Bryant 246 - BOILER HEADER AND PIPING INSTALLATION; STEAM AND WATER TRIM CONTROLS

FAX No. 317 240 5662
F. 008/018
SEP/04/2008/THU 09:16 AM UTC TECH PUB
A65435
Figure 19
. Adjust draft hood dips and top cover supports on tie
rods so top covers line up with end panels and front
covers .are even across top and front Tighten nuts on
tie rods and screws holding top covers to top supports
so top covers are.held firmly in place. ,
'i' ■ - ‘i • ' ™ "i : fY'r i. } ■ &•[/£
BOILER HEADER
AND PIPING INSTALLATION.
Complete the boiler piping (water or steam lines),
paying particular attention to the following recom¬
mendations -for steam boilers., ’: Y vVj' '
1. R eturn must be piped to both ends of boiler.
Boiler Size Dimension A
•4 through 19*
4 inches;-"
2f through 29
• /6 indhes A
31 and 33 'YB- inches
^RELIEF VALVE 15 LBS PS!
2. Minimum steam header proportions should be as
shown in Figure 22,
3, Add skimmer tee as shown in Figure 22,
Note; Never install a shutoff or steam valve between
the pressure relief valve and tire boiler.
On low-pressure boilers, the ASME Code requires
that a pressure relief valve be installed. The valve
discharge capacity in pounds per hour must be at
least equal to the output of the boiler, The capacity of
the boiler in pounds of steam per hour can be deter¬
mined by dividing the boiler output in Btuh by 1000,
For power or process purposes, use the fpllowing for¬
mula;
input
equals pounds of steam per hour
1333
STEAM AND WATER TRIM CONTROLS
Steam Controls
The steam controls for boiler installation consist of
the following components. See Figures 23 and 25.
1. Low-water cutoff (mounted, externally) with blow-
off valve,.
2. High-pressure limit control.
3. Compound jpressurefvacuuro gauge. •
4. Water gauge glass set.
5. Siphon, '
6. 15-psig pressure relief valve.
*The 4, 5, & 6 section 246 may be piped with a
single riser if the croas-fiectional area of the
existing Steam supply .'system is not more than
the single :’4-inch riser area from .the boiler.
IF SIDE OUTLET RELIEF
VALVE IS USED, PIPE TO
WITHIN 6" OF-FLOOR
n!
; .p.
24
' ^
4^
^'SKIMMER
TAPPING
1 INCH
(Uf—
ZJ
BE
RETURN
PIPED TO
DOTH ENDS
OF BOILER ■
SIZED FOR DISTRIBUTION SYSTEM
TO DISTRIBUTION
SYSTEM
!—OPTIONAL
SKIMMER
W LOCATION
ySj 1 INCH
./TOTAL CROSS-
r SECTIONAL
AREA OF
RETURN LINES
SUGGESTED STEAM HEADER PIPING 246 BOILER
EQUALIZER MAY BE INSTALLED
AT EITHER END OF BOILER
AeS317
Figure 22
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