Gree CE53-24/F(C) User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi-VRF Centralized Controller
Model:
CE53-24/F(C)

To Users
Thank you for selecting Gree’s product. Please read this instruction manual
carefully before installing and using the product, so as to master and correctly use
the product. In order to guide you to correctly install and use our product and
achieve expected operating effect, we hereby instruct as below:
(1) This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsibility for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
(2) This instruction manual is a universal manual, some functions are only
applicable to particular product. All the illustrations and information in the
instruction manual are only for reference, and control interface should be
subject to actual operation.
(3) In order to make the product better, we will continuously conduct
improvement and innovation. We have the right to make necessary
revision to the product from time to time due to the reason of sales or
production, and reserve the right to revise the contents without further
notice.
(4) For personal injury or property loss and damage caused by improper
operation such as improper installation and debugging, unnecessary
maintenance, violation of related national laws and rules and industrial
standard, and violation of this instruction manual, etc., we will bear no
liability.
(5) The final right to interpret for this instruction manual belongs to Gree
Electric Appliances Inc. of Zhuhai.

Contents
1 SAFETY NOTICES (PLEASE BE SURE TO ABIDE)...............................1
2 USER NOTICE .........................................................................................1
3 INSTALLATION.........................................................................................2
3.1 INSTALLATION REQUIREMENTS ..............................................................3
3.2WIRING INSTRUCTIONS .........................................................................4
3.3WIRING INSTRUCTIONS .........................................................................8
3.4 REMOVAL PROCEDURE .........................................................................9
4 DISPLAYAND WORKING INSTRUCTIONS..........................................10
4.1 MAIN PAGE DISPLAY AND BUTTONS .....................................................10
4.2 GENERAL BUTTONS............................................................................11
4.3 BUTTONS WORKING INSTRUCTIONS.....................................................11
5 FUNCTIONS DESCRIPTION.................................................................13
5.1ALL ON/OFF......................................................................................13
5.2 SINGLE UNIT CONTROL.......................................................................13
5.3WATER/FLOOR CONTROL ....................................................................17
5.4 FRESH AIR CONTROL..........................................................................21
5.5 E-CONTROL FUNCTION........................................................................23
5.6 GROUP CONTROL...............................................................................24
5.7 SCHEDULE MANAGEMENT...................................................................26
5.8 LOCAL SETTING..................................................................................28
5.9 ENGINEERING SETTING.......................................................................30
5.10 OPERATION NOTICE..........................................................................31
6 ROOM VIEW...........................................................................................31
6.1ALL ON/OFF......................................................................................32
6.2 ROOM CONTROL ................................................................................32

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1 Safety Notices (Please be sure to abide)
Warning: If not abide strictly, it may cause severe damage to the unit or
the people.
Note: If not abide strictly, it may cause slight or medium damage to the unit
or the people.
This sign indicates that the operation must be prohibited. Improper
operation may cause severe damage or death to people.
This sign indicates that the items must be observed. Improper operation
may cause damage to people or property.
WARNING!
This product can’t be installed at corrosive, inflammable or explosive
environment or the place with special requirements, such as kitchen.
Otherwise, it will affect the normal operation or shorten the service life of the
unit, or even cause fire hazard or serious injury. As for above special places,
please adopt special air conditioner with anti-corrosive or anti-explosion
function .
2 User Notice
All indoor units must be supplied with unified power.
Make sure communication cord is connected with the proper port, otherwise
there may occur communication malfunction.
Never knock on, throw or frequently detach the centralized controller.
Never operate the centralized controller with wet hands.
Never scratch the screen of centralized controller by hard or sharp objects.
If the centralized controller is connected with the outdoor network or the last
indoor unit of the indoor network, then a matching resistance must be
connected between G1 and G2 ports.

