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INSTRUCTION MANUAL FOR AIR SOURCE
CIRCULATING HEAT PUMP WATER HEATERModel CCHP17.5II
(220V /60Hz, three phase)
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THIS MANUAL MUST BE READ AND
UNDERSTAND BYA QUALIFIED PERSON OR PERSONS
BEFORE INSTALLATION.
CONTENTS
INotes for Users--------------------------------------------------------02
IIProducts Introduction------------------------------------------------02
IIIPrinciple of Heat Pump----------------------------------------------04
IVOperation Illustration------------------------------------------------05
VInstalling Instruction-------------------------------------------------09
VIDebugging and Running---------------------------------------------13
VIIMaintenance--------------------------------------------------------15
VIIICommon Faults and Debugging-----------------------------------16
IXWarranty services---------------------------------------------------18
XElectrical wiring Diagram--------------------------------------------19
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I. Notes for users
1. Thanks for choosing our heat pump. In order to avoid the damage of facilities, injury of
operators and loss of possession, please read the instruction carefully before installation.
2. Please pay more attentions to our latest products. The models and standards of our
products gradually adjust with the progress of technology.
3. If you have any questions about technology after you read the manual, please inquire the
local agent as soon as possible.
4. Installing warning:
4.1 Please select whether the size of power supply matches with the power of the heat pump,
and more details, please refer to the nameplate or the installation manual.
4.2 Be sure to install the disconnected devices at least 3mm contact opening distance of the
all pole.
4.3 The unit must land on the ground. It is forbidden to use the unit without accessing to the
ground. Do not connect the ground wire to the null wire or to the tap water pipe.
4.4 make sure the dealer install the wires referring to the diagram.
4.5 For the safety, no altering or mending the units privately.
4.6 It may cause burn when the water temperature is over 52. Please mix the hot water with
cold water before using.
4.7 Avoid the damage of unit caused by against the fan, no inserting anything into the units.
4.8 Do not remove fins or panel when you use hot water, in order to avoid accident or running
in bad order.
4.9 Please communicate with us immediately once the units sink into the water, and reuseuntil being checked by professional operator.
4.10 No adjusting the switch, valve, controller inside the units unless professional.
4.11 No adjusting the parameters unless professional.
II. Products introduction:
1. Unit features
New-generation Water Heater
Creatively applying the principle of reverse Carnot cycle, it is the latest generation waterheater after gas water heater, electric water heater and solar water heater.
Widely Usage
It is applying all the year around, without the limitation of weather. The ambient temperature
ranges from -15-55. It can be used for hot water or heating.
Safety and Reliable
Water heating hour is only the transmission process of heat energy of actuating medium in
system to eliminate the potential hazard of electric shock thoroughly without the contact
between electricity and water.
Durable and Stable
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Heat pump life expectancy can reach as many as 10-15 years or above with its main parts
adopting internationally famous brands.
Intelligence
Huge LCD display screen, menu interface; intelligent controlling automatically, everything isunder control. Intelligent defrosting system and reusable operations make it more suitable for
multiple environments and better protect the machine.
Environmental Friendly
No waste heat, no waste water, no waste gas, zero release and none of pollutions, reduce
global greenhouse effect.
2. Air-source heat pump water heater technical performance parameter table:
Model CCHP17.5II
Rated heating capacity(KW) 19
Rated produce hot water capacity (L/h) 408
Rated outlet water temperature() 50 ~ 55
Max outlet water temperature() 60
Electricity
parameter
Rated power (KW) 4.8
Rated Current (A) 8.5
Maximum power (KW) 6.9
Maximum-current(A) 11.8
Refrigerante R22 (kg 2.9
Unit Dimensions (mm) 820 x 820 x 1060
Power Supply 220V ~ 3N/60HZ
Heat exchange
Type Efficient tube heat exchanger
Pipe specification 2DN25
Circle water flow (M3/h) 3.3
Water pressure drop 50KPa
Unit control type Microcomputer central processor (line control)
Fan Form External rotor motor Alloy BladesUnit Control Microcomputer central processor ( line control )
Protection function
High pressure protectionLow pressure protection
Anti-phase/Open phase protectionWater flow switch
Freeze protection
Suit Environment temperature () -10 ~ 43
Unit weightKg 170
Noise dB(A) 65
Standard Test Conditions: Outdoor dry bulb temperature 20wet bulb temperature 15
water inlet temperature 15water outlet temperature 55
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The information above is for reference only, actual size in order to prevail in kind.
