NORTEK FMK4DH Flex Match Mini Split Floor Ceiling Type Heat Pump Owner’s Manual
- October 31, 2023
- NORTEK
Table of Contents
FMK4DH Flex Match Mini Split Floor Ceiling Type Heat Pump
Product Information:
The product is an air conditioner unit. It consists of an indoor
unit and an outdoor unit. The unit uses the refrigerant R410A. The
product is designed to provide pleasant cooling and heating in a
room. The installation manual provides instructions on how to
properly install and connect the indoor and outdoor units.
Product Usage Instructions:
Safety Precautions:
Before using the air conditioner, please read and follow the
safety precautions listed below:
-
Install the air conditioner as outlined in the installation
manual for comfortable operation. -
Connect the indoor unit and outdoor unit using the provided
room air conditioner piping and cord. -
Ensure that installation work is performed by authorized
personnel only and in accordance with national wiring
standards. -
In case of refrigerant leaks, ventilate the area and avoid
contact with flames as it may produce toxic gas. -
Do not power on the air conditioner until all installation work
is complete. -
Before running the compressor, ensure that the refrigerant pipe
is firmly attached. Do not operate the compressor if the
refrigerant piping is not properly attached, as it may cause
abnormal pressure in the refrigeration cycle leading to breakage
and injury. -
During the pump-down operation, turn off the compressor before
removing the refrigerant piping. Do not remove the connection pipe
while the compressor is in operation with the valve open, as it may
cause abnormal pressure in the refrigerant cycle leading to
breakage and injury. -
When installing or relocating the air conditioner, only use the
specified refrigerant (R410A). Mixing other gases can cause
abnormal pressure inside the refrigerant cycle, resulting in
breakage and injury. -
This appliance can be used by children aged 8 years and above,
and persons with reduced physical, sensory, or mental capabilities
if they have been given supervision or instruction on safe usage.
Children should not play with the appliance, and user maintenance
should not be done by children without supervision. -
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent, or qualified persons to avoid
hazards. -
Follow correct disposal procedures for this product.
-
Do not install the appliance in the laundry.
Outline of the Unit and Main Parts:
The unit consists of various main parts. Please refer to Fig.1
for a visual representation. Note that the connection pipe and duct
for this unit should be prepared by the user.
Ow ner’s Manual
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Contents 1 Safety Precautions……………………………………………………… 1 2 Outline of the Unit and
Main Parts ………………………………… 2 3 Operation of remote controller…………………………………………3
3.1 Buttons on remote controller …………………………………………..3 3.2 Introduction for
icons on display screen…………………………….3 3.3 Introduction for buttons on remote
controller………………………4 3.4 Function introduction for combination
buttons……………………9 3.5 Operation guide…………………………………………………………….11 3.6 Replacement
of batteries in remote controller…………………..11 4 Preparative for Installation
…………………………………………..12 4.1 Standard Accessory Parts …………………………………………….12 4.2
Selection of the Installation Location ………………………………12 4.3 Connection Pipe
Requirement ………………………………………13 4.4 Electrical Requirement …………………………………………………14
5 Installation of the Unit …………………………………………………15 5.1 Installation of the
Indoor Unit…………………………………………15 5.2 Installation of the Connection Pipe
…………………………………18 5.3 Vacuum and Gas Leakage Inspection …………………………….22 5.4
Installation of the Drain Pipe …………………………………………24 5.5 Electrical Wiring
………………………………………………………….27 6 Installation of Controllers …………………………………………… 31 7
Test Running……………………………………………………………. 32 7.1 Trial Operation and Testing
…………………………………………..32 8 Troubleshooting and Maintenance………………………………. 34 8.1
Troubleshooting ………………………………………………………….34 8.2 Routine Maintenance
…………………………………………………..35
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1 Safety Precautions
WARNING! CAUTION!
This mark indicates procedures which, if improperly performed, might lead to
the death or serious injury of the user.
This mark indicates procedures which, if improperly performed, might possibly
result in personal harm to the user, or damage to property.
WARNING!
(1). For operating the air conditioner pleasantly, install it as outlined in
this installation manual.
(2). Connect the indoor unit and outdoor unit with the room air conditioner
piping and cord available from our standard parts. This installation manual
describes the correct connections using the installation set available from
our standard parts.
(3). Installation work must be performed in accordance with national wiring
standards by authorized personnel only.
(4). If refrigerant leaks while work is being carried out, ventilate the area.
If the refrigerant comes in contact with a flame, it produces toxic gas.
(5). Do not power on until all installation work is complete.
(6). During installation, make sure that the refrigerant pipe is attached
firmly before you run the compressor. Do not operate the compressor under the
condition of refrigerant piping not attached properly with 2-way or 3-way
valve open. This may cause abnormal pressure in the refrigeration cycle that
leads to breakage and even injury.
(7). During the pump-down operation, make sure that the compressor is turned
off before you remove the refrigerant piping. Do not remove the connection
pipe while the compressor is in operation with 2-way or 3-way valve open. This
may cause abnormal pressure in the refrigerant cycle that leads to breakage
and even injury.
