipe Length - Panasonic CS-A18BD3P Service Manual

10 PIPE LENGTH

10.1. CORRECTION OF COOLING AND HEATING CAPACITIES
Correction of cooling and heating capacities according to
the connecting pipe length.
The data of cooling capacities (marked on the name plate)
are based on 5 metres connecting pipe and horizontal
installation.
(Cooling)
Equivalent Length = actual pipe length +
number of elbow x ELE + number of oil
trap x ELO
ELE : equivalent length of elbow.
ELO : equivalent length of oil trap.
10.2. REFRIGERANT ADDITIONAL
CHARGE
• • • • The piping length exceeds 10 metres.
APPLICABLE FOR ALL MODELS
Before shipment, this air conditioner is filled with the rated
amount of refrigerant subject to 10m piping length. (The
rated amount of refrigerant is indicated on the name plate.)
But when the piping length exceeds 10m, additional charge
is required according to the following table.
For other pipe length of other installation multiply
by the following correction factor to determine the
revised cooling capacity.
(Heating)
Outer diameter of gas
side pipe mm (inch)
6.35 (1/4)
12.7 (1/2)
15.88 (5/8)
19.05 (3/4)
Model
2.0 & 2.5HP
3~6HP
Example :
CS-A18BD3P
In case of 10 m long pipe (one-way), the
amount of refrigerant to be replenished is:
(10 - 10) x 20 = 0g
CS-A43BD3P
In case of 50m long pipe (one-way), the
amount of refrigerant to be replenished is:
(50 - 30) x 50 = 1,000g
26
ELE
0.18
0.20
0.25
0.35
Ref. Charge
20g per 1m
50g per 1m