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Navien NHB-110 Service Manual

Navien NHB-110
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NHB Service Manual 77
Version 1.0
4.9.13 Dual Venturi
Part Check Point
Function
Controls the amount of mixed gas to modulate heating input.
It uses synchronous motor to control the amount of mixed gas by stage 1 and 2.
Failure Event
1. Blade not closing
2. Blade not opening
Effects
1. Frequent On / Off due to excessive heat
2. Fail to reach the set temperature due to lack of heat
Error Code E060
Diagnostic
Voltage check : Checking the voltage of synchronous motor
(Approximately after 2 sec of Open / Close operation, the motor turns off.)

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Navien NHB-110 Specifications

General IconGeneral
CategoryBoiler
BrandNavien
ModelNHB-110
Maximum Input110, 000 BTU/h
Efficiency95% AFUE
Weight75 lbs
Vent TypeDirect Vent
Fuel TypeNatural Gas or Propane
Heat Exchanger MaterialStainless Steel
Water Connection Size3/4 inch
Gas Connection Size3/4 inch
Vent MaterialPVC, CPVC, Polypropylene
Vent Size2 inch

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