the 622171 is the official 622171R replacement motor and shares identical technical specifications

When troubleshooting furnace ignition failure or a lazy pilot flame that won't stay lit

the VAL8562 valve supports either mixing or diverting configurations to maintain stable water temperatures and system pressures

also identified as the XB1019MW551B

Johnson Controls T-3111-6 Pneumatic Thermostat Els PW 29614 the 622171 is the officialThe Johnson Controls T 3111 6 Pneumatic Thermostat is a heavy duty, direct acting controller engineered for proportional management of steam or water valves in terminal air conditioning units. As a veteran preferred valve top mounting thermostat, this unit integrates a high sensitivity averaging bulb element (8 foot sensing area) to ensure precise environmental regulation by mitigating the effects of air stratification. Designed for "single