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CONDENSED WATER DISPOSAL OF OUTDOOR UNIT

There are holes on the base of Outdoor unit for condensed
water to exhaust.

In order to flow condensed water to the drain, the unit is installed on
a stand or a block so that the unit is 100mm above the ground as
shown figure. Join the drain pipe to one hole.

At first insert one portion of the hook to the base (Portion A), then
pull the drain pipe in the direction shown by the arrow while inserting
the hook into the base. After installation, check whether the drain
pipe cling to the base firmly.

When Using and Installing In Cold Areas

When the air conditioner is used in low temperature and in snowy
conditions, water from the heat exchanger may freeze on the base
surface to cause poor drainage. When using the air conditioner in such
areas, do not install the bushings. Keep a minimum of 250mm between
the drain hole and the ground. When using the drain pipe, consult your
sales agent.

    For more details, refer to the installation Manual for Cold Areas.

Maximum pipe length 20m

above 200mm

above 700mm

above 200mm

above 50mm when
installed on the
ceiling of balcony

(

)

above 100mm

above 100mm

give clearance as
wide as possible

SPLIT UNIT AIR CONDITIONER

INSTALLATION MANUAL

RAC-25NH5

Outdoor Unit

RAC-35NH5
RAC-50NH5

+  –  Screwdriver

Measuring Tape

Knife

Saw

ø 65mm Power Drill

Hexagonal Wrench

Key (    4mm)

Wrench (14, 17, 22, 26, 27mm)

Gas Leakage Detector

Pipe Cutter

Putty

Vinyl Tape

Pliers

Flare Tool

Carefully read through the procedures of proper
installation before starting installation work.

The sales agent should inform customers regarding
the correct operation of installation.

Tools Needed For Installation Work

SAFETY PRECAUTION

Read the safety precautions carefully before operating the unit.

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.

Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user’s guide.

!

!

WARNING

!

CAUTION

!

A circuit breaker or fuse (16A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.

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.

Piping shall be suitable supported with a maximum spacing of 1m between the supports.

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 instructions 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 power cables approved by the authorities of your country.

Be sure to use the specified wire 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. Improper insertion and loose contact may cause over-heating
and fire.

Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.

Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.

When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture
to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture
may be caused.

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.

FOR SERVICE PERSONNEL ONLY

THE CHOICE OF MOUNTING SITE 

 (Please note the following matters and obtain permission from customer before installation).

WARNING

!

The Outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.

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.

The clearances of the unit from top, left, right and front are specified in figure below. At least 3 of the above sides must be open air.

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.

Place the Outdoor unit and its connecting cord at least 1m away from the antenna or signal line of television, radio or telephone. This is to
avoid noise interference.

OUTDOOR UNIT

Dimension of Mounting Stand

of the Outdoor unit

(unit: mm)

The difference in height
between the indoor and
outdoor unit should be
kept max 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.

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

inner diameter ø 16mm

Names of Outdoor Components

Drain Pipe

1

57

12
35

124

500

320

10

20

(10)

340

mounting stand

Dimension of Mounting Stand

of the Outdoor unit

(unit: mm)

57

12
35

198

508

320

10

35

(10)

340

mounting stand

(RAC-25NH5,
 RAC-35NH5)

(RAC-50NH5)

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.

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

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

Pull downward

BASE

DRAIN PIPE

A

DRAIN PIPE

BUSH

100 mm ABOVE

11

10

BUSH

12

Figure showing the Installa-
tion of Outdoor Unit.

2

3

Bush

Qty

No.

Item

(RAC-25NH5,
 RAC-35NH5)

(RAC-50NH5)

HFC

R410A

<

I867: A 

>

Bush

1

10

11

12

(EN) INS RAC-25/35/50NH5

20/10/05, 9:14 AM

1

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