III. Principle of Heat Pump
Heat pump system schematic diagram:
Operating Principle
Air heat energy is a new generation hot water equipment, it successfully applies reverse
Carnot principle by using electric energy to drive heat pump to make refrigerant constantly
accomplish the thermodynamic cycle process of evaporation (absorption of the heat energy in
air)-compression-condensation - throttling- evaporation through the components in heat
pump equipment-evaporator, heat pump, condenser and expansion valve to transfer the heat
energy in environment into water and large amounts of free heat energy in air into domestic
water.
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IV. Operating Illustration
1. Operation panel
2. Operation
With the operation panel on power, the buzzer sounding, the monitor display, and its back
light brightening slight, the feel touch keys are locked and be invalid with touching any keys
of it.
2.1 Lock moving
With your fingers touching the "Power" key approximately 3 seconds and removing it until
hearing "beep" sound at the same time seeing the backlight bright, the keypad is unlocked.
There is not a symbol for locking. (Keys will be automatically locked without key operation
about 60 seconds).
2.2 On/off
With your finger touching the "Power" key, if the panel is turned on, it will be shut down; if the
panel is turned off, it will be start work.
LCD display Touch key
Unlock, on/ off
increase, compulsory cooling
Decrease, Compulsory
defrosting
Inquire, parameter setting,
password setting
Timer setting, timercancel, time setting
Locking key displayTimer display,
clock display
Water Temperature,
fault code, parameter
display
Output conditions
Running mode
Water level
Brand display
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2.3 Water tank temperature setting
With your finger touching"" key, "setting temperature" sign begins to glitter and display the
water tank setting temperature, and then using the finger touch the "" key, then the water
tank setting temperature increased.
With your finger touching the "" key, "setting temperature" sign began to glitter and display
the setting temperature of the water tank, and touching the ""key, the setting temperature
decreases. The temperature setting ranges from 20 degrees to 60 degrees (the maximum
temperature can be set to 99 degrees, and you can acquire more details from the functional
test table)
2.4 Timer setting (you can set two time stage to choose the performance of the units)
With your finger touching the "timer" keyentering the way of timer setting.
Adjusting the timing of the first stage:
Adjust timing on "hour", then touch "timer" key again, to adjust the timing on "minute".
Then touch the "timer" key again, to adjust the timing off "hour", and touch the "timer"
key again to adjust the timing off "minute".
Adjusting the timing of the second stage:
After the first stage timer setting, touch the "timer" key, to enter the second stage of the timer
setting. Adjust the timing as the ways above.
Exist the setting after finish all the timer setting. The panel will display the icon of the timer.
Note:
1. If only one timer stage needed, setting the first stage timer according to the
above steps. White for the second stage timer setting, set the same time for timing
on and off.
2. If only setting the time in the first stage and not in the second, it will exist setting
automatically after about 8 seconds.
3. The timer key in the stage 1 and 2 are timing on/off key. While in the 3 and 4
stage, the timer key is for water supply pump. If without water supply pump, this
function is useless. However, during timer on/off setting, must occupy all the 4
stages but no number request on stage 3 and 4.
2.5 The timing cancellation
With your finger touching the "timer" key more than 3 seconds and removing it until hearing
"beep" sound, then the timer is cancelled.
2.6 The clock settings
With your finger touching the "timer" key more than 8 seconds and removing it until hearing "beep"
sound, you enter the clock setting mode. First, adjusting the "hour"; then touching "timer" button,
adjusting the "min"; and touching "timer" button again, completing the setting and exiting the
mode.
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Note: The clock can be set only in the case of timing setting out.
2.7Compulsory defrosting
When the system boots and the press starts, with your fingers touching the "" key more
than 8 seconds, and removing your finger until hearing "beep" sound, then entering
defrosting system. The defrosting will exit until the arrival of plate tube temperature or theend of the defrosting time.
Parameter settings and inquiries
A: Function Query:
Under the state of heat pump running (switch on), with your fingers touch the "setting" key,
the query code by A1 to A9, if it is single-system model, and then finger touch "setting" key to
exist inquire. If it is dual-system model, and then finger touch "setting" button, the query code
by b1 to b9, then finger touch "setting" button to exist. Accordingly stated as follows:
B Function setting
Under the state of heat pump running (switch on), touch setting button over 3 seconds, when youhear beeping, please remove your hand, the system will enter into setting state. After setting the
parameters, your finger touching the Function key, enter the next parameter setting, until all the
parameters having setted.
