The suitability of each route and parking arrangement depends on the approved layout, circulation, ceiling interfaces and operating sequence. It is to confirm which drawings actually govern the overhead route, the ceiling interface, and the coordination points where building services such as PIR sensors meet the partition track. For EBUNGE movable partitions, panels are individually movable, suspended from a top track, and cross the opening without a floor track. That means the ceiling zone becomes the critical design area. This article explains what drawings you should request, what they must show, and how to coordinate with ceiling-mounted PIR sensor flush trim rings without assuming hidden performance.
Why the Ceiling Zone Drives Partition Track Drawings
Because EBUNGE movable wall panels are top-hung and travel without a floor track, the overhead structure carries the entire system. The track route must be continuous and supported along every path the panels travel. In an office meeting suite, the ceiling often contains lighting, HVAC diffusers, sprinklers, and PIR sensors.

Drawings must show the track alignment in plan and section, including how it interacts with ceiling-mounted devices. The flush trim ring of a PIR sensor is not just a finishing detail; it indicates a penetration or mounting point in the ceiling. If the track runs directly beneath or beside that point, the drawings must clarify clearances and support brackets.
Key Drawings for Partition Track Coordination
Several drawing types are essential for specifying the partition track at a PIR sensor flush trim ring. Each serves a distinct purpose in the procurement and installation process.
Reflected Ceiling Plan (RCP)
The RCP is the primary drawing for ceiling-mounted elements. It shows the track route as a dashed or solid line, the location of the PIR sensor, and the flush trim ring’s diameter. The RCP must align with the architectural plan to confirm that the track follows the intended partition line. For EBUNGE systems, the track may include straight, turning, and stacking routes, all of which must be visible on the RCP. The stacking position—where panels park when not in use—must also be indicated, as it may influence ceiling layout and sensor placement.
Section Drawings at the Sensor Location
Share the opening dimensions, room layout and intended operating sequence for review.
A section cut through the ceiling at the PIR sensor location is critical. It shows the vertical relationship between the track, the ceiling tile or drywall, and the sensor body. The flush trim ring sits flush with the ceiling surface, but the sensor housing extends above. The section must confirm that the track does not interfere with the sensor housing or its mounting bracket. It also shows the support structure for the track—whether it is anchored to the slab or suspended from the deck—and how that structure avoids the sensor’s electrical box.
Track Route and Stacking Diagrams
EBUNGE movable partitions require a planned stacking position. Drawings must show how panels park, whether in a straight line or a compact stack, and how that stacking area relates to the PIR sensor. If the sensor is located in the stacking zone, its detection pattern may be blocked when panels are parked. The drawings should indicate the stacking envelope and any required clearances. This is not a performance claim; it is a spatial coordination issue that must be resolved in the drawings.
Coordination with Ceiling-Mounted PIR Sensors
PIR sensors detect motion by sensing changes in infrared radiation. A flush trim ring provides a clean aesthetic but does not change the sensor’s detection zone. When a partition track is added, the track itself may obstruct the sensor’s view if placed directly below it. The drawings must show the sensor’s location relative to the track and any panels in the open or closed position. This is a matter of sightlines and physical obstruction, not sensor sensitivity. Project teams should confirm the sensor’s specified detection range and angle from the manufacturer’s data, but the drawings must ensure no physical interference.
The exact overhead route and support arrangement must be confirmed by the responsible project team from coordinated drawings. Alternatively, the sensor may be relocated to a position that does not conflict with the track. The drawings must document the chosen approach. A flush trim ring may be part of a sensor that is recessed into the ceiling, meaning the sensor’s lens is nearly flush with the ceiling plane. In that case, the track running below could cast shadows or block the lens’s field of view. The section drawing should show the sensor’s lens angle and the track’s position to verify that the sensor can still ‘see’ the intended area.
What Project Information Is Required
To produce accurate partition track drawings, the project team must provide specific information. EBUNGE’s project documentation can be discussed, but the following items are typically required:
- Architectural floor plans showing the meeting suite layout, including door openings, columns, and fixed elements.
- Reflected ceiling plans with all ceiling-mounted devices, including PIR sensors, lighting, and HVAC diffusers.
- Ceiling sections and details showing the ceiling construction type, height, and any bulkheads or soffits.
- Electrical drawings showing the location of sensor wiring and junction boxes.
- HVAC and sprinkler drawings to identify potential conflicts with track routing.
This information allows the design team to review the track route, turning and stacking paths, and any required coordination with the PIR sensor flush trim ring. Without these drawings, any specification is incomplete.
Reviewing Straight, Turning, and Stacking Routes

