Part number 550-142-850/0115
16
FreeStyle
™
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
5 Gas piping — sizing gas lines
Boiler gas connection is ½” NPT. Size gas lines large
enough to provide gas to all connected appliances.
Natural Gas:
0IPESIZINGFORNATURALGAS
1.
3IZE GAS PIPING FROM METER OUTLET TO ENTRANCE OF BOILER IN
accordance with Figure 18 and Figure 19.
2.
5SETOTALINPUTOFALLCONNECTEDAPPLIANCES$IVIDETOTALINPUT
IN"TUHBYTOOBTAINCUBICFEETPERHOUROFNATURALGAS
a. Pipe lengths in Figure 18
AREEQUIVALENTLENGTHOFSTRAIGHT
pipe. Convert pipe fittings to equivalent lengths using
DATAFROM
Figure 19.
b. Figure
18
ISONLYFORNATURALGASWITHSPECIlCGRAVITY
with a pressure drop through the gas piping as listed in
the table.
.ATURALGASSUPPLYPRESSURE
1. Pressure required at gas valve inlet pressure port:
a.
-AXIMUMvMM WCWITHNOmOWLOCKUP
b.
-INIMUMGASPRESSUREWITHGASmOWINGVERIFYDURING
boiler startup, while boiler is at high fire):
FreeStyle
™
80: 3.5” w.c.
FreeStyle
™
120: 3.5” w.c.
Nominal gas pressure: 7.0” w.c.
2.
)NSTALLLOCKUPGASPRESSUREREGULATORINSUPPLYLINEIF
inlet pressure can exceed 13” w.c. at any time. Adjust lockup
REGULATORFORvWCMAXIMUM
Propane Gas:
9OU MUST FOLLOW THE INSTRUCTIONS BEGINNING ON
page 12, to operate the boiler on propane. Failure
to comply could result in severe personal injury,
death or substantial property damage.
0IPESIZINGFORPROPANEGAS
1. Contact gas supplier to size pipes, tanks and 100% lockup
gas pressure regulator.
0ROPANESUPPLYPRESSURE
1.
!DJUSTPROPANESUPPLYREGULATORPROVIDEDBYGASSUPPLIERFOR
13” w.c. maximum pressure.
2. Pressure required at gas valve inlet pressure port:
a.
-AXIMUMvWCWITHNOmOWLOCKUP
b.
-INIMUMGASPRESSUREWITHGASmOWINGVERIFYDURING
boiler startup, while boiler is at high fire):
FreeStyle
™
80: 3.5” w.c.
FreeStyle
™
120: 3.5” w.c.
Nominal gas pressure: 11.0” w.c.
Figure 18
0IPECAPACITYFORSPECIlCGRAVITYNATURAL
GASPIPELENGTHISINEQUIVALENTFEET
Gas
PIPE
total
LENGTH
feet
#APACITY
#UBICFEETPERHOURNATURALGASSPECIlCGRAVITY
'ASPRESSUREvWCORLESS
0RESSUREDROPINCHESWC
½”
¾”
1”
1¼”
1½”
2”
2½”
10
132
278
520
1050
1600
3050
4800
20
92
190
350
730
1100
2100
3300
30
73
152
285
590
890
1650
2700
40
NA
130
245
500
760
1450
2300
50
NA
115
215
440
670
1270
2000
75
NA
105
175
360
545
1020
1650
100
NA
96
150
305
460
870
1400
150
NA
90
120
250
380
710
1130
&IGURE
%QUIVALENTLENGTHSOFSTRAIGHTPIPEFORTYPICAL
GASLINElTTINGS
0IPESIZE
INCHES
%QUIVALENTLENGTHFEET
%LBOW
Tee
short
radius
long
radius
line
flow
BRANCH
flow
½
3.6
2.2
1.7
4.2
¾
4.4
2.3
2.4
5.3
1
5.2
2.7
3.2
6.6
1¼
6.6
3.2
4.6
8.7
1½
7.4
3.4
5.6
9.9
2
8.5
3.6
7.7
12.0
2½
9.3
4.0
9.3
13.0
