Kaysun COMPAK KHP 15/190 ACS1 User manual

Te c h nica l Ma nu a l
Combo Type Heat Pump Water Heater
COMPAK KHP 35/300 ACS1
Kaysun reserves the right to discontinue or change specification or designs at any time without notices and
without incurring obligations.

Technical Manual
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Content
1. GENERAL INFORMATION ................................................................ 3
1.1 Measurements ................................................................................................................ 3
1.2 External appearance ....................................................................................................... 3
2. COMBO TYPE HEAT PUMP WATER HEATER .................................. 3
2.1 Features .......................................................................................................................... 3
2.2 Refrigerant circuit ............................................................................................................ 5
2.3 Unit structure ................................................................................................................... 7
2.4 Specifications .................................................................................................................. 8
2.5 Dimension ..................................................................................................................... 10
2.6 Performance data.......................................................................................................... 10
2.7 Wiring diagram .............................................................................................................. 14
2.8 Installation ..................................................................................................................... 15
2.9 Water affusion and effusion ........................................................................................... 24
2.10 Trial run ....................................................................................................................... 25
2.11 Maintenance ................................................................................................................ 27
2.12 Trouble shooting.......................................................................................................... 28
2.13 Function ...................................................................................................................... 31
2.14 Operation .................................................................................................................... 37
2.15 Accessories ................................................................................................................. 44
2.16 Resistance characteristic of temperature sensor ........................................................ 45

3
1. General Information
1.1 Measurements
Model
Net/Gross weight (kg)
Dimension (mm, D×H)
Power Supply
COMPAK KHP 35/300 ACS1
145.5/175.5
Ф650×1920
220-240V~, 50Hz, 1Ph
1.2 External appearance
2. Combo Type Heat Pump Water Heater
2.1 Features
² Safety
1. Complete isolation between water and electricity without electric shock problem.
2. No fuel tubes and storage, no potential danger from oil leakage, fire, explosion, and so on.
3. No cross contamination potential, the condenser coil is wrapped around the enamel inner tank.
4. Multi protection: Pressure and temperature relief (PTR) valve, Te mp e ra t ur e cu t off (TCO) and Auto
temperature cut off (ATCO) double high water temperature protection switches.

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² Enamel tank
COMPAK KHP 35/300 ACS1 adopts enamel water tank. Water and metal are completely isolated by
enamel layer, so the inner tank is hardly to be corroded.
² CE&NF certification
² The maximum outlet water temperature: 65.
Water in the tank is heated stably and quickly by the combination of the electric heating and heat pump
heating.
² Automation control
Automatic mode select.
Automatic start-up and shut-down by timing setting.
Automatic weekly disinfect.
Automatic defrost by revising refrigerant cycle to save the extra operation.
² Auto restart
After a sudden power failure, the unit can return to previous operation conditions when powered on again.
² Vocation mode
In vacation mode, the setting target water temperature is 15 as default. On the last day of vacation, unit
will automatically start disinfect function, and automatically reset the target temperature to the last one

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before vacation.
² High efficiency
According to the heat pump principle, the unit absorbs heat from outdoor air and produce hot water.
Coefficient of performance (COP) is up to 3.83(Under the condition A15/12 W15/45).
² Wide operation range
Within the temperature range from -20 to 43, the unit will not be affected by night, cloudy sky, rain
even snow weather.
² Flexible duct installation
25 Pa external static pressure enables air duct up to 10m.
Notes: A+B+C+D≤10m or A+D≤10m or B+C≤10m
2.2 Refrigerant circuit

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² Compressor: PJ250M2C-4FT, R134a rotary compressor, supplied by GMCC.
² Evaporator: copper tube and aluminum fin type heat exchanger.
² EXV: electronic expansion valve, the opening is regulated according to the discharge air temperature
of compressor.
² Condenser: copper tube wrapping around the inner water tank.
² Fan: centrifugal fan with three speeds. The motor is supplied by Welling.
² High Pressure Switch: When the discharge pressure of compressor is 2.76Mpa or higher, the
protection switch will be triggered, and if the discharge pressure is down to 2.07MPa, the protection
switch will be recovered.
² E-heater: SRG-346-3000, located in the mid of tank, 3000W/220VAC.

