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®
HAYWARD
Installation, Operation & Service Procedures
Pool and Spa/Hot Tub Heaters
Models H250IDL2, H350IDL2 & H400IDL2
FOR YOUR SAFETY
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.
– 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 el
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Contents Section I. General Information SECTION I. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 SECTION V. CONSUMER OPERATION & MAINTENANCE PROCEDURES . . . . .23 Introduction: Limited warranty summary: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 This manual contains instructions for installation, We warrant the H-Series pool/spa heater to be Hayward heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 General . . .
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Section II. Heater Sizing Section III. Installation 5. Locate in Figure 2 the surface area equal to or just walkways, adjacent buildings, openable windows, and Selecting the correct size heater: Equipment inspection: greater than the pool’s surface area and the building openings complies with the National Fuel Factors influencing heater sizing include pool/spa On receipt of the heater equipment, inspect the temperature degree rise and select the appropriate Gas Code, ANSI Z223.1 and/or CAN/CGA B
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2. When communicating with the outdoors Indoor installation and venting: Heater Top Reversible Water Connections through vertical ducts, each opening shall The following installation and service clearances Figure 5 have a minimum free area of 1 square inch must be maintained from combustible materials. per 4,000 BTU per hour of total input rating of all equipment in the enclosure. See Figure 10. Indoor Installations 3. When communicating with the outdoors Left Access Top - 36” through horizo
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F Vertical Venting—Negative Indoor Installation Figure 16 Vent Sizing Table for Vertical Negative Pressure Vending Figure 12 Pressure: Table 1: Type B Vertical Vent with Type B Vent Connector Lateral Length (L) must be less than Ω of the Vertical Vent Height (H) Locate the pool/spa heater as close Vent System can have up to three 90 degree elbows. as practical to a chimney and gas sup- H350IDL H250IDL H400IDL ply according to the Figures 12 and 13. Minimum Height (H) Maximum Hieight (H) Minimum
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Horizontal or Vertical Venting—Positive Special Gas Vent Adapter Kit Indoor Installation: Connecting Special Gas Vent to the The following installation and service clearances Pressure: Installation: Heater: must be maintained from the heater to combustible The heater can be vented either horizontally or A Special Gas Vent Adapter collar must be installed Attach the Special Gas Vent to the Vent Adapter materials. See Figure 22. to the heater exhaust outlet, and a drain plug and out- vertically wi
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Gas supply and piping: Sediment Trap Figure 26 Refer to the charts on Figure 25 for gas pipe sizing for low pressure natural gas, low pressure single state propane gas, and high pressure two stage propane gas systems. NATURAL GAS All gas installations: The gas meter must have the capacity to supply The H-series heater is to be installed with a gas enough gas to the pool heater and any other gas connection located on the left side. Insert the pipe to appliances if they are on the same pipeline (E
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exception of a three-way switching valve and an NOTE: Assemble these parts to heater prior to the filter system may be made of plastic 6. If the normal pump and filter system flow rate in-line chlorinator and associated check valve. plumbing. Tighten union nuts securely before gluing materials, if acceptable by the authority having exceeds 125 gpm then a manual by-pass valve, 1 Blockage of water flow from heater return to pool fittings to ends of pipe nipples. jurisdiction. If 1 ⁄2” plastic pi
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Wiring Diagram Figure 35 If used, a chlorinator must be installed down- Installation above pool/spa surface: stream from the heater in the pool return line and at a If the heater is installed less than three (3) feet lower elevation than the heater outlet connection. See above the surface of the pool/spa water, install eye- Figure 33. Install a separate positive seal, corrosion ball fittings or directional flow fittings on the end of the resistant check valve between the heater outlet and return
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the water pressure switch; the control will accept Remote control connection: Connecting a remote: inputs via the keypad. Follow the process The heater is equipped for connection to an exter- described in the Owner/Operator manual to set nal 2-wire remote thermostat or a 3-wire remote Bypass Operation. Bypass Operation cannot be switch. A 2-wire thermostat has its own temperature set while any other fault code is displayed until sensor for regulating water temperature. A 3-wire that code is
