Raypak 302A-902A manual Automatic Chlorinators and Chemical Feeders, Winterizing Your Heater

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circulate water through the heater from the main sys- tem piping.

To complete the installation of the pool heater, the pool thermostat needs to be installed in the main return wa- ter line, upstream of the heater. This will ensure that the heater will be energized at the right time. If the main water line is too far away from the heater and the capillary bulb will not reach it, locate the pool thermo- stat adjacent to the main line and run wires back to the heater.

perature to 105°F and Valve A is fully open, then slowly throttle Valve B closed to increase the inlet water temperature to 105°F.

Fig. 14: Single Pool Heater Application

Adjustment of the manual bypass valve is critical to proper operation of the heater. The manual bypass valve should be adjusted to achieve a minimum inlet water temperature of 105°F and an outlet water tem- perature below 140°F. When starting with a cold pool, make initial adjustments. Make final adjustments when pool water approaches desired temperature.

The use of a bypass is required for proper operation in a pool heating application. Use the following instruc- tions to set the manual bypass:

1.Set Valve A (the bypass) to 1⁄2 open position, and Valve B to fully open position.

2.Turn on pump.

3.Turn on heater and wait until heater goes to full fire.

4.Adjust Valve A until the inlet water temperature is 105°F. NOTE: Opening the valve will increase the temperature and closing the valve will decrease the temperature.

5.If this process does not raise the inlet water tem-

Fig. 15: “H” Bypass Setting

Automatic Chlorinators and Chemical Feeders

CAUTION: Combustion air must not be contami- nated by corrosive chemical fumes which can dam- age the heater and void the warranty.

All chemicals must be introduced and completely di- luted into the pool or spa water before being circulated through the heater. Do not place chlorine tablets or bromine sticks in the skimmer. High chemical concen- trations will result when the pump is not running (e.g. overnight).

Chlorinators must feed downstream of the heater and have an anti-siphoning device to prevent chemical back-up into the heater when the pump is shut off.

NOTE: High chemical concentrates from feeders and chlorinators that are out of adjustment will cause very rapid corrosion of the heat exchanger in the heater. Such damage is not covered under the war- ranty.

Winterizing Your Heater

Heaters installed outdoors in freezing climate areas should be shut down for the winter. To shut down heater, turn off manual main gas valve and main gas

