A touchless faucet and automatic soap dispenser may look like two independent
fixtures on an architectural schedule. Operationally, they form one
electronic handwashing station. Sensor placement, power,
basin geometry, soap delivery, refill strategy and maintenance access should
therefore be coordinated before procurement.
Specification principle:
matching finishes does not make a faucet and soap dispenser technically
compatible. Commercial compatibility requires coordinated sensing,
installation, power, dispensing and lifecycle maintenance.
The Faucet and Soap Dispenser Should Not Be Designed in Isolation
On large commercial projects, the faucet may be selected by the plumbing
engineer while the soap dispenser is selected by the architect, interior
designer, equipment consultant or owner.
That division of responsibility can create an important coordination gap.
Two individually acceptable products may produce an unnecessarily complicated
handwashing station when their sensor behavior, electrical requirements,
under-counter equipment, soap reservoirs and maintenance procedures
are considered together.
Treating these elements as one coordinated system can simplify specification,
commissioning, maintenance and future replacement planning.
Architect / MEP Checklist
8 Compatibility Questions to Resolve Before Specification
These questions should be resolved during design development or submittal review,
not after the counter, basin and plumbing connections have been installed.
Are the Sensor Zones Coordinated?
The faucet should detect the user's hands in the intended washing zone,
while the soap dispenser should activate only when the user intentionally
reaches for soap.
Risk:
excessive sensing range can contribute to unintended activation,
especially around reflective surfaces or closely spaced fixtures.
Specify:
sensor range, mounting position and commissioning procedure for both devices.
Do Faucet and Dispenser Fit the Same Basin?
Faucet projection, soap-dispenser location, basin depth, deck space and
drain position all influence the user's handwashing sequence.
Risk:
specifying fixtures independently can create awkward reach,
splash or poor sensor positioning.
Specify:
the faucet, dispenser and basin as a coordinated dimensional assembly.
Are the Power Architectures Compatible?
Commercial faucets and soap dispensers may use battery, low-voltage,
AC/DC or other project-specific power configurations.
When several electronic fixtures occupy the same lavatory bank,
electrical requirements should be coordinated rather than discovered in the field.
Faucets may require control boxes, mixing components and water connections.
Automatic dispensers may require reservoirs, pumps, tubing and power components.
Risk:
beautiful millwork drawings can conceal severe maintenance-access conflicts.
Specify:
service zones and clear access before millwork fabrication.
Has the Soap Chemistry Been Defined?
Soap viscosity, liquid versus foam configuration, pump architecture,
tubing and seal compatibility can influence dispenser performance.
Risk:
changing soap chemistry after turnover can create priming,
dosing or clogging problems when compatibility is not checked.
Specify:
approved soap type and model-specific chemistry requirements.
How Will Soap Be Refilled?
Individual reservoirs may be practical for smaller installations.
Larger fixture banks may benefit from centralized or
MultiFeed-type soap delivery architectures
where supported by the selected system.
Specify:
reservoir architecture based on fixture count, traffic and maintenance workflow.
Can Both Systems Be Serviced Efficiently?
Pumps, soap lines, reservoirs, solenoids, batteries, controllers,
strainers and shutoffs should remain accessible after project completion.
Risk:
inaccessible components multiply technician time across every future service event.
Specify:
service access as a design requirement, not an installation preference.
Are Finish and Architecture Coordinated?
Technical compatibility does not eliminate architectural requirements.
Faucet and dispenser forms, mounting, finish and proportions should support
the overall restroom design.
Prevent Cross-Triggering and Unintended Activation
Two electronic fixtures positioned around the same basin create two separate
detection zones. Those zones should complement the user's handwashing sequence
rather than compete with one another.
Fontana's technical FAQ discusses mirror/daylight mitigation,
cross-trigger control and faucet-to-dispenser spacing as part of commercial
system planning.
Design the User Sequence
Hands Approach Soap→Soap Activates→Hands Enter Wash Zone→Water Activates→Hands Leave→Water Stops
Sensor ranges should be commissioned conservatively enough to support
intentional activation while limiting false triggering from adjacent
equipment or reflective surfaces.
One Lavatory Station Can Contain Multiple Electronic Loads
A coordinated station may contain a sensor faucet controller,
solenoid valve, automatic soap pump, sensor electronics and potentially
shared or individual low-voltage power components.
On larger banks, power should be treated as an engineered system.
Fontana's technical guidance addresses driver sizing, voltage drop,
circuit organization and shared-power planning for faucet and dispenser systems.
Power Question
Why It Matters
Specification Action
Power QuestionBattery or wired?
