Pneumatic Thermostat Reverse Acting w/ Day/Night Operation, Heating, TP971B2043

Note: Cover must be ordered seperately. Pneumatic thermostat gives comparable control of pneumatic valves and damper actuators in heating & air conditioning systems. Replacement kits available for Johnson, Powers, Robertshaw, Barber-Colman, and past Honeywell 2-pipe pneumatic thermostats. Features:Changeover Pressure (psi): Day 20 psi, Night 25 psi Durable TP970 series thermostat Pilot operated for high capacity. Direct Acting (DA) and Reverse Acting (RA) models are available. Three-pipe thermostats are available for unit ventilator applications where the outdoor damper must operate when the thermostat is manually set to day operation. Adapter plate in thermostat kits covers existing thermostat watermark. Backplate has molded air connections-no separate fittings needed. Universal Locking cover with satin chrome finish and horizontal, vertical, or blank window options-other covers available.