Hayward W3H400FD Owner's Manual
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Hayward W3H400FD Owner's Manual

Hayward W3H400FD Owner's Manual

In-ground pool/spa gas heaters
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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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Summary of Contents for Hayward W3H400FD

  • Page 1: Table Of Contents

    System Start-Up......20 Maintenance & Service.....26 Troubleshooting......34 Service Parts......41 Warranty........42 H150FD W3H150FD H250FDASME H200FD W3H200FD H400FDASME H250FD W3H250FD H500FDASME 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...

  • Page 2: Safety Instructions

    – 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. USE OF NON-HAYWARD REPLACEMENT PARTS VOIDS WARRANTY. WARNING –...
  • Page 3 To reduce risk of injury, do not permit children to use or climb on this product. Closely supervise children at all times. Components such as the filtration system, pumps, and heaters must be positioned to prevent children from using them as a means of access to the pool. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 4 Additionally, Hayward recommends the use of a sacrificial anode(s). Sacrificial anodes provide protection to the heat exchanger against galvanic corrosion when properly installed. Sacrificial anodes should be regularly inspected and replaced before the end of their useful life.
  • Page 5 CONFORMANCE WITH CODES: The heater shall be installed in accordance with all local and state codes and with the requirements of the authority having jurisdiction of the installing site. The heater installation must conform to the latest edition of the above listed installation codes. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 6: Getting Started

    TURN ON ELECTRIC POWER AND GAS AS REQUIRED. START PRODUCT. PROGRAM REQUIRED WATER TEMPERATURE ON PRODUCT CONTROL PANEL. ENJOY YOUR POOL/SPA TURN OFF ELECTRIC IS HEATING/COOLING POWER AND GAS AS NEEDED FOR REST OF YEAR? REQUIRED USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 7: Specifications

    Rain Shield Assembly Heat Exchanger Assembly Water Pressure Switch Water Temperature Switches Upper Side Panels Drain Plug or Relief Valve Gas Control Combustion Control Bezel & Blower Lower Side Panels Control Boards Front Access Panel USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 8: Gas Requirements

    1.8 - 2.2 6.8 - 7.0 Gas Inlet Pressure, Minimum 10.0 Gas Inlet Pressure, Maximum 10.5 13.0 Gas Orifice Drill Sizes Gas Orifice Drill Sizes (500kbtu/hr) 2.3mm * Pressure range for allowable heating value variation USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 9 Dimensions USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 10: Wiring Connection Diagram

    HXXXFD Gas Heaters / Chaudière Gas à HXXXFD Flue Gas Temperature Limit Switch Commutateur limiteur de température des gaz de combustion Flue Gas Temperature Limit Switch Commutateur limiteur de température des gaz de combustion 51301044701 Rev A USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 11: Uncrating The Heater

    Lift the heater clear off the corrugated bottom pad and off of the pallet. Discard bottom corrugated tray and pallet appropriately. Figure 1: Front Shipping Screws Figure 1: Rear Shipping Screws Rear Shipping Front Shipping Screws & Brackets Screws & Brackets (Front Access Panel Removed) (Rear Access Panel Removed) USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 12: Locating The Heater

    12. For minimum exhaust vent clearances for all building openings, including but not limited to vented eaves, doors, windows, or gravity inlets, see Figure 3. In Canada, the heater must be installed with the top of the vent at least 10 feet (3m) below, or to either side of, any opening into a building. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 13: Equipment Pad

    (FIELD-SUPPLIED, Tapcons , qty = 4, stainless steel, size to be ¼”diameter with a minimum length of 1-1/2”) ® Fender washers (FIELD SUPPLIED, stainless steel, qty = 4, size to be at least 1-1/2”) USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 14: Gas Conversion

    ATTENTION - Use Only CSA approved flexible outdoor gas appliance connectors marked with BTUH capacity (which must be equal to or greater than the heater rated input) and appropriate gas type (natural and/or LP). USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 15 Gas Valve Inlet 100 to 200 1-1/4 1-1/4 1-1/4 1-1/2 (ft.) 200 to 300 1-1/4 1-1/4 1-1/2 Based upon an inlet gas pressure of 0.5 psig or less at a pressure drop of 0.5 inwc USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 16 Inlet (ft.) *Based upon an inlet gas pressure of 10 psig at a pressure drop of 1 psi ** Based upon an inlet gas pressure of 11 inwc at a pressure drop of 0.5 inwc USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 17 10. Reconnect the 2 wires connecting the heater wire harness to the water pres- sure switch and the temperature limit switch. 11. Reverse the above panel disassembly steps to reassemble the heater. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 18 - Improperly adjusted manual bypass valves will result in damage to the heater if the flow rates are not maintained under all operating conditions as specified in the Specifications section. The heat exchanger will fail and this damage will not be covered under the manufacturer warranty. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 19 For installation above or below the pool/spa surface, refer to System Start-Up section for proper pressure switch setup. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 20: Electrical Connections

    Hayward recommends the use of a sacrificial anode(s). Sacrificial anodes provide protection to the heat exchanger against galvanic corrosion when properly installed. Sacrificial anodes should be regularly inspected and replaced before the end of their useful life.

