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provided the system voltage and pressure ratings align with the 61-25055-08 specifications
making it compatible with most BAS (Building Automation Systems) and thermostat controllers
This complete boiler combustion blower package is engineered specifically for Ultra 299
As a direct successor that replaces White-Rodgers 21D64-1
Carrier HK42FZ088 Control Board Freon provided the system voltage andThe Carrier HK42FZ088 Control Board is a genuine OEM furnace control board engineered to restore full operational command over residential and light commercial HVAC systems. As an essential integrated furnace control (IFC), this board manages critical sequences including ignition, inducer motor operation, blower motor timing, and safety circuit monitoring. It serves as a direct upgrade for several legacy components, effectively replacing HK42FZ057,