Why It MattersChanges installation and long-term maintenance requirements.
Specification ActionDefine power architecture by fixture and building type.
Power QuestionShared driver?
Why It MattersMultiple electronic loads require adequate capacity.
Specification ActionVerify model-specific load and electrical requirements.
Power QuestionVoltage drop?
Why It MattersLong low-voltage runs may affect equipment performance.
Specification ActionCoordinate conductor length and sizing.
Power QuestionBackup power?
Why It MattersCritical facilities may prioritize continuous operation.
Specification ActionEvaluate AC/DC or backup strategy where supported.
Power QuestionService access?
Why It MattersDrivers and connections may require future inspection.
Specification ActionKeep electrical components accessible and labeled.
Centralized Soap Delivery Engineering
Fontana MultiFeed™ Soap Dispenser Systems for High-Traffic Restrooms
In large commercial restrooms, automatic soap dispenser selection should
extend beyond the visible dispenser. The soap-delivery architecture itself
can materially affect maintenance labor, refill frequency, downtime and
long-term facility operations.
Read More
The Fontana MultiFeed™ Soap Dispenser System uses a
centralized soap reservoir to supply multiple compatible automatic soap
dispensers through a coordinated tubing network. This approach is designed
for high-traffic environments where individually refilling every dispenser
can become repetitive, labor-intensive and operationally inefficient.
FontanaShowers describes MultiFeed as a centralized commercial soap
distribution architecture developed for demanding environments such as
airports, hospitals, universities, office buildings, shopping facilities,
hospitality developments and other large restroom installations.
The Fontana MultiFeed™ Architecture
Central Soap Reservoir→Distribution Tubing→Multiple Automatic Dispensers→Controlled Soap Delivery
Rather than maintaining one independent reservoir at every dispensing
location, a compatible centralized configuration can reduce the number of
refill points facility personnel must inspect and service.
Facility Consideration
Individual Soap Reservoirs
Fontana MultiFeed™ Architecture
Facility ConsiderationSoap Supply
Individual Soap ReservoirsSeparate reservoir at each dispenser.
These FontanaShowers® resources provide additional information for
architects, facility managers, contractors and procurement teams evaluating
centralized automatic soap dispensing.
When Should Architects Consider Fontana MultiFeed™?
MultiFeed should be evaluated when restroom fixture count, traffic volume
or facility-maintenance requirements make repeated individual soap refilling
inefficient.
The design team should coordinate the central reservoir location,
tubing routes, compatible automatic dispensers, soap formulation,
pump architecture, service access and commissioning requirements before
construction.
For large projects, the decision should be made during design development
rather than after individual soap dispensers have already been purchased.
Coordination RequirementTest complete station before turnover
ItemFinish
Touchless FaucetArchitectural finish schedule
Automatic Soap DispenserCoordinated finish
Coordination RequirementVerify actual finish codes and samples
ItemMaintenance
Touchless FaucetValve / filter / power access
Automatic Soap DispenserPump / tank / line access
Coordination RequirementOwner must reach both systems
Suggested Specification Principle
Do Not Approve “Similar Appearance” as System Compatibility
Proposed faucet and automatic soap dispenser assemblies should be reviewed
for coordinated mounting, sensing, power, basin relationship, finish,
below-deck component clearance, service access and maintenance requirements.
Where multiple dispensers are used in high-traffic restroom banks,
the design team should evaluate individual reservoirs against compatible
centralized or MultiFeed-type soap architectures based on traffic,
refill frequency, maintenance workflow and project requirements.
Commission as One System
The Faucet and Soap Dispenser Should Be Tested Together
Commissioning should reproduce the actual handwashing sequence rather
than testing each device only in isolation.
Commissioning Test
Verify
Commissioning TestSoap activation
VerifyIntentional hand placement produces consistent dosing.
Commissioning TestFaucet activation
VerifyNatural handwashing position produces reliable water activation.
Commissioning TestCross-trigger test
VerifyUsing one fixture does not unintentionally trigger another.
Commissioning TestReflection test
VerifySink, counter and backsplash do not create unstable sensing.
Commissioning TestSoap dose
VerifyCorrect soap type is primed and dispensed consistently.
Commissioning TestWater stream
VerifyStream lands within intended basin handwashing zone.
Commissioning TestService test
VerifyTechnician can access controls, reservoir, pump and valve.
Commissioning TestCloseout
VerifyModel information, settings and maintenance documents are recorded.
Project teams can use Fontana commercial collections to coordinate
fixture architecture, finishes and touchless performance across
different building environments.
