Installation and Operation Manual
36 Rinnai Tankless Water Heater Installation and Operation Manual
4.5.5 Direct Vent (Concentric and Twin Pipe):
Termination Clearances
Canadian Installations
1
(CSA B149.1)
U.S. Installations
2
(ANSI Z223.1/NFPA 54)
Ref Description Direct Vent (Indoor Unit) Direct Vent (Indoor Unit)
A
C * *
D
* *
E * *
F * *
G *
H
*
I *
J
K
L
M *
Clearance to opposite wall is 24 in. (60 cm).
(Dégagement conforme aux
codes d’installation locaux et aux exigences du foumisseur de
gaz.)
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
V
SNOW
TERMINATION
A also
applies to
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
V
SNOW
TERMINATION
A also
applies to
Figure 21: Direct Vent Termination Clearances
Notes:
1
2
I