(8). When installing and relocating the air conditioner do not mix gases other
than the specified refrigerant (R410A) to enter the refrigerant cycle. If air
or other gas enters the refrigerant cycle, the pressure inside the cycle will
rise to an abnormally high value and cause breakage, injury, etc.
(9). This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
(10). If the supply cord is damaged, it must be replaced by the manufacturer,
its service agent or similarly qualified persons in order to avoid a hazard.
(11). Correct Disposal of this product
(12). The appliance shall not be installed in the laundry.
1
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2 Outline of the Unit and Main Parts
Fig.1 Notes: The connection pipe and duct for this unit should be prepared by
the user.
2
3 Operation of remote controller 3.1 Buttons on remote controller
1
2
4
3
5
7
6
9
8
13
10
14
11
15
12
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1 ON/OFF button
2 MODE button
3 FAN button
4 TURBO button
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5 YEXWWRQ 6 button
7 button 8 T-ON / T-OFF button
9 I FEEL button
10 CLOCK button
11 SLEEP button
12 X-FAN button (Note: X-FAN is the same with BLOW.)
13
button
14 LIGHT button
15 TEMP button
3.2 Introduction for icons on display screen
Operation mode Auto mode Cool mode Dry mode
{ Set fan speed
(No
fan speed. It’s displayed
only after turning it on.)
Send signal
{ WiFi
This is a general remote controller.Some models have this function while some
do not. Please refer to the actual models.
Switch temperature displaying type on
the unit’s display
8 heating function
Fan mode Heat mode
Clock T-ON /T-OFF
Set time Quiet
I feel Child lock Sleep mode Turbo mode
Left & right swing Up & down swing
Healthy mode
Scavenging functions
X-FAN function
3
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Note:
This is a general use remote controller, it could be used for the air
conditioners with multifunction; For some function, which the model doesn’t
have, if press the corresponding button on the remote controller that the unit
will keep the original running status.
After putting through the power, the air conditioner will give out a sound.
Operation indicator ” ” is ON (red indicator, the colour is different for
different models). After that, you can operate the air conditioner by using
remote controller.
Under on status, pressing the button on the remote controller, the signal icon
” ” on the display of remote controller will blink once and the air
conditioner will give out a “de” sound, which means the signal has been sent
to the air conditioner.
1 ON/OFF button
Press this button to turn on the unit. Press this button again to turn off the
unit.
2 MODE button
Press this button to select your required operation mode.
AUTO COOL DRY FAN HEAT
When selecting auto mode, air conditioner will operate automatically according
to ex-factory setting. Set temperature can’t be adjusted and will not be
displayed as well. Press “FAN” button can adjust fan speed. Press ” ” / ” ”
button can adjust fan blowing angle.
After selecting cool mode, air conditioner will operate under cool mode. Cool
indicator ” ” on indoor unit is ON. (This indicator is not available for some
models.) PresVYRUEXWWRQWRDGMXVWset temperature. Press “FAN” button to adjust
fan speed. Press ” ” / ” ” button to adjust fan blowing angle.
When selecting dry mode, the air conditioner operates at low speed under dry
mode. Dry indicator ” ” on indoor unit is ON. (This indicator is not available
for some models.) Under dry mode, fan speed can’t be adjusted. Press ” ” / ” ”
button to adjust fan blowing angle.
When selecting fan mode, the air conditioner will only blow fan, no cooling
and no heating. All indicators are OFF. Press “FAN” button to adjust fan
speed. Press ” ” / ” ” button to adjust fan blowing angle.
When selecting heating mode, the air conditioner operates under heat mode.
Heat indicator ” ” on indoor unit is ON. (This indicator is not available for
some PRGHOV3UHVVYRUEXWWRQWRDGMXVWVHWWHPSHUDWXUH3UHVV)$1EXWWRQ to adjust fan
speed. Press ” ” / ” ” button to adjust fan blowing angle. (Cooling only unit
won’t receive heating mode signal. If setting heat mode with remote
controller, press ON/OFF button can’t start up the unit).
4
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Note:
For preventing cold air, after starting up heating mode, indoor unit will
delay 1~5 minutes to blow air (actual delay time is depend on indoor ambient
temperature).
Set temperature range from remote controller: 16~30(61-86°F); Fan speed: auto,
low speed, medium speed, high speed.
3 FAN button
Pressing this button can set fan speed circularly as: auto (AUTO), low( ),
medium ( ), high( ).
Auto
Note:
Unde AUTO speed, air conditioner will select proper fan speed automatically
according to ex-factory setting.
It’s Low fan speed under Dry mode.
4 TURBO button
Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT
mode. ” ” icon is displayed on remote controller. Press this button again to
exit turbo function and ” ” icon will disappear. If start this function, the
unit will run at super-high fan speed to cool or heat quickly so that the
ambient temp. approachs the preset temp. as soon as possible.
5 Y button
3UHVVYRU ” button once increase or decrease set temperature 1 (°F).
+ROGLQJYRU” ” button, 2s later, set temperature on remote controller will
change quickly. On releasing button afteUVHWWLQJLV¿QLVKHGWHPSHUDWXUHLQGLFD tor
on indoor unit will change accordingly. (Temperature can’t be adjusted under
auto mode) When setting T-ON, T-OFF oU&/2&.SUHVVYRUbutton to adjust time.
