Hayward H150 User Manual

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:

Hayward H150 Specifications

General

Model	H150
Category	Swimming Pool Heater
BTU Input	150, 000 BTU
Heat Exchanger	Cupro Nickel
Minimum Flow Rate	20 GPM
Maximum Working Pressure	50 PSI
Type	Natural Gas or Propane

Summary

SAFETY FIRST

Gas Leak Procedures

Immediate actions to take if gas is detected, including not using electrical devices or phones.

Installation Safety Warnings

Highlights risks of fire, explosion, and carbon monoxide poisoning from improper installation or operation.

WATER MANAGEMENT AND PROTECTION

Heat Exchanger Protection Guidelines

Critical guidelines to prevent heat exchanger damage from improper water flow or chemistry.

Water Chemistry Recommendations

Provides recommended levels for Chlorine, Bromine, pH, and Alkalinity to protect the heat exchanger.

HEATER SIZING GUIDELINES

Pool Sizing Determination

Spa/Hot Tub Sizing Guide

INSTALLATION REQUIREMENTS

Inspection, Codes, and Location

VENTING OPTIONS AND CLEARANCES

Outdoor/Indoor Vent Types

Outdoor Installation Clearances

INDOOR INSTALLATION AND AIR SUPPLY

Indoor Venting and Clearances

Combustion and Ventilation Air

Details air supply needs for proper combustion and ventilation, with tables for calculating required vent areas.

GAS SUPPLY AND PIPING

Gas Pipe Sizing Charts

Provides tables for selecting correct gas pipe sizes based on fuel type, pressure, and distance.

Natural Gas and Propane Installation

Outlines specific safety and connection requirements for natural gas and propane gas.

PLUMBING CONNECTIONS

Water Flow and Bypass Valve

PRESSURE RELIEF VALVE

Pressure Relief Valve Installation

HEATER WIRING SYSTEMS

Electronic Ignition System Wiring

INSTALLER CHECKOUT AND START-UP

Initial Operational Checks

Ensures water flow, system purging, and proper heater operation before final checks.

Gas Line and Pressure Testing

Procedures for leak testing gas lines and verifying correct gas pressure for safe operation.

GAS PRESSURE REGULATOR ADJUSTMENT

Regulator Adjustment Procedure

CONSUMER SAFETY AND OPERATION

Pre-Operation Safety Warnings

Crucial warnings regarding alcohol, drugs, water temperature limits, and chemical handling for safe use.

LIGHTING INSTRUCTIONS

Millivolt Pilot Lighting

Detailed step-by-step guide for manually lighting the pilot on millivolt heaters.

Automatic Ignition Sequence

Instructions for starting the heater with automatic ignition, including safety checks.

MAINTENANCE AND SERVICE PROCEDURES

Heat Exchanger Cleaning

Procedure for inspecting and cleaning the external surfaces of the heat exchanger.

Combustion Chamber Inspection

QUALIFIED TECHNICIAN SERVICES

General Service Precautions

Emphasizes that only qualified technicians with proper equipment should service the heater.

Control Access and Wiring

HEAT EXCHANGER REMOVAL

Heat Exchanger Removal Procedure

BURNER INSPECTION AND CLEANING

Main Burner Flame Characteristics

Burner Assembly Procedures

GAS VALVE AND PILOT ASSEMBLY REPLACEMENT

Gas Valve Replacement Steps

HIGH LIMIT AND TEMPERATURE LIMITER SWITCHES

High Limit Function and Replacement

Limiter Switch Replacement

PRESSURE SWITCH AND BY-PASS VALVE

Pressure Switch Adjustment and Replacement

TROUBLESHOOTING GUIDE

Heater Will Not Fire Troubleshooting

Flowchart to diagnose why the heater will not ignite or fire up, covering pilot and main burner issues.

Heater Cycling Issues

Sooting of Heat Exchanger

MILLIVOLT HEATER TROUBLESHOOTING

Will Not Fire (Millivolt)

Detailed diagnostic steps for millivolt heaters that fail to ignite or operate.

ELECTRONIC IGNITION TROUBLESHOOTING

Main Burner Fire Issues

HEATER DIAGNOSTIC CODES

Water Pressure Switch Fault (Code LO)

Troubleshooting steps for the 'LO' diagnostic code related to water pressure switch issues.

Temperature Limiter Switch Faults (Codes LO)

Diagnosing temperature limiter switch faults (LO code) for both automatic and manual reset types.

IGNITION AND SENSOR FAULT DIAGNOSIS

Ignition Failure Diagnosis (Code IF)

Troubleshooting steps for ignition failures (Code IF), including wiring and gas valve checks.

Temperature Sensor Fault (Code SF)

Diagnosing temperature sensor input failures (Code SF) and potential sensor defects.