Raypak 017899F Manual Reset Fixed High Limit Switch 320°F Max

The Raypak 017899F is a manual reset fixed high limit switch designed as an OEM replacement safety component for Raypak boilers, pool and spa heaters, and commercial water heating systems. This critical safety device monitors system temperatures and protects heating equipment from potentially damaging overheating conditions.

When the water temperature reaches the fixed maximum threshold of 320°F (160°C), the switch interrupts the electrical circuit, shutting down the heating system to prevent damage and ensure safe operation. Unlike automatic-reset switches, this manual reset (M/R) design requires a deliberate manual reset once the overheat condition has been identified and resolved — ensuring the root cause is addressed before the system is returned to service.

Key Features:

• Fixed high limit set point — maximum 320°F (160°C)
• Manual reset (M/R) design requires intentional operator reset after trip
• Interrupts electrical circuit upon overheat condition to protect system components
• OEM Raypak replacement part — direct factory fit for compatible models
• Suitable for use in boilers, pool and spa heaters, and commercial water heaters

This is a genuine Raypak OEM replacement part. Always verify compatibility with your specific Raypak model and serial number before ordering. Installation should be performed by a qualified service technician.