Description
The Lennox 99K31 Blower Relay is an accessory of the Lennox HVAC systems, it is placed in the electrical compartment of the system. This relay is a switch that is operated by a small current to switch on a larger current. The control circuit within your HVAC system then sends a low-voltage signal to the relay. The relay then energizes the contactor. It is aimed at calling a specific amp range of 2.5 to 4.0 amps to provide the necessary power for the blower motor to operate. This relay is designed for use with 3-phase electrical supplies which are common in commercial or industrial systems.
