the P090554 ensures that units like the Williams Monterey and Forsaire series operate within safe thermal output parameters when installed at elevations ranging from 2

it handles an R22 capacity of 4

As a standard direct drive furnace motor

the device can measure oil concentrations as low as 0

Utilizing an OEM Bradford White replacement part eliminates the calibration risks associated with generic alternatives

Tjernlund Products WHKE Control Interlock 320735-701 the P090554 ensures that unitsFor 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