Cooper & Hunter CH-HP3.0SWHK User manual

Owner's Manual
Models:
CH-HP3.0SWHK
Thank you for choosing Air Source Heat Pump Water Heater, 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 or send email to
[e-mail] or electronic version.
C&H reserves the right to interpret this manual which will be subject to any change due to product
improvement without further notice.
Air Source Heat Pump Water
Heater

User Notice
Thanks for purchasing the C&H air source heat pump water heater. In order to
make the best use of this unit, prior to installation and operation, please read this
manual carefully, pay attention to the operation and maintenance instructions
provided in this manual, and keep it properly for future reference. The air source
heat pump water heater shall be installed and maintained by skilled personnel, as it
is an appliance that may be damaged or cause hazards when improperly installed
and maintained. Please contact the appointed local service center for installation
and maintenance, and strictly observe instructions in this manual. C&H reserves
the rights to interpret this manual which will be subject to any change without prior
notice.
The air source heat pump water heater is thermal storage water heater. When
using water, please open the cold water valve first, and then adjust the cold and
hot water volumes to a proper temperature to prevent scald. When you do not use
the heater for a short period in cold seasons, ensure that this unit is energized all
day long. When you do not use it for a long period, ensure that its water system is
drained to prevent cracking caused by cold weather. For any problem, please
contact the sales representative or the service center that can provide professional
services, including inspection, water drainage, water charging, and cleaning.
This manual serves as installation and use guides for vertical coil type air
source water heaters. For details about how to use the wired controller, refer to
the wired controller guide delivered with the unit.

Contents
1 Precautions for Use..............................................................................1
2 Models and Technical Specifications ...................................................4
3 Working Principles and Advantages ....................................................7
3.1 Schematic Diagram of the Air Source Water Heater......................................................7
3.2 Brief Introduction to Principles.......................................................................................7
3.3 Advantages...................................................................................................................8
4 Installation Precautions......................................................................10
4.1 Importance Notes........................................................................................................10
4.2 Basic Requirements for Installation Sites ....................................................................10
5 Main Unit Installation.......................................................................... 11
5.1 Location for Installing the Main Unit.............................................................................11
5.2 Space Requirement for Main Unit Installation and Installation Diagram .......................11
6 Installation of the Water Tank.............................................................13
7 Pipeline Connection...........................................................................14
7.1 Refrigerant Pipe Connection.......................................................................................14
7.2 Exhaust Methods ........................................................................................................15
7.3 Water Pipe Connection...............................................................................................17
8 Installation Diagram of the Unit.......................................................... 19
9 Wiring .................................................................................................21
9.1 Wire Layout.................................................................................................................21
9.2 Wire Connections........................................................................................................22
10 Wired Controller Installation.............................................................24
10.1 Requirements for Wired Controller Installation Locations ..........................................24
10.2 Wired Controller Installation ......................................................................................24
10.3 Weatherproof Box Installation ...................................................................................25
11 Commissioning.................................................................................27
12 Methods for Replenishing or Discharging Refrigerants...................29
12.1 Refrigerant Replenishment........................................................................................29
12.2 Refrigerant Discharging.............................................................................................29
13 Method for Refrigerant Reclamation................................................30
14 Performance of the Unit...................................................................31

14.1 Heating Capacity.......................................................................................................31
14.2 Operating Performance.............................................................................................31
15 Notes on Winter Use........................................................................33
16 Servicing and Maintenance..............................................................34
16.1 Water Replenishment for the Water Tank..................................................................34
16.2 Regular Cleaning for the Water Tank ........................................................................34
16.3 Mg-Stick Replacement..............................................................................................35
16.4 Safety Check Valve Maintenance..............................................................................36
16.5 Maintenance of the Unit ............................................................................................36
17 Precautions for Safety Use.............................................................. 37
18 Troubleshooting................................................................................38

