Specifications - Navien NHB-055 Installation & Operation Manual

1.3 Specifications

The following tables list the specifications for the boiler. Additional specifications for water, gas, electricity, and vent connections are provided
in the Installation section.
Space Heating Specifications
Heating Input (MBH)
Model Number 1
Min
NHB-055
NHB-080
NHB-110 10
NHB-150 10
1. Ratings are the same for natural gas models converted to propane use.
Note
2. Based on U.S. Department of Energy (DOE) test procedures.
3. The net AHRI water ratings shown are based on a piping and pickup allowance of 1.15. Consult Navien before selecting a boiler
for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping
system, etc.
Navien Condensing Boiler
Space Heating Ratings
Max
8 55
8 80
110
150
Heating Net AHRI
Capacity 2 Rating Water 3
(MBH) (MBH)
51 44
74 64
102 89
138 120
Other Specifications
Water
AFUE 2 (%)
Pressure
95
95
12–30 psi
95
95
Water
Connection
Size (Supply,
Return)
1 in NPT
About the Boiler 7