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Fontana Commercial Sensor Faucets™ | Architectural and Engineering Resource

Fontana FS-354AQ-DP Antique Commercial Automatic Sensor Faucet: Deck-Mount Rough-In & Countertop Installation Layout

This deck-mount rough-in and countertop installation resource supports architects, plumbing engineers, specifiers, countertop fabricators, contractors and installers coordinating the Fontana FS-354AQ-DP commercial automatic sensor faucet. The installation layout identifies the required countertop opening, maximum countertop thickness, faucet and basin centerline relationship, threaded mounting assembly, below-deck hose and sensor-cable routing, control-box position, water connection, power supply and service-access requirements.

Fontana FS-354AQ-DP Deck-Mount Installation Assembly

The Fontana FS-354AQ-DP is a deck-mounted commercial automatic sensor faucet with an antique brass finish and brass body. The rough-in arrangement combines the exposed faucet assembly above the finished countertop with a threaded mounting stem, sealing and fastening hardware, sensor cable, flexible water hose and electronic control module below the deck. Proper coordination of these components is required before countertop drilling, plumbing connection and final fixture installation.

  • Model: FS-354AQ-DP
  • Installation: Deck mounted
  • Fixture type: Commercial automatic sensor faucet
  • Finish: Antique brass
  • Body: Brass construction
  • Required mounting hole: Ø32–35 mm (1.26–1.38 in)
  • Maximum countertop thickness: 35 mm (1.38 in) without deck plate
  • Recommended backsplash clearance: Minimum 100 mm (3.94 in)
  • Approximate faucet height shown: 210 mm (8.27 in)
  • Horizontal spout projection shown: 150 mm (5.91 in)
  • Outlet height shown: 120 mm (4.72 in)
  • Water connection: G1/2 in (DN15)
  • Power: DC 6V (4 × AA) or AC 110–220V, 50/60Hz
  • Detection zone: Approximately 25 cm (10 in), factory set
  • Required under-deck feed-through: Minimum 19 mm (3/4 in) for sensor cable and flexible hose
Product Page Installation Guide

Required Deck-Mount Rough-In & Installation Drawing Package

The installation drawing should establish the faucet centerline relative to the lavatory basin, the countertop opening required for the threaded mounting stem, the permitted countertop thickness and the complete below-deck mounting and control assembly. Routing space should also be reserved for the sensor cable, flexible water connection and power/control module so that installation, adjustment and future servicing can be performed without removing the countertop or basin.

Deck-Mount Rough-In & Countertop Installation

Shows the complete relationship between the exposed faucet, countertop, lavatory basin, mounting opening, threaded stem, fastening hardware, flexible water hose, sensor cable and control module. This drawing serves as the principal reference for countertop fabrication and under-deck coordination.

Faucet & Basin Centerline

The front elevation aligns the faucet centerline with the center of the lavatory basin. Maintaining this relationship helps position the outlet over the usable bowl area and provides a clear geometric reference for countertop drilling.

Mounting-Hole Requirement

The countertop requires a pre-drilled mounting opening between Ø32 mm and Ø35 mm (1.26–1.38 in). The opening should be accurately located on the faucet centerline before the countertop is installed or final plumbing connections are completed.

Maximum Countertop Thickness

The installation layout identifies a maximum countertop thickness of 35 mm (1.38 in) when the faucet is installed without a deck plate. Countertop material and finished thickness should therefore be verified before drilling.

Backsplash & Wall Clearance

The front-view layout identifies a recommended minimum clearance of 100 mm (3.94 in) between the faucet installation zone and the backsplash or adjacent wall. This clearance supports installation, operation and service accessibility.

Mounting Hardware Stack

Below the countertop, the faucet is secured using the threaded mounting stem together with the O-ring, rubber washer, metal washer and mounting nut with locking bolts. The hardware should remain square to the mounting surface while the fastening assembly is tightened.

Sensor Cable & Water Hose Routing

The sensor cable and flexible water hose pass through the countertop assembly into the service zone below the lavatory. A minimum 19 mm (3/4 in) feed-through space is identified for routing these components without sharp bends, compression or interference.

