Factory Direct Hardware LCN SEM7830 User Manual
Sem 7830, Caution, Fig. 3
SEM 7830
Sentronic Electro-Magnetic
Single Door Holder Surface Wall Mount
®
®
1-800-526-2400
12/06 © 2006 SCHLAGE LOCK Company. All rights reserved D.P. # 29351
IMPROPER INSTALLATION MAY
RESULT IN PERSONAL INJURY OR
PROPERTY DAMAGE. FOLLOW ALL
INSTRUCTIONS CAREFULLY. FOR
QUESTIONS, CALL LCN AT
800 - 526 - 2400
CAUTION
!
SURFACE ADAPTER
HOUSING
WALL LINE
DOOR
DOOR JAMB
Step 1: Locate the Surface Mount Box
A. The magnet is shipped partially assembled for protection. Unscrew the cover from the magnet
bracket assembly. Unscrew the magnet bracket assembly from the surface mount box. Keep
the screws for later reattachment.
B. See Fig. 1. Measure dimensions A and B. Find the intersection of those two dimensions in
Table 1. The intersection is dimension C, the centerline of the surface mount box location. (
C. If dimension A or B is not shown on the chart, extrapolate to find dimension C as follows.
If dimension A is 11” and dimension B is 36”, then:
dimension C = 33 7/16 - ((33 7/16 - 33)/2) = 33 7/32
If dimension A is 12” and dimension B is 35”, then:
dimension C = 33 - ((33 - 30 7/8)/2) = 31 15/16
If dimension A or B is beyond those listed in Table 1 or if they intersect in a blank area in
Table 1, use optional extensions as needed to align contact plate and magnet.
D. See Fig. 2. The center of the surface mount box should be located about 5” from the top of the
door. Using the 10 x 1 ½” PHWS screws, attach the surface mount box vertically to the wall with
the surface conduit knockout pointing in the desired direction. Anchors to be provided by others
to suit wall construction other than wood. The box must at least withstand a 50 pound pull.
E. Install the ½” x 11/32” surface conduit as needed.
F. Pull wire in accordance with applicable codes, standards, and authorities having jurisdiction.
Electrical specifications are shown below.
For
180° installations, take B dimension and subtract 5 5/8” to find the centerline of junction box.
Note: Optional extensions maybe needed.)
Input Voltage
Current Draw Max.
120VAC, 60Hz
.02A
24VAC, 60Hz/24VDC
.02A
12VDC
.03A
WALL PORTION
2 13/16”
70mm
2 ½”
64mm
4 5/8”
117mm
Step 2: Install the Magnet
A. See Fig. 3. Connect the supply earth ground wire to the green wire on the magnet bracket assembly. Connect
the power supply common wire to the screw terminal marked COM. If the supply voltage is 24V, connect the
power supply hot wire to the screw terminal marked 24V. If the supply voltage is 120V, connect the power
supply hot wire to the screw terminal marked 120V. If the supply voltage is 12V, connect the power supply
hot wire to the screw terminal marked 12V. Polarity is important on the 12V input. There are protective plastic
tabs over the terminal screws. Break off the two tabs that protect COM and the desired voltage so that the
screw heads are exposed.
B. See Fig. 2. With the magnet wired, position the magnet bracket assembly into the surface mount box and
attach it to the box using the (4) 10-24 shorter screws from step 1A. Tighten firmly. Attach the cover housing
using the (2) 10-24 longer screws from step 1A.
COM
24V
120V
12V
Earth Ground
Back view of magnet assembly
Fig. 3
Surface
Conduit
Knock out
Fig. 2
Surface
Mount Box
Magnet
Bracket
Assembly
Cover
28
30
32
34
36
38
40
42
44
46
48
2
26
28
30
32
34
36
38
40
42
44
46
4
26
28
30
32
34
36
38
40
42
44
46
6
26
28
30
32
34
36
38
40
42
44
46
8
25 11/16
27 11/16
29 3/4
31 3/4
33 3/4
35 13/16
37 13/16
39 13/16
41 13/16
43 13/16
45 7/8
10
25 1/4
27 1/4
29 5/16
31 3/8
33 7/16
35 1/2
37 1/2
39 1/2
41 9/16
43 5/8
45 5/8
12
24 9/16
26 11/16
28 3/4
30 7/8
33
35
37
39 1/8
41 3/16
43 1/4
45 1/4
14
23 11/16
26
28
30 1/4
32 3/8
34 7/16
36 1/2
38 5/8
40 11/16
42 3/4
44 13/16
16
22 11/16
25
27 1/4
29 7/16
31 9/16
33 3/4
35 7/8
38
40
42 3/16
44 5/16
18
21 3/8
23 13/16
26 1/8
28 7/16
30 11/16
32 7/8
35
37 1/4
39 3/8
41 1/2
43 5/8
20
19 13/16
22 3/8
24 7/8
27 1/4
29 5/8
31 7/8
34 1/8
36 3/8
38 9/16
40 3/4
43
22
20 11/16
23 3/8
25 7/8
28 3/8
30 3/4
33
35 3/8
37 5/8
39 7/8
42
24
24 1/4
26 7/8
29 3/8
31 13/16
34 1/4
36 1/2
38 13/16
41
26
27 13/16
30 3/8
32 7/8
35 5/16
37 11/16
40
28
31 3/8
33 7/8
36 3/8
38 3/4
30
29 5/8
32 5/16
34 7/8
37 3/8
32
33 1/4
35 13/16
A
=
D
im
e
n
s
io
n
o
f
d
o
o
r
ja
m
b
to
w
a
ll
(I
n
c
h
)
Nearest Whole
Number
B = dimension of door width (Inch)
Magnetic Door Holder Placement Chart
7830
Table 1