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Contents Installation and Operating Instructions Page Contents Pay Attention to These Terms Ratings and Certifications Before InstallationProduct Receipt Model IdentificationComponent Locations Back Component LocationsModel # Burners per Stages Fire at Valve General InformationModel # Burners Valve Firing Per Valve Staging Time/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Stacking InstallationInstallation Codes Equipment BaseOutdoor Installations Indoor InstallationsClearances Installations1 Canadian Installations2 Direct Vent Combustion and Ventilation AirIndoor Units Reversing Air FilterAll Air from Inside the Building InstallationsConventional Combustion Air Supply TruSeal Combustion AirReversing Water Connections Canadian InstallationsWater Piping GeneralCold Water Operation Relief Valve Piping Hydrostatic TestMin. Flow Max Flow Gpm Temperature & Pressure GaugeHydronic Heating Pump SelectionThree-Way Valves Pressure Drop in Feet of Head Feedwater RegulatorPiping Air-Separation/Expansion TankPool Heating Potable Water and Space HeatingWinterizing Your Heater Automatic Chlorinators and Chemical FeedersTotal Dissolved Solids Gas SupplyPool/Spa Water Chemistry Water Hardness PH of WaterReversing Gas Supply Connection Gas Supply ConnectionTable J Maximum Equivalent Pipe Length Field-Connected Controllers Electrical Power ConnectionsCheck the Power Source Gas Supply PressureMaking the Electrical Connections Field Wiring ConnectionWiring Connections Appliance Categories VentingStainless Steel Support of Vent StackVent Terminal Location Direct Venting Horizontal ThroughCanadian Installations InstallationsChanging the Flue Outlet Natural Draft Vertical Venting Category Venting Installation TipsVenting Configurations InstallationMin Max TerminationCommon Venting System Model Venting Vent Size Height Intake Pipe Max. LengthHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryMax. Length Venting Vent Size Equivalent Intake Pipe Direct Vent Horizontal Through- the-WallMaterial Direct Vent Vertical Controls Outdoor InstallationFreeze Protection Models 302A, 402A, 502A, 652A, 752A and 902A Heater Sequence of OperationExternal Lights Color Indication Auto Reset High Limit Red Auto reset optionInternal Lights Color Indication Code Condition Ignition ModuleOperating Control High Limit Manual ResetFlow Switch High and Low Gas Pressure SwitchesHigh/Low Gas Pressure Switch Direct Venting Horizontal Through AL29-4C 87%-Efficiency Boilers Special Instructions Water PipingVenting Appliance Categories Model 10F 20F 30F Min. Flow Max Flow GpmVent Terminal Location Vertical Venting CategoryCondensate Management 40’ 752AE Combustion Air 902AE 30’ 80’ Certified Maximum Combustion Air Air Inlet Model VentingMaterial Vent Length 100’ DuctedDirect Vent Horizontal Through- the-Wall 100’ 40’ 752A 902A Direct Vent VerticalCertified Vertical Venting Combustion Air Air Inlet 302A 100’ 402A Galvanized Steel 502A 75’ Category 25’Wiring Diagram Pre Start-up START-UPMain Burner Adjustment Blower AdjustmentStart-Up Pilot Turn-Down Test Safety InspectionLeak Test Procedure Dual-Seat Gas Valves Follow-UpLeak Test Post Start-Up CheckLighting Instructions OperationTo Turn Off Gas To Appliance Step TroubleshootingSuggested Minimum Maintenance Schedule MaintenancePreventive Maintenance Schedule As Required WeeklySemi-Annually AnnuallyInside Air Contamination AppendixLimited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P

302A-902A specifications

The Raypak 302A-902A is a highly regarded pool and spa heater, known for its efficiency and reliability in delivering warmth to residential and commercial aquatic applications. This heater stands out due to its robust design, advanced technology, and user-friendly features.

One of the key characteristics of the Raypak 302A-902A is its dual fuel capability, which means it can run on either natural gas or propane. This flexibility allows users to choose their preferred fuel type, contributing to operational efficiency and cost-effectiveness. With a BTU output ranging from 302,000 to 902,000, the Raypak heater is capable of quickly heating large volumes of water, making it ideal for pools, spas, and hot tubs.

The heater incorporates advanced technology such as a stainless steel heat exchanger, which not only ensures excellent thermal conductivity but also promotes durability against corrosion. This is especially advantageous in harsh environments, where exposure to chemicals can significantly impact the lifespan of traditional copper heat exchangers. The Raypak 302A-902A's heat exchanger is designed to withstand the rigors of constant use while maintaining high performance levels.

Another prominent feature of the Raypak 302A-902A is its digital display control system, which simplifies the operation and monitoring of the heater. Users can easily set and adjust temperatures, as well as access diagnostic information, all through an intuitive interface. This digital control not only enhances user experience but also aids in the timely maintenance of the unit.

Energy efficiency is another major selling point of the Raypak 302A-902A. The heater is designed with environmentally friendly practices in mind, utilizing a low NOx burner that minimizes harmful emissions. This not only meets environmental regulations but also makes it a greener alternative for heating needs.

In terms of installation, the compact design of the Raypak 302A-902A allows for versatile placement options, whether in a residential backyard or a commercial environment. Its user-friendly installation process ensures that homeowners and businesses alike can enjoy the benefits of heated water with minimal hassle.

Overall, the Raypak 302A-902A is an exemplary choice for anyone seeking a high-quality, efficient, and flexible pool and spa heating solution. Its combination of robust engineering, advanced technology, and user-focused features solidifies its position as a leader in the market, promising effective heating for years to come. Whether for personal enjoyment or commercial use, this heater delivers exceptional performance that meets diverse heating needs.
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