BWT PEARL HPT 09 User manual

Instructions Manual
EN
BWT PEARL HPT 09
BWT PEARL HPT 12
BWT PEARL HPT 15
BWT PEARL HPT 18
BWT PEARL HPT 20

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BWT Group
BWT Pearl HPT 09/12/15/18/20
R&D Department
France, 04/2022
EN-SWIMING POOL HEAT PUMP
Declaration of conformity
Guidelines – Harmonised standards
We hereby declare under our sole responsibility that this product complies with the relevant guidelines
SAA:
SAFETY EN 60335-1:2012/A2:2019 EN 60335-2-40:2003/A13:2012 EN 62233:2008
EMC EN 55014-1:2017 EN 61000-3-11:2000 EN 55014-2:2015 EN 61000-3-3:2013
EN 61000-3-12:2011 EN 61000-3-2:2014
NOISE 200/14/CE
HP Models:
Other normative documents Person authorised to manage technical documentation
RoHS 2011/65/EU
WEEE 2012/19/EU
Processing by individuals of electronic appliances reaching the end of their lifespan:
The symbol depicting a barred wastebin that features on the main parts constituting the product indicates that it must not be
discarded alongside household waste. It must be brought to an adequate collection point where electronic appliances are
recycled (information available from your local waste treatment service). This product contains potentially hazardous substanc-
es.
DELIVERY AND TRANSPORT
• When you have unpacked the HP, please check the content to report any damage. Please also check that the pressure reading on the pressure gauge corre-
sponds to the outside temperature, as different values might indicate a leak, depending on the measured outdoor temperature, as different values might indicate
a leak.
• The HP should always be stored and transported in a vertical position, on a pallet and inside its original packaging.
• Transporting and/or storing the HP horizontally will void the guarantee.
DIMENSIONS
Models A B C D E
All Models 704 mm 802 mm 177 mm 217 mm 243 mm

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TECHNICAL SPECIFICATIONS
Models BWT PEARL HPT09 BWT PEARL HPT12 BWT PEARL HPT15 BWT PEARL HPT18 BWT PEARL HPT20
Recommended pool size
(Mai to septembre with a cover) 35-45 m³ 45-55 m³ 55-70 m³ 70-85 m³ 85-105 m³
Air 26°C / Water 26°C / 80%HR
Capacity in MAX Mode 9,5 kW 12,8 kW 15,3 kW 18,2 kW 20,1 kW
COP MAX Mode 6,3 6,2 6,3 6,2 6,1
Capacity in ECO Mode 9,5 ~ 3,2 kW 12,8 ~ 3,5 kW 15,3 ~ 3,9 kW 18,2 ~ 4,2 kW 20,1 ~ 5,5 kW
COP ECO Mode 10,8 ~ 6,3 10,8 ~ 6,2 10,8 ~ 6,3 11,2 ~ 6,2 10,8 ~ 6,1
Capacity in SILENT 3,2 kW 3,5 kW 3,9 kW 4,2 kW 5,5 kW
COP SILENT 10,8 10,8 10,8 11,2 10,8
Air 15°C / Water 26°C / 70%HR**
Capacity in MAX Mode 6,9 kW 9,1 kW 11,0 kW 12,7 kW 14,5 kW
COP MAX Mode 4,7 4,6 4,7 4,6 4,5
Capacity in ECO Mode 6,9 ~ 3,5 kW 9,1 ~ 3,9 kW 11,0 ~ 5,0 kW 12,7 ~ 7,1 kW 14,5 ~ 7,0 Kw
COP ECO Mode 6,6~4,7 7,8~4,6 7,7~4,7 7,9~4,6 7,9~4,5
Capacity in SILENT 3,5 kW 3,9 kW 5,0 kW 7,1 kW 7,0 kW
COP SILENT 6,4 6,6 6,5 6,6 6,6
Noise level mini-maxi (at 10m)
according to EN ISO 3744:2010 19 ~ 28 dB(a) 20 ~ 29 dB(a) 21 ~ 30 dB(a) 22 ~ 31 dB(a) 23 ~ 32 dB(a)
Operating temperature -10°C -> 38°C
Compresseor type 2D Technology Full DC
Expansion valve Electronic
Heat Exchanger Optimal Twist
Casing ABS treated against UV
Refrigerant R32
Installation
Water connection 1,5" / 50 mm
Power 230V / 1~+N / 50 Hz
Nominal current (Maximum
Current) 6,0 A (9 A) 7,9 A (13,0 A) 9,8 A (14,0 A) 11,5 A (16,0 A) 14,2A(17,0A)
Max power input (Air 26°C) 1,9 kW 2,6 kW 2,9 kW 3,8 kW 4,2 kW
Dimensions (L x l x h) Diameter 680 mm * height 775 mm
Water flow 3 m³/h 4 m³/h 5 m³/h 5 m³/h 6 m³/h
Water pressure drop 64 kPa
Weight net (gross) 45 kg (65 kg) 47 kg (69 kg) 49 kg (70kg) 57 kg (76 kg) 59 kg (76 kg)