Cod
e
Meaning( single
system)
Meaning( double
system)Code
Meaning
(double system)
A1 coil pipe temperature coil pipe temperature1 b1 coil pipe temperature2
A2 Return gas temperature Return gas temperature1 b2Return gas
temperature2
A3 Exhaust temperature Exhaust temperature 1 b3 Exhaust temperature 2
A4Environment
temperature
Environment
temperatureb4
Environment
temperature
A5Outlet water
temperature
Outlet water
temperatureb5
Outlet water
temperature
A6Return water
temperature
Return water
temperatureb6
Return water
temperature
A7 00 00 b7 00
A8 Compressor current Compressor current 1 b8 Compressor current 2
A9Expansion valve open
angle
Expansion valve open
angle 1b9
Expansion valve
open angle 2
Cod
e
Parameter name Adjustment
range
Initial value
/
/
Water tank temperature setting 2060 55
L1 bias between tank and display temperature 015 0
L2 bias between compressor start and settemperature
3
18
5
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C Error code and alarm:
Code Double system Single system Household unit
1 Wrong phase Wrong phase
2 lack of phase lack of phase
3 water flow switch water flow switch
4 High Pressure Switch 1 High Pressure Switch High Pressure Switch
5 Low Pressure Switch 1 Low Pressure Switch Low Pressure Switch
6 High Pressure Switch 2
7 Low Pressure Switch 2
8 Communication Communication Communication
9 Limit time Limit time Limit time
10High exhaust
temperature1
High exhaust
temperature
High exhaust
temperature
11High exhaust
temperature2
High exhaust
temperature
High exhaust
temperature
12
Water tank
temperature sensor
broken
Water tank
temperature sensor
broken
Water tank
temperature sensor
broken13 Coil pipe1 temperature Coil pipe1 Coil pipe1
L3 Set outlet water temperature 3599 55
L4 Maximal water tank temperature 3099 60
L5 Environment temperature
allowing electric heater start
035 0no electric
heat
L6 Return water temperature 3065 45
L7 Supplement water temperature 2060 20(no
supplement)
L8 Compressor current 0-48A 0 (no testing)
h1 Defrosting cycle 20-99minuter 50min
h2 Permission temperature for defrosting -151 -3
h3 Defrosting time 5-20min 8min
h4 Defrosting quit temperature 140 15
p1 Electric expansion valve adjust period 20-180 60s
p2 Difference temperature between A1 and A2 -815 0
p3 Permission for exhaust temperature protection 70135 92
p4 Electric expansion valve open
angel when defrosting
6-55degree 32
p5 Minimal electric expansion valve open angel 6-30degree 15
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sensor broken temperature sensor
broken
temperature sensor
broken
14Coil pipe2 temperature
sensor broken
15
Exhaust gas
temperature sensor1
broken
Exhaust gas
temperature sensor
broken
Exhaust gas
temperature sensor
broken
16Exhaust gas
temperature sensor2
17Environment sensor
broken
Environment sensor
broken
Environment sensor
broken
18Return water sensor
broken
Return water sensor
broken
19 Input water sensor
20Water level switch
broken
Water level switch
broken
21 High input temperature
22Outlet water sensor1
broken
Outlet water sensor1
broken
23 Outlet water sensor2broken
24Return gas sensor1
broken
Return gas sensor
broken
25Return gas sensor2
broken
26Water pressure sensor
broken
Water pressure
sensor broken
27Low cooling water
temperature
Low cooling water
temperature
V. Installing Instruction
Specific installation requirements
Specific installation requirements
1. Equipment production base
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1.1 Concrete foundation
The base is made of concrete, good at shockproof, specific requirements:
The surface of concrete base should be solid and smooth, load-bearing of support surface
should be 2 times of the operation weight of the unit.
When make concrete base, suggested the following treatment: place on the twisted steel
which the diameter 9.5 mm, tie up with 10cm spacing and display upper and lower.
When do concrete base on the concrete floor, the surface must be kept rough before
construction, after cleaning up and supply enough water before constructing.
The base station mixed by concrete with ratio of 1:2:4, to be solid, and buried the
prescriptive size and quantity anchor bolt according the demand. The finished base should be
kept smoothly.
Concrete base station surface required waterproof treatment, drains shall be installed
around and the slope should be larger than 0.5, the slope toward to the drain outlet.
Concrete must be dry completely before installing the machines.
