Solimpeks KRS-450E/SN2 Specification sheet

Operation and Installation Manual
Air Source Heat Pump
V.201908KLT
>> KRS-450E/SN2

Heat Pump For Heating And Cooling Series
CONTENTS
9. Maintenance and Trouble Shooting
9.1 Maintenance
9.2 Failure code checking
9.3 Common failures code
9.4 Parameter checking and adjustment
9.5 Parameter number and description table
9.6 The manometer instruction
7. Heat pump controller
7.1 Operating buttons and display
7.2.1 Lock and unlock
7.2.2 ON/OFF switch
7.2.7 Erase history errors
7.2.8 Clock setting
9.5.1 User Parameter
6. Commissioning
6.1 Preparation Before Commissioning
6.2 Commissioning
5. Installation
5.1 Heat Pump unit Installation
5.2 Water System Installation
5.2.1 Water Tank Installation
5.2.2 Water Piping Installation
5.3 Power Source Installation
4. Technical data
4.1 Parameter table
4.2 Dimension
4.3 Performance Curves
4.4 System Diagram
4.5 Components
1. Features/Benefits
2. Notes/Precautions
3. Model Number Nomenclature
8. Circuit drawing
1
1
2
2
2
3
4
5
6
7
7
9
9
9
11
13
13
13
14
14
15
15
23
17
17
20
21
21
22
22
23
23
28
5.4 Wire controller installation 12
9.7 Trouble Shooting 29
9.5.2 Factory parameter list 25
7.2.3 Water temperature setting
7.2.4 Mode switch
7.2.5 Manual defrosting
15
15
15
7.2.6 Manual electric heater 16
9.5.3 Unit status checking 28
7.2 Operation 15
7.2.9 ON/OFF timer setting
7.2.10 Timer cancelling
19
19

1 Features/Benefits
Wide Application Ranges
The domestic hot water heat pump is designed for Full Consideration for Noise Control
Compressor rubber feet are specially selected
offering central hot water for bigger houses, as
for reducing vibration. Specially, compressor
well as commercial buildings such as hotels,
sound jacket is available for every unit. Well-
offices, schools, hospitals, apartments etc. The hot
balanced fans and fan motors, with the optimized
water outlet range is wide from 20℃ to 60℃,
fan holder, contributes to the low noise operation.
meeting demands for most hot water project. The
The cabinet inside is insulated to reduce noise
performance is at wide ambient temperature range
transmission.
from -10~43 . Modular control system is available
to meet the demand of huge hot water projects. Reliable Design and Strict Quality Control
Standard safety features for the refrigerant circuit
Assuring You Get Grants from Your Government
include high-pressure switch and low-pressure
Designed for high efficiency performance over a
switch to detect loss of refrigerant, as well as
lifetime of operation. The annual average COP is
deficient water flow. Equipment safety features
good. The water pipes and refrigerant pipes are
include water loop temperature monitoring,
well insulated to minimize the heat loss.
voltage protection, water coil freeze protection.
Durable and Long Life All safety features are tested and run at the factory
High efficiency compressor for all units, with to assure proper operation of all components and
durable features against high temperature and safety switches.
high pressure for long life. The coaxial coil heat All components are carefully designed and
exchangers are durable for anti-corrsion, hard selected for endurance, durability, and carefree
water, high pressure and unexpected freeze day-to-day operation. Each unit is fully tested in
caused by power cut-off. performance and safety before exit factory.
Strong Cabinet Simple Maintenance and Serviceability
Standard unit fabrication consists of heavy gage Full access for maintenance or service is provided
galvanized sheet metal cabinet construction that from the maintenance panel, for better flexibility
provides maximum strength. All interior sheet in confined space. Easy removal of the control
metal surfaces are powder-painted for maximum box from the unit provides access to all refrigerant
corrosion protection to ensure resilience for long components. The refrigerant circuit is easily
term vitality. Compact, stackable cabinets are tested and serviced though the use of high and
designed to minimize installation space. low pressure ports integral to the refrigerant
℃
1
2 Notes/Precautions
The installation, commissioning and wires are apart from hot or moving parts [eg:
maintenance of the system should only be done compressor, fan] of the system to avoid
by qualified technician with adequate knowledge damage to the wires.
Anti-freezing measures must be well done to
of the relevant standards and local regulations
avoid damage to the water system and the heat
as well as experience with similar systems.
pump water heat exchanger.
Please make sure the water flow is sufficient
Please make sure the lifting and
all the time.
transportation are safely done according to
All ground line connections must be prepared the heat pump size and weight.
in accordance with relevant local regulations.
It is very dangerous work done at the facility
To reduce the risk of electrical insulation without previously cutting off the electricity from
faults, you first make the connection of the the main power source.
protective conductor of the heat pump safe
When installing the system, please ensure
according to local regulations.
that no contaminants enter the water cycle.
When installation,make sure that the inside
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Heat Pump For Heating And Cooling Series

