HKS lazar HTi20 User manual

heat
pump
INSTALLATION & OPERATION MANUAL
Installation & Operation Manual and Guarantee Card
HKS LAZAR Sp.z o.o. ul. Wodzisławska 15B 44-335 Jastrzębie-Zdrój
ORIGINAL OPERATION MANUAL 02.03.2022
SCOP
4,49
inverter

Table of Contents
1. General Description................................................................................................................................................3
1.1. Basic information...........................................................................................................................................3
1.2. CE symbol and legal re uirements.................................................................................................................3
1.3. Safety notes and precautions...........................................................................................................................3
2. Transport and assembly..........................................................................................................................................4
2.1. Delivery..........................................................................................................................................................4
2.2. Relocation.......................................................................................................................................................4
2.3. Assembly........................................................................................................................................................5
3. Technical data.........................................................................................................................................................5
3.1. External unit dimensions................................................................................................................................5
3.2. Electrical data.................................................................................................................................................6
3.3. General data....................................................................................................................................................6
3.4. Heating circuit – technical data.......................................................................................................................7
3.5. Cooling circuit – technical data......................................................................................................................7
3.6. Control module...............................................................................................................................................8
3.7. Technical data – noise pollution.....................................................................................................................8
4. Design.....................................................................................................................................................................8
4.1. General data....................................................................................................................................................8
4.2. Refrigerant R290............................................................................................................................................9
4.3. Operation range..............................................................................................................................................9
5. Heat pump assembly.............................................................................................................................................10
5.1. Heat pump position.......................................................................................................................................10
5.2. Installation of flat roof..................................................................................................................................14
5.3. Internal unit..................................................................................................................................................14
5.4. Hydraulic connection....................................................................................................................................19
5.5. Cooling mode...............................................................................................................................................19
5.6. Connecting to swimming pool......................................................................................................................20
5.7. Reference hydraulic system..........................................................................................................................20
6. Wiring diagram.....................................................................................................................................................27
6.1. Wiring connecting external unit and internal one.........................................................................................27
6.2. Controller diagram........................................................................................................................................29
7. Service.................................................................................................................................................................. 33
7.1. Check before commissioning........................................................................................................................33
7.2. Notes for fitter..............................................................................................................................................33
7.4. Cleaning........................................................................................................................................................ 37
7.5. Inspection.....................................................................................................................................................38
7.6. Heat pump breakdown..................................................................................................................................39
8. Disposal................................................................................................................................................................ 39
8.1. Symbols........................................................................................................................................................40
8.2. Recovery of R290 refrigerant.......................................................................................................................40
9. Guarantee terms....................................................................................................................................................40
Opera,on Manual and Guarantee Card v.010
HKS LAZAR Sp.z o.o. ul. odzisławska 15B 44-335 Jastrzębie-Zdrój
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1. General Description
1.1. Basic information
This Assembly Manual constitutes the integral part of device. Before use firstly the user shall read carefully this
manual. Any use and operation not consistent with provisions of this Manual shall void the guarantee.
 Before connection firstly flushing and cleaning of heating circuit is required .
 No obstruction is allowed within air inlet and outlet area.
 During device operation water supply is required. Do not operate the device if piping
has not been supplied with water and bled.
 Regular checks of device are recommended (regarding dirt, deposits and scale ). Before
cleaning firstly turn off power supply.
 Before any works on wiring, firstly ALWAYS turn off power supply. Always
protect electric components before contact with water.
 Always adhere strictly to wiring parameters and cable size indicated in data sheet of
each heat pump .
 Note that connection to power supply shall ensure correct phase sequence .
 Failure to follow the requirements regarding wiring may result in heat pump
damages not covered with guarantee.
 Never clean the machine with products containing acids, chlorine, sand or soda.
 Works on devices hall be delivered by authorized service only
1.2. CE symbol and legal requirements
Heat pump carries CE symbol. Manufacturer declares that the manufactured device complies with the re uirements
laid down in electromagnetic compatibility directive (89/3 36/EEC) and comply with the basic re uirements laid
down in Low Voltage Directive (73/23/EEC). The device complies also with the re uirements laid down in EN
14511, EN 14825 and EN 12102 Standard
1.3. Safety notes and precautions
Heat pump has been designed and manufactured using available technology pursuant to applicable safety
re uirements. The device shall not be operated by any unauthorized persons not possessing experience or
knowledge regarding operation of device . Any use contrary to intended purpose or misuse may result in
machine damage. A supplier is not liable for any damages caused by misuse or any use contrary to intended
purpose. The purpose of device is to provide source of heat for closed central heating systems.
 Heat pump is purposed for operation outside the building only. Installation inside the
building is not allowed.
 Ambient temperature range -25° C to 35° C.