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3 INSTALLATION
Fig.3.1 Parts of Centralized Controller
No.
①
②
③
④
Name
Touch screen
Self-tapping screw ST4.2×
9.5 MC (used to secure the
rear cover of controller)
Rear cover
of controller
Rubber
band
QTY
1
4
1
6
No.
⑤
⑥
⑦
⑧
Name
Screw M4×12 (used
to secure ground
wire)
Screw ST4.2×16 FA (used
to secure electric box
cover)
Electric box
cover
Matching
resistanc
e
QTY
1
4
1
1
Unit: mm
Fig.3.2 Dimension of Centralized Controller

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Fig.3.3 Dimension of Electric Box Cover
3.1 Installation Requirements
(1) Communication cord of the centralized controller must be selected
according to the table below. Never use the cable that is not in compliance
with instructions of this manual.
Network
Cord type
Cord
standard
Cord size
(mm2/AWG)
Total length
L(m/feet)
Remark
Indoor
network
Light/Ordin
ary
polyvinyl
chloride
sheathed
cord.
(60227
IEC 52
/60227 IEC
53)
IEC
60227-
5:2007
2×0.75~
2×1.25
(2×AWG18~
2×AWG16)
L≤1000m
(L≤3280-5/6feet)
If cord size is 2×1mm2
(2×AWG16),communica
tion cord can be
stretched longer. But
the total length can’t
exceed
1500m(4921-1/4feet).
Outdoor
network
L≤500
(L≤820-1/5feet)
Total length of
communication cord
can’t exceed
500m(820-1/5feet).
Notice:
①The cord shall be Circular cord (the cores shall be twisted together).
②If unit is installed in places with intense magnetic field or strong
interference, it is necessary to use shielded wire.
(2) Never install the centralized controller in the following places:
1) Places with corrosive gas or serious dust, salt mist or oil smoke.
2) Wet and damp places, with direct sunlight.
3) Places near high temperature objects or places where units might be
splashed by water.

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3.2 Wiring Instructions
(1) Wiring Ports
Port
print
G1, G2
F1, F2
A2, B2
A3, B3
L, N
Meaning
CAN
comm. port
【reserved
port】
【reserved port】
【reserved port】
Power
port
(2) Power Supply
The smart centralized controller shall use independent power supply.
The range of input voltage: 100～240 VAC; Frequency range: 50/60Hz
Select power cord according to the following table. Never use the power cord
that is not in compliance with instructions of this manual.
Cord type
Cord standard
Cord size (mm2)
Single-cord soft conductiveunsheathed cord
(60227 IEC 08)
IEC 60227-3:2007
1.5
(3) Connection Method
There are three methods to connect centralized controller with the air
conditioning system.
Method 1: Connect with indoor network
Fig.3.4 Centralized Controller Connected with Indoor Network
Method 2: Connect with outdoor network

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Fig.3.5 Centralized Controller Connected with Outdoor Network
Method 3: Connect with heat recollection mode converter Network
Fig. 3.6 Centralized Controller Connected with Heat Recollection Mode Converter
Network
Wiring Instructions:

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①The smart centralized controller is applicable to multi VRF units,
connectable with network of indoor units or the network of outdoor units or
mode converter network. One centralized controller can control up to 16
sets of outdoor system and up to 32 sets of indoor unit.
②If the centralized controller is to be connected with the network of indoor
units, connect according to fig.3.4. The controller can connect with any
one indoor unit in series, that is, connect the controller’s G1 and G2 ports
with the D1 and D2 ports correspondingly with communication cords.
When the controller is connected with the terminal unit of indoor network, a
matching resistance needs to be added with the communication cords at
the G1 and G2 ports.
③If the centralized controller is to be connected with the network of outdoor
units, connect according to fig.3.5. The centralized controller can only be
connected with the terminal system of the outdoor network. A matching
resistance needs to be added with the communication cords at the G1 and
G2 ports.
④The centralized control address DIP switch (SA2_Addr-CC) indicates the
centralized control address required when different refrigerating systems
are controlled in a centralized manner. The default factory setting is
"00000".
⑤If the centralized controller is to be connected with the network of heat
recollection, connect according to Fig. 3.6. The method 2 is also
applicable to centralized controller switching in heat recollection network.
If the centralized controller is to be connected with the network of outdoor units,
set the DIP switch according to the following methods:
1) The DIP switch must be set on the master unit and set the Master Unit
Setting DIP Switch(SA8) to "00".Otherwise, the setting is invalid.
2) On the same refrigerating system, the centralized control address DIP
switch (SA2_Addr-CC) on a non-master unit is invalid, and it is
unnecessary to change the settings.
3) The centralized control address DIP switch (SA2_Addr- CC) on the master
unit of a refrigerating system must be set to “0000/”, and this system is the
master system.
4) The centralized control address DIP switch (SA2_Addr- CC) on the master
unit of other refrigerating systems must be set as follows:
Note: The centralized control address switch of DIP5 invalidation

