Von Duprin 9975 User manual

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
911374-00
© Allegion 2015
Printed in U.S.A.
911374-00 Rev. 07/15-f
#10-24
#12-24
Dogging Key
(use to lock down pushbar)
Installation Instructions
Mortise Exit Device
9875/9975
Customer Service
1-877-671-7011 www.allegion.com/us

2
SCREW CHART
Device Subassembly Screw Application
#12-12 x 12-24 x 1” (25 mm)
Combination Metal or wood door
#10-24 x 1” (25 mm) Surface mount or Sex bolts
1³⁄₄” (44 mm) door
#10-24 x 1¹⁄₂” (38 mm) Sex bolts, 2¹⁄₄” (57 mm) door
#10 x 1¹⁄₄” (32 mm) Wood screw Surface mount (wood)
Packaged with 990 Trims:
#10-24 x 1³⁄₈” (35 mm) 1³⁄₄” (44 mm) door, 990 Trim
#10-24 x 1⁷⁄₈” (48 mm) 2¹⁄₄” (57 mm) door, 990 Trim
575
Strike
575-2
Strike
#12-12 x 12-24 x 1” (25 mm)
Combination Metal or wood frame
576A
Strike
576B
Strike
#12-12 x 12-24 x 1” (25 mm)
Combination Metal or wood door
#10-24 x ³⁄₄” (19 mm) Surface mount or Sex bolts
1³⁄₄” (44 mm) door
#10-24 x 1¹⁄₈” (29 mm) Sex bolts, 2¹⁄₄” (57 mm) door
#10 x 1¹⁄₄” (32 mm) Wood screw Surface mount (wood)
#10-16 x ³⁄₈” (10 mm) Thread cutting End cap
#8-18 x ³⁄₈” (10 mm) Thread cutting Center case cover

3
1 Draw horizontal device center line ( ).
RHR LHR
RHR
39⁵⁄₈” (100.6 cm)
from finished floor
2 Position template on C
Land mark door.
Mark 4 holes
Mark Vertical C
L
Device
Template
2³⁄₄” Backset
(70 mm)
3 Locate strike center line (C
L).
¹¹⁄₃₂"
(9mm)
¹¹⁄₃₂"
(9mm)
Strike
Device
Mortise Lock
4 Prepare the door frame (or other door) for strike.
575, 575-2 strike shown. For 576A/576B strike preparation,
see page 7.
3³⁄₈"
(86 mm)
4⁷⁄₈"
(124 mm)
1¹⁄₄" (32 mm)
¹⁄₈" (3 mm)
Deep
¹⁄₈" (3 mm)
Deep
Door & Strike
Strike
4¹⁄₈"
(105 mm)
WOOD METAL
#16
#12-24
⁵⁄₃₂" (4 mm) pilot
3¹⁄₄"
(89mm)
Min.
clearance
Cutout 1"
(25 mm)
Deep on
Wood
Door
3³⁄₈"
(86 mm)
1¹⁄₄" (32 mm)
¹⁄₈" (3 mm)
Deep
¹⁄₈" (3 mm)
Deep
Strike
4¹⁄₈"
(105 mm)
WOOD METAL
#16
#12-24
⁵⁄₃₂" (4 mm) pilot
4⁷⁄₈" (124 mm)
Door & Strike
3¹⁄₄"
(89mm)
Min.
clearance
Cutout 1"
(25 mm)
Deep on
Wood
Door
575 STRIKE
(Single Door)
575-2 STRIKE
(Double Door)

4
5 Install strike.
For 576A/576B strike installation, see page 7.
See “Screw Chart” on
page 2 for screw types
and sizes.
6 If necessary, prepare door cutout.
For all 98/9975 devices
RHR shown, LHR opposite
³⁄₄” (19 mm)
1⁵⁄₈” (41 mm)
1” (25 mm)
For wood doors,
slot thru to mortise
lock cavity
7 Prepare door for device and trim.
Prepare 4 center case mounting holes.
See trim instructions
for pull side door
preparation. Line X-X in
trim instructions is same
as vertical device C
L.
#25
#10-24
WOOD METAL
WOOD METAL
¹⁄₈” (3 mm) x 1” (25 mm) Deep ¹³⁄₃₂” (10 mm) Drill Thru
SEX BOLTS or 990 TRIMS
¹⁄₄” (6 mm) Device Side
¹³⁄₃₂” (10 mm) Trim Side
OR
SURFACE MOUNT
8 Install mortise lock into door.
See 7500 mortise lock instruction #941019.
For TP, K and L trims with
outside cylinder to lock
and unlock trim function:
Turn set screw all the way
in until screw head is no
longer visible.
Screw has Loctite.
It may be necessary
to run screw up and
back down a second
time.
For EO, DT, NL, E7500,
and “double cylinder”
applications,
leave the set screw as
shipped.

