Crandall Stats & Sensors 2390-501-CSS Switch 322838-752 This high-limit aquastat features a

This high-limit aquastat features a manual reset mechanism

a manufacturer-approved conversion kit involving different springs and orifices is required

This dual-valve safety design incorporates redundant solenoids that require simultaneous energization to permit gas flow

Using this HVAC replacement part ensures a precise fit for residential and commercial heating systems

92 kilowatts of auxiliary heating capacity without the need for extensive field modifications

Crandall Stats & Sensors 2390-501-CSS Switch 322838-752 This high-limit aquastat features aThe Crandall Stats & Sensors 2390 501 CSS is a pneumatic gradual switch designed for 100% manual adjustment of air pressure within HVAC pneumatic systems. This unit provides precise control over a 0 to 20 psig range, allowing technicians to manually select and maintain specific pressure settings for pneumatic actuators, position controlled devices, or remote set point adjusters. As a 2390 501 CSS replacement for YMC 1001, it serves as a direct drop in