Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,
Page 9
Clamping
Rings
Lock
Washers
Square
Nuts
Bolts
1) Connection Hardware
3) Step 2
Combustion
products flow
direction
Suspended Tube
Section
Tube Section to be
added (suspend at
opposite end)
2) Step 1
4) Connected Tubes
Tighten
bolts
securely.
IMPORTANT: If tubes do not slide together easily, follow
Installation Tip below.
Installing "L" Heat Exchanger Tubes - "L" tubes do not require a suspension point. When the configuration requires an "L" tube, slide the expanded
end over the previous tube and make the connection.
Suspending the Tail Pipe - Attach an "S" hook to the hanger bracket and suspend the tube from the last hanging chain. Slide the expanded end over
the previous tube and make the connection.
Connecting the Tubes - Using the hardware in the bag packaged with each tube, follow the steps in Figure 11 to connect the tubes.
Be certain inner tube mates to
bottom of expansion in outer tube.
Figure 11 - Steps for Connecting Tubes
Installation Tip: If tubes are difficult to slide tubes together, use the two 4-1/2" long bolts from the burner/control box
parts bag to draw the tubes together. Follow illustrated Step 2 (Figure 11, page 9), using the 4-1/2" bolts. Alternate
tightening the upper and lower bolts. When the tubes are in position, remove one of the long bolts, replace with a
connecting bolt, and secure. Repeat, replacing the other bolt. Re-use the 4-1/2" bolts as needed.
Figure 12B - Interlock Sections as Turbulator Strip is
Installed
Figure 12A - Turbulator Strip Section
3) Install the Turbulator Strip -- Locate turbulator strip sections.
Instructions: Install a turbulator strip in a tube only after
that tube has been suspended and connected to the previous
tube. Refer to Figures 12A and 12B. Install the turbulator
strip by sliding a section into the tube, connecting the next
section, and sliding the connected sections on into the tube(s).
Follow the selected configuration drawing in the configura-
tion booklet and the instructions in the chart on page 11.
Slide Together
Turbulators
Turbulators interlocked ready
for insertion into heat exchanger
tubes.
System Length 20 30 40 50 60 70
Tube Package(s) E F E G F G E G G F G G
Full Size Turbulator
Section, 37-1/8" long
333232322322
Small Turbulator
Section, 26" long
101000100000
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