WHITE-RODGERS 13891 White Rodgers Snap Disc Limit Control, 250 to 290 Degrees F Range (Open on Rise).

LIMIT SWITCH 250-290F Range

This Limit Switch controls gas, oil, water, electric and propane burner or heater applications. Adjustable temperature range from 250 to 290 degrees F. Thermostat is rated at 10 amps. Each switch includes a large (1/4" NPT) nickel-plated brass threaded stem and nut for easy pipe connection.

White-Rodgers 13891 Snap Disc Limit Switch, 250 to 290 Degrees F Range (Open on Rise) used to limit the temperature of an expansion tank and heat pump combination to avoid thermal shock, or for preventing an unintentional motor start.

The White-Rodgers snap disc limit control with a 250-290 degree F range is designed for single-stage, both pump and expansion tank applications in homeowners' central air conditioning systems. It operates on line voltage.

Application: Outdoor use on pool heaters. 250-290 F range is for use with 111 series burners and could be used in other applications.

The snap disc limit switch represents the simplest type of limit switch known. It consists of a fixed contact and a movable snap disc. The snap disc is mounted on an adjustable carrier so that it can be moved up against and past the fixed contact point to a set mark. As the disc can be raised above the fixed contact, the contacts will not interlock until the temperature has reached the set point.

A limit control is a safety required for many types of boilers. The White-Rodgers 13891 snap disc limit control shuts off the burner when flame reaches 290 degrees F (White-Rodgers) on rise. This model is installed in a 150 lb. LP tank using 1/4" tubing with 'S' flare x 3/8" MNPT ends. This unit is suitable for solid or liquid fuel gas installations.

This White-Rodgers snap disc limit control is used for electric baseboard and wall furnaces, but is not applicable for boilers or hydronic heating systems. The snap disc limit control is used to control the unit's temperature within a specified range. It uses a snap disc or stamped metal parts allowing continuous operation and positive manual resetting. This limit control comes complete with mounting strap, wire lead terminating in 8-pin straight blade disconnect, terminal screw, lock nut and test button.