Instructions for Boiler Radiant R1K 100 – Technical and Practical Manual in PDF

The Radiant R1K 100 condensing boiler, exclusively for heating, employs advanced technologies to maximize thermal efficiency. Thanks to condensation, it utilizes the latent heat of the flue gases, requiring a discharge for the produced condensate.

Designed solely for heating, this boiler is the perfect choice for those seeking high performance in terms of domestic heating.

Common Procedures

To maintain the safety, efficiency, reliability, and performance characteristics that distinguish the device, it is necessary to perform maintenance annually. Annual maintenance is essential for safety and continuity of operation.

Annually or at the Start of the Winter Season

• Regularly check the pressure shown by the pressure gauge.
• Check the batteries of the room thermostat.
• Ensure that the heating system’s pressure is between 1 and 1.5 bar.
• Contact qualified personnel for maintenance and cleaning.

Managing Pressure in the Heating System

Checking the heating system’s pressure every quarter is crucial to ensure it remains between 1bar and 2bar. This check is also fundamental in summer, as the radiator water is used for sanitary water heating. If the pressure drops too low, the boiler may cease to operate.

To adjust the pressure, locate the filling tap under the appliance, usually green, open it until the pressure gauge reaches 1.5bar, then close it.

Suggested Temperatures

The Radiant R1K 100 boiler allows you to produce the desired temperature for heating. You can adjust the temperatures through the control panel.

Attention to temperature adjustment:

• The heating temperature adjustment refers to the radiator temperature and not the ambient temperature.

A correct temperature setting will help you maintain optimal comfort at home.

Preparing Your Boiler for the Holidays

Before leaving for the holidays, it’s essential to take precautions to ensure the safety and efficiency of your Radiant R1K 100 boiler. Even the latest models are not immune to possible leaks.

Here are some recommended measures:

• Close the domestic hot water supply valve to prevent possible water leaks.
• Shut off the gas supply to prevent safety issues.
• Turn off the heat generator to reduce energy consumption and increase safety.

Upon your return, restore all these settings in the reverse order. You will likely need to rearm the heat generator to resolve any ignition errors caused by the shutdown.

These simple actions will allow you to enjoy your holidays with greater peace of mind, knowing that your home and boiler are safe.

The Electronics

Regarding the electronics of this boiler, the control board is provided by NORDGAS, a trusted partner of Radiant for many years. The NORDGAS board is cutting-edge in terms of essential modern boiler systems. Notably, it includes a daily auto-reset system for the board memory, an air venting cycle that starts after refilling the boiler following a water shortage error, and control of thermal shock in heating. Radiant’s board features an exceptional user interface with essential buttons for operation, differentiating it from other boilers with numerous buttons. Error control is precise and easy to read, allowing technicians to receive accurate error information over the phone for an initial diagnosis.

Error Control

The R1K 100 boiler signals all errors through a flashing code on the display, with the main ones being:

• Error 01: No flame, which can occur if the gas tap is closed or if the meter has been changed. Press the button. In all other cases, if it does not restart, call a technician.
• Error 03: Flue side thermal fuse tripped. Press the button. If it does not restart, call a technician.
• Error 04: No water in the system. Refill the system via the black cylindrical tap under the boiler, keep an eye on the pressure gauge above the display, and close the refill tap when the pressure reaches 1.2 or 1.5 bar. The error resets itself, followed by an approximately 2-minute venting procedure. Please wait.
• Error 18: Insufficient circulation. This error may be caused by particularly dirty magnetic filters. Check the magnetic filter at the boiler inlet with a technician to restore the circulator flow rate.

Notifications

These refer not to errors but to functions currently in operation:

• F08 Anti-freeze function for heating active: If the boiler is external and reaches a very low temperature, this procedure activates to prevent the technical water from freezing. Please wait for the operation to complete.
• F33 System Venting Cycle: This usually happens during the reset of error E04. Once the Radiant R1K 100 boiler pressure is restored, it performs this function for about 2 minutes. Please wait for the operation to complete.
• FH Fast H20: The boiler is preparing to preheat the sanitary water. Please wait for the procedure to complete.

