Hitachi RAS/C-L40GHZ User manual

Model:RAS/C-L40GHZ
Split Floor Type Air-Conditioner

Content
8
W
Schematic Diagram
Back cover

0.4 0.45 5
Waring: The indoor unit cannot be installed outside, otherwise
there maybe electric shocking or leaking due to lack of
waterproof design.
Do not open the packing until the unit has been delivered to the installation site.
1
4x10
A
A
B
B
4x10

A
The operating noise shouldn’t influence the neighbors.
The air vented from outdoor unit shouldn’t influence the
(M10)
950
640
440
420
390
12
19.05 1.0 9.52 0.7
φφ
φ
2
!

When the outdoor unit is highter than the one indoor, the copperpipe must be bent
to “oil recover bend”as shown in figure 8.
8
Insulated gapping bush Fastening strip
Insulated bush for
connecting pipe
3

▪Spread out the pipe part by part and do not pull with strength to avoid damage, .
▪Bind the two cooper pipes or together with various connecting wires with
insulated plastic tape.
▪Bending of the flexible pipe
The bending shouldn’t exceed 90
Try to bend from the middle of pipe and with a bending radius as large as
possible.
▪Apply slight freezing lubricant on the single opening screw thread ball valve,
screw thread as well as the flare part of copper pipe to avoid the damage
and enhance the sealing property.
▪Fasten it with two pieces of spanners as shown in figure 10.
▪Fastening torque see table 2:
▪Make sure that the two block valves on the outdoor unit have been totally
closed.
▪Connect the vacuum pump to the inspecting opening of liquid pipe block
valve and start the vacuum pump to exhaust the air in the connecting pipe,
and indoor unit until the vacuum degree of pressure is reduced to mmHg756
( 20 ).more than minutes
▪Open the block valve of gas pipe.
▪Open the block valve of liquid pipe.
▪Turn on the air conditioner for operation.
▪Perform a leak checking with soap water or relative instrument in connection
areas of single opening and copper or block valve and copper to make sure
there is no leaking.
φ9.52 40
φ19.05 100
Table 2
5 Procedures for refrigerant piping connection
Fastening torque N m( )▪
Figure 10
Outer diameter of
copper pipe mm( )
Spread out the
connecting pipe
Bind the
connecting pipe
Bend the
connecting pipe
Connection
Vacuum exhaust
Operate
Leak check
4

1. ,According to the specific situation the indoor and outdoor connecting pipe can pass through the
corresponding pipe hole in the left right or back panel of the indoor unit The pipe hole must be, .
equipped with protection ring.
2. ,Please remove the maintenance panel of indoor unit before connecting the indoor and outdoor pipe
see ndoor wiring for details" .i "
Installation for indoor draining pipe
(1) (Connect the draining pipe the attached indoor draining pipe can
be used with the water outlet) .
(2) The draining pipe should be inclining from inside to outside to
facilitate the draining of condensed water.
(3) Please apply the attached adhesive to the connecting area of
draining pipe to avoid leaking see figure, 11.
(4) ,Depending on the actual situation the piping can pass through the
hole of either the back left or right panel when installing, .
(5) Check the draining pipe installed as per requirement to make sure
that it works efficiently.
1 Inspection before wiring
(1) ( , , , .)Check whether the electrical part master power switch fuse wire terminal etc is in line with the requirement
on the nameplate of unit.
(2) Check and make sure that the difference between supply voltage and rated voltage is within of rated
voltage.
2 Apply the separate power supply with separate circuit breaker see figure, 12.
3 The earthing should be safe reliable and correct, .
4 Refer to table for details of electrical parameters3 .
Installation for Draining Pipe
Note:
Adhesive
Draining pipe
Figure 11
Figure 12
Power supply for
indoor unit
Power supply for
outdoor unit
Earthing
Indoor
unit
Connecting wire for
indoor outdoor unit/
Master switch/
fuse installed by(
customer)
Power
supply
Outdoor unit
Power
supply
5
Breaker Breaker
Wiring
10%

Indoor Unit Single phase
Outdoor Unit Triple phase
Indoor Unit 220
Outdoor Unit 380
50
Indoor unit 10
Outdoor unit 30
Cord specifications flexible cord
Section mm21.5/ 3piece Totally pieces
Cord specifications flexible cord
Section mm22.0/ 4piece Totally pieces
Section mm21.5
Cord specifications flexible cord
Section mm21.0/ 4piece Totally pieces
Note: The outdoor power cord should meet the min requirement of chloroprene rubber.
sheathed flexible cord cord in IEC Hitachi will assume no responsibility for( 57 245).
any accidents incurred from the unconformity of power cord.
3.Table Electrical Parameters
Power
supply
Phase
Rated voltage V( ~)
Frequency Hz( )
Capacity for breaker ( )A
Wiring
Power cord for
indoor unit
Power cord for
outdoor unit
Connecting wire for
indoor outdoor signal/
earth cord
!
Specification Model
5 Indoor wiring
(1) :Remove the lower maintenance panel of indoor unit Remove the two screws in the lower side of
(2) , 13.Wiring according to the electrical diagram as shown in figure
Hole protection ring
nearby the piping
Round rubber wiring
protection coil
Figure for wiring reference only13 ( )
Cover strip for power cord
Terminal board L N, , , 1, 2 ,3
: " " ;Note the necessary earthing wire Make sure that the power cord has been
fixed with the cover strip as shown in the figure Cover back the plastic strip;
to the terminal board after wiring.
6
RAS/C-L40GHZ
,4
panel and then pull out the panel downward.
maintenance

