Johnson Controls P72NA-1 Pressure Control 30067439-890 serving as a vital protection

serving as a vital protection mechanism for evaporator coils and refrigeration circuits

this 15 AMP fusible link serves as a primary defense against furnace or air handler overheating

though it is standard practice to verify the condition of the secondary heat exchanger interface during installation

The 109291 is specifically calibrated with a "C" charge for R22

pulling approximately 0

Johnson Controls P72NA-1 Pressure Control 30067439-890 serving as a vital protectionJohnson Controls P72NA 1 Two Pole Dual Pressure Control, DPST, 20" Wc to 100 Psi Low Pressure Range, Lockout ( Requires Manual Reset ) Differential, 100 Psi to 425 Psi High Pressure Range, Lockout ( Requires Manual reset ) Differential, 36" Capillary with 1 4" Flare Nut, Includes Adjustment Knob and Mounting Bracket, " All Range " for R 12, R 22, R 134A, R 500 and R 502