Samsung | MCM-D201N | Installation guide | Samsung MCM-D201N Installation guide

Samsung MCM-D201N Installation guide
AHU KIT
MCM-D201N
Air Conditioner
installation manual
imagine the possibilities
Thank you for purchasing this Samsung product.
Contents
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Name of each part and product dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Checking before using an AHU KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing an AHU KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting an address and installation option of AHU KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Installation check and test operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2
Safety Information
When installing the product, the following safety precautions must be taken for the safety of an installer and user.
Use R-410A refrigerant.
FOR INSTALLATION
ENGLISH
fWhen using R-410A, the inflow of moisture or foreign substances may greatly affect the capacity and reliability of the
product. Safety precautions must be taken when installing the refrigerant pipe.
fWhen charging mixed refrigerant, you should use liquid refrigerant (If you charge gaseous refrigerant, it may affect
the capacity and reliability of the product as a result of change in formation of the refrigerant.)
WARNING
Disconnect all the power supplies before installation, service, and cleaning.
The installation must be done by the manufacturer or a qualified person.
fInstallation by an unqualified person may result in a water leakage, electric shock or fire.
Install the unit correctly according to the installation manual.
fAn incorrect installation may result in a water leakage, electric shock or fire.
Manufacturer of AHU KIT is not responsible for accidents due to incorrect installation by an unqualified person. Also,
you should use only supplied or designated parts and tools for installation.
fIf you don’t use the designated parts and tools, product fall, water leakage, electric shock, or fire may occur.
When adding refrigerant, use the R-410A refrigerant only.
fUsing other types of refrigerant may result in product malfunction, explosion etc.
Do not use the pipe for R-22 refrigerant or flare parts.
When there is refrigerant leakage during installation, you must ventilate the area.
fToxic gas may be generated when refrigerant gas contacts with fire.
If the power cable or cord is damaged, it should be replaced by manufacturer or qualified person. The electric work
must be done by a certified person according to code and standard about electric installation, regulation for indoor
wiring and installation manual. In addition, the electric work must be in compliance with rated electric specification.
fVoltage drop, shortage of supply voltage, incorrect power supply work and use of uncertified cables may result in electric
shock or fire.
Arrange the cables between the AHU-KIT and outdoor unit so that the cover of electric part does not rise and then fix
the cover of the electric box to the product firmly.
fIf the cover is attached incompletely, a heat generation, electric shock or fire of the terminal may occur.
The Power supply to the kit should be through dedicated MCCB/ELB or ELCB.
fIf dedicated MCCB/ELB or ELCB is not provided, electric shock or fire may occur because of overcurrent or leakage current.
Install the supplied cables firmly. Fix them securely so that external force is not applied to the terminal.
fIf the connection or fixing is incomplete, heat generation, spark and fire may occur.
Make sure that the power for AHU-KIT is under maximum, and over minimum voltage.
fFailure to do so may result in product malfunction due to electrical component damage and functional degradation of a
part.
Use rated copper wire for the power cable.
Make sure electric wiring is correctly connected.
fFailure to do so may result in fire with overheating.
Make sure there is no leakage of refrigerant gas after finishing installation.
fWhen leakage of refrigerant gas contacts with fire, toxic gas may be generated.
3
Safety Information
FOR INSTALLATION
CAUTION
Proper earthing should be done as per the rating.
fDo not connect the ground wire to the gas pipe, water pipe, lightning rod or a ground wire of a telephone.
fIf the grounding is incomplete, electric shock may occur.
Follow the instructions in this manual to make sure that the condensed water dripping from the drain hose runs out
properly and insulate the drain pipe so that dew condensation is not generated.
fIf the drain work is incomplete, property damage may occur due to water leakage.
Install the power cable and communication cable of the AHU-KIT at least 1 m away from other electric appliances and
2 m away from lightning conductor.
fHowever, even 1 m away from an electric appliance, noise may be heard depending on radio wave condition.
Do not install the AHU-KIT in following places.
fThe place where much mineral oil, arsenic acid or steam exist.
The resin parts may be burned, which can result in falling part or water leakage.
fThe place where corrosive gas such as sulfurous acid gas from an exhaust pipe or air outlet can be generated.
The copper pipe or connection part may corrode, which may result in refrigerant leakage.
fThe place where there is a machine that generates electromagnetic waves.
The control system may have a problem which can result in abnormal operation.
fThe place where inflammable gas can leak, carbon fiber or inflammable dust floats, or volatile flammables are
handled.
If the gas leaks and stays around the main valve of the product, fire may occur.
fThe place where indoor unit corrosion may occur such as seashore or spa.
fThe place where external environment such as sunlight, rain, temperature, humidity, dust can directly affect the
product.
❋ The manufacturer is not responsible for the damage occurred by not keeping standard of the installation. (The cost
of the service will be charged.)
4
Name of each part and product dimension
Name of each part and product dimension
ASS'Y Control(Control part)
ENGLISH
(Unit : mm)
Place for AHU KIT PBA insertion
168
182
238
275
Wire saddle
350
385
(53)
Terminal block(20P)
ASS’Y EEV(Electronic Expansion Valve): Accessory (Ordered separately)
For detailed information of EEV installation, refer to the installation manual of ASS’Y EEV (MXD-A64K100E) which you
need to purchase additionally.
(Unit : mm)
MXD-A64K100E
185 mm
254 mm
EEV
Filter
EEV coil(7 m)
79 mm
IN/OUT Pipe Diameter :
0 12.7mm
5
Parts
Accessories (supplied)
Name
Pipe inlet/outlet
sensor(7 m)
Inlet sensor holder
(OD Ø6.8 mm)
Outlet sensor holder
(OD Ø7.8 mm)
Sensor fixing spring
Quantity
1
1
1
2
Name
Aluminum tape
Rubber tape
Insulator
Cable tie
Quantity
4
2
2
8
Shape
85 ㎜
85 ㎜
Shape
110 ㎜
100 ㎜
110 ㎜
170 ㎜
Additional accessory (not included)
* Wired remote controller
(MWR-WE10✴N)
1
❋ You need to purchase the wired remote controller additionally.
❋ Room temperature sensor is not provided. It should be provided additionally on the field.
6
Checking before using an AHU KIT
Structure diagram of an AHU-KIT
Outdoor unit
ENGLISH
Communication cable: F1,F2
ASS'Y EEV(Electronic Expansion Valve)
EEV Control
Liquid valve
Communication cable:
F3,F4
Return air
Exhaust Outdoor
air
air
Supply air
IN sensor
* Room Temperature
Sensor(mA or PT1000)
Gas pipe
Wired remote controller
OUT sensor
* Room temperature sensor is not provided. It should be provided additionally on the field.
