Home > Solenoid Valve and Control-Box Installation Layout

Fontana Commercial Sensor Faucets™ | Architectural and Engineering Resource

Fontana FS-354AQ-DP Antique Commercial Automatic Sensor Faucet: Solenoid Valve and Control-Box Installation Layout

This solenoid-valve and control-box installation resource supports architects, plumbing engineers, specifiers, contractors, installers and facility teams coordinating the below-counter components of the Fontana FS-354AQ-DP commercial automatic sensor faucet. The layout identifies the vertically mounted solenoid valve, electronic control box, sensor cable, faucet water connection, building water inlet, optional AC power adapter, mounting clearances and minimum service-access zone required for installation, inspection and component replacement.

FS-354AQ-DP Sensor Faucet Control Assembly

The FS-354AQ-DP installation combines a deck-mounted automatic sensor faucet with an under-counter solenoid valve and separate electronic control box. The faucet sensor cable passes below the mounting surface to the electronic controller, while the water supply connects through the solenoid valve before continuing to the faucet. The solenoid assembly is installed vertically with the coil positioned upward, and all serviceable components should remain accessible after the lavatory installation is complete.

  • Model: FS-354AQ-DP
  • Fixture type: Commercial automatic sensor faucet
  • Installation: Deck mounted
  • Finish: Antique brass
  • Construction: Solid brass
  • Solenoid installation: Vertical mount with coil up
  • Control-box installation: Vertical wall / cabinet mounting below counter
  • Water inlet: 1/2 in NPT (G1/2)
  • Water outlet to faucet: 1/2 in NPT (G1/2)
  • Sensor cable: Pre-attached and waterproof
  • Inlet water pressure: 20–80 PSI (138–552 kPa)
  • Water temperature: 1–60°C (34–140°F)
  • Water flow: 1.2 GPM (4.54 L/min) at 60 PSI
  • Sensor range: Adjustable 16–32 cm (6.30–12.60 in)
  • Power: DC 6V (4 × AA) or AC 110–220V, 50/60Hz
  • Minimum service-access zone: 300 mm (11.81 in)
Product Page Installation Guide

Required Solenoid Valve & Control-Box Installation Drawing Package

The installation drawing should identify the relationship between the deck-mounted faucet and all below-counter control components. The solenoid valve should be shown vertically with its coil upward, the electronic control box should remain accessible for electrical service, and the pre-attached sensor cable should route from the faucet to the controller without strain. Water inlet and outlet connections, power routing, mounting-surface limitations and required service clearances should be coordinated before final installation.

Solenoid Valve & Control-Box Installation Layout

Shows the complete under-counter arrangement serving the FS-354AQ-DP automatic faucet, including the faucet body, pre-attached sensor cable, vertical solenoid valve, electronic control box, building water inlet, faucet water outlet, optional AC adapter and required service-access zone.

Typical Under-Counter Installation

The front installation view establishes the relative positions of the solenoid valve, electronic control box and associated water and electrical connections below the countertop. Components should be arranged so inspection and replacement can occur without removing the faucet or lavatory.

Vertical Solenoid Orientation

The solenoid-valve assembly is installed vertically with the electrical coil positioned upward. The diagram permits horizontal water flow through the valve in either direction while maintaining the specified vertical coil orientation.

Electronic Control-Box Position

The electronic control box is mounted vertically below the countertop in a protected and accessible location. Keep the enclosure away from direct water spray, excessive heat and conditions that could interfere with electrical connections or routine servicing.

Water Inlet to Solenoid

The building water supply connects to the solenoid-valve inlet using the identified 1/2 in NPT (G1/2) connection. The supply line should be flushed before connection so debris does not enter the solenoid assembly.

Water Outlet to Faucet

The controlled water outlet from the solenoid assembly connects to the faucet through the 1/2 in NPT (G1/2) faucet-side connection. The outlet line should remain free of kinks, excessive bends and mechanical strain.

Sensor-Cable Routing

The waterproof sensor cable is pre-attached to the faucet and passes below the mounting surface through the faucet assembly. Route the cable to the electronic control box without pinching, stretching or placing it against sharp edges.

