Burnham V11H Series Installation, Operating And Service Instructions page 20

Commercial cast iron boiler
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To avoid damage to the draw-up rod threads while
drawing up sections, apply oil or other lubricant to
tie rod threads while assembling sections to prevent
stripping of threads on rod and to make assembling
easier.
Pour éviter d'endommager les filetages de la tige de
traction lors de l'étirage des sections, appliquez de
l'huile ou un autre lubrifiant sur les filetages de la tige
de traction lors de l'assemblage des sections pour
éviter le dénudage des filetages sur la tige et pour
faciliter l'assemblage.
l. DRAW UP SECTION SLOWLY AND EVENLY
using an alternating pattern starting with the
upper right lug (closest to the 7" port) and
proceeding to the lower left, lower right and
finishing with upper left lug. When you start,
grind surfaces between adjoining sections
should be approximately 3/8" apart. Use three
(3) or four (4) passes at tightening the four (4)
draw-up rods a little at a time so that sections
are pulled up evenly. During the last pass,
pay close attention to the silastic sealant as
it squeezes when the sections come in close
contact. The silastic sealant should continue
to squeeze out wafer thin until the sections are
connected metal to metal. If the silastic has
stopped squeezing out from the connection and
the sections still do not appear to be drawn metal
to metal, use a feeler gauge to measure any gaps
at the locations identified in Figure 9. (Unless
Figure 10: Jacket Intermediate Panel
Mounting Brackets
(Required on Boiler Models V1113H thru V1123H)
20
specified otherwise, gaps should be measured at
these locations on both sides of the sections). A
maximum gap of .025" is acceptable. Measure
gaps at the outer edge of the connection only,
making sure not to puncture the gasket created
by the silastic and rope.
When tightening the draw-up nuts, DO NOT EXCEED
165 FT-LB OF TORQUE. If the maximum torque limit has
been reached and a gap greater than .025" still exists
between the sections, consult the regional office.
Lors du serrage des écrous de serrage, NE PAS
DÉPASSER 165 PI-LB DE COUPLE. Si la limite de
couple maximum a été atteinte et qu'un écart supérieur
à 0,025 " existe toujours entre les sections, consultez
le bureau régional.
KEEP NIPPLES ALIGNED WITH NIPPLE
PORTS. If necessary, tap edge of nipples lightly
with a blunt tool or rod to keep nipples from
cocking while sections are being drawn-up.
Figure 11: Bracket Placement
Figure 12: Bracket Attachment to Center Section

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