WebDDC building automation inputs measure a medium or monitor the HVAC systems such as smoke detectors and high/low limit switches. DDC inputs measure temperature, … WebMay 27, 2024 · Johnson Controls Inc. Announcement Discontinuation of the WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Due to a supplier …
Controls— Options DDC
WebJun 10, 2012 · Our wireless pneumatic thermostat is a really unique solution for pneumatically controlled HVAC systems. It is fully functional Direct Digital Controls (DDC) thermostat which can replace most of the thermostats on the market and easily retrofits existing pneumatic HVAC infrastructures. WebWT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Product Bulletin 6 WT-ROUTER Router Power Requirements External DC Supply: 5 to 30 VDC from the power adaptor (included with the router) Minimum Supply Voltage: 3.1 VDC Wireless Band Direct-sequence, spread-spectrum, 2.4 GHz ISM band Operating Frequency … city of st john canada
Direct-Digital-Control (DDC) Pneumatic Thermostats
WebMar 28, 2024 · What is a DDC thermostat? direct digital control (DDC) thermostat. A design in which PTC or NTC thermistors are used to sense the air temperature and transmit an electrical signal, measured in millivolts, back to the building energy management system. What is DDC building management system? WebTrane DDC–UCM operate in a pressure-dependent (PD) mode of operation. • Cooling and heating control action of air valve. In cooling control action, the DDC controller matches … WebThe Johnson Controls WT-4000 Series Pneumatic-to-DDC Thermostat facilitates low cost conversion from pneumatic HVAC control to energy efficient Direct Digital Control (DDC) … city of st james mo