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2.3 Unit structure
Notes:
1. All the pictures in this manual are for explanation purpose only. They may be slightly different from the heat pump water
heater you purchased (depending on model). Please refer to the real product instead of the picture of this manual.
2. When ordering repair parts please always give the following information:
1) Model, S/N code and product number.
2) Parts name.
Front Cover
Electronic Control Box
Compressor
Display
Cover
Front Decorative Board
(Optional I)
Front Decorative Board
(Basic)
Front Decorative Board
(Optional II)
Cover
(Electric
Heater)
TCO
Electric Heater
ATCO
PTR valve
Water Outlet
Rear Cover
Junction Box
Junction
Box Cover
Top Cover
Air Inlet
Fan Assy
Evaporator
Filter
Air Outlet
Water Inlet
Anode Rod
Drain Pipe
Anode Rod

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2.4 Specifications
Model
COMPAK KHP 35/300 ACS1
Heat source
Heat pump
E-heater
Running ambient temperature
℃
-743
-2043
Output water temperature
℃
Default 55, 3865
Power supply
Ph, V, Hz
1, 220-240~, 50
Storage size
Ltr
280
Water heating
Capacity
kW
3.00
COP
kW/kW
3.83
Max. current
A
18.7
Unit
Dimension (D×H)
mm
Ф650×1,920
Packing (W×H×D)
mm
750×2,150×780
Net/gross weight
kg
145.5/175.5
Sound pressure level
dB(A)
45
Sound power level
dB(A)
57
Refrigerant type/quantity
kg
R134a/1.2
Refrigerant design pressure
MPa
3.0/1.2
Throttling type
Electric expansion valve
System protection
TCO, ATCO, PTR valve, automatic defrosting, over-load
protector, high-pressure protector, etc.
Air flow
m³/h
414/355/312
Compressor
Model
PJ250M2C-4FT
Type
Rotary
Brand
GMCC
Capacity
W
3000/3005
Input
kW
1.000/1.025
Rated current(RLA)
A
4.1/5.0
Locked rotor Amp(LRA)
A
26.5
Thermal protector
IOL (Internal)
Capacitor
35μF
Refrigerant oil
ml
480 (ESTEL OIL VG74)
Evaporator coil
Number of rows
3
Tube pitch(a)x row pitch(b)
mm
22×19.05
Fin spacing
mm
1.6
Fin type (code)
Hydrophilic aluminum
Tube outside dia. and type
mm
φ7.94 Inner groove copper tube
Coil length x height
mm
482×352
Number of circuits
4

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Model
COMPAK KHP 35/300 ACS1
Fan motor
Model
YDK30-6R
Brand
Welling
Input
W
68/56/50
Speed
r/min
620/530/465
Locked rotor Amp(LRA)
A
0.35
Capacitor
2.5μF/450V
Water pipeline
Water inlet pipe
DN20
Water outlet pipe
DN20
Drainage pipe
DN20
PTR valve joint
DN20
Max. operating pressure
MPa
1.0
Water side heat exchanger
Dividing wall type heat exchanger
E-heater
kW
3.15×1
Hot water yield
m³/h
0.086
Loading Quantity
20'/40'/40H
Pcs
21/45/45
Notes:
1. The test conditions: outdoor temperature 15/12℃ (DB/WB), inlet water temperature 15℃, outlet water temperature 45℃.
2. Sound pressure value test conditions: four side of the unit, distance is 1m, and height is 1m + half of the unit’s height.
The sound pressure level is following this procedure:
3. The specification may be changed for product improvement, please refer to the nameplate.

