SECO-LARM Magnetic Door Holders (DH-151SQ / DH-171SQ) — Manual

Manual for the SECO-LARM DH-151SQ (surface-mount) and DH-171SQ (flush-mount) Magnetic Door Holders, used with door closers to control the release and closing of residential, commercial, and public area doors.

Features

• For use with door closers to control the release and closing of residential, commercial, and public area doors (apartments, schools, hotels, hospitals, offices)
• Adjustable armature plate reduces installation time and adjusts to door alignment changes
• Surface-mount (DH-151SQ) or flush-mount (DH-171SQ) models available
• Fail-safe operation, low profile design
• Holding force: 33 lb (15kg)
• 3 voltages: 12/24 VAC/VDC, and 120VAC (tri-volt coils)
• Extension bars available: ½", ¾", 1", 2" (13, 19, 25, 50mm)
• Cast aluminum faceplate; no residual magnetism for easy release; built-in voltage spike suppressor
• UL Listed; compatible with SECO-LARM door closers SD-C121-S, SD-131-SQ, SD-C101-SGQ, SD-C101-SBAQ, or SD-C101-SBBQ

Specifications

Parts List

1x door holder, 1x armature plate, 1x back box (DH-151SQ only), 1x manual, 2x jumpers, 2x #10 x 1¼" wood screws, 4x 4x8 machine screws, 2x 3x10 machine screws, 2x 5x15 machine screws.

Available extension bar accessories: DH-100E-05SQ (½"), DH-100E-07SQ (¾"), DH-100E-10SQ (1"), DH-100E-20SQ (2").

Installation

1. Determine the mounting location of both the Magnetic Door Holder and the Armature Plate. Run power wires to that location in compliance with local codes.
2. Select the voltage (two jumpers for 12VAC/VDC, or a single jumper for 24VAC/VDC or 120VAC) and adjust the jumpers accordingly.
3. DH-151SQ (Surface-Mount): Mount the back box at the wire location and connect wires per the wiring diagram; screw the unit onto the back box and test.
4. DH-171SQ (Flush-Mount): Connect wires per the wiring diagram; screw the unit onto the single-gang box and test.
5. Mount the Armature Plate to the door, aligned with the door holder (extension bars available if needed).
6. Double-check all connections and mountings before finishing installation.

Important: The wiring connections must match the voltage jumper settings and the supplied voltage.

Voltage Settings

Set the voltage using the jumpers: 12 VAC/VDC uses two jumpers; 24 VAC/VDC and 120VAC each use a single jumper in a different position. Factory default is 120VAC. To avoid personal injury or product damage, ensure the jumper setting matches both the wiring connections and the supplied voltage — improper settings/wiring will void the warranty, and SECO-LARM will not be responsible for resulting injury.

Warranty

This SECO-LARM product is warranted against defects in material and workmanship for two (2) years from the date of sale to the original customer. SECO-LARM's obligation is limited to repair or replacement of any defective part if the unit is returned, transportation prepaid, to SECO-LARM. This warranty is void if damage results from acts of God, misuse/abuse, neglect, unauthorized repair or alteration, improper usage, or faulty installation.