JNOD BK Series High-power Open-Vented Electric Boiler
The BK series high-power oepn-vented electric boilers provides efficient and reliable space heating without the need for fossil fuels. They offer power outputs 40 kw & 52 kw with CE certification.
They can supply central heating and domestic hot water when connected to a DHW tank and an expansion vessel. They can also serve as a backup heating source for air source heat pumps in extremely cold regions.
Open-vented electric boilers are designed for compatibility with external circulation pumps and DHW tanks, as they do not contain built-in components. This design results in a more compact boiler and flexble installation.
Compact Design
Near Silent Operation
Safe Protection
Constant Temperature
Open-Vented Single Heating for Constant-temperature Heating
Zero-Flue Electric Heating
This electric heating system eliminates gas pipes and flues. Installers save up to 40% on installation time and costs.
Open-Vented Hydronic Compatibility
The system operates perfectly inside traditional low-pressure open-vented water networks. It ensures stable, reliable water circulation.
98% Heating Efficiency
High heating efficiency ratings help your business and clients qualify easily for regional green energy financial incentives.
Technical Features and Applications
Core Performance Features
Compact Footprint: The sleek, wall-hung frame saves valuable room and allows for flexible installation.
Patented Heating Element: Equipped with a pioneering cast aluminum heating element to ensure top-tier energy efficiency and long-lige.
Integrated Safety System: Features dual dry-heating prevention, automatic anti-freezing, and intelligent error diagnosis for secure daily operation.
Seamless Integration: Engineered for open-vented water networks with simple touch controls and a bright digital screen.
Key Applications and Uses
Whole-House Warmth: Provides continuous domestic hot water and works smoothly with underfloor heating or radiator setups.
Intelligent Water Management: Connects easily with your current external pumps and expansion tanks, supporting convenient Wi-Fi mobile control.
- Scalable Multi-Unit Linkage: Supports connecting multiple high-power open-vented electric boilers in series to easily meet larger heating demands.
Target Scenarios
Renovating Traditional Homes: A perfect heating upgrade for older or historic buildings that rely on traditional low-pressure open water systems.
Spacious Properties: Highly suitable for large houses and villas that require dedicated cold water storage and external expansion tanks.
Advanced Safety and Performance Features
This BK high-power open-vented electric boiler features water-electricity separation, dual anti-freeze, and multiple safety protections. It operates near-silently with constant temperatures, supports external pumps, and offers smart controls.
Patented heating element technology
The complete water-electricity separation inside the chamber stops scale buildup and guarantees total safety. This durable design significantly boosts the lifespan of the high-power open-vented boiler.
Smart Control
JNOD BK high-power electric boilers offer smart Wi-Fi, app, and room thermostat controls. This allows users to easily manage indoor temperatures from anywhere, ensuring great comfort and low energy use.
Product Technical Specifications
| Model | BK340 | BK352 |
| Phase | 3 | |
| Rated Power (kW) | 40 | 52 |
| Voltage (V) | 400 | |
| Rated Current (A) | 3*56.5 | 3*75.4 |
| Wire Section (mm2) | 3*10 | 3*12 |
| Working Temp. Range | 30°C~80°C (in radiator model) | |
| 30°C~55°C (in floor heating model) | ||
| Max. Water Temperature | 80°C | |
| Temperature Difference Setting Range | 5~30°C | |
| Antifreeze Start Temperature | <8°C | |
| Anti-freezing function stop temp. | ≥10°C | |
| Rated Pressure (Mpa) | 0.05-0.3 | |
| Inlet & Outlet Connection | G1/2” | |
| Backwater Inlet connection | G3/4” | |
| Product Size (mm) | 622*436*196 | |
FAQ
The BK Series High-power Open-vented Electric Boiler is a wall-hung boiler with a single electric heating element. It does not have a built-in circulation pump and is compatible with external circulation pumps and water tanks.
Yes. The BK high-power open-vented electric boiler supports multi-unit series/cascading connection, allowing multiple high-power boilers to work together to meet massive heating demands easily.
The system features intelligent, built-in anti-freeze protection. It automatically senses temperature drops and circulates warm water to prevent pipeline freezing.
Yes. It connects seamlessly with external pumps and features smart Wi-Fi/App connectivity and room thermostat compatibility for easy remote management.
Yes, when connected to a hot water tank. However, since it uses a single heating element, it cannot provide space heating and hot water at the same time. If you need simultaneous operation, we recommend choosing our electric combi boiler instead.
Stable Supply & Competitive Factory Price
Customized Service & technical support
EU-compliant Heating Solutions
Compact & Easy Installation Design
Serving Global HVAC Business Partners
We provide tailored HVAC solutions for retailers, installers, distributors, projects, and OEM/ODM brands, offering professional services to global partners.
Why Choose JNOD Electric Boiler Solutions
- Designed for European residential heating systems
- No gas, eco-friendly, safer operations
- Compact wall-mounted design
- Long service life patented heating elements
- Over 98% Heating efficiency
- Low maintenance & stable performance
By partnering with us, you will receive：
- Customized product development and design
- Three-year warranty on heating elements and one-year warranty on the entire machine.
- Free parts included with bulk orders.
- Professional technical support – assistance in resolving product-related issues.
- Technical training, including repair manuals and videos.
To ensure long-term cooperation, we offer bulk customers: a wide variety of high-quality products, priority production and service, factory-direct pricing, and more.