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IN GROUND POOL/SPA GAS HEATERS
INSTALLATION & OPERATIONS MANUAL
FOR YOUR SAFETY:
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, injury, or death.
• Do not store or use gasoline or other
flammable vapors or liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions. If you cannot reach your gas
supplier, call the fire department.
• Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
This product must be installed and serviced by
authorized personnel, qualified in pool/spa heater
installation. Improper installation and/or operation
can create carbon monoxide gas and flue gases
that can cause serious injury, property damage,
or death.
SAVE THESE
INSTRUCTIONS
CONTENTS
USE ONLY GENUINE REPLACEMENT PARTS
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Table of Contents
Related Manuals for Hayward 350
Summarization of Contents
Introduction, Safety, and Specifications
Getting Started
This flow chart provides guidance to protect pool users and product by maintaining good water quality.
Important Safety Information
Basic safety precautions and warnings about potential hazards like fire, explosion, and injury.
Specifications and Requirements
Table detailing heater models, input, flow, efficiency, width, and weight.
Installation
Heater Construction
Diagram illustrating the main components and sub-assemblies of the heater unit.
Installation Procedures
Instructions for preparing, locating, and clearing the heater for installation.
Gas, Water, and Electrical Installation
Procedures for gas supply, piping, water connections, and electrical wiring.
Operation and Control
Check-Out and Start-Up
Overview of the start-up process and initial checks.
Control Setup
Explanation of operating modes, control panel, and buttons.
Gas Testing
Procedures for testing gas lines for leaks and correct pressure.
Maintenance, Service, Troubleshooting, and Parts
Water Testing and Maintenance
Testing water pressure switch and recommended periodic inspections.
Heater Service Procedures
Instructions for inspecting and cleaning the heat exchanger and burners.
Troubleshooting
Reference to display codes and troubleshooting charts for issue resolution.
Parts Listing
Diagram showing numbered parts for service.
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