In order to enable the device quietly operating, to avoid vibration and noise impact the floor,
between the concrete base and machine base need be isolated by shockproof pad, and keep
horizontal.
To avoid tortility and rupture of the machines because of the displacement by long-running
of the machine, The unit should take appropriate measures to limit fixed.
Attention:
a.) Concrete base's height from the ground should be more than 100mm
b.) Concrete base's overall height more then 200mm
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c.) Concrete base must be level, the level is 0.1%
1.2. Jointing the support frame with channel steal, flange beam and angel iron,
the support frame and the ground be fixed with screws.
Note: Load support surface must be strong enough to withstand the load of unit movement,
and without additional increases vibration and noise, to avoid affecting the surrounding
environment
2. Installing Notes:
The place which is appropriate for installation is flexible, such as balcony, floor, basement and
so on. In order to run reliably, you must take notes of these points:
The unit should be installed by specialized personnel, and the installation requires to comply
with the corresponding regulation of local government and relevant departments.
Reserve enough space to connect water pipe and wire, consider the room for repair.
After installation, check whether the unit is fixed well, whether base angle is installed with
shockproof pad.
Unit should be installed outdoor in well ventilated place, but also ease of maintenance, the
distance between shelter at the outlet wind direction and the host ought to be no less than 1.8
meters. Shown as follow:
3. Installation system of heat pump water heater unit may be applied in many
different forms, shown as below
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water pump
350mm
suppling hot water
hot water backwater
hot water tank
complement running watercomplementarywater pump
water pumpcirculating
spare electric heating
supplying pumphot water
sensor in the pipe
Heat Pump Unit
put temperature
RemarkThe demand of accessories in the datted line depend on the fact of project .
complementary heater in pipe
solenpid
side valve
filterback-flou blockage valve
manometerthermometer
soft connecter
4. Power of inspection equipment
4.1 Before installation capacity must be check the power supply, power lines, and electrical
switch specification to ensure compliance with the requirements of safe operation.
4.2 Unit power from independent power control switch (with leakage production) connected
the power department, to ensure power supply unit meet the requirements.
5. Install water level switch
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Remarks: the water level switch height can be based on user needs, self-regulation by the
installer.
VI. Debugging and Running
1. The preparatory work before the trial operation
1.1 Heat pump hot water units inspection
Check whether the appearance of units or the machine pipeline system is damaged during
transportation.
Check whether there is air inside the unit water, if any, should emitting it using the exhaust
valve in the units or on the pump.
Check whether the fan blades interfere to the its fixed plate or its protecting network.
1.2Checking Distribution System
Check whether the power supply complies with the manual or the unit nameplate required.
Check whether all the power and control circuits connect absolutely; The wires connects
correctly according to the diagram; and whether grounding reliably, or all terminals solid.
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1.3Checking piping system
Checking whether the piping system, filling pipes, backwater pipes pressure gauge,
thermograph, valves, level switches and other equipment is installed correctly.
Checking whether the valves needed opening are open, and those needed closed close.
Checking whether piping system keeps warm.
2. Testing running
Units operation must be professional to operate.
Conduct an overall testing running, until a comprehensive inspection in entire system
meeting the requirements,
Connecting with the power and starting the heat pump, the main machine starts after 3
minutes later. For the three-phase power supply units, checking whether the fan and the
pump install correctly.
Checking whether the unit meets the requirements, if does ,it can be put into normal use
after running for a time (usually 3 days) after having been put into normal use.
3. Normal performance
Heating running processes: power-on----unit water pump running---- water switch
testing----fan running----compressor running while the low level switch disconnects,
replenishment solenoid valve turns on.
Running control
Water level controlling
With the low water level switch disconnecting, the supply water solenoid is open and
complements water, and the pump supplying water stops at the same time; Only with the
high water level connecting, the pump supplying is open and after 2 minutes, the solenoid for
complementing water closes.(replenishment open or not for 2 minutes at least).
The water pump does not supply water, if the high water level disconnect and the water
temperature in the tank is lower than set temperature (-5)it supplies water , when high
water level connects after the replenishment valve close 2 minutes and the tank water
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temperature is higher than set temperature(-2). When the supply pump stops, whatever
conditions the host is in, the tank must be filled of water. (Replenishment open or not for 2
minutes at least).
Circulating pumps, compressors, and fans start to run unless the low water level switch
connects, when the power is on for the first time.
With unit running, the circulating pump is open ; While host stopping, it stops running after
30 seconds later.
