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Hayward H400 User Manual

Hayward H400
52 pages
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POOL AND SPA/HOT TUB HEATERS
H150, H200, H210, H250, H300,
H350 & H400 MODELS
INSTALLATION, OPERATION, & SERVICE 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.
1301371801 Rev A 0413
U.S. PATENT NOS. 6,026,804 & 6,321,833
- Do not store or use gasoline or other
ammable vapors or liquids in the
vicinity of this or any other appliance.
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.
FOR YOUR SAFETY
WARNING: If the information in these
instructions is not followed exactly, a re or
explosion may result causing property
damage, injury, or death.
WHAT TO DO IF YOU SMELL GAS:

Table of Contents

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Hayward H400 Specifications

General IconGeneral
ModelH400
CategorySwimming Pool Heater
BTU Output400, 000 BTU
Fuel TypeNatural Gas or Propane
Heat ExchangerCupro Nickel
Water Flow Rate40 - 120 GPM
IgnitionElectronic
Warranty1 year

Summary

Safety Information and Emergency Procedures

WARNING: Fire and Explosion Risk

Warning about fire or explosion if instructions are not followed.

What to Do If You Smell Gas

Emergency procedures and contacts for gas leaks.

Installation Safety Warning

Warning on potential injury or death from improper installation.

General Information and Heater Sizing

Heater Sizing Guide

Guidance and tables for selecting the correct heater size.

Water Chemistry and Protection

Water Flow and Chemistry Protection

Critical guidelines for water flow and chemistry to protect the heat exchanger.

Installation Requirements

Equipment Inspection and Codes

Procedures for inspecting equipment and adhering to installation codes.

Outdoor Installation and Clearances

Indoor Installation and Air Supply

Air Supply Requirements

Vent requirements for adequate combustion and ventilation air.

Gas Supply and Piping

Gas Pipe Sizing Charts

Tables for sizing gas pipe based on fuel type, pressure, and distance.

Plumbing Connections and Flow Control

Installation Specifics and Safety Valves

Wiring and System Types

Installer Check-out and Start-Up

General Start-Up Checks

Essential checks before and during heater start-up.

Gas Line Testing and Pressure

Procedures for leak testing gas lines and checking gas pressure.

Gas Pressure Regulator and Pump Setup

Gas Pressure Regulator Adjustment

Procedure for adjusting the gas pressure regulator for optimal performance.

Consumer Operation and Safety

Safety Warnings for Operation

Critical safety warnings for users before operating the heater.

Lighting and Gas Shut-Off Instructions

Lighting and Gas Safety

Detailed instructions for lighting the pilot and safety measures for gas.

Temperature Controls and Operation

Heater Maintenance and Seasonal Procedures

Qualified Technician Maintenance Procedures

General Servicing and Control Access

Guidelines for qualified technicians and accessing control panels.

Heat Exchanger and Combustion Chamber Service

Burner, Gas Valve, and Pilot Assembly Service

Burner Inspection, Installation, and Valve Replacement

Procedures for burner service, installation, and gas valve replacement.

Control Locations and Component Replacement

Thermal Control Valve Service

Troubleshooting Overview and Millivolt Issues

General Troubleshooting and Wiring Checks

Basic troubleshooting steps and wiring verification.

Millivolt Heater Ignition Troubleshooting

Step-by-step guide to diagnose ignition problems in millivolt heaters.

Troubleshooting Millivolt Burner Issues

Millivolt Burner Fire Troubleshooting

Diagnosing issues when the main burner does not fire on millivolt heaters.

Troubleshooting Electronic Ignition

Electronic Ignition Troubleshooting Charts

Diagnostic codes and remedies for electronic ignition system faults.

Heater Warranty Information

Limited Heater Warranty Terms and Conditions

Details on warranty coverage, limitations, and exclusions for the heater.

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