Piping Connections - Panasonic CS-A24BB4P Service Manual

• • The indoor units will not run for approximatel y 1 minute
while automatic twin/triple address resetting is being carried
out.

20.2. Piping connections

• • The following table shows the pipe diameters for a twin-type system.
Outdoor unit main pipe diameter (mm)
Liquid side:
Gas side:
Liquid side:
Gas side:
Liquid side:
Gas side:
Liquid side:
Gas side:
• • The following table shows the pipe diameters for a triple-type system.
Outdoor unit main pipe diameter (mm)
Liquid side:
Gas side:
• • The following table shows the equivalent pipe lengths and height differences for twin- and triple-type systems.
Equivalent length
Branch pipe diameter
Branch pipe difference
Height difference
Note:
1. Use the main pipe to gain any rise or fall required for the pipes.
2. The number of bends should be 8 or less in a single system (L + la, L + lb, L + lc), and 15 or less overall.
3. Branch pipes should be position horizontally.
• • The branch pipe shoud be horizontal to or perpendicula r to the indoor unit.
3HP Indoor unit capacity (HP)
ø 9.52 Branch pipe
diameter
ø 15.88
4HP Indoor unit capacity (HP)
ø 9.52 Branch pipe
diameter
ø 19.05
5HP Indoor unit capacity (HP)
ø 9.52 Branch pipe
diameter
ø 19.05
6HP Indoor unit capacity (HP)
ø 9.52 Branch pipe
diameter
ø 19.05
6HP Indoor unit capacity (HP)
ø 9.52 Branch pipe
diameter
ø 19.05
H1 Within 30 m
• • Do not turn off the power supply for at least 1 minute after
automatic twin/triple address resetting has been carried out.
1.5
Liquid side ø 6.35
Gas side ø 12.7
2.0
Liquid side ø 6.35
Gas side ø 12.7
2.5
Liquid side ø 6.35
Gas side ø 15.88
3.0
Liquid side ø 9.52
Gas side ø 15.88
2.0 2.0
Liquid side ø 6.35 ø 6.35
Gas side ø 12.7 ø 12.7
L + la + lb + lc
la, lb, (lc)
la - lb, lb - (lc), la - (lc)
Height difference between indoor units
77
Indoor unit combinations
1.5
ø 6.35
ø 12.7
2.0 1.5
ø 6.35 ø 6.35
ø 12.7 ø 12.7
2.5 2.0
ø 6.35 ø 6.35
ø 15.88 ø 12.7
3.0 2.0
ø 9.52 ø 6.35
ø 15.88 ø 12.7
Indoor unit combinations
2.0 1.5 1.5
ø 6.35 ø 6.35 ø 6.35
ø 12.7 ø 12.7 ø 12.7 ø 15.88
Within 50 m
Within 15 m
Within 10 m
H2 Within 1 m
CASSETTE TYPE
2.5
ø 6.35
ø 15.88
3.0
ø 9.52
ø 15.88
4.0
ø 9.52
ø 19.05
3.0
ø 9.52