(Refer to CLOCK, T-ON, T-OFF buttons)
Y
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6
button
Press this button can select left & right swing angle. Fan blow angle can be selected
circularly as below:
Note:
no display (stops at current position)
Press this button continuously more than 2s, the main unit will swing back an
forth from left to right, and then loosen the button, the unit will stop swinging and
present position of guide louver will be kept immediately.
Under swing left and right mode, when the status is switched from off to , if
press this button again 2s later, status will switch to off status directly; if press
this button again within 2s, the change of swing status will also depend on the
circulation sequence stated above.
This function is applicable to partial of models.
7
button
Press this button can select up & down swing angle. Fan blow angle can be selected circularly as below:
no display (horizontal louvers stops at current position)
When selecting ” “, air conditioner is blowing fan automatically. Horizontal
louver will automatically swing up & down at maximum angle.
When selecting ” DLUFRQGLWLRQHULVEORZLQJIDQDW¿[HG
SRVLWLRQ+RUL]RQWDOORXYHUZLOOVWRSDWWKH¿[HGSRVLWLRQ When selecting ” “, air
coQGLWLRQHULVEORZLQJIDQDW¿[HGDQJOH +RUL]RQWDOORXYHUZLOOVHQGDLUDWWKH¿[ed angle.
Hold ” ” button above 2s to set your required swing angle. When reaching your
required angle, release the button.
Note:
” ” may not be available. When air conditioner receives this signal, the air
conditioner will blow fan automatically.
Press this button continuously more than 2s, the main unit will swing back an
forth from up to down, and then loosen the button, the unit will stop swinging
and
present position of guide louver will be kept immediately. Under swing up and
down mode, when the status is switched from off to , if
press this button again 2s later, status will switch to off status directly;
if press
this button again within 2s, the change of swing status will also depend on
the
circulation sequence stated above.
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Y
Y
Y
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8 T-ON / T-OFF button
T-ON button “T-ON” button can set the time for timer on. After pressing this
button, ” ” icon disappears and the word “ON” on
rePRWHFRQWUROOHUEOLQNV3UHVVYRU ” ” button to adjust T-ON setting.
$IWHUHDFKSUHVVLQJYRUEXWWRQ T-ON setting will increase or decrease
1PLQ+ROGYRUEXWWRQV later, the time will change quickly until reaching your
required time. 3UHVV721WRFRQ¿UPLW. The word “ON” will stop blinking. ” ” icon
resumes displaying. Cancel T-ON: Under the condition that T-ON is started up,
press “T-ON” button to cancel it.
T-OFF button “T-OFF” button can set the time for timer off. After pressing
this button,” ” icon disappears and the word “OFF” on
UHPRWHFRQWUROOHUEOLQNV3UHVVYRU ” ” button to adjust T-OFF setting.
$IWHUHDFKSUHVVLQJYRUEXWWRQ 72))VHWWLQJZLOOLQFUHDVHRUGHFUHDVHPLQ+ROGYRU EXWWRQV
later, the time will change quickly until reaching your required time. Press
“T-OFF” word “OFF” will stop blinking. ” ” icon resumes displaying. Cancel
T-OFF. Under the condition that T-OFF is started up, press “T-OFF” button to
cancel it.
Note:
Under on and off status, you can set T-OFF or T-ON simultaneously. Before
setting T-ON or T-OFF, please adjust the clock time. After starting up T-ON or
T-OFF, set the constant circulating valid.
After that, air conditioner will be turned on or turned off according to
setting time. ON/OFF button has no effect on setting. If you don’t need this
function, please use remote controller to cancel it.
9 I FEEL button
Press this button to start I FEEL function and ” ” will be displayed on the
remote controller. After this function is set, the remote controller will send
the detected ambient temperature to the controller and the unit will
automatically adjust the indoor temperature according to the detected
temperature. Press this button again to close I FEEL function and ” ” will
disappear. Please put the remote controller near user when this function is
set. Do not put
the remote controller near the object of high temperature or low temperature
in order to avoid detecting inaccurate ambient temperature.When I FEEL
function is turned on, the remote controller should be put within the area
where indoor unit can receive the signal sent by the remote controller.
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10 CLOCK button
Press this button to set clock time. ” ” icon on remote controller will blink.
Press YRUEXWWRQZLWKLQVWRVHWFORFNWimH(DFKSUHVVLQJRIYRUEXWWRQ clock time will
increase or decrease 1 minXWH,IKROGYRUEXWWRQVODWHr, time will change quickly.
Release this button when reaching your required time.
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Note:
Clock time adopts 24-hour mode. The interval between two operation
can’WH[FHHGVV2WKHUZLVHUHPRWHFRQWUR
ller will quit setting status. Operation for T-ON/T-OFF is the same.
11 SLEEP button
Under COOL, or HEAT mode, press this button to start up sleep function. ” ”
icon is displayed on remote controller. Press this button again to cancel
sleep function and ” ” icon will disappear.After powered on, Sleep Off is
defaulted. After the unit is turned off, the Sleep function is canceled. In
this mode, the time of time can be adjusted. Under Fan DRY and Auto modes,
this function is not available.
