INSTRUCTION SHEET for Universal Replacement Thermostats PNT Electrical Shock Hazard Disconnect power before servicing. Replace all panels before operating. Failure to do $0 can result in death or electrical shock. This is an FSP approved design thermostat for use as a replacement for original applications. Adjustable shaft NOTE: Coupling is in the off position. if different off position is required, loosen setscrews in the shaft. Turn the shaft to the required position and tighten setscrews. 1.