7
Installing an AHU KIT
Installing ASS'Y Control
1. Check the installation location of ASS'Y Control.
fYou can choose either AHU attachment type or AHU separation type depending on the installation environment.
2. Check the length of connection cable of ASS'Y Control.
fThe length of provided connection cable is 7 m.
3. Make sure the location has waterproof and fire prevention structure.
fMake sure that the ASS'Y Control is not exposed to sunlight by covering with a case which has waterproof and fire
prevention structure.
Main PBA
Terminal Block
Functions of ASS'Y Control
fWhen using the ASS’Y Control alone, you can use EEV of 10~40 HP Capacity.
fASS'Y Control adjusts rate of flow for EEV refrigerant and performs control functions through communication with an
indoor unit or wired remote controller.
fThe contact signal for AHU fan operation is sent from ASS'Y Control. When AHU is in Cool/Heat/Fan mode, terminal block
No.1 and No.2 will output contact signal to turn the fan on. At this time, the output is contact signal and not be used for
power supply of motor. (Refer to p.12~13)
fThe terminal block No.3 and No.4 will receive the signal for fan operation status and the signal is the input signal which
AHU KIT control part receives. At this time, the input signal sholud be input as only OPEN/SHORT signal not the signal that
has separate voltage level. (Refer to p.10)
- When the fan operates normally: The terminal block No.3 and No.4 are SHORT status.
- When the fan does not operate: The terminal block No.3 and No.4 are OPEN status.
- Set SEG 21 of installation option 05 series to ‘1(Use)’ to use fan feedback for system protection. (Refer to p. 26)
fThe terminal block Vd/Vd is output defrost signal. (There exist some time delay.)
- When installing a defrost bypass valve, set SEG22 of 05 series installation option as “1”.
fConnect 220~240 V to the terminal block 1(L)/2(N).
fThe terminal block of communication cable (F1, F2) is connected with communication of Outdoor Unit. When installing
additional AHU KIT, the communication (F1, F2) should be connected with the communication (F1,F2) of AHU KIT which
is additionally installed. (Refer to p.12~13)
fThe communication cable(F3, F4) is the communication group of wired remote controller. (Refer to p.12~13)
fWhen installing 10 HP of ASS'Y Control, you shouldn't perform additional control of ASS'Y Control.
8
fFor HP setting, refer to SEG20 of 05 series in installation option section. (Refer to p.26)
fConnect room temperature sensor and discharge temperature sensor(optional) as mA or PT1000Ω type.
- When using the mA type sensor, connect to the terminal block +/-(mA).
- When using the PT1000Ω sensor, connect to the terminal block A/B/C .
- Set the types of room temperature sensor and discharge temperature sensor in SEG24 of 05 series installation option.
The types of the sensors must be same.
ENGLISH
No.
CONNECTOR
FUNCTION
NOTE
1
CN83/84/85
EEV
EEV 1/2/3
2
CN86
EEV
EEV 4
3
REM01
REMOCON RECEIVER
OPTION INPUT
4
CN82
EXTERNAL CHECK
5
CN43
SENSOR
6
CN21
DOWNLOAD
7
CN201
EEPROM PBA
8
CN311
2WIRE SUB PBA
1/3 PIN : COMP CHECK OUT
6/8 PIN : ERROR CHECK OUT
1/2 PIN : EVA IN
3/4 PIN : EVA OUT
S/W UPGRADE
9
Installing an AHU KIT
Wiring diagram for ASS’Y Control
❋ AHU KIT sensor displays about 10 KΩ of resistance value at room temperature.
10
Working on power supply
Connecting power/communication cable
fTo protect the product from external shock or water, put the power and communication cable into a power cable
protection box.
fConnect the power cable through MCCB/ELB or ELCB.
fMaintain more than 50 mm distance between the power cable and communication cable.
CAUTION
• The circuit diagram for wiring represents only an outline so the detailed information about actual installation
work is not described.
• In principle, AHU KIT power supply should be provided separately from an outdoor unit.
• Do not distribute the communication cable as communication error may occur.
• Do not distribute the power cable of terminal block for 2 AHU KITs from 1 AHU KIT.
• When peeling the sheath of power cable, use the appropriate tools to prevent damage inside the wire.
• Make sure that more than 20 mm of power and communication cable of AHU KIT is inside the electric parts.
• Communication cable should be installed separately from power cable or other communication cables.
Selecting a solderless terminal
1. Select a solderless terminal on the basis of nominal sectional area for a connecting power cable.
2. Insulate the solderless terminal and connection part of the connecting power cable with sheath.
Nominal sectional area for cables
1.5
(mm2)
Nominal diameter for screws (mm) 4
4
Standard dimension (mm) 6.6
8
B
Allowance (mm)
±0.2
Standard dimension (mm)
3.4
+0.3
D
Allowance (mm)
-0.2
Standard dimension (mm)
1.7
d1
Allowance (mm)
±0.2
E
Min.
4.1
F
Min.
6
L
Max.
16
Standard dimension (mm)
4.3
d2
+0.2
Allowance (mm)
0
t
Min.
0.7
2.5
4
4
4
6.6
8.5
±0.2
4.2
+0.3
-0.2
2.3
±0.2
6
6
17.5
4.3
+0.2
0
0.8
4
9.5
±0.2
5.6
+0.3
-0.2
3.4
±0.2
6
5
20
4.3
+0.2
0
0.9
Silver soldering
11
ENGLISH
fTurn the power off before working on the power supply.
fMaximum cable length and the amount of voltage drop for AHU KIT power/communication cables should be within
10 %.
fWhen installing the MCCB/ELB or ELCB, consider Power Rating of the AHU motor for correct capacity.
fConnect F3, F4 of AHU KIT terminal to Wired Remote Control.
Tightening torque (kgf•cm)
fUse the appropriate tools for wiring and make sure the wiring is connected tightly within
the tightening torque to withstand the external pressure. Arrange the wires so that cover or
M4
12.0~14.7
other parts does not get loose. Otherwise, it may cause overheating, electric shock or fire.
Installing an AHU KIT
Specification of electronic wire
Power supply
MCCB
ELB
XA
XA, 30 mmA
0.1 s
Max : 242V
Min : 198V
Power cable
2
2.5 mm
Earth cable
Communication cable
2
0.75~1.5 mm2
2.5 mm
fDecide the capacity of ELB and MCCB by below formula.
