Cooper & Hunter CHV5 Home HWC16NK User manual

Model:
HWC16NK
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.cooperandhunter.com.
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, Inc. reserves the final right to interpret this manual.
Hot water converter
Owner's Manual
Hot water converter of CHV5 Home

Preface
Thank you for choosing Cooper&Hunter products.
This is CHV5 HOME unit, which includes outdoor unit, hot water converter, water tank, multi
VRF indoor unit and its related fittings. This unit possesses the following functions: cooling,
heating, water heating, water heating under cooling mode, water heating under heating mode.
This system has acquired the inventive patents of several countries.
In order for better and safely use this product, please read this instruction manual carefully
before installation and using. Pay attention to the notices for using and maintenance, and keep
this manual well for further reference.
CHV5 HOME is a kind of professional home appliance; incorrect installation may cause
damage or danger. Therefore, corresponding installation and maintenance should be done by
professional personnel. Please contact with the local installation and maintenance station of our
company when installing the unit, and conduct installation according to instruction. Right of
interpretation of this instruction manual belongs to Cooper&Hunter, Inc., there will be no further
notices for any modifications.
If the product is not used in winter for a short period, please make sure that the unit is
energized for 24 hours a day. If it is not used for long in winter, please drain the water inside the
unit, the water tank and pipeline to prevent the system from being frozen; after draining the water,
cut off the power of hot water converter. If it is not convenient for you to drain the water, please
directly contact with our local dealers or service station, we will send professional personnel to
provide checkup, drainage, debugging and maintenance services for value.

Contents
1 INTRODUCTION TO USERS.................................................................................. 1
2 SAFETY NOTICES.................................................................................................. 1
3 PRODUCT FEATURES........................................................................................... 2
4 STRUCTURE AND PERFORMANCE PARAMETER OF UNIT............................... 3
4.1 INTERNAL STRUCTURE OF HOT WATER CONVERTER ............................................... 3
4.2 INTRODUCTION TO OUTLINE DIMENSION AND APPEARANCE OF HOT WATER
CONVERTER......................................................................................................... 3
4.3 MODEL SELECTION FOR ODU, HOT WATER CONVERTER,WATER TANK.................... 4
4.4 MODELAND SPECIFICATION OF PRESSURE BEARING WATER TANK ........................... 4
5 INSTALLATION OF UNIT ........................................................................................ 4
5.1 INSTALLATION OF PRODUCT................................................................................... 4
5.2 DEBUGGING....................................................................................................... 12
5.3 NOTICES ........................................................................................................... 13
6 ERROR DISPLAY.................................................................................................. 14
7 ELECTRIC CONTROL INSTRUCTION................................................................. 14
8 TROUBLESHOOTING........................................................................................... 15
8.1 ERROR CODE FOR HOT WATER CONVERTER .......................................................... 15
8.2 COMMON MALFUNCTIONS.................................................................................... 15
8.3AFTER-SALES SERVICE ....................................................................................... 15

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1 Introduction to Users
（1）Before conducting any maintenance and repair for the converter, please cut off the
power first; the converter is not allowed to be adjusted or maintained by
nonprofessional personnel.
（2）Please make sure that the power socket is in conformity with the national standard and
be reliably grounded. It is not allowed to use the converter without reliable grounding.
（3）Make sure that the water tank has been filled with water before energizing the unit,
otherwise the unit may be damaged.
（4）Hot water of over 50℃may cause scald, please make sure that the hot water is mixed
with cold water before using the water. When the ambient temperature is below 0℃,
and no people in the room for long, and the converter is de-energized, please drain the
water tank.
（5）After draining the water inside the water tank, please cut off the power of hot water
converter.
（6）Hot water inside the water tank cannot be drunk. Because long-term using of water
tank may generate water scale, and water quality is bad. So please use clean water to
wash the food again after using the water inside the water tank to wash the food.
（7）The default setting water temperature of converter is 50℃. If water temperature is too
high, the COP of unit will decrease accordingly.
（8）The most energy-saving mode is water heating under cooling mode; the unit will
automatically estimate to exert the heat recovery effect to the most.
（9）This unit has fast water heating function.
2 Safety Notices
Please read this manual carefully before using the unit, and operate according to the
instructions.
Please especially pay attention to the meanings of the following signs:
Warning: it means improper operation may cause death or severe damage to people.
Caution: it means improper operation may cause injury to people or damage to property.
Warning!
①Please do not place gasoline or related inflammables near the converter, otherwise it may cause fire or
accident.
②The water temperature value displayed in the display screen of wired controller for water tank is the water
temperature near the detecting probe, generally water outlet temperature of water tank is higher than the
displayed temperature in the display screen. Please add and mix with cold water before using the water, and
then adjust the needed water temperature to avoid scald.
③Power switch of converter should be installed in dry place; do not operate the power switch with wet hands,
otherwise it may cause electric shock or damage.
Caution!
①If the converter is faulted, it should be repaired only by professional aftersales personnel; not professional
person should not remove or maintain the converter.
②When a child taking shower, an adult must instruct aside; do not allow a child to operate the converter.

