Janus Mv Series - Page 141

Page: 127
MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
In a back-to-back sidewall arrangement, the nozzles shall be installed as shown in Figure 3.2.3.1c below and must be
orientated with direction of flow in opposite directions so that the centerlines of both nozzles are parallel to the run of the
tee immediately feeding into the nozzles. Back-to-back sidewall nozzles must be orientated in a pendant position.
Figure 3.2.3.1c Back-to-Back Sidewall Nozzle Orientation - Typical Arrangements
VIEW A-A
SCALE .4
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6.
'
77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6
'
.77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
14.00 in
MAXIMUM
MAXIMUM
12" (304.8 mm)
BELOW THE CEILING
VIEW A-A
SCALE .4
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6.
'
77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6
'
.77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
14.00 in
MAXIMUM
MAXIMUM
12" (304.8 mm)
BELOW THE CEILING
VIEW A-A
SCALE .4
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6.
'
77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
M
A
X
I
M
U
M
D
I
S
T
A
N
C
E
O
F
1
6
'
.77
F
O
R
E
A
C
H
N
O
Z
Z
L
E
14.00 in
MAXIMUM
MAXIMUM
12" (304.8 mm)
BELOW THE CEILING
Appendix D