Document No. 129-104Installation InstructionsOctober 1, 2013Page 2 of 5 Siemens Industry, Inc.Mounting InformationAlways mount the room unit vertically.Locate the room unit:• according to design specifications and localregulations.• where the air circulates around it freely (not inrecessed areas or behind doors).• allowing a minimum of 4 inches (10 cm) freespace above and below for proper airflow, thefront cover removal tool, and the computercommunication cable.• away from drafts caused by doors, windows,outside walls, air registers, pipes, return airplenums, etc.• away from heat sources such as strong lights,fireplaces, direct sunlight, etc.• on an inside wall (preferably), about 5 feet(1.5 m) above the finished floor.Drywall Mounting (No Rough-in),TypicalBase Plate Mounting and Wiring1. Mark the center (cable) hole and the mounting holelocations, using the room unit base plate as atemplate. See Figure 3.2. Drill two 3/16-inch (4.8 mm) mounting holes andmount the two plastic wall anchors flush to below thewall surface for stable mounting of the device.3. Cut a 1-inch (25 mm) center hole with a hole saw.NOTE: It is recommended that you use theoptional Insulating Gasket on the back ofthe Sensor Base for hollow wallinstallations.When applying the adhesive-backedgasket to the back of the Sensor Base,orient the gasket so that the cut-outarrow portion of the gasket is in theupper lefthand quadrant of the SensorBase. The Sensor Base has an UP arrowmolded into the surface in the samequadrant location (see Figure 6).Figure 2. Insulating Gasket.4. Pull about three inches (75 mm) of the cable throughthe hole in the base plate.5. Mount the room unit base plate on the wall, notingthe UP arrow:NOTE: If required, position the Back Platebehind the Room Unit Base, aligning thetop and bottom mounting holes, prior tomounting to the wall:a. Install the two mounting screws provided, butdo not tighten.b. Level the room unit base plate for appearance.c. Tighten the two mounting screws to the roomunit base plate.6. Cut the cable, leaving about three inches (75 mm)on the room unit side of the drywall. Ensure that pinNumber 1 connects to the same wire at each end ofthe cable.NOTE: See Figure 2 for details on optional Gasketapplication.Figure 3. Drywall Mounting (No Rough-in), Typical.