Hayward Universal H-Series Low NOx User 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am-
mable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
redepartment.
-Installationandservicemustbeperformedby
aqualiedinstaller,serviceagency,orthegas
supplier.
POOL AND SPA/HOT TUB HEATERS
H250FDN & H250FDP; H350FDN & H350FDP;
H400FDN & H400FDP MODELS
OWNER’S MANUAL
FOR YOUR SAFETY
Thisproductmustbeinstalledandservicedbyauthorizedpersonnel,qualiedinpool/spa
heaterinstallation.Improperinstallationand/oroperationcancreatecarbonmonoxidegas
anduegasesthatcancauseseriousinjury,propertydamage,ordeath.
1301640701 REV D MMYY

Hayward Universal H-Series Low NOx Specifications

General

Fuel Type	Natural Gas or Propane
Heat Exchanger	Cupro Nickel
Efficiency	Up to 84%
Minimum Flow Rate	20 GPM
Type	Heater
Heating Capacity	150, 000 BTU/hr - 400, 000 BTU/hr (depending on model)
Ignition	Electronic
Dimensions	Varies by model
Weight	Varies by model
Model	Universal H-Series Low NOx

Summary

FOR YOUR SAFETY

Gas Leak Detection and Response

Procedure for detecting and responding to gas leaks, emphasizing safety and contacting authorities.

Flammable Vapors Warning

Caution against storing or using flammable vapors or liquids near the appliance.

SAFETY INFORMATION AND SYMBOL EXPLANATION

Understanding Safety Alert Symbols

Explanation of safety symbols (Warning, Caution, Attention) used in the manual and on equipment.

Electrical Safety Precautions

Critical safety instructions for electrical wiring, grounding, bonding, and avoiding shock hazards.

ELECTRICIAN NOTES AND ENTRAPMENT HAZARDS

Suction Entrapment Hazards

Detailed explanation of various suction entrapment risks: hair, limb, body, evisceration, mechanical.

Preventing Suction Entrapment

Mandatory installation standards and practices for suction outlets to prevent entrapment.

SPA AND HOT TUB SAFETY RULES

Hot Tub Usage Health Guidelines

Safety rules for hot tub use, including temperature limits, alcohol, and medical considerations.

Hyperthermia Effects and Definitions

Symptoms and effects of hyperthermia, plus definitions of technical terms.

SECTION I. GENERAL INFORMATION

Manual Introduction and Scope

Overview of the manual's purpose, content, and recommendations for owners.

Limited Warranty Summary

Summary of the pool heater's limited warranty terms, coverage, and exclusions.

SECTION II. CONSUMER OPERATION & MAINTENANCE

Maintaining Proper Water Chemistry

Critical guidelines for pool/spa water chemistry to prevent heat exchanger damage.

Water Flow and Chemical Levels

Ensuring adequate water flow and proper chemical balance for heater performance and protection.

OPERATION AND MAINTENANCE DETAILS

Chlorinator Installation and Bypass

Proper installation of chlorinators and the use of bypass valves for heater protection.

Heater Operation and Safety Warnings

Instructions for operating the heater and key safety warnings related to gas and temperature.

LIGHTING AND OPERATING INSTRUCTIONS

Safe Heater Lighting Procedure

Step-by-step instructions for safely lighting the heater, including pre-lighting checks.

HEATER CONTROL AND SETTINGS

Keypad Operations and Settings

How to use the keypad for mode selection, set point adjustment, and temperature display.

Winterization Procedures

Steps for protecting the heater during cold weather and winterization to prevent freeze damage.

START-UP AND ERROR CODE TROUBLESHOOTING

Spring Start-Up Process

Guidance for restarting the heater at the season's start, recommending professional consultation.

Understanding Heater Error Codes

List and explanation of error codes for diagnosing heater malfunctions.

LIMITED WARRANTY AND LIABILITY INFORMATION

Warranty Terms and Conditions

Details of the warranty, including coverage, limitations, exclusions, and expenses.

WARRANTY CLAIM AND LIABILITY LIMITS

How to Claim Warranty and Liability

Instructions for filing a warranty claim and information on liability limitations.