• Indirect Fired Heaters
  • Indirect Fired Heater Charts

Modular Indirect-fired Bent Tube Heaters(F-IBT)

Providing clean and tempered makeup air to meet your application needs. The push-through design ensures that combustion fumes will not enter the fresh air stream.

  • Air Volume: 600 – 13,000 cfm
  • Maximum SP: 4" wg. at standard air density

  • Bent Tube In-Shot Style Furnace with Type 409 Stainless Steel Heat Exchanger
  • 80% Constant Efficiency over Entire Gas Firing Range
  • 6:1 Turndown per Furnace, 28:1 Max
  • Full Electronic Vernier-type Modulation
  • Forced High Fire Start
  • Variable Speed Power-vent Motor
  • Discharge, Space or Building Automation System (BAS) Temperature Control
  • Isolated and Insulated Electrical Controls Vestibule
  • Natural Gas or Liquid Propane Applications
  • Inlet and Manifold Gas Pressure Indicating Gauges
  • Electronic Push Button adjustment for the Modulating Gas Valve
  • High Temperature Limit Switch
  • Flame Rollout Switch with Manual Reset
  • LED Indicators for Troubleshooting
  • Economizer Inlet Air Thermostat
  • Advanced Human Machine Interface (HMI) Controls

  • Electrical Cabinet LED Lights
  • 5:1 Turndown for Propane (LP) per Furnace. 23:1 Max
  • Up Discharge
  • Motorized Intake Damper
  • Remote Control Panel
  • High and Low Gas Pressure Switch
  • Mixing Box
  • Variable Air Volume (VAV) Controls
  • Double Wall Construction
  • Blower on Delay (Heat Exchanger Pre-heat)
  • Freeze-stat Option
  • Fire-stat Option
  • Convenience Outlet
  • Extended Drop
  • Single Point Electrical Connection
  • Control Cabinet Heater
  • Dirty Filter Airflow Switch
  • Auxiliary Starters
  • Roof Curbs
  • Indoor Hanging Cradle
  • DDC Control capability for BACnet MS/TP, LonWorks, Johnson N2, and Modbus Protocol

ETL Listed

The F-IBT Model has been certified by ITS. This certification mark indicates that the product has been tested to and has met the minimum requirements of a widely recognized (consensus) U.S. products safety standard, that the manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up inspections to verify continued performance.

Model F-IBT is ETL Listed under file number 3137380COL-002 and complies with ANSI Z83.8-2006 and CSA 2.6-2006 Standards.

This product may be covered by one or more of the following patent number(s): (United States) 8777119, (Canada) 2776289, or other U.S. and foreign patents pending.

