Von Duprin 24739476_b 3350 WDC Inst 33/3550A 110815

User Manual: Von Duprin 33/3550A WDC Installation Instructions

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33/3550AWDC

24739476
Installation Instructions

Fire-Rated
Devices
include these
additional
components
1-Point
Latch
(LBL)

Metal Edge
Wrap required
for 60 and
90-minute
applications

2-Point
Latch
includes these
additional
parts
!

NOTE: If door does not have a cutout for
cabling inside lock stile, door must be
routed. Refer to 33/3550AWDC wood
door template #24731408.

1 OVERVIEW AND DOOR PREPARATION
33/3550AWDC
Instead of traditional rods, concealed vertical cables are utilized, making use of a proven technology
that enables quick installation and allows for easy maintenance. Simplified sizing, ease of adjustment
and greater door integrity make the Wood Door Concealed exit device a more secure solution, without
the complexity associated with traditional concealed systems. Another key benefit of the system is the
ability to make adjustments to the system by simply removing the scalp plate from the edge of the
door.
If you have any questions or comments please visit the resources below or give us a call so we can
help get you on your way. Thank you for your continued support of Von Duprin.
Technical Support hot line: 877-671-7011
Scan this QR code or visit us online at kc.allegion.com to access the
Allegion Knowledge Center.
Need a reader for your phone?
For iPhone: QR Reader
For Android: QR Barcode Scanner

TABLE OF CONTENTS
INSTALLATION
1.
2.
3.
4.
5.

Overview and Door Preparation
Fire Barrier
Latch Installation
Cable Installation
Device Installation

pg 2-3
pg 4-5
pg 6
pg 7
pg 8-9

ADJUSTMENT
6.
7.
8.
9.
10.

Device Adjustment
Strikes and Fire Pin
Bottom Latchbolt Clearance
Top Strike and Covers
Troubleshooting

pg 10-11
pg 12-13
pg 14
pg 15
pg 16

1 (continued)
1a

For 60 and 90-minute applications, install metal edge
wrap.

If necessary, prepare center case mounting holes.
Device

Sex bolts Ø ¹³⁄₃₂" thru (Pre-prepped at factory)
Trim Ø ¹⁄₂" thru (Enlarge existing holes)
(2 places)

3¹⁄₈"
Device

3¹⁄₈"

1¹⁄₂" Backset

RHR shown
(LHR opposite)

With door laying flat, draw horizontal device center
line (CL ).

If necessary, prepare door for top strike cutout.
Latch
2"
Cut out material
this side only

RHR shown
(LHR opposite)

1³⁄₁₆"
⁵⁄₈"

Push side of door, RHR shown
!

NOTE: Centerline is
predetermined by cutout.

2 FIRE BARRIER
I
I

Fire application only
Fire components must be installed to maintain fire rating
of opening.

2a
I

Remove appropriate knockouts for device and trim.

Peel adhesive backing from intumescent and apply to
trim side of fire barrier.
RHR

Intumescent must be properly aligned before exposed
adhesive contacts fire barrier. Adhesive is permanent and
not repositionable.

RHR

Exit Only (EO) shown

a-2
Trim Side

a-1
OR

LHR

a-2

Exit Only (EO) shown

Trim Side

a-1
4

2 (continued)
2c

With fire barrier in correct orientation, slide barrier into
door pocket.

Secure fire barrier to inside of pocket with 4 screws.

RHR shown

Trim Side

FIRE BARRIER KNOCKOUT TABLE

RHR
Trim
Model
Exit Only

Trim
Function
EO

LHR

Right Hand Reverse (RHR)
Remove the knockouts listed below
A B C D

Left Hand Reverse (LHR)
Remove the knockouts listed below
F G H I

386
386

DT
NL

A B C D H

C F G H I

388

A B C D G H

B C F G H I

550

A B C D E J

E F G H I J

A B C D
(If mounted below, remove E, J)

F G H I
(If mounted below, remove E, J)

A B C D F G H

A B C F G H I

392-6

360
360
360
360
360

L
L-BE
L-DT
T
T-BE

3 LATCH INSTALLATION
3a

Confirm top latch is marked for EXIT DEVICES ONLY,
then remove label.

Secure latch(es).
Top

Bottom

Push Side
of Door
ATTENTION:
FOR USE WITH
EXIT DEVICES ONLY

For 2-Point Latch Only
Push Side
of Door

RHR shown

Connect cable end fitting(s) to latch(es).

