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SPLIT UNIT AIR CONDITIONER 

INSTALLATION MANUAL

  

RAC-25NPA

 Outdoor 

Unit 

RAC-35NPA

  

RAC-50NPA

  +  –  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

!

!

!

!

 

Please request your sales agent or quali ed technician to install your unit. Water leakage, short circuit or  re 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  re.

  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 speci ed 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  re.

  Please use the speci ed components for installation work. Otherwise, the units may collapse or water leakage, electric 

shock and  re may occur.

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

  When installing or removing an air conditioner, only speci ed 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  re, 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  re in the fan-driven heater, space heater, etc., a poisonous gas may occur.

 Unauthorized 

modi cations to the air conditioner may be dangerous. If a breakdown occurs please call a quali ed  air 

conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and  re,  etc.

FOR SERVICE PERSONNEL ONLY

THE CHOICE OF MOUNTING SITE 

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

!

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

!

 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 speci ed  in   gure 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  ammable 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).

Dimension of Mounting Stand

of the Outdoor unit

(unit: mm)

(RAC-25NPA,
 RAC-35NPA)

(RAC-50NPA)

 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

Figure showing the 
Installation of Outdoor Unit

<

IA952: A 

>

 

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  ammable gas. The outdoor unit may

 catch 

 re if  ammable gas leaks around it.

  Please ensure smooth  ow of water when installing the drain hose.

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

2

3

Bush

Names of Outdoor Components

Qty

No.

Item

Drain Pipe

1

Bush

1

10

11

12

(RAC-25NPA,
 RAC-35NPA)

(RAC-50NPA)

mounting stand

mounting stand

Maximum pipe length 20m

above 200mm

above 100mm

give clearance as
wide as possible

above 50mm when
installed on the
ceiling of balcony

above 100mm

above 700mm

above 200mm

CONDENSED WATER DISPOSAL OF OUTDOOR UNIT

 

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

  In order to  ow 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  gure. Join the drain pipe to one hole.

 At 

 rst 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  rmly.

 

 

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.

A

11

10

12

DRAIN PIPE

BUSH

BUSH

100mm ABOVE

inner diameter ø 16mm

CAUTION

WARNING

  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

DRAIN PIPE

BASE

INS RAC-25-35-50NPA (EN)   1

3/30/13   9:22 AM

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