LUKO FD-S Series User manual

LUKO’s FD-S & FD-X Series
DUCTED DEHUMIDIFIER
User’s Manual
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
Thank you for choosing our dehumidifier. This owner’s manual will provide you with
valuable information necessary for the proper care and maintenance of your new
dehumidifier. Please take a few moments to read the instructions thoroughly and
familiarize with all the operational aspects of this dehumidifier. This unit removes
excessive moisture from the air to create a more comfortable environment.

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Table of Contents
Foreword........................................................................................................................4
Purpose......................................................................................................................................................... 4
Content......................................................................................................................................................... 4
Rights Reserved.............................................................................................................................................4
1 SAFETY INTRODUCTION..............................................................................................5
1.1 Safety.......................................................................................................................................................5
1.2 Applications:........................................................................................................................................... 5
1.3 Manual Content...................................................................................................................................... 5
2 INTRODUCTIONS OF DEVICE...................................................................................... 6
2.1 Standards................................................................................................................................................ 6
2.2 Structure................................................................................................................................................. 6
2.2.1 Housing and body........................................................................................................................6
2.2.2 Inlet / Outlet Air Panel.................................................................................................................6
2.2.3 Refrigeration system....................................................................................................................6
2.2.4 Compressor..................................................................................................................................6
2.2.5 Throttling device system..............................................................................................................6
2.2.6 Protection devices....................................................................................................................... 7
2.2.7 Product Diagram..........................................................................................................................7
3 INSTALLATIONS............................................................................................................9
3.1 Brief introduction............................................................................................................................9
3.2 Delivery and storage.......................................................................................................................9
3.3 Inspection before installation.........................................................................................................9
3.4 Moving machine............................................................................................................................. 9
3.5 Installation Location....................................................................................................................... 9
3.6 Ground/Base.................................................................................................................................10
3.7 Ducting Connection...................................................................................................................... 10
3.8 Ducting Connection Diagram (example)...................................................................................... 11
3.9 Service Access Space Allocation................................................................................................... 11
3.10 Drain pipe connection................................................................................................................ 12
3.11 Electrical connection.................................................................................................................. 13
3.12 Sensitive elements connection...................................................................................................14
3.13 Electric Diagram..........................................................................................................................14
3.14 Machine Picture Diagram........................................................................................................... 15

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4 OPERATIONS............................................................................................................. 18
4.1 Controller Terminals:..................................................................................................................... 18
4.2 Controller Interface:...................................................................................................................... 19
4.3 Parameters Setting.........................................................................................................................19
4.4 Symbols Description:..................................................................................................................... 21
4.5 Mode / Function............................................................................................................................ 22
4.6 Parameters Code / Function..........................................................................................................24
4.7 Working Status Display.................................................................................................................. 25
4.8 Error Code......................................................................................................................................25
4.9 Error Code Address........................................................................................................................25
4.10 Safety Cautions.............................................................................................................................. 26
5 MAINTENANCES........................................................................................................27
5.1 Maintenance introduction....................................................................................................................27
5.2 Filter...................................................................................................................................................... 27
5.3 Fan Motor............................................................................................................................................. 27
5.4.1 Maintenance during start of usage season...............................................................................28
5.4.2 Maintenance during end of usage season................................................................................ 28
5.4.3 Maintenance of key components..............................................................................................28
5.4.4 Maintenance procedures.......................................................................................................... 28
5.5 Inspection and maintenance procedures.............................................................................................30
6. Troubleshooting.......................................................................................................32
7 APPENDIX..................................................................................................................35
7.1 Warranty Information...........................................................................................................................35

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Foreword
Purpose
This manual provides all the information about this precise dehumidifier, including the structure,
installation, principle, work process and the detailed operating instruction is provided.
Content
Dehumidifying control system, operating ways, maintain, and regular failure and failure elimination
Rights Reserved
We reserve the rights of updating/explaining all contents of manual involved.
Warning!
All electrical connections works must be done by local professionals, according to relevant
provisions to operate, or some loss of life, personal injury, property loss may be happened. Please
read through the manual before electrical works, avoiding any fault operation that causing loss of
life or property. Please contact the supplier or the manufacturer if there are any issues arises that
are not stated in this manual.