The capacity of ELB, MCCB X [A] = 1.25 X 1.1 X ∑Ai
❋
❋
❋
❋
X : The capacity of ELB, MCCB
∑Ai : Sum of Rating currents of each indoor unit.
Refer to each installation manual about the rating current of indoor unit.
Rating current
Unit
Model
Rating current
AHU KIT
MCM-D201N
0.5A
Connection diagram of ASS'Y Control
Installation example 1) Connection diagram of 1 outdoor unit + 1 AHU
Wired remote controller
1(L)
2(N)
+ mA -
A
B
C
4
F1 F2 F3 F4 V1 V2
1
2
Vd Vd
Defrost signal
MCCB/ELB or
ELCB
220~240 V
Supply
power
3
Sensor
(mA)
Sensor
(PT1000)
Contact signal for AHU
fan ON
F4: Wired remote controller communication cable
F3: Wired remote controller communication cable
F2: Outdoor unit communication cable
F1: Outdoor unit communication cable
Input contact signal for fan operation
status and off power.
12
Outdoor Unit
Installation example 2) AHU KIT + contact signal for AHU fan ON
1(L)
2(N)
+ mA -
A
B
C
3
4
F1 F2 F3 F4 V1 V2
1
2
Vd Vd
ENGLISH
AHU MOTOR
POWER SOURE
Contact signal for fan ON
AHU
controller
AHU MOTOR
❋ AHU KIT outputs only contact signals for FAN output.
Use the FAN output signal from the AHU controller to control the AHU FAN motor.
(Do not connect the FAN oupt signal directly to driving part.)
Installation example 3) Setting a room temperature sensor for installing multiple AHU KITs
SLAVE AHU Kit 3
A B C
SLAVE AHU Kit 2
F3 F4
A B C
MASTER AHU Kit
A B C
CAUTION
SLAVE AHU Kit 1
F3 F4
Room
temperature
sensor PT1000
F3 F4
A B C
F3 F4
F3 F4
Wired remote
controller
• For common AHU with multiple AHU KITS, sharing with 1 room temperature sensor is possible. The room
temperature sensor sharing uses the communication of wired remote controller, so Wired remote controller
should be installed. mA temperature sensor is the same as well. (Refer to SEG 24 of installation option 05 series
on page 26.)
• If one room temperature sensor is used for multiple AHU kits, MCM-D201N should only be used.
13
Installing an AHU KIT
Welding with nitrogen blowing
①
②
③
④
⑤
⑥
⑥
➀
Refrigerant pipe
➁
Location for welding
➂
Tape
➃
Hands valve
➄
Reducing valve
➅
Nitrogen gas
1. When welding a pipe, perform nitrozen blowing work.
- If you didn't blow the nitrogen for pipe welding, many oxides would be accumulated inside the pipe, which may cause
the valve of refrigerant system and compressor to operate abnormally.
2. When inputting the nitrogen gas, the rate of flow for nitrogen gas should be less than 0.02 MPa using the reducing
valve. (You should be able to feel the degree on your skin.)
Installing ASS'Y EEV(Not provided)
1. Check that ASS'Y EEV is installed inside the AHU.
- Since dew condensation may occur around the ASS'Y EEV pipe, install the ASS'Y EEV at a place where condensate water
can be drained.
2. Check whether IN and OUT pipe connection is correct.
3. Essential to check the ASS'Y EEV main body is installed vertically.
- ASS'Y EEV main body should be installed within the range of +/- 15˚ of standard for vertical installation. Otherwise, the
reliability of ASS'Y EEV cannot be guranteed.
4. Fix the EEV to AHU fixing groove firmly as shown in the image A below.
Standard for vertical
installation
30°
A
Insulator
Clamp
Clamp(Work area for AHU
manufacturer)
A
B
Insulator(Work area for AHU
manufacturer)
A: High pressure pipe from outdoor unit(IN)
- Diameter : Ø12.7 mm
B: Low pressure pipe to AHU heat exchanger(OUT)
- Diameter : Ø12.7 mm
14
Standard for vertical
installation
30°
EEV-1
Wire saddle
EEV-2
EEV-3
EEV-4
❋ EEV connector connection should be fixed to the wire saddle as shown in the image.
CAUTION
• New AHU KIT (ACM-D201N) has a different way to set the number of the indoor unit installation from the
previous AHU KIT (ACM-D201) and an outdoor unit.
• Be careful when setting the number of the indoor unit installation with an outdoor unit.
• When setting AHU KIT HP, refer to the SEG 20 of Installation option 05 series on page 26.
• Regardless of the AHU KIT HP setting, one indoor unit will be recognized.
15
ENGLISH
5. For checking EEV service, please attach a label sticker.
fAttach one label to upper middle part of ASS'Y EEV valve body and attach the same color of a lable sticker to valve wire
housing.
6. Connect the EEV termial block to exact places on PCB according to set HP.
fWhen the set HP of AHU KIT is set as 40 HP: Connect EEV-1, EEV-2, EEV-3 and EEV-4
fWhen the set HP of AHU KIT is set as 30 HP: Connect EEV-1, EEV-2, and EEV-3.
fWhen the set HP of AHU KIT is set as 20 HP: Connect EEV-1 and EEV-2
Installing an AHU KIT
Installing IN/OUT sensor
1.
2.
3.
4.
Attach the EVA IN sensor after the distributor and on the lowest temperature pipe of a heat exchanger.
Install the EVA OUT sensor 200 mm after the header of AHU heat exchanger as shown in the picture.
Insulate the EVA IN and OUT sensor so that it is not affected by wind.
Install the ROOM temperature sensor on the RA(Return Air) path of AHU.
Selecting the location of EVA_IN/OUT sensor
❋ Refrigerant flow
Cool mode
Distributor
Heat mode
1 EVA IN sensor
Header
”
200 ”
2 EVA OUT sensor
Example of ROOM temperature sensor installation
Return air
Exhaust air
Supply air
Outdoor air
Location of room temperature sensor
NOTE
16
• In principle, the sensor holder of EVA IN/OUT sensor should be welded at the designated place and then the EVA
IN/OUT sensor should be fixed with a clip.
• EVA IN/OUT sensor should be installed at the place where temperature of the heat exchanger air inlet or outlet
can be measured accurately.
Example of IN/OUT sensor installation 1
1. Chcek the sensor and sensor holder you will attach.
Diameter of a sensor
holder (mm)
ø 6.8
OUT sensor(Red)
ø7
ø 7.8
Clip for sensor fixing
Sensor holder
Insulator
IN/OUT sensor
ENGLISH
IN sensor(Blue)
Diameter of a
sensor (mm)
ø6
Type
NOTE
2. Attach the sensor holder to the selected location of a pipe.
NOTE
Attaching a sensor
• Attach the sensor at the place where temperature
detection is easily available. (Refer to p.16)
• Attach the sensor holder as closely as possible on the
surface of the pipe.
