The Johnson Controls T-4002-5018 is a high-precision external set point dial engineered for integration with T-4000 Series pneumatic thermostats

technicians should verify if an EPDM "Hi-Temp" variant like the GB-D is more appropriate for the specific thermal load of the system

the high-pressure brass forging is designed to handle the pressures associated with R-410A and other modern refrigerants

For Series 64 or 67

Durable Construction: Forged from corrosion-resistant brass to withstand the rigors of commercial and industrial HVACR mechanical rooms

Nordyne 626610 Rollout Switch The Johnson Controls T-4002-5018 isThe Nordyne 626610 Rollout Switch is a critical safety component designed for precise thermal monitoring in high efficiency gas furnaces. Engineered with a 250 degree F fixed temperature setpoint, this Single Pole Single Throw (SPST) switch provides indispensable protection by breaking the electrical circuit if it detects flames or excessive heat escaping the combustion chamber. As a Manual Reset device, it ensures that a qualified technician must