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G)
REFRIGERANT RECOVERY)
[Working procedure]
Fig, I
n oar
:e;,
t::::
u
=ni::::::::71
Liq,
stop valve
1. Recovery retaining oil in existing pipe Approx. 1 min
Close gas stop valve (liquid stop valve: open)
I
®>
and recovery refrigerant from gas stop valve port.(Fig.1)
2. Recovery retaining oil in existing liquid pipe Approx. 1 min
Recovery refrigerant from liquid stop valve port. (Fig.2)
3. Recovery refrigerant in outdoor unit Approx. 2-3 min
Recovery refrigerant from outdoor unit refrigerant recovery port *
1
.(Fig.3)
NOTE 1 Can be omit this procedure if there is no refrigerant recovery port
4. Recovery refrigerant in accordance with Fluorocarbons Recovery and
Destructive Law
Fig, 2
n oo r
il
Uni
-,
't:::::::=::::':::7
Liq,
stop nlve
If refrigerant recovery port *
2
pressure become lower than gas stop valve
port pressure, refrigerant will recover at the simultaneous from the gas
I
®>
stop valve port, open gas stop valve (Fig.3-1 ) gradually to avoid from pressure
rising rapidly. (Fig.3-2 )
NOTE 1 Can be omit this procedure if there has no refrigerant recovery port
simultaneously if there has no refrigerant recovery port.
Fi 9, 3
Retaining oil recovery amount improved
approx. 5 times from regular refrigerant
recovery method
(pipe length, height difference, pipe path etc. is difference by installation condition)
ABOUT FLARE PROCESSING
I
n oo r
Uni
Liq,
atop nlve
• Flare connection area of existed piping will cause
processing deterioration, make sure to do newly
re-processing.
• Please use flare nut which attached with product
(Do not use existed flare nut)
■ Flare processing
[Unit: mm]
{D=
Piping
outside
diameter
¢ 9.5
r/i
15.9
A(+0,-0.4)
For R32
13.2
19.7
■ Flare nut
[Unit: mm]
Piping
outside
diameter
\ll 9.5
r/i
15.9
B (+O ,-0.6)
For R32
22
29
Pressure guage
Ref. recovery
llil.Chine
Ref. recovery
llil.Chlne
Presaure guage
Tank
Tank
Ref. recovery
Tank
lli!IChlne
( ______
R _E_FR_ I_G_ER_ A_N_T _P_IP_E_S_IZ_E_ T_A _BL_ E
___ )
Outdoor Unit
Existing pipe size
9.5/15.9
Height
Design pressure
difference
(High pressure)
Standard pipe length
7.5m
RZA24AVMK 9.5/15.9
Max. pipe length
50m
Max 30m
4.15 MPa
RZA30AVMK
Chargeless pipe length
30m
• Refer to the installation manual for details other than those mentioned above table such as additional refrigerant charge amount.
■
Clean the existing piping if it length is exceed 30m.
■
Clean the existing pipe if chargeless length is exceed limit of existing pipe pump down refrigerant recovery.
■
Standard pipe (R32)
Pipe size (mm)
r/i 9.5
r/i15.9
Thickness (mm)
t 0.8
t 1.0
39
RZA1
25
AV16
RZA140AV16
Summary of Contents for FDMA125AV16
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