the 33ZCT55SPT mounts to a standard 2x4 NEMA junction box and requires only a single twisted shielded pair (TSP) for both temperature data and override signals

Optimized Performance: Facilitates the continuous drainage of condensate at saturation temperature to maximize heat transfer

including models like the PV8B16N080DH11D

Precision Performance: The 1/2" x 3/4" configuration with a lift lever actuator provides manual testing capabilities required by most local boiler jurisdictions

as these issues often mimic a failed pressure switch

Resideo DS06-103-DUS-LF Pressure Regulating Valve 322057-301 the 33ZCT55SPT mounts to aThe Resideo DS06 103 DUS LF is a professional grade 1 1 4" DialSet pressure regulating valve designed for heavy duty potable water and irrigation service. This lead free bronze PRV utilizes a balanced seat design to maintain consistent downstream pressure regardless of fluctuations in the 250 psi maximum inlet pressure. Featuring a double union sweat connection, this valve allows for rapid installation and serviceability in tight mechanical spaces.