• Check whether the sensor you will attach is IN or OUT
sensor. (The size of IN/OUT sensor is different.)
Pipe
Sensor holder
3. Insert the sensor and the clip into the sensor holder.
IN/OUT sensor
Clip for sensor fixing
4. Bend the clip to fix it.
5. Attach the insulator around the attached sensor.
Insulator
17
Installing an AHU KIT
Example of IN/OUT sensor installation 2
1. Chcek the sensor and sensor holder you will attach.
NOTE
Type
Diameter of a
sensor (mm)
Diameter of a sensor
holder (mm)
IN sensor(Blue)
ø6
ø 6.8
OUT sensor(Red)
ø7
ø 7.8
IN/OUT
sensor
Insulator
Aluminum tape
Cable tie
Rubber tape
2. Attach the sensor closely to the pipe.
NOTE
Attaching a sensor
• Attach the sensor at the place where temperature
detection is easily available. (Refer to p.16)
• Attach the sensor as closely as possible on the surface of
the pipe.
• Do not use a sensor holder.
Pipe
Sensor
3. After attaching the sensor on the pipe, cover it with aluminum
tape.
IN/OUT sensor
Aluminum tape
4. Cover the sensor with rubber tape.
Rubber tape
IN/OUT sensor
5. Fix the sensor with cable ties.
Cable tie
6. Attach the insulator around the attached sensor.
Insulator
18
Setting an address and installation option of AHU KIT
fSet the address of an AHU KIT and installation option with remote controller options. Set each option separately since
you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice
when setting the address of an AHU KIT and installation option.
fThe reception part of a remote controller is built in the AHU KIT PBA.
ENGLISH
The procedure of option setting
Entering mode for
option setting
Option setting mode
Mode change
High Temp Button
High Fan Button
Low Temp Button
Low Fan Button
Step 1. Entering mode for option setting
1. Remove batteries from the remote controller.
2. While pressing the button of high temp and low temp at the same time, insert the batteries.
3. Check if you have entered the option setting status.
Step 2. The procedure of option setting
After entering the option setting status, select the option as listed below.
CAUTION
• Option setting is available from SEG1 to SEG 24
• SEG1, SEG7, SEG13, and SEG19 are not set as page option.
• Set the SEG2~SEG6, and SEG8~SEG12 as ON status and SEG14~18, and SEG20~24 as OFF status.
SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12
0
X
X
X
X
X
1
X
X
X
X
X
SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
2
X
X
X
X
X
3
X
X
X
X
X
On(SEG1~12) Off(SEG13~24)
19
Setting an address and installation option of AHU KIT
Option setting
1. Setting SEG2, SEG3 option
Press Low Fan button( ) to enter SEG2 value.
Press High Fan button( ) to enter SEG3 value.
Each time you press the button, p p … p will be selected in rotation.
Status
SEG2
SEG3
SEG4
SEG5
SEG6
SEG8
SEG9
SEG10
SEG11
SEG12
SEG14
SEG15
2. Setting Cool mode
Press
button to be changed to Cool mode in the ON status.
3. Setting SEG4, SEG5 option
Press Low Fan button( ) to enter SEG4 value.
Press High Fan button( ) to enter SEG5 value.
Each time you press the button, p p … p will be selected in rotation.
4. Setting Dry mode
Press
button to be changed to DRY mode in the ON status.
5. Setting SEG6, SEG8 option
Press Low Fan button( ) to enter SEG6 value.
Press High Fan button( ) to enter SEG8 value.
Each time you press the button, p p … p will be selected in rotation.
6. Setting Fan mode
Press
button to be changed to FAN mode in the ON status.
7. Setting SEG9, SEG10 option
Press Low Fan button( ) to enter SEG9 value.
Press High Fan button( ) to enter SEG10 value.
Each time you press the button, p p … p will be selected in rotation.
8. Setting Heat mode
button to be changed to HEAT mode in the ON status.
Press
9. Setting SEG11, SEG12 option
Press Low Fan button( ) to enter SEG11 value.
Press High Fan button( ) to enter SEG12 value.
Each time you press the button, p p … p will be selected in rotation.
10. Setting Auto mode
button to be changed to AUTO mode in the OFF status.
Press
11. Setting SEG14, SEG15 option
Press Low Fan button( ) to enter SEG14 value.
Press High Fan button( ) to enter SEG15 value.
Each time you press the button, p p … p will be selected in rotation.
20
Option setting
Status
12. Setting Cool mode
button to be change to Cool mode in the OFF status.
Press
SEG16
SEG17
SEG18
SEG20
SEG21
SEG22
SEG23
SEG24
ENGLISH
13. Setting SEG16, SEG17 option
Press Low Fan button( ) to enter SEG16 value.
Press High Fan button( ) to enter SEG17 value.
Each time you press the button, p p … p will be selected in rotation.
14. Setting Dry mode
Press
button to be change to Dry mode in the OFF status.
15. Setting SEG18, SEG20 option
Press Low Fan button( ) to enter SEG18 value.
Press High Fan button( ) to enter SEG20 value.
Each time you press the button, p p … p will be selected in rotation.
16. Setting Fan mode
Press
button to be change to Fan mode in the OFF status.
17. Setting SEG21, SEG22 option
Press Low Fan button( ) to enter SEG21 value.
Press High Fan button( ) to enter SEG22 value.
Each time you press the button, p p … p will be selected in rotation.
18. Setting Heat mode
Press
button to be change to HEAT mode in the OFF status.
19. Setting SEG23, SEG24 mode
Press Low Fan button( ) to enter SEG23 value.
Press High Fan button( ) to enter SEG24 value.
Each time you press the button, p p … p will be selected in rotation.
Step 3. Checking the option you have set
After setting option, press
button to check whether the option code you have entered is correct or not.
→
→
→
→
→
→
→
→
→
Step 4. Entering an option
Press the operation button
with the direction of a remote controller to set.
For the correct option setting, you must enter the option twice.
Step 5. Checking operation
1) Press the power reset button or the reset button of an outdoor unit to reset the settings.
2) Take the batteries out of the remote controller and insert them again and then press the
button.
21
Setting an address and installation option of AHU KIT
Setting an AHU KIT address (MAIN/RMC)
1. Check whether power is supplied or not.
- When the AHU KIT is not plugged in, there should be additional power supply.
