Intermatic T174 Timer Refrigerant The Schneider Electric AT-1104 is

The Schneider Electric AT-1104 is a heavy-duty cast aluminum thermostat guard designed to protect wall-mounted controls in high-traffic commercial or industrial environments

ensuring no modifications are required during installation

or draft inducer failure that allows heat to back up into the burner area

While it fits RA-series radiator valves and RA2000 manifolds

this model is specifically an "open on rise" control

Intermatic T174 Timer Refrigerant The Schneider Electric AT-1104 isThe Intermatic T174 Mechanical Time Switch is a heavy duty, 24 hour solution designed for demanding commercial and industrial energy management. Operating on a 208 277V AC input, this DPST (Double Pole Single Throw) 40 amp timer provides reliable control for high amperage loads like HVACR equipment, industrial lighting, and water heaters. As part of the prestigious Intermatic T170 Series, "The Skipper" features a unique 7 day skip a day dial, allowing