Installation Manual S-Series

FOR SERVICE PERSONNEL ONLY

EN

Form the refrigerating pipe according to the wall hole position. Especially in the case of horizontally backward piping, follow the instruction below to carry out accurate forming. Forming of refrigerating pipe for horizontally backward piping (1) Refer to the mark at the back, start bending the refrigerating piping within wall hole range.

Horizontally and downward piping from the right Remove the auxiliary insulation material sheet which is attached to the pipe insulation. (Keep the removed auxiliary insulation material sheet because it will be reused after pipe connection.) Carry out refrigerating pipe forming.

Connecting the refrigerating pipe at the back of the indoor unit • Form and set the refrigerating pipe and connecting cord.

Preparation of Pipe Backward piping Remove the auxiliary insulation material sheet which is attached to the pipe insulation. Referring to the mark on the rear side, form the pipe within the wall hole range.

• Carefully read through the procedures of proper installation before starting installation work. • The sales agent should inform customers regarding the correct operation of installation.

INDOOR UNIT / OUTDOOR UNIT HITACHI SPLIT UNIT AIR CONDITIONER INSTALLATION MANUAL

Match the end of the refrigerating pipes with the locations marked with “ V ” symbol.

No nearby heat source and no obstruction near the air outlet is allowed.

Bottom cover bush hole

Pipe

The air blown out of the unit should not point directly to animals or plants.

RAK-25PSB/RAC-25WSB RAK-18PSB/RAC-18WSB RAK-35PSB/RAC-35WSB

Small diameter

Large diameter

Place the starting point of refrigerating pipe bending within the wall hole range.

Please bend at a small radius to form an arc.

Wall hole range

Drain hose

SAFETY PRECAUTION s Read the safety precautions carefully before operating the unit. s 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. 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. WARNING s 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. s Please observe the installation stated in the installation manual during the process of installation. Improper installation may cause water leakage, electric shock and fire. s 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. s 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. s 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. s Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or stronger vibration may occur. s Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults. s 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. s 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. s 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. s 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. s 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. s 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. s 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.

Layout of horizontally piping from the right Temporarily join the refrigerating pipe, drain hose and connecting cord with tape. CAUTION • Transform the piping while holding down the lower portion of pipe-support by hand.

Please bend at a small radius to form an arc.

1.00m

Do not install at a location where there is flammable gas, steam, oil and smoke.

Place the starting point of refrigerating pipe bending within the wall hole range.

If the starting point of refrigerating pipe bending is projected from the wall hole range or if the bending radius is too large, the indoor unit may be lifted from wall and this may cause poor finishing.

Below 5mm

If the starting point of refrigerating pipe bending is projected from the wall hole range or if the bending radius is too large, the indoor unit may be lifted from wall and this may cause poor finishing. (2)When forming, bend the refrigerating pipe with the smallest radius.

The installation height should be at least 2.3m or more from the floor.

Insert a plastic hose (commercial product) into the large diameter pipe.

Please bend at a small radius to form an arc. (Pipe can be bent with a small radius without being crushed if a plastic hose is used.)

Pipe support

Pipe support

Refrigerating pipe Center line of wall hole

No.

Supplied Items

Qty

Figure showing the installation of Indoor and Outdoor Unit (For example: Ground installation)

CAUTION

Mounting board

Above 50mm (Above 100mm when there is piping connection at the back of the outdoor unit)

ø65 wall hole range

ø65 wall hole range

Center line of wall hole

When using a plastic hose, make sure to insert it only after pipe expanding is carried out to avoid cutting dust from getting inside.

Transform after bending downward

36mm 41mm

2

Place the refrigerating pipe bending within the wall hole range

1

Be sure to completely seal any gap with putty.

Above 50mm

Pipe support

Above 50mm

Place the ending point of refrigerating pipe bending within this range.

