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Warranty        15

Annual service

For Navien warranty to be valid an annual service must be 

carried out by a suitably qualified and Gas safe registered 

installer every year after installation. The cost of this annual 

service is not included in the guarantee.

Your Warranty Conditions

Navien undertakes to rectify any manufacturing defect that 

occurs within 5 years of the installation date. Please go to our 

website to see any additional years on the warranty.

For Navien warranty to be valid an annual service must be 

carried out by a suitably qualified and Gas Safe registered 

installer every year after installation.

1.  Navien Warranty registration is simple. Just register the 

boiler on the Navien Installers Warranty App within 30 days 

of installation. The details of installation will be then be 

automatically registered within Navien Service Management 

System. Alternatively, please email a photo of your 

completed benchmark form to [email protected].

2.  The completed Benchmark Checklist will be required in the 

event of any warranty work and may be required by the 

local Building Control Inspector.

3.  The cost of this annual service is not included in the 

Warranty.

4.  The start-up and annual service are to be carried out by a 

suitably qualified and Gas Safe registered installer.

5.  Navien Warranty will be null and void in the following cases:

 

If the annual service by a suitably qualified and Gas Safe 

registered installer has not been carried out.

 

If the boiler has not been installed in accordance with the 

applicable laws and regulations for this type of appliance.

 

If the boiler has not been started up immediately after its 

installation, by a suitably qualified and Gas Safe registered 

installer.

6.  Navien Smart Plus wireless thermostat comes with 2 year 

warranty.
Navien Smart Plus wireless thermostat has a standard 2 year 

manufacturer’s warranty if a suitably qualified engineer has 

installed the system in accordance with Navien instructions. 
Failures due to misuses or incorrect installation, use of non 

suitable power or fuel, supply with water with physical 

or chemical properties causing incrustation or corrosion, 

incorrect handling of the appliance and, in general, for any 

reason beyond Navien’s control, are excluded from this 

guarantee. This warranty does not affect the consumer’s 

rights as stipulated by law.

7.  If your Navien boiler develops a fault your first action should 

be contact your installer, as his professional assessment 

is needed under the terms of Navien Warranty. If you are 

unable to contact your installer, please phone Navien 

Service: 0844 332 2323 or visit Navien website: www.navien.

co.uk.

Suitable Use

The NCB700 boiler is designed with all the necessary safety 

systems. Unsuitable use of the appliance for a purpose it was not 

designed for entails risk of damage to the boiler or property, and 

even of injury to the user and other persons.

The NCB700 boiler is designed to generate heat for domestic 

hot water and to be connected to central heating systems. Any 

use other than the above will be considered unsuitable use of 

the boiler. In such cases the manufacturer/supplier shall not 

be liable for any damage caused, and the user will be liable for 

the damage. Correct use of the boiler includes reading the user 

and installation instructions and all applicable documents, and 

complying with the maintenance and inspection conditions.

Everyday Care

Clean the outside of the boiler with a damp cloth with a little 

detergent. Do not use abrasive products to clean the boiler.

Waste Recycling and Disposal

Observe the applicable national regulations and standards 

concerning waste disposal.

The boiler

Neither the wall-mounted boiler or its accessories are to be 

disposed of with the domestic waste. Ensure the appliance and 

its accessories, where applicable, are suitably disposed of.

Packaging

The transport packaging will be disposed of by the specialist 

technician who made the installation. 

Warranty

Summary of Contents for NCB700-24L

Page 1: ...ice TAS first Contact the technician or professional who installed your boiler Contact a Gas Safe Registered engineer When contacting an official Technical Assistance Service TAS please have the follo...

Page 2: ...ion in these instructions is not followed exactly a fire or explosion may result causing property damage or personal injury Do not store or use petrol or other flammable vapours and liquids in the vic...

Page 3: ...he Boiler 7 2 3 Using the Front Panel 8 3 Operating the Boiler 10 3 1 Turning the Boiler On or Off 10 3 2 Adjusting the Temperature 10 3 3 Viewing Basic Information 11 3 4 Resetting the Boiler 12 4 Tr...

Page 4: ...dge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved Children shall not play with the appliance Cleaning and user ma...

Page 5: ...result in fire or explosion Do not place combustibles such as newspapers or laundry near the boiler or flue system Doing so may result in a fire DANGER HOT BURN To prevent burns Use the lowest operat...

Page 6: ...ything other than its intended purpose as described in this manual Do not place or use hair sprays spray paints or any other compressed gases near the boiler or flue system including the flue terminat...

Page 7: ...ill void the manufacturer s warranty Should overheating occur or the gas supply fail to shut off turn off the manual gas valve to the appliance EC Conformity Declaration 0063 Navien hereby declares th...

Page 8: ...initiates a safety heating cycle to prevent internal equipment damage due to freezing temperatures Short Circuit Protection Any short circuit occurring in the boiler s electrical circuit immediately...

Page 9: ...amming mode Displayed when the boiler s schedule programming operation is set f DHW preheat Displayed when the DHW preheat feature is enabled DHW preheat Always ON DHW Intelligent g Central heating de...

Page 10: ...ting and DHW supply temperatures Refer to the following table for detailed information a b c d e f a Menu button Access to the Main menu screen b Back button Access to the previous screen c OK button...

Page 11: ...l heating temperature cannot be adjusted when the Heat Demand function is set to OpenTherm 3 2 2 Adjusting the DHWTemperature WARNING Before adjusting the water temperature carefully read To prevent b...

Page 12: ...Calculation will be displayed 11 Water Press Water pressure bar 12 Flame Value Flame detector AD value Flame On 8bit AD values equal to or lower than 70 Flame Off 8bit AD values equal to or higher tha...

Page 13: ...Gas Fuel type NG LPG 23 Main F W ver Main firmware version 24 Panel F W Ver Controller panel firmware version Note The fan moter controls the APS so the fan target speed Fan Target RPM is only for yo...

Page 14: ...enough draw at least 1 9 litres of water per minute LPM through the boiler Is an error code displayed on the front panel If an error code is displayed refer to 4 2 Understanding Error Codes on page 1...

Page 15: ...mistor open or short circuit Alarm Water Supply E302 Low water pressure Auto E352 High water pressure Auto E353 Abnormal operation Water pressure sensor Auto DHW Circulation E407 DHW Outlet thermistor...

Page 16: ...bly qualified engineer has installed the system in accordance with Navien instructions Failures due to misuses or incorrect installation use of non suitable power or fuel supply with water with physic...

Page 17: ...gy efficiency class A A A A Rated heat output kW 20 23 28 33 Central heating annual energy consumption GJ 37 43 52 57 Water heating annual electricity consumption kWh 66 65 45 46 Water heating annual...

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