Open Chamber Boiler with Pilot Flame Euroterm SIMPLEX 20 P PDF Manual – Complete Guide for Use and Maintenance

The open chamber and pilot flame boiler Euroterm SIMPLEX 20 P is a boiler in which the main burner is ignited with the help of a pilot light that remains always on. Traditional boilers only use a part of the sensible heat of the combustion gases because it is necessary to avoid the condensation of the gases, which would lead to corrosive phenomena.

Indeed, traditional boilers only use a part of the sensible heat of the combustion gases because it is essential to avoid the condensation of the gases, which would cause corrosive phenomena. The water vapor generated by the combustion process is then dispersed into the atmosphere through the chimney, along with the associated latent heat. In contrast, gas heating based on condensing technology reduces fuel consumption by up to 20% when replacing this boiler.

Annual Maintenance and Safety

To ensure that the boiler maintains its safety and efficiency performance, it is essential to subject it to regular maintenance every year. The annual review is vital to ensure the safety and proper ongoing operation of the device.

Boiler Checklist: Winter Preparation

• Boiler Pressure Check: Verify the pressure via the pressure gauge to ensure optimal performance.
• Thermostat Management: Check the batteries of the thermostat for accurate temperature regulation.
• System Pressure: Ensure that the heating system pressure is appropriate, between 1 and 1.5 bar.
• Professional Maintenance: Schedule professional maintenance for cleaning and inspection of your Euroterm SIMPLEX 20 P boiler.

Check the Heating System’s Pressure

At least every quarter, ensure that the system’s pressure is correct; it should be between 1bar and 2bar. Also check this in the summer, as the boiler uses radiator water (only in internal circulation) to heat domestic hot water. If the pressure is low, the boiler is equipped with a component that stops the production of heating or hot water.

Remember to use the filling tap, found under the appliance. Open it and check that the pressure gauge reaches 1.5bar, then close it.

Effective Temperature Settings

To make the most of your Euroterm SIMPLEX 20 P boiler, it’s crucial to understand how to effectively adjust the temperatures. This not only optimizes home comfort but also helps prevent limescale accumulation.

Focus on Temperature Adjustment:

• Heating Temperature: Be careful to adjust the radiator temperature, not the ambient temperature.
• DHW Temperature: A lower DHW temperature reduces the risk of calcification.

DIY: Replacement of Shower Filters and Heads

Discover how to easily replace the aerator filters and shower heads in your shower to prevent limescale buildup. This simple maintenance can avoid overheating problems and difficulties in removing filters, ensuring the proper functioning of the Euroterm SIMPLEX 20 P boiler.

Boiler Safety During the Holidays

It’s crucial to take some precautions with your Euroterm SIMPLEX 20 P boiler before leaving for the holidays to prevent accidents and problems. This also applies to the latest generation boilers.

Preventive actions:

• Close the main water tap to avoid unexpected leaks.
• Shut off the gas to increase the safety of your home.
• Turn off the heat generator to limit unnecessary energy consumption.

Once you return, reactivate the settings by following the steps in reverse. You might need to restart the heat generator to cancel the shutdown errors.

With these simple steps, you can enjoy your vacation without worries, knowing that your boiler is safe and well managed.

Boiler Usage Warnings

To ensure the safety, efficiency, and performance of the SIMPLEX 20 P appliance, annual maintenance is crucial. It is highly discouraged to intervene inside the boiler without adequate technical skills. In case of anomalies or malfunctions, it is important to always consult a qualified technician. Annual maintenance by specialized personnel is essential for the safety and continuous functioning of the appliance.

Warnings for the Use of Electric Energy

For safe use of the boiler, it is important to follow some basic rules:

• Do not touch the appliance with wet or damp body parts and avoid doing so barefoot.
• Avoid pulling electrical cords and ensure they are not damaged.
• Do not expose the appliance to adverse weather conditions such as rain or direct sunlight, unless otherwise indicated.
• In case of damage to the electric cord, immediately turn off the appliance and contact a qualified technician for replacement.

Additionally, ensure that the boiler is installed, put into operation, and maintained by authorized technicians to guarantee the validity of the warranty and safety in use. Improper use of the appliance and any unauthorized alterations could pose safety risks.

Safety Actions in Case of Gas Detection

If a gas odor is detected, it is fundamental to adopt these precautionary measures:

• Do not use electrical appliances, including phones, that might generate sparks.
• Immediately open doors and windows to facilitate air exchange.
• Stop the gas supply by closing the taps.
• Immediately request the intervention of a specialized technician.

It is important to use the SIMPLEX 20 P boiler exclusively for the purposes for which it is designed, avoiding improper uses that can be dangerous. Ensure that any intervention on the boiler is carried out by qualified personnel to prevent accidents and maintain the warranty.

Guide to Components and Spare Parts

This section is dedicated to providing a complete overview of the various components and spare parts available for the SIMPLEX 20 P boiler. You will find detailed information on each part, from its main function to advice on when it might need to be replaced.

