Xylem 179529 S-4 Spacer Pcl Pch Series

Product Description

The XYLEM 179529 is an S-4 spacer designed for use with McDonnell Miller PCL and PCH series controls. Spacers in this product family serve as mechanical separators or mounting components within boiler water feeder and low-water cutoff assemblies. This part provides precise positional spacing between internal components, helping maintain correct alignment and reliable operation of the control unit. Installation is typically performed by licensed plumbers or HVAC service technicians during assembly, repair, or replacement of boiler safety controls.

This spacer is intended for use with PCL and PCH series low-water cutoffs and water feeders manufactured under the McDonnell Miller brand, now part of the Xylem product line. It is a service and repair component suited to residential and light commercial hydronic heating systems where accurate component spacing within the control assembly is critical to safe boiler operation.

Key Features

• Designed specifically for PCL and PCH series control assemblies
• Serves as a mechanical spacer to maintain proper component alignment
• OEM-style replacement part for McDonnell Miller boiler controls
• Supports reliable, safe operation of low-water cutoff and water feeder units

Compatibility

Designed for use with McDonnell Miller PCL and PCH series low-water cutoff and water feeder controls within the Xylem product line.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Before servicing any boiler control assembly, shut down the boiler, relieve system pressure, and allow the unit to cool completely. Refer to the applicable control assembly service manual and local boiler codes before disassembly or reassembly.

Technical Specifications

• Part Type: S-4 Spacer
• Series Compatibility: PCL / PCH

Standard Information

• Brand: XYLEM
• Manufacturer Part Number: 179529