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Navien NHB Series User Manual

Navien NHB Series
135 pages
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10 About the Boiler
Terminal Block
Dual Venturi
Fan & Motor Assembly
Optional Heating Return
Fire-Tube Type
Heat Exchanger
Gas Pipe
Power Switch
Heating Return
Gas Valve
ASME Name Plate
Mixing Chamber
Internal Air Filter
PRV-Air Vent Connection
(Optional Heating Supply)
Heating Supply
Condensate Trap
(Siphon)
PCB
Front Panel
APS
Air Intake Pipe

Table of Contents

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Navien NHB Series Specifications

General IconGeneral
TypeCondensing Boiler
EfficiencyUp to 95% AFUE
Fuel TypeNatural Gas or Propane
Vent TypeDirect Vent
Vent Diameter2" or 3"
Heat Exchanger MaterialStainless Steel
Water Connections3/4" NPT
DimensionsVaries by model
WeightVaries by model
Warranty5-Year Parts

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