Assa 62, 82, 34 Double Door Mounting, Steel Header Filled with Concrete or Wood Frame Mounting

Rev. A.3, 5/00 Page- 9

FIG. 9: STRIKE INSTALLATION ON 100% GLASS DOOR

2 X RUBBER WASHERS

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1/4" X 3/4"

ROLL PINS

ADHESIVE BOND

NOTE: OMIT ROLL PIN WHITE PLASTIC BUSHINGS

5/16-18 x 1" (US) OR 8MM - 1.25MM X 25MM (METRIC)

FLATHEAD SCREW

WHITE PLASTIC

BUSHING

2.5.4 DOUBLE DOOR MOUNTING

Several possibilities exist for this application. In some cases, one of the door leaves is pinned so that only one leaf is used and this is secured by a single Magnalock. If both leaves are to be active, two Magnalocks can be used. For the most attractive installation, they should be butted together but if obstructions exist in the header that interfere with mounting, the magnets can be separated somewhat. Another possibility is to use Securitron's split strike which is available for the model 62 and model 82 (use of a split strike with the model 32 or 34 series would provide inadequate security) In this method, a single Magnalock is mounted in the center of the header and a half size strike is mounted on each leaf. This reduces the holding force to about 550 lbs. (250 KG) for each leaf with the model 62 and about 850 lbs. (385 KG) for each leaf with the model 82. The split strike (part number ASS-62 or ASS-82with “M” suffix for metric) is available either as part of a complete Magnalock or supplied separately as a replacement for the standard strike. Read section 2.7 for information on Dress Covers which improve the appearance of a double door installation. Certain electronic considerations also apply when Magnalocks are used on double doors. See section 3.5.4.

2.5.5 STEEL HEADER FILLED WITH CONCRETE OR WOOD FRAME MOUNTING

Securitron offers a combined bracket in three versions to suit the three Magnalock families. The part number of the “Concrete/Wood Bracket” is CWB-32,CWB-62 or CWB-82. Two finishes are available (suffix CL or BK) and for metric locks, the brackets include the suffix “M”. Note that the CWB bracket is not offered with the model 34. It’s functions are accomplished by the UMB bracket for the model 34.

In concrete filled headers, the blind nuts function normally but a problem can occur in pulling the hook up wires as it is difficult to run a wireway in concrete. The center of the bracket for the model 62 and model 82 versions forms a splice chamber if it's difficult to pull the wires back into the header. The model 32 version has a slot to bring the wire into the header because of the narrowness of the lock. Alternately the wires may be pulled through the edge of the bracket by drilling a hole if it's impractical to drill the concrete. A final technique for concrete headers is the use of Securitron's "G" version Magnalock (not available in the 32 or 34 series) which incorporates a 1/2" female/-3/4" male universal threaded conduit fitting. The conduit fitting is placed on the end of the magnet body, and the problem of pulling wires into concrete is bypassed as the wires may be run in pipe in a surface mount configuration. The mounting holes on "G" locks are counter-bored from both sides to make the lock non-handed.

With a wooden frame, long wood screws are used to mount the Magnalock. The screws must penetrate as deeply as possible through the stop and frame into the header to yield adequate mounting strength. The Magnalock mounts to the bracket via machine screws and the bracket permits wood screws (furnished) to penetrate deeply into the header (see Figure 10)