Outdoor Duct Furnaces

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Outdoor Power Exhausted (HFP) Gas Duct Heater

For Space Heating For Dehumidification Systems

The outdoor duct furnace was designed as a building’s heating system. Available in 11 power exhausted model sizes, the unit covers a wide variety of applications. They have input ranges from 75,000 to 400,000 Btu/Hr and can operate on either natural or propane gas. The airflow direction can be specified when ordering the unit. The duct furnace is certified for location downstream from dehumidifier and has holes to drain any condensate that may form onto the roof.

Outdoor Duct Furnaces Standard Features:

• C.S.A. certification for use in the US and Canada
• ETL certification
• All units a minimum of 80% thermally efficient
• 18 gauge aluminized steel cabinet with a baked-on polyester powder paint finish on exterior casing parts
• Single 115V control step down transformer with 24V gas control circuit
• 409 stainless steel heat exchanger and burners
• 409 stainless steel drip pan
• Certified to 3.0” W.C. external static pressure
• Combination combustion air/exhaust vent cap
• Single stage intermittent pilot with continuous retry control system for operation on natural gas
• Separate line voltage and low voltage terminal strips
• Left side (when looking into the discharge) access to burner and gas controls with slide-out burner drawer
• Side or bottom gas connection access
• High limit safety control
• Rail type mounting base for slab installation
• Two-stage gas valve
• Power exhaust
• Natural gas input

Outdoor Duct Furnaces Optional Features - Factory Installed

• Single stage intermittent pilot with lockout control system for operation on propane gas
• Two-stage, mechanical modulation, and electronic modulation controls for propane gas
• Mechanical modulation and electronic modulation controls for natural gas
• Building management compatible gas controls for modulation control using a 0-10 Vdc or 4-20 mA input
• Control step down transformers for 208/230V/1Ph and 208/230/460/575V/3Ph
• Right side access to burner and gas controls
• Adjustable differential air flow proving system
• Fan delay timer
• High and/or low gas pressure switches
• Manual reset high limit switch
• Timed freeze protection
• Supply air fire stat
• Control relay - double pole, double throw
• Multiple furnace electronic amplifier for controlling up to 4 duct furnaces with one discharge air sensor

ALL PRINTED INFORMATION SHOWN SUBJECT TO CHANGE WITHOUT NOTICE