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1 SAFETY INTRODUCTION
1.1 Safety
This series of dehumidifier is in conformance with all provisions of European security requirements
and standards, the safety of worker and equipment are taken into care while in design and
manufacture process. In each section of the manual, there are safety information and explicitly
pointed out operation that may causes danger. And it is mark with "Danger" as a warning sign.
This manual provides information on the appropriate ways of operating the dehumidifier. It
shall serve as a guideline only and are not liable for any personal responsibility or meeting local
safety regulations. During the installation and operation of the equipment, everyone shall bear the
liability as listed below:
• To ensure the equipment in good condition according the description provided in this manual;
• Do care the safety of yourself and others;
• Dehumidifier should be operated and maintenance by related qualification professionals;
• Do not install dehumidifier around the explosive protection devices;
• Cut off the power before open any cover in the housing;
• When the operation ended, please allow the equipment to cool down at least 15 minutes
before begin the maintenance service;
• The machine panel should be closed at all time if maintenance work is not carried out;
• Dehumidifier is limited to atmospheric pressure condition to dehumidify;
• Filter device must be installed before using the dehumidifier;
• Removing or deleting the marks/declares/notes in the dehumidifier is prohibited;
• The manual should be kept well for using in the future;
• Original spare parts should be used for any replacement;
• The written permission from manufacture must be needed before repairing the dehumidifier;
1.2 Applications:
The dehumidifiers are widely used in hotels, office buildings, hospitals, commercial, research
institutions and other applicable places. Its working principle is to remove excess moisture by drying
the air under normal atmospheric pressure. Its working humidity range is from 40%-90% (the
humidity can be reduced to 40% at most), and working temp range is 5 °C to 35 °C. If the ambient
operating temperature is beyond this range, the dehumidify capacity will be affected, this issue
does not reflect on the quality of the equipment itself.
1.3 Manual Content
This manual content includes most info about installation, operation, maintenance, and failure
analysis and others.
Note: this manual is applicable to other precise dehumidifiers of the same range.

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2 INTRODUCTIONS OF DEVICE
2.1 Standards
The design meets IEC protection class IP 45 requirements.
2.2 Structure
2.2.1 Housing and body
Adopts steel frame structure, compact, strong, robust, and the defrosting technology effectively
preventing the "frozen" issue;
Easy to open / access panel for replacing filter
Water tray equipped ensures that all condensate water drain out, preventing water stagnation.
2.2.2 Inlet / Outlet Air Panel
Removable filter is equipped in each air inlet;
Centrifugal fan with steel volute and blades, high efficiency and low noise.
2.2.3 Refrigeration system
The design of the dehumidifier uses energy-saving heat exchanger. It can effectively regulate the
fluid flow volume, maximizing freezing capacity, and ensuring compressor operate well.
Meanwhile, dried filter was introduced in this system to prevents clogging/impurities in
expansion valve or capillary
Patented defrosting structure, it brings stable operation of refrigeration system
Hydrophilic membrane fin (heat exchanger), heat transfer efficiency increases by 20%. Good
insulation material also increases insulating effect by 15%
2.2.4 Compressor
Compressor is the core part of this dehumidifier. It directly affects dehumidifier performance. It
is the heart of this dehumidifier, provides powers for whole system. Our dehumidifier is built
with reliable and high efficiency compressors.
2.2.5 Throttling device system
Throttling device system is one of four vital items in the refrigeration systems. It will reduce the
liquid refrigerant (coming from condenser) high pressure, make the refrigerant absorb heat
under low pressure (low temp) while vaporization happen. It’s ensuring high pressure in
condenser and low pressure in evaporator. As a result, the loss of cooling capacity is reduced
thus ensuring higher efficiency. It also prevents over-heating on the compressor.

