Xylem-McDonnell & Miller FPC-1000-RX2 Electric LWCO with RX2 Probe 144708

Description

The Xylem-McDonnell & Miller FPC-1000-RX2 (Part No. 144708) is a dependable electronic low water cut-off (LWCO) control designed to protect steam boilers from the dangers of low-water conditions. Equipped with the RX2 probe assembly, this unit delivers accurate, reliable water-level sensing and automatic burner shut-off when water levels drop below the safe operating threshold — helping prevent costly boiler damage and ensuring safe system operation.

Product Overview

McDonnell & Miller, a trusted Xylem brand, has been the industry standard in boiler protection controls for decades. The FPC-1000-RX2 combines proven electronic sensing technology with the RX2 probe to deliver fast-response low water detection for residential and light commercial steam boiler applications. The electronic design eliminates the mechanical float components found in traditional LWCOs, resulting in reduced maintenance requirements and long-term reliability.

Key Features

• Electronic low water cut-off with integrated RX2 probe for accurate water-level sensing
• Automatically cuts off burner operation when water falls below the safe level
• Eliminates mechanical float components for reduced maintenance and improved reliability
• Designed for steam boiler protection in residential and light commercial applications
• Xylem-McDonnell & Miller quality — a trusted name in boiler safety controls
• Part Number: 144708

Application

The FPC-1000-RX2 is ideal for installation on steam boilers where reliable low water protection is required. The RX2 probe mounts directly into the boiler and communicates water presence to the control module, triggering a burner lockout when water levels are insufficient. This protects heat exchangers and boiler sections from dry-fire damage.

Why Choose McDonnell & Miller

As part of the Xylem family of brands, McDonnell & Miller controls are engineered to meet the rigorous demands of the HVAC and hydronic heating industry. The FPC-1000-RX2 reflects decades of innovation in boiler safety, offering installers and building owners confidence in every installation.