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8

MALFUNCTION

The followings are not malfunction

Shuru

Shuru

When the air conditioner is started, when the compressor starts or
stops during operation or when the air conditioner is stopped, it
sometimes sounds "shuru shuru" or "gobo gobo". It is the flowing
sound of the refrigerant, and it is not a trouble.

Water flowing
sound is heard.

This is caused by heat expansion or contraction of plastics.

Cracking sound is heard.

It smells.

Air which blows out from the indoor unit sometimes smells.
The smell results from residents of tobacco smoke or cosmetics
stuck inside of unit.

When the air conditioner is used at restaurant etc. where dense
edible oil fume is always exists, white fog sometimes blows out
of air outlet during operation.
In this case consult sales dealer for cleaning the heat exchanger.

During operation,
white fog comes
out of indoor unit.

Unit does

not start

Wait for
three
minutes

It is switched into the FAN mode
during cooling.

To prevent frost from being accumulated on the indoor unit heat
exchanger, it is sometimes automatically switched to the FAN mode
but it will soon return to the cooling mode.

Even if the operation switch is turned on, cooling, dehumidifying
or heating is not operable for three minutes after the conditioner is
stopped. Because the protecting circuit is activated.
(During this time air conditioner operates in fan
mode.)

The air conditioner can not be
restarted soon after it stops.

Air does not blow or the fan
speed can not be changed during
dehumidifying

During operation, operation mode
has changed over automatically.

Water or steam generates from
the outdoor unit during heating.

When it is excessively cooled during dehumidifying, the blower
automatically repeats reducing and lowering the fan speed.

Isn't the AUTO mode selected?
In the case of AUTO mode, operation mode is changed automati-
cally from cooling to heating or vise-versa according to the room
temperature.

This results when frost accumulated on the outdoor unit is removed
(during defrosting operation).

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Содержание AD88NAHBEA

Страница 1: ...INSTRUCTION MANUAL No 0010574404 DUCT TYPE AIR CONDITIONER AD88NAHBEA AU88NATBEA ...

Страница 2: ...7 10 CARE AND MAINTENANCE 11 FOR PREPARATION OF HEATING 12 IS THE UNIT INSTALLED CORRECTLY 13 INSTALLATION MANUAL FOR INDOOR UNIT 13 21 SAFETY PRECAUTIONS 3 5 PARTS AND FUNCTIONS 6 CAUTIONS 2 INSTALLATION MANUAL FOR OUTDOOR UNIT 22 28 ...

Страница 3: ... an appropriate anti pollution method of disposal Disposal of the packaging of your new air conditioner All the packaging materials employed in the package of your new air conditioner may be disposed without any danger to the environment The cardboard box may be broken or cut into smaller pieces and given to a waste paper disposal service The wrapping bag made of polyethylene and the polyethylene ...

Страница 4: ...cident by some improper handing Do not install nearby the place where may have leakage of flammable gas Depending on the place of installation a circuit breaker may be necessary Drain pipe should be arranged to provide a positive draining If the gas leakes and gathers around it may cause the fire Unless the circuit breaker is installed it could cause elecrical shocks Where strong winds may prevail...

Страница 5: ...y of such equip ment which generates steam condensed water may drip during cooling operation or it could cause a fault current or short circuit When operating the system simultaneously with a combustion apparatus indoor air must be ventilated frequently Check occasionally the support structure of the unit for any damageafter a use of long period of time Insufficient ventilation could cause an oxyg...

Страница 6: ...l the cables shall have got the European authentication certificate During installa tion when the connecting cables break off it must be assured that the grouding wire is the last one to be broken off 6 The breaker of the air conditioner should be all pole switch and the distance between its two contacts should be no less 3mm 7 The indoor unit installation height is at least 2 5m Installation and ...

Страница 7: ...PARTS AND FUNCTIONS 6 Indoor Unit Air outlet Air inlet Air inlet Duct Duct Drainpipe Air outlet Air inlet ...

