Lathem DDC2-RS Installation & User Manual

Also see for DDC2 Series: Installation and user guide

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Lathem DDC2-RS Installation & User Manual Manual pdf 15 page image

Page 9 Digital Display Wall Clock GuideAC Return) Attach the ground wire of the cord (normally green) to the green ground screw located on theinside back of the case. Slide the lens and circuit board assembly back into the case, replace the end capand secure with the four phillips head screws.DDC4-RSRemove the two phillips head screws from the left or the right end cap and remove. Slide the front panelassembly out of the case. Carefully flip the front panel assembly over and lay it face down on a clean,smooth work surface. Remove one of the vent caps from the case of the wall clock and route the powercord through it to the back of the display panel. (If the power cord will be routed through the back-of-the-clock conduit access, route the cord through the gang box and conduit access hole to the back of the circuitboard assembly). Strip away 1/2" of the protective shield from each wire of the power cord. Locate the twoblack wires leading from J1 (see figure 2, page 9) and attach the AC In line of the cord to one and the ACReturn line to the other (normally black is AC In and white is AC Return). Attach the ground wire of thecord, (normally green) to the green ground screw located on the inside back of the case. Slide the frontpanel display back into the case, replace the end cap and secure with the two phillips head screws.Wiring Installation - DDC2/4-RS SeriesSecondary WiringThe DDC Wall Clock comes with a detachable wiring harness to make installation easier. The wiringharness can be removed from the back of the main circuit board at position J1 as shown in figure 2 sowiring from the master clock can be attached to the wiring harness with the clock's Electronic Assemblyremoved. The leads from the wiring harness should be connected as shown in the diagrams in Appendix A.RS485 WiringThe DDC Wall Clock comes with a detachable wiring block to make installation easier. The wiring blockcan be removed from the back of the main circuit board at position JP4 as shown in figure 2 so wiring fromthe master clock can be attached without the need of holding the Wall Clock itself. Wiring should beconnected as shown in the diagrams in Appendix C.DDC-TC WiringThe DDC Wall Clock comes with a detachable wiring block to make installation easier. The wiring blockcan be removed from the back of the main circuit board at position JP2 as shown in figure 2 so wiring fromthe Timer Control Panel can be attached without the need of holding the Wall Clock itself. Wiring shouldbe connected as shown in the diagrams in Appendix D.