Samsung MCM-D201N User manual

AHU KIT
MCM-D201N
Air Conditioner
installation manual
imagine the possibilities
Thank you for purchasing this Samsung product.

2
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

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ENGLISH
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.
f When using R-410A, the inow of moisture or foreign substances may greatly aect the capacity and reliability of the
product. Safety precautions must be taken when installing the refrigerant pipe.
f When charging mixed refrigerant, you should use liquid refrigerant (If you charge gaseous refrigerant, it may aect
the capacity and reliability of the product as a result of change in formation of the refrigerant.)
FOR INSTALLATION WARNING
Disconnect all the power supplies before installation, service, and cleaning.
The installation must be done by the manufacturer or a qualied person.
f Installation by an unqualied person may result in a water leakage, electric shock or re.
Install the unit correctly according to the installation manual.
f An incorrect installation may result in a water leakage, electric shock or re.
Manufacturer of AHU KIT is not responsible for accidents due to incorrect installation by an unqualied person. Also,
you should use only supplied or designated parts and tools for installation.
f If you don’t use the designated parts and tools, product fall, water leakage, electric shock, or re may occur.
When adding refrigerant, use the R-410A refrigerant only.
f Using other types of refrigerant may result in product malfunction, explosion etc.
Do not use the pipe for R-22 refrigerant or are parts.
When there is refrigerant leakage during installation, you must ventilate the area.
f Toxic gas may be generated when refrigerant gas contacts with re.
If the power cable or cord is damaged, it should be replaced by manufacturer or qualied person. The electric work
must be done by a certied 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 specication.
f Voltage drop, shortage of supply voltage, incorrect power supply work and use of uncertied cables may result in electric
shock or re.
Arrange the cables between the AHU-KIT and outdoor unit so that the cover of electric part does not rise and then x
the cover of the electric box to the product rmly.
f If the cover is attached incompletely, a heat generation, electric shock or re of the terminal may occur.
The Power supply to the kit should be through dedicated MCCB/ELB or ELCB.
f If dedicated MCCB/ELB or ELCB is not provided, electric shock or re may occur because of overcurrent or leakage current.
Install the supplied cables rmly. Fix them securely so that external force is not applied to the terminal.
f If the connection or xing is incomplete, heat generation, spark and re may occur.
Make sure that the power for AHU-KIT is under maximum, and over minimum voltage.
f Failure 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.
f Failure to do so may result in re with overheating.
Make sure there is no leakage of refrigerant gas after nishing installation.
f When leakage of refrigerant gas contacts with re, toxic gas may be generated.

4
Safety Information
FOR INSTALLATION CAUTION
Proper earthing should be done as per the rating.
f Do not connect the ground wire to the gas pipe, water pipe, lightning rod or a ground wire of a telephone.
f If 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.
f If 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.
f However, 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.
f The 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.
f The 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.
f The place where there is a machine that generates electromagnetic waves.
The control system may have a problem which can result in abnormal operation.
f The place where inammable gas can leak, carbon ber or inammable dust oats, or volatile ammables are
handled.
If the gas leaks and stays around the main valve of the product, re may occur.
f The place where indoor unit corrosion may occur such as seashore or spa.
f The place where external environment such as sunlight, rain, temperature, humidity, dust can directly aect 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.)

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ENGLISH
Name of each part and product dimension
Name of each part and product dimension
ASS'Y Control(Control part)
Place for AHU KIT PBA insertion
Wire saddle
Terminal block(20P)
(Unit : mm)
350
385
(53)
168 182 238 275
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.
EEV coil(7m)
EEV
Filter
185 mm
254 mm
79 mm
(Unit : mm)
IN/OUT Pipe Diameter :
 12.7mm
MXD-A64K100E

6
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 xing spring
Quantity 1 1 1 2
Shape
Name Aluminum tape Rubber tape Insulator Cable tie
Quantity 4 2 2 8
Shape
110 ㎜
85 ㎜
110 ㎜
85 ㎜
170 ㎜
100 ㎜
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 eld.

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ENGLISH
Checking before using an AHU KIT
Structure diagram of an AHU-KIT
Gas pipe
Return air Exhaust
air
Outdoor
air
Outdoor unit
Communication cable: F1,F2
EEV Control
Communication cable:
F3,F4
Wired remote controller
IN sensor
OUT sensor
Supply air
* Room Temperature
Sensor(mA or PT1000)
Liquid valve
ASS'Y EEV(Electronic Expansion Valve)
* Room temperature sensor is not provided. It should be provided additionally on the eld.

