It is critical to follow the manufacturer's wiring diagram

System Protection: Actively monitors flue gas temperatures to trigger safety shutdowns before overheating occurs

providing a dependable solution for contractors requiring OEM-spec Daikin-McQuay replacement parts for complex control voltage configurations

ensuring the unused white (120V) or orange (208V) leads are properly capped

OEM Compatibility: Genuine Lennox 27H87 ensures electrical and mounting compatibility with residential and commercial units

Siemens Industrial Controls 3RK2200-0CQ20-0AA3 Module 320788-702 It is critical to followThe Siemens 3RK2200 0CQ20 0AA3 is a critical AS Interface digital I O module engineered for decentralized control in demanding HVACR and industrial automation environments. This IP67 rated I O module utilizes the compact K45 housing design, specifically optimized for field level installation without the need for additional enclosures. Featuring a 4 input configuration, the unit functions as an A B slave device, allowing for expanded addressing