Carrier FDT21 User manual

DUCTED TYPE SPLIT SYSTEMS
(3 Phase, Fixed Speed)
FDT21
FDT25
Read this operating & installation instruction carefully and keep it for future reference
Capacity Range : 21 to 25 Kw.
Available with Zone Remote Controller
OPERATION
&
INSTALLAT I O N
MANUAL
DUCTED TYPE SPLIT SYSTEM HEAT PUMP

2
CONTENTS
OPERATION INSTRUCTIONS
Preface................................................................................................................... 3
1. Part name and their function.................................................................................. 4
2. How to use the remote control............................................................................... 5-8
3. Maintenance........................................................................................................... 9-10
4. Operating Guide & Precautions..............................................................................11
INSTALLATION INSTRUCTIONS
5. Checking before contacting the service provider................................................... 12
6. Indoor Unit Installation........................................................................................... 13
7. Outdoor Unit Installation........................................................................................ 14-15
8. Pipe Preparation.................................................................................................... 16
9. Piping length and The Elevation............................................................................ 17
10. Piping Connection.................................................................................................. 18
11. Air Purging and Check for Pipe Leakage............................................................... 19
12.Wiring Diagram...................................................................................................... 20
13. Refrigerant Pipe and Drain Pipe............................................................................ 21
14. Test Running......................................................................................................... 22

3
Checking Product Received
Upon receiving your unit, please inspect for damage. Claims for damage should be reported
immediately to the transportation company. Check that the unit is correct against your order. In
the event an incorrect unit is delivered, it must be returned to the supplier and must NOT be installed.
The manufacturer assumes no responsibility for installation of incorrectly delivered units.
Before Installation
Read all instructions carefully prior to installation. Please ensure every step described in this manual is
understood and taken into account before starting installation.
Proper installation will help ensure trouble free operation. Improper installation may result in problems
such as noisy operation, compressor damage, improper operation or dangerous conditions that could
result in injury or property damage and this could also void the warranty.
Overcurrent Protection
Overcurrent protection which is less than the recommendation could result in unnecessary fuse failure
and chargeable service call. The manufacturer bears no responsibility for damage caused to the
equipment as a result of deviation from the recommended rating.
Refrigerant tubing
Keep refrigerant tubing clean and dry prior to and during installation to avoid equipment damage.
Homeowner
The user should retain this manual for future reference. To ensure the warranty is continued
and valid, the unit shall be required to be serviced as per section on “REGULAR/ PREVENTIVE
MAINTENANCE”. Attention should be given to the air inlet side of the outdoor coil to ensure that
leaves, grass and etc are not being drawn into the unit. Restriction to air flow across the coil will
reduce the system capacity or result in high operating pressures and excessive operating cost. There
must be air filters installed in the system at some point upstream to the indoor unit. Air filters should
be inspected at least once a month.
Your air conditioner is designed and built with reliable components to provide years of trouble free
dependable service. However, it will require regular maintenance either by yourself (end user)
or a licensed technician to keep your warranty on the unit valid.
Important
The Australian greenhouse office has issued various regulations on the use and disposal of refrigerants
in this unit. Failure to follow these regulations may harm the environment and could lead to the
imposition of substantial fines.
Only qualified and licensed technician should perform work on this unit, otherwise the warranty on the unit
will be void.

4
PART NAMES AND THEIR FUNCTIONS
Wired Remote
Control
OPERATION INSTRUCTIONS

5
WIRED REMOTE CONTROLLER
1). BASIC FUNCTION:
The following features can be operated by buttons on the Display unit.
Pressing button will turn the air conditioner on or off. When turned on, it will operate
according to the setting shown on the Display unit. The Zone Indicators
on the Display unit will show the zones being opened.
FAN
AUTO MODE :
When the fan speed is put in auto speed, the speed will be adjusted automatically according to
the difference between the room temperature and setting temperature.
If the difference is 3ºC or more, the speed is high.
If the difference is 2ºC, the speed is medium.
If the difference is 1ºC or less, the speed is low.
NOTE : The FAN button can not be used in DRY mode.
NOTE : 7 day program only for 4 Zone control.
AB C D
Press button to set fan speed low, medium, high or auto).
Auto Low Medium High
HOW TO USE THE REMOTE CONTROL OPERATION INSTRUCTIONS
5

6
The setting temperature can be set in the range of 18-30ºC by pressing TEMPor TEMP
button. The LCD on the Display unit will show the setting temperature.
TEMP
TEMP
MODE
OPERATING MODE
By pressing MODE button, the air conditioner can be put in one of the 5 operating modes
(fan, cool, dry, heat, auto).
1. Fan Mode: The system will operate as Fan only. The SLEEP, TEMP and TEMP buttons
are not used.
2. Cool Mode: The system will operate as the cooling unit. The room sensor for cool mode is located
at the return air near the indoor coil.
3. Dry Mode: The system will operate as the Dehumidifier. In dehumidifying, the temperature will be
reduced. An indoor unit will operate intermittently in the cool mode and an outdoor unit
4. Heat Mode: The system will operate as the heat pump by switching on the reversing valve relay.
The room sensor for heat mode is located at the display touch pad.
5. Auto Mode: The system will operate in either Cool mode or Heat mode automatically depending
upon the room temp and set temp. At this mode, sing “Cool” and “Heat” will appear
However, the compressor is subjected to 3-minute delay protection each time it stops.
will stop operating intermittently.
However, the compressor is subjected to 3-minute delay protection each time it stops.
simultaneously on the display screen.
HOW TO USE THE REMOTE CONTROL OPERATION INSTRUCTIONS

