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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 400
Summarization of Contents
GETTING STARTED
POOL HEATER OPERATION GUIDE
Flow chart guidance for pool users and product maintenance.
INSTALLATION
LOCATING THE HEATER
Guidance on selecting a suitable location for the heater.
WATER PIPING
REVERSIBLE WATER CONNECTIONS
Instructions for reversing water connections.
ELECTRICAL CONNECTIONS
GENERAL ELECTRICAL INFORMATION
Electrical specifications and general wiring guidelines.
CHECK-OUT & START-UP
START-UP PROCEDURES
Overview of heater startup procedures and component locations.
CONTROL SETUP
USER PANEL AND KEYPAD OPERATION
How to use the user panel and keypad for control.
NORMAL OPERATION MODES
TEMPERATURE ADJUSTMENT
Adjusting pre-set temperature settings for pool and spa.
GAS TESTING
GAS LINE AND PRESSURE TESTING
Procedures for leak and pressure testing gas lines.
MAINTENANCE & SERVICE
PERIODIC INSPECTION
Recommended inspection points for heater maintenance.
WINTERIZATION
DRAINING THE HEAT EXCHANGER
Procedure for draining the heat exchanger.
SERVICE OF HEATER
HEAT EXCHANGER INSPECTION AND CLEANING
Procedure for inspecting and cleaning the heat exchanger.
TROUBLESHOOTING
ERROR AND DISPLAY CODES
Reference for error and display codes.
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