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and Coleman split systems or packaged units
each including a built-in Schrader valve depressor for direct connection to access ports without the need for additional adapters
the ignitor-sensor assembly or pilot tube may be fouled with carbon or oxidized
9 inches WC (Water Column)
Trane BRD4721 Board 322057-301 and Coleman split systems orThe Trane BRD4721 is a job ready HVAC control board engineered specifically for high efficiency air handling applications requiring precise 400 CFM management. As a critical component in the sequence of operation, this 400 CFM fan board regulates motor speeds and optimizes airflow across the evaporator coil to ensure peak thermal transfer and system balance. Designed for seamless integration into residential and light commercial Trane air handlers,
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