Siemens Building Technology 357-0003 Thermostat 324846-701 and Lochinvar

and Lochinvar

If the vacuum is sufficient but the SPNO switch fails to show continuity across the terminals

specific combustion air applications may require specialized models

ideal for high-static balanced runtime applications and systems with HVAC economizers

While generic blocks exist

Siemens Building Technology 357-0003 Thermostat 324846-701 and LochinvarThe Siemens 357 0003 Powers Limitem is a heavy duty pneumatic thermostat designed for precise temperature regulation in air handling systems and unit ventilators. As a direct acting remote bulb thermostat, this unit provides a proportional pneumatic signal based on liquid filled sensing technology. This model features a 20F to 100F operating range, making it an ideal choice for low limit control or primary discharge air sensing where a 3 8 inch x 4