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125 

For test run, refer to the “Precautions in test run” in the outdoor unit installation instructions manual. 
   

 

Test run is conducted using the wired controller, emergency switch on the infrared receiver or by using the outdoor 
units. For the wired controller test run see the instructions below. 

TEST RUN

 

x  Switch the power supply to ON for at least 12 hours in advance before the test run. 

x  First, press the ON/OFF ( ) button. 

x  Next, select the operational modes. 

x  Then press the TEST RUN button within 1 minute of pressing the ON/OFF ( ) button. 

x  Be sure to run the cooling operation test run for at least 20 minutes before starting the heating 

operation test run. 

x  Press TEST RUN or ON/OFF ( ) button again to cancel the test run mode. 

 

Detaching a connector with electrical current may cause damage to the control board. Ensure to 
turn OFF the power supply and wait for at least 5 minutes before performing this operation. 

 

Do not short the remote control wires. (There is no protective circuit operation.) Normal operation 
will commence once the short is solved. 

 

During the test run; ensure to operate the units in cooling mode prior to operating the units in 
heating mode. Caution: Operating the units in heating mode first may cause compressor failure. 

 

Test run should be performed for a minimum of 20 minutes. (Test run using the remote controller 
will change to normal operation after 30 minutes.) 

 

Use the outdoor unit to cancel the outdoor unit test run and the wired controller to cancel the wired 
controller test run. For the test run method using the AUTO button on the infrared receiver, refer to 
the “Emergency operation” section in the installation instruction manual for the infrared receiver. 

x  After completing work, be sure to measure and record trial run properties, and store measuring data, etc. 

x  Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind 

velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping 
temperature. 

x  As to the structure and appearance, check the following items. 
 

Is circulation of air adequate?
Is draining smooth?
Is heat insulation complete
(refrigerant and drain piping)?
Is there any leakage of refrigerant?

Is remote controller switch operated?
Is there any faulty wiring?
Are the terminal screws loosened?

M3…69-98N•cm {7-10kgf•cm}
M4…157-196N•cm {16-20kgf•cm}
M5…196-245N•cm {20-25kgf•cm}

x  Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning, 

temperature control, etc.) 

 
As to parts to be sold separately 
x  With regards to installation of the parts sold separately, follow the installation manual which is provided with the 

parts sold separately. 

 
As for work specifications of the outdoor unit, read the OUTDOOR UNIT INSTALLATION MANUAL attached to 
the outdoor unit. 
 
 
 
 
 
 
 
 
 
 
 

126 

 

HP 

Cooling capacity 

Model name 

 

1.75 4.5kW 

S-45MA1E5 

 

2.0 5.6kW 

S-56MA1E5 

 

 

2.5 6.3kW 

S-63MA1E5 

 

3.0 7.1kW 

S-71MA1E5 

 

3.5 9.0kW 

S-90MA1E5 

 

 

Carry out installation work with reliability after thorough reading of this “Precaution in terms of safety”.

 
x  Precautions shown here are differentiated between 

Warnings

 and 

Cautions

. Those that have much chances 

for leading to significant result such as fatality or serious injury if wrong installation would have been carried out 
are listed compiling them especially into the column of  

Warnings

. 

However, even in the case of items which are listed in the column of 

Cautions

, such items also have a chance 

for leading to significant result depending on the situations. 
In either case, important descriptions regarding the safety are listed, then observe them without fail. 

x  As to indications with illustration 

This mark means “Caution” or “Warning”.

This mark means “Earth”.

 

x  After installation work has been completed, do not only make sure that the unit is free from any abnormal 

condition through the execution of trial run but also explain how to use and how to perform maintenance of this 
unit to the customer according to the instruction manual. 
In addition, request the customer to keep this manual for installation work together with instruction manual. 
 

 

 

The appliance must be installed by technician, who takes into account the requirements given by ISO5149 or eventual equivalent 
requirements. 

 

As to installation, request the distributor or vendor to perform it. Imperfection in installation caused by that having been carried out by the 
customer himself may leads to water leakage, electric shock, fire, etc. 

 

Carry out the installation work with reliability according to this manual for installation work.  
Imperfection in installation leads to water leakage, electric shock, fire, etc. 

 

Carry out the installation work with reliability on the place that can bears the weight of this unit sufficiently.  
Insufficient strength leads to injury due to falling of the unit. 

 

Carry out predetermined installation work in preparation for strong wind such as typhoon, earthquake.  
Imperfection in installation work may lead to accidents arisen from overturn, etc. 

 

The unit must be installed in accordance with applicable national and local regulations. 
Any electrical work should only be carried out by qualified technician and use exclusive circuits without fail.  
Presence of insufficient capacity in power circuit or imperfection in execution leads to electric shock, fire, etc. 

 

Wiring shall be connected using specified cables and fix them securely so that external force of the cables may not transfer to the 
terminal connection section.  
Imperfect connection and fixing leads to fire, etc. 