  • Page 21: General Information

    Water must be flowing through the heater during any operation. Check that the pump is operating and the system is filled with water and purged of all air prior to starting the heater. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 22: Control Setup

    The control will continue to display the error code and remain in lockout until it is reset. At reset the control will go to the last saved mode. Mode Button Numeric Display Control and Selector Buttons USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 23 The user can reset the control and clear the “IF” error code by pressing the “MODE” button to move through “STANDBY”and return to the previous mode (“POOL” or ”SPA”). USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 24: Gas Testing

    ATTENTION - If inlet gas pressure is inadequate, check for undersize piping between the gas meter and the heater or for a low- capacity gas meter (see Gas Supply section of this manual). USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 25 Figure 18: Lighting & Operating Instructions Label USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 26 Figure 19: Gas Valves For all valves, adjust regulator pressure by removing the screw cap and turning the adjustment screw clock wise for increase in pressure and counter clock wise for decrease in pressure USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 27: Water Testing

    An inspection program is a good preventative maintenance measure. Keep this manual in a safe place for future reference for yourself as well as for a service technician to consult when inspecting or servicing the heater. Any additional inspection procedures are to be performed by a qualified service technician. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 28: Water Chemistry

    Ensure water flow through the heater is restored before operating the heater. A bypass feature is also advantageous for service needs and for the ability to remove the heater from the water path when not heating. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 29 Set the temperature control using the keypad to “POOL” or “SPA” and adjust the set point to the desired temperature setting. If operating difficulties are encountered, contact a qualified service company for assistance. Figure 21: Heat Exchanger Header USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 30: Component Service

    “lazy” flame may be an indication of an incorrect fuel / air mixture. Check the heater for restrictions to the air supply, heat exchanger, vent system, burner body and/ or gas orifices. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 31 Disconnect the flame sensor wire from the ignition control board. Remove the screws that secure the flame sensor to remove the sensor. Replace the flame sensor and reverse the above procedure to reassemble unit. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 32 Unplug the high limit wires from the wiring harness. Unscrew the high limit switch from the header. Replace the high limit switch. Use new sealant on the high limit switch threads before reinstalling. Reverse the above procedure to reassemble unit. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 33 Remove the (2) screws securing metal trim panel to the upper trim panel. Remove the wires from the pressure switch. Unscrew switch from header. Replace the pressure switch. Use new sealant on the pressure switch threads before re-installing. Reverse procedure above to reassemble unit. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 34 Remove the blower from the air box cover (4 screws). Remove the blower air inlet plate from the blower (4 screws). Be sure the blower outlet gasket is in place before proceeding. Reverse the above procedure to reassemble the blower. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 35: Troubleshooting

    “STANDBY” setting and returning to the initial setting (“SPA” or “POOL”).When a heater is wired to the line side of the power circuit (continuous power) the blower will not operate when the pump is cycled via a time clock or other switch method. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 36 If flame is sensed with the gas valve off the ignition control board will go into lockout. The blower will run until error condition is corrected. When corrected, the ignition control board will run blower for 5 s then automatically restart after 2 minutes. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 37 “out of bounds” condition with either thermistor (less than 10°F or greater than 180°F) will Temperature sensor failure error result in unit shut down and the error code displayed. Automatic restart is 2 minutes after the error is corrected. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 38 Inspect ignition control board wiring is to supplied wiring diagram. Ensure insulation on wiring is Open FC3 and/or control board wiring. not worn and no bare wire is exposed. If OK proceed to step 4. F1 Fuses Ignition control board is Replace ignition control board. defective. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 39 MODE key to put the heater into STANDBY. Press and hold the DOWN key and then press and Operation hold the MODE key. Hold down both keys for 3 seconds until the indication ‘‘bO’’ is removed Bypass Operation from the display. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 40 Adjust water pressure switch setting as presented in Manual (only if heater is above or below Switch Fault sure switch setting. water level). If LO does not clear, proceed to step 7. Water pressure switch is Replace water pressure switch. defective USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...
  • Page 41 - When lighting a gas heater, the lighting instructions must be followed exactly to prevent “flashback” of excess gas in the heater. Electronic ignition heaters and electric heaters must have the power shut off when making adjustments for servicing, or coming into contact with the heater. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

  • Page 42: Service Parts

    Service Parts The following service parts and kits are available from Hayward and through your local distributor. When ordering parts, include the complete heater model number listed on the unit’s rating plate. (Example: H400FDN) All service must be performed by a qualified technician.

  • Page 43: Warranty

    The Hayward Pool products warranty does not apply to components manufactured by others. For such products, the warranty established by the respective manufacturer will apply. The express limited warranty above constitutes the entire warranty of Hayward Pool Products with respect to its pool products and is in lieu of all other warranties expressed or implied, including warranties of merchantability or fitness for a particular purpose.
  • Page 44 Hayward Industries, Inc. © 2024 Hayward Industries, Inc. All other trademarks not owned by Hayward are the property of their respective owners. Hayward is not in any way affiliated with or endorsed by those third parties. For patent information, refer to www.hayward.com/patents.

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