Hitachi RAC-35YH6, RAS-35YH6 installation manual Direct Mounting On The Wall

FOR SERVICE PERSONNEL ONLY

THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation.)

WARNING WARNING

SAFETY PRECAUTION

• Read the safety precautions carefully before operating the unit.

•The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.

UNIT		CAUTION
	• No nearby heat source and no obstruction near the air
		outlet is allowed.
INDOOR	•	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 Outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.

	CAUTION
UNIT	• Do not expose the unit under direct sunshine or rain.
	• The air blown out of the unit should not point directly to
	Besides, ventilation must be good and clear of obstruction.
OUTDOOR	animals or plants.
	from the floor.
	• 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

• 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.

• The location must be convenient for water drainage.

• 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

• 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

Names of Indoor Components
No.	Item	Qty
	Hanger
1		1
	Screw for Hanger	6
2
	(4.1 x 32)
	Holder for Remote
3	Controller	1
	AAA size Battery	2
4
	Screw for holder of
5	Remote Controller	2
	(3.1 x 16)

The Length of Indoor Unit

Connecting Cord

above	above
0.9 m	1.6 m

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.

Cable drawer (right side)

Direction of Piping

Backward piping from left

Connection

• 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.

Figure showing the Installation of Indoor and Outdoor Unit.

				above
				50mm
			1	2
	above 50mm			above 50mm
Be sure to
completely
seal any gap		0.45m
with putty.
	bendnotmust
300mmabout		about	6 Used in	2,300 mm or more

horizontal piping

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.

• 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.

• 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.

CAUTION

•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.

•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.

	Holder
6	1
	Remote Controller
7	1
	Insulation sheet
8	1
	Bush
9	1
	Drain Pipe
0	1
	Switch Cover
A	1
	Purifying Filter
B	1

The components of 9 & 0 are included in the package of the outdoor unit.

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.

Dimension of Mounting Stand of the Outdoor unit

(unit : mm)

	(10)		50	Mounting
330	310			Stand
	10	35	12
		500
			125

above 50 mm when installed on the ceiling of balcony

above 100mm

above 300mm

Maximum pipe length 20m

above 200mm

above 50mm

give clearance

as wide as

possible

above

200mm

7

5 4 3

Plug (Procure locally)

The indoor piping should be insulated with the enclosed insulation pipe. (If the insulator is insufficient, please use commercial products.)

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

•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).

The connection of insulated drain hose.

Inner diameter 16mm

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

UNIT

1 Installation of Hanger, Wall Penetration and Installation of Protection Pipe

CAUTION

•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.

Direct Mounting On The Wall

• Please use hidden beams in the wall to hold the hanger.

Visible outline of the		450mm
outdoor unit
		400mm
125mm		316mm	20mm	125mm
	41mm			44mm
280mm	199mm			Wall hole
		80mm		42mm
45mm				45mm
ø65mm	65mm	390mm	10mm	ø65mm
Drain Hose		530mm		Drain Hose
	Level	780mm
		2 Screw for Hanger

1 Hanger

	Screw the hanger at the
	positions possibly near the
	upper and lower hooks where
	the indoor unit is hung. Use 4 or
Line	more screws to fix the hanger.
Weight	Wall hole

Procedures of Installation and Precautions

• Procedures to fix the hanger.

2 Installation Of The Indoor Unit

Cutting Low Cover bush

• 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.

Openings

¡PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL) Openings

Preparation

•Connect connecting cord.

•Pull out the pipe, connecting cord and drain hose.

Installation
• Insert the pipe through the wall hole.	Connecting cords, pipe and
¡ The upper part of the Indoor unit is hanged on the	drain hose must be laid
	together with Vinyl tape.

hanger.				Wall hole
™ The projection at the lower part of the Indoor unit is
hooked onto the hanger.				Pipe
1 Hanger		¡ 1 Hanger	Cable	Drain hose
		Lift the body	Drain layout of
	Refrigerating		backward piping
		of the unit
	Pipe	upwards and
		then force it
		downwards.
Protection		™
	Drain Hose Connecting Cord
Pipe
		Projection

INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES

•	The refrigerating pipe should be adjusted to fit into	Drain hose
	the hole on the wall and then ready for further
	connection.
• The terminals of 2 connected pipes must be covered
	with insulator used for terminal connection. Then the	Connecting
	pipes are wrapped with insulation pipe.	cord
•	Connect the connecting cord after removing low	Pipe
	cover.
	(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. Insulation pipe (must be wrapped with Holder
	Please select the easier position.	vinyl tape at every 120 mm)

THE CONNECTION OF REFRIGERATING PIPE DURING THE INSTALLATION OF INDOOR UNIT

Preparation To Install Refrigerating Pipes	The end of the refrigerating pipes are at
	locations marked with “▼” symbol.