Advanced Technology for Reduced Noise and Consumption

The Radiant boiler series stands out for the use of advanced technologies that ensure silent operation, equivalent to a whisper of 55 decibels, and superior energy efficiency. The innovative noise reduction system, including a MOPLEX muffler and a cushioned front panel, significantly reduces decibel levels. In terms of consumption, innovative techniques for flame modulation and temperature control, along with the modulating WILO circulator, ensure high performance with contained energy consumption.

Boiler Usage Warnings

To ensure the safety, efficiency, and performance of the R1K 100 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.

Procedure in Case of Gas Leak

In the event of a suspected gas leak, it is essential to follow these instructions to ensure safety:

• Avoid operating electrical switches or devices that may create sparks.
• Open doors and windows to ventilate the area and disperse the gas.
• Immediately close the gas taps to prevent further leakage.
• Contact a qualified technician without delay for emergency intervention.

The R1K 100 boiler must be used only as intended: to heat water without bringing it to a boil. Any other use is improper and dangerous. Moreover, installation and maintenance must be carried out exclusively by authorized personnel to ensure safety and regulatory compliance.

Index of Components and Spare Parts

Use this section as an index to navigate through the different components and spare parts of the R1K 100 boiler. You will find clear descriptions and practical advice for each part, which will help you manage the maintenance of your appliance in the best possible way.

Temperature Control

Take advantage of the control panel of your Radiant R1K 100 condensing boiler for precise temperature control. Easily set the desired heat using the + and – buttons near the Radiator symbol. The boiler will briefly show the set temperature, then return to displaying the primary exchanger temperature.

The displayed temperature is the outgoing water temperature, which in winter indicates the real temperature of your radiators.

Using the + and – buttons, you can adjust the heat to your liking. Here are some recommendations:

• Set between 25°C and 38°C for floor heating systems.
• Adjust between 55°C and 65°C for aluminum or steel radiators.
• Select between 45°C and 60°C for cast iron radiators.

Technological Innovation: The Modulating Pump for Boilers

The latest generation modulating pump, with adjustable speed from 0 to 100%, represents a qualitative leap in the efficiency of modern boilers. Managed by a sophisticated electronic system with a dedicated control connector, this pump enables optimization of energy consumption and reduction of management costs. Its ability to dynamically adapt to the system’s needs not only ensures optimal performance but is also a fundamental requirement in new installations, highlighting the importance of this technology for a more sustainable and economical future.

Automatic Plastic Air Purger

The plastic automatic air purger, used as an insert in the purging housing in the pump manifold, is a key component in the Radiant R1K 100 boiler. This small element plays a vital role in ensuring the efficiency of the heating system by eliminating air from the system.

Made of durable plastic, this air purger is designed to easily fit into the dedicated housing in the pump manifold. Its use is particularly recommended to prevent air accumulation in the boiler’s hydraulic circuitry, especially in systems with a lot of aluminum where this problem is more frequent after periods of inactivity (summer).

Regularly checking and replacing the air purger and the system pressure is essential for maintaining uninterrupted operation at the start of the heating season. Its functionality is crucial for the proper operation of the entire domestic heating system.

3/8 Automatic Air Purger

The 3/8 automatic air purger is a fundamental component in the Radiant R1K 100 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.

Safety Systems according to the ErP Directive

The construction and installation of boilers in Europe are strictly regulated by a series of European standards, aimed at ensuring safety, energy efficiency, and reduction of environmental impact.

One of the main reference regulations is the ErP (Energy-related Products) Directive, which imposes stringent requirements in terms of energy efficiency and emissions for all energy-related products, including boilers. This directive is accompanied by specific UNI EN standards for each type of boiler, detailing the technical and safety standards to be respected.

The R1K 100 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 condensing boiler Radiant R1K 100 requires special attention to the correct installation of the flue pipe. Especially in horizontal sections, condensation can form, compromising the functionality of the fan. It is not uncommon to see installations where the flue pipe (especially if corrugated) forms a siphon, causing the boiler to produce very loud noises. It is essential to have a qualified technician ensure that the pipes are in optimal condition.

