Navien NCB-24LSWE Installation & Operation Manual

Also see for NCB-24LSWE: Service manual

Navien NCB-24LSWE Installation & Operation Manual Manual pdf 50 page image

Appendixes 5110.1 Gas ConversionThis boiler is configured for Natural Gas at the factory. Ifconversion to Propane Gas is required, use the conversion kitsupplied with the boiler.WARNINGThis conversion kit must be installed by a qualified serviceagency* in accordance with all applicable codes andrequirements of the authority having jurisdiction. Theinformation in these instructions must be followed tominimize the risk of fire or explosion or to prevent propertydamage, personal injury or death. The qualified serviceagency is responsible for the proper installation of thiskit. The installation is not proper and complete until theoperation of the converted appliance is checked as specifiedin the manufacturer’s instructions supplied with the kit.* A qualified service agency is any individual, firm, corporation orcompany which either in person or through a representative isengaged in and is responsible for the connection, utilization, repairor servicing of gas utilization equipment or accessories; who isexperienced in such work, familiar with all precautions required, andhas complied with all of the requirements of the authority havingjurisdiction.Tools Required:● Phillips Screwdriver● Flathead Screwdriver● 5/32 in or 4 mm Allen Wrench● Combustion Analyzer or Dual Port Manometer● Gas Leak DetectorIncluded Items:● Gas Orifice (refer to below table)Model NG LPNCB-24LSWE Ø4.80 Ø3.80NCB-28LSWE Ø6.10 Ø4.50NCB-34LSWE Ø6.10 Ø4.50NCB-40LSWETable 1. Orifice Size● Gas Pressure and Conversion Kit Number LabelsProcedure:1. Turn off both gas and water supply to the boiler.2. Using a Phillips screwdriver, remove two screws (one at theleft bottom and one at the right bottom) of the front coverassembly to gain access to the internal components. SeeFigure 1 for illustration of the front cover on the unit.Figure 1. NCB LSWE Series Front cover3. Remove the front cover and place it in a safe location toprevent accidental damage.4. Label all the wires on the PCB.5. Disconnect all the wires.10. Appendixes