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2.2.6 Protection devices
Dehumidifier controller is specially designed according the operation of the dehumidifier
and it is designed to optimize its performance. Motor overload and short circuit protection is
included as well.
Start-up delay protection: If the dehumidifier is power off during operation, it will take 3
minutes to turn on again. This is a delay protection for protecting the compressor.
Shutdown delay protection: When the dehumidifier is power off, the fans will keep running
for 3 minutes, to cool down the dehumidifier thus reducing the internal heat of the
dehumidifier.
Fans operation mode: The fan will run and stop according to the RH setpoint.
High temperature protection: Prevent the compressor running continuously at high
temperatures;
Low pressure protection: Prevents the dehumidifier running without refrigerant to avoid
compressor from being overload.
2.2.7 Product Diagram
FD-S Series

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FD-X Series

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3 INSTALLATIONS
3.1 Brief introduction
Ceiling Mounted dehumidifier can be installed in many places, depending on the requirements of
owners. It can also integrate with current ventilation system via duct system. This chapter records
info about preparation work, and installation work and etc. Please serve it as a guide before
installation.
3.2 Delivery and storage
To ensure the quality and reliability of each dehumidifier, it has been thoroughly tested in factory.
If dehumidifier has to be stored for a while prior to installation, please take notes of the following:
①Keeping transport package in good condition;
②Avoiding physical damage;
③Dehumidifier should be stored indoor and covered properly to prevent dust, frost and rain
intrusion.
3.3 Inspection before installation
Unpack package and check machine: If any damage is found, please contact supplier /
manufacturer.
3.4 Moving machine
Please check the dehumidifier weight before any loading / unloading. The dehumidifier is equipped
with caster wheels, it can move on the ground. For moving the unit of a longer distance, it is advice
to use proper equipment (trolley or forklift) to move the goods. It should be take note that the
dehumidifier shall be lifted up properly and the lifting point should be away from the motor, control
system and exposed pipe to avoid any damages onto the equipment.
3.5 Installation Location
For best operation and maintenance service, it is advice to install the dehumidifier indoor / inside of
room with extra space for routine maintenance/checking in order to prevent condensation inside
the dehumidifier, the unit should not be exposed to environment where temperature is below the
process air’s dew point. Please place the device near to power source.
NOTE: Please provide enough space around the dehumidifier for troubleshooting and
maintenance service purpose.

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3.6 Ground/Base
Dehumidifier must be installed horizontally with well-balanced level. Please use horizontal ruler to
measure the level during installation.
3.7 Ducting Connection
The dimension of ducting for inlet and outlet air should be in line with ISO7807 recommended
values. Ducting should be connected with the connection part on flange, meanwhile, the screw bolt
is limited to within 20mm. While connecting the ducting, some notes as below:
In order to reduce loss of static pressure, do the best to shorten the length of the ducting;
To ensure performance of machine, all rigid (galvanized) ducting fittings are required to have
air-tightness;
The ducting should have a good capacity of thermal insulation, then the phenomenon of
moisture condensation inside pipe wall will be avoided, and the pipeline won't be corroded;
To reduce noise and vibration transmitted along the pipes, the good quality, soft and strong
airtight adapting pieces should be used in the joint parts;

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3.8 Ducting Connection Diagram (example)
3.9 Service Access Space Allocation
Please allocate the space require as per the table for access to service the unit.

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Model
Service Area
Void Area / No Blockage
A
B
E
D
FD-S28L / X28L
400mm
490mm
100mm
100mm
FD-S40L / X40L
500mm
600mm
100mm
100mm
FD-S60L / X60L
500mm
600mm
100mm
100mm
FD-S100L / X100L
600mm
650mm
100mm
100mm
FD-S140L / X140L
600mm
650mm
100mm
100mm
FD-S180L / X180L
500mm
500mm
270mm
100mm
FD-S250L / X250L
500mm
500mm
270mm
100mm
FD-S380L / X380L
500mm
600mm
370mm
100mm
FD-S500L / X500L
500mm
600mm
370mm
100mm
3.10 Drainpipe connection
Drainpipe is a transparent hose, please connect it as per the drawing as below:

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It is strongly advised to install a U-Trap with PVC pipe or any other pipe that are suitable. This would
help to allow the condensate water flow out smoothly.
3.11 Electrical connection
Be careful! All electrical connection works must meet local electrical equipment installation
standards, done by qualified professionals.

