Gree XRZ180L/A-T User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Heat Storage Module
Models:
XRZ180L/A-T

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) In order to ensure reliability of product, the product may consume some power under
stand-by status for maintaining normal communication of system and preheating refrigerant
and lubricant. If the product is not to be used for long, cut off the power supply; please
energize and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using environment, otherwise it may
impact the using convenience.
(4) This product has gone through strict inspection and operational test before leaving the
factory. In order to avoid damage due to improper disassembly and inspection, which may
impact the normal operation of unit, please do not disassemble the unit by yourself. You can
contact with the special maintenance center of our company if necessary.
(5) 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.
(6) When the product is faulted and cannot be operated, please contact with our maintenance
center as soon as possible by providing the following information.
1)Contents of nameplate of product (model, cooling/heating capacity, product No.,
ex-factory date).
2)Malfunction status (specify the situations before and after the error occurs).
(7) All the illustrations and information in the instruction manual are only for reference. 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.
(8) 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 Product Introduction ..............................................................................3
3 Preparations for Installation...................................................................3
3.1 Standard Fittings .................................................................................3
3.2 Location for Installation .......................................................................3
3.3 Requirements for Communication Line ...............................................4
3.4 Wiring Requirements...........................................................................5
4 Installation Instructions..........................................................................5
4.1 Installation of Indoor Unit.....................................................................5
4.2 Pipe Connection ..................................................................................7
5 Wire Connection .....................................................................................8
5.1 Connection of Wire and Wiring Board Terminal...................................8
5.2 Power Cord Connection ......................................................................9
5.3 Connection of Communication Line of Heat Storage Module............10
6 General Maintenance............................................................................10
6.1 Maintenance Before Use-season ...................................................... 11
6.2 Maintenance After Use-season ......................................................... 11
7 Malfunction Codes of IDU .................................................................... 11
8 Troubleshooting.................................................................................... 11

Multi Variable Air Conditioners Heat Storage Module
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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 .
Follow this manual to
complete the installation
work. Please read this
manual carefully before
turning on or repairing the
unit.
Installation should be
performed by the
distributor or qualified
technicians. Do not install
the product by yourself.
Improper installation may
lead to water leakage,
electric shock or fire
hazard, etc.
Before installation, please
check whether the power
supply is complied with that
specified on the nameplate
and check the safety of the
power supply.
When installation is
finished, please check
whether the pipelines and
electric wires are
connected correctly to
avoid water leakage,
refrigerant leakage,
electric shock or fire, etc.
Be sure to use special
accessories and parts for
installation to prevent water
leakage, electric shock and
fire hazard, etc.
If refrigerant leakage
happens, please ventilate
the room immediately.
Diameter of power cord
should be large enough.
The damaged power cord
and connection wire must
be replaced with special
cables.
When the power cord is
connected, please fix the
electric box cover properly
to avoid safety accidents.

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Never fail to comply with
the nitrogen-charging
welding process. Do
charge nitrogen when
welding the pipes.
Never short circuit or
cancel the pressure switch
to prevent unit damage.
Never plug in or unplug the
power plug directly to turn
on or turn off the heat
storage module.
Open the door and
window frequently to keep
good ventilation for
avoiding oxygen deficit
when gas heater or oil
heater is used in the room.
The heat storage module
can be cleaned only when
it has been turned off and
the power has been cut off;
otherwise, it may cause
electric shock or injury.
Never spray or flush water
towards the heat storage
module; otherwise,
malfunction or electric
shock may happen.
Do not expose the heat
storage module to the
moist or corrosive
environment.
Do not repair the unit by
yourself. Wrong
maintenance may cause
electric shock or fire
hazard. Please contact
Gree appointed service
center for help.
If there are any abnormal
circumstances (such as
burning smell, etc.), please
turn off the unit and cut off
the main power supply
immediately, and then
contact Gree appointed
service center. If those
abnormal circumstances
still exit, the unit may be
damaged and it may lead
to electric shock or fire
hazard.
– –
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory
or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with
the appliance. Cleaning and user maintenance shall not be made by children without supervision.
Install units according to national wiring codes.
If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection device which has at least 3mm clearances in all poles, and disconnection must be
incorporated in the fixed wiring in accordance with the wiring rules.
Gree Electric Appliances, Inc. of Zhuhai will not assume responsibility for any personal injury or property loss
caused by improper installation, improper debugging, unnecessary repair or not following the instructions of this
manual.

