Cooper & Hunter CHV-5S224NMX User manual

Owner's Manual
Air Conditioners
Models:
CHV-5S224NMX
CHV-5S280NMX
CHV-5S335NMX
CHV-5S400NMX
CHV-5S450NMX
CHV-5S504NMX
■
■
■
CHV-5S2460NMX
Thank you for choosing Cooper&Hunter 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 cooperandhunter.com for electronic version.
Cooper&Hunter reserves the right to interpret this manual which will be subject to any change
due to product improvement without further notice.
Cooper&Hunter International Corporation, Inc. of Zhuhai reserves the final right to interpret
this manual.
D.C. Inverter
Multi VRF Modular

Preface
Cooper&Hunter DC Inverter Multi VRF System, with the most advanced technologies in the
world, uses eco-friendly refrigerant R410A as its cooling medium. For correct installation and
operation, please read this manual carefully. Before reading the manual, please note that:
(1) For safety operation, please strictly follow the instructions in this manual.
(2) During operation, the gross rated capacity of working IDU should be within the gross rated
capacity of ODU. Otherwise, IDU’s cooling/heating performance will be reduced.
(3) This manual must be in the hands of direct operators or maintenance men.
(4) In case of malfunction and operation failure, please examine the following items and
contact our authorized service centers as soon as possible.
1) Nameplate (model, cooling capacity, product code, ex-factory date).
2) Malfunction status (detail description of conditions before and after malfunction occurs)
(5) All units have been strictly tested and proved to be qualified before ex-factory. To avoid
unit damage or even operation failure which may be caused by improper disassembly,
please do not disassemble units by yourself. If disassembly is needed, please contact our
authorized serve centers for help.
(6) All graphics and information in this manual are only for reference. Manufacturer reserves
the right for changes in terms of sales or production at any time and without prior notice.
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.
DISPOSAL： Do not dispose this product as unsorted municipal waste. Collection of such waste
separately for special treatment is necessary.

Contents
1 Safety Precautions...................................................................................................................... 1
2 Product Introduction.................................................................................................................... 3
2.1 Names of Main Parts......................................................................................................... 3
2.2 Combinations of Outdoor Units......................................................................................... 4
2.3 Combinations of Indoor and Outdoor Units ...................................................................... 5
2.4 The Range of Production Working Temperature............................................................... 6
3 Preparation before Installation.................................................................................................... 7
3.1 Standard Parts .................................................................................................................. 7
3.2 Installation Site.................................................................................................................. 7
3.3 Piping Work Requirements............................................................................................. 12
4 Installation Instruction................................................................................................................ 12
4.1 Physical Dimension of the Outdoor Unit and Mounting Hole.......................................... 12
4.2 Connection Pipe.............................................................................................................. 14
4.3 Installation of the Connection Pipe................................................................................. 27
4.4 Air Purging and Refrigerant Charge................................................................................ 31
4.5 Electric Wiring................................................................................................................. 32
4.6 System Communication.................................................................................................. 38
4.7 Connection Method and Steps for System Communication............................................ 42
4.8 External Electrical Wiring Diagram................................................................................. 47
5 Check Items after Installation and Trial Run. ............................................................................ 48
5.1 Check Items after Installation.......................................................................................... 48
5.2 Trial Run.......................................................................................................................... 49
6 Common Malfunction and Troubleshooting.............................................................................. 61
7 Error Indication.......................................................................................................................... 63
8 Maintenance and Care.............................................................................................................. 66
8.1 Outdoor Heat Exchanger................................................................................................ 66
8.2 Drain Pipe ....................................................................................................................... 66
8.3 Notice before Seasonal Use........................................................................................... 66
8.4 Maintenance after Seasonal Use.................................................................................... 67
8.5 Parts Replacement.......................................................................................................... 67
9 After-sales Service.................................................................................................................... 67

D.C. Inverter Multi VRF Modular
1
1 Safety Precautions
Means items that must be forbidden! Otherwise, it may lead to personal injury or death
or serious damage.
Refers to things that must be followed. Incorrect operation may cause personal injury or
death.
Follow this instruction to
complete the installation work.
Please carefully read this
manual before unit startup and
service.
Installation should be
conducted by dealer or
qualified personnel. Please do
not attempt to install the unit
by yourself. Improper handling
may result in water leakage,
electric shock or fire disaster
etc.
Before installation, please check
if the power supply is in
accordance with the
requirements specified on the
nameplate. And also take care of
the power safety.
Make sure the unit can be
earthed properly and soundly
after plugging into the socket
so as to avoid electric shock.
Please do not connect the
ground wire to gas pipe, water
pipe, lightning rod or
telephone line.
Be sure to use the exclusive
accessory and part to prevent
the water leakage, electric shock
and fire accidents.
If refrigerant leakage happens
during installation, please
ventilate immediately.
Poisonous gas will emerge if
the refrigerant gas meets fire.
Wire size of power cord should
be large enough.The damaged
power cord and connection wire
should be replaced by exclusive
cable.
After connecting the power
cord, please fix the electric
box cover properly in order to
avoid accident.
Never fail to comply with the
nitrigen charge
requirements.Charge nitrogen
when welding pipes.
Never short-circiut or cancel
the pressure switch to prevent
unit damage.
Please firstly connect the wired
controller before energization,
otherwise wired controller can
not be used.
Before using the unit, please
check if the piping and wiring
are correct to avoid water
leakage, refrigerant leakage,
electric shock, or fire etc.