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SA2
Address
NO.
DIP1
DIP2
DIP3
DIP4
DIP5
1
0
0
0
/
2
0
1
0
0
/
3
1
1
0
0
/
4
0
0
1
0
/
5
1
0
1
0
/
6
0
1
1
0
/
7
1
1
1
0
/
8
0
0
0
1
/
9
1
0
0
1
/
10
0
1
0
1
/
11
1
1
0
1
/
12
0
0
1
1
/
13
1
0
1
1
/
14
0
1
1
1
/
15
1
1
1
1
/
16
5) The centralized control address DIP switch (SA2_Addr- CC) cannot be the
same between different refrigerating systems. Otherwise, address
conflicts may occur and the unit cannot run properly.
6) If the address conflict occurs, it will popup the address conflict page.
Note:There are three ways to solve address conflict.
1: Enter into an unoccupied address by manually for the conflict address,
the address conflict can be solved after it set up success.
2: Press and hold the “Save”button for 5 seconds on the address conflict
page, select reset all the IDU’s address in the system, after entering the
engineering password, system will reassign all the address.
3: On the master unit of master system, press “SW3”to enter the
to-be-selected status of function settings, press “SW1 (UP)”or “SW2
(DOWN)”to select the function of “n5 ”, press “SW7”to enter “n5 ”function
settings, press “SW7”again to send the project number offset command.

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3.3 Wiring Instructions
Fig.3.7 Installation Diagram
Fig.3.8 Diagram of Wooden or Plastic Plug
Fig. 3.9 Installation Holes of the Electric Box Rear Cover
Fig.3.7 is a simple installation procedure of centralized controller. Please pay

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attention to the following matters:
(1) Before installation, first cut off the power supply of indoor unit. The power
must be cut off during the whole installation process.
(2) During the installation, be careful not to damage to touch screen.
(3) Before installation, please make the following preparations:
1) In case that the centralized controller is installed on wall, dig a hole that is
the size of 180mm×107mm×62mm and peg 4 wooden or plastic plugs
on the wall according to fig.3.8.
2) In case that the centralized controller is installed inside the control cabinet,
dig 4 installation holes on the surface of the control cabinet according to
fig.3.9.
(4) In step (1), pull out the power core and communication cord, and then lead
them separately from the wire orifice of the electric box rear cover. Never
lead the cords through a same orifice.
(5) In step (2), locate the electric box rear cover to the installation holes of the
wall with screw ST4.2×16 FA.
(6) In step (6), pull out the wire connecting the touch screen and controller’s
rear cover. Put the touch screen on a safe place.
(7) In step (7), connect the communication cords to G1, G2 terminals, and
connect the neutral wire and live wire to the N, L terminal; connect the
ground wire to position on the electric box rear cover. Secure it with
screw M4×12.
(8) In step (8), locate the controller’s rear cover onto the electric box rear
cover with screw ST4.2×9.5 TC.
(9) In step (9), connect the wire between touch screen and controller’s rear
cover.
3.4 Removal Procedure
Fig.3.10 Diagram of Removal

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4 DISPLAY AND WORKING INSTRUCTIONS
Fig.4.1 Main Page
4.1 Main Page Display and Buttons
No.
Name
Instructions
1
Time zone
The present date, week and time
2
e-Control button
Press this button to enter e-Control page
3
Setting button
Press this button to enter setting page
4
Unit button
Press this button to enter IDU page or Water/Floor page
5
Touch button
Press the Touch Button to turn on/off the screen of
centralized controller.
Press and hold the Touch Button for 5sec to restart to
centralized controller.