8
Installing an AHU KIT
Installing ASS'Y Control
1. Check the installation location of ASS'Y Control.
f You 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.
f The length of provided connection cable is 7m.
3. Make sure the location has waterproof and re prevention structure.
f Make sure that the ASS'Y Control is not exposed to sunlight by covering with a case which has waterproof and re
prevention structure.
Terminal Block
Main PBA
Functions of ASS'Y Control
f When using the ASS’Y Control alone, you can use EEV of 10~40 HP Capacity.
f ASS'Y Control adjusts rate of ow for EEV refrigerant and performs control functions through communication with an
indoor unit or wired remote controller.
f The 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)
f The 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)
f The 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”.
f Connect 220~240V to the terminal block 1(L)/2(N).
f The 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)
f The communication cable(F3, F4) is the communication group of wired remote controller. (Refer to p.12~13)
f When installing 10 HP of ASS'Y Control, you shouldn't perform additional control of ASS'Y Control.

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ENGLISH
f For HP setting, refer to SEG20 of 05 series in installation option section. (Refer to p.26)
f Connect room temperature sensor and discharge temperature sensor(optional) as mA or PT1000 type.
- When using the mA type sensor, connect to the terminal block +/-(mA).
- When using the PT1000 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.
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
1/3 PIN : COMP CHECK OUT
6/8 PIN : ERROR CHECK OUT
5 CN43 SENSOR 1/2 PIN : EVA IN
3/4 PIN : EVA OUT
6 CN21 DOWNLOAD S/W UPGRADE
7 CN201 EEPROM PBA
8 CN311 2WIRE SUB PBA

10
Installing an AHU KIT
Wiring diagram for ASS’Y Control
❋ AHU KIT sensor displays about 10KΩ of resistance value at room temperature.

11
ENGLISH
Working on power supply
Connecting power/communication cable
f Turn the power o before working on the power supply.
f Maximum cable length and the amount of voltage drop for AHU KIT power/communication cables should be within
10%.
f When installing the MCCB/ELB or ELCB, consider Power Rating of the AHU motor for correct capacity.
f Connect F3, F4 of AHU KIT terminal to Wired Remote Control.
f Use 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
other parts does not get loose. Otherwise, it may cause overheating, electric shock or re.
Tightening torque (kgf•cm)
M4 12.0~14.7
f To protect the product from external shock or water, put the power and communication cable into a power cable
protection box.
f Connect the power cable through MCCB/ELB or ELCB.
f Maintain more than 50mm distance between the power cable and communication cable.
• 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.
CAUTION
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
(mm2)1.5 2.5 4
Silver soldering
Nominal diameter for screws (mm) 4444 4
BStandard dimension (mm) 6.6 8 6.6 8.5 9.5
Allowance (mm) ±0.2 ±0.2 ±0.2
D
Standard dimension (mm) 3.4 4.2 5.6
Allowance (mm) +0.3
-0.2
+0.3
-0.2
+0.3
-0.2
d1 Standard dimension (mm) 1.7 2.3 3.4
Allowance (mm) ±0.2 ±0.2 ±0.2
E Min. 4.1 6 6
F Min. 665
L Max. 16 17.5 20
d2
Standard dimension (mm) 4.3 4.3 4.3
Allowance (mm) +0.2
0
+0.2
0
+0.2
0
t Min. 0.7 0.8 0.9

12
Installing an AHU KIT
Specication of electronic wire
Power supply MCCB ELB Power cable Earth cable Communication cable
Max : 242V
Min : 198V XA XA, 30 mmA
0.1 s 2.5 mm2 2.5 mm2 0.75~1.5 mm2
f Decide 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
1(L) 2(N)
F1 F2 F3 F4 V1 V2 1 243CBA mA -+ Vd Vd
MCCB/ELB or
ELCB
220~240V
Supply
power
Sensor
(mA)
Sensor
(PT1000)
Defrost signal
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 o power.
Wired remote controller Outdoor Unit

13
ENGLISH
Installation example 2) AHU KIT + contact signal for AHU fan ON
1(L) 2(N)
F1 F2 F3 F4 V1 V2 1 243CBA mA -+ Vd Vd
Contact signal for fan ON
AHU MOTOR
AHU
controller
AHU MOTOR
POWER SOURE
❋ 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
ABC
ABC
ABC
ABC
F3 F4
F3 F4
F3 F4
F3 F4
F3 F4
Wired remote
controller
SLAVE AHU Kit 3
MASTER AHU Kit
SLAVE AHU Kit 2
SLAVE AHU Kit 1
Room
temperature
sensor PT1000
• 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.
CAUTION