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2 Product Introduction
Names of Key Components
Fig2.1
3 Preparations for Installation
NOTICE: Product graphics are only for reference. Please refer to actual products.
Unspecified measure unit is mm.
3.1 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No. Name Graphics Quantity Purpose
1 Insulating materials 2
Used for the joint of
gas pipe and liquid
pipe for indoor unit
2 Union nut 2
Used for the joint of
gas pipe and liquid
pipe for indoor unit
3
Spring washer M8, nut M8,
nut with washer M8, washer
M8
4 Used for hanging the
indoor unit
4 Tieline 6
Wrap the sponge at
the connection
position
5 Others
User Manual: 1 copy
Loosen-leaf of Instruction Manual: 1 copy (harmful substance content table)
Qualified Certificate: 1 copy
Bar Code : 1 copy
3.2 Location for Installation
(1) The top holder must be strong enough to support unit's weight.
(2) In order to make sure the space for maintenance, please install the heat storage
module according to the dimension described below.
(3) Keep the unit away from heating source, inflammable gas or smoke.
(4) This is a concealed ceiling type unit.
(5) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m from the
TV set and radio. Otherwise, these electrical appliances may have image interference
and noise (Even if the distance is 1m, when there is strong electric wave, noise may
still occur).

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(6) The appliance shall not be installed in the laundry.
Unit: mm
Fig 3.1
NOTICE:
①Installation of the unit must be in accordance with National Electric Codes and local
regulations.
②Improper installation will affect unit’s performance, so do not install the unit by yourself.
Please contact local dealer to arrange professional technicians for the installation.
③Do not connect power until all installation work is finished.
3.3 Requirements for Communication Line
NOTICE:
If the unit is installed in the place with strong electromagnetic interference, twisted pair line
with shielding function must be applied on the communication wire between heat storage
module and indoor unit (outdoor unit).
Fig 3.2
Material Type
Total Length L
(m/feet) of
Communication
Cable between
Indoor Unit and
Indoor (Outdoor) Unit
Wire size
(mm2/AWG)
Material
Standard Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18)
IEC
60227-5:2007
(1) If the wire diameter is enlarged
to 2×1 mm2 (2×AWG16), the
total communication line length
can reach 1500 m
(4921-1/4feet).
(2) The cord shall be Circular cord
(the cores shall be twisted
together).
(3) If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to
use shielded wire.

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3.4 Wiring Requirements
(1) Power Cord Size and Air Switch Capacity.
Model Power Supply Air Switch
Capacity(A)
Minimum Sectional
Area of Ground
Wire(mm
2
)
Minimum Sectional
Area of Power
Cord(mm
2
)
XRZ180L/A-T 220~240V-1Ph-50Hz
208~230V-1Ph-60Hz
6 1.0 1.0
NOTICE:
①Use copper wire only as unit's power cord. Operating temperature should be within its
rated value.
②If the power cord is more than 15m long, please increase properly the sectional area
of power cord to avoid accident due to overload.
③Above selection requirements: Power cord size is based on BV single-core wire
(2~4pc) at 40°C ambient temperature when laying across plastic pipe. Air switch is D
type and used at 40°C. If actual installation condition varies, please lower the capacity
appropriately according to the specifications of power cord and air switch provided by
manufacturer.
(2) Install cut-off device near the unit. The minimum distance between each stage of
cut-off device should be 3mm (The same for both heat storage module and outdoor
unit).
(3) If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person in order to avoid a hazard.
4 Installation Instructions
4.1 Installation of Indoor Unit
4.1.1 Outline Dimension and Installation Spots
Equip with a service port after lifting the unit. For the convenience of maintenance, the
service port should be on one side of the electric box and below unit’s lower level.
Below are the outline dimension applicable to heat storage module of XRZ180L/A-T：
Fig 4.1

