Siemens Building Technology 188-0030 Thermostat 326010-701 and O-rings—necessary to restore factory-spec

and O-rings—necessary to restore factory-spec sealing and pressure regulation

Key Benefits for Technicians: Vibration Control: The rubber bushing provides an integrated sound-deadening effect by absorbing mechanical vibrations

including the necessary clearance for pilot gas ignitors

including the AFJ series

Siemens Building Technology 188-0030 Thermostat 326010-701 and O-rings—necessary to restore factory-specThe 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