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Do not :
 operate the heat pump in the presence of corrosive or explosive gases;
 supply the greasy, contaminated or polluted air;
 make connection to ventilation ducts containing water vapour.
 Device must be installed pursuant to applicable regulations regarding wiring.
 Always check that installation is properly earthed .
 Heat pump operation follows with refrigerant R290 that is flammable gas.
Any works related to the circuit shall be delivered with tools for this purpose that comply
with applicable standards. For filling with or refrigerant recovery, device shall be
disconnected from power supply. Smoking is not allowed during device operation
Do not use fire sources (e.g. lighter, burner).
 Protection zone shall be provided around the device. Protection zone shall be free from windows,
doors, ventilation openings, lighting fixtures, basement entry, hatches, roof windows or discharge
pipes. Protection zone shall not include any adjacent plot or public circulating routes. Protection
zone shall be free from sources of ignition, including power outlets, lighting switches, lamps or
electrical switches.
Product contains refrigerant R290. In case of leakage, the refrigerant shall be collected close to the earth . Always
prevent discharge of refrigerant into building pits, recess or sewage systems . Prevent accumulation of
refrigerant that pose risk related to formation of hazardous, explosive, suffocating or toxic atmosphere.
2. ransport and assembly
2.1. Delivery
During receipt of delivery always check devices against specification in the order with regard
to any missing parts or damages resulted from transport.
2.2. Relocation
Heat pump is shipped on pallet and is secured with bolts and nuts that shall be removed before carrying and
placing the device in the position where operation will follow . Heat pump may be carried with forklift truck,
crane or other e uipment that offer appropriate lifting capacity and stability.
Max. pump inclination is 30⁰! CAU ION! Risk of injury during device lifting due to heavy weight .
Max. pump inclination is 30°. Any extensive inclination during device operation may
result in device failure within refrigerant circuit.
During shipping max. pump inclination is 30°.
Opera,on Manual and Guarantee Card v.010
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2.3. Assembly
Heat pump shall be installed outside the building, to the foundation or building external wall with
dedicated clamps . At this phase of works note to provide the pipe discharging condensate .
Devices operation site shall not expose the air intake to strong winds. Device shall be positioned transversely
to wind direction, if possible. If the site does not protect against wind , protecting wall shall be provided. Note
possible noise pollution . Do not install the device in corners, recess or between walls . Operation site shall
ensure good noise insulation (e.g. grass, bushes, palisade).
In case of heat pump suspended and fixed to building external wall always vibration
dampers shall be provided at the junction of external and internal part.
3. echnical data
3.1. External unit dimensions
Figure 1. External dimensions
H i 20/12
A510
B898
H1480
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3.2. Electrical data
Heat Pump Model H i 20/12 230V AC H i 20/12 3~400V AC
Power supply 1~230V AC 3~400V AC
Max. input power 8.5 kW 8.5 kW
Heat pump adjustment mode Inverter
Wire size 3x4mm25x2.5mm2
Protection B25 B20
Max. current 23A 18A
Temperature measurement tolerance ±2°C
Protection degree IP 15B
Surge protection II
3.3. General data
Heat Pump Model
H i 20/12 230V AC H i 20/12 3~400V AC
Data acc. to EN 14511 Heat pump coupled with generator
Operating temp. range -25°C to +35°C
Design Galvanized steel, stainless steel, aluminium
Dimensions 510x898x1480
Weight 130kg
Hydraulic Connection G1
Heating circuit pump output 3 - 87W
Air flow 5100 m3/h
Energy Class
Low temperature /high temperature A+++ / A++
η
S
Low temperature /high temperature 176,6% / 129,9%
Min. /Max. heating output
A7W35 4 - 12 kW
Min. /Max. heating output
A-10W35 4 - 12 kW
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Heat Pump Performance acc. to EN 14511
Heating Power
A7W35 4,031 kW 4,031 kW
COP A7W35 5,02 5,02
Heating Power
A7W55 3,378 kW 3,378 kW
COP A7W55 2,81 2,81
Heating Power
A2W35 3,1 kW 3,1 kW
COP A2W35 4,22 4,22
Heating Power
A2W55 3,685 kW 3,685 kW
COP A2W55 2,43 2,43
Cooling Power A35W7 5,113kW 5,113kW
Energy Efficiency Rating EER
A35W7 EN 2,70 2,70
3.4. Heating circuit – technical data
Heat Pump Model H i 20/12 230V AC H i 20/12 3~400V AC
Min. / Max.heating water
temperature 20 – 60 °C
Working pressure Min. / Max. 0,05bar / 2,5bar
0,05MPa / 0,25MPa
Min./Max. flow 600 / 2100 l/h
Min. ty of water of heating circuit 100 l
Hydraulic resistance 55 kPa
Max. length of heating water pipe 20m
3.5. Cooling circuit – technical data
Heat Pump Model H i 20/12 230V AC H i 20/12 3~400V AC