#10 x 1¹⁄₂"

#25 Drill, Pilot 1¹⁄₂" Deep x4

For 2-point latches, the top cable is the longer of the two
cables. Top cable is silver, bottom cable is black.

Pull down on
cable link

Bend cable slightly
to access
cable link,
then
install
cable
link

b-1

cable
link

(2-pt only) Pulling on
bottom cable should
retract bottom latch.

For 2-Point
Latch Only

Slide latch(es) into door pocket.
Clear cable channel of debris first if necessary.

#25 Drill, Pilot 1¹⁄₂" Deep x4

Perform cable binding check at mortise pocket.
Pulling on top cable should
lock and unlock top latch.

b-2
Slide cable end
into cable link

If using metal edge
wrap, mount latches
using this screw

Bottom

Top

Prepare door for hanging.

Pull top cable taut and tape cable
end to door edge (f-1).

Top
Push Side
of Door

f-1

Push
Side

For 2-Point
Latch Only

Pull bottom cable taut enough so bottom bolt will not
drag against floor, and tape cable end to door edge
(f-2). This holds cable in place, preventing it from
dropping into door channel. Tape bottom bolt in place
(f-3).

Bottom
Push Side
of Door
Push
Side

For 2-Point
Latch Only
6

f-2

3g
I

f-3

Hang door on frame.
For 2-point latches, bottom latch cannot be in locked
position while hanging door on frame. Latch must be
retracted.

4 CABLE INSTALLATION
4a
I

Insert cable end fitting(s) into center slide.

Secure center slide.

Be sure to attach top cable to top end of center slide
(marked “Top”)
Pull top cable thru mortise
opening (a-1).

a-2
a-1

a-3

Rotate spool using hex
wrench to reveal cable hole
in spool (a-2), if it is not
visible or only partially
visible.

¹⁄₈" Drill, Pilot 1" Deep x2
Insert cable end into spool
(a-3).

#8 x 1"

Turn spool screw
counterclockwise (a-4) to
rotate spool until cable end is
beneath profile of center
slide (a-5).

a-4
a-5

⁵⁄₃₂"
hex
wrench

4d
!

a-6

For 2-Point Latch Only

Adjust top spool.
NOTE: Top latch must be placed
in locked position prior to making
top adjustment.

Remove tape from door edge, then repeat
process to install bottom cable into bottom spool.

4b
I

d-1

If latch won’t
lock, top spool
screw was
overtightened in
Step 4b and
needs to be
backed out
clockwise.

Take up top cable slack only.
A flashlight would be useful during adjustment.

Position center slide as shown. Turn top
spool screw counterclockwise to
tighten (b-1) until center slide is no
longer hanging outside door.

Put top latch in locked
position (d-1).

Released

Locked
Confirm top latch is
still locked (d-4).

Turn top spool screw
(d-2) until bottom edge of
spool is just above line
(d-3).

Do not adjust
bottom cable
at this time.

d-4
b-1

⁵⁄₃₂"
hex wrench

NOTE: If clicking noises are heard
during counterclockwise adjustment,
unwind the cable with one-half turn
clockwise. Then, continue counterclockwise adjustment. If clicking persists,
check to be sure cable is not caught on
an edge.

Center slide
is resting on
step of door
pocket

Bottom
edge of
spool

d-2
!

d-3

NOTE: No further top spool adjustment needed.
Put hex wrench away until Step 8b.

Locked

5 DEVICE INSTALLATION
5a

If necessary, cut device.

1¹⁄₂" (38 mm)
Recommended

Jamb

Door

Install lift finger(s) and retainer clip(s).

Using tube of grease provided, apply grease to interior of rod connector
sleeve in locations shown (b-1). With device center case hanging over edge
of table, slide rod connector sleeve over top end of center case in
orientation shown (b-2), then insert mounting screw thru hole in center case
and slot in clip (b-3).
Block may need to
be pushed down
to insert screw

b-3

Temporarily Remove
Anti-Rattle Clip

b-1

(1³⁄₄" door)
Top

b-2
(2¹⁄₄" door)

Cover Plate
Flush

Slide L-shaped lift finger thru upper
block on front of center case.

Insert lift finger screw and turn
clockwise with screwdriver to raise
lift finger until the slot
aligns with diameter
of screw hole.

b-4

b-5

Install retainer clip against lift finger,
snapping it into the slot of the lift
finger screw.

Lightly tighten locking screw (b-7).
!

It may be necessary to rotate
the lift finger screw to realign
retainer clip and lift finger holes.

b-7

b-6

b-8
slot
!

Confirm lift finger screw is
free to rotate (b-8).

