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Fontana Brio PrimeSense™ Line FS-1095GMG Gun Metal Gray Touchless Bathroom Faucet: Rough-In Installation Drawing

This rough-in installation drawing resource is intended to support architects, plumbing engineers, electrical engineers, interior designers, countertop fabricators, millwork contractors, installers and facility managers coordinating the Fontana Brio PrimeSense™ Line FS-1095GMG deck-mounted touchless bathroom faucet within commercial washrooms. The drawing identifies the required countertop opening, faucet mounting centerline, water-supply arrangement, motorized valve position, electronic controller location, infrared sensor cable path, AC or battery power arrangement, basin relationship and maintenance clearances that should be established before countertop fabrication and final installation.

Fontana Brio PrimeSense™ Line FS-1095GMG Touchless Bathroom Faucet

The Fontana FS-1095GMG is a commercial touchless bathroom faucet constructed from solid brass and finished in architectural Gun Metal Gray. The visible faucet body and infrared sensing assembly remain above the finished countertop while the mounting shank, water connections, motorized valve, electronic controller, power components and associated cabling are coordinated below the lavatory deck.

  • Model: FS-1095GMG
  • Product type: Touchless bathroom faucet
  • Installation: Deck mounted
  • Mounting configuration: Single hole
  • Operation: Infrared sensor activation
  • Material: Solid brass
  • Finish: Gun Metal Gray
  • Sensor range: Field adjustable
  • Water connection: Standard 1/2-inch plumbing
  • Power: AC or battery configuration
  • Flow rate: 1.2 GPM at 60 PSI
  • Pressure range: 0.05–0.8 MPa
  • Application: Commercial and institutional washrooms
Product Page Installation Guide

Rough-In Installation Drawing Scope

The rough-in drawing should present the complete relationship between the visible faucet, finished countertop, lavatory basin, cabinet enclosure, water-supply connections, motorized valve, electronic controller, power source and sensor wiring. Reference dimensions should be taken from the finished countertop surface, faucet mounting centerline, basin centerline, cabinet floor and nearby plumbing components. Only verified manufacturer dimensions should be included in final construction documents.

Complete Rough-In Elevation

Shows the faucet above the finished countertop and all concealed equipment below. The elevation should identify the lavatory basin, mounting shank, water connections, motorized valve, controller, power source, sensor cable and required maintenance-access zone.

Faucet Mounting Centerline

Identifies the faucet centerline in relation to the basin, backsplash and counter edge. The outlet should discharge within the basin’s effective capture area without contacting the basin rim or producing excessive splash.

Single-Hole Countertop Opening

Indicates the verified faucet mounting-hole diameter and location. The opening should be coordinated with sink cutouts, countertop seams, undermount clips, reinforcing rails, backsplash construction and adjacent accessory openings.

Countertop Thickness

Shows the permitted finished-deck thickness and the threaded shank length required below the counter for the gasket, washer and retaining nut. Additional substrate or reinforcement layers should not prevent secure mounting.

Faucet Spout Projection

Shows the faucet outlet in relation to the basin rim and drain centerline. Spout placement should direct the water stream into the usable basin area while limiting splash onto the countertop or user.

Sensor Detection Zone

Identifies the adjustable infrared sensing field below the faucet outlet. The sensing zone should remain clear of the backsplash, basin wall, drain fitting and reflective accessories that could cause false activation.

Under-Counter Cabinet Envelope

Defines the available cabinet width, depth and height for concealed faucet components. The arrangement should account for the basin, drain, trap, water supplies, shutoff valves, cabinet doors, shelves and structural framing.

Water-Supply Stub-Outs

Shows the required water-supply connection points below the lavatory. Supply stub-outs should remain accessible and should be positioned to avoid sharp hose bends, tension, compression and interference with the drain assembly.

Isolation Valve Position

Identifies accessible shutoff valves serving the faucet. The valves should permit individual fixture isolation for commissioning, maintenance and component replacement without shutting down unrelated washroom fixtures.

Motorized Valve Location

Shows the electronically controlled valve installed between the water supply and faucet inlet. The valve should be supported, protected from impact and located where its connections remain accessible for testing and replacement.

Controller Position

Identifies a dry and accessible mounting location for the electronic control module. The controller should remain within the approved cable reach of the faucet sensor, motorized valve and power supply.

AC Power-Supply Location

Where AC operation is selected, the drawing should show the approved transformer, adapter or power connection in a dry and serviceable location separated from plumbing joints and potential leakage points.

Battery Box Location

Where battery operation is selected, the battery enclosure should be mounted above the cabinet floor and positioned so batteries can be inspected and replaced without removing the basin or disconnecting plumbing.

Electrical Receptacle Coordination

If a receptacle is required, its location should be coordinated with the electrical drawings and locally adopted requirements. It should not conflict with the trap, shutoff valves, cabinet shelves or maintenance access.

