Gree CE53-24/F(C) User manual

Owner's Manual
Commercial Air Conditioners
Model:
CE53-24/F(C)
Thank you for choosing Air Conditioners, please read this owner’s manual carefully before operation and
retain it for future reference.If you have lost the Owner’s Manual, please contact the local agent or visit
www.gree.com or send email to [email protected]om.cn or electronic version.
GREE reserves the right to interpret this manual which will be subject to any change due to product
improvement without further notice.
GREE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual.
Multi-VRF Centralized
Controller

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.
All photos in this manual is only for reference, please refer to the actual product for
the final effect.

Contents
1 INSTALLATION....................................................................... 1
1.1 Installation Requirements...........................................................2
1.2 Wiring Instructions .....................................................................3
1.3 Wiring Instructions .....................................................................6
1.4 Removal Procedure ...................................................................8
2 DISPLAY AND WORKING INSTRUCTIONS .......................... 8
2.1 Main Page Display and Buttons.................................................9
2.2 General Buttons.........................................................................9
2.3 Buttons Working Instructions....................................................10
3 FUNCTIONS DESCRIPTION ................................................ 11
3.1 All ON/OFF .............................................................................. 11
3.2 Single Unit Control................................................................... 11
3.3 Water /Floor control..................................................................13
3.4 e-Control Function ...................................................................18
3.5 Group Control ..........................................................................19
3.6 Schedule Management............................................................20
3.7 Local Setting............................................................................22
3.8 Engineering Setting..................................................................24
3.9 Operation Notice......................................................................25

Multi-VRF Centralized Controller
1
1 INSTALLATION
Fig.1.1 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
resistance
QTY
1
4
1
1
Unit: mm
Fig.1.2 Dimension of Centralized Controller

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Fig.1.3 Dimension of Electric Box Cover
1.1 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)
Total length
L(m)
Remark
Indoor
network
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
IEC 60227-
5:2007
≥2×0.75
L≤1000
If cord size is 2×1 mm2,
communication cord can be
stretched longer. But the
total length can’t exceed
1500m.
Outdoor
network
L≤250
Total length of
communication cord can’t
exceed 250m.
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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1.2 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: 110～240 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.1.4 Centralized Controller Connected with Indoor Network

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Method 2: Connect with outdoor network
Fig.1.5 Centralized Controller Connected with Outdoor Network
Method 3: Connect with heat recollection mode converter Network
Fig. 1.6 Centralized Controller Connected with Heat Recollection Mode Converter
Network

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Wiring Instructions:
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.1.4. 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.1.5. 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. 1.6. 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 “00000”, 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:

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SA2
Address
NO.
DIP1
DIP2
DIP3
DIP4
DIP5
1
0
0
0
0
2
0
1
0
0
0
3
0
0
1
0
0
4
0
0
0
1
0
5
0
0
0
0
1
6
1
0
0
0
1
7
0
1
0
0
1
8
0
0
1
0
1
9
0
0
0
1
1
10
1
0
0
1
1
11
0
1
0
1
1
12
0
0
1
1
1
13
1
0
1
1
1
14
0
1
1
1
1
15
1
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.
1.3 Wiring Instructions
Fig.1.7 Installation Diagram

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Fig.1.8 Diagram of Wooden or Plastic Plug
Fig. 1.9 Installation Holes of the Electric Box Rear Cover
Fig.1.7 is a simple installation procedure of centralized controller. Please pay
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.1.8.
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.1.9.
(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

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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.
1.4 Removal Procedure
Fig.1.10 Diagram of Removal
2 DISPLAY AND WORKING INSTRUCTIONS
Fig.2.1 Main Page

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2.1 Main Page Display and Buttons
No.
Name
Instructions
①
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
②
Current page
The total pages of the controlled indoor unit and the current page.
③
Error status
Error icon will be displayed if indoor unit is malfunctioning.
④
Time zone
The present date, week and time
⑤
Menu
There are 4 buttons: e-Control, Group, Schedule and Setting.
Press the button to enter the corresponding page:
⑥
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.
⑦
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.
⑧
All on/off button
Press this button to turn on or off all air conditioning equipment.
⑨
IDU icon
Press the button to enter the page of indoor unit control.
Orange icon indicates that IDU is on while the grey icon
indicated that IDU is off.
⑩
Shield status
This icon will be displayed when indoor unit is in shield status.
Set temperature
When indoor unit is on, set temperature will be displayed here.
2.2 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

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2.3 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 2.2 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):
Light grey indicates invalid/not selectable. Sleep function is invalid and can’t be
selected. Different cases for models.
Grey indicates off/not selected. Sleep function is off. Pressing the grey sleep
button can turn on the sleep function.
Orange 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, group control and schedule, as
indicated in fig.2.2 (the home page of group control), 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.

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Fig.2.2 Zone Buttons on the Group Control Page
3 FUNCTIONS DESCRIPTION
3.1 All ON/OFF
On the home page, press the “All OFF” button to turn off all indoor units.
Press the “All ON” button to turn on all indoor units. Then indoor units will work
according to memory.
3.2 Single Unit Control
On the home page, press the icon of indoor unit to enter the single unit control.
Parameters of single unit control include parameters of general control and
advanced control.
Fig.3.1 Page of Single IDU Control

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(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:
①Auto mode can only be set in the master indoor unit.
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.
Pressing the button “Setting Temp” can switch to “indoor temp” or “outdoor temp”.
The corresponding temperature value will be displayed.
4) 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.
5) 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.
6) Malfunction View
When indoor unit fails to function well, press to view the information of

Multi-VRF Centralized Controller
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malfunctions.
(2) Advanced Control Parameters
Press Advance Button to enter the advance page.
Press icon buttons to turn on or off the corresponding function.
Fig.3.2 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.
3.3 Water /Floor control
On the home page, press the icon of water/floor unit to enter the water/floor control
interface.
Water/Floor control parameters include water heating control parameter and floor
heating control parameter. It can be switched via button.

