Navien Oil Boiler - 28kW

The Navien LCB700 Blue Flame range of oil boilers is the first in the UK market to offer an A+ ene...

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City Plumbing GBNavien Blue 28Kw Oil Heat Only Boiler External Lcb 700 Rsx Plcb0028sh004
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Product Information

Full details

The Navien Oil Boiler - 28kW is designed for homeowners seeking an energy-efficient and modern heating solution, particularly those undertaking retrofits or with larger homes requiring reliable heat. Its key benefit is an exceptional A+ energy rating when paired with Smart Plus thermostats, leading to significant energy savings and reduced emissions. A caveat to consider is that the A+ rating is contingent on the installation of three Smart Plus room thermostats.

All features

Model Part NumberPLCB0028SH004
BrandNavien

Extended Product Information

FAQs

What is the energy efficiency rating of this boiler?

The Navien LCB700 Blue Flame range achieves an A+ energy rating when installed with 3 Navien Smart Plus room thermostats.

Does this boiler require a hot water cylinder?

Yes, as a regular (heat only) boiler, it requires a separate hot water cylinder to store hot water.

What is Blue Flame technology?

Blue Flame technology is a system that delivers superior efficiency and ultra-low NOx emissions, resulting in a cleaner and more efficient combustion process.

Can I control this boiler remotely?

Yes, through the Navien Smart Plus mobile app, you can monitor and control your heating remotely, utilize Geofencing, and benefit from Smart Forecasting.

How do I achieve the A+ energy rating?

The A+ energy rating is achieved when the boiler is installed with three Navien Smart Plus room thermostats, which optimize heating control and efficiency.

Is this boiler suitable for older homes?

Yes, regular oil boilers are a great choice for retrofits, especially in homes with existing heating systems and multiple bathrooms.

What maintenance does the boiler need?

Annual servicing by a qualified engineer is essential, along with regular checks and cleaning of the oil filter and condensate pipe.

Troubleshooting

Boiler not firing up

Check the oil supply, ensure the thermostat is calling for heat, and verify that the power supply to the boiler is on. If the issue persists, contact a qualified engineer.

Weak or no heating output

Check radiator valves are open, bleed radiators if necessary, and ensure the system pressure is adequate. Inspect the boiler for any error codes.

No hot water

Verify the hot water cylinder is functioning correctly and that the boiler is calling for hot water. Check the boiler's hot water circuit and settings.

Smart features not working

Ensure the boiler is connected to your Wi-Fi network, the Navien Smart Plus app is updated, and your account is active. Restart the boiler and your router.

Error code displayed

Consult the Navien boiler manual for the specific error code and its recommended solution. Many require a professional diagnosis.

Pros and Cons

Pros

  • High energy efficiency leading to potential cost savings.
  • Environmentally friendly with ultra-low NOx emissions.
  • Advanced smart control options for remote management and optimized heating.
  • Designed for straightforward installation, reducing fitting time and complexity.
  • Durable construction with a stainless steel heat exchanger.

Cons

  • A+ energy rating requires specific accessories (3 Smart Plus thermostats).
  • As a regular boiler, it requires a hot water cylinder and may be less suitable for systems demanding instant hot water.
  • Relies on oil as fuel, subject to market price fluctuations.
  • Smart features require a compatible network and potentially a subscription for full functionality.

Setup, Compatibility & Care Instructions

Setup:

  1. Installation should be performed by a qualified heating engineer familiar with oil boiler systems.
  2. Ensure the boiler is located in a well-ventilated area, complying with all local regulations.
  3. Connect to a suitable oil supply and a properly sized flue system.
  4. For optimal efficiency and the A+ energy rating, install three Navien Smart Plus room thermostats and connect them to the boiler.
  5. Configure the smart controls via the Navien Smart Plus mobile app, following the app's instructions.

Compatibility:

  • This boiler is designed as a regular (heat only) boiler and requires a separate hot water cylinder.
  • Compatible with standard oil fuel supplies.
  • Requires integration with Navien Smart Plus controls for smart features.
  • Ensure any existing pipework and radiators are in good condition and suitable for the system's output.

Care:

  • Annual Servicing: It is crucial to have the boiler serviced annually by a qualified engineer to maintain efficiency, safety, and warranty.
  • Filter Cleaning: Regularly check and clean the oil filter as per the manufacturer's recommendations.
  • Condensate Pipe: Ensure the condensate drain pipe is clear and not frozen, especially in colder weather.
  • General Cleaning: The exterior of the boiler can be cleaned with a damp cloth. Avoid abrasive cleaners.

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