Control Box / Power Module

The electronic control box is installed below the countertop where it can connect to the faucet sensor, water line and electrical supply while remaining accessible for commissioning, battery replacement and future service.

Plumbing & Electrical Requirements

The installation layout identifies G1/2 in (DN15) plumbing connections and either a DC 6V battery supply using four AA batteries or an AC 110–220V, 50/60Hz power arrangement. Coordinate the selected power configuration before installation.

Engineering note: Do not scale the installation drawing. Confirm the Ø32–35 mm mounting-hole diameter, 35 mm maximum countertop thickness, 100 mm recommended backsplash clearance, faucet-to-basin centerline, under-deck clearances, mounting hardware sequence, G1/2 supply connection and electrical configuration before countertop fabrication or final installation.

Deck-Mount Installation Coordination Considerations

Basin Centerline

Center the faucet on the lavatory basin so the spout and water outlet remain aligned with the bowl’s usable capture area and drain centerline where appropriate.

Countertop Fabrication

Verify the countertop material, finished thickness, mounting-hole location and Ø32–35 mm opening before drilling. Confirm that sufficient material remains around the opening to support the faucet assembly.

Mounting-Hardware Access

Keep the area directly below the faucet clear so the O-ring, washers, mounting nut and locking bolts can be installed, tightened and serviced without interference from the basin or surrounding cabinetry.

Hose & Cable Routing

Route the flexible water hose and sensor cable with sufficient space to prevent kinking, crushing or excessive bending. Maintain the required feed-through clearance below the deck.

Control-Box Access

Locate the electronic control box where the enclosure, cable connections, water connections and battery compartment remain accessible after the lavatory and surrounding casework are complete.

Supply & Shut-Off Access

Maintain service access to the G1/2 water connection, control components and any associated shut-off valves. Do not conceal required service points behind permanently fixed construction.

Installation Components & Service Requirements

FS-354AQ-DP Faucet Body The principal above-deck fixture assembly incorporating the antique brass faucet body, curved spout, aerator, sensor window and round escutcheon base. Mounting Hardware Assembly Installation stack consisting of the O-ring, rubber washer, metal washer and mounting nut with locking bolts used to secure the faucet beneath the countertop. Sensor Cable Routing The sensor cable passes below the countertop from the faucet assembly to the electronic control module and should be routed without compression or sharp bends. Flexible Water Connection The flexible water hose links the faucet assembly with the below-deck control and supply components while remaining accessible for inspection and maintenance. Control / Power Module The below-deck control assembly manages sensor input, power and water actuation and should be installed where service access remains available. Complete Installation Guide Reference documentation for faucet mounting, plumbing connections, sensor and power components, installation sequence and final system commissioning.

Pre-Installation & Installation Requirements

  • Countertop Opening Provide a Ø32–35 mm (1.26–1.38 in) pre-drilled mounting hole at the coordinated faucet centerline. Verify the location against the basin before fabrication.
  • Countertop Thickness Without a deck plate, the installation layout identifies a maximum countertop thickness of 35 mm (1.38 in). Confirm the final material build-up before installation.
  • Recommended Tools The installation drawing identifies a drill, 32–35 mm hole saw or drill bit, Phillips screwdriver, adjustable wrench, measuring tape, level and silicone sealant as recommended installation tools.
  • Supply Preparation Flush the water lines before making the final faucet connection and verify that the selected plumbing configuration is compatible with the G1/2 / DN15 connection shown.
  • Service Access Provide adequate below-deck access for mounting hardware, battery replacement, control-box servicing, flexible water connections and sensor-cable connections.

Project verification: The deck-mount rough-in and countertop installation drawing is a coordination resource and should not be scaled. Before countertop fabrication or installation, verify the Ø32–35 mm mounting opening, 35 mm maximum countertop thickness without deck plate, minimum 100 mm recommended backsplash clearance, faucet and basin centerline, mounting-hardware stack, minimum 19 mm feed-through clearance, G1/2 / DN15 water connection, selected DC or AC power arrangement, control-box location, sensor-cable routing, flexible hose routing and under-deck service access against the approved product documentation and actual project conditions.