SARGENT NB-MD8400 Series Narrow Style Concealed Vertical Rod - Manual (Page 2)

16) Before closing door, check the following:
a) Push rail in to retract bolt
b) Bolt stays retracted (hold back)
c) Bolt releases when door closes. Button inside top of door hits frame
d) Bolt engagement with strike 1/4"- 5/16"
e) Adjust bolts (per step 7)
17) For NB-AD-8400: Attach 640 strike using instruction sheet A8037 supplied with
strike pack.
18) For NB-MD-8400 and 12-NB-MD-8400: Attach 650 top strike to frame with two
#10-24 x 1/2" flat head screws. See chart on left.
19) Position cover (L) on chassis (C) and secure with (2) screws (BB)
20) Attach end cap (K) to mounting plate (J) with (2) screws (BB)
21) Secure rail assembly (H) to chassis (C) and cover (L) with (2) screws (AA)
Instructions for Installing NB-AD-8400, NB-MD-8400, &
12-NB-MD-8400 Series Concealed Vertical Rod Exit Device
Verify that the correct exit device is being installed on the correct door. Function, finish and
size should all be verified.
Note: Before removing door from hinges, determine the gap
between top of door and frame. This information is needed for step #7. Remove door
from the frame.
1) Drill, tap & c’sink the door per template, except
for the (2) #10-24 (4A) on the hinge side.
2) Screw top bolt & rod assembly (A) into inner chassis (B).
3) Slide complete assembly into top of door.
4) Attach inner chassis (B) to door with screw (EE) using
hole (3A).
Note: If 700 Series ET Control is being used, it must be
installed at this point, prior to step 5. See appropriate
instructions.
5) Position chassis (C) and attach to inner chassis (B) using
hole (5A) with washer (JJ) & screw (HH). Do not tighten yet.
6) Secure top of chassis (C) to door with screw (FF) using
tapped hole (2A). Do not tighten yet. Use chassis (C) to
retract top bolt & rod assy (A) to adjust bolt projection.
Note: Rod must be retracted while adjusting bolt projection.
Use chassis (C) to retract top bolt & rod assy (A).
7) Adjusting the top bolt & rod assembly (A):
1) 1/8" gap or less between door top and frame. Rotate
bolt to make even with top of the door
2) 1/8"gap or greater. Bolt to extend above door equal
to gap minus 1/8"
8) Slide rod silencer (G) over top bolt (F) onto rod, followed by top
chassis (E). Secure top chassis (E) to door with (2) screws (DD)
using holes (1A).
9) Install door into the frame using hinges
10) Slide rail assembly (H) onto chassis (C)
11) Align holes for screws (AA)
12) Level rail
13) Locate & mark holes for mounting plate (J) on hinge side.
Drill & tap (2) holes (4A).
14) Attach mounting plate (J) and secure rail assembly (H) to
door with (2) screws (CC).
15) Tighten screws (HH) & (FF) to secure chassis (D) to door
1/4"-20 x 2-3/8"
PHILLIPS FLAT HEAD
MACHINE SCREW
(FOR MOUNTING "ET"
TRIM: 2 REQUIRED) #8-32 x 3/8" PHILLIPS
TRUSS HEAD
MACHINE SCREW
(2 IN PACK FOR CHASSIS
TO RAIL ON ALL DOORS) #8-32 x 5/16"
PHILLIPS OVAL HEAD
MACHINE SCREW
(4 IN PACK FOR
ALL COVERS) #10-24 X 3/4"
END CAP
(2 IN PACK FOR END CAP
MOUNTING BRACKET)
#10-24 X 1/2" PHILLIPS
FLAT HEAD MACHINE
SCREW
STRIKE PACK FOR NB-MD-8400
1/4-20 X 1/2"
PHILLIPS ROUND HEAD
MACHINE SCREW
(1 IN PACK FOR
TOP OF CHASSIS) #10-24 X 3/4"
PHILLIPS FLAT HEAD
MACHINE SCREW
(1 IN PACK FOR OUTER CHASSIS
TO INNER CHASSIS)
#10-24 X 3/8"
PHILLIPS OVAL HEAD
MACHINE SCREW
(2 IN PACK FOR
TOP CASE)
SCREWS USED FOR NB-AD-8400, NB-MD-8400 AND 12-NB-MD-8400 EXIT DEVICE INSTALLATION
STAR WASHER
650 TOP STRIKE
STRIKE (1 REQUIRED)
#10 X 1/2"
PHILLIPS FLAT HEAD
MACHINE SCREW
(2 IN PACK FOR
TOP STRIKE)
STRIKE PACK FOR NB-AD-8400
STRIKE (1 REQUIRED)
#10 X 1/2"
PHILLIPS FLAT HEAD
MACHINE SCREW
(2 REQUIRED)
640 TOP STRIKE
FINISHED FLOOR
HINGE STILE
OF CHASSIS
1-1/4"
1/4"
5/8" GAP
36-3/4"
UNLESS
OTHERWISE
SPECIFIED
3-11/16"
41"
STD.
HGT.
7-5/16"
4-1/2"
7/32" DIA
C' SINK FOR
#10 SCREW
DRILL AND TAP
for 1/4-20 TH'D
1-1/4"
7/8"
Door prep shown is
the same for all less
bottom rod 8400
Exit Devices, except
the 12-NB-MD-8400
requires the thermal
pin supplied.
Note: If 100 Series
Auxiliary Control is
being used, door
must be prepped for
Aux Control prior to
installing device on
to the door. Aux
Control can be
installed after exit
device is installed.
See appropriate
instructions.
For additional information,
contact SARGENT ® at
1-800-727-5477
4A
1A
AA BB CC DD
EE FF HH JJ
2A
3A
5A
DRILL AND CUTOUT
THIS SIDE OF DOOR
ONLY
7/32" DIA.
Information for Cutting Rails
Rail Sizes
Door Widths
Max Min
E 32" 24"
F 36" 33"
J 42" 37"
G 48" 43"
OUTSIDE
INSIDE
LEFT HAND
REVERSE
BEVEL
RIGHT HAND
REVERSE
BEVEL
THIS EXIT DEVICE IS HANDED
CHECK HAND OF DEVICE AGAINST APPLICATION
Note: 12-NB-MD-8400 Series
exit devices require installation
of thermal pin to be fire rated.
INSIDE SURFACE OF LHRB DOOR SHOWN
(2) 7/32" DIA & C'SINK
POSITION OF MOUNTING SCREW
HOLES ARE IDENTICAL FOR
EITHER HAND
DRILL AND TAP HINGE STILE FOR
#10-24 SCREW. USE MOUNTING
PLATE TO LOCATE HOLES.
7/8"
Round
head
screw
1/4-20 x 1/2"
Inner
chassis
Chassis
Top bolt & rod
assembly
#10-24 x 1/2"
Phillips flat head
machine screws
A
EE
B C
FF
HH
Oval head
screw
#8-32 x 5/16"
End cap
Round head
screw
#10-32 x 3/4"
Mounting plate
Rail assembly
BB
CC
H
K
J
Inner chassis
Chassis
Top
chassis
Oval head
screw
#10-24 x 3/8"
Oval head
screw
#8-32 x 5/16"
Silencer
Cover
Top bolt
#8-32 x 3/8" Truss
Head Screws
E
DD
F
G
B
C
AA
L
BB
3/4"
A6697L
5/15/09
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Reproduction in whole or in part without the express written permission of Sargent Manufacturing Company is prohibited.