Intermatic Fireman Switch Kit, Heater Control | 156T4042A

What This Part Is Used For
The Intermatic 156T4042A is a fireman switch kit used to control pool heater shutdown timing. It is typically installed within a timer enclosure to turn off the heater before the circulation pump stops.

Why This Part Matters
A fireman switch allows the heater to cool down properly before pump shutdown. Without it, residual heat can cause stress on internal heater components. Over time, improper shutdown can contribute to premature wear. This kit supports safer coordinated operation between timer and heater.

Key Features and Specifications

• Manufacturer part number 156T4042A
• Fireman switch heater control kit
• Used with compatible Intermatic timer systems
• Coordinates heater shutdown before pump off cycle
• Designed for pool and spa heater integration

Installation and Fitment Guidance
Install inside a compatible timer enclosure according to manufacturer wiring instructions. Verify heater compatibility prior to connection. Confirm by manufacturer part number before ordering.

About the Intermatic Brand
Intermatic timer systems are commonly paired with gas and electric pool heaters. The brand provides accessory kits to enhance safe system coordination. Their components are built for straightforward integration and service access. Intermatic remains a standard in equipment pad control design.

Common Service Context
Technicians add or replace a fireman switch when upgrading timer systems or replacing heaters. It is often recommended during heater installations to ensure proper shutdown sequencing.