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3 Product Features
（1）Energy-saving and Eco-friendly
Heat the water with waste heat from the operation of air conditioner and affluent heat source
in the air, the COP can be up to 7.0. In water heating under cooling mode, the heat recovery can
be optimized and controlled, which is equal to heating the water for free.
（2）Safe and Reliable
This series of unit adopts hot water converter, so that the heat can be transferred from
outdoor unit to the water tank with internal coil; the inner pot and outer pot of water tank with
internal coil are thermal insulating design for safe operation. Moreover, the unit adopts
waterway-free design for better frost resistance, less loss in hot water pipeline, and lower energy
consumption. In this way can avoid hidden danger and ensure safety of users.
（3）Convenient to use
Water heating temperature can be set within 35℃～55℃. The hot water can be supplied to
washroom, kitchen, and other places at the same time.
（4）Convenient to operate
User can select standard water heating mode, nighttime operating mode, or advanced preset
mode to set the water temperature at will, and turn on or turn off the unit according to water
temperature and water using situations, so as to ensure instant heating and instant use of hot
water in 24 hours. Furthermore, user can set to operate the unit by avoiding the peak time for
electricity using, so as to reduce electricity charge and tripping operation phenomenon.
（5）Convenient to install
The unit adopts water tank with external coil, the hot water is supplied by the water pressure
via tap water network. There is no need to add water pump or related fittings, therefore installation
procedures are simplified.

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4 Structure and Performance Parameter of Unit
4.1 Internal Structure of Hot Water Converter
Hot water converter mainly consists of electric box sub-assy, magnet valve sub-assy, electric
expansion valve sub-assy, electric controller, etc., and the internal structure is shown as below.
Fig. 4.1
4.2 Introduction to Outline Dimension and Appearance of Hot Water
Converter
Fig. 4.2
air pipe
air pipe
high-pressure
air pipe
liquid pipe
high-pressure
air pipe
liquid pipe
liquid pipe
Connect
to indoor unit
Connect
to water tank
Connect to outdoor unit

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4.3 Model Selection for ODU, Hot Water Converter, Water Tank
Type of ODU
ODU Model
Hot Water
Converter
Water Tank
Model
Remarks
Side discharge
ODU
C H V-5 S H H 120N K
C H V-5 S H H 140N K
CHV-5SHH160NK
HWC16NK
WT200SW1.5EHK
Air conditioner +
hot water
4.4 Model and Specification of Pressure Bearing Water Tank
Water Tank
Model
Volume
Dimension
(external
diameter×hei
ght)
Power of
auxiliary
heating
Cooling water
inlet tube
Hot water
outlet tube
L
mm
W
mm
mm
WT200SW1.5EHK
200
Φ462×1919
1500
G1/2
G1/2
5 Installation of Unit
5.1 Installation of Product
5.1.1 Pipeline Connection for Hot Water System
Preparation of pipeline: cooling water inlet tube and hot water outlet tube for water tank must
adopt hot water tube. It is recommended to use the PPR tube with nominal external diameter of
G1/2, and should adopt S2.5 (3.4mm wall thickness) series.
Installation for inlet and outlet tube of water tank: inlet water tube must be installed with check
valve (note the installing direction of check valve, the “→” arrow directs to the heat insulating water
tank), filter, cut-off valve, and the installing order must be the same as the installing sketch map of
unit. At least one check valve should be installed in the water outlet tube.
Installation for blow-off pipe in bottom of water tank: lead the drain outlet with PPR tube to the
floor drain, one check valve must be installed in the blow-off pipe and it should be installed in the
position that is convenience for operation.
After all the pipelines are well connected, conduct leak detection first (for specific leak
detection operation, please refer to debugging part of the unit). After confirming there is no
leakage, conduct thermal insulation for all the water pipeline system, especially for the joints such
as valves and pipe joints. It is recommended to use the thermal insulating cotton with thickness not
less than 15mm. After covering the cotton, use the tieline to truss the water pipe, water
temperature sensor, and electric wire.
5.1.2 Pipeline Connection for Refrigerant System
The pipeline for hot water converter to connect to indoor unit has been sealed by welding
before leaving the factory. The copper tube for refrigerant of indoor unit is led out from hot water
converter; the sealed tube of indoor unit should be unsoldered. Sketch map for installation is as
below. Conduct thermal insulation for the refrigerant copper tube, and thickness of thermal
insulating material should not be less than 8mm. Make sure that the refrigerant copper tube is
firmly sealed and connected without leakage.

