Commissioning Accuracy: Enables detailed access to combustion curve settings and error history for faster mechanical service

The kit includes the necessary orifices for both fuel types

Precise Signal Response: Replaces thermal-based radiant sensing with rapid microamp flame sensing for superior system safety and timing

making it suitable for standard low voltage heat-only systems

Technicians utilize this module for its reliable solid-state circuitry

Marvair 30090 Blower Wheel 321894-709 Commissioning Accuracy: Enables detailed accessThe Marvair 30090 Blower Wheel is a high performance OEM replacement part engineered for 3. 5 to 4 ton industrial HVAC units. Built for technicians who prioritize system uptime, this centrifugal blower fan features a dual inlet design and is precisely balanced to minimize shaft vibration and motor bearing wear. When servicing telecommunications shelters or modular offices, utilizing a genuine Marvair 30090 ensures the assembly maintains its original