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Rinnai Tankless Water Heater Installation and Operation Manual 42
2. Non-Direct Vent (Room Air and External)
Canadian Installations
1
(CSA B149.1)
U.S. Installations
2
(ANSI Z223.1/NFPA 54)
Ref Description Other than direct vent
(Outdoor unit and/or Room Air)
Other than direct vent
(Outdoor unit and/or Room Air)
A
B
C * *
D
* *
E * *
F Clearance to outside corner * *
G Clearance to inside corner * 12 in.
H
*
I *
J
K
L
can cause a nuisance or hazard.
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
X
V
SNOW
TERMINATION
Clearance in
A also
applies to
anticipated
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
X
V
SNOW
TERMINATION
Clearance in
A also
applies to
anticipated
Figure 38: Room Air and External Termination Clearances
Notes:
1
2
Table 17
I
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