For 2-Point Latch Only
Repeat steps b-1 thru
b-8 for lower block of
center case.

b-9

Bottom

5 (continued)
5c

Attach center case to door.

Mark and prepare 2 holes.

d-1

d-2

d-3

Surface Mount

Do not overtighten
center case to door
(door edge cover
plate won’t fit).
Block may need to be pushed up to
access screw.

¹⁄₈" Drill, Pilot 1" Deep
OR

Thru-bolting Trim

Sex Bolts

¹³⁄₃₂" Drill thru

Install end cap bracket and end cap.

e-1

(1³⁄₄" door)

(2¹⁄₄" door)

e-2

#10 x 1¹⁄₄" Wood screw
(Surface mount WDC)
#10-24 x ³⁄₄"
(Sex bolts, 1³⁄₄" door)
#10-24 x 1¹⁄₈"
(Sex bolts, 2¹⁄₄" door)

6 DEVICE ADJUSTMENT
ADJUSTMENT COMPONENTS

Center Case

Reverse Angle

Center Slide

Top lift finger screw:
Adjusts release point of latches

Top spool screw:
Sizes cable to door height

Top locking screw:
Locks lift finger screw adjustment

Top lift finger:
Transfers motion from exit device
spool inputs

Top spool input:
Transfers motion from lift finger to
latch

Bottom locking screw*:
Locks lift finger screw adjustment

Bottom spool input*:
Transfers motion from lift finger to
latch

Bottom lift finger screw*:
Adjusts release point of latches

Bottom lift finger*:
Transfers motion from exit device
spool inputs

Bottom spool screw*:
Sizes cable to door height and
undercut

* For 2-point
latch only

Push Side of Door

Pull Side / Edge of Door

6 (continued)
6a

Adjust device for top latch retraction position.

Steps marked with a
Put top latch in
locked position.

symbol are different if using 360L / 360T trim.
Depress and HOLD push pad (or dog device)
until Step a-6.
If using 360L / 360T trim, turn and hold
lever / thumb turn instead.

a-1
a-2
If top latch releases,
adjustment is good;
proceed to Step a-5.
Otherwise, continue to
Step a-3.

Maintain downward pressure on screwdriver
and turn top lift finger screw counterclockwise to lower lift finger. With other hand,
press on top latchbolt. STOP as soon as top
latch releases.

Adjust device for bottom latch retraction positon.

For 2-Point Latch Only
Depress and HOLD
push pad (or dog
device) until Step b-4.
If using
360L / 360T trim,
turn and hold
lever / thumb turn
instead.

Maintain upward pressure on screwdriver and
turn bottom lift finger screw (b-2) counterclockwise to adjust past point where bottom lift
finger contacts bottom spool input (b-3).
Continue adjusting until bottom spool input
reaches end of travel or until bottom lift finger
reaches max adjust.

b-3

b-1

Turn top lift finger screw
counterclockwise an
additional 2 full turns.

b-2
0

a-3

a-4

a-5

2 additional
turns
max adjust

Release push pad.

Release push pad.
If using 360L / 360T trim,
release lever / thumb turn
instead.

While pressing down on top lift finger
screw (a-7) so it is seated, tighten top
locking screw (a-8).

If using 360L / 360T trim,
release lever / thumb turn
instead.

a-7

b-6
b-4

a-8

Push up on bottom lift finger screw
so it is seated, and tighten the bottom
locking screw.

b-5

a-6
Using your finger, put top
latch in locked position.

With pushpad depressed, you should be
able to release top latch with your finger,
as shown below.

a-9
a-10

Locked

Released
11

7 STRIKES AND FIRE PIN
7a

Prepare door frame for top strike.
If using a door seal or gasket, install first.

Install 2 top strike screws using the slot features on
the strike.

From push side of door, with door nearly
closed, use straight edge to transfer
location of inside edges of top latch
housing to underside of stop (a-1).

PU
S
OF H SI
DO DE
OR

a-1
From pull side of door,
transfer marks to
underside of
frame (a-2).

Typical installation
requires 1-thick and
1-thin shim. Adjust as
necessary.

150 Top Strike

a-2

E
SID
L
R
L O
PU DO
F
O

(metal)

With flat end of strike against stop, center strike to marks on frame (a-3).
Use a pencil to trace contour of the two slotted holes (a-4).

(wood)
Edge of stop
or gasket

a-4
a-3
Mark the bottom center point of each slot (a-5) and prepare door frame as
shown.
!

Metal

Do not drill 3rd hole at this time.

