Raypak 902B, 302B manual PH of Water, Total Dissolved Solids

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Raypak water heaters can operate lime/scale-free using potable water with a hardness not exceeding 25 grains per gallon. Proper operation is achieved by set- ting the temperature rise/water flow per the guidelines in the installation instructions. If the hardness of the water exceeds the maximum level of 25 grains per gal- lon special measures must be taken to adjust flow and temperature rise. Water should be softened to a hard- ness level no lower than 5 grains per gallon. Water softened as low as 0 to 1 grain per gallon may be under-saturated with respect to calcium carbonate resulting in water that is aggressive and corrosive.

pH of Water

pH is a measure of relative acidity, neutrality or alka- linity. Dissolved minerals and gases affect water’s pH. The pH scale ranges from 0 to 14. Water with a pH of

7.0is considered neutral. Water with a pH lower than 7 is considered acidic. Water with a pH higher than 7 is considered alkaline. A neutral pH (around 7) is desir- able for most potable water applications. Corrosion damage and water heater failures resulting from water pH levels of lower than 6 or higher than 8 are non-war- rantable. The ideal pH range for water used in a storage tank or a copper water heater system is 7.2 to

Total Dissolved Solids

Total dissolved solids (TDS) is the measure of all min- erals and solids that are dissolved in the water. The

concentration of total dissolved solids is usually ex- pressed in parts per million (ppm) as measured in a water sample. Water with a high TDS concentration will greatly accelerate lime and scale formation in the hot water system. Most high TDS concentrations will precipitate out of the water when heated. This can generate a scale accumulation on the heat transfer surface that will greatly reduce the service life of a water heater. This scale accumulation can also impede adequate flow of water and may totally block the water passages in the tubes of the heat exchang- er. A heat exchanger that is damaged or blocked by lime/scale accumulation must be replaced. Failure of a water heater due to lime scale build up on the heating surface is non-warrantable. The manufacturer of the water heater has no control of the water quality, espe- cially the TDS levels in your system. Total dissolved solids in excess of 2,500 ppm will accelerate lime and scale formation in the heat exchanger. Heat exchang- er failure due to total dissolved solids in excess of 2,500 ppm is a non-warrantable condition. Raypak offers basic temperature guidelines for operation of a potable water heater on normal to moderate levels of hardness and solids but levels of hardness and total dissolved solids beyond normal limits for operation will require special setup and operation.

NOTE: Failure of a heat exchanger due to lime scale build-up on the heating surface, low pH or other chemical imbalance is non-warrantable.

Recommended Level(s)

Fiberglass Pools

Fiberglass Spas

Other Pool and Spa

Types

 

 

 

 

 

 

 

Water Temperature

68-88°F (20-31°C)

89-104°F (31-40°C)

68-104°F (20-40°C)

 

 

 

 

pH

7.3-7.4

7.3-7.4

7.6-7.8

 

 

 

 

Total Alkalinity (ppm)

120-150

120-150

80-120

 

 

 

 

Calcium Hardness (ppm)

200-300

150-200

200-400

 

 

 

 

Salt (ppm)

3000 Maximum

3000 Maximum

3000 Maximum

 

 

 

 

Free Chlorine (ppm)*

2-3

2-3

2-3

 

 

 

 

Total Dissolved Solids

1500 Maximum**

1500 Maximum**

1500 Maximum**

(ppm)

 

 

 

 

 

 

 

*Free Chlorine MUST NOT EXCEED 5 ppm!

 

 

**In salt water chlorinated pools, the total TDS can be as high as 4500ppm

 

NOTE: The allowable concentrations of salt and of the Total Dissolved Solids are lower for the Hi Delta than for a typical residential pool heater, due to the higher water temperatures at which a Hi Delta operates.

