Maximum Vent Length - Rinnai RUC80i Installation And Operation Manual

Maximum vent length

M x m m V L g h w h C
1. Determine the number of 90 degree elbo s in
the vent system. (T o 45 degree elbo s count as
one 90 degree elbo .)
2. efer to the table to nd the maximum vent
length based on the number of elbo s.
N r G s U
Co c
(90° elbow is equivalent to 6 feet; 45° elbow is equivalent to 3 feet.)
# of 90° bows
0
1
2
3
4
5
6
C
(90° elbow is equivalent to 6 feet; 45° elbow is equivalent to 3 feet.)
# of 90° bows
0
1
2
3
4
5
6
3. Adjust SW1 in DIPSW 1 (tan s itches) if required
by the applicable note.
1 If the length is greater than 21
move SW1 to .
2 If the length is greater than 15
move SW1 to .
3 If the length is greater than 9
SW1 to .
4 Move SW1 to .
V g
s O y
r c
9
f
rs
1
65 (19.8)
2
59 (18.0)
3
53 (16.2)
4
47 (14.3)
4
41 (12.5)
4
35 (10.7)
4
29 (8.8)
O
f
rs
1
41 (12.5)
2
35 (10.7)
3
29 (8.8)
4
23 (7.0)
4
17 (5.2)
4
11 (3.4)
4
5 (1.5)
(6.4 m) then
(4.6 m) then
(2.7 m) then move
KBD Series Manual
Example: If you have one elbow then your
maximum vent length is 35 feet (10.7 m).
If your a tual length is greater than 15
(4.6 m) then move SW1 in DIPSW 1 to
OFF.
NO CE
If you have a longer vent length (see number 3
regarding max. vent length), SW1 in DIPSW 1 is
required to be in the
ater heater ill run properly. Blocked flue
diagnos c codes and shutdo ns may result if SW1 in
DIPSW 1 is not in the correct posi on.
M x m m V L g h
Inno lue Vent System (single all SW, 3 inch diameter)
V g h
(Intake is the short UV protected 90° elbo )
N mb
M x m m
90° Sh
S gh V
R d
L g h
E b w
0 41 (12.50 m)
1 26 (7.93 m)
2 11 (3.35 m)
V g h
(Intake is the long UV protected 90° elbo )
N mb
M x m m
90° L g
S gh V
R d
L g h
E b w
0 41 (12.50 m)
1 35 (10.67 m)
2 29 (8.84 m)
3 23 (7.01m)
4 17 (5.18 m)
5 11 (3.35 m)
6 5 (1.52 m)
posi on. This ensures the
C h m 2
g h d b w
SW1 SW 1
If length is greater
than
18 (5.49 m) move
SW1 to
3 (0.91 m) move SW1
to
move SW1 to
any length
g g d b w
SW1 SW 1
If length is greater
than
21 (6.40 m) move
SW1 to
15 (4.57 m) move
SW1 to
9 (2.74 m) move
SW1 to
3 (0.91 m) move
SW1 to
move SW1 to
for any length
for
11