This relay is frequently found in CB29M and HP21 series units

The Emerson Alco 806730 is a high-performance 1/4" ODF sweat refrigeration ball valve engineered for critical isolation in HVACR systems

it provides integral boiler return protection via mixing valve control or variable speed injection

Avoid the "fluff" of universal kits and rely on a Johnson Controls replacement part built for HVACR valve maintenance and long-term diagnostic stability

it is recommended to mount the solenoid vertical and upright to prevent debris accumulation in the core tube area

Daikin-McQuay 4022330 Control Board 318172-701 This relay is frequently foundThe Daikin McQuay 4022330 Control Board is a critical OEM replacement circuit board engineered for high performance management within Daikin McQuay HVAC systems and industrial chiller units. Designed to function as the central processing hub, this 4022330 PCB monitors real time data from temperature sensors, pressure transducers, and flow switches to regulate essential components like compressors and condenser fans. Its advanced architecture ensures