American Water Heater (A)BCG3 85T500-8N Dishwashing Machines, Closed Water Systems

Page 13

HOT WATER

OUTLET

12” TO 15” (30-38 cm)

TEMPERED WATER

OUTLET

COLD

 

CHECK

WATER

 

VALVE

INLET

 

MIXING

 

CHECK

 

VALVE

 

VALVE

 

 

 

TO TANK

 

INLET

Figure 10

Dishwashing Machines

All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water flow pressures between 15 and 25 pounds per square inch (103 kPa and 173 kPa). Flow pressures above 25 pounds per square inch (173 kPa), or below 15 pounds per square inch (103 kPa), will result in improperly sanitized dishes. Where pressures are high, a water pressure reducing or flow regulating control valve should be used in the 180°F (82°C) line to the dishwashing machine and should be adjusted to deliver water pressure between these limits.

The National Sanitation Foundation also recommends circulation of 180°F (82°C) water. Where this is done, the circulation should be very gentle so that it does not cause any unnecessary turbulence inside the water heater. The circulation should be just enough to provide 180°F (82°C) water at the point of take-off to the dishwashing machine.

Adjust flow by throttling a full port ball valve installed in the circulating line on the outlet side of the pump. Never throttle flow on the suction side of a pump. See Water Piping Diagrams in this manual.

Closed Water Systems

Water supply systems may, because of code requirements or such conditions as high line pressure, among others, have installed devices such as pressure reducing valves, check valves, and back flow preventers. Devices such as these cause the water system to be a closed system.

Thermal Expansion

As water is heated, it expands (thermal expansion). In a closed system the volume of water will grow when it is heated. As the volume of water grows there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failure is not covered under the limited warranty. Thermal expansion can also cause intermittent Temperature-Pressure Relief Valve operation: water discharged from the valve due to excessive pressure build up. This condition is not covered under the limited warranty. The Temperature-Pressure Relief Valve is not intended for the constant relief of thermal expansion.

A properly sized thermal expansion tank must be installed on all closed systems to control the harmful effects of thermal expansion. Contact a local plumbing service agency to have a thermal expansion tank installed.

See Water Line Connections on page 19 and the Water Piping Diagrams beginning on page 34.

Temperature-Pressure Relief Valve

Explosion Hazard

Temperature-Pressure Relief Valve must comply with ANSI Z21.22- CSA 4.4 and ASME code.

Properly sized temperature- pressure relief valve must be installed in opening provided.

Can result in overheating and excessive tank pressure.

Can cause serious injury or death.

This water heater is provided with a properly rated/sized and certified combination Temperature-Pressure Relief Valve (T&P valve) by the manufacturer. The valve is certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22 • CSA 4.4, and the code requirements of ASME.

If replaced, the new T&P valve must meet the requirements of local codes, but not less than a combination Temperature- Pressure Relief Valve rated/sized and certified as indicated in the above paragraph. The new valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater (150 psi = 1,035 kPa) and a discharge capacity not less than the water heater Btu/hr or kW input rate as shown on the water heater’s model rating label.

NOTE: In addition to the factory installed Temperature-Pressure Relief Valve on the water heater, each remote storage tank that may be installed and piped to a water heating appliance must also have its own properly sized, rated and approved Temperature- Pressure Relief Valve installed. Call the toll free technical support phone number listed on the back cover of this manual for technical assistance in sizing a Temperature-Pressure Relief Valve for remote storage tanks.

For safe operation of the water heater, the Temperature-Pressure Relief Valve must not be removed from its designated opening nor plugged. The Temperature-Pressure Relief Valve must be installed directly into the fitting of the water heater designed for the relief valve. Install discharge piping so that any discharge will exit the pipe within 6 inches (15.2 cm) above an adequate floor drain, or external to the building. In cold climates it is recommended that it be terminated at an adequate drain inside the building. Be certain that no contact is made with any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 feet (9.14 m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve.

