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Hayward H350IDL2 User Manual

Hayward H350IDL2
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HAYWARD
®
Installation, Operation & Service Procedures
Pool and Spa/Hot Tub Heaters
Models H250IDL2, H350IDL2 & H400IDL2
PATENT NO. 6026804 1303026201 1105
FOR YOUR SAFETY
Do not store or use gasoline or other flam
-
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
neighbors phone. Follow the gas suppli-
ers 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.
WARNING: If the information in these
instructions is not followed exactly, a fire or
explosion may result causing property dam-
age, personal injury, or death.
FOR
YOUR
SAFETY
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.
For indoor installations, as an additional measure of safety, Hayward strongly recom-
mends installation of suitable Carbon Monoxide (CO) detectors in the vicinity of this appli-
ance and in any adjacent occupied spaces. Improper installation and/or operation will
void the warranty
.
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Hayward H350IDL2 Specifications

General IconGeneral
ModelH350IDL2
Heating Capacity350, 000 BTU
Heat Exchanger MaterialCupro Nickel
Energy Efficiency Rating84%
Water Flow Rate40-120 GPM
Ignition TypeElectronic
Heater TypeNatural Gas

Summary

Hayward Pool Heater Installation and Operation Manual

General Safety Warnings

Crucial safety information regarding fire, explosion, and gas leaks.

What to Do If You Smell Gas

Essential emergency procedure for gas leaks.

General Information and Warranty

Introduction to Hayward Heaters

Overview of the product and manual.

Limited Warranty Summary

Key details on product warranty coverage.

Heater Sizing and Selection

Selecting the Correct Size Heater

Guides for choosing the appropriate heater model for pools and spas.

Sizing for Swimming Pools and Spas

Specific instructions and tables for determining heater size.

Installation Procedures

Equipment Inspection and Site Preparation

Initial checks and site considerations before installation.

Installation Codes and Location Requirements

Guidelines for compliance with codes and proper heater placement.

Reversible Water Connections

Instructions for configuring water connections.

Installation: Venting and Air Supply

Outdoor and Indoor Installation Clearances

Specifies required clearances for different installation types.

Air Supply Requirements for Proper Combustion

Details necessary air flow for safe and efficient operation.

Equipment Installation in Confined Spaces

Guidelines for installing the heater in enclosed areas.

Venting and Adapter Kit Installation

Vertical Venting with Negative Pressure

Procedures and tables for negative pressure venting systems.

Indoor Adapter Kit Installation

Instructions for installing the indoor adapter kit.

Vent Sizing Tables

Tables for determining appropriate vent diameters and heights.

Special Venting and Gas Connections

Horizontal/Vertical Venting with Positive Pressure

Guidance for positive pressure venting systems.

Special Gas Vent Adapter Kit Installation

Steps for installing the special gas vent adapter.

Connecting Special Gas Vent to Heater

How to attach the vent to the adapter.

Gas Supply and Water Piping

Gas Supply and Piping Sizing Charts

Tables for sizing natural gas and propane gas lines.

Gas Installation Requirements

Guidelines for connecting gas supply and safety precautions.

Water Piping Requirements

Information on water connections and suitable water types.

Plumbing and Bypass Valve Installation

Piping Installation Details

Explains components and methods for plumbing connections.

Manual Bypass Valve Installation

Instructions for installing a manual bypass valve if needed.

Typical Pool Plumbing Diagrams

Visual guides for connecting the heater in various pool setups.

Installation Specifics and Electrical Connections

Installation Above Pool/Spa Surface

Guidelines for heaters installed above the water level.

Automatic Chlorinators and Chemical Feeders

Recommendations for integrating chemical feeders.

Electrical Connections and Wiring Diagrams

Detailed instructions for electrical hookups.

Remote Control and Bypass Operation

Remote Control Connection Options

How to connect 2-wire thermostats and 3-wire switches.

Configuring Bypass Operation

Steps for setting up bypass operation with remote thermostats.

Installer Check-out and Start-up Procedures

General Start-up Preparations

Initial steps before gas and pressure testing.

Gas Line Testing and Pressure Checks

Procedures for leak testing and verifying gas pressure.

Gas Pressure Regulator Adjustment

How to adjust the gas pressure regulator if necessary.

Consumer Operation and Maintenance

Installation Below Pool/Spa Surface and Two-Speed Pumps

Specific installation notes for below-surface mounting and pump types.

General Operation and Water Chemistry

Basic operation, water balance, and chemical management.

Heater Operation and Chemical Feeders

How to operate the heater and use chemical feeders safely.

Operating Instructions and Safety Precautions

Lighting and Shutting Down the Heater

Step-by-step procedures for starting and stopping the appliance.

Critical Temperature and Medication Warnings

Important safety advice regarding water temperature and medication use.

Temperature Control and Set Point Adjustment

How to use the temperature controls and adjust settings.

Troubleshooting Ignition and Maintenance

Ignition Failure and Flame Loss Procedures

Steps for handling ignition failures and flame loss.

Periodic Inspection and Winterization

Recommended maintenance checks and seasonal shutdown.

Drain Plug Removal and Spring Start-up

Procedures for draining and preparing the heater for the season.

Qualified Technician Maintenance Procedures

General Maintenance and Control Access

Overview of maintenance tasks and accessing controls.

External Heat Exchanger Cleaning

Instructions for inspecting and cleaning the external heat exchanger.

Heat Exchanger Removal and Combustion Chamber

Procedures for removing the heat exchanger and combustion chamber.

Burner, Valve, and Ignitor Servicing

Burner Inspection, Cleaning, and Removal

Procedures for inspecting, cleaning, and removing burners.

Gas Valve and Ignitor Replacement

Steps for replacing the gas valve and ignitor.

Main Burner Orifice and Gas Conversion

Information on burner orifices and gas type conversion.

Control Module and Component Servicing

Control Module and Display Interface Servicing

Procedures for servicing the control module and display.

Fuse Board and Vent Pressure Switch

Maintenance for the fuse board and vent pressure switch.

Servicing High Limits, Switches, and Thermistors

High Limit Switch Replacement

Instructions for replacing high limit switches.

Blower Vacuum and Water Pressure Switch Service

How to service blower vacuum and water pressure switches.

Thermistor Replacement

Procedure for replacing the thermistor.

Servicing Valves, Transformer, and Blower

Bypass and Thermal Control Valve Servicing

Procedures for servicing internal valves.

Transformer Replacement

Instructions for replacing the transformer.

Combustion Blower Replacement

Steps for replacing the combustion blower.

Troubleshooting Guide and Error Codes

General Troubleshooting and Reset Procedures

Initial checks, reset options, and understanding error codes.

Understanding 'LO' Error Codes

Detailed explanation of soft and hard lockout 'LO' errors.

Supply and Internal Wiring Troubleshooting

Troubleshooting supply wiring and internal wiring problems.

IDL Heater Diagnostic Guide (Troubleshooting Chart)

Comprehensive chart for diagnosing heater faults.

Parts List and Illustration

Heater Parts List

A comprehensive list of all replaceable parts.

Parts Illustration and Identification

Visual guide to identify and locate parts.

Hayward Pool Heater Limited Warranty

Warranty Terms, Coverage, and Exceptions

Details on what the warranty covers and its limitations.

Claiming Warranty Service

Procedures for submitting a warranty claim.

FireTile™ Five-Year Limited Warranty

Specific warranty for FireTile™ components.

Heater Error Codes and Diagnostics

Error Code Descriptions and Information

Detailed explanations of error codes displayed by the heater.

Troubleshooting Guide for Error Codes

Guidance on how to resolve issues indicated by error codes.

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