  • F1-IBT-150-G10Indirect Bent Tube Gas Fired Heater with 10" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-150-G10DDirect Drive Indirect Bent Tube Gas Fired Heater with 10" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-200-G10Indirect Bent Tube Gas Fired Heater with 10" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-200-G10DDirect Drive Indirect Bent Tube Gas Fired Heater with 10" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-300-150-150-G10Indirect Bent Tube Gas Fired Heater with 10" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-300-150-150-G10DDirect Drive Indirect Bent Tube Gas Fired Heater with 10" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-400-200-200-G10Indirect Bent Tube Gas Fired Heater with 10" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-400-200-200-G10DDirect Drive Indirect Bent Tube Gas Fired Heater with 10" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-150-15DIndirect Bent Tube Gas Fired Heater with 15" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-200-15DIndirect Bent Tube Gas Fired Heater with 15" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-300-150-150-15DIndirect Bent Tube Gas Fired Heater with 15" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-400-200-200-15DIndirect Bent Tube Gas Fired Heater with 15" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-150-16ZIndirect Bent Tube Gas Fired Heater with 16" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-200-16ZIndirect Bent Tube Gas Fired Heater with 16" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-300-150-150-16ZIndirect Bent Tube Gas Fired Heater with 16" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-400-200-200-16ZIndirect Bent Tube Gas Fired Heater with 16" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-150-18ZIndirect Bent Tube Gas Fired Heater with 18" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-200-18ZIndirect Bent Tube Gas Fired Heater with 18" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F1-IBT-300-150-150-18ZIndirect Bent Tube Gas Fired Heater with 18" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F1-IBT-400-200-200-18ZIndirect Bent Tube Gas Fired Heater with 18" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-200-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-300-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-200-200-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-600-300-300-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-800-400-400-G15Indirect Bent Tube Gas Fired Heater with 15" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-200-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-200-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-300-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-300-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-200-200-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-200-200-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-600-300-300-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-600-300-300-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-800-400-400-20DIndirect Bent Tube Gas Fired Heater with 20" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-800-400-400-20ZIndirect Bent Tube Gas Fired Heater with 20" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-200-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-300-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-200-200-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-400-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F2-IBT-600-300-300-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F2-IBT-800-400-400-22ZIndirect Bent Tube Gas Fired Heater with 22" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-400-G18Indirect Bent Tube Gas Fired Heater with 18" Blower, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F3-IBT-600-300-300-G18Indirect Bent Tube Gas Fired Heater with 18" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-800-400-400-G18Indirect Bent Tube Gas Fired Heater with 18" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1000-300-300-400-G18Indirect Bent Tube Gas Fired Heater with 18" Blower, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1200-400-400-400-G18Indirect Bent Tube Gas Fired Heater with 18" Blower, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-400-24DIndirect Bent Tube Gas Fired Heater with 24" Mixed Flow Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F3-IBT-600-300-300-24DIndirect Bent Tube Gas Fired Heater with 24" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-800-400-400-24DIndirect Bent Tube Gas Fired Heater with 24" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1000-300-300-400-24DIndirect Bent Tube Gas Fired Heater with 24" Mixed Flow Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1200-400-400-400-24DIndirect Bent Tube Gas Fired Heater with 24" Mixed Flow Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-400-25ZIndirect Bent Tube Gas Fired Heater with 25" Direct Drive Fan, 1 Furnace, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burner and Heat Exchanger.
  • F3-IBT-600-300-300-25ZIndirect Bent Tube Gas Fired Heater with 25" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-800-400-400-25ZIndirect Bent Tube Gas Fired Heater with 25" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1000-300-300-400-25ZIndirect Bent Tube Gas Fired Heater with 25" Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F3-IBT-1200-400-400-400-25ZIndirect Bent Tube Gas Fired Heater with 25" Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 1 Furnace1, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-800-400-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1000-300-300-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1200-400-400-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1400-300-300-400-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 28:1 Max Turndown for NG, (23:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1600-400-400-400-400-920Indirect Bent Tube Gas Fired Heater with 20" Blower, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 24:1 Max Turndown for NG, (20:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 1 Furnace1, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-800-400-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1000-300-300-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1200-400-400-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1400-300-300-400-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 28:1 Max Turndown for NG, (23:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1600-400-400-400-400-28ZIndirect Bent Tube Gas Fired Heater with 28" Direct Drive Fan, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 24:1 Max Turndown for NG, (20:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 1 Furnace1, Electronic Full Modulation, Constant 80% Efficiency, and 6:1 Max Turndown for NG, (5:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-800-400-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1000-300-300-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 20:1 Max Turndown for NG, (16:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1200-400-400-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1400-300-300-400-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 28:1 Max Turndown for NG, (23:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F4-IBT-1600-400-400-400-400-30DIndirect Bent Tube Gas Fired Heater with 30" Mixed Flow Direct Drive Fan, 4 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 24:1 Max Turndown for NG, (20:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F5-IBT-800-400-400-925Indirect Bent Tube Gas Fired Heater with 25" Blower, 2 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 12:1 Max Turndown for NG, (10:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.
  • F5-IBT-1200-400-400-400-925Indirect Bent Tube Gas Fired Heater with 25" Blower, 3 Furnaces, Electronic Full Modulation, Constant 80% Efficiency, and 18:1 Max Turndown for NG, (15:1 Max Turndown for LP). Stainless Steel Burners and Heat Exchangers.