Air Source Heat Pump Water Heater
1
1 Precautions for Use
indicates the prohibited operations. indicates instructions that must be
followed. indicates instructions to which special attentions must be paid.
Before you use this product, please read the following instructions carefully:
Caution
For any exceptions such
as burning smells, please
cut off the power supply and
then contactC&H
authorized maintenance
center.
If an exception persists, the
air source water heater may
be damaged, which may
even cause an electric shock
hazard or cause a fire.
Do not operate the water
heater with wet hand.
Otherwise, an electric shock
hazard may be caused.
Before installation,
check whether the
voltage of the local
power grid
accords with the
voltage on nameplate
of the unit, and
capacity of the power
supply, power cord or
socket is suitable for
input power of this unit.
Dedicated lines must be
used for the power supply
to prevent a fire.
Do not use multipurpose
sockets or mobile wiring
boards to connect wires.
Otherwise, overheating or
even a fire may be caused.
Pull out the power plug
and drain the main unit
and water tank when water
heater is not in use for a long
time to prevent cracking
caused by cold weather.
Do not
damage wires or use
undesignated wires.
Otherwise,
overheating or a fire
may be caused.
Before cleaning, please
cut off the power supply.
Otherwise, an electric
shock hazard may be
caused.
Use dedicated circuits with
a leakage circuit breaker
protection for the power
supply and ensure sufficient
capacity.
Otherwise, overheating, a
fire, or an electric shock
hazard may be caused.
Do not change the
power cord or
socket without any
consent. Wiring tasks
must be completed by
qualified electricians.
Ensure proper
grounding for the
metal part of the unit,
and do not change
the grounding mode.

Air Source Heat Pump Water Heater
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The unit must be
securely grounded! The
grounding wire must be
connected to a dedicated
apparatus of the building.
I f the unit is not grounded,
contact qualified personnel
for installation. Do not
connect the ground cable
to the gas pipe, water pipe,
drainage pipe, or any other
places considered
improper by professional
personnel.
Do not put any foreign
matter into the unit.
Otherwise, the unit may be
damaged or cause
hazards. Do not put your
hands into the air outlet of
the main unit. Otherwise,
hazards may be caused.
Do not repair the
unit by yourself.
Improper repair may
cause an electric
shock hazard or a fire.
For repair services,
contact theC&H
appointed service
center.
Do not stand on the main
unit or water tank, or place
any object on it.
Otherwise, the main unit
or water tank may be
deformed or damaged, or
even hazards may be
posed when a person or
object falls off.
To save energy more
efficiently, install the main
unit at a well-ventilated
place. Do not block the air
inlet or outlet of the main unit.
Otherwise, energy efficiency
may be reduced, and
shutdown or even a fire may
be caused.
Keep chemical
sprays, gas tanks at
least 1 meter away
from the main unit.
Otherwise, fire
hazards or explosions
may be caused.
Check whether the base
of the main unit is
damaged.
If the base is damaged and
not fixed, the unit may fall
off, causing hazards.
To improve durability of
the water tank, a Mg-Stick
is installed inside the water
tank. The Mg-Stick has a
lifespan of two to three years,
and must be replaced by
professional maintenance
personnel if a replacement is
required.
When the water
tank has no water or
not full filled, do not
power on the unit.
Otherwise, the unit
may be damaged or a
fire may be caused.

Air Source Heat Pump Water Heater
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Open the safety check
valve handle on a regular
(about one month) basis to
check whether it is blocked.
Perform sewage disposal
by following the guide on a
regular (about once a year)
basis.
It is normal that the safety
check valve drips.
The pressure relief
opening of the safety
check valve must be
connected to one end
of a securely fixed
guide hose, and the
other end is
connected to the floor
drain. Ensure that the
guide hose is not
twisted or folded.
The installation direction
of the safety check valve
must be correct; that is, the
direction indicated by the
arrow on the safety check
valve must be the same as
the flow direction of
cold water.
You are advised to install
the filter horizontally after the
main shutoff valve of the
user's water pipe. Ensure
that the direction indicated by
the arrow on the filter must
be the same as the water
flow. If impurities inside
the waterway need to be
cleared, open the end cap of
the filter.
When the filter is
installed vertically, the
direction indicated by
the arrow must not be
upward and the end
cap must be placed
slantwise downwards.
The fuse model and
rated value are in
accordance with the
corresponding controller or
the silk screen attached on
the protective tube.

