Listed Options
- AIR PRESSURE SWITCH (Positive or Negative Air PressureSystems)
Note: Fan Interlock relay is deleted in Heaters with an integral Air Pressure Switch. An interlocking type of thermostat or other means is acceptable to start air flow. - OPTIONAL FAN INTERLOCK RELAY with Air Switch
- CIRCUIT FUSING: The choice of Built-in Circuit Fusing or Remote Fuse Panel is offered for most Heaters with 2 or 3 circuits. This flexibility may be advantageous where integral fusing would make the controls box too large for a particular application or where a more convenient fuse location is desirable.
- HEATERS OVER 48 AMPS - Fusing cost is included in Trade Price of the Heater. Built-in Fusing is standard - Remote Fuse Panel must be specified.
- HEATERS 48 AMPS OR LESS - Built-in Circuit Fusing is a specified option.
- CONTROLS COMPARTMENT INSULATION
- STAINLESS STEEL TERMINAL BOLTS, NUTS, ETC Standard in all BTU heaters.
- TRANSFORMERS (Step-down to 24 Volts)
- TRANSFORMERS (Step-down to 120V)
- CONTROL VOLTAGE (24V Control is standard)
- Optional Voltages to 277 Volts are available - SPECIFY VOLTAGE No Charge
- Optional Voltages OVER 277 Volts, Consult Factory
- P.E. (Pneumatic Electric) SWITCHES
- **Heaters with P.E. Switches must also have provisions for Fan Interlock. To satisfy this requirement it is necessary to install one Air Pressure Switch per Heater.See Option #1.
- Note: If the Heater is over 240V a Transformer is also required. See Option 7.
- MERCURY CONTACTORS (For silent operation)
- Heaters 120V to 600V Rating
- Note: Airflow direction must be specified for proper factory mounting of Mercury Contactors.
- Extra LOW WATT DENSITY Elements: For extended element life, low watt density elements can be designed into your heater. Low watt density elements allow the NiCr heating coils to run at significantly lower temperatures, thus sustantially extending heater life.
- Delay between stages.
- Flanged plenum construction
- Pilot Relays
- Non-Fused/fused interlocking disconnect switch
- SCR controls
- Thermostat – Wall, duct, Remote Sensor/Temperature Sensor, Temperature Controller
- Step Controller
- Nema 4, Nema4X or 12 control panel
- Special Construction/Dimensions/Bottom Mount
- Square to Round Section
- Down Flow Construction
- Backup Contactors
- Recess panel
- Pilot Light
- Toggle Switch
- Remote Panel
- Breaker
- Protective Screen Inlet/Outlet
- Disconnect/Full Line Break Contactor
- Single Point Line Connection
- Motor Starter