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Installation (site, type of support, necessary space) P. 19
Hydraulic connection P. 20
Electrical connection P. 20
Immersion and starting of HP P. 22
Use P. 22
Settings P. 23
General use P. 23
Regulation (Electronic controller) P. 24
Mobile application : BWT Inverter P. 25
Controller state table P. 26
Maintenance P. 27
Wintering P. 27
Recycling the HP P. 28
After-sales technical Departement P. 28
CONTENTS

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This symbol indicates that the device uses R32, a coolant featuring a low combustion speed.
This symbol indicates that a maintenance technician must handle this equipment according to the operating manual.
This symbol indicates that the operating manual should be read attentively prior to use.
WARNING: In normal conditions, a suitable HP can heat the water of the pool by 1°C to 2°C per day.
It is therefore quite normal not to feel a temperature difference at the outlet of the circuit when the HP is operating. A heated pool should be covered to prevent heat losses.
The appliance is designed to be used in a swimming pool as described in standard NF-EN-16713.
• Failure to comply with the warnings could cause damage to the swimming pool equipment as well as severe injuries or death.
• Only a qualied person possessing the adequate technical skills (electricity, hydraulic, refrigeration) is authorised to undertake maintenance operations or repairs on the
device. A qualied technician working on the device must use/wear personal protective equipment (safety goggles, protection gloves, etc...) to avoid all risk of injury arising
during work on the device.
• Prior to any intervention on the device, ensure that it is powered down and has undergone the lockout-tagout procedure.
• The device is designed specically for use in swimming pools and spas; it must not be used for purposes other than the ones it was designed for.
• This device is not intended for children.
• This device is not intended to be used by persons (including children, of 8 or more) who lack experience or who suffer from physical, sensory, or mental impairment,
Except;
• if it is operated under supervision or with operating instructions issued by a person responsible for their safety; and
• if they understand the risks taken.
• Children must be supervised to ensure that they do not play with the device.
• The installation of the device should be carried out according to the manufacturer’s instructions and in compliance with local and national applicable standards. The installer
is responsible for the installation of the device and for compliance with national regulations relating to installation procedures. The manufacturer will not be liable in case of
non-compliance with the installation standards that apply locally.
• For any action other than simple maintenance operations by the user as described in this manual, the product should be maintained by a certied professional.
• Any improper installation and/or use can cause damages and severe injuries (and even death).
• Do not touch the fan or the moving parts, and do not insert objects or your ngers close to the moving parts when the device is operating. • Moving parts can
• cause severe injuries and even death.
• Do not pull on the hoses and the connections to move the machine.
WARNINGS CONCERNING ELECTRICAL APPLIANCES:
• The power supply of the device must be protected by a 30-mA security residual current protection system, as per the standards that apply in the country of installation.
• Do not use an extension to connect the device; only connect the device directly to a suitable power outlet.
• If a xed device does not feature a power cord and a plug, or any other means to disconnect from the power supply with a separation of the contacts in all the poles, enabling
total disconnection in case of a category III electrical surge, the manual will mention that the disconnection means must be integrated in the xed wiring, as per relevant
wiring rules.
• An adapted disconnection method, complying with all local and national requirements relating to category III electrical surges, and that disconnects all the poles of the supply
circuit, must be installed in the supply circuit of the device. This disconnection method is not provided with the device and should be provided by the installation technician.
• Prior to installation, check that:
• The voltage featuring on the information plate of the device matches the voltage of the power supply,
• The power supply is suitable for operating the device and has an earthing connection.
• The plug (as necessary) adapts to the plughole.
• If the power cord is damaged, it should imperatively be replaced by the manufacturer, a technician or a person qualied to ensure safety.
WARNINGS RELATING TO DEVICES CONTAINING A COOLANT:
• The coolant R32 is a coolant of category A2L, which is considered as potentially ammable.
• Do not release R32 uid into the atmosphere. This uid is a greenhouse effect uorinated gas, covered by the Kyoto Protocol, with a global warming potential (GWP) = 675 for
R32.
• The device must be stored in a well-ventilated place and kept away from ames.
• Install the unit outdoors. Do not install the unit indoors or in an outdoor area that is closed and poorly ventilated.
• To comply with the relevant standards and regulations in terms of the environment and installation procedures, and in particular with decree Nº 2015-1790 and/ or European
regulation EU 517/2014, a search for leaks of the cooling circuit must be conducted at least once a year. This operation should be carried out by a certied specialist of cool-
ing devices.
• Please keep and transmit these documents for reference throughout the lifespan of the device.