Air Source Heat Pump Water Heater
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2 Models and Technical Specifications
The air source water heater consists of an outdoor unit, a water tank, wired
controller, a refrigerant pipe, and a water pipe. It provides hot water to users for
household use.
The appearance of the main parts is shown in Figure 2-1. Actually, the
appearance of the product may not be exactly the same as that shown in the figure.
For the actual appearance, refer to the product delivered.
Outdoor unit Wired controller
Water tank
Figure 2-1 Appearance of the main parts
This installation guide provides guidance on installation of the following model.
Table 2-1 Mapping between the main unit and the water tank
Outdoor unit model
Water tank model
CH-HP3.0SWHK
WT200SW1.5EHK
During the installation, please comply with the model mapping in the preceding

Air Source Heat Pump Water Heater
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table. Otherwise, a fault may occur because the main unit mismatches the
exchanger capacity of the water tank.
Table 2-2 Unit Model and Specification
Model
CH-HP3.0SWHK
Rated Heating Capacity(1)
W
2800
Rated Input Power(1)
W
700
Load Profile
-
L
COP(2)
W/W
2.90
Energy Efficiency Class(2)
-
A
Water Heating Energy Efficiency(2)
-
110%
Maximum Input Power
W
1180+1500W (Electric Heater)
Outlet Water Temperature
°C
CDefault: 55°C, 35° ~70°C
Power Supply
-
220V-240V ~50Hz
Insulation Level
-
I
Protection of Ingression
-
IPX4
Refrigerant
Name
R134a
Charge
kg
1.20
Outline Dimensions
W x D x H
mm
848×320×540
Package Dimensions
W x D x H
mm
881×363×595
Gross/Net Weight
kg
See the nameplate
Sound Power Level(3)
dB(A)
61
Operating Range
°C
-15~45°C
Notes:
①(1) Value obtained with the following conditions: Outdoor
temperature: 20°C DB/15°C WB; Water tank temperature (start/end): 15°C
/55°C .
②(2) Value obtained with an air temperature of 7°C and a water inlet at

Air Source Heat Pump Water Heater
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10℃, as per EN16147, (EU) No 814/2013.
③(3) Value obtained as per EN 12102-2008.
④Under fast water heating mode, electric heater helps to
heating water.
⑤Please always see the nameplate for the exact data as this table is
subject to change.
Table 2-3 Water Tank Model and Specification
Model
WT200SW1.5EHK
Capacity
L
185
Power Supply for Electric Heater
-
220V-240V~50Hz
Input Power for Electric Heater
W
1500
Outline Dimensions(W x D x H)
mm
545 x 545 x 1919
Package Dimensions(W x D x H)
mm
2009 x 656 x 625
Water Tank Gross/Net Weight
kg
See the nameplate
Outer Size of Connection Pipe
mm
Φ6, Φ9.52
Notes: Please always see the nameplate for the exact data as this table is subject to
change.

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3 Working Principles and Advantages
3.1 Schematic Diagram of the Air Source Water
Heater
Figure 3-1 Schematic diagram of the air source water heater
3.2 Brief Introduction to Principles
The air source water heater unit is designed based on the heat pump principles.
It consumes a part of electric energy as a supplement, and by using the
thermodynamic cycle, absorbs heat from the low-grade energy (air source)
environment, and transfers the heat to a condenser through a compressor, and
releases it to the water inside the water tank. In this way, the water is heated up.
The working principles of an air source water heater are the same as those of a
heat pump air conditioner. A heat pump air conditioner absorbs heat from the natural
environment and transfers it to the indoor air; however, the air source water heater
uses the absorbed heat to heat up domestic water. The air source water heater is a
novel, efficient, energy-saving, and environment-friendly heater product.

