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4. All above ground gas piping upstream from manual
gas valve must be electrically continuous and
bonded to a grounding electrode. Do not use gas
piping as a grounding electrode. Refer to the
National Electrical Code, ANSI/NFPA 70 and/or
CSA C22.1 Electrical Code.
C.
Pressure Test. The boiler and its gas connection must
be leak tested before placing boiler in operation.
1. Protect boiler gas valve. For all testing over ½ psig,
boiler an its individual shut-off valve must be
disconnected from gas supply piping. For testing at
Table 3: Maximum Capacity of Schedule 40 Pipe in CFH for Gas Pressures of 0. psig or Less
L
e
n
g
h t
F [
e
e
] t
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
1
0
0
Table 4: Fitting Equivalent Lengths
N
F
t t i
n i
g
½
4
5
°
E
l l
0
7 .
9
0
°
E
l l
1
6 .
T
e
e
(
A
s
3
1 .
E
b l
o
w
)
U
S
A
b
i o
e l
s r
b
u
t l i
o f
s
p
e
i c
l a
y l
o
r
f i
c i
e
d
o t
N
t a
o i
n
l a
F
u
l e
G
a
s
C
o
r
f i
c i
e
s
z i
n i
g
s i
n i
d
t
i h
d r
d
g i
t i
n i
h t
e
m
o
24
0
3 .
n i
c
h
. w
. c
P
e r
½
¾
1
3
2
2
7
8
9
2
1
9
0
7
3
1
5
2
6
3
1
3
0
5
6
1
1
5
5
0
1
0
5
4
6
9
6
4
3
9
0
4
0
8
4
3
8
7
9
o
m
n i
l a
P
p i
e
S
z i
e
¾
1
1
1
2 .
2
1 .
2
6 .
4
1 .
5
2 .
r
n i
s
a t
l l
t a
o i
n
t a
a
i t l
u t
e r
d
u
c
e
g
a
s
n i
p
t u
a r
o
d
, e
N
F
P
A
5
4
A /
N
I S
c i
a
e t
d
o
n
h t
e
r
t a
n i
g
d
l e
n
u
m
b
r e
s
u
f f
x i
o
_
N I
_
_
_
-
_
_
2
_
N I
_
_
_
-
_
_
4
_
N I
_
_
_
-
_
_
5
½ psig or less, isolate boiler from gas supply piping
by closing boiler's individual manual shut-off valve.
2. Using soap solution, or similar non-combustible
solution, electronic leak detector or other approved
method. Check that boiler gas piping valves, and all
other components are leak free. Eliminate any
leaks.
D
o
n
t o
o
r
o
h t
s
s
u
e r
D
o r
p
1
1
¼
5
2
0
1
0 ,
5
0
3
5
0
7
3
0
2
8
5
5
9
0
2
4
5
5
0
0
2
1
5
4
4
0
1
9
5
4
0
0
1
8
0
3
7
0
1
7
0
3
5
0
1
6
0
3
2
0
1
5
0
3
0
5
Table 5: Specific Gravity Correction Factors
S
p
e
c
G
a r
i v
0
5 .
0
1
¼
0
5 .
5
1
6 .
0
6 .
0
3
5 .
0
6 .
5
6
9 .
0
7 .
0
0
7 .
5
0
8 .
0
N
O
T
C I
E
d
e
s
g
e r
t a
r e
h t
a
n
2
0 ,
e t
4
p
e
c r
e
t n
p
r e
1
0 ,
Z
2
2
. 3
, 1
S
e
t c
o i
n
8
1 .
2 .
a l
b
e
. l
H
g i
h
a
i t l
u t
d
e
n
h t
e
r
t a
n i
g
a l
b
e
: l
e l
s
s
h t
a
n
2
0
0
0
. t f
e
e l
2
0
0
0
o t
4
5
0
0
. t f
e
e l
v
2
0
0
0
o t
5
0
0
0
. t f
e
e l
v
D
A
N
G
E
u
s
e
m
a
c t
h
e
, s
c
a
n
d
r e
g i
n
t i
o i
n
s
o
u
c r
e
o t
0
5 .
n i
c
h
. w
. c
P
e r
½
¾
1
7
5
3
6
0
1
2
0
2
5
0
9
7
2
0
0
8
2
1
7
0
7
3
1
5
1
6
6
1
3
8
6
1
1
2
5
5
7
1
1
8
5
3
1
1
0
5
0
1
0
3
f i
c i
C
r o
e r
t c
o i
n
S
p
y t
F
a
t c
r o
G
1
1 .
0
1
0 .
4
1
0 .
0
0
9 .
6
0
9 .
3
0
9 .
0
0
8 .
7
0
0
e f
t e
a
b
o
v
e
s
e
a
e l
0
0
e f
t e
a
b
o
v
e
s
e
a
e l
a
n
d
A
p
p
e
n
d
x i
. F
C
a
b
o
l i
r e
m
o
d
e
s l
a
e r
d i
v
t a
o i
n
t a
o i
n
(
C
a
n
a
d
) a
t a
o i
n
(
U
S
A
)
R
e l
, s
o
p
e
n
f
a l
m
e
s
c
h
e
c
k
o f
r
e l
a
k
. s
s
s
u
e r
D
o r
p
1
1
¼
6
8
0
1
4 ,
0
0
4
6
5
9
5
0
3
7
5
7
7
0
3
2
0
6
6
0
2
8
5
5
8
0
2
6
0
5
3
0
2
4
0
4
9
0
2
2
0
4
6
0
2
0
5
4
3
0
1
9
5
4
0
0
e
c
f i
c i
C
r o
e r
t c
o i
n
a r
i v
y t
F
a
t c
r o
1
3 .
0
1
0 .
7
1
4 .
0
1
0 .
4
1
5 .
0
1
0 .
0
1
6 .
0
0
9 .
7
1
7 .
0
0
9 .
4
v
l e
h
a
v
e
b
e
e
n
v
l e
p
r e
h t
e
n
a
d
a i
n
b
o
l i
r e
' s
e
n
f i t
a i
b
e l
b
y
h t
e
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