Technical Data; General Specifications - Navien NHB-055 Service Manual

3. Technical Data

3.1 General Specifications

The following table lists the specifications for the boiler. Additional specifications about water, gas, electric, and air supplies (venting) appear in
the Installation section.
Space Heating Specifications
Heating Input (MBH)
Model
Number
1
Min
NHB-055 8
NHB-080 8
NHB-110 10
NHB-150 10
1. Ratings are the same for natural gas models converted to propane use
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.
16 NHB Service Manual
Navien Condensing Boiler
Space Heating Ratings
Heating
Capacity
(MBH)
Max
55 51
80 74
110 102
150 138
Net AHRI
Rating Water AFUE
2 3
(MBH)
44
64
89
120
Other Specifications
, % Water Pressure
2
95
95
12–30 psi
95
95
Water Connection Size
(Supply, Return)
1 in NPT
Version 1.0