Hayward S166T PRO Series User Manual

OWNER’S MANUAL
INSTALLATION, OPERATION & PARTS
MODELS S166T, S166T90 PRO SERIES HIGH-RATE SAND FILTER
SAVE THIS INSTRUCTION MANUAL
IS166T90
Rev. E
Basic safety precautions should always be followed, including the following: Failure to follow instructions can cause severe
injury and/or death.
This is the safety-alert symbol. When you see this symbol on your equipment or in this manual, look for one of the
following signal words and be alert to the potential for personal injury.
WARNING warns about hazards that could cause serious personal injury, death or major property damage and if
ignored presents a potential hazard.
CAUTION warns about hazards that will or can cause minor or moderate personal injury and/or property damage
and if ignored presents a potential hazard. It can also make consumers aware of actions that are unpredictable and unsafe.
The NOTICE label indicates special instructions that are important but not related to hazards.
HAYWARD POOL PRODUCTS
POMONA, CA CLEMMONS, NC NASHVILLE, TN
WWW.HAYWARDPOOL.COM
Use only High Rate Sand No. 20 Silica Sand (.45mm - .55mm)

Hayward S166T PRO Series Specifications

General

Filter Type	Sand
Tank Diameter	16 inches
Valve Type	Top Mount
Max Working Pressure	50 PSI
Required Sand	150 lbs
Valve Included	Yes
Inlet/Outlet Size	1.5 inches
Drain Connection	Yes

Summary

Hayward Sand Filter Owner's Manual Introduction

Product Overview and Safety Alerts

Introduces the filter models S166T/S166T90 and explains safety symbols and signal words.

Essential Sand Media Requirements

Specifies the correct type and grade of sand required for the filter.

Critical Safety Precautions for Filter Operation

Understanding Suction Entrapment Hazards

Details various types of entrapment risks associated with pool suction outlets.

Preventing Suction Entrapment

Provides essential guidelines to mitigate suction entrapment risks during operation.

General Operational and Electrical Warnings

Covers warnings on pressure, electrical safety, valve operation, and grounding.

Filter System Functionality and Installation Guide

How the High-Rate Sand Filter Works

Explains the sand filtration process for removing pool debris and recirculating water.

Step-by-Step Filter Installation

Guides users through the physical installation of the filter, including sand loading and valve connection.

Filter Operation, Maintenance, and Winterizing

Initial Filter Start-Up Procedure

Details the steps for the first-time operation of the filter system after installation.

Filter Control Valve Functionality

Explains the purpose and operation of each setting on the Multiport Valve.

Filter System Winterizing Steps

Provides instructions for properly preparing the filter for cold weather storage.

Filter Specifications and Component Identification

Technical Specifications for S166T/S166T90

Lists key performance and dimensional specifications for the filter models.

Filter Parts Diagram and List

Visually identifies all components of the sand filter system with a reference list.

Troubleshooting, Flow Rates, and Pool Care

Recommended System Flow Rates

Details maximum system flow rates based on pipe diameter for optimal performance.

Solving Common Filter Issues

Offers solutions for problems like low flow, short cycles, and unclear water.

Optimal Pool Water Chemistry Levels

Provides recommended levels for pH, alkalinity, and chlorine for healthy pool water.

Hayward Filter Warranty and Registration

Understanding the Limited Warranty

Explains the warranty coverage, duration, and limitations for the filter equipment.

Registering Your Product Warranty

Instructions on how to complete and submit the warranty registration card or online.