Hitachi RAS-5HVRNM2 - Page 49

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\ZLWKEUHDWKLQJRUKDUPIXOJDVHV
ZRXOGRFFXULI¿UHZDVEHLQJXVHGLQWKH
room.
O
0D[LPXP3HUPLVVLEOH&RQFHQWUDWLRQRI+)&
GAS R410A
(1) 7KHUHIULJHUDQW5$LVDQLQFRPEXVWLEOH
and non-toxic gas.
+RZHYHULIOHDNDJHRFFXUVDQGJDV¿OOVD
room, it may cause suffocation.
The maximum permissible concentration
RI+)&JDV5$LQDLULVNJP
3
,
according to the refrigeration and air
FRQGLWLRQLQJIDFLOLW\VWDQGDUG.+.6
E\WKH.+.+LJK3UHVVXUH*DV
3URWHFWLRQ$VVRFLDWLRQ-DSDQ7KHUHIRUH
VRPHHIIHFWLYHPHDVXUHPXVWEHWDNHQ
to lower the R410A concentration in air
EHORZNJP
3
in case of leakage.
As for R410A, this consideration is
applied similarly.
(2) Calculation of Refrigerant Concentration
(A) &DOFXODWHWKHWRWDOTXDQWLW\RI
refrigerant R (kg) charged in the
system connecting all the indoor units
RIREMHFWLYHURRPV
(B) &DOFXODWHWKHURRPVSDFHZKHUHWKLV
XQLWLVWREHLQVWDOOHG9P
3
) of each
REMHFWLYHURRP
(C) Calculate the refrigerant concentration
&NJP
3
RIWKHURRPDFFRUGLQJWRWKH
following equation.
If local codes or regulations are
VSHFL¿HGIROORZWKHP
<Example>
%ULWLVK6WDQGDUG%6
&RPPHUFLDO2I¿FH
%XLOGLQJ&ODVV'2FFXSDQF\
& NJP
3
)
= C: Refrigerant
Concentration
< NJP
3
)
95RRP6SDFH:KHUH7KLV
8QLW,VWR%H,QVWDOOHGP
3
)
57RWDO4XDQWLW\RI&KDUJHG
Refrigerant (kg)
O
The DC INVERTER UTOPIA is used the
refrigerant R410A.
(1) ,WLVSURKLELWHGWRHPLWÀXRURFDUERQVWRWKH
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
DUHPHQWLRQHGLQWKHVSHFL¿FDWLRQDQGWKH
refrigerant label (Caution Label). After the
refrigerant charge work is completed, record
the total refrigerant quantity*.
*Total Refrigerant Quantity =
Refrigerant Charge Quantity Before
Shipment + 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
21
ON
21 1 62 5
ON
3 4
1 62 5
ON
3 4 1 62 5
ON
3 4
0
9
8
7
6
5
4
3
2
1
1
ON
2 43
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
7XUQ2))DOOWKHSRZHUVXSSO\RIWKH
outdoor unit and indoor unit before Dip
Switch setting. If not, the setting is
invalid.