•The refrigerating pipes and connecting cord transform and are attached.

0.85m
Please bend at a small	below
radius to form an arc	5mm
Installation
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	Hook
forwards.
• Place the drain hose through the hole on the wall.

INDOOR

1. Drill holes on wall.	2. Push plug into the holes.	3. Fix the hanger on wall with	™ PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
(As shown below)	(As shown below)	4.1 x 32 screw.	Preparation
		(As shown in figure below)

Wall	1 Hanger	Plug	Ceiling	Changed of Drain Hose and Installation Procedures.
.8mm		(Procure		•	Exchange the location of drain hose and drain cap while installing the pipe from the left side as
	2 Screw	locally)			shown in below. Be sure to plug in the drain hose until the insulating material folds upon itself.
		above 50mm
ø4					• Please use pliers to pull out the drain cap.	CAUTION
32mm	Wall				(This is an easier way to remove the drain	Insufficient insert may
					cap).
						result in water leakage.

• Procedures to fix the holder of remote control.			4.1 x 32 screw
1. Drill holes on wall.	2. Push plug into the holes.
(As shown below)	(As shown below)				Rib at the Indoor unit
Wall
ø4.4mm	Control				drain hose end
			Drain cap	Drain Hose	Insulating
	3 Remote				section of the
	Holder	5 Screw		• Remove low cover	• Push the pipe deeply until the insulating
		Plug		• Insert drain cap up to the
20mm					section of the drain hose end gets over the
	(Procure locally)			location securely till the
					rib at the indoor unit side.
				cap stops.

•Wrap the refrigerating pipes with insulation pipe after connecting refrigerating pipe.

•	Connect the connecting cord after removing low cover.							about 15cm
	(Refer to "Connection of Power Cord")
• After adjustment, the connecting cord and refrigerating pipes
	are placed into the space available under the Indoor unit.						Protection
•	The projection of Indoor unit must hook to the hanger.
							pipe
		Wall hole				Drain hose
Pipe			Connecting	Refrigerating	Pull this to the front during the
			cord	pipe
		Drain hose			connection of refrigerating
	Cable			Heat
					pipe to ease task.
							Connecting cord
Drain layout of backward piping from left				insulation pipe
								Holder Connected
								section
	3 Heat Insulation and Finish of the Piping
• The connected terminals should be completed sealed						Insulation material for pipe
	with heat insulator and then tied up with rubber strap.					connection
•	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						Sleeve of
	tape as shown in the figure showing the installation of
							protection pipe	Putty
	Indoor and Outdoor units.

Wall Penetration and Installation of Protection Pipe

•	Drill a ø65mm hole on wall which is		Indoor			Outdoor	WARNING
	slightly tilted towards the outdoor side.					2-5mm
							Be sure that the wire is not
	Drill the wall at a small angle.	Seal with			Seal with
•	Cut the protection pipe according to the						in contact with any metal in
		putty			putty
							the wall. Please use the
	wall thickness.
							protection pipe as wire
•	Empty gap in the sleeve of protection
							passing through the hollow
	pipe should be completely sealed with
							part of the wall so as to
	putty to avoid dripping of rain water into	Protection
							prevent the possibility of
				WALL
	the room.	pipe					damaged by mouse.
•	Please ensure smooth flow of water					Sleeve of
						protection	Unless it seals completely,
	when installing the drain hose. Improper
						pipe	any air with high humidity
	installing may wet your funiture.

Drain cap

CAUTION

•	The rubber strap used for fixing the insulator
	should not be tied with great force. Otherwise,
	this will damage heat insulation and causes	Pipe	Rubber strap tied
	water condensation.
			with great force
•	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.
•	Transform the piping while holding down the	Pipe
	lower portion of pipe-support by hand.		Transform after
		support

•	To enhance the heat insulation and to prevent water
	condensation, please cover the outdoor part of the
	drain hose and pipe with insulation pipe.
•	Completely seal any gap with putty.	Putty
4 Installation of Drain Hose

	CAUTION
Ditch	Be sure that the drain hose is
Condensed	not loosely connected bend or
water pond
Bending upwards Condensed water	proper condition like left figure.
pond
You are free to choose the side (left or right) for the installation of drain

• An IEC approved power cord should be

flows from outdoor and any

bending downward.

hose. Please ensure the smooth flow of condensed water of the Indoor

CAUTION

used. Power cord type: NYM.

dew may drop.

unit during installation. (Careless may result in water leakage.)

06K108_RAS-35_YH6_English.p65 1 11/13/06, 3:02 PM