Maintenance of the Giannoni Type F Diverter Valve

Essential for the Euroterm SIMPLEX 20 P boiler, the Giannoni Type F Diverter Valve ensures the correct transition to domestic hot water. Given its vulnerability to dirt and sludge, it is important to install a magnetic dirt separator filter and maintain good cleanliness of aerators and showerheads, especially in environments with limited water pressure, to ensure its effectiveness and prevent operational problems.

Functionality of the Primary Heat Exchanger

The copper primary heat exchanger of the Euroterm SIMPLEX 20 P boiler plays a vital role in the thermal efficiency of the system. Thanks to its breadth, it guarantees excellent heat exchange.

The overtemperature sensor is positioned to detect and prevent overheating risks, avoiding issues like internal boiling.

Blockages in the pipes can cause problems with this component, leading to noise and reduced water flow. Preventive maintenance, including the installation of a Magnetic Filter, can help reduce such risks.

Maintenance of the Anti-Refoulaire Flue Cap

The anti-refoulaire flue cap is a vital component to ensure the safety of the Euroterm SIMPLEX 20 P boiler, preventing the return of toxic fumes. Made with durable materials such as sheet metal and rivets, it requires regular checks to prevent wear and corrosion.

It is essential to periodically check the condition of the rivets and, if worn, proceed with their replacement with quality screws. This maintenance prevents potential safety risks.

The cap, specific to each boiler model, should also be checked for condensation, a sign of inadequate flue draft. Accurate maintenance ensures the proper functioning of your Euroterm SIMPLEX 20 P boiler.

Maintenance of CIMM CP387 Expansion Vessel

The CIMM CP387 expansion vessel, essential for pressure stability in the Euroterm SIMPLEX 20 P boiler, stands out for its robust design in red color and 3/4-inch connection.

Preventive maintenance of this component is crucial to avoid pressure imbalances that can compromise the heating system.

Frequent issues include the rupture of the internal membrane and damage to the external shell, critical elements that require regular inspection to ensure the proper functioning of the boiler.

3/8 Automatic Air Purger

The 3/8 automatic air purger is a fundamental component in the Euroterm SIMPLEX 20 P boiler to ensure the elimination of air in the heating system. This small but essential device plays a critical role in maintaining the efficiency of the heating system.

Despite its low cost, this component is vital to ensure that there is no trapped air in the radiator system, especially for aluminum ones, where the presence of air can be a frequent problem, particularly after long periods of inactivity like during the summer.

Checking the functionality and replacing the air purger is always advised to prevent circulation problems at the beginning of the heating season. Its efficiency is crucial for the proper operation of the entire domestic heating system.

Grundfos UPS15/60 Pump Performance

Enhance the performance of your SIMPLEX 20 P boiler with the Grundfos UPS15/60 pump, designed for superior water circulation. Choose from three speed levels to maximize efficiency, with the third speed recommended for the best performance, except in the presence of circulation noises.

The pump, generally easy to install by a professional, may present difficulties in removing the stator from the cast iron head after a long period of use.

Technical specifications of the Grundfos UPS15/60:

• Power Supply: 2.5 μF 230V – 50Hz IP44 TF 95
• High Speed (III): 0.38 A – 85 W
• Medium Speed (II): 0.30 A – 65 W
• Low Speed (I): 0.21 A – 45 W

Suitable also as a replacement for models UPS 15-50, 15-60, 25-50, 25-60, 15-65, 25-65.

Safety systems are fundamental components in the design and operation of boilers. They ensure the correct functioning of the device, preventing dangerous situations for users and the environment.

The SIMPLEX 20 P boiler therefore includes:

The Safety Thermostat, located on the heating supply, intervenes by blocking the gas flow to the burner in case of overheating of the water in the primary circuit. It is essential to never deactivate this safety device.

The Flame Ionization Detector ensures safety by shutting down the boiler in case of gas absence or incomplete ignition of the main burner.

The Antifreeze Device activates the burner to maintain the water temperature above 5 °C, preventing freezing of the system.

The Hydraulic Safety Valve, set at 3 bar, protects the heating circuit. It is advisable to connect it to a siphoned drain and not use it to empty the circuit.

Possible Improvement Works

The Euroterm SIMPLEX 20 P boiler requires special attention to the flue pipes. It is essential to have a qualified technician ensure that the pipes are in optimal condition and comply with regulations.

Suitable Flue Pipes

The flue pipes for the Euroterm SIMPLEX 20 P boiler must comply with safety standards and be equipped with adequate seals to ensure efficiency and safety.

Recent stainless steel pipes with seals are the recommended option. In contrast, corrugated aluminum pipes or white enamel pipes without seals are not up to standard. It is essential to regularly check the quality and condition of the flue pipes.

For further information and specific advice, it is recommended to consult a qualified technician and adhere to current regulations.

Integrating a Gas Tap with a Test Well

Not always does the meter provide a connection for instrumental tightness testing. A useful tip is to replace the gas tap under the boiler with a valve with a well equipped with an instrumental take-off, essential for the tightness test of the system. This element can be crucial in case of inspections and safety checks and certainly facilitates the maintenance of the SIMPLEX 20 P boiler.

