Navien NFC-175 Installation & Operation Manual page 10

General Specifications
Item
Dimensions
Boiler Weight
Boiler Weight with Water
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
35°F (19°C) Temp Rise
Flow Rate (DHW) 45°F (25°C) Temp Rise
67°F (37°C) Temp Rise
Gas Connection Size
Main Supply
Power Supply
Maximum Power
Consumption
Casing
Materials
Heat Exchangers
Exhaust
Venting
Intake
Vent Clearance
Safety Appliances
Temperature Setting Range
Item
Supply
Space Heating
Return
DHW
For more information about the space heating temperature setting range, refer to "11.3.3 Setting the Space Heating Operation" on
Note
page 86.
10 About the Boiler
NFC-175
17.3 in (W) x 17.3 in (D) x 33.5 in (H)
-0.05 to -0.47 in WC
-0.10 to -0.45 in WC
2 in or 3 in PVC, CPVC, approved polypropylene*
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C)
2 in or 3 in PVC, CPVC, polypropylene
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C)
Flame Rod, APS, Ignition Operation Detector
Water Temperature High Limit Switch, Exhaust Temperature High Limit Sensor, Water
Pressure Sensor
Temperature Setting Range
77–194°F (25-90°C)
68–158°F (20-70°C)
86°F-140°F (30°C-60°C)
145 lb (66 kg)
183 lb (83 kg)
Indoor Wall-Hung
Forced Draft Direct Vent
Electronic Ignition
3.5 in–10.5 in WC
8.0 in–13.5 in WC
-0.05 to -0.20 in WC
-0.10 to -0.45 in WC
10.4 GPM (39.5 L/m)
7.9 GPM (30.0 L/m)
5.4 GPM (20.3 L/m)
/ in NPT
3
4
120V AC, 60Hz
Less than 15 amperes
Cold-rolled carbon steel
Stainless Steel
2 in or 3 in Stainless Steel
2 in or 3 in Stainless Steel
0 in to combustibles
Remarks
Actual supply and return temperatures vary
depending on the selected outdoor reset
curve.
NFC-200