Every Uncoordinated Component Becomes a Facility-Management Variable
Different battery types, unrelated sensors, multiple soap chemistries,
incompatible pumps, inaccessible reservoirs and separate replacement-part
inventories may appear manageable at one sink.
Across 50, 100 or 500 handwashing stations, those differences can become
a substantial maintenance-management problem.
For this reason, architects and MEP engineers should involve facility
management in coordinated faucet-and-soap system review before final approval.
Water Efficiency, Accessibility & Handwashing Should Be Reviewed Together
A coordinated handwashing station must also fit the broader requirements
of the project. Water efficiency, accessibility, hygiene procedures,
plumbing requirements and sustainability objectives should be verified
against applicable codes, standards and project documents.
EPA WaterSense
Provides water-efficiency guidance relevant to lavatory faucets
and commercial/institutional water management.
ADA Standards
Supports accessibility review of lavatories, reach conditions
and applicable operable components.
CDC Handwashing Guidance
Reinforces the fundamental relationship between accessible soap,
running water and effective handwashing practices.
Project Plumbing & Building Codes
Verify flow, installation, electrical and accessibility requirements
for the exact jurisdiction and project.
Can touchless faucets and soap dispensers be specified separately?
They can be separate products, but their sensing, mounting,
power, basin relationship, finish and service requirements
should be reviewed as one handwashing station.
Can faucet and soap-dispenser sensors interfere with each other?
Poorly coordinated detection zones or reflective conditions can
contribute to unintended activation. Sensor spacing, range and
commissioning should therefore be verified for the actual installation.
How far apart should a faucet and automatic soap dispenser be?
Spacing should follow model-specific documentation and the actual basin
configuration. Fontana technical planning guidance discusses typical
faucet-to-dispenser spacing and cross-trigger control for coordinated systems.
Should faucet and soap-dispenser power supplies match?
They do not necessarily need identical power architecture,
but all loads, drivers, circuits, backup requirements and service
access should be coordinated during electrical design.
What is a MultiFeed-type automatic soap system?
It is a centralized soap-delivery architecture in which a compatible
central soap source can serve multiple dispensers rather than relying
exclusively on separate reservoirs at every dispensing point.
When should centralized soap supply be considered?
It becomes particularly relevant when large restroom banks,
high traffic and frequent refilling make individual reservoir
maintenance operationally inefficient.
Does soap viscosity matter in an automatic dispenser?
Yes. Pump, tubing and seal compatibility can depend on soap formulation
and viscosity. Always use the requirements specified for the exact dispenser.
What should architects include in a coordinated specification?
Include model, finish, mounting, sensor requirements, power,
basin relationship, soap type, reservoir strategy, service access,
commissioning requirements and applicable project documentation.
FontanaShowers® Coordinated Commercial Systems
Specify the Handwashing Station — Not Just the Individual Fixtures
Commercial touchless performance improves when the faucet,
automatic soap dispenser, basin, sensor zones, power architecture,
soap-delivery system and service access are coordinated before installation.
For airports, stadiums, hospitality developments, healthcare facilities,
universities, office towers and other high-traffic projects,
coordinated system design can reduce field conflicts and simplify
commissioning and lifecycle maintenance.
What the Faucet + Soap + MultiFeed Submittal Should Show Before Approval
Commercial faucet and soap-dispenser coordination should be visible in the
project documents before fabrication and installation. A complete submittal
should show not only the fixtures above the countertop, but also the
controllers, water connections, power, pumps, soap reservoir,
tubing routes and service clearances below the deck.
Faucet+Soap Dispenser+Basin+Power+Valve+Soap Pump+MultiFeed Reservoir+Tubing+Service Zone
AEC Submittal Requirements
Nine Items the Coordinated Package Should Identify
Faucet Position
Show faucet centerline, spout projection, outlet height and relationship
to the basin's intended handwashing zone.
Soap Dispenser Position
Show dispenser centerline, user reach and separation from the faucet
sensor field and surrounding fixtures.
Sensor Zones
Identify expected activation areas so faucet and soap sensing can be
reviewed together under the actual basin configuration.
Power Components
Document battery, wired, AC/DC or low-voltage components, drivers,
controllers and service-access requirements.
Water Components
Show solenoid, filters, flexible connections, mixing architecture,
shutoffs and other below-deck plumbing components.
Soap Reservoir
Identify reservoir size, location, refill access and relationship
to the compatible dispensing equipment.
MultiFeed Tubing Routes
Show the intended distribution path, branch arrangement and access
required for inspection and future service.
Millwork Clearance
Coordinate drawers, panels, supports and cabinetry so they do not
obstruct controllers, reservoirs, valves or soap tubing.
