Danfoss 017-521566 RT121 Pressure Switch R-410A hold the zero button

hold the zero button

the regulator must be installed so the vent faces downward (typically the 6 o'clock position) to prevent water

it meets ASME Section IV requirements and is CSA listed to ANSI Z21

while also providing a 30 to 90-second post-purge cycle to safely dissipate residual heat after the burner shuts down

Danfoss 017-521566 RT121 Pressure Switch R-410A hold the zero buttonThe Danfoss 017 521566 RT121 Pressure Switch is a heavy duty single pressure control designed for industrial refrigeration and general process monitoring. Engineered with a changeover switch (SPDT), this unit offers reliable performance in both plant automation and safety alarm circuits. It features a regulating range of 1 to 0 bar ( 14. 5 to 0 psig), making it an ideal choice for low pressure applications requiring precise setpoint accuracy. The