Honeywell L4064B2236 Universal Combination Fan and Limit Controller 8"

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For control of high limit and fan motor in all types of forced air heating systems. Available in a variety of fan and high limit setting ranges.
SKU: 40648090
MFG: L4064B2236
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  • 8" x 203MM.
  • Surface mount.
  • Closes fan/opens limit circuit on temperature rise.
  • 200 deg. F limit stop.
  • Screw terminal adapters, zinc plated cover.
  • Tradeline model.
  • Three wiring terminal options available for easy installation:
  • Push-in receptacles for stripped wire.
  • Female receptacles for 1/4 in. male flag connectors.
  • Field add-on screw terminals.
  • Controls adapt to many competitive mounting holes in replacement applications.
  • Available in a variety of fan and high limit setting ranges.
  • L4064B,W models have manual fan switch that overrides fan control to keep fan running continuously.
  • TRADELINE models with mounting adapters for easy installation and strain relief bushings to protect wiring from field abuse.
  • Includes two lead wires with male terminal, four add-on screw terminals, two jumpers for fan and limit interconnect.
  • UL and CSA listed.
  • Boxed.




  • Application: Forced warm air heating systems
  • High Limit Temperature Range (F): 100 to 250 F
  • Fan on Range: 65 to 215 F
  • Fan off Range: 50 to 200 F
  • High Limit Stop: 200 F
  • Low Limit Stop: 100 F
  • Fan on Stop: 100 F
  • Switching Action: Fan switch makes and high limit switch breaks on temperature rise.
  • Electrical Rating(AFL): 14 A @ 120 Vac
  • Electrical Rating (AFL): 7 A @ 240 Vac
  • Electrical Rating (ALR): 84 A @ 120 Vac
  • Electrical Rating (ALR): 42 A @ 240 Vac
  • Electrical Rating Limit (AFL): 4 A @ 240 Vac
  • Electrical Rating Limit (AFL): 8 A @ 120 Vac
  • Electrical Rating Limit (ALR): 24 A @ 240 Vac
  • Electrical Rating Limit (ALR):48 A @ 120 Vac
  • Operating Temperature Range: -40 to 190 F
  • Differential Temperature: High limit 25 F
  • Maximum Ambient Temperature (F): Switch: 190F; Sensing Element: 350 F
  • Comments: Turns fan on and off according to plenum temperature. With helical bimetal sensing element. High limit stop set at 200F (93 C). With manual fan switch. Deluxe cover. Replaces L4064A,B,E.


MFR: L4064B2236
SKU: 40648090
UPC: 085267000215
Brand: Honeywell