Optional Features

  • BTU custom manufactures each Duct Heater with many optional components including:
    • Air pressure switch (positive or negative pressure switches)
    • Circuit fusing under 48 amps, (circuit fusing over 48 amps is standard)
    • Control panel that can be insulated and/or foiled
    • Control transformers (class 1 or class 2)
    • Delay between stages
    • Pneumatic switches company per stage/and fan controls
    • Mercury contactors, (quiet relays)
    • Flanged plenum construction (flanged mount duct system)
    • Pilot relays
    • Non-fused or fused interlocking disconnect switch
    • SCR controls
    • Thermostat (wall, duct, remote sensor/temperature sensor, proportional, on/off temperature controller (PID)
    • Step controller
    • NEMA 4, Nema 4X or 12 panel
    • Special construction/dimensions/bottom mount
    • Square to round section
    • Backup contactors
    • Recessed control panel
    • Pilot light (stage, no air, etc.)
    • Toggle switch (not a disconnect)
    • Remote control panel
    • Breaker as disconnect or circuit protection
    • Extra low watt density open coil heating elements
    • Single point line connection
    • Motor starter
    • Control panels