D.C. Inverter Multi VRF Modular
2
Do not insert fingers or objects
into air outlet/inlet grille.
Open the door and window
and keep good ventilation in
the room to avoid oxygen
deficit when the gas/oil
supplied heating equipment is
used.
Never start up or shut off the air
conditioner by means of directly
plug or unplug the power cord.
Turn off the unit after it runs at
least five minutes; otherwise it
will influence oil return of the
compressor.
Do not allow children operate
this unit.
Do not operate this unit with
wet hands.
Turn off the unit or cut off the
power supply before cleaning
the unit, otherwise electric shock
or injury may happen.
Never spray or flush water
towards unit, otherwise
malfunction or electric shock
may happen.
Do not expose the unit to the
moist or corrosive
circumstances.
Electrify the unit 8 hours
before operation. Please
switch on for 8 hours before
operation. Do not cut off the
power when 24 hours
short-time halting (to protect
the compressor).
Volatile liquid, such as diluent or
gas will damage the unit
appearance.Only use soft cloth
with a little neutral detergent to
clean the outer casing of unit.
Under cooling mode, please
don't set the room temperature
too low and keep the
temperature difference
between indoor and outdoor
unit within 5.
If anything abnormal happens
(such as burning smell), please
power off the unit and cut off the
main power supply, and then
immerdiately contact C&H
appointed service center.If
abnormality keeps going, the
unit might be damaged and lead
to electric shock or fire.
User is not allowed to repair
the unit. Fault service may
cause electric shock or fire
accidents. Please contact
C&H appointed service
center for help.
Cooper&Hunter will not assume responsibility of personal injury or equipment damage
caused by improper installation and commission, unnecessary service and incapable of following
the rules and instructions listed in this manual.

D.C. Inverter Multi VRF Modular
3
2 Product Introduction
Cooper&Hunter Multi VRF Modular System adopts inverter compressor technology. According to
change the displacement of compressor, stepless capacity regulation within range of 10%-100%
can be realized. Various product lineup is provided with capacity range from 22.4kW to 246kW,
which can be widely used in working area and especially applicable to the place with variable
load change.Cooper&Hunter air conditioner is absolutely your best choice.
2.1 Names of Main Parts
Fig.1

D.C. Inverter Multi VRF Modular
4
NO.
①
②
③
④
⑤
Name
Fan, Motor
Electric Box
Assembly
Valve interface
Power cord
through-hole
Communication
code through-hole
Note: The picture is only used for reference and the actual product prevails.
2.2 Combinations of Outdoor Units
Model(Single)
CHV-5S680NMX
CHV-5S730NMX
CHV-5S785NMX
CHV-5S850NMX
Model(Combined)
CHV-5S280NMX +
CHV-5S400NMX
CHV-5S280NMX +
CHV-5S450NMX
CHV-5S280NMX +
CHV-5S504NMX
CHV-5S280NMX +
CHV-5S560NMX
Model(Single)
CHV-5S900NMX
CHV-5S960NMX
CHV-5S1010NMX
CHV-5S1065NMX
Model(Combined)
CHV-5S280NMX +
CHV-5S615NMX
CHV-5S335NMX +
CHV-5S615NMX
CHV-5S400NMX +
CHV-5S615NMX
CHV-5S450NMX +
CHV-5S615NMX
Model(Single)
CHV-5S1330NMX
CHV-5S1180NMX
CHV-5S1235NMX
CHV-5S1300NMX
Model(Combined)
CHV-5S504NMX +
CHV-5S615NMX
CHV-5S560NMX +
CHV-5S615NMX
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S280NMX +
CHV-5S450NMX +
CHV-5S560NMX
Model(Single)
CHV-5S1350NMX
CHV-5S1410NMX
CHV-5S1460NMX
CHV-5S1515NMX
Model(Combined)
CHV-5S280NMX +
CHV-5S450NMX +
CHV-5S615NMX
CHV-5S335NMX +
CHV-5S460NMX +
CHV-5S615NMX
CHV-5S280NMX +
CHV-5S560NMX +
CHV-5S615NMX
CHV-5S280NMX +
CHV-5S615NMX +
CHV-5S615NMX
Model(Single)
CHV-5S1580NMX
CHV-5S1630NMX
CHV-5S1685NMX
CHV-5S1750NMX
Model(Combined)
CHV-5S335NMX +
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S400NMX +
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S450NMX +
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S504NMX +
CHV-5S615NMX +
CHV-5S615NMX
Model(Single)
CHV-5S1800NMX
CHV-5S1854NMX
CHV-5S1908NMX
CHV-5S1962NMX
Model(Combined)
CHV-5S560NMX +
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S615NMX +
CHV-5S615NMX +
CHV-5S615NMX
CHV-5S280NMX+
CHV-5S450NMX+
CHV-5S560NMX+
CHV-5S615NMX
CHV-5S280NMX+
CHV-5S504NMX+
CHV-5S560NMX+
CHV-5S615NMX
Model(Single)
CHV-5S2016NMX
CHV-5S2072NMX
CHV-5S2128NMX
CHV-5S2184NMX
Model(Combined)
CHV-5S280NMX+
CHV-5S560NMX+
CHV-5S560NMX+
CHV-5S615NMX
CHV-5S280NMX+
CHV-5S560NMX+
CHV-5S615NMX+
CHV-5S615NMX
CHV-5S280NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
CHV-5S335NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
Model(Single)
CHV-5S2240NMX
CHV-5S2295NMX
CHV-5S2350NMX
CHV-5S2405NMX
Model(Combined)
CHV-5S400NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
CHV-5S450NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
CHV-5S504NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
CHV-5S560NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX
Model(Single)
CHV-5S2460NMX
Model(Combined)
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX+
CHV-5S615NMX

