York S1-024-36024-000 Heat Sequencer Relay

The York S1-024-36024-000 Heat Sequencer Relay is a component that regulates the power of electric heaters. This relay sequencer is developed to control the activation sequence of several heating elements in the 6HK Series to turn them on and off in turn. This sequential activation prevents the so-called micro-switching of the electrical circuit and ensures a proper and efficient operation of the heating system. In a typical split-system cooling or heat pump design the heat sequencer relay is used to turn on the electric heater elements in stages rather than all at once to allow the system to operate smoothly and to increase the life of the equipment.