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Size of the air pipe and liquid pipe for hot water converter used for connecting to water tank
isφ12.7/φ9.5; size of the air pipe and liquid pipe for water t a n k isφ9.5/φ6.4. When hot water
converter connects to water tank, it requires connecting tube with size ofφ9.5 toφ12.7, andφ6.4
toφ9.5 (hot water converter has been equipped with connecting tube, the connecting tube should
be installed in water tank side).
Sketch map for installation of connection of side discharge outdoor unit, hot water converter
and water tank:
Fig.5.1
Notes:
①The hot water converter is equipped with upper and lower temperature sensor; they are connected in the air,
the upper temperature sensor corresponds to red terminal, the lower temperature sensor corresponds to
white terminal.
②Lead the upper water temperature sensor from water tank sensor outlet 1 to the upper water temperature
sensor terminal for hot water converter.
③Lead the lower water temperature sensor from water tank sensor outlet 2 to the lower water temperature
sensor terminal for hot water converter.
④Distance between hot water converter and water tank should not be over 10 meters.
Notes:
Horizontal distance between hot water converter and thermal insulating water tank should not be over 10
meters, and vertical fall should not be over 3 meters. It is recommended to install the thermal insulating water tank
in lower position, and hot water converter in the upper position, or install them in the same level.

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Fig. 5.2
Notes:
①Prepare materials according to the above dimension and specification of terminals. If the cut off valve is
installed outdoors, it is recommended to use PPR pipe to avoid freezing.
②Install the water pipelines only after well fixing the hot water converter. During connecting the pips, prevent
dust or other sundries from entering into the pipeline system.
③Hot water is supplied by thermal insulating pressure bearing water tank through the pressure of tap water,
thus hot water can be acquired only there is tap water.
④Keep the cut-off valve in cooling water inlet of water tank open when using the unit.
⑤When user won’t use the unit for a long time, the unit should be de-energized and the water inside water tank
should be drained to avoid freeze of unit in cold weather.
5.1.3 Requirements for Refrigerant Connecting Pipe between ODU and Hot Water
Converter
Outdoor unit and hot water converter are connected via refrigerant pipe
Refrigerant pipe
Diameter (mm)
Length≤d(m)
Connecting method
Air pipe
15.9
10
Horn mouth
Liquid pipe
9.5
10
Horn mouth
High-pressure air pipe
12.7
10
Horn mouth
5.1.4 Specification for Interface of Water Tank
Hot water converter and water tank are connected via copper tube.
Specification of Interface
Model
Name
Thread of Interface
Remarks
Hot water converter
High pressure air pipe
12.7mm
Connected via
copper tube with
different
diameters
Liquid pipe
9.5mm
Water tank
High pressure air pipe
9.5mm
Liquid pipe
6.4mm
Cooling water inlet of water tank G1/2
Hot water inlet of water tank
G1/2
Drain outlet of water tank
G1/2

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Notes:
①Conduct thermal insulation for refrigerant copper tube; in order to ensure the using effect, thickness of
thermal insulating material should not be less than 8mm.
②Make sure that the refrigerant copper tube is sealed up without leakage.
5.1.5 Installation Requirements for Water System
（1）Connect cooling water inlet of pressure bearing water tank to tap water pipe, connect
hot water outlet to terminal water using outlet.
（2）Tap water inlet should connect to one-way valve and filter.
（3）For easy maintenance, water inlet and water outlet should be installed with manual
cut-off valve.
（4）Install air release valve in the highest point of water pipe.
5.1.6 Installation Method of Hot Water Converter
Wall-mounted installation:
（1）Install wall-mounted board
Fig. 5.3
Notes:
①Use line aligning method or leveling instrument to find the level position;
②Use screws to fix the wall-mounted board on the wall after being processed (such as be embedded with
plastic particles);
③After installing the board, check if it is firmly installed.
（2）Hang the hot water converter on the wall-mounted board