13

Page 12 Page 14
Image 13
Page 12 Page 14
Contents Commercial gas water heaters Table Of Contents Asme CRN Safe Installation, Use and ServiceFire and Explosion Hazard General Safety InformationGrounding Instructions PrecautionsHydrogen Gas Flammable Abbreviations Used IntroductionQualifications Features and components Rough In Dimensions Installation considerations2 NPT Clearances Locating the Water HeaterModel Right Left Back Ceiling Side Insulation Blanket Installation On Combustible FlooringHard Water Circulation PumpsHigh Altitude Installations Propane InstallationsNatural Gas Installations Power Supply Installation RequirementsWater Temperature Controland Mixing Valves Gas Pressure RequirementsDishwashing Machines Temperature-Pressure Relief ValveClosed Water Systems Thermal ExpansionAir Requirements Contaminated AirUnconfined Space VENTING InstallationConfined Space Vent AdapterFresh Air Openings For Confined Spaces Multiple Heater ManifoldOutdoor Air Through Two Openings Outdoor Air Through One OpeningAir From Other Indoor Spaces Outdoor Air Through Two Vertical DuctsMultiple Gas Fired Tank-Type Heaters Technical Data VentingWater Line Connections Water heater installationValve Discharge Pipe Code Restrictions Installation Diagrams Top Inlet/Outlet UsageHeater Wiring Purging Gas PipingGas Pressure Regulator GAS Supply Pipe Length FeetGeneral AdjustmentsFilling Lighting & Operation Label For Your Safety Read Before OperatingIgniter Assembly Check the Igniter AssemblyCheck Venting Main BurnerRemote Storage Tank Temperature Control MAINTENANCETemperature-Pressure Relief Valve Test Checking the InputAnode Rod Inspection Hot Water OdorDraining and Flushing To Drain the Water Heater Storage TankDeliming Using Flo-Jug Method Tank Cleanout ProcedureDeliming Solvents Chemical Hazard For your information AIR in HOT Water Faucets High Water Temperature Shut OFF SystemSequence of Operation Flow Chart Complaint Cause Remedy User Service Agent Operational checklistWater Piping DiagramsTemperature & Pressure Temperature & Pressure Relief Valve Circulating Pump Multi Flue 2 Units Multi Flue 2 Units with Vertical Storage Tank Multi Flue 2 Units with Vertical Storage Tank Return from Multi Flue 2 Units TWO Temperature Multi Flue 2 Units with Booster TWO Temperature MULTI-FLUE 3 Units MULTI-FLUE 3 Units with Vertical Storage Tank MULTI-FLUE 3 Units with Horizontal Storage Tank Multi Flue Flue 4 Units MULTI-FLUE 4 Units with Vertical Storage Tank MULTI-FLUE 4 Units with Horizontal Storage Tank Manifold Kits For Technical ASSISTANCE, Service or Warranty Information

(A)BCG3 85T500-8N, (A)BCG3 85T500-8P specifications

American Water Heater has long been a trusted name in the industry, providing high-quality solutions for residential and commercial water heating needs. Among its impressive lineup of products, the (A)BCG3 85T500-8P and (A)BCG3 85T500-8N models stand out due to their outstanding efficiency, performance, and innovative technologies.

These water heaters are primarily classified as high-efficiency gas water heaters, designed to meet a variety of usage demands. With a robust design and advanced technological features, they cater to homes and businesses that require reliable and energy-efficient hot water solutions.

One of the most notable features of the (A)BCG3 85T500-8P and (A)BCG3 85T500-8N models is their remarkable thermal efficiency. They are engineered to optimize energy usage, which not only helps reduce utility bills but also minimizes environmental impacts. This energy efficiency is achieved through advanced insulation and heat exchange technologies that maintain water temperature with minimal energy expenditure.

Both models come equipped with a powerful gas burner that allows for rapid heating, making them ideal for high-demand scenarios. The innovative burner technology ensures even heat distribution, significantly reducing recovery time and ensuring that hot water is available whenever needed.

In terms of safety, American Water Heater has incorporated several features to protect users and the unit itself. These include safety shut-off valves and temperature control features that prevent overheating and provide peace of mind.

Durability is another hallmark of these models. Constructed with high-quality materials, they resist the wear and tear commonly associated with traditional water heaters. Furthermore, the design of the (A)BCG3 85T500-8P and (A)BCG3 85T500-8N emphasizes ease of maintenance, allowing for simpler servicing and reduced downtime.

Finally, both models are backed by American Water Heater's commitment to customer satisfaction, supported by comprehensive warranties and reliable customer service. This assurance adds value to their products, making them a preferred choice for consumers seeking efficient and dependable water heating solutions.

In conclusion, the (A)BCG3 85T500-8P and (A)BCG3 85T500-8N models exemplify American Water Heater’s dedication to innovation and efficiency, making them excellent options for anyone in need of advanced water heating technology.
Top Page Image Contents