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4.2 General Buttons
Display
Name
Meaning
Display
Name
Meaning
Return
Press this button to return to
the previous page
Cancel
Press this button to cancel the
current setting and return to the
previous page
Save
Press this button to save the
current setting and return to
the previous page
Add
Press this button to add group
or schedule
Edit
Press this button to edit the
e-Control,group or schedule
Delete
Press this button to delete
group or schedule
Up
Press this button to increase
value or select the previous
option
Down
Press this button to decrease
value or select the next option
Group
Control
Press this button to enter
Group control page
IDU
Sort
Press this button to enter IDU
sort page
Add
IDU
Press this button to enter Add
IDU page
Info
Press this button to enter Info
page
4.3 Buttons Working Instructions
The centralized controller uses a capacitive touch screen so that user can
operate the units by just touching the screen.
Buttons on the screen are presented in the following ways:
(1) Icon
Icon button can be operated directly. See section 4.2 for more details.
(2) Icon + Text
According to the meaning of Text, turn on or off or select a certain function, or
enter a certain page. This type of button has 2 or 3 kinds of status based on the
specific function.
Meaning of status (take Sleep Button as an example):
Thin light indicates invalid/not selectable. Sleep function is invalid and
can’t be selected. Different cases for models.
Light indicates off/not selected. Sleep function is off. Pressing the grey
sleep button can turn on the sleep function.

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Dark indicates on/selected. Sleep function is on. Pressing the orange
sleep button can turn off the sleep function.
(3) Sliding
Sliding left/right or up/down can turn over the page. For example the home
page list of indoor units, schedule, etc.
(4) Sliding bar
Press and hold the sliding bar to drag up/down or left/right and to adjust the
value. For example the fan speed setting, backlight setting, etc.
(5) Zone button
On the management pages of e-Control functions and schedule, as indicated in
fig.4.2 (the home page of schedule), each rectangle frame constitutes a zone
button.
Press the zone button, then the turning on/off of corresponding function or the
corresponding page will pop in.
Fig.4.2 Zone Buttons on the Group Control Page

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5 FUNCTIONS DESCRIPTION
5.1 All ON/OFF
On the home page, press the “Indoor Unit“button to enter IDU home page,
swith to “ALL IDU”option, press the “GroupOFF” button to turn off all indoor units.
Also press the “GroupON” button to turn on all indoor units. Then indoor units
will work according to memory.
5.2 Single Unit Control
On the IDU home page, press the icon of indoor unit to enter the single unit
control.
Press the icon of indoor unit for 5 seconds to pop up the name set of the
selected indoor unit.
Parameters of single unit control include parameters of general control and
advanced control.
Fig.5.1 Page of IDU home page

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No.
Name
Instructions
1
IDU display
Display in separate page the list of indoor units that are
controlled by the centralized controller. Sliding left or right can
turn over the page.
2
IDU icon
Press the button to enter the page of indoor unit control.
Light icon indicates that IDU is on while the dark icon indicated
that IDU is off.
3
Master IDU
This icon will be displayed when indoor unit is the master indoor
unit of the system.
4
Set temperature
When indoor unit is on, set temperature will be displayed here.
5
Error status
Error icon will be displayed if indoor unit is malfunctioning.
6
Operation mode
When indoor unit is on, the current operation mode will be
displayed:
Auto Cooling Dry Fan
Heating Floor heating Space heating 3D
heating Refreshing Absence Auto
dry Dry Cloth
7
Group on button
Press this button to turn on all air conditioning equipment of the
group.
8
Shield status
This icon will be displayed when indoor unit is in shield status.
9
Current page
The total pages of the controlled indoor unit and the current
page.
10
Group off button
Press this button to turn off all air conditioning equipment of the
group.
11
IDU icon
Display the icon of the indoor unit.
12
IDU name
Display the name of the indoor unit.