 

If installing inside a small room, measures should be taken to prevent refrigerant levels from building up to critical concentrations in the 
event of a refrigerant leak occurring. Please discuss with the place of purchase for advice on what measures may be necessary to 
prevent critical concentrations being exceeded. If the refrigerant leaks and reaches critical concentration levels, there is the danger that 
death from suffocation may result. 

 

Securely attach the protective covers for the outdoor unit connection cables and power cord so that they do not lift up after installation. If 
the covers are not properly attached and installed, the terminal connections may overheat, and fire or electric shock may result. 

 

Switch off all supplies before accessing any electrical part. 

 

If refrigerant gas escapes during installation, ventilate the affected area. If the refrigerant gas comes into contact with sparks or naked 
flames, it will cause toxic gases to be generated. 

 

Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flames 
from a fan heater, stove or kitchen range, which will cause toxic gases to be generated. 

 

When performing piping work do not mix air except for specified refrigerant (R410A) in refrigeration cycle. It causes capacity down, and 
risk of explosion and injury due to high tension inside the refrigerant cycle. 

 
 
 
 
 

127 

 

 

Carry out Earthing work. 
Do not connect the Earth return to the gas pipe, water line pipe, lightning rod and telephone lines. 
Imperfection in Earth return may lead to electric shock 

 

Do not install the unit at the place where the possibility of inflammable gas leakage exists. If gas leakage should arise and the gas builds 
up around the unit, such situation may lead to ignition. 

 

Mounting of the earth leakage circuit breaker is required. Omission in mounting of the earth leakage circuit breaker may lead to electric 
shock. 

 

Drain piping should be made to ensure secure drainage according to the manual for installation work and carry out the thermal insulation 
to prevent the occurrence of condensation. 
Imperfection in piping work leads to water leakage and may cause the house and property, etc. to become wet. 

 

Position the indoor unit, outdoor unit, power cords and indoor/outdoor unit connection cables in a way so that they are at least 1 meter 
away from televisions and radios. This is to avoid problems such as interference with picture and/or sound. (However, note that 
depending on the electromagnetic wave conditions, interference may still occur even if the separation distance is more than 1 meter.) 

No Parts 

name Q’ty 

1 

Thermal insulator for refrigerant pipe

 

2 

2 

Hose clip for thermal insulator

 

5 

3 

M10 Flat waher

 

8 

4 

Thermal insulator for drainage hole

 

1 

5 

Duct flange R

 

1 

6 

Duct flange L

 

1 

7 

Screws

 

4 

8 

Flexible pipe

 

1 

x  (5) and (6) should be installed when the duct will 

be installed at the return hole. 

Provide a check port on the piping side ceiling for repair and maintenance. 
x  Install the indoor unit once the following conditions are satisfied and after receiving the customer approval. 

1.  The indoor unit must be within a maintenance space. 
2.  The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading 

of air throughout the room. 
 

 

 

ސ If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is 

decreased. 

 

 

3.  The installation position must be able to support a load four times the indoor unit weight. 
4.  The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance. 
5.  The indoor unit must allow easy draining. 
6.  The indoor unit must allow easy connection to the outdoor unit. 
7.  Place the indoor unit easy water drainage. (Suitable dimension “H” is necessary to get slop to drain as figure.) 
8.  The indoor unit must be from at least 3m away from any noise-generating equipment. The electrical wiring 

must be shielded with a steel conduit. 

9.  If the power supply is subject to noise generation, add a suppressor. 
10.  Do not install the indoor unit in a laundry. Electric shocks may result. 

 
 
 
 
 
 

128 

Note 

Ɣ

   Thoroughly study the following installation locations 

1.  In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo 

fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, 
dispersing of water drops, drain pump malfunction, etc.  
In these cases, take the following actions: 

x  Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that 

it draws oily steam which should not flow into the suction of the air conditioner. 

x  Make enough distance from the cooking room to install the air conditioner in such place where it may not 

suck in oily steam. 
 

Air conditioner

Cooking table

Ensure ample

distance

 

 

2.  Avoid installing the air conditioner in such circumstances where 

cutting oil mist or iron powder exist especially in factories, etc. 

3.  Avoid places where inflammable gas is generated, flows-in, 

contaminated, or leaked. 

4.  Avoid places where sulphurous acid gas or corrosive gas can be 

generated. 

5.  Avoid places near high frequency generators. 

 

 

POSITION OF SUPENSION BOLT 
 

 

 
x  Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. 

x  Install the unit leaning to a drainage hole side as a figure for easy water drainage. 
 

 

 
(unit: mm)

 A 

B 

C 

D 

E 

S-45MA1E5 

S-56MA1E5 

840 780 523  64  650 

S-63MA1E5 

S-71MA1E5 

S-90MA1E5 

1060 

1000 

523 64 650