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Fig.5.4
Notes: After installation, distance from upper side of hot water converter to the ceiling or
related obstacles should be over 60mm, and distance from left side of hot water converter to the
left wall or related obstacles should be over 60mm.
5.1.7 Install Protection for Hot Water Converter
Installing pipeline welding protection for hot water converter is to use magnet to fix the baffle
on the hot water converter to separate the welding pipe and the wall, so as to avoid burning hot
water converter and the wall. Baffle and magnet belongs to fitting materials of hot water converter.
Pipeline welding protection is as below:
Fig. 5.5

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Notes:
①Before the welding, use wet cloth to wrap the thermal insulating bushing;
②Put the baffle between the pipeline and the wall, use two magnets to fix on the case. When welding pipelines
in the side face, the baffle should ward off the cable cross loop to prevent the fire from burning the wall and
the cable cross loop during welding.
5.1.8 Install Water Storage Tank
（1）Thermal insulating water tank should be installed within the range of 10 meters
horizontal distance and 3 meters vertical fall to the hot water converter. The water tank
can be installed outdoors with the converter, such as balcony, roof, ground, or indoors.
（2）Vertical thermal insulating water tank must be placed vertically with the feet grounded;
it is not allowed to hang in the air. The place for installation must be firm enough, and
use screw and bolt to fix the tank on the wall, for details please see below. Take the
bearing capacity of installing position into consideration when installing the water tank.
Fig. 5.6
（3）There should be tap water pipe, hot water interface and floor drain around the thermal
insulating water tank for easily adding water, supplying water and draining water.
（4）Connection of inlet and outlet water pipelines: connect the safety check valve (note that
the arrow “→” points at the thermal insulating water tank) to water inlet of water tank
with PPR pipe, and seal with raw material belt; connect another end of safety check
valve to water adding end of tap water. Connect the hot water pipe to water outlet of
thermal insulating water tank with PPR pipe.

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Fig. 5.7
Notes: In order to ensure water using safety, water inlet and outlet of thermal insulating water tank must
adopt insulating pipeline (such as PPR plastic pipe); make sure that each section of pipe should not be less than
the following length: L≥70×R2, L is the pipe length (Unit: cm), R is inside radius of pipe (Unit: cm). Conduct thermal
insulating measures; it is not allowed to use metal pipe. In the first time using, make sure that the thermal insulating
water tank has been filled with water before energizing the unit; the thermal insulating water tank should not be
operated without water.
5.1.9 Electric Wire Connection Requirement
（1）Layout of Electric Wire
1) The CHV5 Home belongs to I class home appliance, please take reliable grounded
measures. Grounded measure must be connected to special grounded device, and
should be operated by professional personnel.
2) Creepage protection switch and air switch with enough capacity must be installed in
the circuit.
3) The power source must meet the specified specification of power source or special
circuit for air conditioner.
4) Wire diameter of power cord must be large enough; please refer to the specification
in the following chart.
5) Install according to national layout rules.
6) Please do not forcibly draw the power cord.
Model
Type of Power
Source
Minimum Sectional Area of Power Cord (mm2)
Live
Wire
Zero
Line
Ground
Wire
Capacity of Air Switch
(A)
HWC16NK
220V~50Hz
1
1
1
10

Hotwater converter of CHV5HomeInstallationandOperation Manual
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Notes:
①Power cord of unit must be copper core cable, and working temperature should not be over its specified
value.
②If the length of power cord is over 15 meters, please increase the sectional area of power cord accordingly to
avoid overload.
③Specification of power cord means the specification selected when BV single core wire (2~4 pieces)
penetrating plastic tube under the ambient temperature of 40℃. Operate the air switch when ambient
temperature is 40℃and the air switch is type “D”.
④If the actual installation condition is changed, please consider to reduce the capacity of power cord and switch
provided by the manufacturer.
（2）Electric Wiring and Connection
1) Twist off the screw on the wiring box cover of the hot water converter, and then open
the wiring box cover.
2) Connect one end of auxiliary electric heating power cord equipped on the water tank
to wiring board 1, connect black end to 1, blue end to 2 and yellow-green end to the
ground. The control output terminals of back water pump are terminal 3 and terminal
4 of power wiring board. Connect the coil of control contactor of water pump to this
position.
3) Smear some heat-conducting silica gel on the water temperature sensor led out from
the hot water converter. Insert the upper water temperature sensor into the upper
temperature-sensing outlet 1 of water tank; insert the lower water temperature
sensor into the upper temperature-sensing outlet 2 of water tank.
4) Fix the heavy-current wire with wire-fixing clamp and then reinstall the wiring box
cover.
5) Install and fix the wired controller, and then connect the wired controller with the
communication wire led from the hot water converter.
6) Please note that the heavy current and weak current should be separated.

