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Fontana Commercial Sensor Faucets™ | Architectural and Engineering Resource

Fontana FS-354AQ-DP Antique Commercial Automatic Sensor Faucet: Water Supply & Plumbing Connection Diagram

This water-supply and plumbing-connection resource supports architects, plumbing engineers, specifiers, contractors, installers and facility teams coordinating the Fontana FS-354AQ-DP commercial automatic sensor faucet. The diagram establishes the complete hydraulic path from the building water supply through the isolation valve, flexible supply hose and control-box inlet to the faucet outlet connection. It also illustrates the optional hot-and-cold mixing arrangement, sensor-cable routing, service-access requirements and principal plumbing and electrical connection criteria.

Fontana FS-354AQ-DP Water-Supply Connection System

The Fontana FS-354AQ-DP uses a below-deck water-control arrangement in which the building supply is connected through an accessible isolation valve and flexible inlet hose to the electronic control box / solenoid module. From the control-box outlet, a second flexible hose supplies the faucet body above the deck. Where tempered water is required, an optional below-deck mixing valve can combine the hot and cold building supplies before the mixed-water line enters the control assembly.

  • Model: FS-354AQ-DP
  • Fixture type: Commercial automatic sensor faucet
  • Installation: Deck mounted
  • Primary supply connection: G1/2 in (DN15)
  • Connection equivalent: 1/2-inch connection
  • Primary hydraulic configuration: Single building water supply to control-box inlet
  • Faucet connection: Flexible outlet hose from control box to faucet body
  • Isolation: Accessible angle stop / shut-off valve required
  • Optional water treatment: Strainer or service filter
  • Optional temperature control: Below-deck hot/cold mixing valve
  • Working pressure: 0.05–1.6 MPa (7.3–232 psi)
  • Power: DC 6V (4 × AA) or AC 110–220V, 50/60Hz
  • Control component: Control box / solenoid module
  • Sensor connection: Sensor cable routed from faucet to control box
  • Service requirement: Keep control box, isolation valves and hose connections accessible
Product Page Installation Guide

Required Water-Supply & Plumbing Connection Drawing Package

The plumbing drawing should clearly establish the complete water path from the building supply to the faucet and identify every accessible service and control component. The connection sequence should distinguish the building supply, isolation valve, optional strainer, flexible inlet hose, control-box inlet, solenoid-controlled outlet, flexible faucet hose and faucet body. Where tempered water is required, the hot and cold branches and optional mixing valve should be shown as a separate configuration before the mixed-water supply enters the control box.

Water Supply & Plumbing Connection Diagram

Shows the complete hydraulic arrangement serving the FS-354AQ-DP, from the building water supply through the isolation and control components to the faucet body. The drawing also identifies hose routing, sensor connection, service clearances and the optional hot/cold mixing configuration.

Building Water Supply

The primary supply arrangement begins with a G1/2 in (DN15) building water connection. The supply piping should terminate at an accessible isolation point before the flexible hose connects the building system to the electronic control module.

Angle Stop / Isolation Valve

An accessible angle stop or shut-off valve is required between the building supply and faucet-control assembly. The valve provides a local means of isolating the faucet during installation, commissioning, inspection or service.

Flexible Supply Hose

A compatible flexible inlet hose connects the isolated building water supply to the control-box inlet. The hose should be routed without kinking, twisting, excessive tension or contact with sharp edges and moving components.

Control Box / Solenoid Module

The below-deck control box contains the water-control assembly serving the automatic faucet. Water enters through the designated inlet and exits through the controlled outlet after automatic activation commands are received from the faucet sensor.

Control-Box Outlet to Faucet

The control-box outlet connects to the faucet body through a separate flexible hose. This establishes the final controlled water path from the solenoid module to the above-deck faucet and terminal outlet.

Sensor Cable Routing

The faucet sensor cable is routed below the countertop to the electronic control box. Maintain separation from sharp edges and moving components and provide sufficient slack for installation and service without placing strain on the electrical connectors.

Optional Hot / Cold Mixing

Where tempered water is required, independent hot and cold G1/2 (DN15) building supplies can feed an optional below-deck mixing valve. The mixed-water outlet then continues through the flexible supply hose to the control-box inlet before flowing to the faucet.

