The Lennox 24K41 (507506-03) CS7500 Series Commercial Touchscreen Programmable Thermostat provides precise and reliable control for both conventional HVAC systems and heat pumps. ASHRAE, IECC, and FDD compliant, this thermostat is designed to support energy savings, simplify service, and maintain consistent comfort in commercial applications.

With 7-day scheduling, automatic changeover, intelligent recovery, and built-in temperature and humidity sensing, the CS7500 offers a flexible and efficient control solution. The thermostat can detect economizer faults through the rooftop unit’s service relay, supporting required FDD regulations and improving serviceability for Lennox commercial equipment.

The 4.3-inch touchscreen display provides clear, intuitive navigation, while customizable reminders help maintain proper system upkeep. Designed as a universal control, the 24K41 is compatible with Lennox non-communicating equipment as well as most major HVAC brands.

Specifications
Brand: Lennox
Catalog Number: 24K41
Model/Part Number: 507506-03
Family: CS7500
Type: Commercial Touchscreen Programmable Thermostat
Wi-Fi Enabled: No Wi-Fi
Programs per Week: 7-Day
Changeover: Automatic
Intelligent Recovery: Yes
Stages: Universal 4 Heat / 3 Cool
Product Height: 3.3125 in
Product Width: 4.3125 in
Product Depth: 0.875 in
Gross Weight: 0.6 lb

Key Features
• ASHRAE, IECC, and FDD compliant for commercial building requirements
• Universal compatibility with conventional systems and heat pumps
• Supports up to 4 stages of heat and 3 stages of cooling
• 7-day or 5/2 programmable schedules for energy savings
• Dual-fuel capability for optimizing gas and electric heating operation
• One-Touch Away Mode for quick energy-saving adjustments
• Intelligent recovery and smooth setback recovery for comfort precision
• Built-in temperature and humidity sensors
• Economizer fault detection via RTU service relay
• 4.3-inch touchscreen display with adjustable brightness
• Customizable service and parts replacement reminders
• Filter change reminders and optional outdoor temperature display
• Compatible with Lennox non-communicating equipment and most major HVAC brands