Sensor Cable Route

Shows the low-voltage cable path from the faucet sensor to the controller. The cable should be supported and kept clear of cabinet hinges, drawer slides, sharp metal edges, water piping and removable access panels.

Valve-Control Cable Route

Identifies the electrical connection between the controller and motorized valve. Connectors should remain visible and reachable for commissioning, diagnostic testing and future component replacement.

Flexible Supply-Hose Route

Shows the route between the shutoff valve, motorized valve and faucet inlet. Hoses should follow smooth curves and should not be twisted, kinked, stretched or pressed against the basin or cabinet structure.

Drain and Supply Separation

Coordinates the faucet components with the lavatory drain and trap. Electronic components and wiring should not rest against drainage piping or obstruct access to slip joints, cleanouts or shutoff valves.

Minimum Service Height

Defines the vertical clearance required to access the controller, motorized valve, power components and faucet mounting nut. The service zone should remain unobstructed after all plumbing and millwork are installed.

Minimum Service Depth

Indicates the horizontal clearance needed to inspect and remove concealed components. The cabinet should permit equipment to be withdrawn through the normal access opening without removing the countertop.

Front Access Zone

Shows the clear working area required in front of the controller, valve and water connections. Cabinet doors or removable panels should permit normal servicing without dismantling permanent millwork.

Cabinet Floor Clearance

Shows electronic components raised above the lowest cabinet level where practical. Controllers, adapters, connectors and battery enclosures should be protected from cleaning water, leaks and standing moisture.

Basin Reflection Clearance

Identifies the relationship between the infrared sensor and reflective basin surfaces. Highly reflective finishes should be reviewed during commissioning so they do not remain continuously within the active detection field.

Finished Rough-In Arrangement

Presents the coordinated layout after the basin, countertop, plumbing, electrical and millwork components have been considered. All components should remain organized, labelled and accessible for future maintenance.

Engineering note: Rough-in dimensions must not be based on estimated product measurements. Confirm the mounting-hole diameter, allowable countertop thickness, hose lengths, cable reach, controller dimensions, valve orientation and power requirements from the approved FontanaShowers specification sheet or project submittal before countertop fabrication.

Required Rough-In Drawing Views

Front Lavatory Elevation

Show the faucet centerline, finished countertop, lavatory basin, controller, motorized valve, power source, water supplies, drain and front service-access zone.

Side Cabinet Section

Show the faucet body, spout projection, countertop, mounting shank, basin, flexible supply route, controller and available cabinet depth.

Countertop Plan View

Show the single faucet opening, sink cutout, backsplash, counter edges, basin centerline and minimum horizontal separation from adjacent fixtures and accessories.

Under-Counter Plan View

Show the basin footprint, drain, trap, shutoff valves, motorized valve, controller, power source and all water-hose and cable routes.

Mounting-Hole Detail

Show the verified opening diameter, countertop thickness, faucet base, sealing gasket, threaded shank, washer, retaining nut and mounting centerline.

Hydraulic Connection Diagram

Show the building supply, isolation valve, inlet hose, motorized valve, outlet hose and faucet connection in the correct direction of water flow.

Electrical Connection Diagram

Show the faucet sensor, electronic controller, motorized valve, transformer or battery box, cable connectors and approved power source.

Sensor Commissioning View

Show the intended hand-detection zone and its relationship to the basin, backsplash and water-stream landing point for final sensor adjustment.

Recommended Rough-In Installation Sequence

1. Review Approved Submittals

Confirm the final model, finish, faucet dimensions, power configuration, valve arrangement and installation accessories before preparing the rough-in.

2. Coordinate the Faucet Centerline

Position the mounting centerline so the water stream enters the basin capture area while maintaining suitable clearance from the backsplash and basin rim.

3. Review Under-Counter Conflicts

Check the location against the sink bowl, drain, trap, water supplies, support rails, cabinet partitions, drawers and shelves.

4. Reserve the Equipment Zone

Establish a dedicated area for the motorized valve, controller, power components and cable connections that remains accessible after construction.

5. Install Water-Supply Stub-Outs

Provide accessible water supplies and isolation valves in locations that permit direct connection without sharply bending or stretching the flexible hoses.

6. Coordinate Electrical Power

Provide the selected AC source or battery-access arrangement in a dry, serviceable location consistent with the project electrical drawings.

7. Prepare the Countertop Opening

Transfer the verified single-hole mounting requirement to the countertop shop drawings and confirm the finished opening is correctly located.

8. Install Support Components

Provide suitable mounting surfaces or brackets for the controller, valve and cable management without blocking access to plumbing connections.

9. Route Hoses and Cables

Keep water hoses and wiring organized, supported and separated from sharp edges, moving hardware, heat sources and potential leak areas.

10. Verify Service Access

Confirm the controller, motorized valve, power components, connectors, shutoff valves and faucet mounting hardware remain reachable.

11. Flush the Water Supply

Flush the supply piping before connecting the faucet valve assembly so construction debris does not enter the motorized valve, filter or outlet.

