LG PDRYCB300 User manual

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Please read this usage/installation manual completely before installing the product.
Usage/Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.
Dry Contact For Thermostat
PDRYCB300
INSTALLATION MANUAL
AIR
CONDITIONER
P/NO : MFL69265517
ENGLISH

2Dry contact for thermostat
Dry contact for thermostat Owner’s & installation manual
TABLE OF CONTENTS
■Safety Precautions .............................................................3~5
■Name of each part ..................................................................6
■Installation Method .............................................................7~8
Installation.................................................................................................7
■Setting and using method ................................................9~20
1. Power supply and indoor unit connection ...........................................9
2. Setting of Contact Signal Input ..........................................................10
3. Setting of ‘SETTING_SW’..................................................................11
4. Setting of ‘TEMP_SW’ .......................................................................14
5. Installation of thermostat....................................................................15
6. Indoor unit monitoring ........................................................................20

Safety Precautions
Installation manual 3
ENGLISH
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■Installation
Service
Center
Service
Center
Don’t touch with the hands
while the power is on.
• Cause fire, electric shock,
explosion or injury.
Product installation must
be referred to a service
center or installation shop.
• Cause fire, electric shock,
explosion or injury.
Request installation from
installation shop or service
center when reinstalling
the product.
• Cause fire, electric shock,
explosion or injury.

Safety Precautions
4Dry contact for thermostat
Standardized
product
Do not install the product
in the place where rain can
get to the product.
• Cause product failure
Do not install the unit in
humid locations.
• Cause product failure
Do not put the product
closer to fire.
• Cause fire
Do not install in a place
that cannot withstand the
weight of the product.
• The product may get
damaged or may break.
Do not install the product
to a place that generates
oil, steam, salt, sulfuric
gas, etc.
• Cause the product’s
deformation or failure.
Use standardized Product.
• Cause product failure
Do not change or extend
power lines arbitrarily.
• Cause fire or electric shock.
Do not give a shock to the
product.
• If you give a shock to the
product, it may cause the
product’s failure.
Do not use a heater near
the power line.
• Cause fire or electric shock.
■Operation

Safety Precautions
Installation manual 5
ENGLISH
Service
Center
STOP
Do not spill water inside of
the product.
• Cause electric shock or
breakdown.
If the product has been
inundated, you must refer to
a service center or
installation shop.
• It can cause a fire.
Children and elderly use the
product under the
guardian’s supervision.
• Cause accidents and product
failures.
Do not use for special
purpose / place such as
conserving flora and fauna,
precision instruments, art.
• Otherwise, it can cause property
damage.
Remove the power plug
when cleaning.
• Cause fire or electric shock.
Do not place heavy objects
on the power line.
• Cause fire or electric shock.
Do not disassemble, repair,
or modify the product.
• Cause fire or electric shock.
Do not touch with wet
hands.
• Cause fire or electric shock.

Name of each part
6Dry contact for thermostat
Name of each part
1. CN_INDOOR : Connector for indoor unit
2. CHANGE_OVER_SW : Switch to select External Voltage or Non Voltage for input contact signal
3. CN_OUT(O1,O2) : Output terminal to show whether the indoor unit is operating (Relay contact)
4. CN_OUT(E3,E4) : Output terminal to show whether there is an error with the indoor unit (Relay contact)
5. TEMP_SW : Switch to set the desired temperature of the indoor unit
6. SETTING_SW : Switch to select whether to use set function of Dry contact
7. CN_Ther/oper : Input terminal for thermo & operation signal
8. CN_MODE : Input terminal for Mode signal
9. CN_WIND : Input terminal for Wind signal
10. DISPLAY_LED : LED to display the status of Dry contact Module
11. RESET_SW : Reset switch
DRY CONTACT FOR THERMOSTAT
8
9
10
6
5
3
4
1
7
2
11
PCB
Front Case Rear Case
ISO View
Side
Cable(1 EA)
(For Connecting with indoor unit)
Installation Manual
Side
* Others :
Screw 4 EA(For installation)
Clamp 4 EA(For installation)

Installation Method
Installation manual 7
Installation
1) Loosen and remove two screws that secure the
product.
2) Position the rear case to the direction towards to the
connector for convenient cable arrangement.
3) Secure the rear case on the installation place using the
supplied fixing screws.
4) Remove knock out shapes on the rear case (4-sided)
according to the connector’s size and direction.
ENGLISH
Installation Method

8Dry contact for thermostat
Installation Method
5) Connect the connection wires properly according to the connection method. (Refer to the instruction
and set-up description)
6) Set the switch according to the setting method. (Refer to the instruction and set-up description)
7) Tighten the fixing screws on the top and bottom of the case.
1. Install the product on flat surface and install anchoring screws at more than 2 places. Otherwise
the central controller may not be anchored properly.
2. Do not tighten anchoring screws too tightly. It may cause deformation of the case.
3. Do not deform the case at random. It may cause malfunction of the central controller.

Installation manual 9
ENGLISH
Setting and using method
Setting and using method
1. Power supply and indoor unit connection
After change any Dry contact setting, then you must press RESET switch to reflect the setting.
■
When using the Dry contact for communication independently
Indoor unit
PCB
CHANGEOVER_SW
RESET_SW
CN_Ther/Oper CN_MODE
CN_WIND
CN_INDOOR
DISPLAY_LED
TEMP_SW
SETTING_SW
CN_OUT
CN_PI485

10 Dry contact for thermostat
Setting and using method
2. Setting of Contact Signal Input
■For input contact closure only(No power input)
■For input contact voltage : DC 12 V, 24 V~
Notes
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
NOT USE
CHANGE
OVER_SW
VOLT NON
VOLT
NOT USE
CHANGE
OVER_SW
VOLT NON
VOLT
Connect separate
External voltage of
DC 12 V, 24 V~
jvtt
{ v jvtt
mhu
olh{ jvvs
sv~
tpkksl opno
COMM
Themal Operation COMM
FAN
HEAT COOL
LOW
MIDDLE HIGH
Thermostat
LG does not
supply this section
(Field supply)
Thermostat
LG does not
supply this section
(Field supply)
CHANGEOVER_SW
RESET_SW
CN_Ther/Oper CN_MODE
CN_WIND
CN_INDOOR
DISPLAY_LED
TEMP_SW
SETTING_SW
CN_OUT
CN_PI485
CHANGEOVER_SW
RESET_SW
CN_Ther/Oper CN_MODE
CN_WIND
CN_INDOOR
DISPLAY_LED
TEMP_SW
SETTING_SW
CN_OUT
CN_PI485