Water Trim with Tankless Opening for EG35-75

EG35-75 Water Trim with Tankless Opening – Factory-Specified Assembly for EG Series Boilers

The Weil-McLain EG35-75 Water Trim Kit is a complete assembly designed specifically for use with Weil-McLain EG Series boilers that are configured for domestic hot water production via a tankless coil. This trim package is engineered to ensure proper control, safety, and operational flow in hot water heating systems requiring integrated domestic water supply.

This water trim kit includes pressure and temperature controls, piping components, and mounting accessories required for proper field installation. It is compatible with factory knockdown boilers configured with a tankless heater opening and is suitable for both residential and light commercial boiler installations where a domestic hot water coil is installed in the block casting.

Kit Components and Function

• Application: Designed for EG-35 through EG-75 models with tankless coil opening
• Function: Facilitates installation of domestic hot water piping to boiler block
• System Type: Hydronic hot water heating with tankless domestic water production
• Included Hardware: Typically includes relief valve, pressure-temperature gauge, tankless coil cover plate (if required), nipples, and associated fasteners (confirm with factory documentation)
• Installation Orientation: Field-mounted to boiler casting at tankless coil location

Installation Guidance

This kit must be installed in accordance with local plumbing and mechanical codes. All connections should be leak-checked, and control devices must be correctly oriented for safe and accurate operation. Installation should be performed by a licensed contractor familiar with boiler piping practices, especially in systems utilizing tankless domestic water production.

Key Technical Considerations

• Compatibility: Matches EG series boilers with tankless coil cutout (verify model and configuration)
• Pressure Rating: Appropriate for typical residential DHW operating pressure
• Materials: Constructed using corrosion-resistant metal components suited for potable water use
• Maintenance Access: Designed to allow field service of temperature/pressure relief and coil gasket replacement

System Integration Notes

When used in conjunction with an installed tankless coil, the EG35-75 water trim ensures proper connection and operational safety of the domestic water side of the system. Periodic inspection of components such as the relief valve and gauge is recommended per standard maintenance practices. Thermal expansion and pressure regulation must be addressed elsewhere in the system design.