Description
Markel Products Co. F120-40F Fan Delay Relay — SKU 28470000
The Markel Products Co. F120-40F Fan Delay Relay (SKU 28470000) is a dependable control component engineered to sequence blower motor operation in electric heating systems. By introducing a timed delay on both fan startup and shutdown, this relay maximizes heat exchanger efficiency, improves comfort, and protects system components from thermal stress.
How It Works
The F120-40F Fan Delay Relay monitors system temperature to determine the optimal moment to energize and de-energize the blower motor. On a call for heat, the relay holds the fan off until the heat exchanger reaches an effective operating temperature, delivering warm air from the first moment the fan runs. On shutdown, the relay keeps the blower running until residual heat is purged from the system — improving efficiency and preventing overheating.
Key Features
- Fan delay relay designed for electric heating and HVAC blower sequencing applications
- Timed fan-on delay prevents cold air delivery at startup
- Timed fan-off delay purges residual heat after burner or element shutdown
- Compact, reliable design for straightforward installation
- Manufactured by Markel Products Co., a trusted name in heating controls
- Direct OEM replacement for compatible Markel heating equipment
Applications
- Electric forced-air heating systems
- Residential and light commercial HVAC equipment
- Blower motor sequencing and control circuits
- OEM replacement in Markel-equipped systems
Why Choose Jackson Systems?
Jackson Systems stocks genuine Markel Products Co. components to keep your HVAC systems running at peak performance. Order the 28470000 F120-40F Fan Delay Relay today for fast shipping and expert support.
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