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For use on doors 1-3/8” to 2” (35 mm - 51 mm) thick
3700 Series ANSI Grade 2 Interconnected Lock
Installation Instructions
Meets ANSI 156.12
I-LS00770
1. MARK DOOR
Place template on high edge of door bevel,
suggested height 38” (965 mm) from floor. On
door edge, mark centers of 1” (25.4 mm) holes
for both top latch and bottom latch. Check
CENTER OF
DOOR
EDGE
backset of the lock you are installing, either
2-3/8” or 2-3/4” (60 mm or 70 mm). On door
face, mark centers of 2-1/8” (54 mm) holes for
top and deadbolt bottom leverset. NOTE: Be
sure to use correct backset size.
3. INSTALL LATCHES
A. Insert latch in holes. Latch faces must be parallel
to door face. Mark latch face outline on door edge and
remove latches. Chisel 5/32” (4 mm) deep or until
latch faces are flush with door edge. Insert latches and
tighten #8 screws securely.
B. Latch faces should be vertically aligned.
C. Face plate will be flush with door edge after
tightening the screws.
A
LATCH
FACE
2. DRILL HOLES
1”
HOLE
1”
HOLE
SLEEVE
ADD THE SLEEVE WHILE
INSTALLING LATCH
Drill 2-1/8” (54 mm) hole for top
deadbolt and 2-1/8” (54 mm) hole for
bottom leverset through door face. Drill
holes from both sides of door face to
2-1/8”
prevent splitting. Drill two 1” (25.4 mm)
HOLE
holes through centers of door edge.
2-1/8”
HOLE
B
4. INSTALL STRIKES
A. Close door until latchbolts
touch jamb to locate strike on
jamb and center line of strike.
Open door and extend line from
mark to door stop. Measure one
half of door thickness plus 1/8”
(3.2 mm) from stop and vertically
mark center line for strike.
CL
CL
B To prep the deadbolt strike, drill
two (2) 1” (25.4 mm) diameter holes 1”
deep in door jamb 5/16” (8 mm) above
and 5/16” (8 mm) below the horizontal
center line. To prep the T-strike, drill
two (2) 1” (25.4 mm) diameter holes
5/8” (15.9 mm) deep in door jamb
3/16” (4.7 mm) above and 3/16” (4.7
mm) below the horizontal center line.
5/16”
CL
5/16”
3/16”
CL
3/16”
CL
C. Match screw holes on the deadbolt strike with vertical
center line on jamb. Mark the outline of the strike and chisel
that area 1/4” (6.4 mm) deep for flush fit of dust box, wood
frame reinforcer, and strike. Tighten dust box and wood frame
reinforcer to frame using 3” wood screws. Insert strike and
tighten to frame using #8 screws. Next, mark outline of T-strike
on jamb. Mortise that area 3/32” (2.4 mm). Tighten T-strike to
the frame using two (2) #8 screws. NOTE: Bottom strike has an
adjustable tab that can be bent in or out to eliminate loose fit
between door and door stop.
3" (76mm)
wood screws
Strike edges ‘A’
above, should be
vertically aligned.
A
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Page 2
3700 Series ANSI Grade 2 Interconnected Lock
Installation Instructions
Meets ANSI 156.12
I-LS00770
5. REMOVE INSIDE LEVER
Use lever catch
INSIDE LEVER
pin to depress
lever catch
visible under
inside sleeve
OUTSIDE
ROSE
collar and slide
lever off spindle.
OUTSIDE LEVER
7. INSTALL LOCK ASSEMBLY
A. Place optional outside escutcheon on exterior
door face.
B. Insert leverset into bottom latch. Latch must
be in place before installing lock. Be sure to have
lock housing engaged with latch prongs and
retractor engaged with latch tail. CAUTION: Do not
attempt to install lock with door closed.
WARNING: To ensure correct connection between
deadbolt and cylindrical lock, make sure that the
latchbolt of the upper deadbolt is not projecting prior
to inserting the tail piece into the latch hole
horizontally.
C. Install deadbolt exterior keyed cylinder and
guard. Be sure to insert tail piece horizontally
through latch hole.
TAIL PIECE LATCH HOLE
LEVER
CATCH PIN
TOP DEADBOLT
KEY HOLE
6. ADJUST DOOR THICKNESS
Adjust for door thickness by using the
provided scale gauge. The scale gauge
should be used to measure the distance
between the end of the sleeve and the
end of the rose. Rotate the rose in or
out to align the end of the sleeve with
the tick mark that corresponds to the
proper door thickness.
A - C
LATCH HOLE
TAIL PIECE
KEY HOLE
BOTTOM
LEVERSET
D
OPTIONAL
OUTSIDE
ESCUTCHEON
INSIDE LINER
THICKNESS GAUGE
END OF SLEEVE END OF ROSE
LATCH PRONGS
B
RETRACTOR
LATCH UNIT
LOCK HOUSING
NOTE: The prong should align
with the outside escutcheon
groove when screws are tightened.
TAIL PIECE
INSTALLATION
SCREW
WASHER
F
LATCH TAIL
D. Install inside liner, tighten installation screw of
leverset and deadbolt.
E. Slide inside escutcheon onto spindle of bottom
lock so driver tab engages with spindle groove.
Change direction of driver tab from left to right or
right to left if necessary to achieve proper door
handing (see step 8 for detail).
F. Slide tail piece of deadbolt onto turnpiece
groove.
G. Tighten two screws on inside escutcheon
securely.
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E
DRIVER TAB
SPINDLE
INSTALLATION SCREW
INSIDE ESCUTCHEON
ENGAGE DRIVER TAB
TO SPINDLE GROOVE
SPINDLE
GROOVE
TURNPIECE
G
INSIDE LEVER
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8. INSTALL INSIDE LEVER
3700 Series ANSI Grade 2 Interconnected Lock
Installation Instructions
Meets ANSI 156.12
I-LS00770
H. Install inside lever, use pin to press down the lever catch in the
hole and push inside lever all the way in until catch clicks into catch
hole.
CATCH PIN
INSIDE LEVER
See illustration shown below to determine hand of door.
CHANGE HAND OF DRIVER TAB
There are two driver tabs, one at the left side and one at the right side. Sliding driver tab to right side (or left side) will automatically pull out driver
tab at left side (or right side). Use correct driver tab to match handing of door.
SPINDLE
I. Properly installed, the latchbolt will retract by rotating the lever
in the downward direction only.
DRIVER TAB AT LEFT SIDE
HINGE HINGE
OUTSIDE OUTSIDE
LEFT HANDED DOOR
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DRIVER TAB AT RIGHT SIDE
RIGHT HANDED DOOR
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