Reset Volume Controller, Thermostat Required for Cooling Direct/Reverse Acting, Thermostat Required for Heating Direct/Reverse Acting, Reset Start Point Factory Setting 5 psi, Minimum Air Pressure 15 psi, Maximum Air Pressure 30 psi, Minimum Setpoint Range Minimum 0 to 2 in wc, Maximum Setpoint Range Min to 2 in wc, Reset Start Point Minimum Setting 0 psi, Reset Start Point Maximum Setting 10 psi, Air Consumption 46.1 scim, Signal Pressure - Maximum 6 in wc Universal replacement for more than 85% of OEM-supplied direct- and reverse-acting pneumatic VAV volume-reset controllers shipped since 1980.