Lathem DDC2 manual DDC4 Double Mount Ceiling

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Digital Display Wall Clock Guide

DDC4 (Double Mount - Ceiling)

Note: Make sure you have at least 16" of side clearance on one side in order to remove the front panel assembly.

»Remove the two phillips head screws from the left and the right end caps of the two DDC4 clocks and remove. Slide the front panel assemblies out of the cases and set aside.

»Place the two DDC4 clocks back to back and secure by inserting a #10 screw through the two key holes and the two lower mounting holes using lock washers and nuts supplied with the mounting kit. Note: At this point, if the DDC4 clocks will be mounted too near a wall on one side to secure the end caps, install the "wall side" end caps now.

»Remove the center vent cap from the top of each DDC4 clock.

»Line the two posts from the mounting plate up with the vent holes of the DDC4 clocks. Insert the chase nipples through the vent holes and secure to the mounting plate with a 15/16" wrench.

»Slide the front panel assemblies in partially. Secure the required wiring and install the battery if used.

»Slide the front panel assemblies in fully. Install the end caps and secure each with its two screws.

Note: When mounting DDC4 clocks, the long side of the mounting plate must be parallel to the long side of the clocks

mounting plate

#10 hex nuts

DDC4 cases

 

chase nipple

chase nipple

#10 screws

#10 lock washers

Figure 7

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Contents Installation & Users Guide Lathem Time Corporation Table of Contents Page Page Page Clock Operation IntroductionAbout this Manual DDC-TC Optional AccessoriesPage Setting the DIP Switches DDC2 / DDC4 Series Configuring the DDC Series Wall ClockDIP Switch Settings Battery Usage DDC2 / DDC4 Series Configuring RS485 Communications DDC2/4-RS SeriesDDC2/4-RS / DDC2/4-RS-24 Power Cord Installation DDC2/4-RS Battery Installation DDC2 / DDC4 SeriesSecondary Wiring Wiring Installation DDC2/4-RS SeriesRS485 Wiring DDC-TC WiringReplacing an Existing DDC4 Wall Clock Board Layout DiagramMounting to a Wall Mounting DDC2 / DDC4 SeriesMounting to a Single Gang Box DDC2 Double Mount Wall DDC2 Double Mount Wall DDC4 Double Mount Wall Double Mount Ceiling DDC2 Double Mount Ceiling DDC4 Double Mount Ceiling Time Formats Setting the TimeGrnd Appendix a DDC2-RS / 4-RS Secondary Clock Wiring DiagramsBLK Stand-Alone 115VACBRN / WHT BLU / WHT Wire Synchronous 115VACGrnd BLK Wire Synchronous 24VACAC RTN BLUYEL / WHT VIO / WHT BRN / WHT Wire minute Impulse 59th MinuteBLK YEL / WHT VIO / WHT BRN / WHT Wire Minute Impulse 59th Minute With 12 Hour CorrectionStandard Electric Synchronous BLK YEL Standard Electric AR-2A 2-Wire Dual VoltageStandard Electric AR-2 2-Wire Dual Voltage Synchronous Wired Simplex 59th Minute Dual Motor Simplex 45th Minute Dual Motor Edwards Dual Motor BLK YEL / WHT VIO / WHT BRN/ WHT Standard Electric AR-3 3-Wire Minute ImpulseNational Synchronous Wired Stromberg Synchronous Wired 56th Minute Cincinnati D1 CommonCincinnati D6, Edwards BLK VIO / WHT YEL / WHTVIO / WHT YEL / WHT Wire Pulse Alternating 24VDCElectronic Coded Grnd AC RTN BLK BLUStraight Frequency Wire Minute Impulse 58th Minute Wire Minute Impulse 44th Minute Wire Reverse Polarity Minute Impulse 59th Minute Appendix B DDC2-RS-24 / DDC4-RS-24 Wiring BLK BRN / WHT BLU / WHT DDC2-RS-24 / DDC4-RS-24 WiringRS485 Data Format Appendix C RS485 Wiring DiagramsGND OMCOmcii to DDC2-RS / 4-RS LTR0 to DDC2-RS / 4-RS BLK HLTR4 / 8-512 to DDC2-RS / 4-RS Terminal # Signal JP4 ConnectionWiring Appendix D DDC-TC Timer Control PanelTimer Control InstallationAs a Count Down Timer Operation As a Count Up TimerDWA-S Appendix E LTR-GPS Satellite Receiver / Clock SynchronizerPage Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock DDC2 / DDC4 Appendix F SpecificationsLimited One-Year Limited Warranty Appendix G Warranty
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