REXENER PR-200 Manuel utilisateur
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WATER BOILER
MODEL PR-200
User manual
For heating hot tubs and swimming pools
▶ Thank you for purchasing a Rexener water heater. It is a powerful, easy-to-use and economical heater for heating the water in a hot tub or swimming pool.▶ The Rexener water heater can be installed as the heating system of either a new or existing hot tub or swimming pool. It can also be installed in systems equipped with a circulation pump and filter.▶ We recommend that you read the operating instructions carefully. Once you have read the user manual, ensure that it is stored in such a way that it is available to everyone using the heater.▶ Study the safety instructions with particular care before using the heater.▶ The conditions in northern countries have been taken into account in the design of the Rexener heater. If you take the heater abroad, check the mains voltage in that new country.▶ The product has a one-year warranty. ▶ Due to active product development, the manufacturer reserves the right to make changes to the technical specifications and functional descriptions in this manual without separate notice.
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GREETING FROM THE IMPORTER’S REPRESENTATIVE ······················ 3
OPERATING PRINCIPLE OF THE REXENER WATER HEATER ··············· 4
SAFETY INSTRUCTIONS ·································································· 6
ADVICE FOR INSTALLING THE DEVICE············································· 8-9
• PREPARING THE INSTALLATION LOCATION AND HEATER INSTALLATION ··· 8
• CONTENT OF THE REXENER WATER HEATER DELIVERY················· 9
• INSTALLING THE REXENER WATER HEATER ·································· 9
BLEEDING THE FUEL DELIVERY SYSTEM··········································11
HEATER STRUCTURE ····································································11-12
• STRUCTURAL FIGURES································································11
• OPERATING SWITCHES AND DISPLAY ···········································12
OPERATING INSTRUCTIONS·························································· 13-14
• USING THE REXENER WATER HEATER ··········································13
• CIRCULATION PUMP ····································································13
• RESETTING THE OVER HEAT PREVENTION SYSTEM ······················14
DAILY INSPECTION POINTS······························································14
CLEANING AND MAINTENANCE····················································· 14-15
DIAGNOSING AND REPAIRING OPERATING FAILURES····················· 16-17
PROBLEM SITUATIONS····································································18
PRODUCT SPECIFICATIONS ·····························································19
TECHNICAL SPECIFICATIONS ··························································20
WARRANTY FORM···········································································21
CONTENTS
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A thank you from the managing director
Thank you for purchasing a high-quality Rexener water heater.
It was developed in Finland over many years in close cooperation with the
manufacturer Hephzibah Co., Ltd.
During the development, a variety of technical solutions were sought to ensure
that the heater is easy to use and reliable in northern climates. “Press a button
and enjoy” could be described as the leading theme of the product development
process.
The Rexener water heater utilises a number of circuits to monitor and ensure
the heater, while the digital control panel guarantees ease of use.
The Rexener water heater was designed to be easy to install as the heater of
a new hot tub or swimming pool, or to replace the heating solutions of either
traditional wood-heated hot tubs or swimming pools.
Biodiesel is the recommended fuel for the Rexener water heater, but the device
system require very little power.
the Rexener water heater.
I hope you will enjoy many blissful moments in the warmth provided by the
Rexener heater!
Olli Kuusela
Managing Director
Rex Nordic Oy
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OPERATING PRINCIPLE OF THE REXENER WATER HEATER
Operating principle of the Rexener water heater
The Rexener water heater’s oil burner is well-protected under heater’s metal housing.
Northern weather conditions were considered in the design of the oil burner, controlling
electronics and fuel tank.
The oil burner fan feeds air into the combustion chamber into which fuel is injected.
The fuel is ignited with an ignition device controlled by electronics.
The heat energy from the oil is used to warm the water running in the pipes inside the
advantage of the energy contained by the fuel oil. The Rexener water heater produces
practically no carbon monoxide. Only harmless carbon dioxide is discharged from the
exhaust pipe.
Since all of the energy in the oil can be converted into heating power, the Rexener
The long exhaust pipe assembly supplied with the heater ensures silence and safety,
Due to its high power level, the Rexener water heater requires a circulation pump to
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1. Accurate temperature adjustment
You can set the desired water temperature for the Rexener heater between 0 and 45
degrees (°C). The heater will maintain the set temperature automatically.
2. Powerful oil burner
The powerful fan and high-pressure oil injection ensure the reliability of the Rexener
water heater’s oil burner in all conditions.
3. Comprehensive safety systems
The electronically-controlled safety functions of the Rexener water heater ensure the
safe usability of the heater in all conditions. The safety functions include two systems
monitoring.
