Hitachi RAS-3HVRNM2, Инструкция по установке и обслуживанию, Страница: 49 / 58

TC-12001 2-121
OUTDOOR UNIT
P5414950-rev.1 45
O
At the test run, fully open the spindle.
If not fully opened, the devices will be damaged.
O
An excess or a shortage of refrigerant is the
main cause of trouble to the units.
Charge the correct refrigerant quantity according
to the description of label at the inside of the
service cover.
O
Check for refrigerant leakage in detail. If a
large refrigerant leakage occurs, it will cause
GLI¿FXOW\ZLWKEUHDWKLQJRUKDUPIXOJDVHV
ZRXOGRFFXULI¿UHZDVEHLQJXVHGLQWKH
room.
O
0D[LPXP3HUPLVVLEOH&RQFHQWU)&
GAS R410A
(1)
7KHUHIULJHUDQW5$LVDQLQFRPEXVWLEOH
and non-toxic gas.
+RZHYHULIOHDNDJHRFFXUVDQGJDV¿OOVD
room, it may cause suffocation.
The maximum permissible concentration
RI+)&JDV5$LQDLULVNJP
3
,
according to the refrigeration and air
FRQGLWLRQLQJIDFLOLW\VW.6
E\WKH.+.+LJK3UHVVXUH*DV
3URWHFWLRQ$VVRFLDWLRQ-DSDQ7KHUHIRUH
VRPHHIIHFWLYHPHDVXUHPXVWEHWDNHQ
to lower the R410A concentration in air
EHORZNJP
3
in case of leakage.
As for R410A, this consideration is
applied similarly.
(2) Calculation of Refrigerant Concentration
(A)
&DOFXODWHWKHWRWDOTXDQWLW\RI
refrigerant R (kg) charged in the
system connecting all the indoor units
RIREMHFWLYHURRPV
(B)
&DOFXODWHWKHURRPVSDFHZKHUHWKLV
XQLWLVWREHLQVWDOOHG9P
3
) of each
REMHFWLYHURRP
(C) Calculate the refrigerant concentration
&NJP
3
RIWKHURRPDFFRUGLQJWRWKH
following equation.
If local codes or regulations are
VSHFL¿HGIROORZWKHP
<Example>
%ULWLVK6WDQGDUG%6
&RPPHUFLDO2I¿FH
%XLOGLQJ&ODVV'2FFXSDQF\
& NJP
3
)
= C: Refrigerant
Concentration
<
NJP
3
)
95RRP6SDFH:KHUH7KLV
8QLW,VWR%H,QVWDOOHGP
3
)
57RWDO4XDQWLW\RI&KDUJHG
Refrigerant (kg)
O
The DC INVERTER UTOPIA is used the
refrigerant R410A.
(1)
,WLVSURKLELWHGWRHPLWÀXRURFDUERQVWRWKH
atmosphere without permission.
(2) The refrigerant must be collected when
disposed or some refrigerant cycle
component replaced of the unit.
(3) The variety and the quantity of refrigerant
DUHPHQWLRQHGLQWKHVSHFL¿FDWLRQDQGWKH
refrigerant label (Caution Label). After the
refrigerant charge work is completed, record
the total refrigerant quantity*.
*Total Refrigerant Quantity =
Refrigerant Charge Quantity Before
Sh Additional Refrigerant Charge
Quantity at Field
O
Dip Switch Setting
The dip switch of DSW2 is required according
to the piping length as shown below.
ON
2 1
ON
2 1 1 6 2 5
ON
3 4
1 6 2 5
ON
3 4 1 6 2 5
ON
3 4
0
9
8
7 6 5 4
3
2
1
1
ON
2 4 3
Before Shipment
* Mark of “ ” in the above indicates the position of dip switches.
* No.3 to 6 pins are for the other functions.
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
PCB
LED3
LED2
DSW5
SEG1
PSW1 PSW2 PSW3 DSW6 DSW3 DSW1
DSW2 DSW4 RSW1 SW1
LED1
DSW2
ON ON ON
JP1 to JP6
Piping Length < 5m Piping Length > 30m
7XUQ2))DOOWKHSRZHUVXSSO\RIWKH
outdoor unit and indoor unit before Dip
Switch setting. If not, the setting is
invalid.