Zonefirst MMZ3 Control Panel 30067439-890 Always verify the specific series

Always verify the specific series suffix to ensure a correct manifold match

Precise Signal Accuracy: The 1k ohm platinum element provides high-fidelity resistance feedback for critical climate control loops

this valve utilizes an equal percentage flow characteristic in the A-port to ensure linear heat transfer

contractors ensure that their air conditioner service and HVAC repair projects meet precise manufacturer specifications for flow rate and volume capacity

Field-adjustable via a calibrated scale

Zonefirst MMZ3 Control Panel 30067439-890 Always verify the specific seriesThe Zonefirst MMZ3 is a purpose built zoning control panel engineered for single stage heating and cooling systems. As the direct replacement for CMM 3 legacy boards, the MMZ3 provides seamless modularity for managing 2 or 3 independent zones with 24Vac 2 or 3 wire damper actuators. This panel features advanced surface mount technology for maximum reliability and utilizes color coded, screwless terminal blocks to significantly reduce installation time