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the 100110984 is the official manufacturer-designated updated version for 9006201205
and 48HCDD125A models
it ensures the system achieves the necessary negative pressure to vent combustion gases safely before allowing the gas valve to energize
Designed to meet exact OEM tolerances
excessive soot buildup from poor combustion air
Tjernlund Products WHKE Control Interlock 322057-301 the 100110984 is the officialFor 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
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