Tjernlund MAC-1E Interlock ControlTjernlund MAC 1E Interlock Control is a compact interlock solution designed for safe burner operation. This Type Interlock Control is used on universal control systems to ensure reliable shutoff of a single burner circuit spanning 18 to 130 volts. Designed for HVAC and heating applications, the MAC 1E provides a dependable interlock for burner safety. It simplifies retrofits and replacements, delivering dependable protection with a straightforward

Durability: rugged design for long-term reliability

DS05-101-LF by Resideo Honeywell Home is a lead-free pressure regulating valve designed for residential plumbing

simplifies installation

This part supports efficient airflow management and debris protection

benefiting from a dependable solution backed by Grundfos quality

Durable construction to withstand typical HVAC operating conditions

helping compressors start smoothly and maintain overall efficiency

5 LED indicators for at-a-glance status checks

Designed to fit 700-850 models

Compatibility works with a range of standard gas furnace configurations

Designed for the 30685491-004 assembly and reverse 01-11 configurations

M4 LED (Optional)