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 R1K 100 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 Radiant R1K 100 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 Radiant R1K 100 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.

Accessory Guide

Elevate the performance of your R1K 100 boiler with our selection of essential accessories, we recommend:

• New Generation Programmable Thermostat: Manage ambient temperature with precision and ease, thanks to intelligent programming and remote control.
• Magnetic Filter Dirt Separator: Protects your heating system from harmful residues, ensuring greater longevity and efficiency.

Magnetic Filter for Heating

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

The use of the magnetic filter in the heating return line is a strategic choice to protect the boiler. This device uniquely captures and isolates both magnetic and non-magnetic debris that could otherwise accumulate and cause malfunctions. Keeping the filter clean and functional is essential to ensure maximum efficiency of the boiler and to prevent common issues such as temperature increase and excessive stress on the diverter valve.

Customize Home Climate with a Thermostat

Get the most out of your Radiant R1K 100 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 Radiant R1K 100 boiler.

Daily Environmental Thermostat: Regulatory Compliance and Economy

The daily environmental thermostat is the ideal solution for complying with regulations requiring at least two temperature levels within 24 hours, combining efficiency and simplicity.

This device ensures the ability to set different temperature levels throughout the day, perfectly adapting to various needs and contributing to energy savings. Its ease of use makes it suitable for all ages, including seniors.

• Flexible programming and compliance with regulations
• Easy to use for all age groups
• Affordable cost and great added value

An economical and functional option for those looking for effective home temperature control without complexity.

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.

INFO MENU DISPLAY DATA

To view the boiler data from info menu you just have to press the INFO key. The info code will be displayed on the left side of the screen and its relative value will be displayed on the centre of the screen.
Use keys ‘ + ’ and ‘ – ’ of the heating circuit to scroll through the list of displayed data. To exit display mode press the INFO ‘ i ’ key.

Anomaly Reporting Codes R1K 100

To display the last 5 anomaly reporting codes, from the most recent in chronological order, activate OFF mode using the central button and hold down the INFO button for 5 seconds. To scroll through the list of stored anomalies, use the PLUS and MINUS buttons of the heating system. To reset the anomaly history, press the RESET button. To exit the display environment, press the INFO button.

Frequent Questions

To help you resolve doubts and questions about your Radiant R1K 100 boiler model, we have prepared a list of Q&A covering the most common issues. Find the answers you are looking for optimal use of your appliance.

Loud Noises During Operation

If your Radiant R1K 100 boiler makes loud noises during operation, first check the system pressure. Too low a pressure can be the cause. Otherwise, in this condensing boiler, it could occur due to lack of maintenance.

Indeed, the heat exchanger tends to slightly oxidize during operation and over time a large amount of dirt can accumulate in the condensate siphon. Regular maintenance is essential to reduce the risk of noises or machine shutdowns.

Boiler Compatibility with Opentherm

YES: The boiler’s thermostat connections are configured for a non-powered interface, allowing connection to a Smart Thermostat or Remote Control. The possibilities offered include:

• Adjustment of domestic hot water temperature: Particularly beneficial when the R1K 100 boiler is located in less accessible places like the attic or an external technical room.
• Adjustment of radiator temperature: The advanced Opentherm chronothermostat allows communication with the boiler to regulate radiator temperatures in addition to room temperature.
• Time scheduling for domestic hot water: Ideal for boilers with storage tanks, it enables optimization of boiler maintenance costs, such as gas consumption.
• Diagnostics and Error Management: With the Opentherm 2 protocol or via a specific remote control from Radiant.
• etc…

Pressing the buttons to adjust the heating, the temperature does not change.

The button panel is sensitive to repeated presses after years of operation. Often, the malfunction of the adjustment buttons is due to the absence of a thermostat, which has led to the exclusive use of the boiler’s buttons.

In light of this, it is suggested to install a new control board to restore the correct functioning of the button panel, but also to integrate a thermostat to continue adjusting the heating from another, more reliable, and less expensive device.

Downloadable Manuals

• Technical Manual for Radiant Boiler R1K 100