The Hydrolevel 45-353 Wire Harness is a critical field-service component designed for the seamless integration of Safgard Model 1100 and 1100M Low Water Cut Off (LWCO) sensors. Engineered specifically for atmospheric boilers, this harness interfaces directly with the vent damper plug on Honeywell and United Technologies (UTC) integrated boiler control modules. It simplifies the boiler control wiring process by utilizing a "plug-and-play" architecture, eliminating the need for complex manual splicing while ensuring a reliable electrical connection between the LWCO and the burner circuit. This HVAC replacement part is optimized for natural draft models and provides a secure link to the "DAMPER" port on the control board. By maintaining the integrity of the limit string, the Hydrolevel 45-353 ensures that the 24V signal is properly interrupted during a low water condition. Note that this LWCO wiring adapter is not compatible with induced draft boilers or specific electronic ignition systems that do not utilize the standard 5-pin or 6-pin vent damper connection. Key Benefits for Contractors Compatible with Safgard 1100 and Safgard 1100M series 24V low water cut-offs. Direct integration with UTC Boiler Control Modules and Honeywell Integrated Controls. Reduces installation time by utilizing factory-matched vent damper plug connectors. Ensures code-compliant boiler safety control without compromising the internal boiler control module circuitry. Robust construction designed for high-temperature environments near the boiler jacket. Common Questions & Technical Insights Is the Hydrolevel 45-353 compatible with power-vented boilers? No. This harness is strictly for atmospheric boilers (natural draft). Induced draft or power-vented systems use different pressure switches and control logic that are not compatible with this specific wire harness adapter. Can I use this for both automatic and manual reset Safgard models? Yes. The 45-353 harness is designed to support the Model 1100 (Automatic Reset) and the Model 1100M (Manual Reset) units. Where does the harness actually plug in? You disconnect the existing damper cable from the "DAMPER" port on the Honeywell or UTC control, insert the 45-353 male plug into that port, and reconnect the original damper cable into the female end of the harness. 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.
