Freestyle 80 - Gas Piping and Sizing; Natural Gas Piping Sizing; Propane Gas Piping Sizing

Part number 550-142-850/0716
16
FreeStyle
®
WALL MOUNT 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:
0IPESIZINGFORNATURALGAS
1. 3IZEGAS PIPINGFROMMETEROUTLETTOENTRANCEOF BOILERIN
accordance with Figure 18 and Figure 19.
2. 5SETOTALINPUTOFALLCONNECTEDAPPLIANCES$IVIDETOTALINPUT
IN"TUHBYTOOBTAINCUBICFEETPERHOUROFNATURALGAS
a. Pipe lengths in Figure 18AREEQUIVALENTLENGTHOFSTRAIGHT
pipe. Convert pipe fittings to equivalent lengths using
DATAFROMFigure 19.
b. Figure 18ISONLYFOR NATURALGASWITHSPECIlCGRAVITY
with a pressure drop through the gas piping as listed in
the table.
.ATURALGASSUPPLYPRESSURE
1. Pressure required at gas valve inlet pressure port:
a. -AXIMUMvMMWCWITHNOmOWLOCKUP
b. -INIMUMGASPRESSUREWITHGASmOWINGVERIFYDURING
boiler startup, while boiler is at high fire):
FreeStyle
®
80: 3.5” w.c.
FreeStyle
®
120: 3.5” w.c.
FreeStyle
®
155: 3.5” w.c.
Nominal gas pressure: 7.0” w.c.
2. )NSTALLLOCKUPGASPRESSUREREGULATORINSUPPLYLINEIF
INLETPRESSURECANEXCEEDvWCATANYTIME!DJUSTLOCKUP
REGULATORFORvWCMAXIMUM
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.
0IPESIZINGFORPROPANEGAS
1. Contact gas supplier to size pipes, tanks and 100% lockup
gas pressure regulator.
0ROPANESUPPLYPRESSURE
1. !DJUSTPROPANESUPPLYREGULATORPROVIDEDBYGASSUPPLIERFOR
13” w.c. maximum pressure.
2. Pressure required at gas valve inlet pressure port:
a. -AXIMUMvWCWITHNOmOWLOCKUP
b. -INIMUMGASPRESSUREWITHGASmOWINGVERIFYDURING
boiler startup, while boiler is at high fire):
FreeStyle
®
80: 3.5” w.c.
FreeStyle
®
120: 3.5” w.c.
FreeStyle
®
155: 3.5” w.c.
Nominal gas pressure: 11.0” w.c.
Figure 18 0IPECAPACITYFORSPECIlCGRAVITYNATURAL
GASPIPELENGTHISINEQUIVALENTFEET
Gas
PIPE
total
LENGTH
feet
#APACITY
#UBICFEETPERHOURNATURALGASSPECIlCGRAVITY
'ASPRESSUREvWCORLESS
0RESSUREDROPINCHESWC
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
Figure 19 %QUIVALENTLENGTHSOFSTRAIGHTPIPEFORTYPICAL
GASLINElTTINGS
0IPESIZE
INCHES
%QUIVALENTLENGTHFEET
%LBOW Tee
short
radius
long
radius
line
mOW
BRANCH
mOW
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