12 X-FAN button
Pressing this button in COOL or DRY mode, the icon ” ” is displayed and the
indoor fan will continue operation for a few minutes in order to dry the
indoor unit even though you have turned off the unit. After energization,
X-FAN OFF is defaulted.X-FAN is not available in AUTO, FAN or HEAT mode. This
function indicates that moisture on evaporator of indoor unit will be blowed
after the unit is stopped to avoid mould. Having set X FAN function on: After
turning off the unit by pressing ON/OFF
button indoor fan will continue running for about a few minutes. at low speed.
In this period, press X-FAN button to stop indoor fan directly. Having set X
FAN function off: After turning off the unit by pressing ON/OFF button, the
complete unit will be off directly.
13
button
Press this button to achieve the on and off of healthy and scavenging functions in
LCD displays ” “. Press the button for the second time to start healthy and
scavenging functions simultaneously; LCD displays ” ” and ” “. Press this
button for the third time to quit healthy and scavenging functions
simultaneously. Press the button for the fourth time to start healthy
function; LCD display ” “. Press this button again to repeat the operation
above.
This function is applicable to partial of models.
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14 LIGHT button
Press this button to turn off display light on indoor unit. ” ” icon on remote
controller disappears. Press this button again to turn on display light. ” ”
icon is displayed.
15 TEMP button
By pressing this button, you can see indoor set temperature, indoor ambient
temperature or outdoor ambient temperature on indoor unit’s display. The
setting on remote controlleris selected circularly as below:
no display
When selecting ” ” or no display with remote controller, temperature indicator
on indoor unit displays set temperature.
When selecting ” ” with remote controller, temperature indicator on indoor
unit displays indoor ambient temperature.
When selecting ” ” with remote controller, temperature indicator on indoor
unit displays outdoor ambient temperature.
Note:
Outdoor temperature display is not available for some models. At that time,
indoor unit receives ” ” signal, while it displays indoor set temperature.
It’s defaulted to display set temperature when turning on the unit.There is no
display in the remote controller.
Only for the models whose indoor unit has dual-8 display. When selecting
displaying of indoor or outdoor ambient temperature, indoor
temperature indicator displays corresponding temperature and automatically
turn
3.4 Function introduction for combination buttons
Energy-saving function
Under cooling mode, press “TEMP” and ” CLOCK” buttons simultaneously to start
up or turn off energy-saving function. When energy-saving function is started
up, “SE” will be shown on remote controller, and air conditioner will adjust
the set temperature automatically according to ex-factory setting to reach to
the best energy-saving effect. Press “TEMP” and “CLOCK” buttons simultaneously
again to exit energy-saving function.
Note:
Under energy-saving function, fan speed is defaulted at auto speed and it
can’t
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be adjusted. Under energy-saving function, set temperature can’t be adjusted.
Press “TURBO”
button and the remote controller won’t send signal. Sleep function and energy-
saving function can’t operate at the same time. If
energy-saving function has been set under cooling mode, press sleep button
will cancel energy-saving function. If sleep function has been set under
cooling mode, start up the energy-saving function will cancel sleep function.
8 heating function
Under heating mode, press “TEMP” and “CLOCK” buttons simultaneously to start
up or turn off 8 heating function. When this function is started up, ” ” and
“8 ” will be shown on remote controller, and the air conditioner keep the
heating status at 8 . Press “TEMP” and “CLOCK” buttons simultaneously again to
exit 8 heating function.
Note:
Under 8 heating function, fan speed is defaulted at auto speed and it can’t be
adjusted.
Under 8 heating function, set temperature can’t be adjusted. Press “TURBO”
button and the remote controller won’t send signal.
Sleep function and 8 heating function can’t operate at the same time. If 8
heating function has been set under cooling mode, press sleep button will
cancel 8 heating function. If sleep function has been set under cooling mode,
start up the 8 heating function will cancel sleep function.
Under temperature display, the remote controller will display 46 heating.
Child lock function
3UHVVYDQGVLPXOWDQHRXVOWRWXUQRQRUWXUQRff child lock function. When child lock
function is on, ” ” icon is displayed on remote controller. If you operate the
remote controller, the ” ” icon will blink three times without sending signal
to the unit.
Temperature display switchover function
Under OFF status, press ” ” and “MODE” buttons simultaneously to switch
temperature display between and .
WIFI Function
Press “MODE” and “TURBO” button simultaneously to turn on or turn off WIFI
function. When WIFI function is turned on, the ” ” icon will be displayed on
remote controller; Long press “MODE” and “TURBO” buttons simultaneously for
10s, remote controller will send WIFI reset code and then the WIFI function
will be turned on. WIFI function is defaulted ON after energization of the
remote controller. This function is only available for some models.
Y Y
About Back-lighting Function
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3.5 Operation guide
1. After putting through the power, press “ON/OFF” button on remote
controller to
turn on the air conditioner.
2. Press “MODE” button to select your required mode: AUTO, COOL, DRY, FAN,
HEAT.