Refrigerant type R290
Refrigerant ty 1,3 kg
GWP R290 3
E uivalent CO2 0,0039 t
Allowed working pressure 25,8 bar
2,58 MPa
Opera,on Manual and Guarantee Card v.010
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3.6. Control module
Smart Smart ower
Power supply
3~400V AC
lub 1~230V AC
3~400V AC
lub 1~230V AC
Dimensions 285x335x710 625x625x1790
Hydraulic connection G1 G1
G¾
Additional heat source Electric heater output 2kW - 1~230V AC
Electric heater output 6kW - 3~400V AC
DHW tank capacity - 200 / 190 [l]
Buffer tank capacity - 40 [l]
Heating circuits Direct heating circuit Connection
option for a mixer circuit
Direct heating circuit Option for
retrofitting a mixer circuit
Maximum hydraulic pressure 2,5 bar
0,25 MPa
3.7. echnical data – noise pollution
Heat Pump Model H i 20/12 230V AC H i 20/12 3~400V AC
Noise level acc. To EN 11202 A7W35 64 dB (A)
Noise level acc. To EN 11202 A2W35
Operation at 50% output 51 dB (A)
4. Design
4.1. General data
During heat pump operation the energy is transferred from the outside into the building (lower heat source), and
then the air heated up to 62°C is transferred to the central heating system .
Heat accumulated inside the evaporator increases temperature of refrigerant flowing into the compressor .
Refrigerant of increased temperature and pressure ensures heat transfer inside the evaporator and returns to the
evaporator through the expansion valve . The heating water collects heat from refrigerant inside the evaporator.
Then circulating pump ensures flow of heating water into building heating system.
Heat pump shall be coupled with building heating system operating at low output, preferably underfloor
heating system or wall radiators. Higher output of heating radiators may result in poor heating during
cold days and increased costs of device operation .
Opera,on Manual and Guarantee Card v.010
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Figure 2. Heat pump operation diagram
4.2. Refrigerant R290
Refrigerant R290 is a naturally occurring hydrocarbon in natural gas deposits . It has no ozone depletion
potential (ODP = 0) and a negligible direct global warming effect (GWP = 3). It well mixes up with mineral
oil , and with regard to heating efficiency offers performance corresponding to HCF refrigerants e.g. R134A ,
R404A.
Technical data:
- Standard evaporation temperature (at 1bar abs.): -42°C;
- Critical temperature: 97°C;
- Explosion limits: 2.1÷9.5% vol. in the air;
- Compatibility of materials: does not cause corrosion.
4.3. Operation range
The below performance diagram relates to safe heat pump operation depending on T2 temperature (heated
water temperature) up to T1 temperature (air temperature). Ther4 controller automatically adjusts
temperature of heated water to weather conditions, what ensures safe compressor operation and extends its
service life.
Opera,on Manual and Guarantee Card v.010
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Figure 3. Compressor operation temperature range
Figure 4. Power range of the HTi20 12 heat pump
5. Heat pump assembly
5.1. Heat pump position
It is recommended to deliver concrete foundation where the heat pump is to be seated, providing rubber
vibration dumpers that allow unrestricted positioning of device . Heat pumps are fitted with drip tray that
collects any condensate generated during device operation and discharged with drain pipe into the soil or
provided fixture drain. Other option is hanging the device onto building external wall with dedicated
clamps..
Opera,on Manual and Guarantee Card v.010
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To connect an external unit and interior system the opening in the wall shall be delivered for pipe and ducts
penetration. Note to adhere to re uired minimum safety distance and zone . Temperature within air outlet
area is ca. 5°C below ambient temperature , therefore formation of icing is possible at specific weather
conditions . Note to ensure heat pump position where air outlet is not directed towards circulating routes .
Always adhere to re uired distance from wall, wall openings, windows, basement windows. Note to ensure
condensate discharge to prevent accumulation of moisture on building foundation .
Figure 5. Heat pump position and assembly.
1 – Heat pump; 2 – Condense drain; 3 – Building wall; 4 – Discharge pipe
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Figure 6. Heat pump position and assembly.
1 – Heat pump; 2 – Absorbent subbase (gravel); 3 – Pad foundation; 4 - Stone, crushed stone
Figure 7. Heat pump foundation – top view
1 – Pad foundation; 2 – Absorbent subbase (gravel, sand); 3 – Condensate drain
Opera,on Manual and Guarantee Card v.010
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Figure 8. Wall installed heat pump
1- Protective zone
Do not install heat pump on the lawn or other
surface of poor stability .
Heat pump position shall ensure that no window or door in near the exhaust.
