Condensing Boiler Radiant R1K 18 Manual – Complete PDF Guide
The efficient Radiant R1K 18 condensing boiler is optimized for heating. Using condensation for heat recovery, it offers high energy efficiency and requires a drainage system for the condensate.
Ideal for environments that require heating only, this boiler represents an effective and sustainable solution.
Annual Maintenance
Annual checks are crucial to ensure optimal boiler performance, maintaining efficiency, safety, and reliability. These annual checks are fundamental to ensure the safety and ongoing effectiveness of the device.
Essential Tips for Your Boiler in Winter
- Pressure Monitoring: Check your Radiant R1K 18 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 18 boiler to expert technicians.
Maintaining Heating System Pressure
It’s essential to check the heating system’s pressure quarterly, ensuring it’s between 1bar and 2bar. This check should not be neglected even during the summer months, as the radiator water is used for hot water production. A drop in pressure can interrupt the boiler’s operation.
To adjust the pressure, use the filling tap under the appliance. Open it to bring the pressure to 1.5bar, then close it.
Effective Temperature Settings
To make the most of your Radiant R1K 18 boiler, it is essential to understand how to effectively regulate heating temperatures. This optimizes home comfort.
Focus on Temperature Adjustment:
- Heating Temperature: Be careful to adjust the radiator temperature, not the ambient temperature.
Boiler Safety During the Holidays
It’s crucial to take some precautions with your Radiant R1K 18 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 18 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 18 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 18 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.
Energy Efficiency and Quietness
Radiant has revolutionized energy efficiency with its boiler series, offering exceptional performance in terms of both gas and electricity consumption. These models, besides being extraordinarily quiet (about 55 decibels), boast reduced gas consumption, thanks to their 9 flame modulations and proportional temperature control. Electrical consumption is also minimized, thanks to the modulating WILO circulator and optimized standby consumption.
General Usage Information
To maintain the safety, efficiency, reliability, and performance characteristics that distinguish the device, it is necessary to perform annual maintenance. Annual maintenance is essential for the safety and continuous use of the R1K 18 device.
Safety Regulations for Electric Energy
Safety in the use of the R1K 18 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.
List of Components and Spare Parts
In this guide, you will discover everything there is to know about the different components and spare parts of the R1K 18 boiler: how to identify them, their specific function, and useful tips for maintenance and replacement.
Temperature Adjustment
On the control panel of the Radiant R1K 18 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.
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 18 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 18 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.
Important Safety Alert!
Regular replacement of the air purge valve in the R1K 18 boiler is crucial to prevent moisture from affecting the contacts underneath. There are several sensors in the underlying piping which, if exposed to moisture, could potentially trigger a household’s circuit breaker. Failing to maintain this component can lead to significant safety risks and operational issues. Always consult a qualified technician for maintenance and replacement.
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 18 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 18 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 18 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 18 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 18 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 R1K 18 boiler.
Magnetic Filter for Heating
Considered the best accessory to block the entry of dust and debris from the heating system into the device.
Installing the magnetic filter on the heating return line is a crucial step in ensuring the longevity of the boiler. This device effectively separates and retains any particles that could cause damage or inefficiencies in the device, including preventing blockage of the primary exchanger. Its presence also ensures less stress on the diverter valve, increasing its reliability and reducing the risk of malfunctions.
Thermostat and Programmable Thermostat
Maximize comfort and efficiency of your Radiant R1K 18 boiler by installing a room thermostat or programmable thermostat.
These smart devices allow you to customize your home’s temperature, ensuring a pleasant environment and reducing energy consumption. Particularly, programmable thermostats allow you to set different temperature settings for each day of the week or specific times of the day.
Available models include:
- Daily Programmable Thermostats
- Weekly Programmable Thermostats
- Smart Thermostats with Remote Control
Choose the model that best meets the needs of your home and your Radiant R1K 18 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.
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.
| Info Code | Description |
| D0 | domestic Circuit Probe Temperature |
| D1 | external Probe Temperature |
| D2 | fan Speed |
| D3 | bottom Area Probe Temperature [if Area Board Installed] |
| D4 | return Probe Temperature |
| D5 | solar Collector Temperature [if Solar Board Installed] (Scs) |
| D6 | solar Boiler Temperature (Bottom) [if Solar Board Installed] (Sbsi) |
| D7 | solar Boiler Temperature (Top) [if Solar Board Installed] (Sbss) |
| D8 | solar Collector Probe Temperature 2 [if Solar Board Installed] (Scs2) |
| D9 | extra Solar Boiler Temperature [if Solar Board Installed] (Sbs3) |
Anomaly Reporting Codes R1K 18
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.
| Anomaly Code | Possible Cause | Remedy | Reset |
|---|---|---|---|
| E01 | Flame lock without flame ignition |
| Manual reset (Press the reset button) |
| E02 | Safety thermostat (95°C) |
| Manual reset (Press the reset button) |
| E03 | Safety thermal fuse for fumes (102°C) |
| Manual reset (Press the reset button) |
| E04 | Water shortage in the system |
| Automatic |
| E05 | Heating sensor |
| Automatic |
| E06 | Sanitary sensor |
| Automatic |
| E15 | Return sensor |
| Automatic |
| E16 | Fan |
| Automatic |
| E18 | Insufficient circulation |
| Automatic |
| E21 | Generic internal board error | Incorrect signal recognition by the microprocessor of the modulation board; If the modulation board does not reset the error automatically, replace it | Automatic |
| E22 | Parameter programming request | Memory loss of the microprocessor; Reprogram parameters | Manual reset (Remove power) |
| E35 | Parasitic flame |
| Manual reset (Press the reset button) |
| E40 | Power supply voltage | Power supply voltage out of operating range (below 160 volts); Check the electrical supply network (The error deactivates automatically as soon as the power supply voltage returns within the required limits) | Automatic |
FAQ
Discover the answers to the most frequent questions about the Radiant R1K 18 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 18 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 18 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.