3. 3UHVVYRUEXWWRQWRVHWRXUUHquired temperature. (Temperature can’t
be adjusted under auto mode).
4. Press “FAN” button to set your required fan speed: auto, low speed, PHGLXP
speed, high speed.
5. Press ” ” button to select fan blowing angle.
3.6 Replacement of batteries in remote controller
1. Lift the cover along the direction of arrow (as shown in Fig 1 ). 2. Take
out the original batteries (as shown in Fig 1 ). 3. Place two 7# (AAA 1.5V)
dry batteries, and make sure the position of “+”
polar and “-” polar is correct (as shown in Fig 2). 4. Reinstall the cover (as
shown in Fig 2 ).
Fig.1
Fig.2
During operation, point the remote control signal sender at the receiving
window on indoor unit.
The distance between signal sender and receiving window should be no more than
8m, and there should be no obstacles between them.
Signal may be interfered easily in the URRPZKHUHWKHUHLVÀXRUHVFHQWODPS or
wireless telephone; remote controller should be close to indoor unit during
operation.
Replace new batteries of the same model when replacement is required. When you
don’t use remote controller for a long time, please take out the
batteries. If the display on remote controller is fuzzy or there’s no display,
please
replace batteries.
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4 Preparative for Installation
4.1 Standard Accessory Parts
The standard accessory parts listed below are furnished and should be used as required.
Table 1
Indoor Unit Accessories
No.
Name
Appearance
Q’ty
Usage
1 Nut with Washer
To fix the hook on the 8
cabinet of the unit.
Wireless Controller + 2
Battery
1+2 To control the indoor unit
3 Insulation
1 To insulate the gas pipe
4 Insulation
1 To insulate the liquid pipe
5 Installation Paperboard
2 To insulate the drain pipe
6 Fastener
4 To fasten the sponge
7 Nut
1 To connect gas pipe
8 Nut
1 To connect liquid pipe
4.2 Selection of the Installation Location
WARNING! The unit must be installed where strong enough to withstand the
weight of the unit and fixed securely otherwise the unit would topple or fall
off.
CAUTION! æ. Do not install where there is a danger of combustible gas leakage.
ç. Do not install the unit near heat source, steam, or flammable gas. è.
Children under 10 years old must be supervised not to operate the unit.
Decide the installation location with the customer as follows: 12
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.2.1 Indoor Unit
(1). Install the unit at a place where is strong enough to withstand the
weight of the unit.
(2). The air inlet and outlet of the unit should never be clogged so that the
airflow can reach every corner of the room.
(3). Leave service space around the unit as required in Fig. 2
Fig. 2 (4). Install the unit where the drain pipe can be easily installed.
(5). The space from the unit to the ceiling should be kept as much as possible
so as for more convenient service.
.3 Connection Pipe Requirement
CAUTION! The maximum length of the connection pipe is listed in the Table
below. Do not place the units between which the distance exceeds the maximum
length of the connection pipe.
)OH[0DWFK Unit
Item Model
GFH09(2.6)FMK4DH1 GFH12(3.5)FMK4DH1 GFH18(5.3)FMK4DH1 *)+)0.’+
Table 2
Size of Fitting Pipe(Inch)
Liquid
Gas
Max. Pipe Length (m)
1/4
3/8
20
Max. Height Difference between Indoor Unit and Outdoor
Unit (m)
10
Indoor unit Drainage pipe(Outer Diameter × wall thickness)
(mm) 17×1.75
1/4
1/2
20
10
17×1.75
1/4
1/2
20
10
17×1.75
3/8
5/8
20
10
17×1.75
(1). The connecting pipe should be thermally insulated properly. (2). The pipe
wall thickness shall be 0.5-1.0 mm and the pipe wall shall be able
to withstand the pressure of 6.0 MPa. The longer the connecting pipe, the
lower the cooling and heating effect performs. (3). The pipe wall thickness
shall be 0.5-1.0mm and the pipe wall shall be able to withstand the pressure
of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating
effect performs.
.4 Electrical Requirement
Electric Wire Size and Fuse Capacity. Table 3
Indoor Units
Power Supply
Fuse Capacity
Min. Power Supply Cord
V/Ph/Hz
A
9~24k
208/230V~ 60Hz
5
18AWG(0.82mm2 )
Notes: æ. The fuse is located on the main board. ç. Install the disconnect device with a contact gap of at least 3 mm in all poles
nearby the units (Both indoor unit and outdoor unit).The appliance must be
positioned so that the plug is accessible. è. The specifications of the power cable listed in the Table above
are determined based on the maximum power (maximum amps) of the unit. é. The specifications of the power cable listed in the Table above are applied to
the conduit-guarded multi-wire copper cable (like, YJV copper cable,
consisting of PE insulated wires and a39&FDEOHMDFNHWXVHGDW)DQG resistible to 90(194°F) (see IEC 60364-5-52). If the working condition changes, they should be modified according to the related national standard.
