American Water Heater ATI-705-P Benutzerhandbuch

Drawing Number:

Drawing Date:

Pres

s

u

re R

e

lief

 Valv

e

3/

4"

 Ball 

Valv

e

3/

4"

 U

n

ion

Ch

e

c

k V

a

lve

Ke

y

S

Pres

s

u

re R

egulat

or

C

irc

ulat

ing Pum

p

Solenoid Valv

e

Boiler D

rain Valv

e

WH-1-R

Domestic Hot W

ater - C

irculation Systems

1 Tankless W

ater Heater

Optional Piping Inst

allation

June 11, 2007

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 

of

ficials before installation.

G

a

s

S

u

p

pl

y

(O

p

ti

o

n

a

l)

2-

6

G

al

lo

n

St

o

ra

g

e

T

a

n

k

(T

o

elim

ina

te

co

ld

w

a

te

r

sandw

ic

h

e

ec

t

caus

e

d

b

y

fr

e

quen

t

On/

O

opera

tion)

Expansion T

ank

M

inimum 3/4 

“ C

old 

W

a

ter Supply Line

M

inimum 3/4 

“ Hot 

W

a

ter Supply Line

Building Outlets

20

Pump should be controlled by an 

Aquastat, 

T

imer or Combination 

Aquastat and 

T

imer

.

Pump to be sized to maintain circulation 

loop temperature.

A

 minimum of 3 GPM flow is recommended 

for the circulation system.

The pump should be sized to overcome the 

pressure loss through the Tankless water 

heater

, optional storage tank, and supply 

and return plumbing in the circulation loop.

Reference the section 

.

Pump to be of bronze or stainless construc-

tion.

A

quastat C

onnec

tion

Tankless

Equipment List 

QTY

Tankless                          1

W

a

ter Heater