EasyManua.ls Logo

Navien NCB-24LDWE - User Manual

Navien NCB-24LDWE
72 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
Ɣ
These appliances are for use with natural gas or LPG.
(An LPG conversion kit is included with the boiler.)
Ɣ
Type: B23-B33-B53-C13-C33-C43-C53-C63-C83
Gas Model GC Number
Natural Gas
NCB-24LDWE
NCB-28LDWE
NCB-34LDWE
NCB-40LDWE
47-709-01
47-709-02
47-709-03
47-709-04
LPG
NCB-24LDWE
NCB-28LDWE
NCB-34LDWE
NCB-40LDWE
47-709-05
47-709-06
47-709-07
47-709-08
Keep this manual near this boiler for future r eference
whenever maintenance or service is required.
Installation &
Operation
Manual
WARNING
If the information 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 vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
Ɣ
Do not try to light any appliances.
Ɣ
Do not touch any electrical switch; do not use any phone in your building.
Ɣ
Immediately call the National Gas Emergency Helpline on (Freephone) 0800 111999 or your gas
supplier from a neighbour’s phone. Follow the instructions received.
Installation and service must be performed by a Gas Safe registered installer, service agency or
the gas supplier.
Condensing Combi Boiler

Table of Contents

Other manuals for Navien NCB-24LDWE

Questions and Answers

  • A
    Amanda DiazAug 3, 2025
    Why is my Navien NCB-24LDWE Boiler space heating not working?
    • K
      Kayla Weaver PhDAug 3, 2025
      If your Navien Boiler's space heating isn't working, first ensure the temperature setting isn't too low. Then, confirm the system has power and isn't in standby mode by checking the power connection and pressing the Power button. Note that the heating side won't function when the unit is heating domestic hot water (DHW). Finally, inspect and clean the filters on the heating side.
  • M
    melissasmithAug 10, 2025
    How to fix not hot enough water from Navien NCB-24LDWE Boiler?
    • J
      Joseph ThomasAug 11, 2025
      If the water from your Navien Boiler's hot water tap is not hot enough, begin by checking the boiler’s temperature setting. Also, check for cross plumbing between the cold and hot water lines.
  • A
    Amy KellerAug 17, 2025
    What to do if Navien Boiler hot water is too hot?
    • D
      daniel57Aug 17, 2025
      If the water from your Navien Boiler's hot water tap is too hot, check the boiler’s temperature setting.
  • J
    Jason MedinaAug 26, 2025
    How to fix no water coming out of Navien Boiler?
    • M
      Michael BeardAug 26, 2025
      If no water comes out when you open the hot water tap connected to your Navien Boiler, make sure that the shut–off valves on the hot and cold pipes are open.

Summary

Safety Information

About the Boiler

Technical Data

Provides a comprehensive table of specifications and performance data for the boiler models.

Components

Diagrams showing the key internal components of the boiler.

Dimensions

Illustrations and table detailing the boiler's external dimensions and connection sizes.

Operating Modes

Explanation of the different operating modes: space heating and DHW.

Installation Procedure

A flow diagram outlining the step-by-step process for installing the boiler.

Installing the Boiler

Choosing an Installation Location

Guidance on selecting a suitable location for boiler installation, considering clearances and utilities.

Mounting the Boiler to the Wall

Instructions for securely mounting the Navien NCB LDWE boiler to a wall using the provided bracket.

Installing the System Piping

Installing a Space Heating System

Details on connecting the boiler to the space heating system, ensuring efficient heat transfer.

Installing a Domestic Hot Water (DHW) System

Guide for connecting the boiler to provide domestic hot water efficiently using the flow sensor.

Connecting the Condensate Drain Line

Instructions for correctly connecting the condensate drain line, including material and slope requirements.

Connecting the Gas Supply

Flue System

Setting the DIP Switches

Connecting Electrical Supplies

Connecting the Power Supply Cables

Detailed procedure for connecting the main power supply cables to the boiler's terminals.

Operating the Boiler

Adjusting the Temperature

Guide to adjusting both space heating and DHW temperatures via the boiler's control panel.

Setting the Parameters

Instructions for accessing and modifying various boiler parameters with caution.

Maintaining the Boiler

Appendices

Gas Conversion

Instructions for converting the boiler from natural gas to LPG, including safety warnings.

Getting Service

Navien NCB-24LDWE Specifications

General IconGeneral
BrandNavien
ModelNCB-24LDWE
CategoryBoiler
LanguageEnglish

Related product manuals