Description
The Johnson Controls T-4002-304 is a pneumatic thermostat appropriate for use in homes and offices as it controls the temperature. It is not like digital thermostats but it uses changes in air pressure to control your heating and cooling system. They included a conversion kit that makes it easy to replace existing two-pipe thermostats from other competitors. This is a beige-colored thermostat that has an easy-to-use touch screen with an adjustable temperature range of 55°F to 85°F. On this it uses a reverse acting mechanism by reducing the pressure of air leads to heating and increase in pressure cools it. The barbed connections are 5/32″ to fit perfectly with your existing air lines to avoid slippage. There are several advantages of this pneumatic thermostat.
