Navien NPE-240A Service Manual

Version 2.21
26 NPE Service Manual
Maximum Liquefied Propane Delivery Capacity
in Thousands of BTU/H (0.5” WC Pressure Drop)
Pipe Size
Length (including fittings)
10'
(3m)
20'
(6m)
30'
(9m)
40'
(12m)
50'
(15m)
60'
(18m)
80'
(24m)
100'
(30m)
125'
(38m)
150'
(45m)
175'
(53m)
200'
(60m)
250'
(76m)
1/2" 291 200 160 137 122 110 101 94 89 84 74 67 62
3/4" 608 418 336 287 255 231 212 197 185 175 155 140 129
1" 1,150 787 632 541 480 434 400 372 349 330 292 265 243
1 1/4" 2,350 1,620 1,300 1,110 985 892 821 763 716 677 600 543 500
1 1/2" 3,520 2,420 1,940 1,660 1,480 1,340 1,230 1,140 1,070 1,010 899 814 749
2" 6,790 4,660 3,750 3,210 2,840 2,570 2,370 2,200 2,070 1,950 1,730 1,570 1,440
NOTE
●
For installations using CSST (flexible) gas piping, please refer to the sizing charts provided by the manufacturer.
●
The use of single-stage regulators are recommended. Dual-stage regulators could cause operational issues with the water heater.

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