Air Source Heat Pump Water Heater
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3.3 Advantages
Efficient and Energy-Saving
The outdoor unit of this product adopts an electronic expansion valve for
adaptive control. It automatically adjusts its opening size based on the unit operating
conditions, and uses the heat in the air to heat up domestic water, so that the unit
always runs at optimal performance as well as ensuring reliability. The water tank
adopts an externally wrapped microchannel heat exchanger, and is in planar
contact with the inner container, which features higher efficiency in heat exchange
and a high pressure-bearing capability. Effective thermally-conductive materials are
used between the microchannel heat exchanger and the inner container of the water
tank to enhance heat transfer.
In testing conditions of the unit, the coefficient of performance (COP) reaches
up to 2.9, and the operating costs are more economical than conventional heaters.
Reliability and Durability
The unit adopts a dedicated compressor, which can withstand high temperature
and high pressure. The water tank adopts a stainless steel inner container made
based advanced technologies and is equipped with a long-lifespan Mg-Stick to
prevent corruption. The entire unit has multi-level protection to ensure durable and
reliable use.
Environment-Friendly and Safe
The unit uses the environment-friendly R134a refrigerant, which has no
atmospheric pollution and has no potential safety hazards such as monoxide
poisoning to for safety purposes.
Simple and Convenient Installation
The installation is not subject to any environmental limitation. The unit can be
installed in the kitchen, bathroom, balcony, garage, storage room, or basement
according to actual living conditions, and requires no special care. It applies to
places such as household use and villa suites. It is a no-loop waterway system, and
can be easily and conveniently installed.
Luxury Configurations:
The unit is equipped with a high-end ultra-thin touch-wired controller, which
provides four heating modes: hot water, saving, preset, and night modes. The unit
provides a proper water temperature range from 35°C to 70°C. It provides functions
such as fast heating, timer switch, and "i-KNOW."

Air Source Heat Pump Water Heater
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Intelligent Defrosting
The unit provides the antifreeze and automatic defrosting functions, which
effectively solve the problems such as heat exchanger freezing, frosting, and
sewage caused by defrosting.
Intelligent Water Return
The unit has the intelligent water return function (water return system
required), which allows users to always use hot water as long as the water tank has
hot water in the case of multi-point water use or a long water pipe. This avoids
a waste of cold water.
High Water Temperature
The heat pump can heat up water to a maximum temperature of 70°C. The
high-temperature hot water is more hygienic and can be used for various users for
various purposes.
All-Weather Applicable
Supplies hot water all year round regardless of nights or rainy weather.

Air Source Heat Pump Water Heater
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4 Installation Precautions
4.1 Importance Notes
(1) The air source water heater must be installed by professional personnel
by abiding by the national wiring code and following the instructions in this guide.
(2) For installation or migration of the air source water heater, please contact
your local service centers authorized by C&H. In the case of an air source water
heater installed by any party not authorized or designated by C&H,Cooper&Hunter
shall not undertake any responsibility for any fault or problems caused the air
source water heater.
(3) If the user installs the air source water heater using self-prepared
installation materials, C&H shall not undertake any responsibility for any loss caused
by improper running and use of the air source water heater due to pipe leakage,
fall-off, or insecure installation.
(4) The quality of water heated by the air source water heater meets the local
drinking water health standards. If well water, groundwater, and seawater are used,
the depletion of the Mg-Stick in the water tank may be accelerated, thereby
shortening the lifespan of the unit.
(5) The water processed by the ion exchange water softener accelerates the
depletion of the Mg-Stick in the water tank. Therefore, you are advised not to
connect the water inlet of the air source water heater to a water softener .
4.2 Basic Requirements for Installation Sites
The following sites for installing the air source water heater may be prune to
become faulty. If the following sites cannot be avoided, please consult your local
service centers authorized by C&H to customize special models.
(1) Environments that are exposed to strong heat sources, steam, flammable
gases, or volatile substances.
(2) Places where there are high-frequency facilities, such as welding
machines or medical equipment.
(3) Seaside saline areas.
(4) Places where the air contains oil (such as machine oil).
(5) Places where the air contains sulfide gases (such as sulfide hot springs).