When water supply pump turns on, backwater solenoid works simultaneouslyand inspect
the backwater temperature 10 minutes later. When the backwater temperature is higher than
the set temperature of 5, the backwater solenoid will stop. When it is lower than set the
temperature of 10, the backwater valve is open to keep hot water for a long time in the
supply water pipe. When water supply pump turns off, backwater solenoid stops working at
the same time.
The 4-ways valve is at the state of power-off while running normally, power-on for working
unless defrosting.
VII. Maintenance
The heat pump is a more automatic equipment needing inspection regularly. If the
maintenance is long-term and effective, the operation reliability and the service life
will have an unexpected increase.
1. Clearing the water filter regularly to ensure the pure water and avoiding the damage
caused by its blocking.
2. No adjusting any security protection setting on your own, for that has completed before
leaving the factory.
3. Always checking whether the power unit and electrical system wiring is solid, and there are
abnormal movements between electrical components. If does, timely maintenance and
replacement.
4. Always checking whether the water supply o f water, the tank valve, liquid level controllers
and exhaust device are working properly, so as to avoid causing air into the system reduced
the water cycle to affecting the heat capacity of units and the reliability of its running.
5. Checking whether the water pump or water valve working properly, water pipeline or pipe
fittings leaking more often.
6. Keeping units in the clean, dry and well-ventilated environment, also regular cleaning (1-2
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months) of side air-heat exchanger for the good effect.
7. Checking whether the components of units working properly, pneumatic pipe fittings
existing oil, and refrigerant leaking more often.
8. No putting odds around units in order to avoid blocking draft exit.
9. Letting go the water, cutting off the power and setting a good protective cover, if the
downtime is longer. A comprehensive inspection is necessary to conduct the units again.
10. Please connecting with the local special maintenance department of our company for the
repairs in time if you have no ways to the failures.
11. The condenser cleaning
Starting the circulating pump of units to clean the condenser for 3 hours by the hot phosphoric
acid of 50 to 60 , whose concentration is 15%, and finally washing it 3 times with tap
water. (Pipe installation proposes to set aside 3 interfaces, with the wire plug to seal an
interface, to prepare to take over cleaning).No using corrosive fluid to clean the condenser.
12. Clearing the tank after a period of time (typically for two months, according to the local
water quality) for removing the water scale.
VIII. Common Faults and debugging
If there are problems with the units during their performance, please connect with
the dealer, and the following table can be referred to.
Fault conditionThe possible cause of the
malfunctionTreatment measures
Unit not
operating
Power failure
Unit power cable loose Control Power Fuse Unit
Disconnect the power
switch, check the powersupply
Pinpoint the cause and fix
Replacement fuse
Water
pump
operation but
water not
circulating or
water pump
noise Too
Water systems water Water systems with air
The end of all water
system valves to
open Dirty water filter
Plugging Large
Inspection system
replenishment device, to
the system replenishment
Exclude water systems in
the air water system valve
open enough to
Cleaning water filters
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IX. Warranty services
1. Warranty certificate: the unit failure during the warranty period, users are required for the
purchase invoice and warranty card for warranty, and the repair product's number must be
same with the product number on the warranty card. If no invoice or warranty card, it is
considered beyond the warranty period. Out of warranty products do not enjoy free
warranty service, but the company can provide users with paid services.
2. Damage caused by the following reasons will not be covered under free warranty:
A. Damage caused in user installation, move and repair.
B. Damaged caused in user transport, improper storage, or failure to use and maintenance
according to instructions.
C. Power supply does not meet the requirements of AC22010%V/50HZ,
AC38010%V/50HZ, and natural disasters caused the failure
D. Due to outdoor heat exchanger and water system not clean and irregular cleaning heat
exchangers, filters, etc.
E. The filter of cold water fill pipe and host inlet pipe are not installed correctly
F. Serious beyond the water production capacity of the device, forced to run the machine
caused the failure
G. The number of products to repair does not match warranty card Product number.
H. Warranty card altered
I. No warranty card and purchase invoicesJ. Products beyond the warranty period
X. Electrical wiring diagram Single-system electrical wiring diagram
Water flow is not
enough
Check water systems,
increased water flow
Suction
pressure is too
low
Dry filter plugging
solenoid valve to open
at the end
Big buck through the
heat exchanger
Replace the filter drier
Repair or replace the
solenoid valve
Check thermal expansion
valve opening degree of
appropriateness
Compressor oil
loss Insufficient lubrication Adding oil
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