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ensuring consistent main burner light-off even in demanding cold-start conditions
remote capillary and sensing bulb for flexible mounting in various ductwork or tank configurations
0 replacement designed for precision airflow control in Lennox furnaces and residential air handlers
The 491225R is the older SKU
Siemens Building Technology 194-2043 Stat 321894-708 ensuring consistent main burner light-offThe Siemens 194 2043 ChasisStat is a professional grade pneumatic thermostat chassis designed for high performance building automation. This Powerstar Retroline item serves as a direct Johnson Controls T 4506 replacement, specifically engineered for 2 pipe systems requiring dual set point control. Operating with a direct acting (DA DA) mechanism, it provides precise modulation for both day and night cycles, utilizing 15 psi and 20 psi air supply