2. The reception part of a remote controller is built in the AHU KIT PBA.
3. Each address of AHU KIT(MAIN/RMC) should be set according to installation conditions.
4. Assign each AHU KIT address(MAIN/RMC) with a remote controller.
- The default setting value of an AHU KIT address(MAIN/RMC) is “0A0000-100000-200000-300000”.
Option No. : 0AXXXX-1XXXXX-2XXXXX-3XXXXX
Option
SEG1
Explanation
SEG2
PAGE
SEG3
MODE
SEG4
SEG5
SEG6
Setting Main address
Hundreds' digit of an
Tens' digit of an address Unit digit of an address
address
Indication
Indication
Details
Indication
Details
Indication
Details
0~9
Hundred's
digit
0~9
Tens' digit
0~9
A unit digit
Remote
Controller
Display
Indication
Details
Indication
Details
Indication
and Details
0
A
Option
SEG7
SEG8
Explanation
PAGE
Details
No Main
0
address
Main
address
1
setting
mode
SEG9
SEG10
Setting RMC address
SEG11
SEG12
Group channel(*16)
Group address
Remote
Controller
Display
Indication
Indication
and Details
Details
-
Indication
0
1
1
CAUTION
22
Details
No RMC
address
RMC
address
setting
mode
-
Indication
Details
Indication
Details
RMC1
0~2
RMC2
0~F
• When “A”~”F” is entered to SEG5~6, the main address of AHU KIT will not be changed.
• If you set the SEG 3 as 0, the AHU KIT will maintain the existing MAIN ADDRESS even if you have entered the
option value of SEG5~6.
• If you set the SEG 9 as 0, the AHU KIT will maintain the existing RMC ADDRESS even if you have entered the
option value of SEG11~12.
Setting the installation option of an AHU KIT (suitable for the condition of each installation location)
ENGLISH
1. Check whether power is supplied or not.
- When the AHU KIT is not plugged in, there should be additional power supply.
2. The reception part of a remote controller is built in the AHU KIT PBA.
3. Set the installation option of an AHU KIT according to installation conditions.
- The default setting of an AHU KIT installation option is “020010-100000-200000-300000”.
4. Set the AHU KIT option with a remote controller.
■ 02 series installation option
SEG1
SEG2
SEG3
0
2
-
SEG7
SEG8
SEG9
SEG4
External room
temperature sensor/
Minimizing fan operation
when thermostat is off
SEG10
SEG5
SEG6
Central control
SEG12
SEG18
1
-
-
-
SEG13
SEG14
SEG16
2
External control
-
Buzzer
-
SEG19
SEG20
SEG15
External control
output
SE21
SEG11
EEV Step when
heating stops
SEG17
SEG22
Oil return/EEV step
of stopped defrost
mode
SEG23
SEG24
-
-
3
Compensation of
heating setting
-
-
fSEG5 central control option is basically set as 1 (Use), so you don’t need to set the central control option additionally.
When you exclude the indoor unit control from central control, change the setting as 0(Disuse).
fWhen you set the value other than the SEG setting values, it will be set as "0".
Option No. : 02XXXX-1XXXXX-2XXXXX-3XXXXX
Option
SEG1
SEG2
SEG3
Explanation
PAGE
MODE
Use of robot cleaning
SEG4(*1)
SEG5
SEG6
Use of external room temperature sensor/Minimizing
Use of central control FAN RPM compensation
fan operation when thermostat is off
Remote
Controller
Display
Indication Details
Indication
Details Indication
0
Indication and
Details
0
2
Details
Indication
Details
0
Use of
External room
temperature
sensor
Disuse
1
Use
Disuse
2
3
4
5
6
7
Disuse
Use
Disuse
Use
Disuse
Use
Heating Use
Heating Use
Cooling Use
Cooling Use
All Use
All Use
Disuse
Minimizing fan
operation when
thermostat is off
Indication
Details
0
Disuse
1
Use
Disuse
23
Setting an address and installation option of AHU KIT
Option
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
Explanation
PAGE
Use of drain pump
Use of hot water heater
Use of electronic heater
EEV Step when heating stops
Master / Slave
Remote
Controller
Display
Indication Details
Indication and
Details
Indication
0
1
1
Option
SEG13
Explanation
PAGE
SEG14
SEG15
Setting the output of external
Use of external control
control
Details
Default value
Noise decreasing
setting
SEG16
SEG17
S-Plasma ion
Buzzer control
SEG18
Number of hours using
filter
Remote
Controller
Display
Indication
Details
Indication and
Details
2
Option
SEG19
Explanation
PAGE
Indication
0
Details
Indication
Details
Disuse
0
Thermo on
ON/OFF
1
control
1
Operation on
2
OFF control
SEG20
SEG21
Offset of compensation for
heating installation
SEG22
Oil return/EEV step of
stopped defrost mode
Indication
0
Details
Use buzzer
1
Disuse buzzer
SEG23
SEG24
-
Remote
Controller
Display
Indication
Indication and
Details
24
Details
Indication
0
Details
Default
1
2°C(35.6°F)
2
5°C(41°F)
Indication
Details
Indication
Details
0
Default
value
0
-
1
Noise
decreasing
setting
3
(*1)
■ 05 series installation option
SEG1
SEG2
0
SEG4
SEG5
SEG8
SEG9
SEG10
SEG11
SEG12
-
-
SEG16
SEG17
SEG18
Temperature control
by using simple BMS
-
(When setting SEG3)
Compensation option
(When setting SEG3)
Standard for mode
for Long pipe or height
Time required for
difference between
change Cooling →
mode change
indoor units
Heating
1
SEG13
SEG6
(When setting SEG3)
Use of Auto Change (When setting SEG3) (When setting SEG3)
Standard for mode
Over for HR only in Standard heating temp. Standard cooling
change Heating →
Auto mode
Offset
temp. Offset
Cooling
5
SEG7
SEG3
SEG14
SEG15
2
-
-
-
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
Defrost signal
Skip the prevention
of cold air
Sensor
3
HP setting
Fan Feedback
■ 05 series installation option(Detailed)
Option No. : 05XXXX-1XXXXX-2XXXXX-3XXXXX
Option
SEG1
SEG2
Explanation
PAGE
MODE
SEG3
SEG4
SEG5
SEG6
(When setting SEG3)
(When setting SEG3)
(When setting SEG3)
Use of Auto Change Over
for HR only in Auto mode Standard heating temp. Offset Standard cooling temp. Offset Standard for mode change Heating → Cooling
Remote
Controller
Display
Indication Details Indication
Details
Indication
0
Indication
and Details
0
5
1
Details
Follow
product
options
Use Auto
Change Over
for HR only
Indication
Details
Indication
Details
Indication
Details
0
0
0
0
0
1
1
2
3
4
5
6
7
0.5
1
1.5
2
2.5
3
3.5
1
2
3
4
5
6
7
0.5
1
1.5
2
2.5
3
3.5
1
2
3
4
5
6
7
1.5
2
2.5
3
3.5
4
4.5
25
ENGLISH
Minimizing fan operation when thermostat is off
- Fan operates for 20 seconds at an interval of 5 minutes in heating mode.
