Siemens Building Technology 188-0030 Thermostat 321894-706 preventing premature belt failure and

preventing premature belt failure and reducing vibration within the cabinet

Counterclockwise Rotation: Matches original equipment specifications for proper fan operation

we recommend verifying if your specific furnace model requires a separate perimeter gasket or RTV sealant for a pressurized seal during installation

Internal Protection: Features a built-in line-break motor protector that guards against high-temperature and overcurrent failure modes

Siemens Building Technology 188-0030 Thermostat 321894-706 preventing premature belt failure andThe Siemens 188 0030 is a heavy duty unit mounted pneumatic thermostat designed specifically for high low temperature control in HVAC terminal units like fan coils and induction units. This TH 188 HC model features a direct acting (DA) heating and reverse acting (RA) cooling sequence, making it a critical component for two pipe changeover systems. Engineered with a bimaterial sensing element, it provides reliable proportional control and pneumatic