6 Outdoor wiring
1The outdoor unit has been infused with refrigerant before delivery and more,
refrigerant need to be infused only when the connecting pipe is longer than m20 .
2 Quantity for refrigerant infusing g refrigerant for every m added The longest: 1 .
piping for this unit is m40 .
(1) " 756 .Perform according to rocedures for refrigerant piping connection” until the vacuum is higher than mmHgP
(2) .Open the block valve of gas pipe
(3) " .Slightly open the liquid pipe block valve and set the controlling switch at ooling” to operate the compressorC
(4) Connect the opening of steel refrigerant bottle to the checking point of liquid block valve and then infuse proper
refrigerant.
(5) .The liquid pipe block valve must be opened after infusing the refrigerant
Refrigerant Infusing
Note: 1.Place scale the infused refrigerant carefully since accidents will be incurred with either too more
or too less refrigerant infused.
2. .There should be no air permeated into the pipe when infusing the refrigerant
Attention: Please verify that it is the null line that connects with the N port of the terminal board.
Do not connect the power cord to the terminal on the terminal board of indoor outdoor1, 2, 4 /
unit the necessary earthing wire Make sure that the power cord has been fixed with the. " " ;
cover strip as shown in the figure Cover back the plastic strip to the terminal board after;
wiring.
!Note:
Wire clamp
Yellow/green
(for earthing)
RL/1 SL/2 T L/3 MPN/
1 2 3 4
1 2 3 4
1
2 3
4
Connecting wire for
indoor outdoor signal/
Power cord for
outdoor unit
1 2 3 4
1 2 3
4
1
2
3
4
R L/ 1 S L/ 2 T L/ 3
MP N/
R L/ 1 S L/ 2 T L/ 3 MP N/
1
2
3
4
(1)
· ).
(2) ,
, . 14.
(3)
" " / .
Join the connecting cable correctly according to the wiring diagram.
(Tightening torque 0.8~1.5N m
The connecting cables are pressed by wire clamp and then fixed with
screws as shown in Fig
The earthing wire must be connected to the terminal block marked with
through yellow green lead among the connecting cables
Figure for wiring reference only14 ( )
7
.
3 Procedures for refrigerant infusing:
55

8
Insulated plastic strip
Accessory
No Name. Quantity Use
Anti inclining plate-
Anti falling plate-
Tapping screw ST x4 25
Tapping screw ST x4 10
Washer x x18 5 1φ φ
Pipe cover for the hole of wall
Draining pipe for indoor unit x25 2000φ
Plug for outdoor drain hole
Adhesive
Insulated gapping bush
Nylon fastening strip
Rubber ring for wiring hole
Insulated tape
Hole protection ring nearby the piping
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
8
4
8
1
1
1
1
2
6
2
1
1
Installed on the top of indoor unit
Do not tilt during the installation of the indoor
unit.
Install on the hole of wall
Connect with the indoor draining outlet
For the place where the draining pipe and
indoor unit are connected
For piping installation
Power wiring
Installed on the piping hole
Weep hole in the chassis of the outdoor unit
1
1
The length of connecting copper pipe
is five meters,user purchases as the
case may be.
Connecting pipe 9.52(including nozzle,
insert, heating cover and transitional joint)
φ
Connecting pipe 19.05 including nozzle,
insert, heating cover and transitional joint
φ(
)
17
Insulated gapping bush
nylon fastening strip
2
6
1
18
19
For wrapping all the connecting
area of flare pipe

9
Schematic Diagram
Refrigerant orientation(cooling)
Refrigerant orientation(heating)
Temperature Sensor
Pressure Sensor
Capillary
Compressor
3/8” ball valve
3/4” ball valve
Indoor side Outdoor side
Working Schematic Diagram of Refrigerant
Gas
divider
Pressure valve
Checkvalve
Checkvalve Checkvalve

Do not operate the air conditioner with any function when perform the following checks.
(1) 2 . ,Check whether the terminal resistor of ground and power cord is above M If not do not operate the air
conditioner with any function until the problem is found and solved.
(2) / .Check whether the ball valve of indoor outdoor unit has been fully opened Operate the air conditioner only
after the valve has been fully opened.
Pay :attention to the following during operation of the air conditioner
(1) .Do not touch any part of the ventilating panel Since the temperature of compressor compartment and piping
on the ventilating panel will exceed 90℃.
(2) . .Do not press the electromagnetic contact switch Otherwise severe accidents will be incurred
When the figure of the low pressure meter of the refrigeration system is below Pa the compressor0 ,
should not run more than seconds or damage will be committed50 .
warning
!
RA /C-L40GHZ-SM2/001(201 . .)4 11S
Ω