- Fan stops when thermostat is off in cooling mode.
- Make sure to connect the wired remote controller or the external room temperature sensor if you use the function of
external room temperature sensor or minimizing fan operation. (In order to implement the functions the option of
using temperature sensor inside the wired remote controller must be set. Refer to the installation manual of the wired
remote controller.
Setting an address and installation option of AHU KIT
Option
SEG7
Explanation
PAGE
SEG8
SEG9
SEG10
(When setting SEG3)
(When setting SEG3)
Compensation option for Long
Standard for mode change Time required for mode pipe or height diffference between
indoor units
Cooling → Heating mode
change
SEG11
SEG12
SEG17
Simple BMS temperature
control
SEG18
Remote
Controller
Display
Indication Details Indication
Details
0
1
1
1.5
2
2
Indication
3
2.5
and Details
1
4
3
5
3.5
6
4
7
4.5
Option
SEG13
SEG14
Indication
0
1
2
3
4
5
6
7
-
Explanation
Details
5 min.
7 min.
9 min.
11 min.
13 min.
15 min.
20 min.
30 min.
SEG15
Indication
0
1
2
Details
Use default value
1) Height difference1) is
more than 30 m or
2) Distance2) is longer
than 110 m
1) Height difference1) is
15~30 m or
2) Distance2) is
50~110 m
SEG16
-
-
-
2
Indication
Details
Room
temperature
Discharge
1
temperature
SEG23
Skip the prevention of cold air
0
Option
Explanation
SEG19
PAGE
SEG20
HP setting
SEG21
Fan Feedback
SEG22
Defrost signal
SEG24
Sensor
Remote
Controller
Display
Indication Details Indication
Indication
and Details
3)
Details
Indication
Details
Indication
Details
Indication
Details
Indication
0
Default
(10 HP)
0
Disuse
0
Disuse
0
Disuse
0
1
10 HP
1
Use
1
Use
1
Use
1
2
20 HP
3
30 HP
4
40 HP
2
3
Details
Sharing the room and discharge
temperature value of a master
indoor unit
Master indoor unit
- Room temperature : PT1000 Ω
- Discharge temperature :
4~20 mA
Master indoor unit
- Room temperature : 4~20 mA
- Discharge temperature :
PT1000 Ω
Master indoor unit
- Room temperature : a wired
remote controller’s sensor
- Discharge temperature :
4~20 mA
1) Height difference : The difference of the height between the corresponding indoor uint and the indoor unit installed at the lowest place.
For example, When the indoor unit is installed 40 m(131.23 ft) higher than the indoor unit installed at the lowest place, select the option "1".
2) Distance : The difference between the pipe length of the indoor unit istalled at the farthest place from an outdoor unit and the pipe length of the corresponding indoor unit from an outdoor
unit. For example, when the farthest pipe length is 100 m(328 ft) and the corresponding indoor unit is 40 m(131.23 ft) away from an outdoor unit, select the option "2". (100 m(328 ft) 40 m(131.23 ft) = 60 m(196.85 ft))
3) Regardless of the AHU KIT HP setting, one indoor unit will be recognized. Therefore, be careful when setting the number of the indoor unit installation with an outdoor unit.
26
Additional information for SEG 3,4,5,6,8,9
Heating
Thermo On
Heating
Thermo Off
Cooling
Thermo On
ENGLISH
Cooling
Thermo Off
When the SEG 3 is set as "1" and follow Auto Change Over for HR only operation, it will operate as follows.
Standard temp. for Heating
→ Cooling
Temp.
c
b
Standard temp. for
Cooling
B
C
Ts
A
Set temp. for Auto
mode
D
a
Standard temp. for Heating
d
Standard temp.
for Cooling →
Heating
A : Set with SEG4(˚C)
B : Set with SEG5(˚C)
C : Set with SEG6(˚C)
D : Set with SEG8(˚C)
Cooling/Heating mode can be changed when Thermo Off status is maintained during the time with SEG9.
27
Changing a particular option
You can change each digit of set option.
Option
SEG1
SEG2
SEG3
Explanation
PAGE
MODE
Option mode to
change
SEG4
Tens' digit of an
option SEG to
change
SEG5
Unit digit of an
option SEG to
change
SEG6
Changed value
Remote
Controller
Display
Indication
and
Details
NOTE
Indication
Details
Indication
0
Details
D
Indication
Details
Option
mode
0~F
Indication
Tens’
digit of
SEG
Details
0~9
Indication
Unit
digit of
SEG
Details
Indication
Details
0~9
Changed
value
0~9
• When changing a digit of an AHU KIT address setting option, set the SEG3 as ‘A’.
• When changing a digit of an AHU KIT installation option, set the SEG3 as ‘2’.
Ex) When setting the ‘buzzer control’ into disuse status.
Option
SEG1
SEG2
SEG3
Explanation
PAGE
MODE
Option mode
to change
Indication
0
D
2
SEG4
SEG5
SEG6
Tens' digit of Unit digit of an
an option SEG option SEG to Changed value
to change
change
1
7
1
Setting discharge temperature control
1. In service mode of a wired remote control, you can set whether to use “Discharge temperature control” or not and also
can set targeted temperature of heating and cooling. Refer to “Installation/service setting mode” in a wired remote
controller’s installation manual.
2. If you set to use “Discharge temperature control”, a thermostat of a product is turned on or off according to room set
temperature and room temperature. Discharge temperature control is carried out while thermostat is on.
❋ The discharge temperature control can be set using DMS, also.
❋ Discharge temperature may not meet the desired temperature(set value) depending on conditions of the external air.
3. When the discharge temperature control is used, SEG21 of 01 series installation option must be set as “1”.
28
Trouble shooting
Initial check-up
2. Check the power voltage is AC198 V~AC264 V.
3. Check the voltage of each part has a problem.
f5 V-GND both terminals: DC 4.5~5.5 V
f12 V-GND both terminals: DC 11~13 V
Error on EEPROM
Outdoor unit display
NOTE
Description
Communication problem between EEPROM of AHU KIT and micom.
