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This thermostat is specifically designed for Daikin-McQuay FCHB/FCHF
The X666701 corresponds to the updated manufacturing catalog number
This mechanical float-operated control supports a maximum pressure of 150 PSI and features a dedicated pump control switch (SPST) alongside the low water cut-off and alarm switch (SPDT)
Dual-action valve functionality allows for seamless pressure relief and vacuum recovery
Resideo ZD28X10TZ Damper 322838-753 This thermostat is specifically designedThe Resideo ZD28X10TZ is a heavy duty, 28" x 10" parallel blade zone damper engineered for high performance volume control in HVAC forced air systems. Designed for reliability, this rectangular duct damper utilizes a 24Vac synchronous motor to provide precise airflow management, making it the standard choice for contractors integrating with Honeywell Home TrueZONE panels. This model is configured as a power closed spring return open (PC SRO) unit,