Panasonic S-3650PU3E Technical Data & Service Manual page 158

1
Check of Density Limit
1. Outdoor
The refrigerant (R32), which is used in the air conditioner, is a fl ammable refrigerant.
So the requirements for installation space of appliance are determined according to the refrigerant charge amount (m
The minimum indoor fl oor space compared with the amount of refrigerant is roughly as follows:
40
35
30
25
20
15
10
5
0
0 0.5
[m ] : the refrigerant charge
c
amount ( )
Installation height of Indoor Unit: hinst
hinst ≥ 2.2 m
1.8 m ≤ hinst < 2.2 m
hinst < 1.8 m
U-36PZ3E5
m ( )
max
m : The refrigerant charge amount (Total of refrigerant at shipment and refrigerant charge amount in the fi eld).
c
• Please calculate m
< Calculating example >
(conditions : U-71PZ3E5
1 : Refrigerant charged at shipment
4 : Total pipe length
m : The maximum refrigerant charge amount
max
1 1.5
1.22
Table 1-11-2-1-1
Indoor Unit Type
4-Way Cassette
Low Silhouette Ducted
Low Silhouette Ducted
Low Silhouette Ducted
U-50PZ3E5
0.95 1.33
according to piping length in the fi eld as shown in the calculation example below.
c
• Refer to table "Specifi cation for pipe connecting indoor unit to outdoor unit.".
Total pipe length = 40 m)
m = 1 + 2 = 1 + ( 3
c
• If the total piping length is within the maximum value of the charge-less piping length, refrigerant charge in
the fi eld is unnecessary.
6
5
Line 3
4
3
2
1
0
2 2.5
[m ] : the refrigerant charge
c
1.83
amount (
Density Limit Line
Line 1
Line 2
Line 3
U-60PZ3E5 U-71PZ3E5
1.49 1.83
( 4 – 5 )) = 1.32 + (0.017
2 : Refrigerant charge amount in the fi eld
5 : Charge-less pipe length(max.)
1-11-2-1-7
) used in the appliance.
c
0 0.5 1 1.5
1.22 1.83
)
m ≤1.22 : Can be installed
c
1.22 < m ≤ m : Can be installed above
c max
"Density Limit Line" *1
*1 See "Density Limit
Line" in Table 1-11-2-1-1
and Fig. 1-11-2-1-1,
Fig. 1-11-2-1-2 of indoor
unit.
m > m : Cannot be installed
c max
(40 m – 10 m)) = 1.83
3 : Additional charge per 1m
Line 2
Line 1
2 2.5