Burnham manual V9A Section Arrangement

NOTES: FOR BOILERS LESS TANKLESS HEATER, REPLACE THE "CT" SECTIONS WITH "C" SECTIONS.

Figure 8: V9A Section Arrangement

j.Clean and lubricate nipple ports on next section to be assembled and place on nipples previously installed in rear section. To facilitate assembly, it is advisable to enter the upper nipple first in its port. Then enter the lower nipples in their respective ports. If necessary, place a lifting bar (crowbar) under the center of the section and lift the nipple port onto the upper nipple.

k.Drive sections in place with a heavy block of wood, striking blows as squarely as possible over nipple port.

l.The large draw-up rod lugs with dual holes are cast in the four (4) corners of each casting.

STARTING WITH THE UPPER HOLES, install four (4) 5/8” x 9¾” long draw-up rods along with washers and nuts (see Figure 9).

CAUTION

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.

m. 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 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.

16