Hayward W3H135FDP
Hayward W3H135FDP H-Series Propane Pool Heater User Manual
Model: W3H135FDP
1. Introducció
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Hayward W3H135FDP H-Series Propane Pool Heater. Please read this manual thoroughly before attempting to install or operate the heater. Keep this manual for future reference.
The Hayward H-Series heater is designed for heating above-ground pools using propane gas. It features a durable cupro nickel heat exchanger, an intuitive electronic control panel, and forced-draft combustion for reliable performance in various weather conditions.

Davant view of the Hayward W3H135FDP H-Series Propane Pool Heater, highlighting its 135,000 BTU capacity, propane fuel type, and suitability for above-ground pools.
2. Informació important de seguretat
ADVERTIMENT: La instal·lació, l'ajustament, l'alteració, el servei o el manteniment inadequats poden causar danys a la propietat, lesions o la mort. Llegiu atentament les instruccions d'instal·lació, funcionament i manteniment abans d'instal·lar o donar servei a aquest equip.
- Desconnecteu sempre l'alimentació abans de fer el servei.
- Assegureu-vos una ventilació adequada al voltant de l'escalfador.
- No emmagatzemeu ni utilitzeu gasolina o altres vapors i líquids inflamables a prop d'aquest o qualsevol altre aparell.
- La instal·lació i el servei han de ser realitzats per un instal·lador qualificat, agència de servei o proveïdor de gas.
- This heater is designed for propane gas only. Do not attempt to use natural gas.
- Mantingueu els nens i les mascotes lluny de l'escalfador.
3. Contingut del paquet
Verify that all components are present before beginning installation. If any parts are missing or damaged, do not proceed with installation and contact Hayward customer support.
- Hayward W3H135FDP H-Series Propane Pool Heater unit
- Manual d'usuari (aquest document)
- Installation hardware (specific items may vary, refer to packing list)
4. Configuració i instal·lació
Installation must comply with all local codes and ordinances. In the absence of local codes, refer to the National Fuel Gas Code (ANSI Z223.1/NFPA 54) or the Natural Gas and Propane Installation Code (CSA B149.1).
4.1 Requisits d'ubicació
- Install the heater outdoors, on a level, non-combustible surface.
- Maintain adequate clearances from combustible materials and other equipment. Refer to the heater's data plate for specific clearance requirements.
- Ensure the location allows for proper ventilation and drainage.
- Avoid locations where the heater may be exposed to excessive wind or spray from the pool.
4.2 Connexions de fontaneria
Connect the heater to your pool's filtration system. The heater should be installed after the filter and before any chemical feeders.
- Use appropriate plumbing fittings and sealants to prevent leaks.
- Ensure proper water flow through the heater. Insufficient flow can cause damage.

lateral view of the heater, illustrating the plumbing inlet/outlet and the forced-draft combustion system.
4.3 Gas Connections (Propane Only)
IMPORTANT: This heater is factory-set for propane gas. Do not attempt to convert it to natural gas. Gas connections must be made by a qualified professional.
- Connect the propane supply line to the heater's gas inlet.
- Ensure all gas connections are tight and leak-free. Use a leak detection solution to check for leaks.
- Install a manual gas shut-off valve upstream of the heater.
4.4 Connexions elèctriques
Electrical wiring must be performed by a qualified electrician in accordance with all local codes and the National Electrical Code (NFPA 70).
- Assegureu-vos que l'escalfador estigui correctament connectat a terra.
- Connecteu l'escalfador a un circuit dedicat amb la protecció de sobrecorrent adequada.
5. Instruccions de funcionament
5.1 Inici inicial
- Ensure the pool pump is running and there is adequate water flow through the heater.
- Open the manual gas shut-off valve to supply propane to the heater.
- Turn on the electrical power to the heater.
- The electronic control panel will illuminate.
5.2 Configuració de la temperatura desitjada
Use the intuitive electronic control panel to set your desired pool temperature.
- Press the "Mode" button to select the pool heating function.
- Use the up/down arrow buttons to adjust the target temperature.
- The heater will automatically ignite and begin heating the water to the set temperature.

The electronic control panel for setting and monitoring pool temperature.
5.3 Apagar l'escalfador
- To temporarily stop heating, turn off the heater via the control panel.
- For extended shutdown or servicing, close the manual gas shut-off valve and turn off the electrical power to the heater.
6. Manteniment
Regular maintenance ensures optimal performance and longevity of your Hayward H-Series heater. Always disconnect power and gas supply before performing any maintenance.
6.1 Comprovacions rutinàries
- Mensual: Inspect the area around the heater for debris, obstructions, or signs of leaks.
- Estacionalment: Check the heat exchanger for scale buildup or corrosion. If necessary, clean according to manufacturer guidelines or consult a qualified service technician.
- Ensure proper water chemistry in your pool to prevent damage to the heater's components.
6.2 Hivernització
In areas subject to freezing temperatures, proper winterization is crucial to prevent damage.
- Turn off the heater and disconnect both electrical power and gas supply.
- Drain all water from the heater's plumbing and heat exchanger. Use a shop vacuum or air compressor to ensure all water is removed.
- Store the heater in a dry, protected area if possible, or cover it with a weather-resistant cover.
7. Solució De Problemes
Abans de contactar amb l'atenció al client, review els següents problemes i solucions habituals.
| Problema | Causa possible | Solució |
|---|---|---|
| L'escalfador no s'encén. | No gas supply, low water flow, electrical issue, faulty igniter. | Check gas valve, ensure pump is running, verify power, consult service technician. |
| L'escalfador s'encén i s'apaga amb freqüència. | Cabal d'aigua insuficient, filtre brut, aire al sistema, escalfador massa gran. | Check pump and filter, bleed air from system, consult pool professional. |
| Error code displayed on panel. | Error específic del sistema. | Refer to the heater's specific error code list in the full manual or contact support. |
| L'aigua no s'escalfa. | Incorrect temperature setting, low gas pressure, heat exchanger issue. | Verify temperature setting, check gas supply, contact service technician. |
If troubleshooting steps do not resolve the issue, contact Hayward customer support or a qualified service professional.
8. Especificacions
- Model: W3H135FDP
- Tipus de combustible: Gas propà
- Entrada de BTU: 135,000 BTU/hora
- Eficiència tèrmica: 82%
- Termocambiador: Cupro Nickel
- Dimensions (L x A x A): Aproximadament 30.3 x 21.4 x 22.6 polzades (77 x 54.4 x 57.4 cm)
- Pes de l'article: Aproximadament 117.5 lliures (53.3 kg)
- Requisits elèctrics: Consulteu l'etiqueta del producte per al volum específictage i amperage.
- Emissions de NOx: Low NOx (meets clean air quality standards)

Product dimensions and weight for the Hayward W3H135FDP H-Series Pool Heater.

Diversos views of the Hayward W3H135FDP H-Series Pool Heater, illustrating its design from different angles.
9. Garantia i Suport
Hayward provides a limited warranty for its products. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Hayward weblloc.
For technical assistance, parts, or service, please contact Hayward customer support:
- Weblloc: www.hayward.com
- Telèfon: Refer to the Hayward weblloc per als números de contacte regionals.
When contacting support, please have your model number (W3H135FDP) and serial number ready.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.







