Navien NPE-240A Service Manual

Version 2.21
170 NPE Service Manual
10.7.3 NPE-180A/240A Pump P-Q Curve
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*GCFHVO
(NQY)2/
23%WTXG
ft m
NOTE
●
When the system uses an internal circulation pump with
the NPE-180A/240A water heaters, the flow rate may vary
depending on the type and capacity of the AHU in use.
●
If the system uses an internal circulation pump with the
NPE-180A/240A water heaters or pumps manufactured by
SunTherm corporation (MMVE0S4NAAA, MMVE0M4NAAA),
the flow rate will be approximately 3 GPM.
10.6 Maintenance
The Navien NPE-180A and NPE-240A water heaters that are used
in the DHW/heating systems should be properly maintained
and flushed on an annual basis. Please see the NPE Water Heater
Service Manual for more details regarding annual servicing and
maintenance.
10.7 Appendix
This section provides additional information to be considered
when you design a hydronic system using an NPE-180A/240A
water heater.
10.7.1 NPE-180A/240A Pressure Drop
Curve
10.7.2 NPE-180A/240A Flow Rate Graph

Navien NPE-240A Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Energy Factor	0.97
Energy Efficiency	97%
Voltage	120V
Ignition Type	Electronic
Maximum Input	199, 900 BTU/h
Water Connection Size	3/4"
Gas Connection Size	3/4"
Warranty	15-year on heat exchangers, 5-year on parts, 1-year on labor
Dimensions	17.3" W x 13.2" D x 27.4" H