2
Heat Pump For Heating And Cooling Series
3 Model Number Nomenclature
4. Technical data
4. 1 Parameter table
KRS-450E/SN2
N2 - R410a
S - 3 phase Omit - Single phase
E - vertical fan discharge
45 0- 12 HP
KRS - air to water
Refrigerant Type
Case Structure
Heating Capacity
Heat Pump Type
Power Supply
Input Power
Running Current
Max. Input Power
Max. Running Current
Refrigerant
Compressor
Compressor Type
Compressor Quantity
Outlet Water Temp
Max. Outlet Water Temp
Hot Water Yield
Water Flow
Condenser
Water Pressure Drop
Water Connection Tube
Noise
Electric Protection
Mechanical Protection
Power Supply
Heating Capacity
Net/Gross Weight
Dimension
Packing Dimension
kW
kW
A
kW
A
ºC
ºC
L/h
3
m /h
Kpa
mm
dB(A)
V/Ph/Hz
kg
mm
mm
Measuring condition: Dry/wet bulb temp 20ºC/15ºC; Water inlet/outlet temp 15ºC/55ºC.
45
10.8
18.6
16.2
27.89
967
9.7
55
<61
KRS-450E/SN2
268/316
1450x730x1266
1525x805x1420
380/3/50
R410a
Scroll
2
55
60
Panasonic
Tube in shell
Dn40
I
IPX4

1450 702 7551266
KRS-450E/SN2
3
708
4.2 Dimension
High Pressure Gauge (system2)
Low Pressure Gauge (system 2)
Water Outlet
Water Inlet
Power Cable Hole
Wire Controller Cable Hole
Length(mm) Wide(mm) A(mm)Height(mm)Model
L
H
W
A
High Pressure Gauge (system1)
Low Pressure Gauge (system 1)
B(mm)
B
300,380,450
Heat Pump For Heating And Cooling Series

Heat Pump For Heating And Cooling Series
4
4.3 Performance Curves
Model: KRS-450E/SN2

Heat Pump For Heating And Cooling Series
4.4 System Diagram
Heating Mode Water inlet
Water inlet
Water outlet
Water outlet
Defrosting Mode
High pressure switch
High pressure switch
Low pressure switch
Low pressure switch
4 way valve
4 way valve
Suction accumulator
Suction accumulator
Compressor
Compressor
Condenser
(fin-tube)
(fin-tube)
Evaporator
2 way
thermal
expansion
valve
2 way
thermal
expansion
valve
Evaporator
(Tube in shell)
Condenser
(Tube in shell)
5

Heat Pump For Heating And Cooling Series
4.5 Components
Compressor
The dependable flexible
compressor, with optimized
R410a system, can achieve high
water temperature up to 60℃,
while ensures long life of the
compressor.
4-Way valve
The reliable 4 way valve can
avoid gas mixing, and ensure
stable defrosting.
Condenser
The Tube in shell heat exchanger as
condenser, with bigger heat
exchanging area and higher
efficiency.
Thermal expansion valve
The 2 way thermostatic expansion
valve ensures high efficiency when
heating, moreover, ensures high
efficiency when defrosting.
Evaporator
The hydrophilic fin-tube heat
exchanger has big heat exchanging
area and rational fin distance, thus
significantly improves heating and
defrosting efficiency.
Fan
The exterior motor fan, with 5 fan
blades, is strictly balanced. The 5
fan blades run slower, and make
sure high air volume, thus largely
brings down the noise.
Photo Features/AdvantagesComponents
6