5
9 Install outside locking cylinder (if using) and
complete installation of mortise lock.
See 7500 mortise lock instruction #941019.
10 If necessary, cut device.
1¹⁄₂” (38 mm)
recommended
Jamb
Jamb
Temporarily remove
anti-rattle clip
Cover plate flush
11 Install trim (if using) and attach center case
to door.
Thru-Bolting Trim
Sex BoltsSurface Mount
OR

6
12 Mark and prepare two holes for end cap bracket.
Prepare holes after lock side of device is mounted and
hinge side is leveled.
c
b
aSURFACE MOUNT
#25
#10-24
WOOD METALWOOD METAL
¹⁄₈” (3 mm) x 1” (25 mm) Deep
¹³⁄₃₂” (10 mm) Drill Thru
SEX BOLTS
¹⁄₄” (6 mm) Device Side
¹³⁄₃₂” (10 mm) Trim Side
OR
13 Install end cap bracket and end cap.
14 Adjust latch bolt.
Adjustment screws
Adjustment finger
Pushbar
TOP VIEW
Latch bolt
³⁄₄” (19 mm)
Loosen adjustment screws and adjust finger in or out
until latch bolt is fully retracted (with pushbar down)
and fully extended ³⁄₄” (with pushbar up).
15 Install center case cover.
Remove protective
film from pushbar

7
576A/576B STRIKE PREPARATION & INSTALLATION
Metal door
Wood door
576A Strike
(1³⁄₄" Door)
576B Strike
(2¹⁄₄" Door)
2¹⁄₁₆" (52 mm)
1" (25 mm)
³⁄₁₆" (5 mm) Deep
4⁷⁄₈" (124 mm)
¹⁄₈" (3 mm) Deep
3³⁄₈"
(86 mm)
1¹⁄₄" (32 mm)
¹⁄₈"
(3 mm)
Deep
3¹⁄₄" (89mm)
Min. clearance
Door & Strike
Strike
4¹⁄₈" (105 mm)
WOOD METAL
#16
#12-24
⁵⁄₃₂" (4 mm) pilot
PREPARATION INSTALLATION
OPTIONAL EQUIPMENT
CD (Cylinder Dogging) Option
Dog Undog
a
b
c
d
e
f

8
OPTIONAL EQUIPMENT (98/9975-2 DOUBLE CYLINDER)
Install Cylinder
C
L
C
L
a
b
c
d
e
¹⁄₂” (13 mm)
diameter hole
(Device side only)
Cylinder Mounting Screws
DO NOT over-tighten
#8-32 x ⁵⁄₁₆” (8 mm)
PPHMS
RHR shown
(LHR opposite)
#8-18 x ³⁄₈” (10 mm)
PPHSMS
¹⁄₄” (6 mm)
2¹⁄₄”
(57 mm)
Device
Door Cutout for 98/9975-2
“Double Cylinder” Option
_____________________________________________________________________________________________________________
Install Cylinder Adapter Plug Assembly to Mortise Lock
RHR Shown Opposite Side of Lock
a
b
c
a. Screw cylinder adapter plug assembly
into lock on device side using a ¹⁄₄"
(6 mm) square socket driver.
b. Position finger as shown. c. Tighten cylinder screw to
hold in place.
b
_____________________________________________________________________________________________________________
A lock/unlock label is an available option that can be used with the 98/9975-2, and is sold separately. The labels are applied above and
below cylinder to match door handing.
Manually affix the label:
Ensure surface is clean of dirt, dust, or oils. Clean with
alcohol if necessary.
Peel the label from the paper backing and apply to the
surface. Minimize handling when applying and use
pressure to burnish label to surface. The adhesive will
require up to 8 hours to achieve the proper bond.
RHR shown
Peel and stick
appropriate set of
labels depending on
door handing. Stick labels
above and below cylinder.
RHR9975-2 LHR9975-2
These small labels NOT used
for mortise device.