Table J: Water Chemistry

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Contents Installation & Operating Instructions Deletions None Contents Pay Attention to These Terms Before Installation Installations at ElevationProduct Receipt Model IdentificationComponent Locations Component Locations BackGeneral Information Water Time to Produce Serious Temp Burn General SafetyTime/Temperature Relationships in Scalds Installation Installation CodesEquipment Base StackingClearances Indoor InstallationsOutdoor Installations Ft 91 cm within a Combustion and Ventilation Air Indoor UnitsReversing Air Filter Direct VentInstallations Conventional Combustion Air SupplyTruSeal Combustion Air All Air from Inside the BuildingCanadian Installations Water PipingGeneral Reversing Water ConnectionsRelief Valve Piping Hydrostatic Test Cold Water OperationTemperature & Pressure Gauge Hydronic HeatingPump Selection Cold Water StartsPressure Drop in Feet of Head Feedwater Regulator PipingAir-Separation/Expansion Tank Three-Way ValvesPotable Water and Space Heating Pool HeatingAutomatic Chlorinators and Chemical Feeders Winterizing Your HeaterPool/Spa Water Chemistry Water HardnessPH of Water Total Dissolved SolidsGas Supply Gas Supply ConnectionModel Table K Maximum Equivalent Pipe LengthField-Connected Controllers Electrical Power ConnectionsGas Supply Pressure Making the Electrical Connections Field Wiring ConnectionCheck the Power Source Stage Tankstat Venting Flue Exhaust TeeModel Diameter Order Number Appliance CategoriesSupport of Vent Stack Vent Terminal LocationChanging the Flue Outlet InstallationsCanadian Installations Venting Installation Tips Venting ConfigurationsInstallation Natural Draft Vertical Venting CategoryTermination Common Venting SystemCertified Vertical Venting Combustion Air Air Inlet HeightHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryDirect Vent Horizontal Through- the-Wall Model Certified Maximum Combustion Air InletVenting EquivalentDirect Vent Vertical Direct Vent VerticalFreeze Protection Outdoor InstallationControls Heater Sequence of Operation Models 302B-902BExternal Lights Color Indication Ignition Module Code ConditionHigh Limit Manual Reset Flow SwitchHigh and Low Gas Pressure Switches Low Water Cut-Off OptionalPump Time Delay UDB Diagnostic BoardUDB Fault History Table R UDB Fault Messages 87%-Efficiency Boilers Special Instructions Water PipingVenting Appliance Categories Model 10F 20F 30F Min. Flow Max Flow GpmCondensate Management Vertical Venting CategoryVent Terminal Location Certified Maximum Combustion Air Air Inlet Model Venting 752BE Combustion Air 902BE 30’ 80’Direct Vent Horizontal Through- the-Wall ABS Cpvc Wiring Diagram START-UP Pre Start-upStart-Up Blower AdjustmentMain Burner Adjustment Safety Inspection Leak Test Procedure Dual-Seat Gas ValvesFollow-Up Pilot Turn-Down TestPost Start-Up Check Leak TestTo Turn Off Gas To Appliance OperationLighting Instructions Troubleshooting StepPreventive Maintenance Schedule MaintenanceSuggested Minimum Maintenance Schedule Weekly Semi-AnnuallyAnnually As RequiredAppendix Inside Air ContaminationLimited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P START-UP Checklist for FAN-ASSISTED Raypak Products Important Instructions for the Commonwealth of Massachusetts
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302B, 902B specifications

Raypak is a prominent name in the heating industry, particularly known for its advanced technology and robust design in residential and commercial heating solutions. Two of their notable models, the Raypak 302B and 402B, exemplify innovation and efficiency in hydronic heating systems, designed to meet diverse needs while ensuring optimal performance.

The Raypak 302B and 402B are high-efficiency boilers that utilize gas-fueled systems. The 302B model has a heating capacity of 302,000 BTU/h, while the 402B boasts a maximum capacity of 402,000 BTU/h. This range of heating output makes these models suitable for a variety of applications, from residential heating needs to larger commercial spaces that require a reliable heat source.

One of the standout features of the Raypak 302B and 402B is their use of fire-tube heat exchanger technology. This design promotes efficient heat transfer and allows for lower emissions, thus minimizing the environmental impact. The fire-tube design also contributes to a longer lifespan and reduced maintenance costs, making these boilers a cost-effective solution over time.

Equipped with advanced control systems, the Raypak 302B and 402B ensure precise temperature regulation and improved energy usage. The digital display provides real-time feedback and diagnostics, enhancing user experience and simplifying troubleshooting. These models are also compatible with various building management systems, providing users with versatility in integration to optimize building performance.

In addition to their technological advancements, these boilers are designed with user safety and convenience in mind. They include features such as built-in safety controls, easy access for service and maintenance, and a compact footprint to fit into tight spaces. Their robust construction ensures durability, which is crucial for systems that operate under high demand.

Moreover, both models have been engineered to succeed in various climates, making them reliable choices for users in diverse geographical locations. With their energy-efficient operation, reliable performance, and advanced features, the Raypak 302B and 402B embody quality and innovation in the heating market, ensuring comfortable environments while lowering energy costs and environmental footprints.
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