Navien NHB H Series Installation And Operation Manual page 7

General Specifications
Item
Dimensions
Weight
Installation Type
Venting Type
Ignition
Natural Gas Supply Pressure (from
source)
Propane Gas Supply Pressure (from
source)
Natural Gas Manifold Pressure
Propane Gas Manifold Pressure
Gas Connection Size
Main Supply
Power Supply
Maximum Power
Consumption
Casing
Materials
Heat Exchangers
Exhaust
Venting
Intake
Vent Clearance
Safety Devices
* For more information about the approved vent materials, refer to "5.4 Selecting Vent Pipe Materials" on page 61.
Temperature Setting Range
Item
Supply
Space
Heating
Return
For more information about the space heating temperature setting range, refer to "11.8 Setting the
Note
Space Heating Operation" on page 104.
NHB-055H
17.3 in (W) x 12.8 in (D) x 23.8 in (H)
73 lb (33 kg)
Indoor Wall-Hung
Forced Draft Direct Vent
Electronic Ignition
3.5 in–10.5 in WC
8.0 in–13.5 in WC
-0.11 in WC
-0.11 in WC
3/4 in NPT
120V AC, 60Hz
Less than 15 amperes
Cold-rolled carbon steel
Primary and Secondary Heat Exchangers: Stainless Steel
2 in or 3 in PVC, CPVC, approved polypropylene*
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C), Stainless Steel
2 in or 3 in PVC, CPVC, polypropylene
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C), Stainless Steel
0 in to combustibles
Flame Rod, APS, Ignition Operation Detector
Water Temperature High Limit Switch, Exhaust Temperature High
Limit Sensor, Water Pressure Sensor, Vent Installation Detector (VID)
Temperature Setting Range
77–185°F (25-85°C)
68–158°F (20-70°C)
NHB-080H NHB-110H
80 lb (36 kg)
-0.17 in WC -0.26 in WC
-0.17 in WC -0.25 in WC
Remarks
Actual supply and return temperatures
vary depending on the selected outdoor
reset curve.
NHB-150H
-0.40 in WC
-0.41 in WC
About the Boiler 7