Description
The Copeland 3F01-180 is a snap disc fan control calibrated to close on a temperature rise at 180°F, providing automatic blower enable switching for gas furnaces and heating equipment where the supply air fan must be held off until the heat exchanger reaches a minimum temperature threshold sufficient to deliver warm air to the conditioned space. The close-on-rise action at 180°F completes the blower motor circuit when the heat exchanger surface or supply air temperature climbs to the set point, preventing the distribution of cold or lukewarm air through the duct system during the furnace warm-up period at the start of each heating cycle. The 180°F set point is consistent with the upper range of typical furnace fan-on temperature thresholds, making the 3F01-180 appropriate for applications where a higher heat exchanger surface temperature is required before blower enable, such as installations with larger heat exchanger mass, higher static pressure duct systems, or equipment configurations where earlier fan-on at lower temperatures has resulted in comfort complaints from cool air delivery. The disc mounts directly to the heat exchanger surface or supply air plenum for accurate contact temperature sensing. As an OEM-quality White-Rodgers replacement, the 3F01-180 is a direct-fit service component for gas furnaces and heating equipment specifying a snap disc fan control in this temperature range.
Key Features
- Closes on temperature rise at 180°F to enable blower motor circuit on heat exchanger warm-up
- Prevents distribution of cold or lukewarm air during furnace warm-up at the start of each heating cycle
- 180°F set point suited for applications requiring higher heat exchanger surface temperature before blower enable
- Appropriate for larger heat exchanger mass, high static pressure duct systems, and comfort-sensitive installations
- Direct heat exchanger surface or supply air plenum mount for accurate contact temperature sensing
- Snap disc bimetal element delivers fast, repeatable close-on-rise switching without external power or control signals
- Single-pole switching configuration compatible with standard furnace blower motor control circuit wiring
- OEM-quality White-Rodgers replacement for gas furnaces and heating equipment specifying snap disc fan controls in this temperature range
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