12. Inspect Before Final Installation

Complete a rough-in inspection before installing permanent shelves, drawers, doors or panels that could obstruct the faucet system.

Architectural and MEP Coordination Considerations

Lavatory Coordination

The faucet outlet should discharge within the basin while the sensor field remains clear of surfaces that could trigger unintended activation.

Countertop Coordination

Countertop seams, reinforcing members, sink clips and substrate build-up should not conflict with the faucet shank or mounting hardware.

Millwork Coordination

Cabinet partitions, shelves, drawers and reinforcing rails should not block the controller, valve, power components or required service opening.

Plumbing Coordination

Maintain access to the trap, isolation valves, water connections and motorized valve while protecting electronic components from potential leaks.

Electrical Coordination

Confirm the approved AC or battery configuration, transformer arrangement, receptacle location and separation between electrical and plumbing components.

Maintenance Coordination

Provide sufficient access for valve cleaning, filter inspection, battery replacement, connector testing and controller replacement.

Accessibility Coordination

Coordinate the faucet location, sensor activation zone, lavatory height, knee clearance and clear floor space with applicable accessibility requirements.

Splash-Control Coordination

Review the basin depth, drain position, spout projection and operating pressure so the water stream does not produce excessive splash during use.

Sensor and Hydraulic Commissioning Requirements

Sensor-Range Adjustment

Adjust the infrared detection field to recognize normal hand movement without sensing the basin, backsplash, mirror edge or nearby restroom accessories.

Multiple-Angle Activation Test

Test activation from the front and both sides of the basin to confirm the faucet responds consistently throughout the intended user approach.

False-Trigger Test

Observe the faucet with the basin empty and verify that reflective surfaces, moving doors, lighting conditions or nearby fixtures do not trigger unintended flow.

Water-Stream Alignment

Confirm the stream enters the basin’s capture area without striking the drain directly or contacting a steep basin surface that could cause splash.

Pressure and Leak Test

Pressurize the system and inspect all hose, valve and faucet connections. Correct leakage before energizing or commissioning the electronic components.

Automatic Shut-Off Test

Remove hands from the detection zone and confirm flow stops promptly. Also verify the safety timeout interrupts extended or continuous activation.

Power-Failure Test

Verify the selected power configuration and confirm all electrical connectors are secure, dry and accessible for future diagnostic service.

Final Functional Test

Complete repeated activation cycles to confirm stable sensor response, consistent flow, prompt shut-off and acceptable splash performance.

Rough-In Component Identification

  • Touchless faucet body: Visible deck-mounted solid-brass component containing the outlet and infrared sensor assembly.
  • Infrared sensor: Detects the user’s hands and sends an activation signal to the electronic controller.
  • Countertop gasket: Sealing component positioned between the faucet base and finished countertop.
  • Threaded mounting shank: Passes through the single countertop opening and supports the underside mounting hardware.
  • Mounting washer and retaining nut: Secure the faucet body to the underside of the finished countertop.
  • Flexible inlet hose: Transfers water between the isolation valve, motorized valve and faucet inlet.
  • Isolation valve: Permits the faucet to be shut down independently for maintenance or component replacement.
  • Motorized valve: Controls water flow in response to electronic signals from the controller.
  • Electronic controller: Receives the sensor signal and manages faucet activation, shut-off and safety timing.
  • Sensor cable: Connects the faucet’s infrared sensing assembly to the electronic controller.
  • Valve-control cable: Connects the controller to the motorized water-control valve.
  • AC power adapter or transformer: Provides approved electrical power where the hardwired operating option is selected.
  • Battery enclosure: Holds the specified batteries where battery-powered operation is selected.
  • Cable clips: Support low-voltage wiring and keep it clear of plumbing, cabinet hardware and sharp surfaces.
  • Service-access opening: Provides access for commissioning, leak inspection, battery replacement, filter cleaning and electronic servicing.

FontanaShowers Installation and Specification Resources

FS-1095GMG Product Page Product information, technical characteristics and available documentation for the Fontana Brio PrimeSense™ Gun Metal Gray touchless faucet. Specification Sheet Request Request verified product dimensions, hydraulic information, power requirements and project-specific technical documentation. Installation Instructions Installation and project-support resource for faucet mounting, plumbing connections, electrical coordination and commissioning. FontanaShowers Installation Hub Central installation resource for touchless faucets, commercial bathroom fixtures and related plumbing systems.

Professional Engineering and Accessibility References

Project verification: This rough-in installation drawing resource is intended for coordination and does not replace an approved project submittal. The architect, plumbing engineer, electrical engineer, countertop fabricator, millwork contractor and licensed installer should verify final dimensions, countertop construction, basin compatibility, mounting-hole requirements, water-supply arrangement, operating pressure, valve orientation, cable lengths, power requirements, sensor commissioning criteria, accessibility requirements and locally adopted codes before fabrication or installation.