Specifications - Navien NCB-150E Installation & Operation Manual

1.3 Specifications

The following tables list 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
NCB-150E
12
NCB-180E
14
NCB-210E
18
NCB-240E
18
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
About the Boiler
8
Navien Combination Boiler
Space Heating Ratings
2
Heating Capacity ,
MBH
Max
60 56
80 75
100 94
120 112
NCB-150E
12,000 BTU/H
120,000 BTU/H
15-150 psi
0.5 GPM (1.9 L/m)
3. GPM
/ in NPT
3
4
/ in NPT
3
4
Net AHRI Rating Water
3
,
AFUE
MBH
49 95
65 95
82 95
97 95
NCB-180E NCB-210E
14,000 BTU/H 18,000 BTU/H
150,000 BTU/H 180,000 BTU/H
3.4 GPM
4.0 GPM
Other Specifications
Water Water Connection
2
, %
Pressure size (Supply, Return)
1 in NPT
12-30 psi
NCB-240E
18,000 BTU/H
199,900 BTU/H
4.5 GPM