MAXIM IFB GAS
Available with combination natural gas and LP burner. (dual gas train with manual switch-over)
MAXIM IFB is a low NOx, vertical fire tube storage water heater combining medium to high recovery capacity and storage in a small footprint. Combustion is provided by a pre-mix, surface burner that produces agency compliant NOx levels. Standard operating control is capable of BAS network communication through a serial connection using ModBus protocol.  
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  • Efficiency
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83% thermal efficiency. Meets ASHRAE 90.1-2007.
Heaters qualify for LEED certification.
125 gallon tank: 400 - 600 and 800 MBH
250 gallon tank: 500 - 600 - 800 - 1000 - 1200 - 1600 MBH
300 gallon tank: 500 - 700 - 1000 - 1200 - 1400 - 1700 MBH
Natural gas or LP individually. Combination burner (switchable between LP and Natural gas) available as an option
Inward-fired surface burner. Premix with proportional gas-air control
Gas trains are ETL compliant and include dual safety shutoff valves and gas pressure regulator in a single valve
Product vents negatively through type B double-wall material. Sidewall vents with power venter assistance (not supplied).
Factory ready to connect to direct combustion air (consult representative for vent lengths).
ETL listed to US and Canadian safety standards.
FM compliant.
ASME, section IV, part HLW stamped and National Board Registered.
SCAQMD listed (NOx levels < 20 ppm on all models)
CSD-1 (GE-GAP) controls optional.
NICKELSHIELD® nickel-plated storage tank -or-
POLYSHIELD® polymer-lined storage tank
Fire tubes are protected by seam-welded sheet copper.
All tank connections are non-ferrous and removeable. Lining protection is not compromised when pipe is threaded into fittings.
NO ANODE REQUIRED OR USED. Click on "TECHNOLOGIES" for more information.
With NICKELSHIELD® nickel-plated tank, standard tank warranty is 10 years.
With POLYSHIELD® polymer-lined tank, standard tank warranty is 5 years.
Three-year warranty against scale failure.
First-year service policy covering freight and labor for warranty covered fault is standard.
Long-life service policy extending freight and labor coverage is optional.