Heat Pump For Heating And Cooling Series
5. Installation
5.1 Heat Pump unit Installation
1. The heat pump unit should be installed in a be as three times of weight as the heat pump unit.
ventilated place, with enough space for air inlet Reliable measures should be taken to keep the
and outlet, while without thermal radiation or fastener stable. The unit base should be fixed
other heat source. Besides, the air outlet should firmly by expansion bolts to ensure the entire unit
not be against the wind. stand erectly after installation.
2. Generally, the vertical air flow type heat pump 10. The unit location should avoid typhoon and
does not need anything for sheltering. The motor earthquake damage. The heat pump should not
and other internal components have been all be installed in the air in case of crash accident.
waterproof. A shelter is required to avoid snow
11. The installation should be carried out
burying onto the heat pump in heavily snowy
at the place of unobstructed ventilation of
area.
the air outlet. (The inlet and outlet of the
3. Please make sure the rated voltage 380V or air blower are illustrated in the following
400V is stably accessible to the heat pump, diagram). The installation space should be
otherwise the performance would be influenced. referred as follows:
4.The foundation of the heat pump can be cement
or steel structure. Anti-vibration rubber and a flat
foundation should be taken into account. The
foundation structure can be flexibly designed
according to the working weight of the heat
pump(Please see the technical data in this
manual.)
5. Water drainage should be available near the
installation location for draining water in an
effective way.
6.Do not install the heat pump in a place where
there is polluting or corrosive material like oil,
flammable and explosive gas and sulfide etc.
Keep it far away from sands, falling leaves and
area with high-frequency equipment.
7.The foundation should be heightened to avoid
the water inflow in rainy season and snow burying
in winter if it is installed in the open air.
8. Installation in balcony or on roof-top must be
accordance with the allowable stress of the
building structure.
9.The heat pump should be fixed firmly on the
base. The bearing capability of the frame should
Up flow more than
2000mm
more than
1000mm
more than
1000mm
air inlet air inlet
Horizontal View
enough space for
maintenance
more than
1000mm
more than
1000mm
more than
1000mm
air inlet
air inlet
air inlet
Vertical View
7

Heat Pump For Heating And Cooling Series
▲ An exhaust duct should be
connected to the heat pump air outlet if
there is a barrier above the air outlet.
over 1000mm
▲ A certain distance should be kept among the heat pumps
and it should be at least 1 meter when several heat pumps
are installed side by side.
more than
1000mm
air inlet
air intake more than
1000mm
more than
1000mm
more than
1000mm
more than
1000mm
more than
1000mm
more than
1000mm
air inlet air inlet air inlet
8

5.2 Water System Installation
5.2.1 Water Tank Installation
5.2.2 Water Piping Installation
1. The water tank should be put in a place where pump and the water tank should be no more than
ambient temperature is higher than 0ºC. 2 meters, when water tank position is higher than
that of the heat pump.
2. It can be installed either outdoors or on the
roof-top (some elements such as the size of 4. Do not install the water tank in a pollutive or
water tank and the bearing capability of the corrosive area.
building should be considered). Installation on
5. The reasonable allocation of the heat pump
roof-top should be based on support such as
and water tank volume should deploy by 1/0.6 as
crossbeam or pillar.
maximum. Please refer to the following:
3.The water tank should not be installed lower
than the foundation of the heat pump; It is
suggested to install the heat pump, the water
tank and the circulation pump at the same level.
Besides, the height difference between the heat
1. Drainpipe and overflow pipe should be
installed near the gutter or the sinkhole for
draining water more efficiently. Discharge valve
is necessary on the drainpipe.
carried out for the water supply valve and the
stop valve of the system (according to local
ambient temperature) for avoiding icing of the
water supply pipe and the valves.
2. Service valve needs to be installed before the
6. Keep the water pipes straight and the pipeline
magnet-valves on the system pipeline for further
allocation reasonable; Reduce pipe turnings as
inspection.
many as possible to reduce water resistance.
3. The pressure of the water outlet should be
7.Prevent the pipeline and the connectors from
between 0.3MPa and 0.6MPa.
water leakage.
4.It is recommended to use metal pipeline such
8.The water pressure bearing capability of each
as stainless steel pipes, internal-plastic pipes,
part of the piping system should be tested after
internal stainless steel pipes or copper pipes
the installation is finished; Drainage should be
etc; Telescopic issue of the pipeline between
done to create a clean interior system.
heat pump unit and water tank should be
considered if plastic pipeline such as PPR pipe 9. Measures of heat preservation for the hot
and ABS pipe etc. is used. water pipeline need to be conducted after
assuring no water leakage.
5. In winter, heat preservation may need to be
9
8000L
Tank volume
Model
450
Heat Pump For Heating And Cooling Series

