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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
The York S1-9951-0931 is a precision-engineered LP Gas Orifice designed for specific burner manifold applications in York
Key Benefits: Precise Flame Supervision: Employs advanced circuitry for reliable HVAC flame sensing and automated gas shut-off
For systems requiring a specific 3-try safety lockout sequence
For ease of field installation
always verify the specific model number of the air handler to confirm this bracket meets the required mounting hole pattern
Hoffman Controls 865D Control Els PW 17895 The York S1-9951-0931 is aThe Hoffman Controls 865D is a high performance, microprocessor based three phase head pressure control engineered for low ambient operation in commercial HVACR systems. Serving as the direct replacement for the 865 3AA series, this controller utilizes advanced phase rotation detection to safeguard equipment against phase irregularities and ensure proper motor orientation. By dynamically modulating the condenser fan speed, the 865D maintains optimal
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