Manual 2100-365M
Page
24 of 74
8. Refer to Table 6 for Gas Pipe Sizes for natural gas.
If more than one appliance is supplied from a single
line size, capacity must equal or exceed the
combined input to all appliances, and the branch
lines feeding the individual appliances properly
sized for each input.
18. GAS SUPPLY AND PIPING
GENERAL RECOMMENDATIONS
1. Be sure the gas line complies with the local codes
and ordinances, or in their absence with the National
Fuel Gas Code, ANSI Z223.1, or Natural Gas
Installation Code, CAN/CGA B149.1, or Propane
Installation Code B149.2, latest edition.
2. A sediment trap or drip leg must be installed in the
supply line to the furnace.
3. A ground joint union shall be installed in the gas line
adjacent to and upstream from the gas valve and
downstream from the manual shut off valve.
4. An 1/8" NPT plugged tapping accessible for test
gauge connection shall be installed immediately
upstream of the gas supply connection to the furnace
for the purpose of determining the supply gas
pressure. This can be omitted if local codes permit
use of plugged tapping in gas valve inlet.
5. Install listed manual shut off valve in the supply gas
line external to and immediately upstream of the
furnace. See Figure 12.
6. Use steel or wrought iron pipe and fittings.
7.
DO NOT
thread pipe too far. Valve distortion or
malfunction may result from excess pipe within the
control. Use pipe joint compound resistant to the
action of liquefied petroleum gases on male threads
only.
DO NOT
use Teflon tape. See Table 5 and
Figure 13.
TABLE 5
LENGTH OF STANDARD
PIPE THREADS (INCHES)
e
z
i
S
e
p
i
P
h
t
g
n
e
L
e
v
i
t
c
e
f
f
E
d
a
e
r
h
T
f
o
h
t
g
n
e
L
l
l
a
r
e
v
O
d
a
e
r
h
T
f
o
8
/
3
2
/
1
6
1
/
9
4
/
3
6
1
/
9
-
-
2
/
1
6
1
/
3
1
1
6
1
/
9
1
f
o
h
t
g
n
e
L
t
e
e
F
-
e
p
i
P
e
z
i
S
e
p
i
P
t
u
p
n
I
r
u
o
H
r
e
p
U
T
B
-
y
t
i
c
a
p
a
C
e
p
i
P
"
2
/
1
"
4
/
3
"
1
"
4
/
1
-
1
0
1
0
0
0
,
2
3
1
0
0
0
,
8
7
2
0
0
0
,
0
2
5
0
0
0
,
0
5
0
,
1
0
2
0
0
0
,
2
9
0
0
0
,
0
9
1
0
0
0
,
0
5
3
0
0
0
,
0
3
7
0
3
0
0
0
,
3
7
0
0
0
,
2
5
1
0
0
0
,
5
8
2
0
0
0
,
0
9
5
0
4
0
0
0
,
3
6
0
0
0
,
0
3
1
0
0
0
,
5
4
2
0
0
0
,
0
0
5
0
5
0
0
0
,
6
5
0
0
0
,
5
1
1
0
0
0
,
5
1
2
0
0
0
,
0
4
4
0
6
0
0
0
,
0
5
0
0
0
,
5
0
1
0
0
0
,
5
9
1
0
0
0
,
0
0
4
0
7
0
0
0
,
6
4
0
0
0
,
6
9
0
0
0
,
0
8
1
0
0
0
,
0
7
3
0
8
0
0
0
,
3
4
0
0
0
,
0
9
0
0
0
,
0
7
1
0
0
0
,
0
5
3
0
0
1
0
0
0
,
8
3
0
0
0
,
9
7
0
0
0
,
0
5
1
0
0
0
,
5
0
3
TABLE 6
GAS PIPE SIZES - NATURAL GAS
CHECKING THE GAS PIPING
Before turning gas under pressure into piping, all
openings from which gas can escape should be closed.
Immediately after turning on gas, the system should be
checked for leaks. This can be done by watching the 1/2
cubic foot test dial and allowing 4 minutes to show any
movement, and by soaping each pipe connection and
watching for bubbles. If a leak is found, make the
necessary repairs immediately and repeat the above test.