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3m mini
INSTALLATION (SITE, TYPE OF SUPPORT, NECESSARY SPACE)
• Install the HP outdoors at more than 2 meters from the pool.
• Place the HP on the provided vibration absorbers on a surface that is stable, solid (able to bear the weight of the device) and level (prepare a concrete base if
necessary).
• Maintain 1 m (30 cm minimum) of open space in front of the vertical air intake grids (behind and on the side of the HP) and 3 m at the outlet of the fan (on the top)
of open space without any obstacles.
• Prepare sufcient space around the HP for maintenance operations.
• Prepare a water evacuation system close to the HP to protect the installation zone.
• Keep the HP out of the reach of children, insofar as possible.
The HP should never be installed:
• in an area covered by sprinkling systems, or subject to spray or running water or mud (close to a road, take into account the effects of wind),
• under a tree,
• close to a source of heat or of ammable gas,
• in an area where it would be exposed to oil, ammable gases, corrosive products, and compounds containing sulphur,
• close to equipment operating at high frequencies,
• in a place where snow is likely to accumulate,
• in a place where it could be ooded by the condensates produced by the device as it operates,
• on a surface that could transfer the vibrations to the house.
Advice: dampen the possible noise nuisance caused by your HP.
• Do not install it close to or underneath a window.
• Do not direct the outlet of the fan towards your neighbours’ property.
• Do not direct the fan outlet (cold air) towards the swimming pool.
• Install it in an open area (sound waves bounce off surfaces).
• Install a sound barrier around the HP, making sure to maintain the required distances.
• Install 50 cm of PVC piping at the water inlet and outlet of the HP.
The HP must be installed and maintained on a xed and solid basis, with the skids placed under the feet.
• For concrete, use adapted ø 8 mm lag screws tted with washers to prevent any loosening.
• For wood, use adapted ø 8 mm hexagon head screws tted with locking washers to prevent any loosening
The Ottimo HP has four feet and a condensate ex-
traction nozzle included with the product.
the condensate extraction nozzle and the four feet
must be attached before installing the machine,
using the described methode in the gure above.