14
)OH[0DWFK Unit
5 Installation of the Unit 5.1 Installation of the Indoor Unit
5.1.1 Indoor unit dimension
WARNING ! . Install the indoor unit in a location which can withstand a load
of at least five times the
weight of the main unit and which will not amplify sound or vibration. . If
the installation location is not strong enough, the indoor unit may fall and
cause injuries. . If the job is done with the panel frame only, there is a
risk that the unit will come loose.
Please take care.
Fig. 3
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Model )+)0.’+ )+)0.’+ )+)0.’+ )+)0.’+
Table
A
B
870
235
1200
235
C 812 1142
Unit: mm
D
H
318
665
318
665
.1.2 Preparation for Installing the Indoor Unit
(1). Open the air inlet grille and the screw cover, and remove the screws.
(2). Release the claws in the 3 places indicated. (3). Release the center hook
and remove the front panel. (4). Release the claws in the 2 or 3 places
indicated and remove the electric
component cover.
.1.3 Indoor Unit Installation
(1). Determine the location of the hanger through the paper template, and then
remove the paper template.
Fig. (2). Insert the anchor bolts into the drilled holes, and drive the pins
completely
into the anchor bolts with a hammer. (3). Remove the right and left side
panels. (4). Put the hanger bolt into the clasp of the indoor unit and tighten
screws on
the hanger to prevent the indoor unit from moving.
)OH[0DWFK Unit
(5). Adjust the height of the unit to make the drain pipe slant slightly
downward so that the drainage will become much smoother.
Floor type
Ceiling type
Fig.
Fig. (6). Reinstall and tighten the right and left side panel.
)OH[0DWFK Unit
.1.4 Leveling
The water level test must be done after installing the indoor unit to make the
unit is horizontal, as shown below.
Fig.
. Installation of the Connection Pipe
..1 Flare Processing
(1). Cut the connection pipe with the pipe cutter and remove the burrs. (2).
Hold the pipe downward to prevent cuttings from entering the pipe. (3). Remove
the flare nuts at the stop valve of the outdoor unit and inside the
accessory bag of the indoor unit, then insert them to the connection pipe,
after that, flare the connection pipe with a flaring tool. (4). Check if the
flare part is spread evenly and there are no cracks (see Fig.
Fig.
)OH[0DWFK Unit
..2 Bending Pipes
(1). The pipes are shaped by your hands. Be careful not to collapse them.
Fig.
(2). Do not bend the pipes in an angle more than 90°.
(3). When pipes are repeatedly bent or stretched, the material will harden,
making it difficult to bend or stretch them any more. Do not bend or stretch
the pipes more than three times.
(4). When bending the pipe, do not bend it as is.
The pipe will be collapsed. In this case, cut
the heat insulating pipe with a sharp cutter as
shown in Fig. 1, and bend it after exposing
the pipe. After bending the pipe as you want,
be sure to put the heat insulating pipe back on the pipe, and secure it with tape.
Fig. 1
CAUTION!
. To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a
radius of curvature of 150 mm or over.
. If the pipe is bent repeatedly at the same place, it will break.
)OH[0DWFK Unit
..3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
CAUTION! . Be sure to apply the pipe against the port on the indoor unit
correctly. If the centering is
improper, the flare nut cannot be tightened smoothly. If the flare nut is
forced to turn, the threads will be damaged. . Do not remove the flare nut
until the connection pipe is to be connected so as to prevent dust and
impurities from coming into the pipe system.
When connecting the pipe to the unit or removing it from the unit, please do
use both the spanner and the torque wrench. (Fig. 1)
When connecting, smear both inside and outside of the flare nut with
refrigeration oil, screw it hand tight and then tighten it with the spanner.
Refer to Table to check if the wrench has been tightened properly (too tight
would mangle the nut and lead to leakage).
Examine the connection pipe to see if it leaks, then take the treatment of
heat insulation, as shown in the Fig. 1.
Use the medium-sized sponge to insulate the coupler of the gas pipe.
Fig. 1
Fig. 1 Table Flare nut tightening torque
Pipe Diameter 1/4Inch 3/8Inch 1/2Inch 5/8Inch 3/4Inch 7/8Inch
Tightening Torque 15-30 (N·m) 35-40 (N·m) 45-50 (N·m) 60-65 (N·m) 70-75 (N·m) 80-85 (N·m)
)OH[0DWFK Unit
CAUTION! Be sure to connect the gas pipe after connecting the liquid pipe
completely.
..4 Connecting the Pipe at the Outdoor Side Unit
Tighten the flare nut of the connection pipe at the outdoor unit valve
connector. The tightening method is the same as that as at the indoor side
Fig. 1
..5 Checking the Pipe Connections for Gas Leaking
For both indoor and outdoor unit side, check the joints for gas leaking by the
use of a gas leakage detector without fail when the pipes are connected.
..6 Heat Insulation on the Pipe Joints (Indoor Side Only)
Stick coupler heat insulation (large and small) to the place where connecting
pipes.
Fig. 1
)OH[0DWFK Unit
.2.7 Liquid Pipe and Drain Pipe
(1). If the outdoor unit is installed lower than the indoor unit. (See Fig.
15)
1). A drain pipe should be above ground and the end of the pipe does not dip
into water. All pipes must be restrained to the wall by saddles.
