For this application:

Pump should be controlled by an Aquastat, Timer or Combination Aquastat and Timer.

Pump to be sized to maintain circulation loop temperature.

The pump should be sized to overcome the pressure loss through the tank water heater, and supply and return plumbing in the circulation loop. Reference the section Pump Sizing for Circulation.

Pump to be of bronze or stainless construc- tion.

Tankless

Water Heater

Primary

 

 

 

 

 

 

 

Tankless

 

 

 

Tankless

 

 

 

 

Water Heater

Water Heater

 

 

 

 

 

 

 

 

Sub 1

 

 

 

 

Sub 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tankless

 

Equipment

List

QTY

Tankless

3

Water Heaters

 

Electronic Connection *

*Refer to Tankless Accessories and Model Applicability for electronic connection details.

23

Hot Water Supply Line

(Optional) Header Sized One Pipe Size Larger Than Hot Water Supply Line - (To eliminate cold water sandwich effect

caused by frequent On/Off operation)

Aquastat Connection

Gas Supply

Cold Water Supply Line

 

 

 

Tank Water Heater sized to

 

Gas or Electric

 

 

Tank Water

maintain circulation loop

 

 

Heater

temperature

 

 

 

 

Smaller Return Line

 

Can Be Used After

Expansion Tank

The Last Fixture

 

Building Outlets

Drawing Number:

WH-3-RGE

Drawing Date:

February 27, 2008

Domestic Hot Water - Circulation Systems

3 Tankless Water Heaters with Gas or Electric Tank

Preferred Piping Installation

This is not an engineering drawing; it is intended only as a guide and not as a replacement for professional engineering project drawings. This drawing is not intended to describe a complete system. It is up to the

Key

contractor or engineer to determine the necessary components and configuration of the particular system to be installed. The drawing does not imply compliance with local building code requirements. It is the responsibility of the engineer or contractor to ensure that the installation is in accordance with all local building codes. Confer with local building officials before installation.

3/4" Ball Valve

3/4" Union

Check Valve

Pressure Relief Valve

S

Pressure Regulator

Circulating Pump

Boiler Drain Valve

Solenoid Valve

Page 23
Image 23
American Water Heater GT-505-PI, ATO-505-N, ATI-705-N, ATI-505-P, ATI-305-N, ATO-305-P, ATI-305-P, ATI-705A-P, ATI-505-N WH-3-RGE

ATO-705A-P, GT-305-NI, GT-705-NI, ATI-505-N, ATI-705A-N specifications

American Water Heater has long been regarded as a trusted name in the water heating industry, and among its impressive lineup is the ATI-705A-P, GTS-705-PEA, GT-705-PE, GT-305-NE, and GTS-705-NEA models. Each of these units incorporates cutting-edge technologies and design features, ensuring high-performance and energy-efficient water heating solutions for modern households.

Starting with the ATI-705A-P model, it stands out for its high-efficiency water heating capabilities. This unit is equipped with a powerful gas burner that ensures rapid heating. It features an intuitive digital thermostat, which allows users to easily set their desired water temperature, ultimately improving user satisfaction and comfort. The ATI-705A-P also incorporates a durable tank lining that prevents corrosion, extending the lifespan of the product.

Moving on to the GTS-705-PEA and GT-705-PE models, these units are known for their eco-friendly design and energy efficiency. They use advanced insulation technology to minimize heat loss, ensuring that energy is conserved while still delivering hot water on demand. Both models are equipped with high-performance heating elements that provide a quick recovery rate, making them ideal for households with higher hot water needs.

The GT-305-NE model is particularly noteworthy, equipped with a powerful burner that provides consistent hot water supply, making it an excellent choice for larger homes. Its compact design allows for versatile installation options, while still maintaining a large capacity. This model also includes a high-efficiency rating, ensuring energy savings and environmental benefits.

Finally, the GTS-705-NEA offers an innovative approach with its user-friendly features and smart technology integration. It provides Wi-Fi connectivity, allowing users to monitor and control their water heater remotely. This added functionality ensures convenience and efficiency, keeping hot water readily available at all times.

In summary, the American Water Heater ATI-705A-P, GTS-705-PEA, GT-705-PE, GT-305-NE, and GTS-705-NEA models present a range of impressive features and characteristics that cater to diverse household needs. With a strong focus on energy efficiency and advanced technology, these models not only deliver reliable hot water but also contribute positively to the environment, making them wise investments for any home.