Ok i read a little on the fan limit control concept.
White rodgers fan center wiring diagram.
All wiring must conform to local and national electrical codes and ordinances.
Louis missouri 63123 5398 part no.
Click to enlarge any image adapted from the white rodgers 5d51 installation instructions cited here.
Line voltage connections are pre wired.
I looked on this page and found the following diagram.
Wiring diagram for the white rodgers fan limit control used at line voltage.
White rodgers division emerson electric co.
White rodgers 90 113 single pole double throw spdt fan control center is a transformer and relay combination for easy installation on a 4 x 4 junction box.
The limit is a high temperature safety limit i guess.
The original heater diagram shows one side black v but i can t figure where black from relay goes where the black for transformer goes 3 wires in that.
9797 reavis road st.
Includes low voltage connections on terminal board.
The explanation is for a honeywell fan limit control but it seems similar enough to the white rodgers device i an using.
Wiring diagram for the white rodgers fan limit control used with low voltage equipment.
37 5786a 9716 this control must be installed by a qualified installer.
I m replacing a white rodgers fan control on my furnace.
Fan control centers printed in u s a.
Do not use on circuits exceeding specified voltage.
Thermostat wiring details connections for the white rodgers brand of room thermostats.
Transformer and relay combination for easy installation on a 4 x 4 junction box.