Engineered as a SPST normally closed switch
Use this part to restore the factory-specified firing rate in Weil McLain hydronic heating systems
Ensures high-integrity electrical signals across HVAC system components
This switch is frequently utilized in 3-ton to 5-ton rooftop and packaged units
verifying the 24-volt signal from the integrated control board is essential
Johnson Controls P72DA-1 Pressure Control 30067439-890 Engineered as a SPST normallyTwo Pole High Pressure Control, DPST, Open High Close Low, 50 Psi to 450 Psi, Lockout ( Requires Manual Reset ) Differential, 36" Capillary with 1 4" Flare Nut, 525 Psi Max Bellows Overpressure, Includes Universal Mounting Bracket, "All Range" for R 12, R 22, R 134A, R 500 and R 502