4. Overheat prevention systems
The oil burner is switched off if the temperature of the water coming to the heater rises
to 50°C and is switched off again if the temperature rises to 75°C (2nd safety device)
5. Water level monitoring system
the device will not start. If the water level drops too low, the burner is switched off.
6. Flame detector and automatic shutdown system
which deactivates the oil burner and fuel pump. This ensures the safety of the Rexener
water heater in all situations.
7. Diagnostics function
The diagnostics function connected to the Rexener water heater’s control system
checks all the heater functions before activation.
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The purpose of these safety instructions is to ensure the safe use of the Rexener water
heater. Adherence to these instructions minimises the risk of injury or death and damage to
the heating device as well as other items or premises.
Please read the safety instructions with care.
•The instructions feature three concepts: “Danger to life”, “Warning” and “Note”.
DANGER TO LIFE: This marking indicates an immediate risk of death or probable
serious injury.
WARNING: This marking indicates the risk of serious injury and/or death.
NOTE: This marking indicates the risk of minor injury or structural damage.
DANGER TO LIFE
• Never use petrol or similar flammable fuel to power the heater. This may cause the burner,
which was designed for fuel oil and diesel, to explode or start a fire due to the explosive
combustion.
• Never use any containers carrying flammable liquids or aerosols near the heater or leave
them in its immediate vicinity. They may cause a fire and/or explosion.
WARNING
• Only use 230 volt 50 Hz mains electricity. Incorrect voltage may cause a fire or electrical
shock.
• The power cord of the device may only be connected to a grounded socket.
• Do not use this heater for any purpose other than heating a hot tub or swimming pool.
• Do not handle the heater’s power cord, electrical devices or control panel with wet hands.
The moisture may cause a short circuit, failure, electrical shock and even fire.
• Do not clean the interior of the heater with a wet cloth. The moisture may cause a short
circuit, failure, electrical shock and even fire.
• Do not place your hands or any objects inside a running heater. The current in the
electrical cables between the control panel and heater burner may cause an electrical
shock.
• Ensure that the heater remains upright during operation. Do not bang or push the heater
or cause it to fall over. Damage to the heater may cause an electrical shock or fire.
• Hot condensation water and steam may cause burns.
• Do not make any structural changes to the heater or attempt to repair the burner, water
heating circuit or control panel.
SAFETY INSTRUCTIONS
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• Never place electrical equipment or heavy objects on the heater.
• Do not cover the heater with any obstructions such as clothing, fabric or plastic bags. This
may cause a fire.
• Do not wash the heater with a water hose or pressure washer. Water entering the heater’s
protective housing may cause a short circuit, electrical shock and/or fire.
• Do not use petrol, thinner or other technical solvents to clean the heater. They may cause
a short circuit, electrical and/or fire.
• Install the heater on a non-flammable surface.
• Protect the heater from water spatter.
• Always ensure the condition of the power cord. Do not bend the cord, and ensure that it is
not crushed under or between anything. A damaged power cord or plug may cause a short
circuit, electrical shock and even fire.
with a new one at a maintenance shop authorised by the manufacturer or importer, or in
some other authorised provider of electrical repair services.
• Do not extend the power cord by connecting additional lengths of cord to it or its connector
plugs. Poorly-made connections may cause a short circuit, electrical shock and/or fire.
• If the plug gets dirty, clean it carefully before connecting it to the socket. A dirty plug may
cause a failure and, as the dirt is heated, smoke, a short circuit and even fire may result.
• Before cleaning and maintaining the device, disconnect the power plug from the socket
and allow the device to cool down sufficiently. Neglecting these instructions may lead to
burns or an electrical shock.
• During thunder, deactivate the device and disconnect the power plug from the electrical
grid.
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• The Rexener water heater must be installed in a visible location that can be easily monitored.
• Do not install the heater in a location where it is subjected to significant heat or continuous
moisture.
• Ensure sufficient room around the heater for maintenance and operation.
• The manufacturer’s recommendation is 60 cm from fixed structures.
• Clear the immediate vicinity of the heater of flammable materials or structures, wood piles,
wooden walls or roofs, piles of leaves or twigs, etc.
• In operating conditions, the Rexener water heater weighs approx. 38 kg.
Prepare a sufficiently solid and strong foundation for the heater with concrete tiles, for example.
Remember to counteract the effects of frost heave. Remove loose soil from under the tiles and
replace it with gravel up to a depth of about 20 cm.