D.C. Inverter Multi VRF Modular
5
2.3 Combinations of Indoor and Outdoor Units
(1) The following table indicates the number of IDU for ODU
ODU model
Max number of connectable IDU (unit)
CHV-5S224NMX
13
CHV-5S280NMX
16
CHV-5S335NMX
19
CHV-5S400NMX
23
CHV-5S450NMX
26
CHV-5S504NMX
29
CHV-5S560NMX
33
CHV-5S615NMX
36
CHV-5S680NMX
39
CHV-5S730NMX
43
CHV-5S785NMX
46
CHV-5S850NMX
50
CHV-5S900NMX
53
CHV-5S960NMX
56
CHV-5S1010NMX
59
CHV-5S1065NMX
63
CHV-5S1130NMX
64
CHV-5S1180NMX
64
CHV-5S1235NMX
64
CHV-5S1300NMX
64
CHV-5S1350NMX
64
CHV-5S1410NMX
66
CHV-5S1460NMX
69
CHV-5S1515NMX
71
CHV-5S1580NMX
74
CHV-5S1630NMX
77
CHV-5S1685NMX
80
CHV-5S1750NMX
80
CHV-5S1800NMX
80
CHV-5S1845NMX
80
CHV-5S1908NMX
80
CHV-5S1962NMX
80
CHV-5S2016NMX
80
CHV-5S2072NMX
80
CHV-5S2128NMX
80
CHV-5S2184NMX
80
CHV-5S2240NMX
80
CHV-5S2295NMX
80
CHV-5S2350NMX
80
CHV-5S2405NMX
80
CHV-5S2460NMX
80

D.C. Inverter Multi VRF Modular
6
The total capacity of indoor units should be within 50%~135% of that of outdoor units.
Fig.2
Fig.2 is the combination view of the ODU of Modular DC Inverter Multi VRF System and the
IDU of Multi VRF System. IDU can be cassette type, one-way cassette type, wall-mounted type,
duct type, etc. When any one IDU receives operation signal, ODU will start to work according to
the capacity; when all IDUs stop, ODU will also stop.
2.4 The Range of Production Working Temperature
Cooling
Ambient temperature: -5~52
Heating
Ambient temperature: -20~24
When the indoor units are all VRF fresh air processor, the unit operating range is as follows:
Cooling
Ambient temperature: 16°C~45°C
Heating
Ambient temperature: -7°C~16°C
If the temperature is beyond the range, the safety protection measure of the unit may take
effect, and the air conditioning unit will stop.

