Commercial Boilers - Gas Boilers Cast 92-4™ Boiler

The Series Cast 92-4™ is a gas-fired, condensing cast iron boiler with a thermal efficiency of 92.7%. The cast iron heat exchanger retains heat longer for extreme durability. The cascade ready Cast 92-4™ is environmentally friendly with low emissions for both CO2 and NOx and features quiet operation. The boiler’s compact, space-saving design makes it perfect for replacing older, larger, less-efficient cast iron boilers.




Product Details:

Type: Commercial or Large Residential
Construction: Cast Iron
Fuel: Gas-Fired (Natural or LP)
Input: 80 to 399 MBH
Output: 74 to 370 MBH
Venting: Sealed Combustion, Direct Vent
Trim: Water
Combustion: Direct Spark


Boiler Model Number Input, Btu/hr Output, MBH Gas Pressure, W.C. Voltage Flow GPM Temp. Rise (°F) Vent Length, Equiv. Ft. Air Inlet Length, Equiv. Ft.
Min Max Min Max Min Max Min Max Min Max
92-4 399 370 2″ 14″ 120VAC/60Hz/IPH 4** 72 20 100 0 100 0 100
Water Volume, Gallons Flue Dia. Current FLA, Amps Boiler H.P. NET Ratings, Btu/hr Thermal Efficiency, % Combustion Efficiency, %
7.125 4″ 5 10.6 322 92.7 87.7

**At 100% Input