EBUNGE movable partitions can follow straight, turning, and stacking routes, but each path must be reviewed from the layout. The drawings must show the entire route from the open position to the stacking position. At a PIR sensor location, the route may need to curve or turn. The exact route, junction arrangement, continuous overhead path and parking position must be confirmed from the coordinated project drawings. The stacking area must be large enough to accommodate the number of panels, and the drawings must show the stacking envelope. If the sensor is near the stacking area, the drawings must confirm that the parked panels do not block the sensor’s view of the room.
The track must be continuous and supported along the entire route. Any gap in the track would prevent panel movement. The drawings must show that the track is continuous through the sensor zone, even if the sensor is relocated or the track is offset.
Finish Options and Their Impact on Drawings
Review the ceiling interface, panel route and stacking position together.
EBUNGE offers finish options including laminate, melamine, fabric, leather, glass, and other approved surfaces. However, the drawings for the track at the PIR sensor location are primarily concerned with the track profile and its relationship to the ceiling. The finish is specified separately on elevation drawings. Still, the project team must confirm that the chosen finish is compatible with the intended use and that the panel dimensions are accounted for in the track layout.
Pass-Door Requirements
If the meeting suite partition includes a pass-door, the drawings must show the door location and its swing. A pass-door within a movable partition can affect the stacking route and the track layout. The PIR sensor may need to be positioned to avoid the door swing. The drawings must coordinate the door’s operation with the sensor’s detection zone. This is a practical coordination issue that must be resolved in the drawings.
Acoustic Considerations in Drawings
They are laboratory or field measurements that depend on the entire assembly, including the partition, seals, and surrounding structure. The track drawings at the PIR sensor location may include seal details, but the sensor penetration itself can be a flanking path. The drawings should show how the sensor is sealed or isolated to minimize sound leakage, but this is a design detail that must be confirmed.
Project Documentation and Support
EBUNGE provides project documentation that can be discussed during the procurement process. This documentation may include typical details, installation guidelines, and coordination checklists. However, each project is unique, and the drawings must be reviewed in the context of the specific site conditions. Do not assume that a generic drawing applies to your situation. The track route, stacking position, and sensor coordination must be confirmed for your project.
FAQ
What drawings are needed for partition track coordination with PIR sensors?
You need a reflected ceiling plan, section drawings at the sensor location, and track route/stacking diagrams. These show the track alignment, ceiling interface, and sensor placement.
Can a PIR sensor be relocated to avoid track conflict?
Yes, relocation is possible, but it must be coordinated with the electrical drawings and the sensor’s detection coverage. The project team must confirm the new location does not create blind spots.
Does the flush trim ring affect the track installation?
The flush trim ring itself is a ceiling detail. The track installation must avoid the sensor housing above the ceiling. The section drawing shows the clearance.

How do I know if the track will block the PIR sensor?
Review the section drawing showing the sensor’s lens angle and the track’s position. If the track is directly below the sensor, it may obstruct the view. The drawings should show a clear line of sight.
What project information must I provide to EBUNGE for drawing review?
Are acoustic ratings guaranteed by the drawings?
No.
Conclusion
Specifying an office meeting suite partition track at a ceiling-mounted PIR sensor flush trim ring requires careful drawing review. Contact EBUNGE to discuss your project and obtain the necessary documentation.
Contact EBUNGE for project-specific support and to review your partition track drawings.
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