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Raypak 407A - User Manual

Raypak 407A
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INSTALLATION & OPERATING
INSTRUCTIONS
Gas-Fired
Pool & Spa
Heater
Catalog No. 6000.59U Effective: 10-06-10 Replaces: 06-10-10 P/N 241236 Rev. 22
WARNING: If these instructions are not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
WHAT TO DO IF YOU SMELL GAS:
• 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 sup-
plier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or
the gas supplier.
This manual should be maintained in legible condition and kept adjacent to the heater or in a safe place for future
reference.
Atmospheric Models
206A, 266A, 336A & 406A
Lo NOx Models
207A, 267A, 337A & 407A
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.

Table of Contents

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Installation And Operation Manual48 pages

Questions and Answers

  • V
    vyatesSep 9, 2025
    Why is my Raypak 407A Gas Heater going on and off continuously?
    • L
      Lindsay RodriguezSep 9, 2025
      Your Raypak Gas Heater might be turning on and off continuously due to several reasons. The filter may be dirty, requiring cleaning or replacement. The water level in the pool could be low and needs to be raised. The external bypass setting might be out of adjustment, so try adjusting the bypass. Alternatively, the pressure switch could be incorrectly adjusted; in this case, adjust the pressure switch.
  • K
    keith17Sep 7, 2025
    What causes a brittle and leaking gasket in my Raypak 407A Gas Heater?
    • A
      amber50Sep 8, 2025
      If the gasket in your Raypak Gas Heater is brittle and leaking, it could be caused by the heater running after the pump shuts off. Refractory damage can also cause this problem, so replace the refractory. Another potential cause is a sooted heater; determine the cause of the sooting and correct it.
  • M
    Megan BridgesAug 22, 2025
    Why is my Raypak 407A Gas Heater turning on and off repeatedly?
    • T
      tamaramarshallAug 22, 2025
      If your Raypak Gas Heater is going on and off continuously, the issue could stem from a few different causes. The filter might be dirty, requiring a cleaning or replacement. The water level in your pool might be too low, so try raising it. The external bypass setting may be out of adjustment, requiring an adjustment. Lastly, the pressure switch could be out of adjustment, and you should adjust it.
  • A
    Ashley ThomasSep 5, 2025
    What causes a Raypak Gas Heater to leak at the well?
    • H
      Heather BurchSep 5, 2025
      If you find a leak at the well of your Raypak Gas Heater, it may be due to overacidic conditions. Replace the well and maintain proper water chemistry to resolve this issue.
  • B
    Brian SmithSep 4, 2025
    What causes liming or scale forming in the exchanger of my Raypak 407A Gas Heater?
    • M
      Michelle KellySep 4, 2025
      If you notice liming or scale forming in the exchanger of your Raypak Gas Heater, it could be due to the pool water. Bypassing too much water can also cause this issue; inspect the bypass for movement, and if there's no movement, replace it. Additionally, if the U.G. is not functioning, replace it if there is no movement when heated.
  • J
    Jennifer WardSep 2, 2025
    How to fix harmonics or whining noise coming from my Raypak 407A?
    • D
      Derek WilkinsSep 2, 2025
      If your Raypak Gas Heater is producing harmonics or a whining noise, it could be due to several reasons. The U.G. might be inoperative; check its movement by putting it in hot water (110°F or higher), and replace it if there's no movement. There might be debris or a restriction in the system; locate the restriction and remove it, then flush and clean the system. Debris in the gas line could also be the cause; remove the debris or blow out the gas line. Low flow could also be the problem; scale may be forming in the heat exchanger, so clean the heat exchanger and check the pool's pH and total alkalinity.
  • P
    Patricia SchneiderSep 1, 2025
    What causes a pilot outage or weak flame signal in my Raypak 407A?
    • D
      Denise ClarkSep 1, 2025
      If you're experiencing a pilot outage or a weak flame signal in your Raypak Gas Heater, it could be due to low gas pressure, so adjust the gas pressure. It could also be due to a restricted or dirty pilot, so clean the pilot and/or electrode. Alternatively, the pilot generator might be weak, in which case you should replace the pilot.
  • A
    andersonpennyAug 31, 2025
    What to do if the outer jacket of my Raypak 407A Gas Heater is very hot and the paint is blistered?
    • A
      Ashley MannAug 31, 2025
      If the outer jacket of your Raypak Gas Heater is very hot and the paint is blistered, it could be due to a broken refractory caused by shipping damage or improper combustion, in which case you should replace the refractory panels. Another cause could be excessive sooting of the heat exchanger; determine the cause of sooting and correct it.
  • R
    Robert FowlerAug 30, 2025
    What causes sooting in my Raypak Gas Heater?
    • J
      Jose HerreraAug 30, 2025
      If your Raypak Gas Heater is sooting, it could be due to several reasons. High flow rates might be the cause; reduce them by adding a manual bypass valve and adjust it until the heater outlet water temperature is between 105°F and 110°F. The U.G. might be inoperative; check its movement by putting it in hot water (110°F or higher), and replace it if there's no movement. Air starvation could be the issue. Improper venting could also cause sooting. Insects or debris clogging the burner intake ports can also lead to sooting; clean the burners in this case.
  • D
    Daniel RiversAug 28, 2025
    Why does my Raypak 407A Gas Heater take so long to heat my pool or spa?
    • J
      jessica73Aug 29, 2025
      If your Raypak Gas Heater takes too long to heat your pool or spa, several factors could be at play. It may be that the heater is undersized. You can calculate the heating capacity of your heater using the formula: Heater output (BTUH) / (Pool gallonage x 8.33), or refer to the heater sizing chart. Remember that this calculation doesn't account for heat loss due to weather. The filter may not be running long enough, so try resetting the time clock. A dirty filter could also be the culprit, so try cleaning it. Finally, the gas line or meter might be undersized.

Summary

Owners Operating Instructions

Start-Up Procedures

Procedures to follow before and during the initial operation of the heater.

Lighting and Shut-Off Procedures

Detailed steps for lighting and shutting down the millivolt and electronic ignition systems.

Post-Start-Up and Cautionary Guidelines

Post-start-up checks, warnings, and safety guidelines for water temperature.

Maintenance and Care Procedures

Routine maintenance tasks for ensuring optimal heater performance and longevity.

Cold Weather Operation and Winterizing

Procedures for operating and winterizing the heater in cold weather conditions.

Installation and Service Instructions

Receiving Equipment

Guidelines for inspecting and verifying heater components upon delivery.

General Specifications

Technical details, ambient temperature ratings, and elevation considerations for the heaters.

Installation Instructions

Requirements, clearances, and procedures for installing the pool and spa heater.

Servicing Instructions

Guidance on locating controls, panel removal, and adjustments for maintenance.

Troubleshooting Guide

Common problems, their causes, and solutions for mechanical and electrical issues.

Replacement Parts

Catalog of available replacement parts with corresponding model numbers.

Raypak 407A Specifications

General IconGeneral
BrandRaypak
Model407A
CategoryGas Heater
LanguageEnglish

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