Multiple Concentric Vent Termination; Tee Termination (Sidewall & Roof) - A.O. Smith ProLine XE GPDNL-40 Series Installation And Operating Manual

MULTIPLE CONCENTRIC VENT TERMINATION

When two concentric vent kits are being installed, the vent
hood centers shall be either less than 9.5" apart or more
than 43.5" apart. Spacings between 9.5" and 43.5" are not
allowed due to the possibility of exhaust cross circulation
(see Figure 32).
When more than 2 kits are installed only 2 of them shall
be less than 9.5" apart. Never install 3 termination kits
together less than 9.5" apart (see Figure 33).
O R
9 .5 " M A X
4 3 .5 " M IN
Figure 32.
NOTE: IF A TERMINATION ELBOW IS
REQUIRED BY LOCAL CODES INSTALL
VENT SCREEN IN ELBOW INSTEAD OF
CONCENTRIC VENT EXHAUST.
9 .5 " M A X .
Figure 33.
TEE TERMINATION (SIDEWALL & ROOF)
A Tee fitting as the exhaust termination and a 90° fitting
as the air intake termination are permitted on the water
heater models listed in Table 4.
WATER HEATER
MODEL
40gal, 40k BTU/hr
50gal, 40k BTU/hr
Table 4.
When a Tee termination is used, two additional
vent screens must be purchased and installed (see
Figure 34 and Figure 35). On installations of venting
less than 20', a restrictive vent screen must be used. On
installations over 20' a debris vent screen must be used
(see Figure 38).
30
WALL
NOTE: IF A
TERMINATION
ELBOW IS
REQUIRED BY
LOCAL CODES
INSTALL VENT
SCREEN
IN ELBOW
INSTEAD OF
CONCENTRIC
VENT
EXHAUST.
VENT SCREEN
4 3 .5 "
M IN .
VENT SCREEN WALL
MAX. EQUIV. VENT
VENT LENGTH DIAM.
50' 2"
50' 2"
www.hotwater .com
VENT SCREEN
- INSTALL IN
TERMINATION
TEE FITTING
EXHAUST
TERMINATION
90° ELBOW
AIR INTAKE
TERMINATION
VENT SCREEN
- INSTALL IN
TERMINATIONS
*OR 12" ABOVE ANTICIPATED
SNOW LEVEL
Figure 34.
WALL MOUNTED
VENT SCREEN
SUPPORT BRACKET
(INSTALL IN
TERMINATION)
TEE FITTING
EXHAUST
TERMINATION
VENT SCREEN
(INSTALL IN
TERMINATION)
90° ELBOW
AIR INTAKE
TERMINATION
VENT SCREEN
(INSTALL IN
TERMINATION)
*OR 12" ABOVE ANTICIPATED
SNOW LEVEL
Figure 35.
"A" & "B":12" ABOVE
ANTICIPATED SNOW
LEVEL OR 12" MIN.
ABOVE ROOF.
1"
EXHAUST
VENT
TERMINAL
VENT SCREEN
- INSTALL IN
TERMINATIONS
Figure 36.
8" MIN.
APPLY SEALANT
TO BOTH SIDES
OF WALL
12" MIN.*
APPLY
8" MIN.
SEALANT
TO BOTH
SIDES OF
WALL
24" MAX.
12" MIN.*
8" MIN.
1"
INTAKE
VENT
TERMINAL
B
A
100324051_2000579115 _Rev. 01