Jumper settings: The Fan 50 comes configured (fig. 1) to replace Suburban® # 232613 and Atwood® / HydroFlame® # 37857 circuit boards in their furnaces with fan control features and is also easily configured to function in the original Dinosaur Fan Control mode (fig. 2)
For 12 VDC Furnaces Only!
*Note: Fan control boards should not be used in DuoTherm® 900 series furnaces that have the thermostat in the ground circuit. DuoTherm® 900 furnaces can be rewired to move the thermostat from the ground side of the circtuit to the positive side of the circuit so that the Fan control features of the Fan control or FAN 50 Plus board can be used.
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| In fig. 1, the blue jumper block is set to work with Suburban and Atwood® / HydroFlame® furnaces with the fan control features. Notice the blue jumper block is on both pins of the mode select jumper. | In fig. 2, the blue jumper block is moved onto1 of the mode select jumper pins. It is now configured to work like the original fan control boards by Dinosaur Electronics for use in other furnaces without OEM fan control boards. |