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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
day/night setback controls
the controller will adjust the outside air damper to protect the coil from freezing
This allows the mechanical temperature control to manage fans
Precise Thermal Cycling: Features fixed setpoints at 26°F (Open) and 41°F (Close) for consistent freeze protection
Common checks include ensuring 24V power at the R and C terminals and verifying that the blower motor receives the correct signal from the board upon a call for heat or cool
Resideo SV9501M2528 Gas Valve 30067439-890 day/night setback controlsThe Resideo SV9501M2528 SmartValve Gas Valve is a technical grade intermittent hot surface pilot ignition control, serving as the critical sequencing hub for gas flow and flame sensing. Designed to replace legacy Honeywell SmartValve models like the SV9500M2645 and 1170430, this standard opening valve is compatible with Q3450 or Q3480 intermittent pilot burners. It features an integrated electronic intermittent pilot sequencing control, eliminating