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Below are dimensions of A, B, C, etc. for different models:
Unit: mm
Item
Model
A B C D E
XRZ180L/A-T
780
364
730
220
450
4.1.2 Punching of Bolt Spots and Bolt Installation
Punch holes on the installation area according to the 4 spots on the paper pattern; the
punching diameter may refer to the diameter of expansion bolt, about 60mm to 70mm depth, as
shown in Fig 4.2
Unit: mm
Fig 4.2
Insert the expansion bolt M10 into the hole and then drive the iron nail into the bolt, as
shown in Fig 4.3.
Fig 4.3
NOTICE:
The length of bolt depends on the installation height of the unit, bolts are field supplied.
4.1.3 Lift the Unit
Lift up the unit to the ceiling and secure it on the bolt. Use specialized nut to secure the
unit.
Unit: mm
Fig 4.4

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NOTICE:
①Before installation, please finish the preparation work of all pipes (connection pipe)
and wires (wired controller wire, connection wire of IDU and ODU) that need to be
connected with the indoor unit.
②Punch holes on the ceiling (air return opening or air inlet). Ceiling may have to be
strengthened to make it level and to prevent it from vibration. You may consult user or
constructor for details.
③If the ceiling is not strong enough, you can install a beam bracket in a corner and
secure the unit on the beam.
4.1.4 Horizontal Alignment
After the heat storage module is installed, remember to check the horizontal status of the
whole unit. It should be horizontal from front to back and slant 1% from left to right, following the
drainage direction, as shown in Fig 4.5.
Fig 4.5
4.2 Pipe Connection
(1) Direct the flaring of copper pipe to the center of screwed connection and then screw
the flaring nut tight as shown in Fig 4.6
(2) Use a torque wrench to tighten up the flaring nut until the wrench gives out a click
sound.
Fig 4.6
Torque for tightening nut
Pipe diameter (mm)
Torque (N·m)
Φ6.35
15~30
Φ9.52
35~40
Φ12.7
45~50
Φ15.9
60~65

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(3) The pipe should not be bent too much or it may crack. Use a pipe bender when
bending the pipe.
(4) Use a sponge to wrap the uninsulated connection pipe and the joint. Then tie it tight
with a plastic tape.
5 Wire Connection
WARNING!
Before obtaining access to terminals, all supply circuits must be disconnected.
(1) For personal safety, the air conditioner must be properly grounded.
(2) Read carefully the voltage indicated on the nameplate before connecting wires. Then
connect wires according to the wiring diagram. Improper wiring will lead to abnormal
operation or damage the unit.
(3) Power capacity should be large enough. Sectional area of room wires should be
above 2.5mm2.
(4) For unit's power supply, please use specialized branch circuit and specialized power
socket.
(5) All wiring must comply with standards to ensure safe and correct operation.
(6) Install specialized branch circuit breaker according to related laws and regulations and
electrical standards.
(7) All wiring must use pressure terminal or single wire. Multi-twisted wire that connects
directly to the wiring board may cause fire hazard.
(8) Keep the wires away from refrigerant pipe, compressor and fan.
(9) Do not alter the inner wires of air conditioner. Manufacturer does not assume
responsibility for damage or abnormal operation due to this reason.
(10) If the unit is installed in places with strong electromagnetic interference, it's
recommended to use twin-twisted shield wire. During wire connection, please pay
attention that the metal shield layer of the twin-twisted wire must be grounded (outer
case) in order to prevent the unit from electromagnetic interference.
(11) Communication line should be separated from the power cord and the connecting wire
of IDU and ODU.
(12) If the project needs higher static pressure, you can set it through the wired controller.
5.1 Connection of Wire and Wiring Board Terminal
(1) Connection of Single Branch Line (shown in Fig 5.1)
1) Use a wired stripper to strip away about 25mm of the insulation layer at the end of
single branch line so that the single-core wire can be exposed.
2) Use a screwdriver to remove the terminal screw on the terminal board.
3) Use a plier to bend the end of single branch line until it forms a circle that has a
similar size with the screw.
4) Lead the screw across the circle of the single branch line and fix it on the wiring
board.

