American Water Heater ATI-705A-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-3-D
Domestic Hot Water - Optional Freeze Protection
3 Outdoor Tankless Water Heaters
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.
Hot Water
Supply Line
S
S
Sub 2
Sub 1Primary
Vacuum
Breaker
NOTE:
outside building structure. These are indicated
by being above the dashed line.
line should be located inside the building
structure.
The vacuum breaker line should be located inside
the building structure.
NOTE:
enclosure or recess box and packed with insulation
for additional protection.
Outdoor
Tankless
Water Heater
Outdoor
Tankless
Water Heater
Cold Water Supply Line
Gas Supply Line
Outdoor
Tankless
Water Heater
IMPORTANT!
With electrical power supplied to a
Tankles water heater, it will not
freeze in enviornments as cold as
-30ºF, when protected from direct
wind exposure.
In the event of a power failure at
temperatures below freezing, the
water heater should be drained of
all water to prevent freezing
damage.
The unit may be drained manually
or through the installation of the
Optional solenoid valves as shown.
The electrical connections for the
two solenoid valves should be tied
to the 120 V power terminals
provided on the PC Board of the
water heater.
When the electrical power to the
water heater fails, the cold water
supply solenoid valve closes,
heater, and the drain down
solenoid valve opens, allowing the
water heater and associated piping
to drain. Ensure that you run the
drain for the solenoids per local
codes.
Route drain
per local codes
17
Tankless
Equipment List QTY
Tankless Outdoor 3
Water Heaters
Electronic Connection *
* Refer to Tankless Accessories
and Model Applicability for
electronic connection details.
Normally Closed Solenoid Valve
(Full Size of Cold Water Supply Line)
1/4 “ Minimum
Normally Open
Solenoid Valve