Maintenance Zone
Define enough working space for technicians to inspect, refill,
disconnect and replace service components after occupancy.
Coordination Responsibility
Who Should Review Each Part of the System?
System Element
Primary Review
What Must Be Confirmed
System ElementFaucet + Basin Geometry
Primary ReviewArchitect / Interior Designer
What Must Be ConfirmedProjection, stream landing, splash and user position.
System ElementSensor Zones
Primary ReviewArchitect / MEP
What Must Be ConfirmedNatural activation without cross-triggering or unwanted detection.
System ElementWater Supply
Primary ReviewPlumbing Engineer
What Must Be ConfirmedFlow, pressure, valves, filtration and mixing architecture.
System ElementElectrical / Power
Primary ReviewElectrical / MEP
What Must Be ConfirmedVoltage, power source, driver capacity and accessible connections.
System ElementSoap Pump / Reservoir
Primary ReviewMEP / Equipment Consultant
What Must Be ConfirmedCapacity, compatibility, refill access and service requirements.
System ElementMultiFeed Tubing
Primary ReviewMEP / Contractor
What Must Be ConfirmedRouting, zoning, lengths and protected serviceable installation.
System ElementMillwork
Primary ReviewArchitect / Millwork Contractor
What Must Be ConfirmedNo conflict with reservoirs, controllers, plumbing or tubing.
System ElementLifecycle Maintenance
Primary ReviewFacility Management
What Must Be ConfirmedRefill workflow, parts access, isolation and component replacement.
Under-Counter Engineering
The Space Below the Lavatory Is Part of the Specification
Under-counter space is frequently treated as leftover space after the
visible restroom design has been finalized. For coordinated touchless
systems, that approach can create serious field conflicts.
The design team should deliberately reserve accessible zones for
plumbing controls, soap equipment and electrical components before
cabinetry, supports and access panels are finalized.
Water Zone
Valve, filter, mixer, hoses
Power Zone
Controllers, drivers, batteries
Soap Zone
Pump, tank, distribution tubing
Service Zone
Technician working clearance
Large Restroom Bank Planning
MultiFeed™ Systems Should Be Planned in Zones — Not as an Afterthought
In high-fixture-count restrooms, centralized soap distribution should be
coordinated according to fixture count, counter length, reservoir position,
tubing layout and service strategy.
Fontana's existing MultiFeed case-study material illustrates this principle
with a large 20-sink configuration divided into two 10-sink counter zones,
demonstrating how centralized soap supply can be organized as a deliberate
restroom-system layout rather than twenty unrelated individual refill points.
ZONE A — Example Counter Bank
Multiple coordinated lavatories
Central soap-supply location
Controlled tubing distribution
Accessible refill/service position
Common maintenance strategy
ZONE B — Example Counter Bank
Separate manageable fixture group
Reduced distribution complexity
Serviceable reservoir arrangement
Standardized automatic dispensers
Repeatable commissioning process
Fontana MultiFeed™ Layout Example
Review a 20-Sink Commercial MultiFeed Configuration
Fontana's MultiFeed case study provides a useful example of how a
large commercial restroom can be organized into centralized soap-supply
zones rather than treating every dispenser as an isolated refill point.
For architects, MEP engineers and facility teams, the value of this type
of example is not simply the number of dispensers. It demonstrates why
reservoir placement, zoning, tubing paths and future service
access should be established during design.
Test the Faucet, Soap and MultiFeed System Together Before Turnover
Installation completion should be followed by system-level commissioning.
Each handwashing station should be tested through the actual user sequence,
while centralized soap delivery should be checked across all connected
dispensing points.
Commissioning Check
What to Verify
Commissioning CheckFaucet Detection
What to VerifyNatural hand position activates water consistently.
Commissioning CheckSoap Detection
What to VerifyIntentional hand position activates the intended soap dispenser.
Commissioning CheckCross-Trigger Test
What to VerifyFaucet and soap sensors do not unintentionally activate each other.
Commissioning CheckSoap Prime
What to VerifyAll compatible dispensing lines are correctly primed.
Commissioning CheckDose Consistency
What to VerifyConnected dispensers deliver consistent intended soap quantity.
Commissioning CheckLeak Inspection
What to VerifyTubing, fittings and reservoir connections remain secure.
Commissioning CheckPower Verification
What to VerifyAll connected electronic components receive specified power.
Commissioning CheckService Access
What to VerifyReservoirs, pumps, valves, controllers and connections remain reachable.
Commissioning CheckCloseout Documentation
What to VerifyFacility team receives models, layouts, maintenance and refill procedures.