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Fig. 5.8 External wiring diagram between hot water converter and outdoor unit & water tank
Note: Above wiring diagram is only for reference. Please refer to the circuit diagram in the electric box of unit for
details.
5.2 Debugging
Notices for debugging
（1）Check whether the unit is installed correctly.
（2）Check whether the piping for water system and wiring for electricity system is
reasonable.
（3）Check whether the heat preservation for the refrigerant copper pipe is good.
（4）Check whether it connected the earthing wire.
（5）Check whether the voltage is the rated voltage of the unit.
（6）Check whether the check valve and the safety valve at the water inlet are installed
correctly.
（7）The water inlet pressure should be no less than 0.15MPa.

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5.3 Notices
（1）Do not put the unit at the place where will be frozen easily. Otherwise, container and
water pipe will broke and it will cause scalding and water leaking.
（2）Do not operate the unit at the place where the water can’t be drained out. The blow-off
pipe should be connected to the sewer.
（3）The water tank should be installed at the place where is convenient for operation and
maintenance. Moreover, there should be flow drain at the installation place for the
water tank.
（4）The installation position for the water tank should be beyond the children.
（5）The installation position of the water tank should be close to the water-getting point as
much as possible to prevent heat loss.
（6）The installation position for the water tank should be close to the outdoor unit as much
as possible.
（7）The power switch of water heater should be installed at the dry place to avoid normal
operation (you’d better install a water-proof box).
（8）When the temperature is too low in winter or the unit hasn’t been used for a long time,
supply power for the unit at least for 8 hours before turning on the unit.
（9）When the outdoor temperature is too low in winter, do not cut off the power after stop
operation. Otherwise, the freeze prevention protection will be invalid.
（10）When the unit hasn’t been used for a long time, please drain out the water inside the
unit, the water tank and the pipeline through draw off valve after cutting off the power.
（11）Water compensation operation and water drainage operation may be difference for
different models. Please refer to the related installation manual.
（12）Before the water tank is filled up with water, please cut off the power to prevent
malfunction.
（13）Before using water, please adjust the water to the proper temperature to prevent
scalding.
（14）When there’ s enough water for use, please try to decrease the set temperature to
reduce heat loss. Meanwhile, it can also reduce corrosion and scale to prolong the
service life of converter and water tank.

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6 ERROR DISPLAY
When error occurs during system operation, the temperature display zone of the wired
controller will show the error code, and show the error codes in cycle when there are several
errors.
Note: when error occurs, please power off and ask professionals for maintenance.
7 Electric control instruction
Electric principle diagram for HWC16NK

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Note: The above circuit diagram is only for reference. Please refer to the wiring circuit inside the electric box for
the detailed content.
8 Troubleshooting
8.1 Error code for hot water converter
Display code
Content
Display
code
Content
L4
Wired controller power
supply error
d4
Malfunction of entry temperature
sensor
L5
Freeze prevention protection
d6
Malfunction of exit temperature
sensor
L6
Mode shock
dC
Setting of capacity DIP switch is
abnormal
L8
Insufficient power supply
dH
Circuit board of wired controller is
abnormal
dF
Malfunction of upper water
temperature sensor
d2
Malfunction of lower water
temperature sensor
Note:
when there’ s malfunction for the outdoor unit, the unit can generate hot water (start up the hot water
generation function when there’s water inside the water tank).
8.2 Common malfunctions
Malfunction phenomenon
Causes
Troubleshooting
No water
Water is stopped or water
pressure is too low
Check it.
Water pipe is blocked
Valve of water inlet pipe is
not open
No hot water or the water
temperature is not high
Water temperature is set
too low
Set it again
Wired controller is invalid
Contact with local maintenance
center
Heating time is too short
Heat it successively
Hot water volume is not
stable
Tap water pressure is not
stable
check it
Freeze prevention
Water temperature is too
low
Energize the unit or keep the
heating status for 30min above
8.3 After-sales service
The guarantee period for the complete unit is 21 months (started from the purchased date on
the invoice). The unit can be repaired freely within the guarantee period. User can take the
guarantee and invoice to the appointed maintenance center. When the unit has been used for
three years, please contact local maintenance center for door-to-door service (maintenance
should be charged).