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117
11.8 INSTALLATION INSTRUCTIONS FS MULTI DUCT TYPE
HP
Cooling capacity
Model name
0.8 2.2kW
S-22NA1E5
1.0 2.8kW
S-28NA1E5
1.25 3.2kW
S-32NA1E5
REFRIGERANT
R 410A
1.5 3.6kW
S-36NA1E5
1.75 4.5kW
S-45NA1E5
2.0 5.6kW
S-56NA1E5
Precautions in terms of safety
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
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.
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.
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.
Warnings
The appliance must be installed by technician, who takes into account the requirements given by ISO5149 or eventual equivalent
requirements.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
risk of explosion and injury due to high tension inside the refrigerant cycle.
118
Cautions
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 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.
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.
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.
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.)
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.)
11.8.1
ACCESSORIES PACKED IN THE INDOOR UNIT CONTAINER
Name Q’ty Appearance
Purpose
Drain hose
1
For drain piping
Heat insulator
2
For insulating refrigerant pipe joint
Band 4
For fastening the heat insulator
Flat washer for M10
8
For fixing the hanging bolts
Installation Instruction
1
This manual
11.8.2
SELECTING THE LOCATION FOR THE INDOOR UNIT
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.
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
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.
600
Inspection hole
Front
Control box
Air conditioner
600
Above 2500mm
1000
[Top view]
(Unit: mm)
ސ If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is
decreased.
Warnings
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
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
should be locally decided.
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.
10. Do not install the indoor unit in a laundry. Electric shocks may result.
119
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:
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
Use the ventilation fan for smoke-collection
hood with suf• cient capacity.
hood with suf• cient capacity.
(Unit: mm)
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.
H
11.8.3
INSTALLATION OF INDOOR UNIT
POSITION OF SUSPENSION BOLT
900
940
70
440
550
x Place a padding between the unit and duct to
absorb unnecessary vibration.
x Install the unit connecting to the side of a drainage
hole as shown in the diagram for easy water
drainage.
drainage.
10mm
Drainage hole
POSITIONS OF AIR CONDITIONER BODY AND CEILING SURFACE
Flat washer for M10 (accessory)
Nut
(W3/8 or M10)
(W3/8 or M10)
Flat washer for M10 (accessory)
Hanging bolt
(W3/8 or M10)
(W3/8 or M10)
Nut
(W3/8 or M10)
(W3/8 or M10)
M10 Spring washer
Keep the length of the bolt
from the b racket as 40mm
from the b racket as 40mm
Warning
Tighten the nut and bolt to prevent unit from falling
120
INSTALLATION OF DUCT
1. There are three ways to install the duct for the air inlet as shown below; (a) ~ (c).
1. There are three ways to install the duct for the air inlet as shown below; (a) ~ (c).
2. The bottom of the panel can be converted into an air inlet [as the case of diagram (c)] as shown below;
11.8.4 REFRIGERANT
PIPING
Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit. (Additional
charging, etc.)
1. Brazing for piping.
charging, etc.)
1. Brazing for piping.
a. Execute brazing before tightening the flare nut.
b. Brazing must be executed while blowing
b. Brazing must be executed while blowing
nitrogen gas. (This prevents generation of
oxidized scale in copper pipe.)
oxidized scale in copper pipe.)
2. When there is a lot of brazings for long piping,
install a strainer midway of the piping. (The
strainer is locally supplied.)
strainer is locally supplied.)
3. Use clean copper pipe with inner wall surface free
from mist and dust. Blow nitrogen gas or air to
blow off dust in the pipe before connection.
blow off dust in the pipe before connection.
4. Form the piping according to its routing. Avoid
bending and bending back the same piping point
more than three times. (This will result in
hardening of the pipe).
more than three times. (This will result in
hardening of the pipe).
5. After deforming the pipe, align centers of the
union fitting of the indoor unit and the piping, and
tighten them firmly with wrenches.
tighten them firmly with wrenches.
6. Connect pipe to the service valve or ball valve
which is located below the outdoor unit.
7. After completed the piping connection, be sure to
check if there is gas leakage in indoor and
outdoor connection.
outdoor connection.
Union
round mark
x Confirm the round mark of the union (thin side) is
always at lower direction after connecting piping.
Vacuum drying
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.
CAUTION Use two wrenches and tighten with regular torque.
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.
CAUTION Use two wrenches and tighten with regular torque.
Flare nut fastening torque N•m (kgf•cm)
Cooling capacity
Liquid piping
Gas piping
ø6.35mm 18
(180) ø12.7mm 55
(560) 2.2kW
-
6.3kW
ø6.35mm
ø12.7mm
ø9.52mm
42 (430)
ø15.88mm
65 (660)
7.1kW or more
ø9.52mm
ø15.88mm
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