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ELECTRICAL CONNECTION
Connection of the power supply:
prior to undertaking any intervention inside the HP, it is imperative to disconnect the power supply from the HP; there is a risk of electrocution that can cause
damages, severe injuries and even death.
• Only a certied and experienced technician is authorised to conduct cabling work in an HP or to replace the power cable.
• the power supply should match the voltage featuring on the information plate of the HP.
• The HP must be connected to an earthing connection.
Electrical Installation:
To ensure safe operations and to protect the integrity of your electric installation, the HP should be connected to the electrical mains according to the following
rules:
• Upstream, the electrical mains should be protected by a 30-mA differential switch.
• The HP should be connected to a suitable class C circuit-breaker (see the table below) according to the standards and regulations in force in the country
where the system is installed.
• It is recommended to crimp the electric cables on lugs adapted to the diameter of the cable chosen before connecting them to the HP
• The power cord should be adapted to the power of the HP and the length of cable required for the installation (see the table below). The cable must be suit-
able for outdoor use.
• In the case of a three-phase system, it is imperative to follow the connection order of the phases. If phases are inverted, the compressor of the HP will not
work.
• In public spaces, the installation of an emergency stop button close to the HP is mandatory. The voltage must match the voltage mentioned on the HP.
The connections must be sized based on the power of the HP and on the installation state.
By-pass
Provided connections
(ø 50mm)
Evacuation of the condensate
Water treatment (disinfection, pH correction)
located after the HP
Bypass valve
(adjustment)
Open Valve
Half-open valve
Closed valve
From the swimming pool
Toward the swiming pool
HYDRAULIC CONNECTION
• Water quality necessary for this device: NF-EN-16713-3
• The HP is compatible with all types of water treatment. The HP must imperatively be connected by a PVC pipe of Ø 50mm to the swimming pool’s hydraulic
• circuit, after the lter and before the treatment system, regardless of its type (Cl, pH, Br metering pumps and/or electrolyser).
• Follow the hydraulic connection order (blue = water in, red = water out)
• A bypass must be installed to facilitate work on the HP.
• Before connecting the PVC pipes to the HP, make sure the circuit is clean of any work residue (stone, soil, etc.).
Connection of the condensate evacuation pack:
During operations, the HP is subject to a condensation phenomenon. This translates into a water ow, which can be more or less important depending on the
degree of humidity. To channel this ow, which can represent several litres of water per day, we recommend you install the provided condensate evacuation
pack and connect it to a suitable water evacuation circuit.

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*Maximum cable length between heat pump and head of line protection (C curve current protection)
It is recommended to use wire terminal for better electrical contact between wire and power supply terminal.
These data are only indicative, you must ask an electrician to determine the exact data for your pool installation.
Power supply must be equipped with grounding and 30 mA differential protection.
• Use the cable-gland and the pass-throught provided inside the HP for the passage of the cable.
• As this heat pump is installed outdoors, it is mandatory to pass the cable through a protective sheath for this purpose. The power supply of the HP must be
tted with a protection device in accordance with the legislation in force.
• The electric cables must be buried at a depth of 50 cm (85 cm under a road or a path) in an electrical sheath (red corrugated). When a cable buried in a
sheath crosses another cable or a pipe (gas, water, etc.) the distance between them must be greater than 20 cm.
Automation
You have a very low voltage terminal block to which you can connect your home automation. This
is an ON / OFF dry contact. Remove the existing bridge. When your home automation opens this
contact, the machine stops and displays the message: No ow.
L: Line
N: Neutral
GND : Ground
P1 : Filtration pump relay neutral (option)
P2 : Filtration pump relay line (option)
Model Breaker Maximum cable* legnht with cable sections:
Rated current (A) Rated residual action
current (mA) 2,5 mm² 4 mm² 6 mm² 10 mm²
BWT PEARL HPT 09 9 A 30 mA 43 m 68 m 100 m 170 m
BWT PEARLHPT 12 13 A 30 mA 29 m 45 m 66 m 110 m
BWT PEARL HPT 15 14 A 30 mA 24 m 39 m 56 m 96 m
BWT PEARL HPT 18 16 A 30 mA 21 m 34 m 49 m 84 m
BWT PEARL HPT 20 17 A 30 mA 19 m 30 m 44 m 75 m

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Once the HP is connected to the water circuit with the bypass, and is connected to the power supply by a professional, ensure that:
• The HP is horizontal (level).
• The HP is secured and stable.
• The water circuit has been purged of air that has been trapped in the piping of the HP.
• The pressure gauge, at the back of the HP, shows a temperature that is equal to the ambient outdoor temperature.
• The water circuit is properly connected (no leaks or damage to the hydraulic connections, the connections are properly tightened).
• The electric circuit is properly connected (the cables are tightly secured to the terminals and intermediate circuit-breaker), properly insulated, and con-
nected to the earthing connection.
• The conditions of installation and use described above have all been met.
• The outdoor temperature is between 0 and +35°C.
• The water temperature is of 15°C minimum.
• The evaporator at the rear/on the sides of the HP is clean (leaves, dust, pollen, cobwebs...)
You can now start your device by following, in the given order, the following steps:
• Open the 3 valves of the bypass (refer to the hydraulic diagram).
• Half-close the bypass valve.
• Remove all unused items or tools from the area surrounding the HP.
• Start the pump of the ltration system.
• Power up the HP by engaging the circuit-breaker and using the ON/OFF button of the display.
• Check that the HP starts and stops in sync with the ltration circuit: if no water is detected in the HP, the display shows “FLO”
• The HP starts after a delay of a few minutes.
• Adjust the temperature (“Regulation” chapter).
• Adjust the water ow (“Water ow setting” chapter).
• After a few minutes, you can adjust the bypass valve as indicated in the “Water ow setting” chapter. Having completed the above steps, cover the pool and
let the HP operate for a few days with the ltration pump in “forced mode” until the water of the pool reaches the desired bathing temperature.
USE
• Cover the pool with a cover (bubble cover, shutter...) to reduce heat losses.
IMMERSION AND STARTING OF HP
Heating priority (Option):
The ltration pump can be connected to the HP to force the ltration to operate if the water is not at the desired temperature.
Prior to this connection, a “dry contact” (normally open relay or connector) with a 230V AC coil should be provided.
Electrical connections:
• Connect the coil of this relay (A1 and A2) on the P1 and P2 terminals of the HP.
• Connect the input and the output of the dry contact (normally open) in parallel with the dry contact of the ltration clock of the swimming pool.
Parameter for taking the connection into account: Check that
the setting of the ltration pump parameter (parameter #9) is
set to “2”. If this is not the case, please contact us to change the
setting.

