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In-Ground Pool/Spa Gas Heaters
Owner's Manual
H150FD
W3H150FD
H200FD
W3H200FD
H250FD
W3H250FD
H400FD
W3H400FD
H500FD
Hayward Industries
1415 Vantage Park Dr., Suite 400
Charlotte, NC 28203
Phone (908)-355-7995
www.hayward.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Contents
Safety Instructions.......................1
Getting Started............................5
Installation.................................10
System Start-Up........................20
Maintenance & Service.............26
Troubleshooting.........................34
Service Parts..............................41
Warranty....................................42
H250FDASME
H400FDASME
H500FDASME
51300004201 RevE
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Table of Contents
Related Manuals for Hayward W3H200FD
Summarization of Contents
Getting Started
What to Expect When Operating Your Pool Heater
Guidance to protect pool users and product by maintaining good water quality.
Specifications
Heater Construction
Diagram illustrating the main components and their arrangement within the heater unit.
Features
Gas Requirements
Details on natural gas and propane gas pressure and orifice specifications.
Installation
Equipment Inspection
Procedure for inspecting the heater carton and unit for any shipping damage.
Uncrating The Heater
Steps for removing the shipping carton and securing brackets from the heater.
Sprinkler Heads
Guidance on avoiding sprinkler spray to prevent damage and warranty issues.
Locating the Heater
Guidelines for selecting the heater's placement area to prevent damage and ensure proper function.
Outdoor Installation and Service Clearances
Required clearances for outdoor installations to ensure proper combustion and ventilation.
Equipment Pad and Flooring
Guidance on placing the heater on a level surface and acceptable flooring materials.
Anchoring
Instructions for securing the heater using factory-supplied tie-down brackets.
Installing Tie-Down Brackets
Step-by-step instructions for installing the heater's tie-down brackets.
Altitude of Installation
Guidance on high altitude adjustments and conversion kits for optimal performance.
Gas Supply
Gas Supply and Piping
Guidelines for sizing gas piping based on input rating, material, and regulation type.
Water Connections & Piping
Reversible Water Connections
Instructions for changing the water connection side from right to left.
Electrical Connections
Drain Valve and Pressure Relief Valve Installation
Instructions for installing drain and pressure relief valves on ASME and non-ASME models.
Remote Control Connection
Details on connecting 2-wire or 3-wire remote controls for thermostat control.
System Start-Up
Control Setup
Explanation of the digital thermostat modes: STANDBY, SPA, POOL, and BYPASS OPERATION.
User Panel and Keypad Inputs
Description of user interface controls and expected response delays.
Normal Operation and Temperature Settings
Details on normal operation, temperature adjustments, and maximum set point features.
Failure to Light - Retry
Explanation of the heater's retry sequence for ignition failures and lockout conditions.
Loss of Flame and Automatic Reset
Procedure for flame loss recycle and automatic reset of error conditions.
Gas Testing
Gas Line and Pressure Testing
Procedures for leak testing gas lines and verifying gas pressure for proper operation.
Safety Before Lighting
What to Do If You Smell Gas
Immediate actions to take if a gas leak is detected around the appliance.
Operating Instructions
Lighting and Shutting Off Gas
Steps for safely lighting the heater and turning off the gas supply.
Gas Pressure Test Procedure
Procedure for testing and adjusting gas pressure at the valve for proper operation.
Water Testing
Water Pressure Switch Test / Adjustment
Procedure for testing and adjusting the water pressure switch for proper heater operation.
Two-Speed Pump Considerations
Notes on operating heaters with two-speed pumps and minimum pressure requirements.
Maintenance & Service
Periodic Inspection
Recommended inspection points for regular maintenance to maximize heater life.
Water Chemistry
Water Flow and Chemistry Guidelines
Importance of water flow and chemistry to protect the heat exchanger and ensure longevity.
Chlorinator and Bypass Valve Procedures
Guidelines for chlorinator installation and bypass valve operation for water balancing.
Winterization
Draining the Heat Exchanger
Procedure for draining the heat exchanger to prevent freeze damage.
Spring Start-Up
Procedure for annual start-up to prepare the heater for the upcoming season.
Component Service
Heat Exchanger and Burner Service
Procedures for inspecting and cleaning the heat exchanger and burners.
Burner, Gas Valve, and Igniter Service
Procedures for replacing burners, gas valve, and igniter components.
Flame Sensor Replacement
Instructions for removing and replacing the flame sensor.
Burner Orifice and Ignition System Service
Procedures for replacing burner orifices and ignition control board/fuse board.
Blower Vacuum Switch and High Limit Switches
Procedures for replacing blower vacuum switch and high limit switches.
Vent Pressure Switch and Exhaust Gas Temp Limit
Procedures for replacing vent pressure switch and exhaust gas temperature limit.
Thermistor and Water Pressure Switch Replacement
Procedures for replacing the thermistor and water pressure switch.
Transformer and Bypass Service Cartridge Replacement
Procedures for replacing transformer and bypass service cartridge.
Combustion Blower Replacement
Procedure for removing and replacing the combustion blower.
Troubleshooting
Error and Display Codes
Index of display codes and their descriptions for troubleshooting the heater.
Troubleshooting Lookup Chart
Lookup chart for diagnosing and resolving specific unit faults and issues.
Fuse Specifications
Specifications for fuses used in the heater, available as hardware or service parts.
Wiring Troubleshooting
Guidance for diagnosing wiring issues affecting heater operation and display.
Service Parts
Cabinet and Heating Components
List of cabinet parts and major heating components available for the heater.
Electronic Controls and Water Manifold Components
List of electronic parts and water manifold components for the heater.
Miscellaneous Kits
List of available kits for maintenance and conversion.
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