Cooper & Hunter CH-HP3.5SWNK User manual

Owner's Manual
Models:
CH-HP3.5SWNK
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 air source water heater adopts DC inverter compressor, which is with
Standard, Save, Rapid and other kinds of operation modes. In order to save the
energy as much as possible, you are suggested to use the “Save” mode during daily
operation.
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...................................................... 20
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 Rainproof Box Installation .........................................................................................26
11 Commissioning ..............................................................................28
12 Methods for Replenishing or Discharging Refrigerants............ 30
12.1 Refrigerant Replenishment........................................................................................30
12.2 Refrigerant Discharging.............................................................................................30
13 Method for Refrigerant Reclamation............................................31
14 Performance of the Unit ................................................................32

14.1 Heating Capacity.......................................................................................................32
14.2 Operating Performance.............................................................................................33
15 Notes on Winter Use......................................................................34
16 Servicing and Maintenance...........................................................35
16.1 Water Replenishment for the Water Tank..................................................................35
16.2 Regular Cleaning for the Water Tank ........................................................................35
16.3 Mg-Stick Replacement..............................................................................................36
16.4 Safety Check Valve Maintenance..............................................................................37
16.5 Maintenance of the Unit ............................................................................................37
17 Precautions for Safety Use........................................................... 38
18 Troubleshooting............................................................................. 39

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
contact GREE 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
2
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 the GREE 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
3
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.
This marking indicates that
this product should not be
disposed with other
household wastes throughout
the EU. To prevent possible
harm to the environment or
human health from
uncontrolled waste disposal,
recycle it possibly to promote
the sustainable reuse of
material resources. To return
you used device, please use
the return and collection
systems or contact the
retailer where the product was
purchased. They can take this
product for environmental safe
recycling.
This unit contains
fluorinated gas with
greenhouse effect covered by
the Kyoto Protocol.
Maintenance and disposal
must be carried out by
qualified persons only.
Refrigerant gas R410A,
GWP=2100.
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
4
2 Models and Technical Specifications
The air source water heater consists of an outdoor unit, a water tank, wired
controller, refrigerant pipes, and water pipes. 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-HP3.5SWNK
WT200SW1.5ENK

Air Source Heat Pump Water Heater
5
During the installation, please comply with the model mapping in the preceding
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-HP3.5SWNK
Rated Heating Capacity(*)
W
3500(1800～4000)
Rated Input Power(*)
W
850(360～1333)
COP(*)
W/W
4.10
Load Profile
-
L
COPDHW(**)
W/W
3.17
Energy Efficiency Class(2)
-
A
Water Heating Energy Efficiency(2)
-
129%
Annual electricity consumption
(average climate conditions)
kW h
795
Maximum Input Power
W
1500+1500W (Electric Heater)
Outlet Water Temperature
° C
Default: 55° C , 35° C ~55° C
Power Supply
-
220V-240V ~50Hz
Insulation Level
-
Ⅰ
Protection of Ingression
-
ⅠPX4
Refrigerant
Name
R410A
Charge
kg
1.40
Outline Dimensions
W x D x H
mm
842×320×591
Package Dimensions
W x D x H
mm
941×371×660
Gross/Net Weight
kg
44.5/38.5
Sound Power Level(***)
dB(A)
63
Operating Range
° C
-25~45° C
Notes:
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(**) Value obtained with an air temperature of 7° C and a water inlet at 10℃,
as per EN16147, (EU) No 814/2013.

Air Source Heat Pump Water Heater
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③(***) Value obtained as per EN 12102-2008.
④Under Rapid function, electric heater helps to heating water.
Please always see the nameplate for the exact data as this table is subject to
change.
Table 2-3 Water Tank Model and Specification
Model
WT200SW1.5ENK
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
60/52
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.
Table 2-3 Performance Data of Hot water Mode
T e （℃）
Mode
inlet water T1
（℃）
outlet water T2
（℃）
capability
(kW)
COP
(W/W)
45
Hot water
29
55
2.90
7.80
20
15
55
3.50
4.10
7
10
55
1.80
3.80
0
10
55
1.90
2.30
-7
10
55
2.40
2.20
-15
10
55
1.90
1.80
-20
10
55
1.40
1.50