18
Primary Piping
8
9
C
o
ld
W
a
te
r
F
ill
N
o
te
3
9
9
9
9
9
3
1
2
5
3
3
4
4
6
7
2
1
4
1
0
1
0
9
9
1
1
N
o
te
2
Fig. 7: Primary Piping - Zoning with Zone Valves
1
.
M
o
d
u
la
ti
n
g
D
el
ta
2
.
P
re
ss
u
re
R
el
ie
f
V
al
v
e
3
.
A
u
to
m
at
ic
A
ir
V
en
t
4
.
D
ra
in
/P
u
rg
e
V
al
v
e
5
.
C
ir
cu
la
to
r
6
.
A
ir
S
ep
ar
at
o
r
7
.
E
x
p
an
si
o
n
T
an
k
-D
ia
p
h
ra
g
m
8
.
A
u
to
m
at
ic
F
il
l
V
al
v
e
9
.
Is
o
la
ti
o
n
V
al
v
e
1
0
.Z
o
n
e
V
al
v
e
1
1
.
B
y
p
as
s
V
al
v
e
1
2
.F
lo
w
C
h
ec
k
V
al
v
e
N
ot
es
:
1
.
In
st
a
ll
a
m
in
im
u
m
o
f
1
2
st
ra
ig
h
t
p
ip
e
d
ia
m
e
te
rs
u
p
st
re
am
o
f
al
l
ci
rc
u
la
to
rs
.
2
.
A
d
ju
st
b
y
p
as
s
fo
r
a
m
in
i-
m
u
m
o
f
3
g
p
m
u
n
d
er
an
y
o
p
er
at
in
g
co
n
d
it
io
n
.
3
.
V
er
if
y
p
ri
m
ar
y
ci
rc
u
la
to
r
is
p
ro
p
er
ly
si
ze
d
to
o
v
er
co
m
e
th
e
sy
st
em
p
re
ss
u
re
d
ro
p
an
d
p
ro
v
id
e
a
d
e
q
u
a
te
fl
o
w
th
ro
u
g
h
th
e
ap
p
li
an
ce
.
