Honeywell os-100 Outdoor Sensor Kit Warm Weather Shutdown

Product Description

The HONEYWELL os-100 is an outdoor sensor kit designed to enable warm weather shutdown functionality in hydronic heating systems. This sensor monitors outdoor air temperature and signals the boiler control to suspend heating operation when ambient conditions reach a threshold that makes heating unnecessary. The result is automatic, temperature-based system management without manual intervention. Licensed HVAC technicians and hydronic heating specialists are the primary installers of this component in both residential and light commercial applications.

The os-100 is intended for use with compatible Hydrolevel boiler controls that support outdoor reset or warm weather shutdown logic. In a typical installation, the sensor mounts on an exterior wall or in an outdoor-rated location and connects to the control board via low-voltage wiring. This allows the control to read real-time outdoor temperature and make automated decisions about boiler firing, improving system efficiency during transitional seasons when full heating load is not required.

Key Features

• Enables warm weather shutdown to prevent unnecessary boiler operation during mild outdoor temperatures
• Designed for outdoor installation to accurately sense ambient air temperature
• Integrates with compatible Hydrolevel boiler controls for automated system management
• Supports hydronic heating efficiency by reducing boiler run time during shoulder seasons

Compatibility

Designed as an OEM-style outdoor sensor for use with Hydrolevel boiler controls that support warm weather shutdown or outdoor reset functionality.

Installation Notes

Installation should be performed by a licensed HVAC technician or hydronic heating specialist familiar with boiler control wiring and outdoor sensor placement. Power down the boiler and control system before making any wiring connections. Mount the sensor on a shaded exterior surface away from direct sunlight, exhaust vents, and heat sources to ensure accurate ambient temperature readings. Follow local mechanical and electrical codes, including applicable sections of the International Fuel Gas Code, when performing service on boiler systems.

Technical Specifications

• Application: Warm Weather Shutdown
• Sensor Location: Outdoor

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: os-100