Johnson Controls T-4516-201 Thermostat R-410A When you're dealing with a

When you're dealing with a furnace that won't initiate its ignition sequence

The MEMS technology provides higher burst pressure ratings and improved thermal compensation

"U" or "E" serial communication codes on the control board

Compatible with Johnson Controls/PENN System 450

it provides a precise fit for larger 1 1/4-inch pipe diameter applications

Johnson Controls T-4516-201 Thermostat R-410A When you're dealing with aThe Johnson Controls T 4516 201 Dual Temperature Thermostat is a high volume, direct acting pneumatic controller designed for systems requiring precise day night or summer winter changeover capabilities. Engineered for horizontal mounting, this unit features a 400 SCIM flow capacity to handle large branch line loads, ensuring responsive actuation of terminal equipment. Operating on a supply pressure of 13 to 25 psig, the T 4516 201 utilizes dual 55 to