Version 1.4
14 NCB-E Service Manual
2.1 Product Information
Navien features the NCB-E series gas boiler with a built-in
Circulation Pump and Air vent. This appliance is fully modulating
and provides central heating and domestic hot water. Depending
on the heat capacity, each model is divided into three types; 150E,
210E and 240E.
Model
Maximum
Space Heating
Input
Maximum
DHW
Input
NCB-150E
60,000 BTU/H
120,000 BTU/H
NCB-180E
80,000 BTU/H
150,000 BTU/H
NCB-210E
100,000 BTU/H
180,000 BTU/H
NCB-240E
120,000 BTU/H
199,900 BTU/H
The appliance always gives priority to DHW supply.
Navien features the NCB-E series boiler with a built-in Circulation
pump and 3-Way valve assembly, Flow sensor, DHW plate heat
exchanger and safety valve(or relief valve). A separate heating
expansion vessel is required.
Internal freeze protection and an electronic control unit are
incorporated within the boiler. Any standalone room thermostat or
set of contacts can be used with the boiler.
2. Product Information
