Product Overview
Johnson Controls Pneumatic Room Thermostat (T-4506-204)
The Johnson Controls T-4506-204 Pneumatic Room Thermostat is a dual-temperature pneumatic thermostat designed for individual day and night space temperature control in heating and cooling applications. The thermostat automatically switches between two independently adjustable temperature set points based on supply pressure, allowing separate occupied and unoccupied temperature settings without affecting the alternate set point. The T-4506-204 is a vertical-mount, direct-acting model without a manual indexing switch and is part of the Johnson Controls T-4000 Series high-volume output thermostat family.
Part Details:
- Johnson Controls T-4506-204 dual-temperature pneumatic room thermostat
- Direct-acting control with automatic day/night changeover at 17 PSIG (119 kPa)
- Dual independent temperature set points for day and night operation
- Vertical-mount configuration without manual indexing switch
- High-volume output design with pneumatic feedback and volume amplification
- Two supply/output air connections with barbed fittings for 5/32 in. O.D. polytubing
Documentation:
