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EM 508 Series

Dorma EM 508 Series Installation Instructions Manual

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Page 1
Installation Instructions for Surface Wall Mount Electromagnetic Door
Holders Catalog Series EM 508 24120
Description
The EM 508 Series are surface wall mount door holders for use with single doors. All are UL and cUL Listed and FM approved.
Installation
T able 1. Specifications
Cat. No. Volts Amps
EM 508 24120 24V AC 60 Hz 0.015
24V DC 0.015
120V AC 60 Hz 0.015
Electromagnet Assembly Mounting
1. Refer to Figure 4. If not using surface metal raceway (not supplied), secure the acrylic insulating sleeve (provided) to the hole in the surface housing with the #8-32 x 3/16" screw provided.
center
line
Door
Y
Door jamb
Outlet box
Wall line
X
Z
Figure 1. Locating the Door Holder
1. Using Figure 1 and Table 2, locate the intersection of Dimension X and Dimension Y. Dimension Z is shown at the intersection in the gray area.
NOTE: If dimension X or Y is not shown on the chart,
extrapolate Dimension Z. (i.e., if X=7, and Y=30, Z = (27-5/8 - ((27-5/8 - 27-1/4)/2)) => Z = 27-9/16" )
2. Mount the surface housing (supplied) vertically on the horizontal center line and 5" from the top of the door with two 1/4-20 x 1" screws (provided).
NOTE: The outlet box must be able to withstand a maximum
holding force of 50 pounds.
If X and Y intersect in the blank area in Table 2, DO NOT install the outlet box. The contact plate and electromagnet cannot be aligned with these dimensions.
WARNING
To prevent electrical shock, ensure power is discon­nected.
2 . Pull field wiring through conduit into the surface housing. If
surface metal raceway (not supplied) is being used, the required size is 1/2" wide x 11/32" high. The raceway will seat 1/4" into the surface housing. Wiring should be run through the acrylic insulating sleeve where applicable.
3. Establish earth-ground continuity in accordance with applicable codes, standards and authorities having jurisdiction.
4 . Refer to Figure 2 and connect as instructed below:
a. 120V AC operation. Connect power field wiring to
terminals marked "120V AC" and "COM."
b. 24V AC/DC operation. Connect power field wiring to
terminals marked "24V AC/DC" and "COM."
5. Mount the connected assembly onto the surface housing and secure it with (2) #10-32 x 7/8" screws (supplied).
NOTE: The combined projection of the surface housing,
electromagnet assembly, and the armature assembly is 4 1/16".
Table 2. Dimension chart (in inches (mm))
28 30 32 34 36 38 40 42 44 46 48
2
26 (660) 28 (711) 29 7/8 (759 ) 32 (813) 34 (864) 36 (914) 38 (965) 40 (1016) 42 (1067) 43 7/8 (1114) 45 5/8 (1159)
4
26 (660) 28 (711) 29 7/8 (759 ) 32 (813) 34 (864) 36 (914) 38 (965) 40 (1016) 42 (1067) 43 7/8 (1114) 45 5/8 (1159)
6
25 5/8 (651) 27 5/8 (702) 29 5/8 (752) 31 3/4 (806) 33 3/4 (857) 35 3/4 (908) 37 3/4 (959) 39 3/4 (1010) 41 3/4 (1060) 43 5/8 (1108) 45 3/8 (1153)
8
25 1/4 (641) 27 1/4 (692) 29 1/4 (743) 31 3/8 (797) 33 1/2 (851) 35 1/2 (902) 37 3/8 (949) 39 1/2 (1003) 41 1/2 (1054) 43 3/8 (1102) 45 1/4 (1149)
10
24 5/8 (625) 26 3/4 (679) 28 3/4 (730) 30 7/8 (784) 33 (838) 35 (889) 37 (940) 39 1/8 (994) 41 1/8 (1045) 43 (1092) 44 7/8 (1140)
12
23 3/4 (603) 25 7/8 (657) 28 (711) 30 1/8 (765) 32 1/4 (819) 34 3/8 (873) 36 3/8 (924) 38 1/2 (978) 40 5/8 (1032) 42 1/2 (1080) 44 3/8 (1127)
14
23 3/4 (603) 25 (635) 27 1/4 (692) 29 3/8 (746) 31 1/2 (800) 33 3/4 (857) 35 7/8 (911) 38 (965) 40 (1016) 42 (1067) 43 7/8 (1114)
16
21 3/4 (552) 24 (610) 26 1/4 (667) 28 1/2 (724) 30 3/4 (781) 33 (838) 35 1/8 (892) 37 1/4 (946) 39 3/8 (1000) 41 3/8 (1051) 43 3/8 (1102)
18
20 (508) 22 1/2 (572) 25 (635) 27 3/8 (695) 29 3/4 (756) 32 (813) 34 1/4 (870) 36 1/2 (927) 38 5/8 (981) 40 5/8 (1032) 42 1/2 (1080)
20
18 1/4 (463) 21 (533) 23 1/2 (597) 26 (660) 28 1/2 (724) 30 7/8 (784) 33 1/8 (841) 35 3/8 (899) 37 5/8 (956) 39 5/8 (1006) 41 5/8 (1057)
22 24 26 Do not install ou t let box if
X = Dimension of door jamb to wall
28 Dimensions X and Y intersect in this blank area. 30 The armature and electromagnet cann ot be aligned. 32
