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–34–
2. Tape the Pipings and Connecting cable from
bottom to top.
3. Form the pipings gathered by taping along the
exterior wall, and make the trap prevent water
from entering into the room.
from entering into the room.
4. Fix the pipings onto the wall by saddle or
equivalent.
In case of the Outdoor Unit being installed above
position of the Indoor Unit.
position of the Indoor Unit.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
1) PRECAUTIONS IN TEST RUN
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
➀
For test run, carry out the cooling operation firstly even during heating season. If heating operation
is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.
is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.
➁
Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3 sec-
onds at the same time.
• To cancel the test run, press any button.
• After completing work, be sure to measure and record trial run properties, and store measured data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature,
• 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, compressive pressure.
piping temperature, compressive pressure.
• As to the structure and appearance, check following items.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
Caution
❐
Is the circulation of air adequate?
❐
Is the draining smooth?
❐
Is the heat insulation complete
(refrigerant and drain piping)?
❐
Is there any leakage of refrigerant?
❐
Is the remote controller switch operated?
❐
Is there any faulty wiring?
❐
Are not terminal screws loosened?
M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
Test running
–35–
Thermometer
2) Connection of power supply
1. Connect the power supply cord to the inde-
pendent power supply.
• Circuit breaker is required.
2. Operate the unit for fifteen minutes or more.
3) Evaluation of the performance
1. Measure the temperature of the intake and dis-
charge air.
2. Ensure the difference between the intake tem-
perature and the discharge one is more than
8°C (Cooling) or reversely (Heating).
8°C (Cooling) or reversely (Heating).
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring,
be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning,
temperature control, etc.).
temperature control, etc.).
HAND OVER
–23–
Indoor unit
Outdoor unit
B
A
• Rated performance for refrigerant line length of: 5m
• If 24K or 28K Model is installed at a distance of 15m, 500g of refrigerant
• If 24K or 28K Model is installed at a distance of 15m, 500g of refrigerant
should be added ....................................................(15-5)x50g
NOTE:
• 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:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient
spraying, dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
• 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.
• Make enough distance from a cooking room to install the air conditioner in such a place where it
may not suck in oily steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in sus-
pension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
3) Piping length and the elevation
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
distance
MODEL
24K, 28K, 30K BTU 5/8"
3/8"
5
20
36K BTU
3/4"
3/8"
5
25
GAS
LIQUID
5
15
50
5
20
70
Elevation B(m)
Length A(m)
* Additional
refrigerant
(g/m)
Pipe Size
Rated
Rated
Max.
Max.
–24–
• The dimensions of the paper model for installing are
the same as those of the ceiling opening dimen-
sions.
sions.
• Select and mark the position for fixing bolts and pip-
ing hole.
• Decide the position for fixing bolts slightly tilted to
the drain direction after considering the direction of
drain hose.
drain hose.
• Drill the hole for anchor bolt on the wall.
Level gauge
Unit:mm
Ceiling
800 Unit size
800 Unit siz
e
720 (Hanging bolt)
60
60
840 (Ceiling opening)
840 (Ceiling opening)
624(Hanging bolt)
108
108
600
120
120
Ceiling board
• This air-conditioner uses a drain pump.
• Horizontly install the unit using a level gauge.
• During the installation, care must be taken not to
• Horizontly install the unit using a level gauge.
• During the installation, care must be taken not to
damage electric wires.
CAUTION
2. Ceiling opening dimensions and hanging bolt location
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