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Fig.5.2 Page of Single IDU Control
(1) General Control Parameters
1) On/off
Press the on/off button to turn unit on or off.
When unit is turned off, mode, temperature,fan speed and swing can’t be set.
2) Mode setting
Press the Mode buttons to set unit’s operation mode.
Modes for indoor units of different series are not all the same.
If a certain mode is not available in the indoor unit, the icon of the
corresponding mode cannot be selected.
Note:
①Only master indoor unit can set auto mode; absence mode can be set only
when one indoor unit is turned on and this indoor unit shall be the bedroom
indoor unit with three refrigerant pipes.
②Heat recollection system have no master indoor unit. When the indoor unit
of the same branch is connected into one indoor unit, the auto mode can
be set; when the quantity of indoor unit in the same branch is more than
one set, the auto mode cannot be set; other modes can be freely switched.
3) Temperature setting
Press the up or down buttons to adjust temperature. Each time pressing the
button will increase/decrease the temperature by 1. Holding down the button can
increase/decrease temperature continuously.

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Pressing the button can display the “indoor temp” and “outdoor temp”.
Note:For Bedroom IDU, Press the up or down buttons to adjust temperature.
Each time pressing the button will increase/decrease the temperature by 0.5.
4) Humidity setting
Press temperature and humidity switching button to switch to the humidity
setting interface. Press the up or down button to adjust humidity. Each time
pressing the button will increase/decrease the humidity by 5%. Holding down the
button can increase/decrease humidity continuously within the range from 45% to
65%.
Note: Humidity Setting function is particular for Bedroom air condition. other air
condition without Humidity Setting function.
5) Fan speed setting
Press or drag the fan speed bar to set unit’s fan speed.
Note: Unit defaults to low fan speed in dry mode. Fan speed cannot be set in
drying or floor heating mode.
Auto fan speed is defaulted in absence mode and fan speed cannot be set; low
fan speed is defaulted in auto dry mode and cannot be set; high fan speed is
defaulted in clothes drying mode and cannot be set.
6) Swing setting
Pressing the button “Up-Down Swing” or “Left-Right Swing” can turn on or off
the swing function.
Note: Swing types for indoor units of different series are not all the same.
7) Malfunction View
When indoor unit fails to function well, press the button to view the
information of malfunctions.
(2) Advanced Control Parameters
Press Advance Button to enter the advance page.
Press icon buttons to turn on or off the corresponding function.

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Fig.5.3 Advance Page
1) Functions of Sleep, Quiet, E-Heater, Absence and Rapid can only be
effective when unit is turned on.
2) When sleep function is on, quiet function will be turned on subsequently.
Sleep function will not be effective under auto, fan or floor heating mode.
3) Absence function can only be turned on in heating mode. When absence
function is on, set temperature is 8℃.
4) Rapid cool function can only be effective in cool mode. Likewise, rapid
heat function can only be effective in heat mode.
5) When shield all function is on, other shield buttons will be invalid.
6) When Shield Temp function is on, Sleep function is off.
5.3 Water/Floor control
On the water/floor home page, press the icon of water/floor unit to enter the
water/floor control interface.Press the icon of water/floor unit for 5 seconds to pop
up the name set of the selected indoor unit.
Water/Floor control parameters include water heating control parameter and
floor heating control parameter. It can be switched via button.
Notes:
①When there is only one function can be selected (water or floor), it can only
display the water heating or floor heating function interface, and cannot be
switched to another interface;
②Only when it is connected to hot water generator, water heating and floor
heating functions are applicable, the interface can be switched and