Navien NHB-110 User Manual

11About the Boiler
1.5 Dimensions
The following diagrams show the dimensions of the boiler and the table lists the supply connections.
23.6" (600 mm)
Supply Connections
Description Diameter
A Air Intake 2 in
B Exhaust Gas Vent 2 in
C Air Vent Connection
3
/
4
in
D Rubber Grommet 1 in
E Space Heating Return 1 in
F Condensate Outlet
1
/
2
in
G Gas Connection
3
/
4
in
H Space Heating Supply 1 in
Overhead View
15.9” (405 mm)
A
B
4.5” (115 mm)
(77 mm)3” (67 mm)2.6”
(60 mm)2.3”
C
6.6” (170 mm)
17.3” (440 mm)
Supply Connections
15.8” (401 mm) 6” (152 mm)
2.3” (60 mm)
5.5” (141 mm)
D
FE
13.1” (335 mm)*
* NHB-055/080: 11.8” (300 mm)
H
G

Navien NHB-110 Specifications

General

Category	Boiler
Brand	Navien
Model	NHB-110
Maximum Input	110, 000 BTU/h
Efficiency	95% AFUE
Weight	75 lbs
Vent Type	Direct Vent
Fuel Type	Natural Gas or Propane
Heat Exchanger Material	Stainless Steel
Water Connection Size	3/4 inch
Gas Connection Size	3/4 inch
Vent Material	PVC, CPVC, Polypropylene
Vent Size	2 inch