Toshiba RAV-SM1603AT-E Manuel D'installation page 14

Digital Inverter
1. Do not put the spanner on the cap or cover.
The valve may be broken.
2. If applying excessive torque, the nut may
be broken according to some installation
conditions.
• After the installation work, be sure to check gas
leak of connecting part of the pipes with nitrogen.
Refrigerant Pipe Length
Single
Allowable pipe
length (m)
Total length
Simultaneous twin, triple
System
TWIN
TRIPLE
Figure of Single
Indoor Unit
Outdoor Unit
13-EN
CAUTION
NO GOOD
Cover
Cap
Height difference (Indoor-outdoor H) (m) Pipe diameter (mm)
L Indoor unit: Upper
50 30
Allowable pipe length (m)
Total Distributed Distributed
length pipes pipes
• + • • • –
1 2 2 4 3
• + • • –
1 3 3 4
• + Maximum • –
1 4 4
Maximum Maximum
50 15 10
50 15 10
Figure of Simultaneous twin
Indoor Unit
Outdoor Unit
• Pressure of R410A is higher than that of R22
(Approx. 1.6 times).
Therefore, using a torque wrench, tighten the
flare pipe connecting sections which connect
the indoor/outdoor units at the specified
tightening torque.
Incomplete connections may cause not only a
gas leak, but also a trouble of the refrigeration
cycle.
Do not apply refrigerating machine oil to the
flared surface.
Outdoor unit: Lower Gas side
30
Height difference (m)
Indoor-outdoor H Indoor-
indoor
Indoor Outdoor
( h)
2
unit: unit:
3
Upper Upper
2
30 30 0.5
30 30 0.5
Indoor Unit
Outdoor Unit
Distributor
2 3
1
– 13 –
Outdoor Unit Installation Manual
Number of bent
portions
Liquid side
Ø15.9 Ø9.5
Pipe diameter (mm)
Main pipe Branching pipe
Gas side Liquid Gas side Liquid
side
Ø15.9 Ø9.5 Ø15.9
Ø15.9 Ø9.5 Ø12.7
Figure of Simultaneous triple
Indoor Unit
Indoor Unit
4
2
Distributor
1
10 or less
Number of
bent
portions
side
Ø9.5 10 or less
Ø6.4 10 or less
Indoor Unit
3