PIPE CONNECTION
ENGLISH
23
Pipe length and the elevation
PIPE CONNECTION
• Single Operation
If installed tube is shorter than 15 m, addition-
al charging is not necessary.
Additional Refrigerant
= (A-15) x Additional refrigerant (g)
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
Model
Pipe Size mm(inch)
Length A(m)
Elevation B(m)
Additional
refrigerant
(g/m)
Gas
Liquid
Standard
Max.
Standard
Max.
B62AWYU7L6
B70AWYU7L6
Ø22.2(7/8) Ø12.7(1/2)
15
75
5
30
70
WARNING
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following equation for human safety.
If the above equation can not be satisfied, then follow the following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2 m from the floor (Wall mounted type
→
Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation system
• Limitation in piping work
: Prepare for earthquake and thermal stress
Total amount of refrigerant in the system
≤
0.44 (kg / m
3
)
Volume of the room at which Indoor Unit of the least capacity is installed
!
Summary of Contents for 62AWYU7L6
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