A.O. Smith XDVS - Manual (Page 16)

16
FIGURE 70
19. Now the 6” vent extension pipes can be expanded to
connect at the vent elbow.
FIGURE 71
20. Pull the vent collar from the elbow to be against the wall
and secure it using the screws provided.
FIGURE 72
21. Lock the 6” vent extension to the vent elbow by using two
screws provided, placing them 180
° apart.
OPTIONAL VERTICAL AND
HORIZONTAL VENT KIT #900124-8
INSTALLATION #4
* Each part is stamped with a part number.
FIGURE 73
The opening through the wall should be cut at this time. If the
opening has not been cut, refer back to that section.
1. First it must be determined how far the vertical (3” dia.)
telescoping flue sections are set and locked together
using the two screws supplied as shown below.
FIGURE 74
Use the simple equation below, chart and drawing to find the
length of expansion of the telescoping flue sections. Because
of manufacturing tolerances, place the telescoping extension
on the water heater and adjust the height (“X” Dimension) and
mark the point. Once the length has been determined, lock the
two sections together by drilling two holes (180
° apart) in the
pipe and securing with the screws supplied.
EQUATION: C - A - 10” = X
* See models and rating plate attached to the water heater for
specific model number and other detailed information.
FIGURE 75
2. Set the vertical (3” dia.) telescoping flue section in place
on the flue collar. Using a #22 drill bit, drill two holes (180°
apart) and screw the vertical assembly to the flue collar.
FIGURE 76
3. Slide the 6” vent telescoping section apart to reveal the
beads. Using the caulking supplied, fill the beads.
*GALLON *BTU’s in 1000’s
CAPACITY NATURAL A
40 36/36 48-3/4
50 38/38 57-1/2
40 40/44 48-3/4
50 48/44 61
75 55 NAT. 63