Instructions for Boiler Radiant R1K 34/B – Technical and Practical Manual in PDF

With the Radiant R1K 34/B condensing boiler, you achieve both heating and domestic hot water efficiently with the aid of an external boiler. The advanced condensing technology improves energy yield, requiring a drain for the condensate.

The innovative design of this boiler makes it compatible with solar systems, offering an energy alternative even when the solar system cannot provide sufficient heat.

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.

Essential Tips for Your Boiler in Winter

• Pressure Monitoring: Check your Radiant R1K 34/B boiler’s pressure gauge to ensure correct pressure.
• Thermostat Batteries: Replace the batteries of the room thermostat to ensure maximum efficiency.
• Heating Pressure Check: Keep the heating system pressure between 1 and 1.5 bar for effective heating.
• Qualified Assistance: Entrust the maintenance and cleaning of your Radiant R1K 34/B boiler to expert technicians.

Heating System Pressure Control

It’s important to check quarterly that the system pressure is maintained between 1bar and 2bar. This check is also necessary in summer, as the boiler uses radiator water to heat sanitary water. Too low a pressure can interrupt the production of heating or hot water.

Use the filling tap, located under the appliance, to adjust the pressure. Open it until the pressure reaches 1.5bar, then close it.

Suggested Temperatures

The Radiant R1K 34/B boiler can always produce the temperature you want for heating according to your needs. You can adjust the temperatures via the control panel, but we suggest setting the hot water temperature (DHW) to the minimum necessary due to limescale and domestic hot water (DHW) considerations.

Attention to temperature settings:

• The heating temperature setting refers to the radiator temperature, not the ambient temperature.
• The domestic hot water temperature setting should be kept as low as possible to avoid calcification inside the secondary heat exchanger.

Regular Maintenance for Shower Heads and Shower Aerator Filters

Periodic maintenance of shower heads and aerator filters is essential to prevent limescale buildup. The obstruction caused by limescale makes it difficult to remove the aerators and affects water temperature, causing intermittent operation of the Radiant R1K 34/B boiler. Follow our guide to replace these components when necessary.

Boiler Safety During the Holidays

It’s crucial to take some precautions with your Radiant R1K 34/B 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.

Advanced Technology and Safety

The R1K 34/B boiler, with its cutting-edge technology provided by NORDGAS, ensures a safe and reliable user experience. Every aspect of the electronics is designed to maximize efficiency and safety, from the daily auto-reset system to thermal shock management and error control.

Advanced Error Management

The R1K 34/B boiler uses a system of error codes for easy identification and resolution of problems. Errors are communicated through a clear display, allowing users to quickly understand the nature of the problem. Moreover, advanced features like the anti-freeze protection and the FAST-H2O sanitary water preheating system ensure maximum efficiency and comfort in every situation.

• 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 34/B 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.

Comfort and Sustainability in Noise and Consumption

The Radiant boiler series is designed with user comfort and environmental sustainability in mind. Their ultra-quiet operation, with noise levels of only 55 decibels, ensures unparalleled tranquility at home. From a sustainability perspective, these boilers excel in reducing gas and electricity consumption, with their 9 flame modulations for precise temperature control and the use of a high-efficiency modulating circulator. This combination of technologies makes Radiant’s boilers an ideal choice for those seeking an eco-friendly and comfortable option.

Boiler Safety and Maintenance

It is important to subject the R1K 34/B boiler to annual maintenance to ensure its efficiency and safety. Interventions on the boiler by unqualified people are strongly discouraged, as they can compromise the safety of the appliance. For any problem or anomaly, it is essential to turn to an expert technician. Remember that periodic maintenance by professionals is crucial for the longevity and safety of the appliance.

Safety Regulations for Electric Energy

Safety in the use of the R1K 34/B boiler requires adherence to specific rules:

• Avoid contact with the appliance in the presence of moisture or while barefoot.
• Do not force or pull electrical cords, to prevent risks of short circuit or damage.
• Protect the appliance from atmospheric agents if not specifically indicated for outdoor use.
• In case of faults in the cord, stop using and rely on a specialized technician for repairs.