 When determining position of heat pump always prevailing wind shall be taken into account.
 Do not install the device near flammable substances and ventilation openings .
 Fan shall be always be positioned against the windows.
 Always prevent exposure of product to dusty or contaminated air.
 Do not install the device under deciduous trees.
 Do not install heat pump near heat sources, flammable materials or intake vents.
 Note to ensure unrestricted access to heat pump to enable maintenance inspections and required
repairs.
 Do not install device near windows and corners
 During selection of site noise generated by device shall be taken into account
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5.2. Installation of flat roof
Heat pump may be installed on the flat roof, however the following shall be taken into account.
Always an unrestricted access shall be ensured to the heat pump. During any works related to the device, the
hazardous zone shall be provided within 2m from device, plus a re uired distance. No person is allowed within
the hazardous zone . If not possible, note to install e uipment protecting against fall , e.g. a barrier withstanding
loading . Alternately the device protecting against fall shall be provided, e.g. scaffolding or fall protection cover.
Always keep safe distance from roof opening and flat roof windows. During works protect roof opening and
flat roof windows to prevent a fall e.g. by installing fencing.
5.3. Internal unit
Heat pump internal module shall be installed inside the building only to prevent exposure to water and humidity,
as well as to ensure an unrestricted access for user and service engineer . Boiler room control panel shall be
installed to the wall in vertical position using expansion plugs.
Note that an unrestricted access is re uired to ensure reliable and proper operation of control panel .
Figure 9. Smart internal unit
1 – Control panel, touch screen; 2 – Hot water supply; 3 – Supply from heat pump; 4 –Central heating
supply
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Figure 10. Smart internal unit
1 – Top supply water pump; 2 – Flow heater; 3 – Water filter; 4 – Central heating Hot water switching
valve; 5- Safety assembly position
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Figure 11. Smart Tower indoor unit - rear view
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1
2
6
10
12
16
4
5
3
8
7
9
11
15
14
17
13
18
F
B
C
D
A
E
G
H

No. Description of components
1 Drain valve
2 Safety valve CO
3 Pressure gauge CH
4 Buffer Tank
5 Heater
6 Upper source pump
7 Switching valve CH/DHW
8 Magnetic filter
9 Differentail valve
10 Direct circuit pump (option)
11 Mixing valve with actuator (option)
12 Circulation pump of circuit 2 (option)
13 Air vent
14 Expansion vessel CH
15 DHW safety valve
16 Expansion vessel for DHW
17 Electric box
18 DHW tank
A Flow from the heat pump
B Return to the heat pump
C Return from the direct circuit
D Supply to the direct circuit
E Return to circuit 2
F Supply circuit 2
G Supply DHW
HDHW returrn
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Figure 12. Jednostka wewnętrzna Smart Tower
1- Obudowa; 2- Panel sterujący
Figure 13. Exemplary location of Smart Towerz with minimum service space
When connecting the indoor unit, be sure to use shut-off valves for subsequent service work
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5.4. Hydraulic connection
Note to ensure proper diameter of hydraulic connection pipes between control panel and heat pump, appropriate
to length and uantity of elbows.
Heat pump connection shall be provided with two pipes: one supplying the top source and return pipe . Note
to adhere to specification regarding pipe diameter and hose, to ensure proper water flow through the heat
exchanger located near the heat pump.
Figure 14. External unit
1 – External unit power supply; 2 – Communication wiring, 3 - Water return;
4 - Water supply; 5 – Condensate drain.
When delivering water connection to the exchanger, ensure that stub pipes are connected to water
supply and return respectively. Water connection is recommended to be provided with pipe diameter
min. 25mm. After water connection, ensure that insulation is installed of water pipes.
When connecting water supply to the external unit, note the direction of water flow through the
exchanger. Water supply shall be connected to lower stub pipe of exchanger, whereas hot water
return to top stub pipe of plate exchanger.
5.5. Cooling mode
Heat pump enables generation of chilled water for spaces cooling.
Note to follow the following rules during device operation:
 System shall be provided with materials resistant to low temperature
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 Icing water temperature shall be always over 7ºC
 System shall be filled with Propylene glycol solution
 When operating H i 20 heat pump note to ensure surface cooling by programming
refrigerant temperature that is below dew point
 Use of condensation sensor is recommended
 Use of flow-meter is recommended
5.6. Connecting to swimming pool
Heat pump connection to swimming pool heating system is possible, however the following issues shall be
taken into account: do not connect device heating circuit directly to swimming pool system. Always heat
exchanger shall be installed and other components re uired for such installation.
5.7. Reference hydraulic system
The following diagrams indicate heat pump connection to buffer tank, hot water tank and building heating
system . To ensure heat pump reliable and good operation, always follow the instructions regarding device
connection to hydraulic system.
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