A.O. Smith DIRECT VENTED GAS MODELS Installation And Operating Manual page 26

Low Vent installation
9
1
B
C
Figure 28
DIM. 4038
A
B
C
63.63"
(RECOMMENDED)
C
60.75
(MINIMUM)
D
NOTE: Dimension "C" is the height above to fl oor to the center of the
termination hole through the exterior wall.
Minimum Vent installation
3
9"
C
Figure 29
26
1 5
6
A
8
7
ABOVE
ANTICIPATED
SNOW
LEVEL OR
12" ABOVE
GRADE
5040 5047
80" MAX.
9" MIN.
73.00" 74.00"
69.50 70.50
14.25" MIN.
4
ABOVE
ANTICIPATED
D
SNOW
LEVEL OR
12" ABOVE
GRADE
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1
17"
MIN.
1
72"
MAX.
Figure 30
NOTES: (applies to Figure 28 thru Figure 30)
1. In any installation the total of dimension "A" plus
dimension "B" must not exceed 89" .
2. This heater can be installed with 0" clearance to a wall.
3. Minimum vent pipe clearance to combustibles is 1"
(see Figure 21).
4. Minimum distance from center of heater to wall is
14.25" .
5. Dimension "A" includes wall thickness.
6. Hole diameter in wall is 7" .
7. Venting must slope up away from the heater a
minimum of 0.25" per foot of length to prevent
condensation from collecting and to provide
suffi cient draft.
8. Distance above horizontal at full extension is 2" .
9. Use support stays to hold the venting to avoid sags
or valleys.
High Vent installation
12" MIN.
5
BELOW
SOFFIT
6
2