Drain hose

Screw for mounting board

Auxiliary insulation sheet

Installation after connection of refrigerating pipes (Horizontal piping) Remove the auxiliary insulation material sheet which is attached to the pipe insulation. Connect the refrigerating pipe. (Refer to “Pipe Connection” on page 9) Cut the heat insulation sheet refrigerating pipe aligning to the insulation sheet of the pipe and fix them temporarily with tape. Cover the pipe connection with the auxiliary insulation sheet which was removed earlier, with its split line on the top. Wrap the tape without any gap. Tape must not be over tightened. (Refer to “Heat insulation and Finishing of Piping” on page 11) If there is gap or over-tightened, it may cause condensation.

2.2 Installation Connecting the refrigerating pipe other than at the back of the indoor unit Insert the pipes through the wall hole. Hang the upper part of the i ndoor unit on the mounting board. Push the lower part of the indoor unit to the wall, hook the projection on the lower part of the indoor unit onto the mounting board. Cover the pipe connection with the auxiliary insulation sheet which was removed earlier, with its split line on the top. Wrap the tape without any gap. (Refer to “Heat insulation and Finishing of Piping” on page 11) If there is gap or over-tightened, it may cause condensation.

The space indicated by an arrow Á is to guarantee the performance of the air conditioner. Install the apparatus at the ample space in order to carry out the maintenance and repair works.

Drain hose

Refrigerating pipe

Refrigerating pipe

2.3m or more

AAA size battery

Temporarily join the refrigerating pipe, drain hose and connecting cord together with tape.

Above 80mm

When installing the indoor unit above the curtain rail or curtain box, allow dimensions not affecting the airflow.

Screw for Remote Controller Holder

The indoor piping should be insulated with the enclosed insulation pipe.

Plug

Remote controller

5

@

Temporarily join the refrigerating pipe, drain hose and connecting cord together with tape.

The refrigerating machine oil is easily affected by moisture. Use caution to prevent water from entering the cycle.

4

Anti-mold wasabi cassette

3

Form the connecting cord and refrigerating pipe and put them in the space on the lower side of the rear surface of the indoor unit. Put the binding band on the hook located on the rear surface to fix it. Join refrigerating pipe, connecting cord and drain hose temporarily with tape and wrap the wall hole portion with tape.

5

• 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.

Pipe support

Above 200mm Above 50 mm when installed on the ceiling of balcony

Center line of wall hole

Heat insulating materials

Refrigerating pipe

Above 50mm give clearance as widely as possible

Mounting board

6

ø65 wall hole range

Refrigerating pipe insulation sheet

Bush

Refrigerating pipe

Pipe

Cut

Refrigerating pipe

Place the refrigerating pipe bending within the wall hole range

Above 200mm

Connection of insulated drain hose Please use insulated drain hose for the indoor piping (commercial product).

Auxiliary insulation sheet

Refrigerating pipe

Inner diameter 16mm

Drain pipe

Above 100mm

Drain hose

Above 200mm

Connecting cord

Drain hose

Heating efficiency will be enhanced if the space below the outdoor unit is closed so that no air passes through. (Procure the material locally.)

Remote Controller Holder

Refrigerating pipe insulation sheet

The electric cables should neither be reworked nor added. Make sure to use an exclusive circuit breaker. Otherwise fire or electric shock might occur by connection failure, isolation failure or over current. Make sure to connect cables to terminal properly and terminal cover should close firmly. Otherwise, over heating at terminal contact, fire or electric shock might occur. Make sure that there is no dust on any connected points of electric cables and fix firmly. Otherwise, fire or electric shock might occur. s s s

Wrap the wall hole portion with tape.

Binding band

@

Protection pipe

About 90mm

Connecting cord

Drain hose

Temporarily wrap with tape

For outdoor unit installation, allow at least 2 sides of space around the unit to ensure ventilation flue.

Direction of Piping

Binding band can be installed to whichever side of the installation points. However, it is recommended to attach it on the right side viewing from the rear.

Hook

Wrap with tape

Horizontally backward

Items 8 & 9 are included in the package of the outdoor unit.

Piping configuration may be in six different directions: direct rear piping, left or right downward piping and left or right sideways piping.

