Freeze Stat - GRAA Updated January 29, 2026 15:58 GRAA The freezestat has a temperature and time dial on it. Adjust the time and temperature if needed. Sensing element should be located as far downstream as possible from the heat exchanger. 4457_C - TEMPERATURE CONTROLLER & TIMER, FREEZESTAT, TCT PDF Articles in this section DX cooling option with A2L sensor- GRAA Sterling unit GRAA Heat exchanger removal Freeze Stat - GRAA Horizontal/Vertical Combustion Air Inlet Kit VFD- Lenze Drive information Maxitrol SC11 - 0-10 VDC controller for GRAA Indoor Duct Furnace/ Vent piping- GL, GG or GZ High limit and safety limit function - GRAA or Rooftop Sterling Heaters OD Air control with Siemens Controller RDG400 Minimum Position Function Modulation Valve Pressure Adjustment Procedure See more Related articles Evaporator Defrost Control *LCU ReliaTel RTRM LED2 Diagnostic Testing Tracer TD-5 Display for ReliaTel Controller Manual Gas pressure requirements for the GRAA and GSAA Dirty Sock Syndrome