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It is forbidden to connect the power supply beyond the specified voltage and frequency;
Before the connecting the power supply, the electrical point should be checked to ensure that
its voltage and frequency fluctuation does not go beyond ±10%;
Unit must be grounded and turn off power during checking work.
3.12 Sensitive elements connection
The installation of temperature and humidity detection devices should follow the requirements as
below：
Temperature and humidity detection devices should be installed above ground 1m - 1.5m, to
ensure the device can detect the humidity of the dehumidifying area;
Detection device should be installed away from dry air or wet air or airflow from outside;
Temperature and humidity detectors should stay away from cooling equipment,
do not directly exposed to sunshine place, as the change of the temperature will affect the
actual assessment;
External control system must be compatible with the low voltage control circuit of
dehumidification equipment.
3.13 Electric Diagram

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3.14 Machine Picture Diagram

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EC Fan
Compressor
Heat
Exchanger
Filters
Wiring
Terminal
3 Phase
Protector
&
Contactor

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Fresh Air Damper and
Return Air Inlet -
For FD-X Series
Return Air Inlet -
FD-S Series
Supply Air Outlet
FD-S Series
FD-X Series

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4 OPERATIONS
4.1 Controller Terminals:
Terminal
Description
Load
L, N
230VAC
Power supply
Relay 1 - H
230VAC output, Max.1A
High fan speed
Relay 2 -
M
230VAC output, Max.1A
Medium fan speed; Fan
coil valve
Relay 3 -
Lo
230VAC output, Max.1A
Low fan speed; Humidifier
Relay 4 - C
230VAC output, Max.1A
Compressor
Relay 5 -
NO
230VAC output, Max.1A, SPDT(single-pole
double-throw)
Air damper open
Relay 5 -
NC
230VAC output, Max.1A, SPDT(single-pole
double-throw)
Air damper close
EC FAN1
0~10V
DC motor supply fan
EC FAN2
0~10V
DC motor exhaust fan
GND
Low current common terminal
RS485 - A1
Communicate with external temp.& humidity sensor
RS485 - B1
Communicate with external temp.& humidity sensor
RS485 - A2
Communicate with third-party
RS485 - B2
Communicate with third-party
12VDC
Power the external temp.& humidity sensor

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4.2 Controller Interface:
4.3 Parameters Setting
A. General parameters
ON/OFF:
*Short press to turn on/off the controller: the small OFF appear in the top when the unit is
powered off and disappear after 3 minutes.
*Short press to exit during parameters setting.
Fan Speed:
Press to adjust the fan speed.
Air Damper:
Press to open or close the air damper.
Mode Change:
Short press & to change the available system working mode.

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Humidity Set:
Press to reduce humidity, press to raise humidity (1% change on each press).
Temperature Set:
Only for the available system working mode.
Filter:
Long press & for 5 seconds to display the run time, wait for 5 seconds to exit.
Long press for 10 seconds to clear the alarm and reset the time.
B. Factory Parameters
Factory parameters setting:
Long press for 5 seconds to enter the factory parameters setting mode: the parameters code R, P,
O, H, C, A, D, F will appear;
Press or to select the parameters code R, P, O, H, C, A, D, F;
Short press to set the code;
Press or to adjust the code value;
Short press to save the code value;
Short press to exit without saving during the code value setting or return to the previous page;
Long press & & for 3 seconds to reboot the controller’s settings;
10 seconds without any changes in setting, the value will not be saved and exit to the home screen.