The furnace must be isolated from the gas supply piping
system by closing the manual shut off valve on the
combination gas control valve during pressure testing of
the gas supply piping system at pressures up to 1/2
PSIG. The furnace and its individual shut off valve must
be disconnected from supply piping and supply piping
capped during any pressure testing of supply piping
system at test pressures in excess of 1/2 PSIG.
Defective pipes or fittings should be replaced and not
repaired. Never use a flame or fire in any form to locate
gas leaks; use a soap solution.
After the piping and meter have been checked
completely, purge the system of air.
DO NOT
bleed air
inside the furnace.
Be sure to check and relight all the
gas pilots on other appliances that may have been
extinguished because of interrupted gas supply
.
FIGURE 13
PROPER PIPING PRACTICE
MIS-897
Summary of Contents for WG242
Page 13: ...Manual 2100 365M Page 13 of 74 FIGURE 2A MOUNTING INSTRUCTIONS FOR WG42 WG48 AND WG60...
Page 16: ...Manual 2100 365M Page 16 of 74 FIGURE 6 COMMON WALL MOUNTING INSTALLATIONS...
Page 22: ...Manual 2100 365M Page 22 of 74 FIGURE 11 LOW VOLTAGE WIRING...
Page 23: ...Manual 2100 365M Page 23 of 74 FIGURE 12 GAS PIPE CONNECTION...
Page 50: ...Manual 2100 365M Page 50 of 74 WG242 A 230 208 60 1...
Page 51: ...Manual 2100 365M Page 51 of 74 WG242 A WG362 A 230 208 60 1...
Page 52: ...Manual 2100 365M Page 52 of 74 WG242 B 230 208 60 3...
Page 53: ...Manual 2100 365M Page 53 of 74 WG242 B WG362 B 230 208 60 3...
Page 54: ...Manual 2100 365M Page 54 of 74 WG242 C 460 60 3...
Page 55: ...Manual 2100 365M Page 55 of 74 WG242 C WG362C 460 60 3...
Page 56: ...Manual 2100 365M Page 56 of 74 WG302 A 230 208 60 1...
Page 57: ...Manual 2100 365M Page 57 of 74 WG302 A WG482 A WG602 A 230 208 60 1...
Page 58: ...Manual 2100 365M Page 58 of 74 WG302 B 230 208 60 3...
Page 59: ...Manual 2100 365M Page 59 of 74 WG302 B WG482 B WG602 B 230 208 60 3...
Page 60: ...Manual 2100 365M Page 60 of 74 WG302 C 460 60 3...
Page 61: ...Manual 2100 365M Page 61 of 74 WG302 C 460 60 3...
Page 62: ...Manual 2100 365M Page 62 of 74 WG362 A 230 208 60 1...
Page 63: ...Manual 2100 365M Page 63 of 74 WG362 B 230 208 60 3...
Page 64: ...Manual 2100 365M Page 64 of 74 WG362 C 460 60 3...
Page 65: ...Manual 2100 365M Page 65 of 74 WG423 A 230 208 60 1...
Page 66: ...Manual 2100 365M Page 66 of 74 WG423 A 230 208 60 1...
Page 67: ...Manual 2100 365M Page 67 of 74 WG423 B 230 208 60 3...
Page 68: ...Manual 2100 365M Page 68 of 74 WG423 B 230 208 60 3...
Page 69: ...Manual 2100 365M Page 69 of 74 WG423 C 460 60 3...
Page 70: ...Manual 2100 365M Page 70 of 74 WG423 C 460 60 3...
Page 71: ...Manual 2100 365M Page 71 of 74 WG482 A WG602 A 230 208 60 1...
Page 72: ...Manual 2100 365M Page 72 of 74 WG482 B WG602 B 230 208 60 3...
Page 73: ...Manual 2100 365M Page 73 of 74 WG482 C WG602 C 460 60 3...
Page 74: ...Manual 2100 365M Page 74 of 74 WG482C WG602 C 460 60 3...