Heat Pump For Heating And Cooling Series
Heat pump Installation
Shut-Off Valve
Solenoid Valve
Check Valve
Elec Heater
Water Pump
Y-Shape Filter
10
Flow Switch
Heat Pump
Controller
Heat Pump
Dinning Hall
Water
Pump
Filter
Filter
Flow Switch
(can omit)
Guest Room
Sauna Room
Drainage
Water Tank
Solenoid Valve
Check Valve Elec Heater
(can omit)

Heat Pump For Heating And Cooling Series
5.3 Power Source Installation
Recommended wire specification
Power Cable Solenoid Valve SensorModel Water Pump
KRS-450E/SN2 2
5x6mm 2 3x1.5mm 2 3x1.0mm 2 2x0.35mm
Note: the above specification is the lowest one we recommend. Please choose bigger wires if additional
power is required under installation.
11

5.4. Wire control installation
The wired controller is originally fixed on the maintenance door of the machine; please refer to below steps if
you want to install it on the wall:
1.Take down the controller from the machine. Please pay attention that the communication wire is connected
with
The circuit board, separate them from where they match.
2.Use a screwdriver to open the clip as picture 1, separate the controller as 2 parts, as picture 2
3.On the wall that you are going to install the controller, drill 2 holes at a level parallel to the sight line as
picture 3.
The hole distance is 60mm, diameter is 8mm.
4.Place the plastic screws of the enclosure into the hole, and use the tapping screw (ST4*16 D-1) enclosed to
fix the back cover of controller on the wall, as picture 4
5.Match the front and back covers perfectly, as picture 5, make sure that it is fixed firmly on the wall.
6.Connect the communication wire well.
Attention:
Please don't use keen-edged things to hit the controller face and keys, or it may cause damage.
When the controller is fixed on the wall, don't pull the communication wire, or it may cause poor contact.
Heat Pump For Heating And Cooling Series
12

6 Commissioning
6.1 Preparation Before Commissioning
6.2 Commissioning
Inspection on the heat pump which should be opened, and close all that
Check if the outside case and the inside system should be closed before the commissioning.
of the heat pump have been damaged during the Make sure the heat preservation of the water
transportation. system is in good condition.
Check if there is still air inside the water system.
If yes, use the air vents on the water system and
the circulation pumps, to discharge the air out.
Inspection on the power source system
Make sure the power source is accordance with
the specification in the manual or on the heat
pump nameplate.
Make sure all power connections and control
circuit are in place. Make sure the wiring ,
grounding and all terminals are strong and
reliable.
Inspection on the piping system
check if the water piping system, including water
supply pipe, return water pipe, pressure gauge,
thermometer, valves, water level switch are
installed correctly. Please open all the valves
The commissioning should be carried out by abnormal sound.
profession.
Check the circulation pump and all other parts
Comprehensive inspection of the entire system meet the requirement. The whole system can be
should be identified as meeting the put into use after the pre-operation for a period
requirements, and the water level inside the tank of time.
is higher than the cycling heating outlet and the
water outlet, before the commissioning.
After power on the electricity, turn on the heat
pump by pressing the on/off key on the wire
control panel. Please check if the fan and the
circulation pump are running in the right
direction. If not, shut down the power supply and
adjust the phase-order. Make sure the
compressor current is in normal range, without
Heat Pump For Heating And Cooling Series
13

Heat Pump For Heating And Cooling Series
14
7. Heat pump controller
7.1 Operating buttons and display
ON/OFF
Function
Up and Down
Clock and timer Key
Press the key for 1 second to turn on or turn off the unit as the controller is unlocked.
Press the key to return the main interface as in any other settings.
Press the key for 5 seconds to unlock as the controller is locked.
In the main interface, the key is for status query.
Page up and down, check or modify parameters.
Check or set parameters together with “Function” key.
Press “+” and “-”to set the water temperature of current mode as the unit is turned on.
Press “timer” for 5 seconds to set clock.
Long press “time” key to enter timer setting, together with “+”and “-”to set ON/OFF timer ,
totally two ON/OFF Timers can be set.
+
_
Electric Heater
h
MIN
%
℃
h
MIN
%
℃
AUTO 12
34
ON
OFF
SET OUT NO.
ROOM
IN
VALUE
FAN
℉℉
M
Set timer, cancel timer, set clock
Circulation Pump
Compressor
Heating Mode
Cooling Mode
Domestic Hot Water Mode
Defrosting Mode
WIFI
Fan motor
Set temp.
Return temp.
Warning
Key locked
Maintenance
Clock
Check running status, set parameters Plus, mode switch Minus, manual defrost Turn on, turn off, unlock
Timer