2). Taping pipes must be done from bottom to top.
3). All pipes are bound together by tape and restrained to wall by saddles.
(2). If the outdoor unit is installed higher than the indoor unit.
1). Taping should be done from lower to the upper part.
2). All pipes are bound and taped together and also should be trapped to
prevent water from returning to the room (See Fig. 16)
3). Restraint all pipes to the wall with saddles.
Fig. 15 Fig. 16
.3 Vacuum and Gas Leakage Inspection
CAUTION! Do not purge the air with refrigerants but use a vacuum pump to
vacuum the installation! There is no extra refrigerant in the outdoor unit for
air purging!
)OH[0DWFK Unit
.3.1 Vacuum
(1). Remove the caps of the liquid valve, gas valve and also the service port.
(2). Connect the hose at the low pressure side of the manifold valve assembly
to the service port of the unit’s gas valve, and meanwhile the gas and liquid
valves should be kept closed in case of refrigerant leak. (3). Connect the
hose used for evacuation to the vacuum pump. (4). Open the switch at the lower
pressure side of the manifold valve assembly and start the vacuum pump.
Meanwhile, the switch at the high pressure side of the manifold valve assembly
should be kept closed, otherwise evacuation would fail. (5). The evacuation
duration depends on the unit’s capacity, generally, 20 minutes for the
9k/12k/18k units, 30 minutes for the 24k units. And verify if the pressure
gauge at the low pressure side of the manifold valve assembly reads -1.0Mp
(-75cmHg), if not, it indicates there is leak somewhere. Then, close the
switch fully and then stop the vacuum pump. (6). Wait for some time to see if
the system pressure can remain unchanged, 5 minutes for the N12k/18k/24k
units. During this time, the reading of the pressure gauge at the low pressure
side can not be larger than 0.005Mp (0.38cmHg). (7). Slightly open the liquid
valve and let some refrigerant go to the connection pipe to balance the
pressure inside and outside of the connection pipe, so that air will not come
into the connection pipe when removing the hose. Note that the gas and liquid
valve can be opened fully only after the manifold valve assembly is removed.
(8). Place back the caps of the liquid valve, gas valve and also the service
port.
)OH[0DWFK Unit
Fig. 17 Note: For the large-sized unit, it has the service port for both the
gas valve and the liquid valve. During evacuation, it is available to connect
two hoses of the manifold valve assembly to two service ports to quicken the
evacuating speed.
.4 Installation of the Drain Pipe
.4.1 Precautions When Doing the Piping Work
CAUTION! Install the drain hose in accordance with the instructions in this
installation manual and keep the area warm enough to prevent condensation.
Problems with the piping may lead to water leaks.
)OH[0DWFK Unit (1). Keep piping as short as possible and slope it downwards at
a gradient of at
least 1/100 so that air may not remain trapped inside the pipe. (2). Keep pipe
size equal to or greater than that of the connecting pipe. (3). Install the
drain piping as shown and take measures against condensation.
Improperly rigged piping could lead to leaks and eventually wet furniture and
belongings.
Fig. (4). Connect the drain hose.(Fig. 2)
Fig. 2
..2 Installing the Drain Pipes
(1). For determining the position of the drain hose, perform the following
procedures.
(2). Insert the drain pipe to the drain outlet of the unit and then tighten
the clamp securely with tape. (Fig. 2)
(3). Connect the extension drain pipe to the drain pipe and then tighten the
clamp with tape.
)OH[0DWFK Unit
Fig. 2
Fig. 2
Fig. 2
Tighten the clamp until the screw head is less than 4 mm from the hose. (Fig.
2)
– Metal clamp – Drain hose – Grey tape
Insulate the pipe clamp and the drain hose using heat insulation sponge. (Fig.
2)
– Metal clamp – Insulation sponge
(1). When drain hose requires extension, obtain an extension hose commercially
available.
(2). After connecting the local drain hose, tape the slits of the heat
insulation tube.
(3). Connect the drain hose to the local drain pipe. Position the inner
connecting wire in the same direction as the piping.
..3 Connecting the Drain Hose
(1). Connect the extension auxiliary pipe to the local piping. (2). Prepare
the local piping at the connection point for the drain pipe, as
shown in the installation drawings. Note: Be sure to place the drain hose as
shown in the diagram below, in a downward sloping direction.
)OH[0DWFK Unit
Fig. 2
..4 Testing of Drain Piping
(1). After piping work is finished, check if drainage flows smoothly. (2). As
shown in the Figure, pour water into the drain pan from the right side to
check that water flows smoothly from the drain hose.
. Electrical Wiring
Fig. 2
..1 Wiring Precautions
WARNING!
. Before obtaining access to terminals, all supply circuits must be
disconnected. . The rated voltage of the unit is as shown as Table . Before
turning on, verify that the voltage is within the 185~264V range (for single
phrase
unit) or 342~457V range (for three-phrase unit). . Always use a special branch
circuit and install a special receptacle to supply power to the
air conditioner.
)OH[0DWFK Unit
. The special branch circuit breaker is installed in the permanent wiring.
