Hitachi RAS 35YH6 User Manual

THE CHOICE OF MOUNTING SITE(Please note the following matters and obtain permission from customer before installation.)  
FOR SERVICE PERSONNEL ONLY  
WARNING  
WARNING  
The unit should be mounted at stable, non-vibratory location  
which can provide full support to the unit.  
The Outdoor unit must be mounted at a location which can  
support heavy weight. Otherwise, noise and vibration will  
increase.  
CAUTION  
No nearby heat source and no obstruction near the air  
CAUTION  
Do not expose the unit under direct sunshine or rain.  
Besides, ventilation must be good and clear of obstruction.  
The air blown out of the unit should not point directly to  
animals or plants.  
outlet is allowed.  
The clearance distances from top, right and left are  
specified in figure below.  
The location must be convenient for water drainage and  
pipe connection with the Outdoor unit.  
To avoid interference from noise, please place the unit and  
its remote controller at least 1m from the radio and  
television.  
To avoid any error in signal transmission from the remote  
controller, please put the controller far away from high-  
frequency machines and high-power wireless systems.  
The clearances of the unit from top, left, right and front are  
specified in figure below. At least two of the above sides  
must be open air.  
The installation height should be at least 2,300 mm or more  
from the floor.  
Be sure that the hot air blown out of the unit and noise do  
not disturb the neighbourhood.  
Do not install at a location where there is flammable gas,  
steam, oil and smoke.  
SAFETY PRECAUTION  
The location must be convenient for water drainage.  
Place the Outdoor unit and its connecting cord at least 1 m  
away from the antenna or signal line of television, radio or  
telephone. This is to avoid noise interference.  
• Read the safety precautions carefully before operating the unit.  
Names of Indoor Components  
• The contents of this section are vital to ensure safety. Please pay special attention to the following sign.  
WARNING .......... Incorrect methods of installation may cause death or serious injury.  
CAUTION .......... Improper installation may result in serious consequence.  
Make sure to connect earth line.  
The Length of Indoor Unit  
Connecting Cord  
No.  
Item  
Qty  
Hanger  
above  
0.9 m  
above  
1.6 m  
1
1
This sign in the figures indicates prohibition.  
Be sure that the unit operates in proper condition after installation. Explain to customer the proper operation and maintenance of  
the unit as described in the user' s guide. Ask a customer to keep this installation manual together with the instruction manual.  
Figure showing the Installation  
of Indoor and Outdoor Unit.  
Screw for Hanger  
When the power is  
supplied from the  
indoor unit, pull the  
power cable from the  
cable drawer at the  
right or left side of  
the indoor unit.  
2
6
above  
50mm  
WARNING  
(4.1 x 32)  
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you do the  
installation work yourself.  
Please observe the installation stated in the installation manual during the process of installation. Improper installation may cause  
water leakage, electric shock and fire.  
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the units may  
collapse and impose danger.  
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing  
with the electrical work. Use cables which are approved official in your country. Be sure to use the specified circuit. A short circuit and  
fire may occur due to the use of low quality wire or improper work.  
Be sure to use the specified cables for connecting the indoor and outdoor units. Please ensure that the connections are tight after the  
conductors of the wire are inserted into the terminals to prevent the external force is being applied to the connection section of the  
terminal base. Improper insertion and loose contact may cause over-heating and fire.  
Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or  
stronger vibration may occur.  
Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.  
When installing or transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R410A)  
does not enter the refrigeration cycle. If other air should enter, the pressure level of the refrigeration cycle may increase abnormally  
which could result in a rupture and injury.  
Holder for Remote  
Controller  
2
1
above 50mm  
above 50mm  
3
4
5
1
2
2
Cable drawer (right side)  
Be sure to  
completely  
seal any gap  
with putty.  
AAA size Battery  
Direction of Piping  
Backward piping  
from left  
2,300 mm or more  
Screw for holder of  
Remote Controller  
Used in  
6
Connection  
(3.1 x 16)  
horizontal piping  
There are 6 directions allowed,  
namely, backward piping,  
backward piping from left,  
horizontally piping from right,  
horizontally piping from left,  
vertically down from right, vertically  
down from left.  
Holder  
6
7
8
9
1
1
1
1
7
4
5
Remote Controller  
Insulation sheet  
Bush  
3
Plug (Procure locally)  
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous gas may  
occur.  
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into the  
room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.  
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner  
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.  
Be sure to connect the earth line from the power supply wire to the outdoor unit and between  
the outdoor and indoor unit. Do not connect the earth line to the gas tube, water pipe, lighting rod or the earth line of the  
telephone unit. Improper earthing may cause electric shocks.  
Dimension of Mounting  
Stand of the Outdoor unit  
(unit : mm)  
The indoor piping should be  
insulated with the enclosed  
insulation pipe. (If the insulator is  
insufficient, please use commercial  
products.)  
50  
Mounting  
Stand  
The refrigerating machine oil is  
easily affected by moisture. Use  
caution to prevent water from  
entering the cycle.  