DORMA Architectural Hardware * Dorma Drive - Drawer AC, Reamstown, PA 17567
18 3/4 (476) 21 5/8 (549) 24 3/8 (619) 27 (686) 29 3/8 (746) 31 3/4 (806) 34 1/8 (867) 36 1/2 (927) 38 5/8 (981) 40 3/4 (1035)
22 1/2 (572) 25 1/2 (648) 28 1/8 (714) 30 5/8 (778) 33 1/8 (841) 35 5/8 (905) 37 7/8 (962) 40 (1016)
Y = Dimension of door width
26 1/4 (667) 29 (737) 31 5/8 (803) 34 1/4 (870) 36 1/2 (927) 38 5/8 (981)
29 3/4 (756) 32 1/2 (826) 34 7/8 (886) 37 1/8 (943) 27 3/4 (705) 30 5/8 (778) 33 (838) 35 3/8 (899)
31 3/8 (797) 33 7/8 (860)
P/N 3101128 ISSUE 1 © 2006
501-1012DE-1-01
Page 2
TOP
VIEW
Top of
door
2 5/8" (67 mm)
approx.
Armature
(base view)
FRONT
120V AC 24V AC/DCCOM
VIEW
Figure 2. T erminal Block
Armature Assembly Mounting NOTE: Armature assembly must be mounted vertically
(Figure 3) to obtain correct alignment with the electromagnet.
1 . Using a 5/32" Allen wrench, turn the contact plate adjusting
screw (Figures 5 and 6) counterclockwise to loosen the contact plate.
2 . Place the transfer marking points in the armature mounting
holes (Figure 3).
3 . To locate the two mounting holes in the door , hold the contact
plate centered against the magnet, open the door and press against the transfer marking points on the armature base. Release the door and remove the transfer marking Points.
4. Mount the armature assembly using one of the following methods:
a. Thru-bolt mounting (Figure 5). Center punch the two
holes (at the points marked in step 3) and drill 5/16" diameter through the door. Distance between the center points should equal 1 3/4".
NOTE: Thru-bolt mounting is recommended for standard
1 3/4" hollow metal, hollow core or composite type wood doors.
Secure the armature assembly, with the contact plate adjust screw facing down, to the door as shown in Figure 5 using (2) #1/4-20 x 2" screws (supplied)
NOTE: For 2" doors, use (2) 1/4-20 x 2-1/4" bolts.
2 3/8"
(60 mm)
1 11/16" (43 mm)
5" (127 mm)
approx.
Lock edge of door
2 Transfer points
Mounting holes
Figure 3. Mounting the Armature Assembly
points for 1/8" holes drilled 1/2" on center equidistant from each marked point. Center punch the holes and drill 1/8" diameter x 1 1/4" deep. Install the concealed mounting plate using the two #10 x 1 1/2" screws provided.
NOTE: Surface concealed mounting is not recommended for
hollow metal, hollow core, or composite type wood doors.
Align the holes for the concealed mounting plate in the armature base with the pins on the concealed mounting plat. Secure the armature assembly, with the contact plate adjust screw facing down, to the door by tightening the set screw as shown in Figure 6.
5. Align the contact plate against the electromagnet. The
contact plate must be centered and lie flat against the magnet to ensure sufficient holding force. Tighten the contact plate adjusting screw until the plate is firm but not set. Do not
overtighten the contact plate.
6 . Recheck alignment and adjust if necessary.
7. Adjust the door closer to exert 3 pounds of force when the door is open and armature and magnet are in contact.
8 . Check operation.
NOTE: The unit will not operate without electrical power.
b. Surface concealed mounting (Figure 6). Measure two
2 Holes for
2 Holes for mounting
1 Hole for securing field wiring protector
GND
Acrylic Insulating Sleeve
mounting housing to wall
magnet assembly to housing
Ground wire connection
Field wiring entrance hole
Figure 4. Surface Housing
Door Plate
1 3/4"
DOOR
(2) #1/4-20 x 2" screws provided
for a standard
1 3/4" door
1 5/8"
Contact plate
adjusting screw
2" from floor to center
Armature
(base view)
Mounting holes
1/2"
Concealed
Door
mounting plate
Contact plate
Contact plate adjusting screw
Two #10 x 1 1/2"
screws (supplied)
1/2"
Set screw. Tighten with 6/32" Allen wrench to secure armature onto mounting plate.
Figure 6. Surface Concealed Mounting
Armature
(base view)
Holes for concealed mounting plate
Figure 5. Thru-Bolt Mounting
P/N 3101128 ISSUE 1 501-1012DE-1-01
EM508 PAGE 2
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