Tork LDSH Manuals

TORK Lighting Reactivation Switch Model: LDSH, LDSH-A INSTALLATION AND USER’S GUIDE FUNCTION & DESCRIPTION The Lighting Delay Switch is an accessory to any TORK maintained contact time switch and is used to extend the time on of lighting, HVAC, and other main building loads after the time switch turns OFF. An auxiliary contact closes, turning on a user select- ed signal device (i.e. bell, horn, light, or other warn- ing device), which turns off at the end of the user selected 4 second, 1 minute or 5 minute period. Remote momentary ON/OFF push button switch- es can be connected to the designated terminal of the Lighting Delay Switch using low voltage #18 - 22 AWG twisted pair wires. Pressing the remote ON button momentarily during a 1 or 5 minute warning period will extend the time on (main load) for a user selectable 1/2 hour, 1 hour, 1-1/2 hour, 2 hours, 6 hours, 9 hours, or 12 hours. At the end of the extended time the user selected signal device will again turn on, allowing personnel to repeat another 1/2 - 12 hour extension of the main load if necessary. Pressing the remote OFF button for 3 to 4 seconds will terminate the extension of time for the main load, and turn on the auxiliary warning circuit. The warning circuit will turn OFF after the 4 second, 1 minute or 5 minute period. The main load will turn off after 1 or 5 minutes (user selectable). When starting up after a power failure (if time switch is not ON), the main load will be turned ON for 10 minutes. At the end of the 10 minute period, the warning circuit will turn on. The main load will remain ON for the 1 or 5 minute warning period. If an extension of time is required for the main load, press the remote ON button momentarily. The auxiliary warning circuit will turn off, and the main load will remain on for an additional 1/2 - 12 hour extension of time. This unit is ideally suited to meet Energy Conservation construction codes relative to con- trolled lighting after hours and assures building loads will go OFF after personnel (i.e. cleaning- staff working after hours) leave the building. NOTE: 1. Multiple remote momentary push buttons may be wired to the same terminals for access from dif- ferent locations. 2. The Lighting Delay Switch can be operated as a stand alone control using remote ON/OFF momentary push-buttons. 3. If time of day control is also required, see wiring diagram for time switch interface. A. Pressing the remote ON momentary push-but- ton while the time switch is ON will start the internal timer of the Lighting Delay Switch, but will have no immediate impact on the main load. When the time switch turns OFF, the load will remain ON for the duration left on the LDSH. B. Pressing the remote OFF push button for 3 to 4 seconds while the time switch is ON will termi- nate the internal timer of the Lighting Delay Switch, but will have no impact on the main load which will remain ON. When the time switch turns OFF, the load will turn OFF after the warning period. INSTALLATION PROCEDURE Step 1: Model LDSH only. Remove the unit from the plastic track. Mount the plastic track with provided hardware only. Do not use other hardware. Snap the unit back into the track. Step 2: Before wiring, power to this unit, the time switch, and the equipment it controls must be turned off at the main panel. Wire the unit according to the appropriate wiring diagrams provided. Be sure to follow local and all other codes. Step 3: Set all switches #1, 2, 3, and 4 to the ON position for test. This will accelerate the complete opera- tion of the unit to under 1 minute, allowing a check of the wiring and the functions. Step 4: Set the extended time delay for the main load to the appropriate time by adjusting switch #1, 2, and 3. See table for desired timing.