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2.5 Dimension
Unit: mm
2.6 Performance data
Running mode will be automatically selected. Manually mode selection is not supported.
Running Temperature Range:
Setting water temperature target range: 38~65.
E-heater running ambient temperature range: -20~43.
Heat pump running ambient temperature range: -7~43.
Water temperature limits:
Unit: 
Ambient Temp. (T4)
T4≤-7
-7≤T4<-2
-2≤T4<2
2≤T4<7
7≤T4<43
43≤T4
Max. Temp. (Heat pump)
-
42
47
55
65
-
Max. Temp. (E-heater)
65
65
65
65
65
65
When ambient temperature bellows 2, heat pump and E-heater will take different portions of heating
capacity, generally the lower of ambient temperature, the lower portion of heat pump will contribute as
well as the higher portion of E-heater will provide more detail please refer to the above table.
650
1920
Φ650

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The data & curve between heat-up time and ambient temperature
 Heat-up time (h)
Water outlet temperature ()
Ambient Temp. ()
45
55
65
-7
1.7
2.25
2.75
-5
1.7
2.25
2.75
2
5
6.8
7.2
7
4.25
5.67
7
15
3
4.2
5.3
20
2.8
3.8
5
25
2.5
3.5
4.5
32
2.25
3
4
35
2.13
3
4
40
2
2.8
3.67
43
2
2.88
3.67
0
1
2
3
4
5
6
7
8
-7 -5 2 7 15 20 25 32 35 40 43
Heat-up
Time (h)
Ambient Temp. (
℃
)
15-45
15-55
15-65

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The data & curve between capacity and ambient temperature
Capacity (W)
Water outlet temperature ()
Ambient Temp. ()
45
55
65
-7
5736
5642
5698
-5
5736
5642
5698
2
1949
1714
2100
7
2868
2339
2418
15
3346
3190
3062
20
3638
3458
3360
25
3906
3759
3656
32
4394
4284
4170
35
4597
4452
4300
40
4743
4527
4519
43
5108
4859
4738
0
1000
2000
3000
4000
5000
6000
7000
-7 -5 2 7 15 20 25 32 35 40 43
Capacity
W)
Ambient Temp. (
℃
15-45
15-55
15-65

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The data & curve between COP and ambient temperature
 COP
Water outlet temperature ()
Ambient Temp. ()
45
55
65
-7
1.53
1.5
1.57
-5
1.53
1.5
1.57
2
2.47
1.88
2.18
7
3.62
2.7
2.7
15
3.83
3.42
3.09
20
4.06
3.61
3.3
25
4.21
3.79
3.47
32
4.56
4.17
3.72
35
4.67
4.24
3.83
40
4.74
4.21
3.95
43
5.07
4.47
4.07
COP varies at different ambient temperature. Normally lower ambient temperature result in longer heat-up
time because of lower effective performance. While the ambient temperature below than -7, heat pump
efficiency will decrease dramatically, the unit will automatically shift to E-heater running.
0
1
2
3
4
5
6
-7 -5 2 7 15 20 25 32 35 40 43
COP
Ambient Temp. (
℃
15-45
15-55
15-65

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2.7 Wiring diagram

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2.8 Installation
2.8.1 Transport
² In order to avoid scratch or deformation of the unit surface, apply guard boards to the contacting
surface. No contact of fingers and other things with the vanes. Don’t incline the unit more than 75° in
moving and keep it vertical when installing.
² This unit is heavy, it needs to be carried by two or more persons otherwise might cause injury and
damage.
2.8.2 Location of installation
Location requirements
² Enough space for installation and maintenance shall be preserved.
² The air inlet and outlet should be free from obstacles and strong wind.
² The base surface should be flat, which should be inclined no more than 2°, and able to bear the
weight of the unit and suitable for installing the unit without increasing noise or vibration.
² The operation noise and air flow expelled should not affect neighbors.
² No flammable gas is leaked nearby.
² It is convenient for piping and wiring.
² If the unit has to be installed in the indoor space, the unit might cause indoor temperature decreased
and noise, please take preventive measures for this.
² If the unit has to be installed on a metal part of building, make sure the well electric insulation which
should meet the relevant local electric standard.
² The ambient air temperature must also be considered when installing this unit, in heat pump mode

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the ambient air temperature must be above -7 and below 43. If the ambient air temperature
falls outside the limits, the electrical elements will activate to meet the hot water demand and the
heat pump will not operate.
² The unit should be located in an area not subject to freezing temperatures. The unit located in
unconditioned spaces(i.e., garages, basements, etc.) may require the water piping, condensate
piping, and drain piping to be insulated to shelter against freezing.
² If installed in enclosed space, the water heater must be located in a space >15m³, and must have
unrestricted air flow. As an example, a room that has a 2.5 meters tall ceiling and is 3 meters long by
2 meters wide would contain 15m³.
2.8.3 Maintenance space requirements
Unit: mm
Display
Air
outlet
Barrier
600
650
600 600
Air
inlet
600
800
600