Reason
- EEPROM PBA OF AHU KIT ERROR(Physical problem of parts/circuit)
- Replace EEPROM PBA
• Wired remote controller will display the same error shown in the outdoor unit.
Error on the option of a remote controller
Outdoor unit display
Description
Reason
The remote controller option of AHU KIT is not the same.
Enter the remote controller option again.
29
ENGLISH
1. Check the connection status between an outdoor unit and the AHU-KIT.
fCheck that you have followed wiring method according to the circuit diagram or installation manual.
fCheck that AHU-KIT PBA is installed in a place where there is no influence from outdoor humidity, dust and temperature.
Trouble shooting
Error on a sensor
Error on the detachment of AHU-KIT heat exchanger EVA IN sensor
Outdoor unit display
Description
Reason
xxx
(xxx: Address of an indoor unit with an error)
Refer to the description below.
Detachment of indoor heat exchanger EVA IN piping sensor
1. Description
- In Cool mode
Tcond, out-Tair, out > 3°C
OK
Tair, in-TEVA, in > 4°C
NO
Tair, in-TEVA, out > 4°C
NO
Indoor unit operation or thermo ON during
operation of a compressor
OK
Error message
Error on the detachment of indoor unit heat exchanger EVA IN sensor
2. Checking method
- After checking the detachment status of AHU KIT heat exchanger EVA IN sensor, assemble the sensor.
Error on the detachment of AHU KIT heat exchanger EVA OUT sensor
Outdoor unit display
Description
Reason
xxx
(xxx: Address of an indoor unit with an error)
Refer to the description below.
Detachment of indoor heat exchanger EVA OUT piping sensor
1. Description
- In Cool mode
Tcond, out-Tair, out > 3°C
OK
Tair, in-TEVA, in > 4°C
OK
Tair, in-TEVA, out > 4°C
NO
Indoor unit operation or thermo ON during operation
of a compressor
OK
Error message
Error on detachment of indoor unit heat exchanger EVA OUT
sensor
2. Checking method
- After checking the detachment status of AHU KIT heat exchanger EVA OUT sensor, assemble the sensor.
NOTE
30
• Wired remote controller will display the same error shown in the outdoor unit.
Error on AHU KIT temperature sensor OPEN/SHORT
1. Checking method
(Room temperature sensor OPEN/SHORT)
Outdoor unit display
Reason
ENGLISH
Description
(Discharge temperature sensor OPEN/SHORT)
When the temperature sensor part of AHU KIT is detected as OPEN/SHORT
Incorrect installation of PT1000 temperature sensor or mA thermometer
Temperature feature table of PT1000
fAfter detaching the connector(CN41), measure the electric resistance between terminal A and terminal C, and
between terminal B and terminal C and then compare the table below. If the resistance is out of -30 °C ~ +50 °C
section, it will be displayed as error indication area.
Feature of PT1000 sensor
1200 [Ω]
PT1000
1150 [Ω]
Resistance
1100 [Ω]
1050 [Ω]
1000 [Ω]
950 [Ω]
900 [Ω]
850 [Ω]
800 [Ω]
-50 [℃] -40 [℃] -30 [℃] -20 [℃] -10 [℃]
0 [℃]
10 [℃] 20 [℃]
30 [℃]
40 [℃] 50 [℃]
Temperature
Feature table of mA thermometer
fAfter measuring the DC voltage of mA+/- terminal in connector(CN41) connection status, compare the voltage with
the table below. If the voltage is out of -50 °C ~ +50 °C section, it will be displayed as error indication area.
fThe range of 4 ~ 20 mA current temperature sensor : -50 ~ +50 °C
Feature of mA thermometer
5.00 [V]
4.50 [V]
Therminal voltage
4.00 [V]
Voltage
3.50 [V]
3.00 [V]
2.50 [V]
2.00 [V]
1.50 [V]
1.00 [V]
0.50 [V]
0.00 [V]
-80 [℃]
-60 [℃]
-40 [℃]
-20 [℃]
0 [℃]
20 [℃]
40 [℃]
60 [℃]
Temperature
NOTE
• Wired remote controller will display the same error shown in the outdoor unit.
31
Trouble shooting
Error on AHU KIT temperature senor OPEN/SHORT
1. Checking method
(EVA IN sensor OPEN/SHORT)
(EVA OUT sensor OPEN/SHORT)
Outdoor unit display
Description
When the temperature sensor part of AHU KIT is OPEN/SHORT
Reason
Loose contact between a sensor and PBA and defective sensor
Yes
Is the temperature sensor
connector of AHU KIT EVA IN/OUT
detached from PBA?
No
After connecting the connector to PBA, operate
it again.
Temperature(°C)
Resistance(kΩ)
70
2.2
60
3.0
50
4.2
40
5.8
After detaching the temperature sensor connector
of AHU KIT EVA IN/OUT from the PBA, measure the
electrical resistance between both terminals.
Yes
At this time, does the resistance value
largely get out of the right table?
No
Yes
32
8.3
20
12.1
10
18.0
0
27.3
-10
43.0
Since the temperature sensor of AHU KIT EVA IN/OUT
itself is defective, replace it.
After replacing the PBA, operate the product again.
NOTE
30
• Wired remote controller will display the same error shown in the outdoor unit.
Error on a fan
Outdoor unit display
When the feedback signal is maintained as OPEN status for 10 seconds after outputting the
fan operation signal from ASS’Y Control ( For AHU KIT)
Description
ENGLISH
• Fan operation of AHU KIT is abnormal.
• The circuit to detect the fan feedback signal of AHU KIT is not formed or
misconnected.
Reason
1. Checking method
Set the 05 series SEG21 of AHU PBA installation option as “0”.
(It will not detect the fan feedback signal.)
Have you configured the system
to receive the fan feedback signal?
(Refer to p.12~13)
No
No
Do you need the fan feedback?
Yes
Yes
Connect the feedback signal to fan check terminal of
ASS’Y control.
(It consist of contact signal)
Check the 05 series SEG21 in installation option of ASS’Y
control is set as “1”.
Is the fan operating?
No
Check the fan control of AHU.
Yes
When the AHU KIT fan is in operation,
does the fan feedback signal provide
the contact signal in SHORT status?
No
Form the control circuit so that the proper fan feedback
signal is output depending on fan operation status.
Yes
Replace the ASS’Y Control PBA.
NOTE
• Only the contact signal without power supply should be entered to detecting terminal of fan feedback signal. If
voltage or current is connected other than the contact signal without power supply, the ASS’Y Control may be
damaged.
