Radiant R1K 34 User Manual – Condensing Boiler Instructions and Parts

The Radiant R1K 34 condensing boiler is a condensing boiler for heating only. It uses condensing technology to recover heat from the flue gases and achieve higher efficiencies, therefore requiring a discharge due to the high production of condensate.

This boiler is specific for heating only production.

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.

Winter Boiler Maintenance: Complete Guide

• Pressure Check: Ensure that your Radiant R1K 34 boiler’s pressure gauge shows adequate pressure.
• Thermostat Maintenance: Regularly check the thermostat batteries to avoid malfunctions during the colder months.
• Heating System Pressure: Check that the pressure is maintained between 1 and 1.5 bar for optimal operation.
• Professional Support: For thorough maintenance and cleaning of your Radiant R1K 34 boiler, always contact qualified personnel.

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.

Verify Temperatures

On the Radiant R1K 34 boiler, it is possible to adjust the heating temperature.

Attention to temperature adjustment:

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

We suggest setting the temperature according to your needs and the time of year.

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 34 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.

Advanced Technology and Safety

The R1K 34 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 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 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.

Maintenance Tips

Regular maintenance of the R1K 34 boiler is crucial to preserve its efficiency and safety. It is strongly advised against for inexperienced users to attempt any technical intervention on the boiler. Any doubts or anomalies in operation must be immediately reported to an expert technician. Annual maintenance, carried out by qualified technicians, is fundamental for the correct operation of the appliance.

Safety Regulations for Electric Energy

Safety in the use of the R1K 34 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 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 condensing boiler, you will find all the operating information. You can set the heating temperatures by pressing the + and – buttons next to the Radiator symbol. After pressing, the boiler displays the set temperature for a few seconds and then returns to the primary exchanger temperature.

Indeed, the boiler shows you the outgoing temperature, which can be interpreted as the internal temperature of the boiler and in winter as the actual temperature of the radiators.

Using the + and – buttons, you can choose the desired temperatures for heating. We suggest:

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

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 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 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 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 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 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 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 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 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.

Customize Home Climate with a Thermostat

Get the most out of your Radiant R1K 34 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 boiler.

Daily Programmable Thermostat

The daily programmable thermostat is an effective solution for daily temperature control in your home.

This device allows you to set the desired temperature for each individual day, enabling flexible management adaptable to your daily routines. It is ideal for those seeking simple yet precise control of home heating, with the ability to adjust settings according to variations in their daily schedule.

Typical features of a daily programmable thermostat include:

• Easy and intuitive programming
• Precise temperature adjustment
• Energy-saving functions

This type of thermostat is an optimal choice for those who want to combine comfort and energy efficiency without the need for complex weekly programming.

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 34

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 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 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 pre-equipped for a tension-free connection with an Advanced Thermostat or Remote Control. The functionalities offered include:

• Control of domestic hot water temperature: Useful for R1K 34 boilers installed in less accessible locations.
• Adjustment of radiator temperature: An advanced Opentherm chronothermostat allows communication of the desired radiator temperatures to the boiler.
• Time scheduling for water heating: Beneficial for boilers with storage tanks, helping to reduce boiler maintenance costs, like gas.
• Error Resolution: Through Opentherm 2 or with devices 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
• Technical Manual for Radiant Boiler R1K 34 rev. 06/2015
• Technical Manual for Radiant Boiler R1K 34 rev. 2015
• Technical Manual for Radiant Boiler R1K 34 rev. 2016