Description
The Navien NCB300 boiler is available in 4 models:
NCB300-28K, NCB300-30K, NCB300-37K, NCB300-41K.
The main features are as follows:
● Power Interruption: When the power is restored after a power
failure, the boiler will automatically start and return to normal
operation. A manual reset is not required.
● Freeze Protection: A sensor inside the boiler automatically
detects the temperature and, if necessary, 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 blows the internal glass
fuses and automatically cuts off the gas supply.
● Lightning Protection: Each boiler is specially grounded, both
internally and externally, to protect against lightning strikes.
● Carbon Monoxide Protection: The boiler is designed to
maintain a safe air-to-gas ratio and combustion rate. This
function is continuously monitored by the boiler’s air ratio
control module.
● Thermostat Control Failure: Should the thermostat fail to
function properly, the boiler’s gas supply will be shut off
automatically as a safeguard.
● Auto Fan Detection: The rotation of the fan is automatically
detected and controlled. Fan failure will stop the operation of
the boiler.
● Boiling Prevention: Excessive temperatures will automatically
stop the boiler.