Power-Supply Connection

The control system supports a DC 6V battery configuration using four AA batteries or an AC 110–220V, 50/60Hz connection through the supplied power adapter. Electrical connections should remain protected and serviceable.

Service-Access Zone

The installation layout identifies a minimum 300 mm (11.81 in) clear service zone in front of the below-counter components. Preserve this access for inspection, electrical testing, solenoid servicing and component replacement.

Engineering note: The solenoid valve and control-box installation drawing is a coordination resource and should not be scaled. Maintain the solenoid vertically with the coil upward, protect the control box from water and excessive heat, preserve the identified service clearances and verify all plumbing and electrical connections before placing the faucet into service.

Installation & Mounting Coordination Considerations

Above-Deck Clearance

The diagram identifies a minimum 150 mm (5.91 in) above-deck clearance for proper faucet installation, operation and access around the fixture.

Side Clearance

Maintain a minimum 100 mm (3.94 in) side clearance from adjacent vertical construction where indicated so the faucet and related components remain accessible.

Mounting-Surface Thickness

The connection-detail drawing identifies a maximum mounting-surface thickness of 30 mm (1.18 in). Verify countertop thickness before installing the threaded faucet shank, lock nut and washer.

Solenoid Position

Mount the solenoid valve vertically with its coil upward. Do not rotate the assembly into an orientation that places the coil below or horizontally beside the valve body.

Control-Box Protection

Install the electronic control box in a dry under-counter location protected from direct spray, standing water and excessive heat while retaining access to its wiring and power connections.

Service Accessibility

Provide at least 300 mm (11.81 in) of clear working space in front of the under-counter components so the solenoid, controller, connections and power components can be inspected and serviced.

Solenoid & Control-System Components

Automatic Sensor Faucet One FS-354AQ-DP deck-mounted automatic faucet assembly with integrated spout and pre-attached sensor connection. Solenoid Valve Assembly One below-counter solenoid-valve assembly installed vertically with the coil upward to control the faucet's automatic water delivery. Electronic Control Box One electronic controller installed below the countertop in an accessible, protected location for sensor and power-system coordination. Pre-Attached Sensor Cable The waterproof sensor cable is pre-attached to the faucet and routes below the deck to the electronic control system. AC Power Adapter / Cable The supplied adapter supports the AC 110–220V, 50/60Hz power configuration where AC operation is selected instead of the DC battery arrangement. Mounting Hardware Kit The faucet mounting assembly includes the hardware required to secure the threaded faucet shank to the mounting surface.

Technical Installation Requirements

  • Water-Supply Operating Range The installation diagram identifies an inlet-pressure range of 20–80 PSI (138–552 kPa), with a water-temperature range of 1–60°C (34–140°F).
  • Water-Flow Performance The stated faucet flow is 1.2 GPM (4.54 L/min) at 60 PSI.
  • Adjustable Sensor Range The automatic sensor has an adjustable sensing range of 16–32 cm (6.30–12.60 in).
  • Power Configuration The control system supports DC 6V power using four AA batteries or AC 110–220V at 50/60Hz through the supplied adapter.
  • Inlet & Outlet Connections Both the water inlet to the solenoid and water outlet toward the faucet are identified as 1/2 in NPT (G1/2) connections.
  • Solenoid Orientation Install the solenoid valve vertically with the coil upward. The diagram indicates that water flow through the valve can be horizontal in either direction.
  • Pre-Installation Flushing Flush the building supply line before connecting the solenoid valve to reduce the possibility of debris entering the valve and affecting operation.
  • Leak Verification Ensure plumbing connections are secure and leak-free before commissioning the automatic faucet system.

Project verification: The solenoid valve and control-box installation layout is a coordination resource and should not be scaled. Before installation, verify the 1/2 in NPT (G1/2) inlet and outlet connections, 20–80 PSI operating-pressure range, 1–60°C water-temperature range, 1.2 GPM flow at 60 PSI, 16–32 cm adjustable sensor range, 30 mm maximum mounting-surface thickness, 150 mm above-deck clearance, 100 mm side clearance, 300 mm minimum service-access zone, vertical solenoid orientation, sensor-cable routing, electronic control-box location and selected DC or AC power arrangement against the approved project installation requirements.