Preventive Maintenance & Calibration Frequency
Sugggestions for Thermostats

Calibration Chart Thermostat Type Annual Semi-Annual Extra* Single Temp X X Day-Nite X X Hate-Cool X X School-Stats Single and Day-Nite X X * VIP Areas, Operating, Clean Rooms, Etc.

Frequency** for Maintenance Material Replacement Thermostat Type Filter Restrictor Nozzle & Pin Supply & Exhaust Valve Humidity Element Pneumatic Stats A A School-Stats A 5Y

** Frequesncies listed pre-suppose a clean air supply.
Frequency: A=Annually, 2Y=every two years, 5Y=every five years.