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NHB

Condensing Heating Boiler

Nhb-2021-sm2

15:1

T U R N D O W N
R A T I O

Industry’s largest turn down ratio in the NHB-150 providing ease of installation with multiple zones while maintaining high operational efficiencies.

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NHB Integrated control

The integrated control provides industry leading options and features in the boiler operation parameters, including:

  • Adjustable heat capacity.
  • A timed hydronic supply water boost feature.
  • Adjustable anti-cycle timer.
  • Freeze protection.
  • Pressure LWCO with manual reset.
  • Adjustable minimum burner time setting.
  • Adjustable turn down ratio timing.
  • Outdoor reset and domestic hot water priority.
  • Adjustable outdoor temperature reset curves.
  • Field gas convertible.

NHB Boilers

NHB Boiler warms things up for Pennsylvania family

Manifold Kits

Navien’s Manifold kits are ideal for hydronic space heating applications. With these manifolds, we have done the piping work for you. Both primary and secondary loop manifold kits are designed to work on all NHB models for fast and clean installations. All you need to add is your own appropriately sized pump

  • Primary-manifold

    NHB Primary Manifold Kit
    GFFM-MSOZUS-001

  • Secondary-manifold

    Secondary Manifold Kit
    GFFM-SKTZUS-001

Cascading up to 16 units and
common vent up to 8 units

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Navien’s two largest condensing boilers, NHB-110 and NHB-150, can be cascaded and common vented

 

With our cascading technology, when a unit gets up to 80% capacity determined by the supply and return temperatures, the next unit will enable to help meet the hydronic space heating requirements.

This hydronic space heating requirement and demand ratio will continue until all units are generating the needed hydronic space heat up to the maximum cascaded capacity. The Navien cascading system also balances out the workload of each unit for longer life. The NHB is dual certified for single and 2-pipe venting applications.

NHB Models

NHB-55
Max HTG Input: 55,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-55 condensing heating boiler
View model
NHB-55
NHB-80
Max HTG Input: 80,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-80 condensing heating boiler
View model
NHB-80
NHB-110
Max HTG Input: 110,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-110 condensing heating boiler
View model
NHB-110
NHB-150
Max HTG Input: 150,000 BTU/h
Indoor wall-hung
Residential/Commercial
Navien NHB-150 condensing heating boiler
View model
NHB-150
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