Страница 8: ...t Isn t sun shine invading direct Isn t any unexpected heating load generated Isn t the room much crowded Isn t the swing louver horizontal At HEATING mode If swing louver is horizontal the blow wind does not reach floor The wind does not blow during heating operation Isn t it warming up page 9 When the air conditioner does not operate properly after you have checked the above mentioned items or w...

Страница 9: ...tched into the FAN mode during cooling To prevent frost from being accumulated on the indoor unit heat exchanger it is sometimes automatically switched to the FAN mode but it will soon return to the cooling mode Even if the operation switch is turned on cooling dehumidifying or heating is not operable for three minutes after the conditioner is stopped Because the protecting circuit is activated Du...

Страница 10: ...Do not open the inlet grill until fan stops completely Fan will continue rotating for a while by the law of inertia after operation is being stopped CAUTION Pre Season Care See that there are no obstacles blocking the air inlet and air outlet of both indoor and outdoor units Make sure that the air filter is not dirty Cut in the power supply switch 12 hours before starting run Post Season Care Oper...

Страница 11: ...over to ordinary heating operation WARMING OPERATION Heat pump type warming Defrosting operation Atmospheric temperature and warming capacity Period of warm up With the heat pump type warming the mechanism of heat pump that concentrate heat of outdoor air with the help of refrigerant to warm the indoor space is utilized When a room is warmed with a heat pump type air conditioner frost accumulates ...

Страница 12: ...ot spring area etc The place where salt breeze blows Seaside etc The place where dense soot smoke exists The place where humidity is extraordina rily high The place where near the machine which radiates the electromagnetic wave The place where voltage variation is con siderably large For details consult your sales dealer The electric work must be burden on the authorized engineer with qualificatio...

Страница 13: ...ufficiently support heavy weight When strength is insufficient injury can result from a falling of the unit Execute the prescribed installation construction to prepare for earthquakes and the strong winds of typhoons and hurricanes etc Improper installations can result in accidents due to a violent falling over of the unit For electrical work please see that a licensed electrician executes the wor...

Страница 14: ...rape 2 Choose installation place 1 The chosen installation place should meet the following requirements and get the userís consent Place ensures ideal airflow distribution The passage of airflow has no obstacles When importing outside air it should be imported directly from outdoors if the pipe can not be extended it also can not be imported from top Place ensures enough space for maintenance The ...

Страница 15: ...sult to the builder 3 Hanger bolts installation Use care of the piping direction when the unit is installed Hanging bolt M10 Hole in anchor Hole in plug Insert Concrete Use M10 screw bolt In order to bear the weight of the unit for existed ceiling using foundation screw bolt for new ceiling using burying embedded screw bolt burying screw bolt or spot supplied other parts Before going on installati...

Страница 16: ...accessory Pipe cover small for insulation accessory Clamp accessory Adhesion For drain pipe use hard PVC general purpose pipe VP 25 I D 1 which can be purchased locally When connecting insert a PVC pipe end securely into the drain socket before tightening securely using the attached drain hose and clamp Adhesive must not be used connection of the drain socket and drain hose accessory c 5 Drain Pip...

Страница 17: ...ert the drain hose directly into drainage where the gas with sulfur may be generated Backwater bend Because the drain spout is at the position which negative pressure may occur So with the rise of water level in the drain pan water leakage may occur In order to prevent water leakage we designed a backwater bend The structure of backwater bend should be able to be cleaned As the below figure shown ...

Страница 18: ... 1Pa m when the dimension of one side of the air duct is fixed as 250mm as shown below Note 1Pa m 0 1mmAg m The chosen chart of simple duct m 3 h m 3 n 100 200 300 400 500 600 10 800 1 000 1 200 20 250 x 60 mmxmm 250 x 90 250 x 120 250 x 140 250 x 170 250 x 190 250 x 230 250 x 270 250 x 310 Shape Item Air volume Square duct Dimension m 3 h m 3 n 1 400 1 600 1 800 30 2000 2400 3 000 50 3 500 4 000 ...

