KIT-DIFF PRESS SWITCH, HDF400 | HDXFDPS400
Hayward KIT-DIFF PRESS SWITCH, HDF400 (HDXFDPS400) is a differential pressure switch used in the Hayward Universal HC Series HDF400 gas pool heater. It monitors pressure differences within the system to ensure safe and efficient operation.
- Pressure Monitoring:
The differential pressure switch measures the difference in water pressure between two points in the heaters circulation system. It measures the pressure before and after the heat exchanger. - Safety Mechanism:
If the pressure difference falls outside of the acceptable range, it indicates potential issues like: - Inadequate water flow
- Blocked or dirty filters
- Faulty circulation pumps
- In such cases, the switch will interrupt the electrical circuit to shut down the heater to prevent damage or unsafe conditions.
- Flow Verification:
The switch ensures that water flow is present before the burner ignites, preventing overheating or damage to the heat exchanger.