12  
35  
500  
125  
When finishing the refrigerant collection (pumping down), stop the compressor and then remove the coolant pipe.  
If you remove the refrigerant pipe while the compressor is operating and the service valve is released, air is sucked and a  
pressure in the freezing cycle system will build up steeply, causing an explosion or injury.  
When installing the unit, be sure to install the refrigerant pipe before starting the compressor.  
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and the  
pressure level of the refrigeration cycle may increase abnormally which could result in a rupture and injury.  
The difference in height between  
the indoor and outdoor unit  
should be kept below 10m.  
The connecting pipe, no matter  
big or small, should all be  
insulated with insulation pipe and  
then wrapped with vinyl tape.  
(The insulator will deteriorate if  
it is not wrapped with tape).  
above 200mm  
Drain Pipe  
above 50 mm when  
installed on the  
ceiling of balcony  
0
1
above 50mm  
give clearance  
as wide as  
possible  
Switch Cover  
Purifying Filter  
CAUTION  
A
B
1
1
A circuit breaker must be installed in the house distribution box for the direct connected power supply cables to the  
outdoor unit. In case of other installations a main switch with a contact gap or more than 3mm has to be installed.  
Without a circuit breaker, the danger of electric shock exists.  
Do not install the unit near a location where there is flammable gas. The outdoor unit may catch fire  
if flammable gas leaks around it.  
above  
200mm  
The connection of insulated drain  
hose.  
above 100mm  
above 300mm  
Inner diameter 16mm  
Please use insulated drain hose for  
the indoor piping (commercial  
product)  
The components of 9 & 0 are included  
in the package of the outdoor unit.  
Please ensure smooth flow of water when installing the drain hose. Improper installing may wet your funiture.  
An IEC approved power cord should be used. Power cord type: NYM.  
INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES  
2
Installation Of The Indoor Unit  
1
Installation of Hanger, Wall Penetration and Installation of Protection Pipe  
• The refrigerating pipe should be adjusted to fit into  
Drain hose  
Cutting Low Cover bush  
the hole on the wall and then ready for further  
CAUTION  
• While installing the pipe from the right, left or  
bottom side, use a knife to cut openings as  
shown in figure. Then smoothen the edges of  
openings with a file.  
connection.  
• The terminals of 2 connected pipes must be covered  
The draining of the water container inside the Indoor unit can be done from the left.  
Therefore the hanger must be fixed horizontally or slightly tilted towards the side of  
drain hose. Otherwise, condensed water may overflow the water container.  
Connecting  
cord  
with insulator used for terminal connection. Then the  
pipes are wrapped with insulation pipe.  
• Connect the connecting cord after removing low  
cover.  
Openings  
Pipe  
Direct Mounting On The Wall  
• Please use hidden beams in the wall to hold the hanger.  
(Refer to "CONNECTION OF POWER CORD")  
• After adjustment, fit the connecting cord and pipes  
into the space available under the unit. Use holder to  
hold them tight.  
• Holder can be attached at the either of 2 places.  
Please select the easier position.  
Openings  
Visible outline of the  
450mm  
¡
Preparation  
PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)  
400mm  
outdoor unit  
316mm  
20mm  
125mm  
41mm  
125mm  
44mm  
Insulation pipe (must be wrapped withHolder  
vinyl tape at every 120 mm)  
• Connect connecting cord.  
• Pull out the pipe, connecting cord and drain hose.  
Wall hole  
Installation  
THE CONNECTION OF REFRIGERATING PIPE DURING  
42mm  
45mm  
Connecting cords, pipe and  
drain hose must be laid  
together with Vinyl tape.  
• Insert the pipe through the wall hole.  
¡ The upper part of the Indoor unit is hanged on the  
hanger.  
The projection at the lower part of the Indoor unit is  
hooked onto the hanger.  
THE INSTALLATION OF INDOOR UNIT  
45mm  
ø65mm  
The end of the refrigerating pipes are at  
390mm  
530mm  
780mm  
ø65mm  
Drain Hose  
65mm  
10mm  
Preparation To Install Refrigerating Pipes  
• The refrigerating pipes and connecting cord  
transform and are attached.  
Drain Hose  
locations marked with “M” symbol.  
Wall hole  
Level  
2 Screw for Hanger  
Pipe  
1
Hanger  
Drain hose  
Cable  
Screw the hanger at the  
1
Hanger  
1
Hanger  
¡
positions possibly near the  
upper and lower hooks where  
the indoor unit is hung. Use 4 or  
more screws to fix the hanger.  
0.85m  
below  
5mm  
Drain layout of  
backward piping  
Lift the body  
of the unit  
upwards and  
then force it  
downwards.  
Please bend at a small  
radius to form an arc  
Installation  
Refrigerating  
Pipe  
Line  
Weight  
Wall hole  
Hang the indoor unit onto the hanger. Use the temporary stand Projection  
at the back of the Indoor unit to push its lower part 15cm  
forwards.  
• Place the drain hose through the hole on the wall.  
