DFL

DFL

Commercial Direct Fired Climate Control System

The DFL direct fired gas heating system from Applied Air adds up to 16,000 CFM of warm, fresh and clean air to your work environment. The direct fired design results in 100% efficiency of combustion and no harmful by-products. As a result, the DFL costs about 20% less to operate and maintain than indirect gas heat.

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Direct Fired

Features

  • Wide array of air outlet configurations. Horizontal, vertical, left facing, right facing, top discharge, bottom discharge...you select to meet your needs.
  • Wide array of factory options. 100 percent outside air, return air, mixed air, control options...you select to meet your needs.
  • Control options include DDC controlled modulating discharge temperature, DDC controlled modulating room temperature, non-DDC controlled modulating discharge temperature, non-DDC modulating room temperature.
  • DDC controls feature touch screen interface with real time monitoring of operating parameters and on board diagnostics.
  • Double wall access panels with full length hinges and full perimeter bulb gasket for best leak protection.
  • Optional filter section with up to MERV 13 filters for cleaner air entering the space.
  • Optional factory roof curb designed to minimize roof penetrations with unit overhang and full perimater support.
  • Air delivery options include standard AC motors with forward curved fans or AC motors with VFD control
  • Built in return air flow station to assure safe operation of direct fired heat when using mixed/return air.
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Literature

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Literature Library

DDC Controls Standard

Patented Precision

The DFL 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.

Zone Controller
Touch Screen

Advanced Operator Interface

Touchscreen Convenience

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.

Perimeter Curb

Unit Overhang for Fewer Leaks

The entire unit is mounted over the curb, so there's no place for rain to get inside.

DFL
DFL Damper-Actuator

Direct Drive Actuator

Repeatable Positioning

There's no linkage to bind, plus the actuator is mounted inside away from the weather.

Blade & Jamb Seals

Reduced Air Bypass

The seals and the dampers provide an airtight enclosure. A shutoff damper should be able to limit infiltration of cold outside air when the unit is off. Including edge and jamb seals on the DFL dampers matches the industry standard procedure for achieving low leakage and infiltration.

DFL Damper Edge and Jamb Seals
DFL Inlet Damper-Actuator

Shut Off Damper

Code Compliance

Most building codes call for a shut off damper, so we include one as standard equipment.

Roof Overhang

clever Detail for Fewer Leaks

DFL designers work closely with Applied Air engineering and service to add product details that minimize trouble for the owner. A simple thing like designing a 2 inch roof overhang might cost a little more to manufacture but the overhang comes in handy when it is raining and water tends to run down the side of units without this detail. That surface water is more easily entrained into the unit and then into the building.

DFL Roof Overhang
DFL Corner Lifting Bracket2

Structural Tube Frame

Cabinet Strength

Our 1" aluminum tube frame increases strength and improves the unit's structural integrity. You can be confident the DFL can withstand the test of time. Cabinet panels are inset into an extruded flange and fastened from the inside to minimize the chance for air and water intrusion. This assembly method also makes the DFL capable of up to 2.5 inches of external pressure...highest in the class of equipment.

Unit Base

Strength Without The Weight

The shape of the extrusion provides a built in mounting point for a roof curb, making installation faster and more convenient.

DFL Base Frame Cutaway2 Obsolete
VFD

FACTORY MOUNTED AND WIRED VFD OPTIONAL

Match Fan Speed to Demand

The already lower operating costs of the DFL unit can be further enhanced with the optional VFD for the supply fans. Building thermal loads can vary widely, especially in very large warehouses and factories that might be operating 24/7. Adding the VFD option to the DFL, and integrating it with the Adaptaire DDC system, can result in significant operating cost savings by matching fan speeds to the demands of the building.

V-BANK FILTERS OPTIONAL

Clean Filtered Air

The Applied Air DFL 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.

partial vbank
DFL Door, Hinge, Gasket3

Standard Hinged Doors with Bulb Gasket

Easier Maintenance

To access the unit for service, simply open the door. There are no access panels to remove and replace, and the bulb gasket keeps out the weather.