Air Source Heat Pump Water Heater
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(6) Other special environments.
5 Main Unit Installation
5.1 Location for Installing the Main Unit
The main unit must be installed at a location where:
(1) The noise and air flow generated by the air outlet do not affect neighbors,
animals, and plants.
(2) Good ventilation of the main unit can be ensured, and there are no obstructions
nearby that hinders the air intake or output of the unit
(3) The installation position is able to withstand the weight and vibration of the main
unit, and the installation can be safely performed.
(4) The place is dry and not exposed to direct sunlight or strong winds.
(5) The installation dimension diagram of the main unit can be complied with, and it
is convenient to maintain and check the unit.
(6) The main unit is out of the reach of children.
(7) It does not hinder public aisle or affect city appearance.
5.2 Space Requirement for Main Unit Installation and
Installation Diagram
(1) The installation requirements of the water heater's main unit are the same
as those of the outdoor unit of an air conditioner. The main unit can be installed in
the exterior walls, roof, balcony, or ground. The air outlet should avoid the wind
direction. The dimension diagram of the main unit structure is shown in Figure 5-1
(unit: mm).
(2) The distance between the main unit and the walls or other obstructions
must not be too small, and the space for installing the main units must meet the
requirements provided in Figure 5-2.
(3) If a canopy is to be installed for the water heater main unit, note that the
heat dissipation and absorption should not be affected.
(4) The main unit must be installed in the host places a solid foundation, and
ensure that the main unit is installed upright, and fastened with foundation bolts. If
the vibration is strong, add rubber gaskets to prevent vibration.

Air Source Heat Pump Water Heater
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(5) Condensate drain of the outdoor unit: buckle snap the drainage joint of
the outdoor unit into the drainage hole located in the middle of the chassis, as shown
in Figure 5-3, and ensure reliable and tight fitting. Then, connect the drainage pipe to
the drainage mouth, and guide the drainage pipe to a proper place for drain.
Figure 5-1 Dimension diagram of the main unit structure
Distance from obstructions
≥50 cm
Distance
from the wall
Air outlet side
Air inlet side
Distance
from the wall ≥50 cm
≥30 cm
≥30 cm
≥200 cm
Outdoor unit chassis
Outdoor unit drainage joint
Figure 5-2 Space requirements for installation Figure 5-3 Drainage pipe connection

Air Source Heat Pump Water Heater
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6 Installation of the Water Tank
(1) The water tank can be installed outdoors with the main unit, for example,
installed in the balcony, roof, or ground. It can also be installed inside the room. Try
to install it in an environment where the temperature is higher than 0°C. The
hot water outlet should not be too far away from the locations for use. Lay out the
pipes in a centralized manner, and take thermal insulation measures on hot water
piping to reduce heat loss.
(2) The water tank must be placed upright with all feet touching the ground. It
must be installed on a solid foundation. During water tank installation, consider
the weight bearing capability of the foundation. Figure 6-1 shows the installation
diagram.
Figure 6-1 Fastening of the water tank
Note: The water tank must also be fastened to the wall using a tank mounting
hoop or plate to prevent fall-off the water tank due to exceptions.
(3) There should be water pipes, hot water interfaces, and floor drains to
facilitate water replenishment for the water tank, hot water supply, and drainage.

