27
Installation and Maintenance
Service Manual
Vacuum pump
Vacuum pump Vacuum pump
conversion joint
Connect to the
indoor unit
INDOOR
UNIT
Refrigerant fluid di
rection of fiow
3-way valve
inlet
2-w
ay valve
(8) Secure
(2)Turn
(7)Turn to open fully
(8) Secure
(2)Turn
(6) Open by 1/4 turn
(7)Turn to open fully
(8) Secure
(2)Turn
Valve cap
V
alve cap
Service
Vacuum pump
Vacuum pump Vacuum pump
conversion joint
Connect to the
indoor unit
INDOOR
UNIT
Refrigerant fluid di
rection of fiow
3-way valve
inlet
2-w
ay valve
(8) Secure
(2)Turn
(7)Turn to open fully
(8) Secure
(2)Turn
(6) Open by 1/4 turn
(7)Turn to open fully
(8) Secure
(2)Turn
Valve cap
V
alve cap
Service
BLEEDING
Humid air left inside the refrigerant circuit can cause compressor
malfunction. After having connected the indoor and outdoor units,
bleed the air and humidity from the refrigerant circuit using a
vacuum pump.
(1) Unscrew and remove the caps from the 2-way and 3-way
valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an absolute
vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the low-pressure
knob on the vacuum pump coupling.Stop the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it after 10
seconds. Check all the joints for leaks using liquid soap or an
electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Disconnect the
vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
Diameter (mm) Twisting moment (N.m)
Φ6 15-20
Φ9.52 35-40
Φ12 45-50
Φ16 60-65
Φ19 70-75
18/24/36/42K unit need to be installed the indoor unit
MAINTENANCE
Use suitable instruments for the refrigerant R410A.
● Do not use any other refrigerant than R410A.
Do not use mineral oils to clean the unit.
INSTALLATION DIMENSION DIAGRAM
The installation must be done by trained and qualied service
personnel with reliability according to this
manual.
Contact service center before installation to avoid the
malfunction due to unprofessional installation.
When picking up and moving the units, you must be guidedby
trained and qualied person.
Ensure that the recommende dspace is left around the
appliance.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this manual.
Please especially take notice of the following two symbols:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Caution! It indicates improper operation which will lead to injury or property damage.
Warning!
ƹ
The installation should be committed to the appointed service center; otherwise it will cause water
ƹ
Please install the unit
in a place
where is strong enough to withstand the weight of the unit; otherwise,
the unit would fall down and cause injury or death.
ƹ
The drain pipe should be installed as instructed in the manual to guarantee the proper drainage;
meanwhile it should be insulated to prevent condensing; otherwise the improper installation would cause water
leakage and then wet the household wares in the room.
ƹ
ƹ
Under the occurrence of an error (like burning smell etc.), please cut off the main power supply of the
unit.
ƹ
ƹ
ƹ
Please take notice of the supporting frame of the unit to see if it is damaged over the long time period of
use.
ƹ
or relocation of the unit.
ƹ
Non-professional personnel are prohibited to dismantle the electric box owing to the high voltage of the
outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be
Caution!
ƹ
nameplate and also check its security.
ƹ
Before using the unit, please check if the piping and wiring are correct to avoid water leakage,
ƹ
The main power supply must be earthed to avoid the hazard of electric shock and never connect this
earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth lead.
ƹ
ƹ
Do not allow children operate this unit.
ƹ
Do not operate this unit with wet hands.
ƹ
ƹ
When the unit is not to be used for a long time, please cut off the main power supply of the unit.
ƹ
Do not expose the unit to the moist or corrosive circumstances.
ƹ
Never step on the unit or place any object on it.
ƹ
It is suggested to have a power-on test annually.
GWHD(18)ND3JO
Space to the cover
200cm
30cm
(Air inlet side)
or abov
50cm
or
S
above
e
(Air outlet side)
pace to th
or above
or more
30cm
or above
Space to the cover
50c
m
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