Heat Pump For Heating And Cooling Series
15
7.2.1 Lock and unlock
Press “ON/OFF” key for 5 seconds to unlock the
controller after a beep of the buzzer.
Lock automatically after 60 seconds without operation.
Homepage
Lock keys
Unlock keys
Within 60 seconds without operation
5 Secconds
℃℃
℃℃
℃℃
℃℃
OFF state
ON state
1 seconds
℃℃
1 seconds
OFF state
℃℃
℃
7.2.2 ON/OFF switch
7.2.3 Water temperature setting
When the heat pump is switched on, Press “+” and
“ -” to set the water temperature of current mode as
the unit is turned on.
7.2.4 Mode switch
Press “+” for 5 seconds to switch the mode.
7.2.5 Manual defrosting
Press “-“ for 5 seconds to enter manual defrosting
(coil temp > defrosting quit temp (H6))
To quit manual defrosting, long Press “ON/OFF” key
or wait till the defrosting time reaches the maximum
defrosting duration ( parameter H5)
Heating mode
Cooling mode
℃℃
5 seconds
℃℃
Homepage
Manual defrosting
Quit defrosting
5 seconds
5 seconds (or defrosting exit condition achieved)
℃℃
℃℃
℃℃
7.2 Operation

Heat Pump For Heating And Cooling Series
16
Homepage
turn on
electric heater
℃℃
SET
3 seconds
℃℃
SET
+
℃℃
SET
3 seconds
+
turn off
electric heater
7.2.6 Manual electric heater
Press “time” & “ON/OFF” together for 3
seconds to turn on or turn off electric heater
manually.

Heat Pump For Heating And Cooling Series
17
7.2.8 Clock setting
7.2.7 Erase history errors
In the query history errors interface, Press “ON/OFF”
and “Function” together for 5 seconds to erase all
recorded history errors.
M
℃
Clear all history
errors
+M5 seconds
℃℃
℃℃
ON or Off state
Status interface
Select history
error parameter
Return to
homepage
On or OFF state
Clock fouse
Hour focus
3 seconds
Adjust hour
Foucs minute
Adjust minute
Return to
homepage
℃℃
℃℃
℃℃
℃℃
℃℃
℃℃
℃℃
or Within 30 seconds without operation
At the first time, the time should be defined according
to local time zone;Otherwise, the accuracy of “Timer
on/Timer off” would be influenced

Heat Pump For Heating And Cooling Series
18
7.2.9 ON/OFF timer setting
With this function, the heat pump can turn on or
turn off automatically at the set time.
When the time point of “Timer on” is arrived, the
heat pump starts; thereafter, the “on/off” could be
controlled automatically based on the setting
temperature.
When the time point of “Timer off” is arrived, the
heat pump is shut down; subsequently, the machine
could no longer be controlled automatically based on
the setting temperature; it will be restarted until the
next time point of “Timer on” is arrived or the key is
pressed.
Totally 2 ON/OFF timers can be set. And they can
be applied to use for every day or only one day. In
timer setting status, the figure below NO represents
the timer sequence. If it shows “--:---“ on bottom, it
means timer invalid.
Below examples show how to set the heat pump
to switch on at 18:10 and switch off at 10:07.
If you want to use the function of “Timer on/Timer off”,
the system time
has to be detected whether it is correct in advance.
The setting method is referred to “Clock setting”.
ON or OFF state
Timer 1 focus
1
ON
1
Hour of Timer 1
focus(ON)
℃℃
℃℃
℃℃
Adjust hour
Minute of Timer 1
focus(ON)
Adjust minute
Hour of Timer 1
focus(OFF)
OFF
ON
1
ON
1
ON
1
1
℃℃
℃℃
℃℃
℃℃
Adjust hour
Minute of Timer 1
focus(OFF)
OFF
1
OFF
1
℃℃
℃℃