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SETTINGS
Water ow setting:
• To optimise the heating performance and achieve power savings, the ow of water travelling through the HP should be adjusted.
• The adjustment is done based on the reading of the adjustment pressure gauge. The adjustment is done by opening or closing the adjustment valve of the
bypass.
• To increase the pressure on the front pressure gauge: reduce the amount of water passing through the HP: open the bypass adjustment valve.
• To reduce the pressure on the front pressure gauge: increase the amount of water passing through the HP: close the bypass adjustment valve.
• During normal operations, the inlet and outlet valves must remain fully open.
Normal pressure:
• The ow of water through the HP and the uid pressure in the device are intimately linked.
• The ow value given for information purposes is of 5 to 7m³/h, i.e. approximately 100l/min to reach the maximum heating power of the HP.
• The ideal setting is achieved when the hand of the pressure gauge (for heating operations in MAX mode) indicates a temperature in °C greater by 10 to
15°C than the current temperature of the swimming pool.
• Remember, the HP must operate for a few minutes before the pressure stabilises on the pressure gauge.
• Example: the swimming pool water is 20°C, the HP has been operating for 5 minutes, and the hand of the pressure gauge indicates 20 bars / 280 PSI /
32°C / 90°F. -> 32°C – 20°C = 12°C -> the setting is right (between 10 and 15°C).
Abnormal pressure:
• If the pressure at the pressure gauge is too high or too low, that means that the ow of water through the HP is inadequate.
• Action must therefore be taken by opening or closing progressively the bypass adjustment valve, to get the pressure in the recommended range.
• When stopped, the temperature reading should be close to the temperature of the swimming pool water.
• If the hand shows 0, the device should not be used (contact your distributor).
Setting frequency:
• The ow through the HP depends much on water temperature, and to a lesser extent, on air temperature. It should therefore be adjusted:
• When the pump is started, and the water is cold;
• During the rise of temperature;
• When the desired temperature has been reached.
There should not be any reason to subsequently adjust the ow. An occasional reading of the pressure gauge to ensure everything is operating normally and
the ow remains unchanged is generally sufcient.
GENERAL USE
Water quality (standard):
Les standards de qualité de l’eau recommandés doivent absolument respecter les normes suivantes :
• Chlorine concentration less than 2.5 ppm
• pH between 6.9 and 8
• In case of sudden chlorination, isolate the heat pump by shutting the inlet and outlet valves of the device, and reset them to their initial positions after
treatment.
Maintaining the temperature:
• Once the desired temperature has been reached, you can set the daily ltration time according to your habits (8 to 10 hours per day minimum during the
season).
The heat pump will start automatically whenever necessary. The minimum operating time varies based on the time of use, please contact your distributor for
further information.
If you notice the water temperature of the pool is falling, despite the device operating continuously, increase the daily ltration time.
Do not forget to cover the pool with an insulated cover when you are not using it, to limit heat losses.
IMPORTANT: a swimming pool without a cover will lose 4 times more energy than the same pool with a cover.
The choice of the heat pump should always take into account the presence of a tarpaulin, a rolling shutter, or any other type of protection of the pool when it
is not being used.