Working Pressure & Power

The plumbing and electrical requirements shown identify a working-pressure range of 0.05–1.6 MPa (7.3–232 psi) and power options of DC 6V using four AA batteries or AC 110–220V at 50/60Hz.

Engineering note: The plumbing connection drawing is schematic and should not be scaled. Verify the G1/2 / DN15 building connection, available working pressure, isolation-valve locations, flexible-hose compatibility, control-box inlet and outlet orientation, optional mixing-valve configuration, sensor-cable routing and service clearances before final installation.

Plumbing Coordination & Service Considerations

Supply Isolation

Provide an accessible shut-off valve on the building water supply so the faucet and control system can be isolated without shutting down unrelated plumbing fixtures.

Supply-Line Flushing

Flush debris from the building supply piping before making the final faucet connections. Keep contaminants from entering the flexible hoses, control-box waterway or solenoid assembly.

Hose Routing

Route the inlet and outlet flexible hoses without kinks, twists or excessive bends. Support the lines so their weight or movement does not impose unnecessary strain on fittings or control-box connections.

Control-Box Accessibility

Locate the control / solenoid module where its water, electrical and sensor connections remain accessible after the lavatory, countertop and surrounding casework have been completed.

Hot & Cold Isolation

When an optional mixing valve is used, provide independent isolation for both the hot and cold branches so either supply can be serviced without disturbing the permanent building distribution system.

Leak Testing

After installation, inspect all threaded fittings, flexible-hose connections, control-box connections and optional mixing-valve joints for leakage before the installation is placed into regular service.

Water-Supply Components & Connection Sequence

1. Faucet Body The above-deck FS-354AQ-DP faucet assembly receives controlled water from the outlet hose and contains the sensor-operated fixture outlet. 2. Outlet Hose to Faucet The flexible outlet hose connects the control-box outlet to the faucet body and forms the final hydraulic link between the solenoid-controlled module and fixture. 3. Inlet Flexible Hose The supply-side flexible hose carries water from the isolated building supply or optional mixing valve to the designated control-box inlet. 4. Sensor Cable The electronic sensor cable links the faucet detection assembly with the below-deck control module and should remain accessible and protected from physical damage. 5. Control Box / Solenoid Module The control module receives sensor input and controls the water path between the supply-side inlet and faucet-side outlet. 6. Angle Stop / Shut-Off Valve The required local isolation valve allows the faucet assembly to be shut off for installation, inspection, maintenance or component replacement. 7. Optional Mixing Valve Where tempered water is required, the below-deck mixing valve combines separately isolated hot and cold supplies before the mixed-water line enters the faucet control system. 8. Supply Fittings & Adapters Use compatible plumbing fittings and adapters to transition between the building distribution system, isolation devices, flexible hoses and faucet-control components.

Plumbing Configuration Requirements

  • Single Cold-Water Supply The basic configuration routes the G1/2 (DN15) building supply through an angle stop / isolation valve and flexible supply hose to the control-box inlet. Water then leaves the control-box outlet through a second flexible hose to the faucet.
  • Optional Tempered-Water Supply Where mixed water is required, separately isolated G1/2 (DN15) hot and cold building supplies feed a below-deck mixing valve. Its mixed outlet then feeds the faucet-control assembly.
  • Optional Strainer / Service Filter The schematic identifies an optional strainer or service filter in the supply path. Where incorporated, maintain adequate clearance so the component can be inspected or serviced without removing surrounding plumbing.
  • Service Access Area Keep the under-counter area around the control box, shut-off valves, electrical connections and flexible hose fittings clear for commissioning, maintenance and future component replacement.
  • Flow Path The normal hydraulic sequence is: building supply → isolation valve → flexible inlet hose → control-box inlet → control-box outlet → flexible outlet hose → faucet body.

Project verification: The water-supply and plumbing-connection diagram is a coordination resource and should not be scaled. Before installation, verify the G1/2 / DN15 supply connection, available 0.05–1.6 MPa (7.3–232 psi) working pressure, isolation-valve locations, flexible-hose compatibility, control-box inlet and outlet orientation, sensor-cable routing, power configuration, optional strainer, optional hot/cold mixing arrangement and required under-deck service access against the approved product documentation and actual project plumbing conditions.