American Water Heater GTS-505-NI Benutzerhandbuch
Drawing Number:
Drawing Date:
Pres
s
ure R
e
lief
Valv
e
3/
4"
Ball
Valv
e
3/
4"
U
n
ion
C
h
ec
k Valv
e
Ke
y
S
Pres
s
ure R
egulat
or
C
irc
ulat
ing Pum
p
Solenoid Valv
e
Boiler D
rain Valv
e
WH-2-R
Domestic Hot W
ater - Circulation Systems
2 Tankless W
ater Heaters
Optional Piping Inst
allation
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
of
ficials before installation.
Ga
s
S
u
p
p
ly
L
in
e
Tankless
Wa
te
rH
ea
te
r
Pr
im
ar
y
Tankless
Wat
er
H
ea
te
r
Su
b
1
(Op
ti
o
n
a
l)
2-
10
G
a
ll
on
S
tor
age
T
ank
(T
o
e
li
m
inat
e
co
ld
w
a
te
r
s
a
nd
w
ic
h
e
ec
t
caus
e
d
b
y
fr
e
q
u
e
n
t
O
n
/O
operat
ion)
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
22
For this application:
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 Sizing for
Circulation
.
Pump to be of bronze or stainless construc-
tion.
A
quastat C
onnec
tion
Tankless
Equipment List
QTY
Tankless 2
W
a
ter Heaters
Electronic Connection *
* Refer to Tankless Accessories
and Model
Applicability for
electronic connection details.