7
The enhanced features that the user has to go into menu window. Press MENU button to display the menu.
NOTE : To exit is to press
CLOCK SETTING
To set the clock is by
Move cursor to position and then press MENU button.
Pressor button for Hour setting.
Useor button to enter into Minute setting and then press or button for setting.
Use button to enter into Day setting and then press or button for setting.
Press MENU button to confirm.
Press button to exit.
NOTE :If Timer on/off is set, there will be no Clock display.
TIMER ON
Move cursor to ON position and then press MENU button.
Pressor button for Hour setting.
Useor button to enter into Minute setting and then press or button for setting.
Press MENU button to confirm.
Press MENU button to confirm.
Press button to exit.
button to exit.
NOTE : To cancel is by pressing POWER button while in this setting mode.
TIMER OFF
Move cursor to position and then press MENU button.
Pressor button for Hour setting.
Useor button to enter into Minute setting and then press or button for setting.
Press
NOTE : To cancel is by press POWER button while in this setting mode.
OFF
2). ENHANCED FEATURES :
ON OFF ZONE 7 DAY
ZONE CONTROL
To turn on/off the zone dampers is to
Move cursor to zone position and then press MENU button.
Press A or B button (in case of 2 zone control) or A or B or C or D button (in case of 4 zone control)
NOTE : By pressing & holding MENU button for 2 second the system will enter to ZONE mode immediately.
to turn on/off any particular zone(S),Display shows the active zone(S).
Press MENU button to confirm.
Press button to exit.
HOW TO USE THE REMOTE CONTROL OPERATION INSTRUCTIONS

8
The system can be programmed to turn on/off on 5 , 2 or 7 day basis.
Move cursor to 7 DAY position and then press MENU button.
Use or button to select 5, 2 or 7 day setting and then press MENU button.
5 day setting (Mon - Fri) 2 day setting (Sat - Sun)
7 day setting (Mon - Sun)
7 Day program (For 4 Zone Control Only)
Note : -If 7 Day program's Timer on/off is set, the LCD show "7 DAY".
-To override press button and hold for 5 seconds. The LCD shows "7 DAY" in blinking.
-To deactivate the override press button and hold for 5 seconds again.
(Timer on setting): Press or button for Hour setting. (Press button to skip Timer On Setting)
Use or button to enter into Minute setting and press or
button setting.
Press MENU button to confirm setting.
(Timer off setting): Repeat step the same as timer on setting.(Press button to skip Timer Off Setting)
Press button to exit 7 day program. The LCD "7 day" will show on display.
To cancel 7 Day program:
Press MENU button.
Move cursor to 7 day position and then press MENU button.
Press MENU button again to enter into "Timer On" setting.
Press button 2-3 times to exit 7 day mode. The LCD "7 day" will disappear.
HOW TO USE THE REMOTE CONTROL OPERATION INSTRUCTIONS

9
.
31
CLEANING THE INTERNAL AIR FILTERS
SUGGESTION :
AT THE START OF THE SEASON DURING THE OFF SEASON
Before inspection and maintenance of the unit, always set the main power switch to "OFF" to cut off power supply.
Remove the air filter; clean it with a vacuum cleaner or
if it is very dirty, wash it with soap water then wipe
off until it is completely dry before reinstallation.
*To remove the air filter, consult an installer.
If the air filter is dirty, it will cause the reduction
of airflow, The unit is overloaded and
consumes 6% more of electricity. So regular
cleaning is neccessary.
Check that nothing blocks the air inlet and outlet Cut off the power supply main switch.
of indoor and outdoor units. if not using for heating.
Running the unit without an air filter can cause
malfunctions due to dirt or dust. Always install
an air filter at all times.
Check that the drainage hose is not
obstructed or clogged.
3.2 3.3
Clean the air filter and other parts.
Leave the circulation fan running for 2-3 hours
to dry out the inside of the unit.
MAINTENANCE OPERATION INSTRUCTIONS

10
MAINTENANCE SCHEDULE
Your air conditioner is designed and built with reliable components to provide years of trouble free
dependable service. To preserve your investment for many years to come it is in your interest to
ensure the unit is properly maintained and regularly services as per the schedule stated below.
Weekly Monthly Yearly
By End User
Air filter cleaning X
Air filter inspection X
Remote (battery) – if any X
By Licensed Technician
Air filter inspection X
Indoor coil X
Outdoor coil X
Refrigerant charge X
Air Filter
It is important to check air filters as per the recommendation above and replace as necessary.
Dirty air filter will not allow the correct amount of air to pass through the cooling/ heating coil,
which effectively will reduce the rated capacities, affect the refrigerant superheating and the overall
operation of your air conditioner.
Indoor Coil
When the air filter is cleaned as per recommended, the indoor coil will require minimal cleaning. The
life span of the indoor coil will be pro-longed for effective heat transfer.
Outdoor Coil
The outdoor coil is required for effective heat transfer between the air conditioner and the external
environment, if the external environment air is dirty the frequency of cleaning should be increased
from the recommendation.
Refrigerant
The refrigerant is the “blood line” of the air conditioning system, the air conditioner will work
efficiently and effectively with the correct amount of refrigerant charge. Systems that run short on
refrigerant charge may eventually cause a compressor burn out.
MAINTENANCE OPERATION INSTRUCTIONS