A.O. Smith 186965-001, 505 Series 100 Gas Supply Hot Water Supply Line Cold Water Supply Line

On-Demand
Equipment List	QTY
On-Demand	6
Water Heaters

Electronic Connection *

* Refer to On-Demand Accessories and Model Applicability for electronic connection details.

On-

On-

On-

On-

On-

On-

Demand

Demand

Demand

Demand

Demand

Demand

Water

Water

Water

Water

Water

Water

Heater

Heater

Heater

Heater

Heater

Heater

Primary

Sub 1

Sub 2

Primary

Sub 1

Sub 2

Pressure Regulator

Set to 5 PSI Below

Street Pressure

Gas Supply

Hot Water Supply Line

Cold Water Supply Line

Domestic Hot Water - Standard Installation

6 On-Demand Water Heaters

Preferred Piping Installation

Key

3/4" Ball Valve

3/4" Union

Check Valve

Pressure Relief Valve

Pressure Regulator

Circulating Pump

S

Boiler Drain Valve

Solenoid Valve Mixing Valve

NOTE: This drawing is not intended to describe a complete system and is not a replacement for a pro- fessional engineering drawing. It is intended only as a guide and does not imply compliance with local building code requirements. Confer with local building officials before installation. The Contractor or engineer is to determine the necessary components and configuration of the particular system to be in- stalled. It is the responsibility of the engineer or contractor to ensure that the installation is in accordance with all local building codes.

Drawing Date:

September 07, 2008

Drawing Number:

H-6

19