Auxiliary insulation sheet

Mounting board

Split line of the auxiliary insulation sheet must be positioned within this range.

CAUTION

Be sure to cut the extra binding band. (Otherwise, it may result in abnormal noise or dewfall.)

Projection of the indoor unit

s 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 of more than 3mm has to be installed. Without a circuit breaker, the danger of electric shock exists. s 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. s Please ensure smooth flow of water when installing the drain hose. Improper installing may wet your funiture. s An IEC approved power cord should be used. Power cord type: NYM.

Wrap with tape

Pipe

1.3 Wall Penetration and Installation of Protection Pipe

Connecting the refrigerating pipe at the back of the indoor unit

How to remove the indoor unit • Push the [PUSH] section at the bottom of the indoor unit from the outside, the claws are released from the mounting board. (2 places on the left and right) • If the bottom of the indoor unit cannot be pushed, remove the bottom part of the front cover and insert a screwdriver into the hole for removal of indoor unit as shown in the figure. Then, push the claws upwards while holding down the upper part of the hole 1 and pull the indoor unit towards you 2 . When horizontal piping is used, be careful not to damage the pipe and connecting cord with the tip of the screwdriver during this operation. • Please refer to “Removing and Attaching the Front Cover” on page 14 to remove the bottom part of the front cover.

WARNING • Protection pipe (commercial product) must be used 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 to prevent damaged by mouse,

Drill a ø65mm hole on wall which is slightly tilted towards the outdoor side. Cut the protection pipe according to thewall thickness and pass through the wall hole. Empty gap in the sleeve of protection pipe should be completely sealed with putty to avoid dripping of rain water into the room.

Indoor

Outdoor

WALL

Remove the auxiliary insulation material sheet which is attached to the pipe insulation. (Keep the removed auxiliary insulation material sheet because it will be reused after pipe connection.) Hang the indoor unit on the mounting board. Projection of the indoor unit

CAUTION Be sure that the drain hose is loosely connected

Cushion

Putty

Putty

bend or proper condition like left figure.

Fixing tab

Condensed water pond

possibility of short circuit or fire. • Completely seal with putty

Bending upwards

above 100mm

About 15cm

High humidity air inside the wall or the outdoor may go in to the room and could result in dripping of dew. It could also cause smell or odor present outdoor and inside the wall spreading into the room.

CAUTION 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.)

Protection pipe

Sleeve of protection pipe

BUSH

DRAIN PIPE Press it into the hole in the chassis

When Using and Installing In Cold Areas

Press it into the hole in the chassis

 

Condensed water pond

Ditch

Place the cushion under the right rear surface of the indoor unit to lift the lower side of the unit by approximately 15cm. Connect the refrigerating pipe. (Refer to “Pipe Connection” on page 9) Cover the pipe connection with the auxiliary insulation sheet which was removed earlier, with its split line on the top. Wrap the tape without any gap. (Refer to “Installation after connection of refrigerating pipes (Horizontal piping)” on page 5, step 3 ) Insert the drain hose into the wall hole. Connect the connecting cord. (Refer to “Connection of Power Cord” on page 10). Form connecting cord and refrigerating pipe and put them in the space on the lower side of the rear surface of the indoor unit. Remove the temporary stand and hook the projection on the lower part of the indoor unit onto the mounting board.

2. Installation of the Indoor Unit 2.1 Preparation of Installation Remove the front panel • To remove front panel, please refer to “Removing and Attaching the Front Panel” on page 13. • Make sure to use both hands to attach and remove the front panel. Remove the lower cover • Push the bottom inner part ( 1 ) of the lower cover to remove the lower cover.

Changing of drain hose (Horizontally piping) • Install and change the drain hose and drain cap when installing the pipe horizontally as shown below. • Remove the lower cover when installing and changing. • Do not carry out horizontal piping for drain hose.

• Please mount the outdoor unit on stable ground to prevent vibration and increase of noise level. • Decide the location for piping after sorting out the different types of pipe available. • When removing side cover, please pull the handle after undoing the hook by pulling it downward. Reinstall the side cover in reverse order of the removal.

