Offset Vent Arrangement Condition 1; Offset Vent Arrangement Condition 2 - A.O. Smith 186589-004 Instruction Manual

FIGURE 23
Apply hi-temp red silicone (included) around the collar on air
manifold box. Pull corrugated vent tube all the way on to collar
and secure with one sheet metal screw (approx. 19mm (3/4
in.) up from edge of vent tube. Pull gear clamp past screw and
tighten.
FIGURE 24
Check the level or slope of the venting again, and adjust if
required.
SLOPE
FIGURE 25
OFFSET VENT ARRANGEMENT
CONDITION 1:
Where a straight vent arrangement is impossible, a horizontal
90 degree maximum bend can be made. Use the water heater
casing outer diameter as a template to form the corrugated
tube.
TOP VIEW
CONDITION 2:
Where fl oor joists impede venting, a rise or drop to complete the
vent termination is possible. All installations require 25mm (1 in.)
clearance to combustibles.
Note:
A. The maximum horizontal vent length of 2.03m (80 in.) minus
wall thickness should be considered when installing an offset
vent arrangement.
B. Do not combine condition 1 (Figure 26) with condition 2
(Figure 27) in the same installation.
C. The maximum allowable drop from vent center-line to vent
termination center-line (Figure 27) is 184mm (7.25 in.).
>1 in.
(25mm)
SEE
CHART
17
90° MAXIMUM
BEND
FIGURE 26
>1 in. (25mm)
7.25 in.
(184mm)
"H"
MAX
(254mm) (REF)
RECOMMENDED
MODELS
MINIMUM "H"
40 gal. 68 in. (1.72m)
50 gal. 76 in. (1.93m)
50 gal. Hi-INPUT 76 in. (1.93m)
75 gal. 76 in. (1.93m)
FIGURE 27
WALL 10 in.