Crown Boiler 24-12 用户手册

i. From the “Section Arrangement” chart, select

the next section according to the “Identiﬁcation

Code” at the top of the chart. See Figure 8. Use

a wire brush to clean the groove in the face of

the next section. Then, using a cartridge of RTV

6500 or RTV 736 sealant in a caulking gun, ﬁll

the groove in this section with silastic sealant.

Touch-up any missed spots before draw-up.

Touch-up after draw-up has no value.

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 section 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).

NOTICE

The sections must be assembled according

to the arrangement shown to ensure proper

operation, proper assembly of canopy,

jacket and alignment of piping and tankless

heaters with jacket knockouts. Start with

the back section and work towards the

front.

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.

BOILER SECTION IDENTIFICATION CODE

F = FRONT SECTION WITH 4” SUPPLY TAPPING C = CENTER SECTION

B = BACK SECTION WITH 4” SUPPLY TAPPING CX = CENTER SECTION WITH 4” TOP SUPPLY TAPPING

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

Figure 8: Series 24 Section Arrangement

m. DRAW UP SECTION SLOWLY AND

EVENLY using an alternating pattern starting

with the upper right lug and proceeding to the

lower left , lower right and ﬁnishing with upper

left lug.