Please remove side cover when connecting the piping and connecting cord.

Please face this side (suction side) of the unit to the wall.

Hole for removal

1.1

on s Please use hidden beams in the wall to hold the hanger.

Hold with hand

Mounting board

798mm

Hole for removal

Claw

Dimensions of indoor unit

450mm

Drain cap

Drain hose

450mm

100mm

Pull downward

1

175mm

Use the plier to pull and turn the drain cap for easy removal.

Drain hose

• To attach the lower cover, attach 2 first and then attach 1 by rotating it around 2 as the fulcrum. Remove

Screwdriver

80mm

80mm

600mm

Protection pipe

3. Drainage Check After the indoor unit is installed, please ensure the smooth flow of condensed water of the indoor unit during installation.

Fixed leg dimension of outdoor unit

Drain hose

In snowy region, install a snow guard and elevated stand to ensure the airflow for better heating efficiency. In other regions, it is recommended to install a tent for shade.

2

Drain hose

(Careless work may result in water leakage.)

350mm 638mm

1 Remove the screw and pull out the drain hose. Drain hose screw

Auxiliary insulation sheet

1

Pull this to the front during the connection of refrigerating pipe to ease task.

Tent

CAUTION • During drainage work, install the drain pipe to ensure smooth drainage. Make sure to carry out drainage check. Careless work may result in water leakage. • Make sure that there is no problem as shown in the figures on page 8. Such problems may cause clogged drain and could result in water leakage. • Drain hose must be at a slope of at least 1/25. • When inserting the drain hose into the drain pipe for embedded piping, etc., do not cut the drain hose in the middle. This may lead to poorer heat insulating performance of the drain hose and could result in water leakage. • Do not lead the drain hose to a place where corrosive gas (sulfur, ammonia, etc.) is generated such as septic tank. Corrosive gas may flow into the indoor unit through the drain hose, and could result in corrosion on the copper pipe and odor in the room.

Connection part



Screw fixing the mounting board

Attach

Connecting cord

Drain hose

Wiring connection • Please refer to “Connection of Power Cord” on page 10. Cutting lower cover bush (Horizontal and downward piping) • While installing the pipe from the right, left or bottom side, use a knife to cut lower cover bush accordingly. • Use the groove on the outer side if the pipe which is to be installed from the left side, etc. is big.

Board anchor

Leveler

Screw the hanger at the positions possibly near the

500 792

Auxiliary insulation sheet

upper and lower hooks where the indoor unit is hung. Use 4 or more screws to fix the hanger.

Mounting board Mark

Refrigerating pipe

Drain hose screw

Push the drain hose deeply into the screw hole, fix with the removed screw during step 1 .

Connecting cord

Drain cap

CAUTION Do not touch the suction port, bottom surface

Weight Pipe hole

Line

CAUTION • Do not over tighten vinyl tape on pipe heat insulation sheet Do not over tighten to avoid loss of heat insulating effect and dew condensation. • Pull the lower part of the indoor unit towards you installation plate If the tab is not fitted in securely, vibration of the indoor unit becomes stronger. and confirm that the tab of the indoor unit is fit in the

2 Insert drain cap up to the location securely till the cap stops.

1.2 Procedures of Installation and Precautions s Procedures to fix the hanger. 1.Drill holes on wall. (As shown below)

Failure to do so may cause an injury. or aluminium fin of the outdoor unit.

2.Push plug into the holes. (As shown below)

3.Fix the hanger on wall with 4.1 x 32 screw. (As shown in figure below)

Elevated stand

Wall

CAUTION • Be sure to insert drain hose and drain cap firmly and fix with screw Insufficient insert may result in water leakage.

 Hanger  Screw

Plug (Procure locally)

Ceiling

Bush part

Groove on the outer side

Wall

32mm

Bush part

Groove on the inner side

RAK-18_25_35PSA_EN.indd 1

2013-2-28 15:56:15

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