• Wrap the refrigerating pipes with insulation pipe after  
connecting refrigerating pipe.  
• Connect the connecting cord after removing low cover.  
(Refer to "Connection of Power Cord")  
• After adjustment, the connecting cord and refrigerating pipes  
Procedures of Installation and Precautions  
• Procedures to fix the hanger.  
Hook  
Protection  
Pipe  
Connecting Cord  
Drain Hose  
Projection  
1.Drill holes on wall.  
(As shown below)  
2.Push plug into the holes. 3.Fix the hanger on wall with  
Preparation  
PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)  
(As shown below)  
4.1 x 32 screw.  
(As shown in figure below)  
about 15cm  
Wall  
Plug  
(Procure  
locally)  
Changed of Drain Hose and Installation Procedures.  
Exchange the location of drain hose and drain cap while installing the pipe from the left side as  
shown in below. Be sure to plug in the drain hose until the insulating material folds upon itself.  
1 Hanger  
2 Screw  
Ceiling  
are placed into the space available under the Indoor unit.  
• The projection of Indoor unit must hook to the hanger.  
Protection  
pipe  
above 50mm  
Please use pliers to pull out the drain cap.  
(This is an easier way to remove the drain  
cap).  
CAUTION  
Insufficient insert may  
result in water leakage.  
Wall hole  
Drain hose  
32mm  
Refrigerating  
pipe  
Connecting  
cord  
Wall  
Pull this to the front during the  
connection of refrigerating  
pipe to ease task.  
Pipe  
Drain hose  
Cable  
Heat  
insulation pipe  
Connecting cord  
• Procedures to fix the holder of remote control.  
Drain layout of backward piping from left  
4.1 x 32 screw  
Connected  
section  
Holder  
1.Drill holes on wall.  
(As shown below)  
2.Push plug into the holes.  
(As shown below)  
3
Heat Insulation and Finish of the Piping  
Rib at the Indoor unit  
Wall  
• The connected terminals should be completed sealed  
with heat insulator and then tied up with rubber strap.  
• Do not tie the terminals with the tape too tight.  
If any clearance or over-tightening may cause  
condensation.  
• Please tie the pipe and power line together with vinyl  
tape as shown in the figure showing the installation of  
Indoor and Outdoor units.  
Insulation material for pipe  
connection  
Insulating  
section of the  
drain hose end  
Drain cap  
Drain Hose  
3 Remote  
Control  
5 Screw  
Plug  
(Procure locally)  
Remove low cover  
Insert drain cap up to the  
location securely till the  
cap stops.  
Holder  
Push the pipe deeply until the insulating  
section of the drain hose end gets over the  
rib at the indoor unit side.  
Sleeve of  
protection pipe  
20mm  
Putty  
To enhance the heat insulation and to prevent water  
condensation, please cover the outdoor part of the  
drain hose and pipe with insulation pipe.  
Drain cap  
Wall Penetration and Installation of Protection Pipe  
• Drill a ø65mm hole on wall which is  
slightly tilted towards the outdoor side.  
Drill the wall at a small angle.  
• Cut the protection pipe according to the  
wall thickness.  
• Empty gap in the sleeve of protection  
pipe should be completely sealed with  
putty to avoid dripping of rain water into  
the room.  
• Please ensure smooth flow of water  
when installing the drain hose. Improper  
installing may wet your funiture.  
• An IEC approved power cord should be  
used. Power cord type: NYM.  
Indoor  
Outdoor  
2-5mm  
• Completely seal any gap with putty.  
CAUTION  
WARNING  
Putty  
• The rubber strap used for fixing the insulator  
should not be tied with great force. Otherwise,  
this will damage heat insulation and causes  
water condensation.  
• Please pull the lower part of the Indoor unit  
outwards to check if the unit is hooked onto  
the hanger. Improper installation may cause  
vibration and noise.  
Be sure that the wire is not  
in contact with any metal in  
the wall. Please use the  
protection pipe as wire  
passing through the hollow  
part of the wall so as to  
prevent the possibility of  
damaged by mouse.  
Seal with  
putty  
Seal with  
putty  
4
Installation of Drain Hose  
Pipe  
Rubber strap tied  
with great force  
CAUTION  
Be sure that the drain hose is  
not loosely connected bend or  
proper condition like left figure.  
Ditch  
Condensed  
water pond  
Protection  
pipe  
WALL  
Bending upwards  
Condensed water  
pond  
Sleeve of  
protection  
pipe  
Unless it seals completely,  
any air with high humidity  
flows from outdoor and any  
dew may drop.  
• Transform the piping while holding down the  
lower portion of pipe-support by hand.  
Pipe  
You are free to choose the side (left or right) for the installation of drain  
hose. Please ensure the smooth flow of condensed water of the Indoor  
unit during installation. (Careless may result in water leakage.)  
Transform after  
bending downward.  
support  
CAUTION  
06K108_RAS-35_YH6_English.p65  
1
11/13/06, 3:02 PM  

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