American Water Heater ATI-305-P Water Heater User Manual


 
Drawing Number:
Drawing Date:
Pressure Relief Valve
3/4" Ball Valve
3/4" Union
Check Valve
Key
S
Pressure Regulator
Circulating Pump
Solenoid Valve
Boiler Drain Valve
WH-1-RGE
Domestic Hot Water - Circulation Systems
1 Tankless Water Heater with Gas or Electric Tank
Preferred Piping Installation
February 27, 2008
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
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.
Expansion Tank
Minimum 3/4 “ Cold
Water Supply Line
Minimum 3/4 “ Hot
Water Supply Line
Building Supply
Gas SupplyLine
Tankless
Water Heater
Important:
Install return line to the hot
supply line as close as possible
to the Tankless water heater
Gas or Electric
Tank Water
Heater
19
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
Equipment List QTY
Tankless 1
Water Heater