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The TRADEPRO tp-q103 is a Q Series sequencer designed to control the staged operation of heating elements and blower motors in electric, gas, or oil heat systems. Operating on a 24-volt control circuit, it uses timed switching to bring heating stages on and off in a controlled sequence, protecting components from simultaneous inrush loads. The on-delay range is 1 to 20 seconds and the off-delay range is 40 to 110 seconds. A built-in five-second delay between subsequent stages prevents simultaneous activation unless those stages are configured to operate together. Licensed HVAC technicians typically handle installation and commissioning of this component.
The tp-q103 is suited for residential and light commercial electric forced-air heating applications where staged element control is required. It fits into systems that use multiple heating elements or a combination of heating elements and blower motor circuits, providing orderly sequencing to reduce electrical demand spikes at startup. It is commonly installed in electric furnaces and air handler units that use resistance heat strips across a range of capacities.
Designed as an OEM-style replacement sequencer for residential and light commercial electric, gas, or oil heat systems that require staged heating element and blower motor control on a 24-volt control circuit.
Installation should be performed by a licensed HVAC technician. Disconnect all power to the air handler or electric furnace at the breaker before removing or installing the sequencer. Verify that the replacement unit matches the on and off timing specifications of the original before energizing the system. Follow applicable local electrical codes and NEC guidelines when making low-voltage and line-voltage connections.
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