Smith SERIES 28RTS/HE Installation & Operating Instructions Manual page 10

SERIES 28RTS/HE BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Page 10
5. Insert the large port connector with its steel inner
ring into the upper port.
6. Insert the two round port connectors into the lower
ports with steel inner ring.
NOTE: Apply the spray adhesive supplied with the
boiler to the port recess to hold the port connector
in place if necessary.
7. Select the correct intermediate section and carefully
move it into place against the back section, Figure
4.
NOTE: A putty knife or similar tool can be used to
hold the port connectors in place while the
intermediate section is positioned. It must be
removed before the sections make contact or the
port connector will be damaged resulting in a leak!
8. Inser t the four draw rods through the casting
bosses. Thread nuts onto one end of the rods.
Place washers on the other end of the rods before
threading nuts onto them see Figure 4. Snug the
nuts fi nger tight. Use a spirit level to ensure that the
fi rst two sections are plumb and properly aligned,
Figure 6. Check the rope to insure that it's properly
positioned. Once the sections are plumb and the
rope and port connectors are properly positioned
follow the torque sequence shown in Table 4.
Use anti-seize on draw rod and washer, coating thread
and washer on one end only. Torque the draw rods from
the end with anti-seize & washer. Follow the steps as
described below. Do not completely tighten one side;
gradually work each side using an alternating pattern until
the correct torque is reached.
Figure 6 - Section Alignment
Table 4 - Section Torque Sequence
Step Rod Position
1 Upper Right
2 Lower Left
3 Lower Right
4 Upper Left
5 Upper Right
6 Lower Left
7 Lower Right
8 Upper Right
9 Lower Left
10 Lower Right
11 Upper Left
12 Upper Right
13 Lower Left
14 Lower Right
15 Upper Right
16 Upper Left
NOTE: With these initial torques the sections may
not be metal to metal, which is acceptable. If any of
the ports leak during the hydrostatic test the torque
can be increased to 200 ft lbs, 271 Nm on the upper
right rod. The torque on the lower left and right rods
can be increased to 150 ft lbs, 203 Nm. Once the
sections are metal to metal additional torque will not
improve the seal.
RTS Support Bracket Location
The RTS SUPPORT BRACKET(S) MUST BE INSTALLED
DURING BOILER ASSEMBLY in the locations shown
in Table 3.
Insert the support bracket through the upper port
opening, rotate it sideways and hook one ear over the
center of the stay, then the other, Figure 7.
Figure 7 - RTS Support Bracket Installation
Torque
ft lbs Nm
25 34
25 34
25 34
10 14
50 68
50 68
50 68
75 102
75 102
75 102
30 42
125 169
125 169
125 169
125 169
40 54