Siemens Room Thermostat, Pneumatic, Day & Night Direct Acting, Fahrenheit

This thermostat is a proportional single output, dual set point, 2-pipe or 3-pipe (high air capacity) sensor controller. It automatically resets the room temperature set point during unoccupied hours by changing the air pressure to the thermostat. A manual override feature allows occupants the ability to switch to day mode. The override returns to night mode the following night. This unit includes a wall mounting plate for installation in a variety of rough-in terminal boxes. Order with 192-252.

• Manual override selector for off-hour occupant comfort
• Adjustable changeover pressure
• Integral, field adjustable limit stops
• Test port for fast check of output pressure without removing the cover
• Field replaceable thermometer, set point dial, restrictor and filters