Navien NCB-240E Service Manual

Getting Service
If your boiler requires service, you have several options for getting service:
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Contact Technical Support at 1-800-519-8794 or on the website: www.navienamerica.com.
For warranty service, always contact Technical Support first.
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Contact the technician or professional who installed your boiler.
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Contact a licensed professional for the affected system (for example, a plumber or electrician).
When you contact Technical Support, please have the following information at hand:
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Model number
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Serial number
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Date purchased
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Installation location and type
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Error code, if any appears on the front panel display.
Navien, Inc.
800.519.8794
www.Navien.com
20 Goodyear lrvine, CA 92618
Service Manual
NCB-E Condensing Combi Boiler
THE LEADER IN CONDENSING TECHNOLOGY
Version: 1.4 (Oct 26, 2015)

Navien NCB-240E Specifications

General

Maximum Input Capacity	199, 900 BTU/h
AFUE	95%
Water Pressure	15-150 psi
DHW Flow Rate @ 77°F Temperature Rise	4.5 GPM
Vent Diameter	2" or 3"
Gas Type	Natural Gas or Propane
Water Connection Size	3/4" NPT
Gas Connection Size	3/4" NPT
Vent Size	2" or 3"
Warranty	5 years parts
Type	Condensing Combi Boiler