Robertshaw RS9220 Thermostat

The Robertshaw RS9220 is a trade-grade multi-stage programmable thermostat designed specifically for 2 heat / 2 cool systems. This unit provides a seamless field upgrade as the direct replacement for RS5220 models, utilizing a universal sub-base and large terminal blocks that significantly reduce time spent on thermostat wiring during installation. Built for versatility, the RS9220 is compatible with gas, oil, electric, and heat pump systems (without auxiliary/emergency heat), as well as 750 millivolt heating applications. It operates on a standard 24V AC hardwire with a common wire or via battery-operated power, using the easy-access front-load compartment for maintenance efficiency.

For system protection, this dual stage thermostat features a selectable five-minute compressor delay to prevent short-cycling, extending the lifespan of the equipment. The 4.6-square-inch blue backlit display offers high visibility, and the contractor setup menu allows for precise temperature calibration and adjustable setpoint limits. Technicians can configure the unit for 7-day programmable, 5-1-1, or non-programmable operation, ensuring the control profile matches the specific efficiency needs of the site.

Key Benefits

• Multi-Stage Compatibility: Expertly controls 2-stage heating and 2-stage cooling systems with separate O and B terminals for heat pump applications.
• Flexible Programming: Native support for 7-day, 5-1-1, or non-programmable modes allows for tailored energy optimization.
• Contractor-Focused Design: Features a universal sub-base and large terminals for rapid installation and cross-compatibility with legacy series.
• System Protection: Integrated adjustable temperature differential (swing) and compressor short-cycle protection safeguard mechanical components.
• Universal Power Options: Reliable operation via 24V AC hardwire or battery backup ensures settings are preserved during power interruptions.

Common Questions

• Can I use the RS9220 to replace a single-stage thermostat? Yes, while designed for 2H/2C systems, it is backward compatible with single-stage equipment by configuring the installer setup accordingly.
• Does this model require a Common (C) wire? A C-wire is required for hardwired 24V operation; however, it can run entirely on battery power if a common wire is not present in the existing bundle.
• How does this assist with heat pump systems? The RS9220 includes specific terminal designations for O and B, making it compatible with the majority of heat pump systems that do not require auxiliary heat.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.