Robertshaw 190-067 Metal Guard you must use the specified

you must use the specified SPDT part to maintain sequence logic

which insulates it from the flame

Key Benefits for HVAC Contractors Direct Compatibility: Seamlessly replaces legacy part numbers CTR1143

Secure Access Control: Includes a dedicated lock and two keys to stop setpoint drifting or unauthorized adjustments

For technicians performing system dehydration or routine maintenance

Robertshaw 190-067 Metal Guard you must use the specifiedThe Robertshaw 190 067 Metal Guard (also known by model number BTG 54 VLW) is a ruggedized solution for protecting critical wall thermostats from physical damage and unauthorized adjustments. Engineered for institutional and commercial environments, this thermostat lock box is constructed from a 18 gauge steel cover and a 22 gauge steel ring to withstand heavy duty use. The hinged cover design allows for easy maintenance access while the integrated