A.O. Smith ATX-199 Instruction Manual page 29

• NOTE:
(vent) pipe.
• NOTE:
8. Concentric Termination Installation (page
29).
CONCENTRIC TERMINATION INSTALLATION
Refer to Figure 31 Figure 32,
INTAKE AIR CONNECTION
Y FITTING
VENT CONNECTION
VENT PIPE MAY BE SHORTENED
MINIMUM ALLOWABLE LENGTH 25 INCHES (64 cm)
INTAKE AIR PIPE MAY BE SHORTENED
MINIMUM ALLOWABLE LENGTH 12 INCHES (30 cm)
INTAKE AIR PIPE
Y FITTING ASSEMBLY
VENT PIPE ASSEMBLY
Figure 31. Concentric Termination Kit
1.
2.
3.
4.
5.
6.
Figure 33 for these
INTAKE AIR PIPE
VENT PIPE
VENT CAP
VENT CAP
7.
Table 7 (page 21).
8.
9. Return to Direct Vent Installations (page 22) to
COMBUSTION
AIR
ROOF FLASHING
(field supplied)
VENT
PIPE
Figure 32. Concentric Termination - Vertical Installation
INTAKE AIR PIPE
VENT PIPE
NOTE: SECURING STRAP MUST BE
FIELD INSTALLED TO PREVENT
MOVEMENT OF TERMINATION KIT
IN SIDEWALL.
Figure 33. Concentric Termination - Side-Wall Installation
29
VENT MAINTAIN 12" (30 cm)
18" (45 cm) FOR CANADA
MINIMUM CLEARANCE
ABOVE HIGHEST ANTICIPATED
SNOW LEVEL. MAXIMUM OF
24" (60 cm) ABOVE ROOF.
STRAP
(field supplied)
NOTE: SECURING STRAP
MUST BE FIELD INSTALLED
TO PREVENT MOVEMENT
OF TERMINATION KIT
INTAKE
AIR PIPE
COMBUSTION
STRAP
(field supplied)
1 INCH
MAXIMUM
AIR
VENT