In fact, during the maintenance of the appliance, it is mandatory to perform a suitable test like UNI 11137:2019 that verifies the correct tightness of the gas system.

Flushing the Heating System

Flushing the heating system is crucial to prevent clogging of the primary exchanger of the Euroterm SIMPLEX 20 P boiler. Over time, especially in cast iron or aluminum systems, a metallic sludge can form that can clog the narrow passages of the exchanger.

After flushing the system, it is highly recommended to install a magnetic sludge filter on the Euroterm SIMPLEX 20 P boiler. This filter plays an essential role in protecting the exchanger from the buildup of dirt and debris, ensuring greater efficiency and longevity of the heating system.

Additional improvements can include the installation of an advanced thermostat with relay function. This device allows for more effective management of heating hours, helping to optimize energy consumption.

Suggested Accessories

You might consider a range of accessories that would enhance the functionality of the SIMPLEX 20 P boiler.

Magnetic Filter for Heating

Considered the best accessory to block the entry of dust and debris from the heating system into the device.

The decision to install a magnetic filter on the heating return line is an important one to maintain the effectiveness and reliability of the boiler. This component is essential for filtering debris that could otherwise accumulate and hinder the proper functioning of the boiler, particularly regarding the primary exchanger and the diverter valve. It’s important to choose a high-quality filter and ensure it is correctly installed to fully benefit from its advantages.

Choosing a Polyphosphate Doser

For hard waters exceeding 20 French degrees, we recommend the use of a polyphosphate doser for the Euroterm SIMPLEX 20 P boiler.

These devices mix polyphosphates, either in powder or liquid form, with the incoming water, minimizing limescale formation in the Euroterm SIMPLEX 20 P boiler. The choice of the right doser depends on the specific needs of the system and the type of water.

Polyphosphates are primarily available in two forms:

• Powder Polyphosphates
• Liquid Polyphosphates

The selection of the polyphosphate influences the type of mixing device required.

Customize Home Climate with a Thermostat

Get the most out of your Euroterm SIMPLEX 20 P boiler with a customizable room thermostat or programmable thermostat.

These solutions allow you to create the ideal home environment by regulating the temperature according to your specific needs. Choose a programmable thermostat to set varied schedules, adapting the home climate to your daily and weekly rhythms and improving energy efficiency.

Among the available models, you will find:

• Daily Programmable Thermostats
• Weekly Programmable Thermostats
• Smart Thermostats with Smart Functions

The ideal choice should respond to your preferences and the technical characteristics of your Euroterm SIMPLEX 20 P boiler.

Daily Environmental Thermostat for Seniors

The daily environmental thermostat is particularly suitable for seniors, offering simple and immediate regulation of home temperature.

This device is ideal for those who desire an intuitive and uncomplicated control. Its daily programming allows for easy temperature adjustment to daily needs, making it particularly suitable for those who require a simple and reliable solution.

• Simple and clear user interface
• Easy temperature regulation
• Compliant with energy efficiency regulations

The daily thermostat is an economical and functional solution, ideal for those needing direct and easy heating control.

Weekly Programmable Thermostat

For advanced and personalized home temperature management, the weekly programmable thermostat is an excellent choice.

This device allows for setting different temperatures for various days of the week, perfectly adapting to different weekly routines. It is ideal for those who need detailed heating control, with the ability to set lower temperatures on days when the home is empty and higher when it is occupied.

Key features of the weekly programmable thermostat include:

• Flexible programming for each day of the week
• Advanced energy-saving functions
• Intuitive user interface for easy programming

A weekly programmable thermostat is perfect for those seeking a balance between comfort, convenience, and energy efficiency, providing precise control of the home climate.

Advanced New Generation Thermostats

New generation advanced thermostats offer cutting-edge technologies for optimal home climate control.

These devices stand out for their learning capability and adaptation to user habits, automatically adjusting the temperature based on daily and seasonal patterns. With features like remote control via smartphone and integration with home automation systems, they offer an unprecedented level of convenience and energy efficiency.

Salient features of these thermostats include:

• Wi-Fi connectivity and remote control
• Integration with voice assistants and smart home systems
• Learning algorithms for automatic temperature optimization

For those seeking the utmost efficiency, convenience, and personalization in home temperature control, an advanced new generation thermostat is the ideal choice.

Useful Tips and FAQ

We have gathered a series of useful tips and answers to the most frequent questions to help you maximize the efficiency and lifespan of your Euroterm SIMPLEX 20 P boiler. Find out everything you need to know for its best management.

The Water is Too Hot

If the water from your Euroterm SIMPLEX 20 P boiler is too hot, it may be due to reduced water flow, especially if you are on the upper floors of a building. Check that the tap filters and showerhead holes are clean. If the problem persists, consider cleaning the secondary exchanger or consult a plumber to evaluate the installation of a pressure booster system.

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