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(2) Connection of Multi-twisted Wire (shown in Fig 5.2)
1) Use a wired stripper to strip away about 10mm of the insulation layer at the end of
multi-twisted wire.
2) Use a screwdriver to remove screw on the wiring board of air conditioner.
3) Use a round terminal fastener or a plier to securely fasten the round terminal with
each core wire of the multi-core wire.
4) Confirm each position of core wire on the round terminal and then use a
screwdriver to tighten the terminal screw.
Unit: mm
Fig 5.1 Fig 5.2
5.2 Power Cord Connection
NOTICE:
Power supply of each indoor unit and heat storage module must be from the same source.
Fig 5.3
For heat storage module that uses single-phase power
1) Remove the cover of electric box of heat storage module.
2) Lead the power cord across the rubber ring.

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3) Connect the power cord to the L, N terminals and the grounding screw.
4) Fasten the power cord with a wire clamp.
5.3 Connection of Communication Line of Heat Storage Module
(1) Open the cover of electric box of heat storage module.
(2) Lead the communication line across the rubber ring.
(3) Connect the communication line to terminal D1 and D2 on the 2-digit wiring board of
heat storage module, as shown in Fig 5.4.
Fig 5.4
Fig 5.5
(4) Secure the communication line with the wire clamp on the electric box.
(5) In order to ensure the reliability of communication between heat storage module and
ODU and the communication among each IDU, add a matched resistance(supplied in
a package before ex-factory) on the wiring board of the last indoor unit in a series
connection. The matched resistance should be connected in parallel between terminal
screw D1 and D2, as shown in Fig 5.5.
6 General Maintenance
WARNING!
①Before the cleaning, turn unit off and disconnect power supply. Otherwise, it may
result in electric shock or personal injury.
②When cleaning the heat storage module, please use stable standing platform.
③Do not clean the unit using hot water of over 45 to prevent the unit from losing color or
deforming.
④Volatile liquid like thinner or gasoline will damage the heat storage module.
⑤If any problem, please contact after-sales service agent for assistance.

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6.1 Maintenance Before Use-season
(1) Check whether grounding wire is in good condition.
(2) Check whether wire connection is correct.
6.2 Maintenance After Use-season
If you won’t use the heat storage module for a long time, disconnect power please.
7 Malfunction Codes of IDU
Error Code Content Error Code Content Error
Code
Content
d4
Inlet Pipe
Temperature Sensor
Error
d6
Outlet Pipe
Temperature
Sensor Error
dA
Indoor Unit
Hardware Address
Error
C0
Communication
malfunction between
IDU, ODU and IDU’s
wired controller
C5
Alarm because project
code of IDU is
inconsistent
— —
8 Troubleshooting
If your heat storage module is not working well, please check the following table first before
asking for service:
Phenomenon Troubleshooting
Alarm because project
code of IDU is
inconsistent
Press SW1 and SW2 buttons on main board of heat storage module at the same
time for at least 5s and release. Project code is displayed on digital tube. Press
SW1(UP)button or SW2(DOWN)button to select the project code. Press SW3 to
make it confirmed.
NOTICE:
If heat storage module still fails to work normally after checking and handling as described
above, please stop using it immediately and contact local service center for assistance.