Tjernlund Products WHKE Control Interlock 322057-301 While it is a Carrier

While it is a Carrier part

Designed to meet exact OEM tolerances

it ensures the system achieves the necessary negative pressure to vent combustion gases safely before allowing the gas valve to energize

you ensure the system operates within manufacturer-stipulated refrigerant envelopes

excessive soot buildup from poor combustion air

Tjernlund Products WHKE Control Interlock 322057-301 While it is a CarrierFor contractors interlocking millivolt controlled water heaters with a power venting system, the Tjernlund WHKE Control Interlock is the industry standard for ensuring safe and reliable operation. This kit is specifically designed to interface between gas fired appliances and Tjernlund UC1 Universal Control, MAC1E, or MAC4E auxiliary modules. By sensing gas flow through a vertical mount gas pressure switch, the WHKE signals the inducer to activate