Air Source Heat Pump Water Heater
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7 Pipeline Connection
7.1 Refrigerant Pipe Connection
(1) If the water tank and the main unit need to be connected by punching
through a wall, a hole of Φ 55 mm must be drilled in the wall and the hole should be
inclined toward the exterior wall, as shown in Figure 7-1. Protective sleeves need to
be put on both sides of the hole.
(2) Bind up the connecting pipes, power cable, water temperature sensing
package, and communication lines (if necessary) of the wired controller with thermal
insulation bands, and then lead them through the hole.
(3) Remove the refrigerant pipe joint from the water tank and the sealing nuts
from the small and large valves of the outdoor unit, and add refrigerant oil on the
joint and valve cones.
(4) Remove the sealing caps of the connecting pipe. Align the center of the
bell mouth with the pipe joint and valve cone, and screw up the conical nut with your
hand and then with a wrench, as shown in Figure 7-2.
Indoor
Wall Protective sleeve
through the wall
Outdoor
Figure 7-1 Refrigerant connecting pipe through the wall
Conical
nut Designated
pipes
Torque
wrench
Figure 7-2 Fastening the connecting pipe
Caution: Perform pipe layout and bending carefully. Do not damage
connecting pipes. Do not screw up the nut too tight to damage to the nut, its corners,

Air Source Heat Pump Water Heater
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or the bell mouth, or too loose to cause leakage. Table 7-1 shows the tightening
torque.
Table 7-1 Recommended tightening torque
Hex nut
Φ 6
Φ 9.52
Tightening torque (N•m)
15-20
31-35
7.2 Exhaust Methods
Table 7-2 Exhaust methods
Length of Connection Pipe
Air Exhaust Method
Refrigerant Charge
Volume
Not greater than 10 m
Use a refrigerant in the
outdoor unit
/
10 to 20 m
Use a vacuum pump
+20g/m
Note: The unit capability and energy efficiency decreases when length of the
connecting pipe increases. Therefore, take thermal insulation measures on the
connecting pipe when it needs to be extended.
(1) Use a refrigerant in the outdoor unit:
①Remove the valve cap and the fluoride injection mouth nut from the
fluid valve and the air valve.
②Use a hex key to slightly unscrew the valve plug of the fluid valve,
and use a screwdriver to jack up the valve core of the air valve. Then, the air is
discharging.
③Discharge the air for about 15 seconds. When there is refrigerant
gas discharged, close the valve core and tighten the fluoride injection mouth
nut.
④Fully open the valve cores of the fluid valve, and the air valve, as
shown in Figure 7-3.
⑤Tighten the valve cap, and then use a leak detector or soapy water
to check whether the pipes for connecting the outdoor unit and the water tank
leak.

Air Source Heat Pump Water Heater
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Fluoride
injection mouth
Screwdriver
Fluid pipe
Fluid valve
Hex key
Air pipe
Air valve
Figure 7-3 Opening the fluid valve and air valve
Pressure gauge
-76cmHg
Low pressure
valve opened
High
pressure
valve
closed
Hoses filled
Fluid valve
Air valve Vacuum
pump
Figure 7-4 Vacuum pump connection diagram
(2) Vacuum pump:
①Connect the filling hose to the fluoride injection mouth of the air
valve. Ensure that the valve cores of the air valve and fluid valve are tightly
closed.
②Connect the joint of the filling hose to the vacuum pump, as shown in
Fig. 7-4.
③Fully open the low pressure valve of the pressure gauge.
④Start the vacuum pump to vacuumize the air for 20 minutes or more,
and ensure that the pressure gauge pointer points to -1.0 x 105 Pa (-76cmHg).
Close the low pressure valve, and stop running the vacuum pump. Wait 2
minutes. If the number indicated by the pressure gauge pointer does not rise,
the vacuumization and piping are successful. If the number indicated by the
pressure gauge pointer rises, it indicates that air is entering the system. In this
case, check the piping for leaks, and vaccumize the air again.
⑤Remove the filling pose from the air valve.