It is also important that any installation, initial ignition, and maintenance is carried out by qualified and authorized technicians to ensure proper functioning and compliance with the warranty. Use not in accordance with the instructions can be dangerous and invalidate the manufacturer’s liability.

What to Do in the Presence of Gas Odor

In situations of potential gas leakage, it is crucial to follow these guidelines:

• Avoid using any electrical device that could trigger sparks, including the phone.
• Immediately ventilate the environment by opening doors and windows.
• Close the gas taps to stop the leakage.
• Promptly call for urgent intervention by expert and qualified personnel.

The boiler should be used exclusively according to the manufacturer’s instructions and for heating water to safe temperatures. Improper use can cause serious damage. Ensure that installation and maintenance are entrusted to authorized technicians to avoid risks and ensure compliance with safety regulations.

Information on Components and Spare Parts

Here is an informative resource that covers a wide range of components and spare parts for the R1K 34/B boiler. Each element is described in detail to help you better understand its role within the appliance and how to maintain it optimally.

Temperature Adjustment

On the control panel of the Radiant R1K 34/B condensing boiler, you can find all the operational information. You can set the temperatures for heating or hot water by pressing the + and – buttons next to their respective symbols: Faucet and Radiator. After pressing, the boiler displays the set temperature for only a few seconds.

Normally, the boiler shows the flow temperature, to be interpreted as the internal temperature of the boiler. As a result, you will see the temperature rise even in summer when the Radiant R1K 34/B boiler produces hot water, while in winter it can be interpreted as the current temperature of the radiators.

Using the + and – buttons at the top for heating and at the bottom for domestic hot water, you can choose the desired temperatures for heating. We suggest:

• From 25°C to 38°C if you have underfloor heating.
• From 55°C to 65°C if you have radiators made of aluminum or steel.
• From 45°C to 60°C if you have cast iron radiators.

For domestic hot water, you can choose the temperature using the + and – buttons at the bottom. We suggest a temperature between 38 and 45°C.

The general advice for the temperature of domestic hot water is to keep it as low as possible, especially if your water supply provides very hard water (over 30°F).

Boiler Filling Tap of R1K 34/B

The filling tap is an essential component for maintaining optimal pressure inside the R1K 34/B boiler. This tap, usually located at the bottom of the boiler (as shown in the image), should be opened when the system’s pressure drops below 1 bar.

To refill the system, slowly open the tap until the pressure reaches the recommended level, usually around 1.5 bar. It is crucial to remember to close the tap after refilling to avoid overpressure that could damage the boiler or the system.

ALCO-CORP Three-Way Valve Detail

The ALCO CORP 96032LA ATVA-03 diverter valve plays a fundamental role in balancing heating and domestic hot water production. With its two end-of-travel switches, it regulates the thermal flow for both functions.

Operating defects can lead to:

• Exclusive production of domestic hot water, lack of heating.
• Active heating in summer, when it’s not needed.
• Limitation to only heating, without domestic hot water production.

These issues can compromise living comfort and system efficiency. Regular maintenance is therefore essential to maintain optimal valve performance.

Durability and Efficiency of the 20-Liter Stainless Steel Boiler

The 20-liter stainless steel boiler, an integral part of the Radiant R1K 34/B boiler, has been developed to maximize efficiency in hot water production. Its internal coil ensures excellent heat exchange and uniform water heating.

To maintain these performances over time, regular maintenance is crucial, particularly the replacement of the sacrificial anode to prevent corrosion. Caring for this element is essential to ensure the longevity and efficiency of the boiler.

Neglecting to replace the anode could lead to premature deterioration of the boiler, with risks of leaks and inefficiencies. Therefore, it is important to adhere to the manufacturer’s maintenance recommendations and regularly monitor the condition of the anode.

