Technical Data; General Specifications - Navien NCB-150E 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 Max
NCB-150E 12 60
NCB-180E 14 80
NCB-210E 18 100
NCB-240E 18 120
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.
Domestic Hot Water Specifications
Item
Min
Input Ratings
Max
Water Pressure
Minimum Flow Rate
Flow Rate 77°F (43°C) Temp. Rise
DHW Supply Connection Size
Cold Water Input Connection Size
Navien Combination Boiler
Space Heating Ratings
Heating Capacity , Net AHRI Rating Water
2
MBH MBH
56 49
75 65
94 82
112 97
NCB-150E NCB-180E
12,000 BTU/H 14,000 BTU/H
120,000 BTU/H 150,000 BTU/H
15-150 psi
0.5 GPM (1.9 L/m)
3.1 GPM 3.4 GPM
/ in NPT
3
4
/ in NPT
3
4
Other Specifications
, Water Water Connection
3
AFUE 2 , %
Pressure size (Supply, Return)
95
95
12-30 psi 1 in NPT
95
95
NCB-210E NCB-240E
18,000 BTU/H 18,000 BTU/H
180,000 BTU/H 199,900 BTU/H
4.0 GPM 4.5 GPM
Technical Data 17