Gree CE55-24/F User manual

Owner's Manual
Original Instructions
Multi-VRF Centralized Controller
Model:
CE55-24/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 them) ............... 1
2 User Notice......................................................................... 1
3 Installation.......................................................................... 2
3.1 Installation Requirements.......................................................4
3.2 Wiring Instructions .................................................................5
3.3 Installation Procedure ............................................................9
3.4 Removal Procedure .............................................................11
4 Display and Working Instructions.................................. 11
4.1 Main Page Display and Buttons ...........................................12
4.2 General Buttons ...................................................................12
4.3 Buttons Working Instructions................................................13
5 Instruction for Power Generation and Consumption
Management........................................................................ 15
5.1 PV Main Page Instructions...................................................15
5.2 Parameters ..........................................................................16
5.3 Coulometry ..........................................................................16
5.4 Curves .................................................................................17
6 FUNCTIONS DESCRIPTION ............................................ 18
6.1 Help Info ..............................................................................18
6.2 Indoor Unit ...........................................................................18
6.3 Single Unit Control ...............................................................19
6.4 All-Control Function..............................................................22
6.5 Group Control ......................................................................23
6.6 Schedule Management ........................................................25
6.7 Local Setting ........................................................................27
6.8 Engineering Setting..............................................................29
6.9 About ...................................................................................30

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1 Safety Notices (Please be sure to abide them)
Warning: If not abide them strictly, it may cause severe damage to the
unit or the people.
Note: If not abide them strictly, it may cause slight or medium damage to
the unit or the people.
This sign indicates that the items 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 the 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.
The communication cord must be shielded twisted pair line, which is
grounded reliably.
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.
The electricity consumption amount shown in the centralized controller is
only for reference, which cannot be used for calculating electricity charge.
Electricity charge is subject to the record of electric power company.

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3 Installation
Fig.3.1 Parts of Centralized Controller
No.
①②③④
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.
⑤⑥⑦⑧
Name
ScrewM4×12
(used
tosecure
earthing
wire)
Screw ST4.2×16 FA
(used to secure electric
box cover)
Electric box
cover
Matching
resistance
QTY
1
4
1
1

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Unit: mm
Fig.3.2 Dimension of Centralized Controller
Unit: mm
Fig.3.3 Dimension of Electric Box Cover

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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
(mm
2
)
Total
length
L(m)
Remark
Indoor
network
Shielded
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
IEC
60227-
5:2007
2×0.75
～
2×1.25
L≤1000
If cord size is
2×1mm2,
communication
cord can be
stretched longer.
But the total
length can’t
exceed 1500m.
Outdoor
network L≤500
To t al length of
communication
cord can’t exceed
500m.
(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
3.2.1 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
3.2.2 Power Supply
The centralized controller should 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 (mm
2
)
Single-cord soft
conductiveunsheathed cord
(60227 IEC 08)
IEC 60227-3:2007 1.5
3.2.3 Connection Method
There are two 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

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Method 2: Connect with outdoor network
Fig.3.5 Centralized Controller Connected with Outdoor Network
Wiring Instructions:
(1) The smart centralized controller is applicable to photovoltaic(PV) multi
VRF units, connectable with network of indoor units or the network of
outdoor units. One centralized controller can control up to 16 sets of
outdoor system and up to 128 sets of indoor unit.
(2) If 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, and
connect the shielded layer of twisted pair line to . 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.
(3) If 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, and connect
the shielded layer of twisted pair line to . A matching resistance needs
to be added with the communication cords at the G1 and G2 ports.

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(4) The 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".
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
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

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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.
①Enter into an unoccupied address by manually for the conflict
address, the address conflict can be solved after it set up success.
②Press 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.
③On the master unit of master system, if the mainboard has 7
buttons,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. If the mainboard
has 4 buttons, press and hold “SW1” for 5 seconds to enter the
to-be-selected status of function settings, press “SW1 (UP)” or
“SW2 (DOWN)” to select the function of “n5”, press “SW3” to enter
“n5” function settings, press “SW3” again to send the project
number offset command.

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3.3 Installation Procedure
Fig.3.6 Installation Diagram
Unit: mm
Fig.3.7 Diagram of Wooden or Plastic Plug

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Unit: mm
Fig. 3.8 Installation Holes of the Electric Box Rear Cover
Fig.3.6 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.3.7.
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.3.8.
(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 ⑥pull 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 shielded layer of twisted pair line to , and connect the

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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 MC.
(9) In step ⑨, connect the wire between touch screen and controller’s rear
cover.
3.4 Removal Procedure
Fig.3.9 Diagram of Removal
4 Display and Working Instructions
Fig.4.1 Main Page

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4.1 Main Page Display and Buttons
No.
Name
Instructions
1
Time zone
The present date, week and time
2 Help button Press this button to enter Help Info page
3 Setting button Press this button to enter setting page
4 PV button Press this button to enter PV 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.
6
Schedule
button Press this button to enter schedule page
7 Group button Press this button to enter group page
8
All-Control
button Press this button to enter All-Control page
9
Indoor Unit
button Press this button to enter indoor unit page
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
schedule
Group
Control
Press this button
to enter Group
control page
IDU Sort
Press this
button to enter
IDU sort page

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Display
Name
Meaning
Display
Name
Meaning
Edit
Press this button
to edit the 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
Left
Press this button
to return back to
previous page
Right
Press this
button to the
next page
Forward
Page
Shift
On the IDU sort
page, Press this
button to move
the selected IDU
forward one
page
Backward
Page
Shift
On the IDU sort
page, Press this
button to move
the selected
IDU backward
one page
Forward
Shift
On the IDU sort
page, Press this
button to move
the selected IDU
forward one
place
Backward
Shift
On the IDU sort
page, Press this
button to move
the selected
IDU backward
one place
Info
Press this button
to enter Info
page
Shield
Press this
button to
conduct shield
function of
wired controller
to nullify such
operation
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.

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(2) Icon + Te x t
According to the meaning of words, 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.
Dark indicates on/selected. Sleep function is on. Pressing the orange
sleep button can turn off the sleep function.
(3) Sliding
Sliding up/down to slide the group and setting page up&down.
(4) Sliding bar
Press and hold the sliding bar to drag up/down or left/right and to adjust the
value. For example the backlight setting, etc.
(5) Zone button
On the management pages of 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.

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Fig.4.2 Zone Buttons on the Homepage of Schedule
5 Instruction for Power Generation and Consumption
Management
5.1 PV Main Page Instructions
Fig.5.1 PV Main Page

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No.
Name
Instruction
①Electricity flow
cartoon
Dynamically display the electricity flow direction during
PV generation, grid supply and VRF consumption.
②Parameters
zone
The parameter of PV generation, grid supply and VRF
consumption.
③
PV power
generation
status
Display the on/off status of photovoltaic power
generation
④Menu
There are 3 buttons: Parameters, Coulometry and
Curves .Press the button to enter the corresponding
page.
5.2 Parameters
Press the parameters button on the PV main page to view the detailed
parameters.
Note: In the data of electric grid, it stands for power generation when power
supply amount is negative.
Fig.5.2 Parameters of Power Generation and Consumption Management
5.3 Coulometry
Press the Coulometry button on the PV main page to enter coulometry
page.
On the coulometry page, the electricity generation and consumption amount of

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each month of current year is displayed in curve chart and bar chart.
Fig.5.3 Coulometry of Power Generation and Consumption Management
5.4 Curves
Press the Curves button on the PV main page to enter curves page.
The curves page displays the curve of PV generation power, electric grid power
and unit power in real time.
Fig.5.4 Curves of Power Generation and Consumption Management