Always use a circuit that can trip all the poles of the wiring and has an
isolation distance of at least 3 mm between the contacts of each pole.
. Perform wiring work in accordance with standards so that the air conditioner
can be operated safely and positively.
. Install a leakage special branch circuit breaker in accordance with the
related laws and regulations and electric company standards.
CAUTION! . The power source capacity must be the sum of the air conditioner
current and the current
of other electrical appliances. When the current contracted capacity is
insufficient, change the contracted capacity. . When the voltage is low and
the air conditioner is difficult to start, contact the power company to raise
the voltage.
5.5.2 Electrical Wiring
(1). For solid core wiring (Fig. 26) 1). Cut the wire end with a wire cutter
or wire-cutting pliers, then strip the insulation about 25 mm (15/16″). 2).
Using a screwdriver, remove the terminal screw(s) on the terminal board. 3).
Using pliers, bend the solid wire to form a loop suitable for the terminal
screw. 4). Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
(2). For strand wiring (Fig. 26) 1). Cut the wire end with a wire cutter or
wire-cutting pliers, then strip the insulation about 10 mm (3/8″). 2). Using a
screwdriver, remove the terminal screw (s) on the terminal board. 3). Using a
round terminal fastener or pliers, securely clamp a round terminal to each
stripped wire end. 4). Position the round terminal wire, and replace and
tighten the terminal screw with a screwdriver.(Fig. 27)
)OH[0DWFK Unit
Fig. 26
Fig. 27
Fig. 28
(3). How to fix connection cord and power cord by cord clamp
After passing the connection cord fasten it with the cord clamp. (Fig. 28)
WARNING!
. Before starting work, check that power is not being supplied to the indoor
unit and outdoor unit.
. Match the terminal block numbers and connection cord colors with those of
the indoor unit side.
. Erroneous wiring may cause burning of the electric parts. . Connect the
connection cords firmly to the terminal block. Imperfect installation may
cause
a fire. . Always fasten the outside covering of the connection cord with cord
clamps. (If the
insulator is not clamped, electric leakage may occur.) . Always connect the
ground wire.
)OH[0DWFK Unit
(4). Electric wiring between the indoor and outdoor units Single-phase units
(9~24k)
N(1) 2 3
green
white black red (yellow-
(blue)
(brown) green)
Outdoor unit connection
)OH[0DWFKUnit
(5). Electric wiring of indoor unit side Remove the left cover plate and the
electric box cover then insert the end of the communication cord and the power
cable into the terminal board.
Electric box cover
Left side panel
Fig. 30
CAUTION!
æ . Tighten the power cord respectively on the terminal boards with screws.
Faulty connection may cause a fire.
ç . If the power supply are wired incorrectly, the air conditioner may be
damaged.
è . Connect the indoor unit connection cord properly based on the
corresponding marks as shown in Fig. 29.
é . Ground both the indoor and outdoor units by attaching a ground wire. ê .
Unit shall be grounded in compliance with the applicable local and national
codes.
6 Installation of Controllers
Refer to the Installation Manual of the controller for more details.
31
)OH[0DWFK Unit
7 Test Running
7.1 Trial Operation and Testing
(1). The meaning of error codes as shown below: Table 7
Number 1 2 3 4 5 6
Error code E1 E2 E3 E4 E5 E6
Error Compressor high pressure protection
Indoor anti-freeze protection Compressor low pressure protection, refrigerant
lack
protection and refrigerant colleting mode Compressor high discharge
temperature protection
AC over-current protection Communication error
7
E7
8
E8
Mode conflict Anti-high temperature protection
9
F1
Indoor ambient temperature sensor is open/short circuited
10
F2
Indoor evaporator temperature sensor is open/short circuited
11
F3
Outdoor ambient temperature sensor is open/short circuited
12
F4
Outdoor condenser temperature sensor is open/short circuited
13
F5
Outdoor discharge temperature sensor is open/short circuited
14
C5
Jumper cap malfunction protection
15
EE
Loading EEPROM malfunction
Note: If there’re other error codes, please contact qualified professionals
for service. When the unit is connected with the wired controller, the error
code will be simultaneously shown on it.
(2). Instructions to the Error Indicating Lamps on the Panel of the Floor
Ceiling Type Unit.
Fig. 31
)OH[0DWFK Unit States of the Indicating Lamps:
. Indicating Lamp of “POWER”: The indicating lamp will shine when power on,
while it will go out when power off.
. Indicating Lamp of “COOL” : The indicating lamp will shine when “COOL” is
activated, while it will go out when “COOL” is deactivated.
. Indicating Lamp of “HEAT”: The indicating lamp will shine when “HEAT” is
activated, while it will go out when “HEAT” is deactivated.
. Indicating Lamp of “TIMER” Timer indicator on indoor unit will be on when
timer ON is set under off status and timer OFF is set under on status. NOTE:
(1) If the light of indoor unit is turned off, when operating the remote
controller to send command, the display will be on for 3s and then off. (2)
When the wired controller is connected, the indoor unit display is invalid and
the unit won’t receive the remote control command.
)OH[0DWFK Unit
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)OH[0DWFK Unit
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