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105
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
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.
4. Avoid places where sulphurous acid gas or corrosive gas can be generated.
5. Avoid places near high frequency generators.
Model name
Height from the ceiling
S-63UA1E5 S-71UA1E5
S-90UA1E5
S-90UA1E5
246mm or more
11.6.3
INSTALLATION OF INDOOR UNIT
CEILING OPENING DIMENSIONS AND HANGING BOLT LOCATION
The paper model for installation expand or shrink
according to temperature and humidity.
Check on dimensions before using it.
The paper model for installation expand or shrink
according to temperature and humidity.
Check on dimensions before using it.
Caution
During the installation, care must be taken not to
damage electric wires.
damage electric wires.
x The dimensions of the paper model for installation
are the same as those of the ceiling opening
dimensions.
dimensions.
x Be sure to discuss the ceiling drilling work with the
workers concerned.
This air conditioner uses a drain up motor.
Horizontally install the unit using a level gauge.
(Hanging bolt)
D rain pipe
(Unit: mm)
880 (
C
ei
lin
g
op
eni
ng
)
795 (
H
an
gi
ng
bol
t)
840 (
U
ni
t si
ze)
840 (U nit size)
R efrigerant pipe
700
0
9
0
9
42.
5
42
.5
880 (Ceiling opening)
106
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
Warning
Tighten the nut and bolt to prevent unit from falling
HANGING POSITION OF THE AIR CONDITIONER BODY
Air conditioner body gap setting
between ceiling surface should
be 10mm as right figure.
(Adjustment of height direction
should be done after fixing
decorative panel.)
Air
conditioner
Keep the length of the bolt
from the bracket as 40 mm
from the bracket as 40 mm
Ceiling
Ceiling
Paper model for
installation
Place the screws for paper model
(4 pieces)
10
m
m
Open the ceiling board along the
outer edge of the paper model
outer edge of the paper model
11.6.4 REFRIGERANT
PIPING
Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit. (Additional
charging, etc.)
1.
charging, etc.)
1.
Brazing for piping.
a. Execute brazing before tightening the flare nut.
b. Brazing must be executed while blowing
a. Execute brazing before tightening the flare nut.
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.)
install a strainer midway of the piping. (The
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.
free from mist and dust. Blow nitrogen gas or air
to 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).
bending and bending back the same piping point
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.
union fitting of the indoor unit and the piping, and
tighten them firmly with wrenches.
6.
Connect pipe to the service valve in the outdoor
unit.
unit.
7.
After completed the piping connection, be sure to
check if there is gas leakage in indoor and
outdoor connection.
check if there is gas leakage in indoor and
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 side piping
ø6.35 18
(180) ø12.7 55
(560)
2.2kW
-
6.3kW ø6.35mm
ø12.7mm
ø9.52
42 (430)
ø15.88
65 (660)
7.1kW or more
ø9.52mm
ø15.88mm
107
11.6.5
INDOOR UNIT DRAIN PIPING
x Drain piping must have down-slope (1/50 to
1/100); be sure not to provide up-and-down slope
to prevent reversal flow.
to prevent reversal flow.
x During drain piping connection, be careful not to
exert extra force on the drain port at the indoor
unit.
unit.
x The outside diameter of the drain connection at
the indoor unit is 32 mm.
Piping material: Polyvinyl chloride pipe VP-25 and
pipe fittings.
pipe fittings.
x Be sure to perform heat insulation on the drain
piping.
Heat insulation material: Polyethylene foam with
thickness more than 8 mm (local supply).
thickness more than 8 mm (local supply).
Upward routing
Pipe clamp
Indoor
unit
Trap
Down-slope
x The height of drain may be possible up to 750 mm.
Down-slope (1/50 ~ 1/100)
Drain port
750 m
m
or
les
s
Indoor unit
Elbow
Elbow
x When drain set piping, install as shown in the
figure below.
Drain Test
The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor
operation.
x Connect the main drain pipe to exterior and leave
The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor
operation.
x Connect the main drain pipe to exterior and leave
it provisionally until the test comes to an end.
x Feed water to the flexible drain hose and check
the piping for leakage.
x Be sure to check the drain up motor for normal
operating and noise when electric wiring is
complete.
complete.
x When the test is complete, connect the flexible
drain hose to the drain port.