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Section IV. Installer Check-out And Start-up 1 SAFETY WARNING: Do not remove the ⁄8” plug with 5. Turn on water system and start heater follow B. Gas pressure regulator adjustment procedure: General: the gas valve in the “ON” position. The gas valve ing the lighting instructions on the label inside 1. Remove access screw from the pressure Some of the following procedures will require the must be in the “OFF” position when the plug is the cabinet. If there is more than just the regulator. heater
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Section V. Consumer Operation & Maintenance Procedures FOR YOUR SAFETY – READ BEFORE OPERATING Installation below pool/spa surface: Two speed pump: It is recommended that residential spa water be 1. Clean filter thoroughly. In a few cases, the pressure from a two speed General: changed every 2 to 3 months to prevent water prob- 2. Set heater thermostat to highest setting pump is below the one pound minimum required to Water must be flowing through heater during oper- lems. Public spas may need t
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in blue ink and references “VER13” (the updated Warning: Version 13 software). Do not ingest alcohol or drugs during use or prior To turn the heater on, press the MODE key to put to using pool, spa, or hot tub. Ingestion of such intoxi- the heater in the POOL or SPA mode. The POOL LED cants can cause drowsiness which can lead to uncon- will illuminate to indicate that the control is in the POOL sciousness, and subsequently result in drowning. mode and the water temperature is to be controlled to
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The igniter is turned off when flame is sensed or 5. If the tenth ignition trial fails the control enters a 1. Periodically check the venting system on outdoor Winterization: after 4 seconds. safety lockout (or “hard” lockout) after the post- heaters. The heater’s venting areas must never be In moderate climate, the heater can continue to 5. If flame is sensed for more than 60 seconds the purge period of the tenth failed trial. obstructed in any way and minimum clearances operate during short
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Section VI. Qualified Technician - Maintenance/Servicing 1. Turn the two screws counterclockwise, which WARNING: It is not recommended that a wire General: secure the control door. brush be used to remove soot from the heat exchang- IMPORTANT: Only qualified service technicians, 2. Open the control panel to access the operating er. This may cause a spark and ignite the gases having appropriate test equipment, should be allowed controls. trapped within the soot. to service the heater. Bear in min
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Burner inspection and cleaning: Burner removal: (See Figure 48) Ignitor Removal Figure 49 With the heater on, remove the front door and 1. Turn pump, gas supply and heater power off. 2. Turn gas valve knob to “OFF”. make a visual inspection of the main burners through 3. Remove wires and gas line from the heater gas the inspection window. The main burner flames 1 valve. should be about ⁄2 to 2 inches in height and should 4. Remove valve mounting bracket. IGNITOR not “lift” off the ports of the
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To replace switch: Pressure Switch Control Locations 1. Turn pump, gas supply and heater power off. Figure 53 Figure 50 2. Open control panel door. BLOWER VACUUM SWITCH 3. Remove wires, screws and tubing from the switch. VENT PRESSURE SWITCH 4. Replace with new switch and reverse the above procedures. BYPASS VALVE Water pressure switch: (inside header) The pressure switch (Figure 53) is preset at the FLOW CONTROL THERMOSTAT factory for deck level installations. When the heater is (inside heade
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To replace thermal control valve and/or bypass By-pass valve: Thermal control valve: Combustion blower: valve parts: The header houses an automatic by-pass valve. The header also houses a thermal control valve. The combustion blower provides the air that mixes 1. Turn pump, main gas valve and heater power off. The valve provides proper water flow through the This valve helps to control condensation forming on with the gas from the main burners for the combus- 2. Remove drain plug and drain water
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Section VII. Troubleshooting Troubleshooting Chart IDL Heater Diagnostic Guide power is interrupted the heater will retain the selected General: mode and set points. If there is a call for heat “soft” Code Fault Diagnosis Step Remedy NOTE: These instructions are intended for the use lockout will end and the control will enter “hard” lockout. Disconnect plug from P5 connector from Fuse Board. Measure for 24vac between of qualified personnel trained and experienced in the pins of receptacle on F
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Troubleshooting Chart Troubleshooting Chart IDL Heater Diagnostic Guide IDL Heater Diagnostic Guide Code Fault Diagnosis Step Remedy Code Fault Diagnosis Step Remedy Inspect vent pressure switch wiring. Ensure wire harness terminals are securely 1. Verify that FC4 Fuse on Fuse Board Remove FC from fuseholder. Measure continuity across fuse. If OK, reinstall fuse 1. Check for faulty wiring or connection. fastened to spade terminals on vent pressure switch. If OK, proceed to step 2. is not op