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Notes:
（1）When 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;
（2）Only when it is connected to hot water generator, water heating and floor
heating functions are applicable, the interface can be switched and displaced
according to the above instructions;
3.3.1 Water Control Parameter
Fig. 3.3 Page of Water heating Control
（1）On/Off
Press the on/off button to trun unit on or off.
When the unit is off, it cannot set the mode, temperature and preset function, while
it can set the sterilization function.
（2）Mode Setting
Press the Mode buttons to set unit’s operation mode.
There are three modes: HotWater, Booking, Night. These three modes can not be
simultaneously conducted, it can only choose one of the modes.
HotWater mode: the water tank or hot water generator will start up or stop heating
water according to the current set water temperature.
Booking mode: book the water heating time, the water tank or hot water generator

Multi-VRF Centralized Controller
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will start up the unit in advance according to the actual water temperature, and will
decide the on and off of water tank or hot water generator according to the temperature
difference between actual water temperature and the setting water temperature. The
water tank or hot water generator will close down the unit 1~4 hours later after the
preset time. Once this mode is set, it will circularly operate every day.
Night mode: the fixed period for providing hot water is from 00:00 to 06:00, the
water tank or hot water generator will start up in this period, and will decide the on and
off of water tank or hot water generator according to the temperature difference
between actual water temperature and the setting water temperature. If it is not within
this period, the water tank or hot water generator will close down the unit. Once this
mode is set, it will circularly operate every day.
（3）Temperature Setting
Press the button of “Current Temp” can view the current temperature of hot water.
After pressing “Setting Temp”, the temperature value can be adjusted by pressing up
and down buttons; the temperature value will increase or decrease by every pressing
the button for once. The temperature value will be continuously increased or decreased
by long pressing the button.
Under the standard HotWater, Booking and Night modes, the temperature setting
range is: 35℃～the maximal adjustable temperature 55℃, the acquiescence maximal
temperature is 50℃.
（4）Available Hot Water Volume
The water volume can be display in real time, there are five sections of water
volume: 100%, 80%, 60%, 40%, 20%, when the water volume is less than 20%, it will
flicker.
（5）Function Setting of Water Heating
Under on /off status of water heating, the following functions can be set:
Water On/Off
Functions
Start-up Water mode
Sunflower, Auto, Sterilization, Fast, Shield
Start-up Booking mode
Auto, Sterilization, Fast, Shield
Start-up Night mode
Auto,Sterilization, Fast, Shield
Water heating off
Sterilization
Sunflower function: find the highest outdoor temperature by recording the history
data of outdoor temperature to define the time to heat the water, so as to achieve
energy saving.

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Auto function: the setting temperature of water heating will be automatically
provided by water heater according to the outdoor ambient temperature, there is no
need to set by the user, and the water temperature cannot be adjusted via or
buttons.
Sterilization function: it will conduct high temperature sterilization when the water
temperature in the water tank is heated to 65~70℃(adjustable) within the required set
time. When the high temperature sterilization is set to be “once”, then the sterilization
will be valid for once; when the high temperature sterilization is set to be “circular”, the
sterilization will be circularly valid, then it can set the circulated days and presetting
sterilization time. When the sterilization function is activated, it will display .
Fast function: start up the compressor and electric heating water under the
allowable conditions of outdoor unit, the fast water heating function can be set to be
valid for once, when the water tank/hot water generator has reached to heat
preservation status, the fast water heating function will be cancelled for energy saving.
After the water heating is closed down, the fast water heating function is cancelled.
Shield function: it can conduct shield function by pressing related functional
buttons of wired controller to nullify such operation.
（6）Malfunction View
When the water heater fails to function well, press to view the information of
malfunctions.
3.3.2 Floor control parameter
Fig. 3.4 Page of Floor Heating Control

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（1）On/off
Press the on/off button to trun unit on or off.
When the unit is off, the mode and temperature cannot be set.
（2）Temperature Setting
Press the button of “Current Temp” to view the current water yielding temperature.
After pressing “Setting Temp”, the temperature value can be adjusted by pressing up
and down buttons, the temperature value will increase or decrease by every pressing
the button for once. The temperature value will be continuously increased or decreased
by long pressing the button. Floor heating water yielding temperature range: 25℃~the
highest water yielding temperature of floor heating 45℃.
（3）Function Setting of Floor Heating
Under the on/off status of floor heating, the functions can be set as below:
Floor on/off
Function
Remarks
Floor on
Auto, Fast, Absence, Shield
Floor off
Absence
It will be valid only when the
indoor unit is set together with
shunt valve
Auto function：the floor heating water yielding temperature will be automatically
provided by hot water generator according to the outdoor ambient temperature, there is
no need to set by the user, and the water temperature cannot be adjusted via or
buttons.
Fast function: start up the compressor and electric heating under the allowable
conditions of outdoor unit.
Absence function: when the user is absence, it will maintain certain degree of
water temperature to prevent the pipelines from being frozen up and prevent the indoor
equipment from being destroyed.
Shield function: it can conduct shield function by pressing related functional
buttons of wired controller to nullify such operation.
（4）Malfunction View
When the floor heating fails to function well, press to view the information of
malfunctions.