Lathem manual DDC2 Double Mount Ceiling

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Digital Display Wall Clock Guide

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DDC2 (Double Mount - Ceiling)

Note: Make sure you have at least 10 1/2" of side clearance on one side in order to remove the lens and circuit board assembly.

»Remove the four phillips head screws from the left and the right end caps of the two DDC2 clocks and remove. Slide the lenses and circuit board assemblies out of the cases and set aside.

»Place the two DDC2 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 DDC2 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 DDC2 clock.

»Line the two posts from the mounting plate up with the vent holes of the DDC2 clocks. Insert the chase nipples through the vent holes and secure to the mounting plate with a 15/16" wrench.

»Slide the circuit board assemblies in partially. Secure the required wiring and install the battery if used.

»Slide the circuit board assemblies in fully along with the lenses. Install the end caps and secure each with its four screws.

Note: When mounting DDC2 clocks, the short side of the mounting plate must be parallel to the long side of the clocks

#10 hex nuts

chase nipple

#10 lock washers

mounting plate

DDC2 cases

 

chase nipple

#10 lock washers

#10 screws

 

Figure 6

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Contents Installation & Users Guide Lathem Time Corporation Table of Contents Page Page Page Introduction Clock OperationAbout this Manual Optional Accessories DDC-TCPage Configuring the DDC Series Wall Clock Setting the DIP Switches DDC2 / DDC4 SeriesDIP Switch Settings Configuring RS485 Communications DDC2/4-RS Series Battery Usage DDC2 / DDC4 SeriesDDC2/4-RS / DDC2/4-RS-24 Battery Installation DDC2 / DDC4 Series Power Cord Installation DDC2/4-RSWiring Installation DDC2/4-RS Series Secondary WiringRS485 Wiring DDC-TC WiringBoard Layout Diagram Replacing an Existing DDC4 Wall ClockMounting DDC2 / DDC4 Series Mounting to a WallMounting 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 Setting the Time Time FormatsAppendix a DDC2-RS / 4-RS Secondary Clock Wiring Diagrams BLKStand-Alone 115VAC Wire Synchronous 115VAC WHTWire Synchronous 24VAC Correction GrndAC RTN BLK BRN / WHT BLU / WHTWire minute Impulse 59th Minute Grnd BLKYEL / WHT VIO / WHT BRN / WHT Wire Minute Impulse 59th Minute With 12 Hour Correction BLK YEL / WHT VIO / WHT BRN / WHTStandard Electric Synchronous Standard Electric AR-2A 2-Wire Dual Voltage BLK YELStandard Electric AR-2 2-Wire Dual Voltage Synchronous Wired Simplex 59th Minute Dual Motor Simplex 45th Minute Dual Motor Edwards Dual Motor Standard Electric AR-3 3-Wire Minute Impulse BLK YEL / WHT VIO / WHT BRN/ WHTNational Synchronous Wired Stromberg Synchronous Wired 56th Minute Common Cincinnati D1VIO Cincinnati D6, EdwardsWire Pulse Alternating 24VDC Grnd AC RTN BLK VIO / WHT YEL / WHTGrnd AC in AC RTN BLK BLU Electronic CodedGrnd AC AC RTN BLK BLU Straight FrequencyWire Minute Impulse 58th Minute Wire Minute Impulse 44th Minute Wire Reverse Polarity Minute Impulse 59th Minute VIO / WHT YEL / WHTAppendix B DDC2-RS-24 / DDC4-RS-24 Wiring DDC2-RS-24 / DDC4-RS-24 Wiring Appendix C RS485 Wiring Diagrams RS485 Data FormatOMC GNDJP4 Omcii to DDC2-RS / 4-RSBLK H LTR0 to DDC2-RS / 4-RS+ of JP4 LTR4 / 8-512 to DDC2-RS / 4-RSAppendix D DDC-TC Timer Control Panel WiringInstallation Timer ControlOperation As a Count Up Timer As a Count Down TimerAppendix E LTR-GPS Satellite Receiver / Clock Synchronizer LTR-0Page Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock Appendix F Specifications DDC2 / DDC4Appendix G Warranty Limited One-Year Limited Warranty
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