Siemens Building Technology 188-0030 Thermostat 321894-706 4 bar on the refrigerant

4 bar on the refrigerant side and 16 bar on the water side

This high-efficiency constant torque motor is pre-configured with correct airflow parameters and torque curves to maintain the static pressure requirements of the HVAC system

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

offering seamless integration and long-term durability in demanding environments where precision and reliability are non-negotiable requirements for system optimization

Siemens Building Technology 188-0030 Thermostat 321894-706 4 bar on the refrigerantThe 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