Installation Sheet

32 Rinnai Tankless Water Heater Installaon and Operaon Manual
Canadian Installaons
(CSA B149.1)
U.S. Installaons
(ANSI Z223.1 /NFPA 54)
Ref Descripon
Other than direct vent
(Outdoor unit and/or Room Air)
Other than direct vent
(Outdoor unit and/or Room Air)
A Clearance above grade, veranda, porch, deck, or balcony 12 in. (30 cm) 12 in. (30 cm)
B Clearance to window or door that may be opened 36 in. (91 cm)
4  (1.2 m) below or to side of opening;
1  (300 mm) above opening
C Clearance to permanently closed window * *
D
Vercal clearance to venlated sot, located above the
terminal within a horizontal distance of 2  (61 cm) from
the center line of the terminal
* *
E Clearance to unvenlated sot * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
Clearance to each side of center line extended above
meter/regulator assembly
* *
I Clearance to service regulator vent outlet
Above a regulator within 3  (91 cm)
horizontally of the vercal center line of
the regulator vent outlet to a maximum
vercal distance of 15  (4 m)
*
J
Clearance to non-mechanical air supply inlet to building or
the combuson air inlet to any other appliance
36 in. (91 cm)
4  (1.2 m) below or to side of opening;
1  (300 mm) above opening
K Clearance to a mechanical air supply inlet 6  (1.83 m)
3  (91 cm) above if within 10 
(3 m) horizontally
L
Clearance above paved sidewalk or paved driveway located
on public property
7  (2.13 m) [1] *
M Clearance under veranda, porch, deck, or balcony 12 in. (30 cm) [2] *
Room Air and External Terminaon Clearances
Non-Direct Vent (Room Air and External)
2
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
X
V
SNOW
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
Clearance to opposite wall is 24 in. (60 cm).
[1] A vent shall not terminate directly above a sidewalk or paved driveway that
is located between two single family dwellings and serves both dwellings.
[2] Permied only if veranda, porch, deck, or balcony is fully open on a mini-
mum of two sides beneath the oor.
 Clearances are in accordance with local installaon codes and the
requirements of the gas supplier. (Dégagement conforme aux codes
d’installaon locaux et aux exigences du foumisseur de gaz.)