About the Boiler 9
General Specifications
Item
NCB-180
NCB-210
NCB-240
Dimensions
17 in (W) x 28 in (H) x 12 in (D)
Weight
74 lbs (34 kg)
84 lbs (38 kg)
84 lbs (38 kg)
Installation Type
Indoor Wall-Hung
Venting Type
Forced Draft Direct Vent
Ignition
Electronic Ignition
Natural Gas Supply Pressure (from source)
3.5 in-10.5 in WC
Propane Gas Supply Pressure (from source)
8.0 in-13.5 in WC
Natural Gas Manifold Pressure (min/max)
-0.07 in WC / -0.66 in WC
-0.05 in WC / -0.36 in WC
-0.06 in WC / -1.2 in WC
Propane Gas Manifold Pressure (min/max)
-0.06 in WC / -0.62 in WC
-0.1 in WC / -0.66 in WC
-0.03 in WC / -0.98 in WC
Gas Connection Size
3/4 in NPT
Power Supply
Main Supply
120V AC, 60Hz
Maximum Power
Consumption
200W (max 2A)
Materials
Casing
Cold-rolled carbon steel
Heat Exchangers
Primary Heat Exchanger: Stainless Steel
Secondary Heat Exchanger: Stainless Steel
Domestic Water Heat Exchanger: Stainless Steel
Venting
Exhaust
2 in or 3 in PVC, CPVC, Polypropylene
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C)
Intake
2 in or 3 in PVC, CPVC, Polypropylene
2 in or 3 in Special Gas Vent Type BH (Class III, A/B/C)
Vent Clearances
0 in to combustibles
Safety Devices
Flame Rod, APS, Gas Valve Operation Detector, Ignition Operation Detector, Water
Temperature High Limit Switch,
Exhaust Temperature High Limit Sensor
Note
This unit may be installed at elevations up to 10,100 ft (3,078 m) for use with Natural Gas, and up to 4,500 ft (1,370 m) for use with
Propane.
Temperature Setting Range
Item
Temperature Setting Range
Remarks
DHW
86-140°F
Space Heating
Supply
86-140°F
Finned Tube Baseboard (Default)
Return
86-140°F
Note
For more information about space heating temperature setting range, refer to “Types of Heat Load” on page 53.