Center punch + ¹⁄₁₆" Pilot
#25 x ³⁄₄" Deep x2
#10-24

a-5

Wood
¹⁄₈" Drill
Pilot 1" Deep x2

7c
c-1.
c-2.
c-3.
c-4.

Perform top latch functional test.
Close door.
With door closed, top latch should be secure.
If door fails to relatch, adjust top strike location.
Depress pushbar. Door should begin to open when
pushbar is nearly fully depressed. If necessary, refer to
Step 6A to readjust top latch retraction position.

7 (continued)
7d

Prepare floor for bottom strike.
For 2-Point Latch Only

Install bottom strike.
For 2-Point Latch Only

Clear holes of debris, then
drop in anchors (slotted end
first)

Pull Side
Latch
Chisel out pocket
¹⁄₂" Deep

Secure the anchors using a
hammer and punch

1¹⁄₄"

e-2

e-1
1"

⁷⁄₈"

IMPORTANT:
Anchors must
be below flush.

¹⁄₂"

Push Side

³⁄₈" Dia. x 1¹⁄₄" Deep
2 places

Install strike plate and secure
with 2 screws

e-3

450 Bottom Strike

7f
I

For Fire LBL applications only, install fire pin.
See instructions packaged with fire pin.

8 BOTTOM LATCHBOLT CLEARANCE
8a

Remove tape holding bottom bolt in place from bottom
of door.

Perform bottom latch functional test.
For 2-Point Latch Only

For 2-Point Latch Only

8b
I

c-1.
c-2.

Adjust bottom latchbolt clearance.
A flashlight would be useful during adjustment.

For 2-Point Latch Only
Reach inside center slide and push downward on shelf of top
spool input to release top latch, if not already retracted. Line
shown in Step 4d-3 should no longer be visible.

b-1

Push bottom spool input upward until flat of input
hits stop. Input should lock in place.

stop

b-2

Turn bottom spool screw counterclockwise approximately
20 turns to remove slack. Continue turning until bolt just
clears top of strike (b-4).
bolt

b-3

strike

b-4

³⁄₈" standard
undercut

NOTE: If clicking noises are heard during counterclockwise
adjustment, unwind the cable with one-half turn clockwise.
Then, continue counterclockwise adjustment. If clicking
persists, check to be sure cable is not caught on an edge.

Confirm bottom latchbolt does not drag against floor when
door is opened.
With door closed, bottom latch should be secure.

9 TOP STRIKE AND COVERS
9a

Adjust top strike as necessary, then install the third
strike screw to fix the strike position.

Install cover plate to door edge, then completely
tighten down center case screws.
For non-fire devices, first
prepare door edge

Metal
#25 x ³⁄₄" Deep

¹⁄₈" Drill, Pilot 1" Deep x2

#10-24
OR

Wood
¹⁄₈" Drill
Pilot 1" Deep

(metal)

c-1

(wood)

c-2

For fire devices, prepare door edge and cover plate.

Fire application only

Intumescent must be properly aligned before exposed
adhesive contacts cover plate. Adhesive is permanent and
not repositionable.

9d
³⁄₁₆" Drill, Pilot 1" Deep x2

b-1

Install center case cover.

Peel adhesive backing from
intumescent and apply to
back side of cover plate

b-2

Remove protective
film from pushbar

Insert plastic
anchors

b-1

10 TROUBLESHOOTING

If latches do not retract when pushpad is depressed:
Remove cover plate from edge of door
Pull down on top spool input. If the top latch fails to actuate, readjust top spool (Steps 4d-1 thru 4d-4).
Pull up on bottom spool input. If the bottom latch fails to actuate, readjust bottom latch clearance (Steps 8b-1 thru 8b-4).
If both actuate and the door is not functioning, proceed to next check.
Remove center case cover
Check lift finger screws to ensure they are still fully seated. If unseated, loosen
locking screw, and while applying pressure to the head of the lift finger screw to
seat it, tighten locking screw. If door is not functioning, proceed to next step.
With both lift finger screws fully seated, loosen top and bottom locking
screws, turn lift finger screws clockwise to end of travel, and repeat
device adjustment, Step 6.

Seated

Unseated

If bottom spool input does not move during Steps 6b-2 / b-3:
Loosen bottom spool screw 10 turns.

If the 33/3550AWDC center case cover is difficult to install:
Loosen bottom screw installed in Step 5c and lift rod connector sleeve until it will go no higher, then retighten screw.

Customer Service
1-877-671-7011

www.allegion.com/us

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Von Duprin 24739476_b 3350 WDC Inst 33/3550A 110815

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