Product Overview
The SUPCO Q103 Time Delay Relay Sequencer is a field-proven component designed for controlling the operation of heating elements and/or blower motors in electric, gas, or oil heat systems. This sequencer features two switches and is engineered to turn on within 1-20 seconds and turn off within 40-110 seconds, ensuring precise timing for HVAC operations.
Key Features:
- UL and CSA Approved: Ensures compliance with safety and quality standards.
- 24 Volt Control Circuit: Operates on a standard 24V control voltage.
- Five Second Delay Between All Subsequent Stages: Provides a controlled sequence for multi-stage systems, unless stages are designed to function simultaneously.
Setup and Installation
Installation of the Q103 sequencer should be performed by a qualified technician. Ensure all power to the HVAC system is disconnected before beginning installation to prevent electrical shock.
- Power Disconnection: Turn off the main power supply to the HVAC unit at the circuit breaker. Verify power is off using a voltage tester.
- Mounting: The sequencer is designed for DIN Rail Mount. Securely attach the sequencer to the designated mounting location within the HVAC control panel.
- Wiring: Connect the 24 Volt control circuit wiring to the appropriate terminals on the sequencer. Refer to the wiring diagram provided with your specific HVAC system for correct terminal connections. The sequencer has wired connector type.
- Verification: Double-check all connections for tightness and correctness before restoring power.
- Power Restoration: Restore power to the HVAC unit and test the system's operation.
Note: Improper installation can lead to system malfunction or electrical hazards. Consult a professional if you are unsure about any step.
Operating Principles
The Q103 sequencer operates by providing timed delays for the activation and deactivation of heating elements and/or blower motors. This sequential operation helps to prevent sudden power surges and ensures a smooth, controlled startup and shutdown of the heating system.
- Activation Delay: Upon receiving a call for heat, the sequencer initiates a delay of 1-20 seconds before activating the first stage of heating or blower operation.
- Stage Sequencing: If multiple stages are present, the sequencer introduces a five-second delay between the activation of subsequent stages, unless the system design requires simultaneous operation.
- Deactivation Delay: When the call for heat ends, the sequencer maintains operation for 40-110 seconds to allow for proper cool-down or heat dissipation before shutting off.
This timed sequencing optimizes system performance and extends the lifespan of components by reducing thermal and electrical stress.
Maintenance
The SUPCO Q103 Time Delay Relay Sequencer is designed for reliable, long-term operation with minimal maintenance. Regular inspection of the unit and its connections is recommended as part of routine HVAC system maintenance.
- Visual Inspection: Periodically inspect the sequencer for any signs of physical damage, corrosion, or loose connections.
- Connection Check: Ensure all wired connections are secure and free from fraying or damage.
- Cleanliness: Keep the area around the sequencer clean and free from dust or debris that could impede its operation or cause overheating.
Do not attempt to disassemble the sequencer. If the unit is damaged or malfunctioning, it should be replaced by a qualified technician.
Troubleshooting
If your HVAC system is not operating as expected, and you suspect the sequencer may be involved, consider the following common issues:
| Problem | Possible Cause | Solution |
|---|---|---|
| System not turning on. | No power to the sequencer; faulty wiring; sequencer failure. | Check circuit breaker. Verify wiring connections. Test sequencer for continuity (if qualified). Replace if faulty. |
| Heating elements/blower not sequencing correctly. | Incorrect wiring; sequencer malfunction. | Review wiring diagram. Replace sequencer if timing is inconsistent or stages are skipped. |
| System runs continuously or shuts off too quickly. | Sequencer timing issue; faulty thermostat. | Verify sequencer timing. Check thermostat operation. Replace sequencer if timing is outside specified range. |
For complex issues or if you are not comfortable performing electrical diagnostics, it is highly recommended to contact a certified HVAC technician.
Specifications
| Attribute | Value |
|---|---|
| Model Number | Q103 |
| Brand | Supco |
| Connector Type | Wired |
| Mounting Type | DIN Rail Mount |
| Operation Mode | Electric |
| Coil Voltage | 24 Volts |
| Specification Met | CSA, UL |
| UPC | 687152290109 |
| Item Weight | 3.2 ounces |
| Product Dimensions | 0.8 x 0.6 x 0.8 inches |
| Item Package Quantity | 1 |
| Included Components | Sequencer, instructions |
| Batteries Required? | No |
| On Time Delay | 1-20 seconds |
| Off Time Delay | 40-110 seconds |
| Number of Switches | 2 |
Warranty and Support
For warranty information and technical support regarding your SUPCO Q103 Time Delay Relay Sequencer, please refer to the documentation included with your purchase or visit the official Supco website. Keep your proof of purchase for warranty claims.
Contact Information:
- Manufacturer: Suntec (as per product specifications)
- Brand: Supco
- For specific support, please visit the Supco official website or contact their customer service.