14
Installing an AHU KIT
Welding with nitrogen blowing
① ③ ④ ⑤
⑥
⑥
②
➀Refrigerant pipe
➁Location for welding
➂Tape
➃Hands valve
➄Reducing valve
➅Nitrogen 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 ow 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 xing groove rmly as shown in the image A below.
AB
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
30°
Standard for vertical
installation
Standard for vertical
installation
30°
Insulator
Clamp(Work area for AHU
manufacturer)
Insulator(Work area for AHU
manufacturer)
Clamp
A

15
ENGLISH
5. For checking EEV service, please attach a label sticker.
f Attach 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.
f When the set HP of AHU KIT is set as 40 HP: Connect EEV-1, EEV-2, EEV-3 and EEV-4
f When the set HP of AHU KIT is set as 30 HP: Connect EEV-1, EEV-2, and EEV-3.
f When the set HP of AHU KIT is set as 20 HP: Connect EEV-1 and EEV-2
EEV-1 EEV-3EEV-2
EEV-4
Wire saddle
❋ EEV connector connection should be xed to the wire saddle as shown in the image.
• New AHU KIT (ACM-D201N) has a dierent 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.
CAUTION

16
Installing an AHU KIT
Installing IN/OUT sensor
1. Attach the EVA IN sensor after the distributor and on the lowest temperature pipe of a heat exchanger.
2. Install the EVA OUT sensor 200mm after the header of AHU heat exchanger as shown in the picture.
3. Insulate the EVA IN and OUT sensor so that it is not aected by wind.
4. Install the ROOM temperature sensor on the RA(Return Air) path of AHU.
Selecting the location of EVA_IN/OUT sensor
200 
2 EVA OUT sensor
1 EVA IN sensor
Header
Distributor
Cool mode
Heat mode
❋ Refrigerant ow
Example of ROOM temperature sensor installation
Location of room temperature sensor
Return air
Outdoor air
Exhaust air Supply air
• 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 xed 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.
NOTE

17
ENGLISH
Example of IN/OUT sensor installation 1
1. Chcek the sensor and sensor holder you will attach.
Clip for sensor xing
Insulator
Sensor holder
IN/OUT sensor
Type Diameter of a
sensor (mm)
Diameter of a sensor
holder (mm)
IN sensor(Blue) ø 6 ø 6.8
OUT sensor(Red) ø 7 ø 7.8
NOTE
2. Attach the sensor holder to the selected location of a pipe.
Sensor holder
Pipe
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 dierent.)
NOTE
3. Insert the sensor and the clip into the sensor holder.
IN/OUT sensor
Clip for sensor xing
4. Bend the clip to x it.
5. Attach the insulator around the attached sensor.
Insulator

18
Installing an AHU KIT
Example of IN/OUT sensor installation 2
1. Chcek the sensor and sensor holder you will attach.
Type Diameter of a
sensor (mm)
Diameter of a sensor
holder (mm)
IN sensor(Blue) ø 6 ø 6.8
OUT sensor(Red) ø 7 ø 7.8
NOTE
Insulator
Aluminum tape Rubber tape
IN/OUT
sensor Cable tie
2. Attach the sensor closely to the pipe.
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.
NOTE
Sensor
Pipe
3. After attaching the sensor on the pipe, cover it with aluminum
tape.
Aluminum tape
IN/OUT sensor
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

19
ENGLISH
Setting an address and installation option of AHU KIT
f Set 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.
f The reception part of a remote controller is built in the AHU KIT PBA.
The procedure of option setting
High Temp Button High Fan Button
Mode change
Low Temp Button Low Fan Button
Entering mode for
option setting
Option setting mode
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.
• 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
0XXXXX1XXXXX
SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
2XXXXX3XXXXX
CAUTION
On(SEG1~12) O(SEG13~24)

20
Setting an address and installation option of AHU KIT
Option setting Status
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, pp… pwill be selected in rotation. SEG2 SEG3
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, pp… pwill be selected in rotation. SEG4 SEG5
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, pp… pwill be selected in rotation. SEG6 SEG8
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, pp… pwill be selected in rotation. SEG9 SEG10
8. Setting Heat mode
Press button to be changed to HEAT mode in the ON status.
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, pp… pwill be selected in rotation. SEG11 SEG12
10. Setting Auto mode
Press button to be changed to AUTO mode in the OFF status.
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, pp… pwill be selected in rotation. SEG14 SEG15