D.C. Inverter Multi VRF Modular
7
3 Preparation before Installation
Note: The picture is only used for reference and the actual product prevails. Unit: mm.
3.1 Standard Parts
Please use the following standard parts supplied by Cooper&Hunter.
Parts for Outdoor Unit
Number
Name
Picture
Quantity
Remarks
1
Owner's Manual
1
2
Wiring (match with
resistance)
1
Must be connected to the last IDU
of communication connection
3
Mark (Master )
2
Attach on the wired controller of
master IDU or on the front panel
3.2 Installation Site
Forbidden Items! It indicates that improper operation might lead to human casualty or
sever injury.
Items need to be followed. It indicates that improper operation might lead to personal
injury or property damage.
Install the unit at a place where
is adequate to withstand the
weight of the unit and make sure
the unit would not shake or fall
off.
Never expose the unit under
direct sunshine and
rainfall.Install the unit at a
place where is against dust,
typhoon and earthquake.
Try to keep the unit away from
combustible,inflammable and
corrosive gas or exhaust gas.
Leave some space for heat
exchanging and servicing so
as to guarantee unit normal
operation.
Keep the indoor and outdoor
units close to each other as
much as possible so as to
decrease the pipe length and
bends.
Never allow children to
approach to the unit and take
measures to prevent children
touching the unit.

D.C. Inverter Multi VRF Modular
8
3.2.1 When the outdoor unit is totally surrounded by walls, please refer to following
figures for space dimension.
3.2.1.1 Space dimension for single-module unit
Fig. 3
3.2.1.2 Space dimension for dual-module unit
Fig. 4
3.2.1.3 Space dimension for three-module unit
Fig.5

D.C. Inverter Multi VRF Modular
9
3.2.1.4 Space dimension for four-module unit
Fig.6
3.2.2 When there is wall (or similar obstruction) above the unit, keep the distance
between the unit top and the wall at least 300mm or above. When the unit is located in
a totally open space with no obstructions in four directions, keep the distance between
the unit top and wall at least 1500mm or above (See Fig.7). When space is limited
within 1500mm or the unit is not set in an open space, air return pipe is required to be
installed in order to keep good ventilation (See Fig.8).
Fig.7 Fig.8

D.C. Inverter Multi VRF Modular
10
3.2.3 Space dimension for multiple-module unit
For keeping good ventilation, make sure there is no obstructions above the unit.
When the unit is located at a half-open space (front and left/right side is open), install the unit
as per the same or opposite direction.
Fig.9
Fig.10
3.2.4 Take seasonal wind into consideration when installing the outdoor unit
（1）Anti-monsoon installation requirements for unit not connecting exhaust duct:

D.C. Inverter Multi VRF Modular
11
Fig.11
（2）Anti-monsoon installation requirements for unit connecting exhaust duct:
Fig.12
3.2.5 Take snow into consideration when installing the outdoor unit
Fig.13

D.C. Inverter Multi VRF Modular
12
3.3 Piping Work Requirements
Refer to the table below for piping work requirements.
R410A Refrigerant System
Outer Diameter (mm/inch)
Wall Thickness (mm)
Type
Φ6.35(1/4)
≥0.8
0
Φ9.52(3/8)
≥0.8
0
Φ12.70(1/2)
≥0.8
0
Φ15.9(5/8)
≥1.0
0
Φ19.05(3/4)
≥1.0
1/2H
Φ22.2(7/8)
≥1.5
1/2H
Φ25.40(1/1)
≥1.5
1/2H
Φ28.60(9/8)
≥1.5
1/2H
Φ34.90(11/8)
≥1.5
1/2H
Φ38.10(12/8)
≥1.5
1/2H
Φ41.30(13/8)
≥1.5
1/2H
Φ44.5(7/4)
≥1.5
1/2H
Φ54.1(17/8)
≥1.5
1/2H
4 Installation Instruction
4.1 Physical Dimension of the Outdoor Unit and Mounting Hole
Outline and Physical Dimention of CHV-5S224NMX and CHV-5S280NMX unit
Fig.14

D.C. Inverter Multi VRF Modular
13
Outline and Physical Dimention of CHV-5S335NMX, CHV-5S400NMX and
CHV-5S450NMX unit
Fig.15

D.C. Inverter Multi VRF Modular
14
Outline and Physical Dimention of CHV-5S504NMX, CHV-5S560NMX and
CHV-5S615NMX unit
Fig.16

D.C. Inverter Multi VRF Modular
15
4.2 Connection Pipe
4.2.1 Schematic Diagram of Piping Connection
Fig.17

D.C. Inverter Multi VRF Modular
16
4.2.2 Schematic Diagram of Piping Sequence
CHV-5S224NMX and CHV-5S280NMX
Fig.18
CHV-5S335NMX, CHV-5S400NMX and CHV-5S450NMX
Fig.19

D.C. Inverter Multi VRF Modular
17
CHV-5S504NMX, CHV-5S560NMX and CHV-5S615NMX
Fig.20
4.2.3Allowable pipe length and drop height among indoor and outdoor units
Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is
shown in the figure below.
Remark: Equivalent length of one Y-type manifold is about 0.5m.
Fig.21
L10: Length from the first branch to the farthest IDU;