Navien H2Air ComfortAir+ Kit AHU Optimizer PNBD-000001, NPE-A models


Weight: 0.80 lbs
MPN: PNBD-000001

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Combination space heating and DHW system using NPE-A Series condensing tankless water heaters

The Navien H2Air ComfortAir+ Kit is an add-on accessory for Navien NPE-A Series tankless water heaters. It creates a system with high-efficiency space heating and endless domestic hot water.

The H2Air is one kit that allows for space heating and domestic hot water ("DHW") using the internal recirculation pump inside the NPE-A series models as the AHU (air handler units) system pump.

ComfortAir+ kit be used with both new construction and already-built residences. Navien's H2Air Kit allows for the combination of space heating and DHW system between a NPE-A Series tankless water heater and a hydronic air handler. With H2Air, and proper system sizing, you can create a combination appliance that can provide endless domestic hot water and continuous space heating.

H2Air is compatible with hydronic air handler models that require W1/W2/R terminals along with single or dual-stage thermostats (self-powered thermostats only). The Outdoor Reset Sensor that's included provides optimum efficiency and performance for space heating.

System requirements and limitations

♦ Only compatible with NPE-180A, NPE-210A and NPE-240A units produced on or after May 31, 2014
♦ Only works with AHU's
♦ Use with one NPE-A and one AHU only

Refer to the AHU manufacturer's specifications to determine the proper output capacity.

Additional features

→ Choose between priority for domestic hot water or simultaneous domestic hot water and heating
→ Endless supply of domestic heated water
→ Adjustable pump purge and cycle time settings
→ Adjustable outdoor temperature reset and heating set points
→ CSA P.9-11 rating certification with certain air handler models

Included with the purchase of the H2Air Kit

• Controller (part number KDO-A100)
• 13-pin connector cable
• Outdoor temperature sensor
• Flow switch for domestic hot water


Specifications Sheet
Installation Manual

H2Air Installation Example

Navien H2Air Installation example PNBD-000001

The NAVIEN, KD NAVIEN, H2Air and ComfortAir+ trademarks are the property of Navien America, Inc. and/or KyungDong Navien.

Alternate model number spelling: PNBD000001

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