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Optional Vertical Vent Kit with Standard Horizontal
Vent Kit - Installation #2
Any Optional Vent Kit
*Each part is stamped with a part number.
The opening through the wall should be cut at this time. If this has not been
done, refer to “Cutting The Opening Through The Outside Wall,” on page 11.
1. First it must be determined how far the vertical 3” (76 mm) diameter
telescoping flue sections are set and locked together using the two
screws supplied.
FIGURE 31 .
Use chart #3, drawing and simple equation below, 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.
FIGURE 32.
CHART #3
*GAL CAP. *BTU’s in 1000’s - NAT./L.P. A
40 36/36 48 3/4” 124 cm
50 38/38 57 1/2” 146 cm
40 40/40 48 3/4” 124 cm
50 48/44 61” 155 cm
75 55 NAT. 63” 160 cm
*Check the model and rating plate attached to the water heater for
specific model number and other detailed information.
2. Set the vertical 3” (76 mm) diameter telescoping flue section in place
on the flue collar. Using a # 22 drill bit, drill two holes (180° apart) and
secure the vertical assembly to the flue collar.
FIGURE 33.
3. Slide the 6” (152 mm) vent telescoping section apart to reveal the
beads. Using the caulking supplied, fill the beads.
FIGURE 34.
4. Apply an ample amount of sealant around the oval flare of the jacket.
FIGURE 35.
5. Place the 6” (152 mm) vent section over the 3” (76 mm) flue section.
Subtract 3/4” (19 mm) from the predetermined “X” dimension. This
determines the length of the 6” (152 mm) vent extension. Slide the 6”
(152 mm) vent extension apart to this dimension and secure with the
two screws supplied.
FIGURE 36.
6. Form the round end of the 6” (152 mm) vent extension to the top of the
jacket and secure with four sheet metal screws.
FIGURE 37.