this is a single stage 1H/1C controller

maintaining a fixed 1/8-inch spark gap to ensure consistent ignition cycles

Does this include the entire actuator head

typical concealed installations require a separate mounting bracket and wallbox

this specific model does not have an "off" position

Johnson Controls T-4506-203 Thermostat Refrigerant this is a single stageThe Johnson Controls T 4506 203 is a professional grade dual temperature pneumatic thermostat engineered for high performance HVAC control systems requiring direct acting logic. Designed for horizontal mounting, this unit facilitates seamless day night or heating cooling transitions with a 17 psig switchover pressure. With a robust 400 SCIM flow capacity and a highly efficient 20 SCIM air consumption rate, the T 4506 203 ensures precise terminal