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2.8.4 Water system piping
² In case of installing the unit at a place where outside temperature below freezing point, insulation
must be provided for all hydraulic components.
² Water inlet or outlet pipes: The specification of the water inlet or outlet thread is RC3/4”, which is
external thread. Pipes should be heat-insulated well.
² Installation of the pipe for PTR valve: The specification of the valve connecting thread is RC3/4”,
which is internal thread. After installation, it must be confirmed that the drainpipe outlet is exposed in
the air.
² Installation of the one way valve: The specification of the valve thread in accessories is RC3/4”. It is
used to prevent water from flowing backwards.
² The drainage pipe should be insulated to prevent water inside pipe from freezing in cold weather.
² After water system piping connection, turn on the inlet and outlet valve to effuse the tank. When
User
Water Inlet
Anode rod
Drainpipe
Barrel-drain
Expansion Tank for tank
(if required)
Upper
Condensate Outlet
Lower
Condensate Outlet
Notice:
The temperature limiting
valve is required on the
hot water usage terminal.
PTR valve
Water Outlet Temp. Limiting
Valve
Tap Water
One Way Valve
Shut-off Valve
Anode rod

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water flow smoothly out from outlet pipe, the tank is full, turn off all valves to check the pipeline
leakage.
² If the inlet water pressure is less than 0.15MPa, a pump should be installed at the water inlet. If the
water supply hydraulic is higher than 0.65MPa, a reducing valve should be installed at the water
inlet pipe.
² Condensate may be leaked from unit if drainage pipe is blocked, so a drainage pan should be
installed as instruction below.
² In case of installing the unit at a place where outside temperature below freezing point, insulation
must be provided for all hydraulic components.
² The drainage pipe should be insulated to prevent water inside pipe from freezing in cold weather.
² Do not dismantle the PTR valve, and do not block off the drainage pipe.
² To smoothly drain condensate, the unit should be installed at a horizontal floor. Otherwise, the drain
vent is ensured at the lowest place, and recommending the inclination angle of unit to the ground
should be no more than 2°.
50mm larger than
the dia. of unit
Max.22mm
Heat Pump
Water Heater

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2.8.5 Air duct connection
Air inlet and outlet with duct Only air inlet with duct ③Only air outlet with duct
(A+B+C+D≤10m) (A+D≤10m) (B+C≤10m)
Notes:
1. It is recommended installing the unit by only air inlet with duct in summer that could charge fresh air into room.
2. It is recommended installing the unit by only air outlet with duct in winter where there is other heat source in the
room.
Canvas Duct description
Duct description
Round duct
Rectangle duct
Other shaped duct
Dimension (mm)
Ф190
190×190
Refer to above data
Straight-line pressure drop (Pa/m)
≤2
≤2
Straight-line length (m)
≤10
≤10
Bent pressure drop (Pa)
≤2
≤2
Bent’s quantity
≤3
≤3
² The resistance of duct will decrease air-flow-rate, which will lead to capacity of unit decreased.
² For the case of unit with canvas, of the duct total length should be no more than 10m or the
maximum static pressure should within 25Pa, and the quantity bending should be no more than 3.
² For unit air outlet with duct, when unit operating, condensate will be generated around outside of
duct, please pay attention to the drainage work, we suggest to wrap the thermal insulated layer
around outside if the duct.
² To prevent interaction of inlet and outlet air, at least one air duct is suggested to be connected.

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² It is recommended to install the unit in the indoor space. It is not allowed to install the unit at outdoor
or the rain achieving place.
² In terms of the main unit connect with canvas reaching to outdoor, a reliable water-resistant
measure must be conduct on the duct, resist water drop into internal of the main unit.
² Filter should be installed at the unit inlet, if the air inlet is not connected with duct. In terms of the unit
with duct, filter should be put on the position of duct inlet.
Unit
Rain
Filter
inletoulet