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

© 2013 Bel Thermal Units, Inc.
Bel Thermal Units, Inc. "BTU" 4810 NW 35th Avenue Miami, Florida 33142 | Phone: (954) 566-0043 | Fax: (954) 563-7941 Email: btu@belthermal.com

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