Страница 19: ... is because of the irregular outer air mass strong wind and sunshine the humidity is increased There may be water drop on the outside of duct For cement and other new constructions even if not taking ceiling inner side as duct the humidity will also be so high At this time use glass fiber to perform heat preservation to the whole use iron net to bind the glass fiber Maybe exceeding the unit operat...

Страница 20: ...pacity number of fan controller is set at ì No 5î Rotate this switch capacity number setting No 1 No 8 Once the fan controller has trouble this linker can perform emergency assistant control When this linker is connected to the linker from the PCB it can operate with total load When this linker is connected to the linker from the PCB through the fan speed adjustment panel to adjust speed High Cond...

Страница 21: ...ht may damage nut leading to leakage Check if the connection pipe leaks then do heat insulation treatment as below figure shown Only use seal cushion to bind the joint part of air pipe and heat insulation parts Paste the refrigerant oil here Torque spanner Spanner Pipe joint Cone nut Middle size seal cushion accessory Use seal cushion to bind the pipe joint Clamp Heat insulation accessory for liqu...

Страница 22: ...ted grip on the ends of the wires Use copper conductor only Select wire sizes and circuit protection from table below This table shows 20 m length wires with less than 2 voltage drop 2 Wiring connection Make wiring to supply power to the outdoor unit so that the power for the indoor unit is supplied by terminals Item Model Phase Switch breaker A Circuit breaker Overcurrent protector rated capacity...

Страница 23: ...lower than the top of the unit 1 Handing As there is no protective package for the outdoor unit so the following points merit attention 1 When forklift is used insert the fork into the holes in the base plate 2 When crane is used lift the unit with 4 pieces of steel rope with diameter above 6 mm 3 Put protective materials between the cable and the unit to prevent deformation and damage of the surf...

Страница 24: ...lation make sure that there is no refrigerant leakage Refrigerant if meeting with heaters and stoves ect in the room may produce hazardous gas Connection of refrigerant pipe 1 The joints of the refrigerant pipe are inside the unit Take off the access hole cover in front of the unit 2 The pipe can be connected from the front or bottom of the outdoor unit 3 Remove the L shaped pipe from the valve by...

Страница 25: ...oor unit Diag2 Outdoor unit is above the indoor unit Liuid check ring Accumulator set 1 per 6 meters 6 During welding the gas pipe valve must be cooled down with a wet cotton cloth During welding of the distribution pipe 1 In case of brazing weld of joint nitrogen must be filled in the pipe to prevent oxidization 2 The refrigerant pipe should be newly made and clean During installation do not let ...

Страница 26: ...e Nitrogen bottle VL VH Gauge distributor High pressure gauge Low pressure gauge Three way valve fully closed gas side Solder joint Solder joint Tightly closed Indoor unit Indoor Outdoor Access hole Copper pipe Solder joint Tightly closed Tightly closed Accesshole Outdoor unit Liquid side three way valve Leak Test Leak test must be made after connection of the refrigerant pipe according to the fol...

Страница 27: ...n 3 minutes under 1 5MPa 15kg cm2g Serious leakage may be found Step 3 Charge for more than 24 hours under 3 0MPa 3 0kg cm2g Small leakage may be found Check for pressure decrease Without pressure decrease Pass With pressure decrease Check for leaage There will be a 0 01MPa 0 1kg cm2g pressure change for every 1 C ambient temperature change during the 24 hour pressure charge It should be corrected...

Страница 28: ...tory charge the refrigerant not including the construction procedure charged parts The calculation of the refrigerant charging When the connection pipe L 5 meters not need to add refrigerant If the connection pipe L 5 meters we need recharge the 115g refrigerant per add 1 meter That is the quantity of refrigerant charging L 5 115 g Refrigerant charge Refill refrigerant When the outdoor valve is sh...

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