33
Trouble shooting
Error on EEV step control
Outdoor unit display
N/A
In cool mode, EEV step is controlled to minimum 230 steps and maximum 1700 steps. In
heat mode, the EEV step is controlled to minimum 1000 steps.
Description
•
•
•
•
Reason
The location of EVA IN/OUT sensor is not correct.
EEV coil is reversed.
All or part of EEV coil is detached.
Refrigerant is overcharged.
1. Checking method
Is the location of EVA IN sensor correct?
No
Attach the EVA IN sensor to the branched pipe
between the distributor and the heat exchanger and to
the close part of the heat exchanger.
Check the status of sensor attachment. (Refer to p.16)
No
Attach the EVA OUT sensor to the rear part of the
heat exchanger header. Check the status of sensor
attachment. (Refer to p.16)
Yes
Is the location of EVA OUT sensor correct?
Yes
Is the EEV wire connected to PBA?
No
Check that the EEV wire is firmly connected to the PBA
connector.
Yes
Is the amount of added refrigerant enough?
Yes
Replace the ASS’Y control PBA.
34
No
Charge the appropriate amount of refrigerant.
Error on tracking
Communication error between AHU KIT and an outdoor unit during the tracking (During initial operation)
Outdoor unit display
Description
Communication error between AHU KIT and an outdoor unit
ENGLISH
Reason
Refer to the diagram below.
1. Checking method
Compare and check the setting value for the number of AHU
KIT installation with outdoor unit PBA and the real number of
AHU KIT installation.
Is the actual number of AHU KIT installation the
same as the setting value for the number of
AHU-KIT installation?
❈ Regardless of setting HP capacity, the number of AHU Kit
installation is recognized as one indoor unit.
No
Yes
After setting the switch for the number of AHU KIT
installation set up on the outdoor unit correctly, press
the reset key(k3) of outdoor unit PBA to restart the
tracking.
Press the reset key(K3) of outdoor unit PBA and view the
display part to check the number of AHU KIT which responds
to the tracking.
Is there a response from AHU KIT on the display
part during the tracking?
No
After removing the communication cable which is connected
to AHU KIT from an outdoor unit, measure the 2 wires on the
outdoor unit with SCOPE.
Yes
After 2 minutes, check whether the PBA address setting
is repeated by finding the AHU KIT that displays the
communication error.
− When the AHU KIT address is repeated, communication
error may occur. In this case, the communication error
may occur with all the AHU KITs(more than 2) whose
address setting is incorrectly set.
Yes
Is the voltage between 2 wires square wave
that is more than DC±0.7?
Yes
− Check the communication cable connection between an
outdoor unit and AHU KIT and between indoor units.
− When there is no problem, check the AHU KIT by
connecting one by one.
− Replace the PBA of AHU KIT for the problem.
If there is no problem with the address, check the
communication cable and replace the AHU KIT PBA.
No
After checking the communication cable or the
connector of outdoor unit PBA, replace the PBA.
NOTE
• Wired remote controller will display the
same error shown in the outdoor unit.
35
Trouble shooting
Error on communication between AHU KIT and an outdoor unit after the tracking (During operation)
Outdoor unit display
Description
Reason
When the communication between the AHU KIT and an outdoor unit is not available for 2 minutes during operation. (All rooms)
The communication error between AHU KIT and an outdoor unit or the problem with the setting switch for the number of AHU KIT installation.
1. Checking method
Press the reset key(K3) of outdoor unit PBA and check the
display part.
Yes
Is there a response from AHU KIT on the display
part during the tracking?
No
After removing the communication cable which is connected
to AHU KIT from an outdoor unvit, measure the 2 wires on the
outdoor unit with SCOPE.
Yes
After 2 minutes, check whether the PBA address setting
is repeated by finding the AHU KIT that displays the
communication error.
− When the AHU KIT address is repeated, communication
error may occur. In this case, the communication error may
occur with all the AHU KITs(more than 2) whose address
setting is incorrectly set.
If there is no problem with the address, check the
communication cable and replace the AHU KIT PBA.
No
Is the voltage between 2 wires square wave
that is more than DC±0.7 as shown in the
image below?
After checking the communication cable or the
connector of outdoor unit PBA, replace the PBA.
Yes
− Check the communication cable connection between an
outdoor unit and AHU KIT and between indoor units.
− When there is no problem, check the AHU KIT by
connecting one by one.
− Replace the PBA of AHU KIT with a problem.
• Wired remote controller will display the same error shown in the outdoor unit.
NOTE
Good
+0.7V
-0.7V
36
Bad
Installation check and test operation
Checking AHU KIT installation
2. Check that the ASS’Y EEV is correctly installed.
- Check that ASS'Y EEV is installed inside the AHU.
- Check whether IN and OUT pipe connection is correct.
- Must check the ASS'Y EEV main body is installed vertically.
- Check that the ASS'Y EEV is installed at the place where condensate water can be drained.
3. Check that the EVA IN/OUT sensor is correctly installed.
- After attaching the EVA IN sensor after the distributor and on the lowest temperature pipe of a heat exchanger, check
that you have insulated the attached sensor.
- After installing the EVA OUT sensor 200 mm after the header of AHU heat exchanger, check that you have insulated the
attached sensor.
CAUTION
• ASS’Y Control should be installed with the CASE that has water proof and fire prevention function.
Test operation
1. Before supplying power, measure the grounding between the power terminal(1phase: L, N) and AHU KIT using the
DC 500 V insulation-resistance tester.
- Measured value should be more than 30 MΩ.
CAUTION
• Do not measure the communication terminal as the communication circuit may get damaged.
• For the communication terminal, check the short circuit using a general circuit tester.
2. Before supplying power, check the voltage of the power(L, N), and turn the switch on.
N
220-240 V
L
<MCCB/ELB or ELCB>
3. After finishing and checking installation and the items below, check that the AHU KIT operates correctly.
- The firmness of AHU KIT installation environment and safety
- Thermal resistance of insulator for refrigerant pipe
- Leakage of refrigerant gas
- Drainage status
- Power connection status
- Connection status with a circuit breaker and grounding status
- Correct operation for each operation mode
37
ENGLISH
1. Check that ASS’Y Control is correctly installed.
- You can choose either AHU attachment type or AHU separation type.
- Check the length of connection cable of ASS'Y Control is correct.
- Check that the connection of ASS’Y Control connecting cable is correct.
- Make sure the location has waterproof and fire prevention structure with a specially designed case. ( For the separation
type, it is essential.)
- Make sure the ASS’Y Control is not exposed to sunlight or rain.
MEMO
38
MEMO
ENGLISH
39
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