IFW
IFW
Indirect Fired Weatherproofed Space Heater
The Applied Air outdoor IFW unit offers complete flexibility to the engineer and owner to meet any design need. Controls can be set up for space heating, make-up air or a combination of both. The IFW indirect fired space heater is a vertical pad-mounted unit with weatherproof enclosures over the controls and burner sections.
The IFW unit has air handling capacities from 3,500 to 94,000 CFM and heating capacities from 350,000 to 6,000,000 BTUH output.
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DDC Controls Are Optional
Patented Precision
The IFW is capable of more precise temperature control and real time on-board diagnostics thanks to the patented Adaptaire DDC control system (Patent #7,059,536). Interfacing with local networks is made easier since the Adaptaire system supports BACnet, LON, N2, and Modbus.
Touch Screen Interface Option
Convenient Control and Diagnostics
In addition to the precision and sophistication of the Adaptaire DDC control software, Applied Air has implemented a touch screen operator interface for quick access to operating conditions, diagnostics, setpoints, and schedules.
Weather Resistant Enclosure
Outdoor Installation Flexibility
IFW units utilize a weather resistant cabinet to enclose the gas burner, induced draft fan, and the controls. This enclosure has hinged access doors and louvered panels that provide outside air for proper combustion and cooling of the controls.
4-Pass Drum and Tube Heat Exchanger
Maximum Heat Transfer Surface Area
The Applied Air IFW system 4-pass heat exchanger consists of a large primary section and a secondary section of multiple tubes depending on the capacity you require. The sections are connected via collector boxes at the ends of each pass. Both sections of the heat exchanger are manufactured of 400 series stainless steel. The primary section is rolled, and seam welded in the Mestex factory in Dallas. All seams are continuous welded in the factory and tested for leaks. The primary section has a pressure relief and visual inspection port. The secondary section includes a condensation drain port.
Powered Combustion Burner
Efficient Air/Fuel Mixing and Combustion
The combustion burner has an integral blower and motor, air proving switch, and pilot assembly. There is also a combustion air damper that is interlocked with the gas control valve in order to produce the proper air/fuel mixture throughout the operating range.
Factory Assembled Gas Train
Tested and Ready to Fire
The factory wired and assembled gas train consists of low pressure gas regulator, motorized gas control valve, main gas shutoff valve, pilot pressure regulator, and pilot gas shutoff valve.The burner controls can be On/Off, Hi/Low/Off, or Fully Modulating.
Induced Draft Fan Extracts Combustion Products
Venting Combustion Products to the Atmosphere
A direct drive motor spins the fan in the induced draft assembly and vents the combustion products to the atmosphere. The entire assembly (less the moror itself) is manufactured in the Dallas factory. The fan is of a non-clogging, radial blade design. The assembly also includes a manual damper with locking quadrant so that it can be adjusted during the startup process to assure proper induction.
V-Bank Filters Optional
Clean Filtered Air
The Applied Air IFW has the option of a V-bank filter bank for clean tempered air entering the space. The filter bank has racks that will accommodate 2" filters with up to MERV13 ratings.