Product Overview

The Pentair 475612 ETi 400 Condensate Neutralizer Kit is a genuine Pentair replacement and installation kit designed for the Pentair ETi 400 High-Efficiency Pool and Spa Heater.

Because the ETi 400 is a high-efficiency condensing heater, it produces acidic condensate during normal operation. The condensate can have a low pH and may damage certain drain systems, piping, or other materials over time if it is discharged without proper treatment. The 475612 neutralizer kit helps raise the pH of the condensate before it enters the drainage system.

Pentair recommends condensate neutralization for ETi 400 installations to help protect drainage components and to assist with compliance where local codes or water authorities require condensate treatment.

This genuine OEM kit is suitable for replacement of an existing ETi 400 condensate neutralizer or for applications where a neutralizer needs to be added to the heater installation.

Key Features

• Genuine Pentair OEM replacement kit
• Manufacturer Part Number: 475612
• Designed specifically for Pentair ETi 400 High-Efficiency heaters
• Helps neutralize acidic condensate produced during heater operation
• Helps protect drain lines, floor drains and surrounding plumbing components
• Recommended by Pentair for proper ETi 400 condensate management
• Can be used for applicable indoor or outdoor ETi 400 installations
• Suitable for replacing an existing condensate neutralizer assembly
• Designed for use with the heater's condensate drainage system
• Helps support a properly installed high-efficiency condensing heater

Why the ETi 400 Needs Condensate Management

The Pentair ETi 400 is a condensing high-efficiency heater. During operation, moisture contained in the combustion gases condenses into liquid.

Pentair states that the ETi 400 may produce approximately 2–4 gallons of condensate per hour, depending on operating conditions.

This condensate can have a pH between approximately 3.1 and 4.2, making it acidic enough to potentially affect certain types of drains and piping over time.

The 475612 Condensate Neutralizer Kit treats the condensate before it is discharged, helping reduce its acidity and providing additional protection for the drainage system.

Compatibility

Designed for:

Pentair ETi 400 High-Efficiency Pool & Spa Heater

Common ETi 400 applications include:

• Residential pools
• Residential spas
• Commercial pool applications
• Indoor heater installations
• Outdoor heater installations

Always verify the heater model and installation configuration before ordering replacement components.

Specifications

Installation Information

The condensate neutralizer is installed within the ETi 400's condensate drain system so that condensate passes through the neutralizing media before being discharged.

Depending on the installation, the neutralizer may be mounted:

• At the base of the heater for applicable outdoor installations
• Externally within the condensate drain piping for applicable indoor installations

The condensate drainage system must be properly routed so that water cannot accumulate or back up into the heater.

Installation should follow all Pentair installation instructions and applicable local plumbing, mechanical and drainage codes.

Professional installation is recommended when modifying heater condensate or drainage plumbing.

When Should the Neutralizer Be Replaced?

Neutralizing media is consumed gradually as acidic condensate passes through the system. Replacement intervals can vary depending on:

• Heater operating hours
• Pool or spa heating demand
• Amount of condensate produced
• Installation conditions
• Condition of the neutralizing media

Inspect the condensate management system as part of routine heater service and replace the neutralizer when required.

Frequently Asked Questions

What heater does Pentair 475612 fit?

The 475612 Condensate Neutralizer Kit is designed for the Pentair ETi 400 High-Efficiency Pool and Spa Heater.

What does a condensate neutralizer do?

It helps reduce the acidity of the condensate created by a high-efficiency condensing heater before the water enters the drainage system.

Does the Pentair ETi 400 produce condensate?

Yes. The ETi 400 is a condensing heater and can produce approximately 2–4 gallons of condensate per hour during operation.

Is ETi 400 condensate acidic?

Yes. Pentair documentation indicates ETi 400 condensate can have a pH of approximately 3.1–4.2.

Does Pentair recommend installing a condensate neutralizer?

Yes. Pentair recommends neutralizing ETi 400 condensate to help prevent possible long-term damage to drainage systems and to satisfy applicable local requirements.

Is 475612 a genuine Pentair part?

Yes. 475612 is the genuine Pentair condensate neutralizer kit specified for the ETi 400 heater.

Can the neutralizer be used on an indoor ETi 400 installation?

Yes. Pentair documentation shows the neutralizer can be installed externally in the condensate piping for applicable indoor heater installations.

Can it be used on an outdoor ETi 400 installation?

Yes. Pentair also provides for the condensate neutralizer to be mounted at the heater base in applicable outdoor installations.

Is this the entire ETi 400 heater?

No. 475612 is the condensate neutralizer kit only. The heater and other replacement components are sold separately.

Important Installation Note

Condensate from a high-efficiency heater should never be assumed to be ordinary drain water. Improper disposal of acidic condensate can damage certain drain materials, particularly metal components.

Always follow Pentair's installation requirements and applicable local codes when routing and treating heater condensate.