Burnham FM01FD00B manual

WARNING

This is a forced draft fired boiler and sealant must be applied where specified for proper and safe performance. Burnham Commercial has approved section joint sealants (silastics) manufactured by Dow-Corning under the product number RTV 736, and Sil-Bond under the product number RTV 6500.

WARNING

Sections must be drawn-up tight immediately after properly applying sealant for best results. Although sections may be joined within two

(2)hours of applying sealant, humidity and temperature affect cure time. If a “thick skin” has been formed on the sealant bead, remove and re- apply sealant.

Step k. Position the next adjoining section to be assembled, so that the side with the sealing tongue around the combustion chamber and perimeter is facing the mating side of the rear section. Sections must always be assembled so that the rope groove on one section mates

to the sealing tongue on the next section in the assembly.

Step l. Clean and lubricate the nipple ports on the mating (tongue) side of the adjoining section. Place the nipple ports of the adjoining section onto the nipples previously installed in the rear section. To facilitate assembly, it is advisable to enter the upper nipple first in its port. Then enter the lower nipple in it’s respective port. If necessary, place a lifting bar (crowbar) under the center of the section and lift the nipple port onto the upper nipple. Drive section in place with a heavy block of wood, striking blows as squarely as possible over nipple ports.

Step m. From Manual Draw-up Kit, locate and assemble two (2) sets that include a ¾” x 23” lg. threaded rod, 6½” dia. pressure plate, ¾” flat washer and ¾” hex nut as shown in Figure

5.Insert one assembly through each of the 3” and 4” NPT bosses on rear section until pressure plate is tight against the boss. Locate and place the 8¾” dia. pressure plate on the opposite end of threaded rod in upper nipple port. Place remaining 6½” dia. pressure plate on rod protruding through lower nipple port. Install a ¾” washer, ¾” coupling spacer, ¾” washer and ¾” hex nut on each rod. Center upper pressure plates on nipple port and boss while tightening nut until tension holds assembly in place. Repeat for lower assembly. Refer to Figure 5 to verify proper arrangement.

Step n. DRAW UP SECTION SLOWLY AND EVENLY. When you start, machined surfaces between adjoining sections should be approximately 3/8” to 1/2” apart. The 7” nipple will pull harder than the 3” nipple. If two (2) people are pulling simultaneously, stop periodically to verify that gaps between adjoining sections are equal at both nipple ports. If not, pull the nipple with the larger gap until equal before proceeding. Continue draw-up, paying close attention to the nipple lubricant as it squeezes when the sections come in close contact. The lubricant should continue to squeeze out until the sections are connected metal to metal at the designated inspection pads shown in Figure 8. If the sections still do not appear to be drawn metal to metal, use the feeler gauge provided to measure any gaps at the locations identified in Figure 8. (Unless specified otherwise, gaps should be only measured at these locations). A maximum gap of .025”.

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.

DO NOT DRAW UP SECTION WHEN NIPPLES ARE COCKED. If the torque required becomes excessive, periodically place a heavy block of wood over each nipple port and strike as squarely as possible with several blows to relieve tension on the draw-up rods.

Step o. Remove Draw-up Rod Assemblies and set aside.

Step p. Prepare center section on block assembly to receive next casting, see Figure 5. Clean the rope grooves around the combustion chamber and perimeter of the section with a wire brush. Repeat Step ‘d’ through step ‘p’ with the following exceptions:

•During Step ‘d’ procedure, apply multi- purpose spray adhesive to combustion chamber rope groove as well as perimeter groove.

•During Step ‘e’ procedure, locate 86” length of red silicone coated fiberglass rope.

Starting at 9 o’clock position, push rope into groove and continue around combustion chamber until rope overlaps starting point. Mark joint, cut-off excess and seal joint per instructions.

•During Step ‘j’ procedure, apply sealant to the (6) flueway sealing grooves on the center section.

BE SURE TO APPLY THE SILICONE COATED FIBERGLASS ROPE AND SEALANT to the grooved joints between

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