Feed water
Drain hose
Drain up motor
Glue the joint
Drain hose connection
Use the clip (accessory)
Use the clip (accessory)
Main drain
pipe
pipe
Drain
port
11.6.6 HEAT
INSULATION
Caution
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water
leakage.
leakage.
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
Overlap with heat
insulator for piping.
insulator for piping.
Indoor
unit
Band
(Accessory)
(Accessory)
Heat insulator
for piping
(Local supply)
for piping
(Local supply)
Heat insulator
(Accessory)
(Accessory)
Hose clip (Accessory)
Heat insulator (Local
supply) (The thickness
must be at least 8 mm.)
supply) (The thickness
must be at least 8 mm.)
Flexible hose with
heat insulator
(Accessory)
heat insulator
(Accessory)
PVC pipe
(O.D. ø25)
(Local supply)
(O.D. ø25)
(Local supply)
To be glued
It may be required to take off this part for checking
or servicing the drain up motor. Please do not glue.
or servicing the drain up motor. Please do not glue.
Make sure that there is no clearance here.
108
2. Precautions in high humidity circumstance.
This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been
confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew point
temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according to
the following procedure:
x
confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew point
temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according to
the following procedure:
x
Heat insulation material to be prepared…
Adiabatic glass wool with thickness 10 to 20
mm.
Adiabatic glass wool with thickness 10 to 20
mm.
x
Stick glass wool on all air conditioners that are
located in ceiling atmosphere.
located in ceiling atmosphere.
x
In addition to the normal heat insulation
(thickness: more than 8 mm) for refrigerant
piping (gas piping: thick piping) and drain
piping, add a further of 10 mm to 30 mm
thickness material.
(thickness: more than 8 mm) for refrigerant
piping (gas piping: thick piping) and drain
piping, add a further of 10 mm to 30 mm
thickness material.
Pipe down
Indoor
unit
Pipe
Putty
Trap
Incision
Drain pipe
ސ Put the incision at the trap part of the heat insulator
(for water drain)
Wall seal
x When the outdoor unit is installed on a higher position than the indoor unit, install the trap so as not to instill
rain water into the wall by transmitting in piping.
x Stuff the space among piping, the electric wire, and the drain hose with “Putty” and seal the penetration wall
hole.
Make sure that rain water do not instill into the wall.
Make sure that rain water do not instill into the wall.
11.6.7 ELECTRICAL
WIRING
As to main power source and cable size of outdoor unit, read the installation manual attached to the outdoor unit.
Warning
The units must be installed in accordance with applicable national and local regulations.
The units installed by a professional installer must be supplied from a dedicated electrical circuit.
All electric work must be carried out by a qualified technician according to proper technical standards for electrical work and
according to installation manual for installation work.
If circuits with insufficient capacity are used, or if electrical work is not carried out properly, electric shocks or fire may result.
The units installed by a professional installer must be supplied from a dedicated electrical circuit.
All electric work must be carried out by a qualified technician according to proper technical standards for electrical work and
according to installation manual for installation work.
If circuits with insufficient capacity are used, or if electrical work is not carried out properly, electric shocks or fire may result.
Caution
Be sure to install a current leakage breaker or circuit breaker to the main power supply, otherwise electric shocks may result.
Caution
Be sure to connect the unit to secure earth connection. (with a earth resistance of 100
ȍ or less).
If the earthing work is not carried out properly, electric shocks may result.
Warning
Wiring shall be connected securely 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.
transfer to the terminal connection section. Imperfect connection and fixing leads to fire, etc.
1. Select a power source that is capable of supplying the current required by the air conditioner.
2. Feed the power source to the unit via a distribution switch board designed for this purpose, the switch should
disconnected all poles with a contact separation of at least 3 mm.
3. Always ground the air conditioner with a grounding wire and screw to meet the LOCAL REGULATIONS.
4. Be sure to connect the wires correctly to terminal board with connecting the crimp type ring terminal to the wires.
5. Be sure to turn off the main power before installing and connecting the remote controller.
4. Be sure to connect the wires correctly to terminal board with connecting the crimp type ring terminal to the wires.
5. Be sure to turn off the main power before installing and connecting the remote controller.
Note
If momentarily turning on the power supply for both the indoor and outdoor units, do not turn the power off after at least 1
minute has passed. (For the system’s automatic setting.)
Turning off the power supply on the way may cause an abnormal operation.
minute has passed. (For the system’s automatic setting.)
Turning off the power supply on the way may cause an abnormal operation.
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