Energy Saving with the Modulating Pump for Boilers

The introduction of variable speed modulating pumps in modern boilers is a revolution in terms of energy saving and cost reduction. These pumps, regulated by an advanced electronic system through a second connector, are capable of varying their speed from 0 to 100% according to the real needs, maximizing the efficiency of the system. Their use, mandatory in new boilers, demonstrates a commitment to solutions that combine excellent performance with care for the environment and household economy.

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 34/B 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 34/B 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 34/B 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 34/B 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 34/B 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 34/B 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 34/B 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

To optimize the functionality and efficiency of your R1K 34/B boiler, there are various accessories that we recommend considering:

• Programmable Thermostat: Regulates ambient temperature on a daily or weekly basis. The advanced new generation models also offer remote control and advanced programming.
• Magnetic Filter Dirt Separator: An essential device for keeping the hydraulic circuit clean, removing both magnetic and non-magnetic impurities and debris.

Magnetic Filter for Heating

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

The magnetic filter should be applied on the heating return line to the boiler, separating everything that could clog the boiler and cause temperature increases in the primary exchanger. The diverter valve is also less stressed, and the adoption of the magnetic filter could prevent its leakage.

Polyphosphate Dosing Pump

If the hardness of the tap water exceeds 20 French degrees, we suggest equipping the Radiant R1K 34/B boiler with a polyphosphate doser.

Polyphosphates, available in powder or liquid form, are mixed with the cold water entering the Radiant R1K 34/B boiler, significantly reducing limescale formation. These additives are essential for maintaining efficiency and extending the lifespan of the device and must be regularly replenished.

There are several models of polyphosphate dosers, the most common ones are:

• Powder Polyphosphates
• Liquid Polyphosphates

Each type of polyphosphate requires a specific system for mixing.

Customize Home Climate with a Thermostat

Get the most out of your Radiant R1K 34/B 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 34/B 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.

Magnesium Anode for Boiler

The magnesium anode is a critical component for combating corrosion in the Radiant R1K 34/B boiler’s accumulation tank. Its high reactivity helps to preserve the boiler’s metal parts from oxidation, enhancing durability and efficiency.

Periodic replacement of the magnesium anode is vital, and should be tailored based on the boiler’s use and water quality.

Issues Related to the Magnesium Anode

In certain cases, especially under the influence of strong electrical fields:

• The magnesium anode can degrade rapidly.
• Rapid degradation can cause excessive air release in the system, noticeable after periods of non-use.
• A sulfur odor may develop if the boiler remains inactive for several months.

Air-related problems usually subside after the first few weeks of maintenance. An aluminum anode for future maintenance may be considered for its longer lifespan.

Aluminum Anode

The aluminum anode, used in boilers such as the Radiant R1K 34/B, offers a longer lifespan compared to magnesium anodes. This flexible material allows for easy insertion and provides effective protection against corrosion.

The aluminum anode can last over 6 years, making it a cost-effective option for boiler maintenance.

Electronic Anode

The electronic anode is an advanced solution for corrosion protection in boilers like the Radiant R1K 34/B. Thanks to its electronic control system, it monitors and adjusts the protective action according to the water conditions.

This type of anode requires less maintenance compared to traditional anodes and ensures more effective and long-lasting protection.

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 34/B

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.

FAQ

Discover the answers to the most frequent questions about the Radiant R1K 34/B boiler model. This quick guide has been compiled to provide clear and direct information based on the common questions from our users.

Loud Noises During Operation

If your Radiant R1K 34/B 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.

Opentherm Protocol Support by the Boiler

YES: The boiler is equipped with non-powered thermostatic connections, compatible with Smart Thermostats or Remote Controls. This allows the use of advanced functions such as:

• Adjusting the domestic hot water temperature: Ideal for R1K 34/B boilers installed in hard-to-reach areas.
• Adjusting the radiator temperature: With the Opentherm chronothermostat, it is possible to adjust the radiator temperatures directly from the boiler.
• Setting operating times for domestic hot water: A feature that helps to reduce the maintenance costs of the boiler for models with storage tanks.
• Fault Management: Using the Opentherm 2 protocol or 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 34/B