• Do not position the heater on an unstable, inclined or wobbly foundation. The device tilting and/
or falling over may cause malfunctions and lead to a fire.
• Maintain the distance over 2m between pool and boiler.
• Install the heater on a non-flammable surface.
• The heater’s legs are adjustable. Use them to ensure that the heater is level.
• Before cleaning and maintaining the device, disconnect the power plug from the socket and
allow the device to cool down sufficiently. Neglecting these instructions may lead to burns or an
electrical shock.
• Prepare a separate and safe platform for the fuel tank. Ensure that fuel can be added easily.
• The fuel tank can be installed either at a higher or equal level with the heater. The distance
between the fuel tank and heater should be no more than 150 cm.
• If possible, secure a separate fixed electrical connection and plug for the heater. In the event
that you need to use an extension cord, it should be continuous from the socket to the heater.
• Use a residual-current device in the electrical connection or extension cord.
• Obtain sufficiently long hoses at least 50 mm in diameter and with a minimum heat resistance
of 50°C as well as suitable hose clamps (6 pcs) for heater installation. You can also order them
for delivery with the heater.
• Measure the diameter of the water connections of the tub or pool to be heated. Obtain the
requisite reducers for installing the water hoses.
• Ensure the discharge of condensate and steam so that they do not cause injuries or damage
the heater’s surroundings
ADVICE FOR INSTALLING THE DEVICE
Preparing the installation location and heater installation
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• Rexener water heater, including installed fuel supply hose and power connections to the
circulation pump control and circulation pump heater control.
• Fuel tank with a fuel level gauge in the cap and a quick coupling for the tank’s outgoing fuel
hose.
• Connections of the Rexener water heater’s metal connections for a 50 mm water hose (2 pcs).
• Plugs for the Rexener water heater’s water circuit (2 pcs).
• Sealing tape for the threads of the water circuit connection (1 roll).
• Water heating circuit draining valve.
• Fuel hose connector and securing hose clamp.
• Chimney pipe (1 pcs) and cap (1 pcs)
• The manufacturer and importer strongly recommend ordering the installation service for
the Rexener water heater.
• Place the Rexener water heater in the position reserved for it. Ensure that the heater is in the
appropriate and stable position horizontally and vertically by using the adjustable legs.
• Screw in the pipe connections suitable for the heater’s water connections. Wind sealing tape
around the threaded section of the pipe connections in the direction of the thread.
• Plug the water connections on the other side of the heater. Wind sealing tape around the
threaded section of the plugs in the direction of the thread.
• Install the heating element drain valve included in the delivery in the lower section of the water
heating element Use sealing tape.
• Ensure the suitability of the hose connections of the water basin. Install any reducers that may
be needed.
• Position the circulation pump in a suitable location between the water basin to be heated and
the Rexener heater. Install the circulation pump in connection to the lower water hose.
• Shorten the water hoses to the appropriate length and install them. Remember to install the
hose clamps but do not tighten them.
• Dimension the upper water lower and install it.
• Screw the water hose clamps closed.
• Attach the connector of the circulation pump’s control cable to the water heater.
• Thread the fuel supply hose through the designated hole at the bottom of the housing.
• Attach the fuel supply hose connector to the end of the hose. Tighten the hose clamp.
• Install the fuel tank on the base you have reserved for it.
• Connect the fuel hose connector to the fuel tank connector.
• Fill the fuel tank. The manufacturer and importer recommend using biodiesel. Light fuel oil and
regular diesel are also suitable fuels.
• Connect the Rexener water heater’s power plug to the power socket.
• You can now begin to run water into the tub or pool to be heated.
Content of the Rexener water heater delivery
Installing the Rexener water heater
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The fuel supply system must be bled in conjunction with the initial start-up
or when the fuel runs out.
• Place a suitable small collection container under the fuel pump.
• Open the wing screw at the bottom of the fuel pump by 2–3 rotations.
• Connect the power cord to the power socket and press the Reset switch on the plug to
connect power to the heater.
• Press the heater’s activation switch (Power).
• The fuel pump is activated, discharging fuel and air bubbles from the bleed opening. Close
the bleeding screw.
• If the fuel hose contains a lot of air, you may need to repeat the above steps two or three
times.
• If the burner shuts down due to a lack of fuel or there is another cause to suspect that air
has entered the fuel supply circuit, you must repeat the bleeding in accordance with these
instructions.
• Should you wish to avoid bleeding in the future, do not let the fuel tank drain fully at any
point.
BLEEDING THE FUEL SUPPLY SYSTEM
air holeopen
close
air releaseswitch
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