Technical FAQ — Architects & Commercial Restrooms
IR vs. Time‑of‑Flight (ToF): which sensing tech should I specify?
Infrared (IR) sensors are reliable for most porcelain and matte basins, offering strong immunity to ambient light with low standby power. Time‑of‑Flight (ToF) measures distance directly and can outperform IR in challenging environments—mirrored splashbacks, glossy black lavs, or where cross‑talk from adjacent stations is likely. Our deck models (ArcLinea™, AeroSpan™) support IR with an optional ToF module. For mirror walls or highly reflective finishes, choose ToF or keep IR sensors at least 8–10 inches from reflective planes and maintain parallel centerlines between faucet and dispenser to prevent cross‑activation.
What flow rates do architects typically select for commercial lavatories?
Common specs are 0.5 GPM for commercial lavatories (water‑saving baseline) and 1.0 GPM for higher‑comfort hospitality. For airports and schools, 0.35–0.5 GPM helps meet conservation goals while maintaining hand‑washing efficacy with laminar devices. All faucet families above offer field‑swappable aerators (0.35–1.5 GPM). Pair with thermostatic mixing (ASSE 1070) to maintain safe outlet temps without handles.
Power planning: battery vs. hard‑wired?
Battery‑only (4×AA) simplifies retrofits and keeps install costs down; expect 1–2 years in moderate traffic with alkaline, longer with lithium. For 24/7 venues (airports, stadiums), specify AC with battery backup for uninterrupted service. Consolidate control boxes in accessible cavities, add labeled outlets, and consider dedicated low‑voltage circuits for banks. Our sets support AC primary with automatic battery failover.
How do I prevent sensor cross‑talk between faucet and soap dispenser?
Keep the faucet and dispenser centerlines parallel, not intersecting. Maintain a horizontal offset if components are very close. Avoid aiming sensors directly at each other or at mirror edges. On multi‑station counters, choose models with directional/tri‑window IR (TriAxis™) or ToF modules and use the factory preset ranges. Where needed, specify baffles or adjust sensing distances during commissioning.
What should I know about vandal resistance and IP sealing?
High‑traffic restrooms benefit from reinforced spouts, tamper‑resistant outlet tips, and sealed control boxes with inline strainers. Our TriAxis™ and QuantaFlow™/NovaRail™ lines focus on vandal resistance. For dispensers, choose IP‑sealed cores (HygraCore™) and metal housings (SteelPro™/SS 304) with concealed fasteners. In stadium or transit projects, specify anti‑rotation mounts and thread‑locked aerators.
Soap media, viscosity, and dosing?
Foam dispensers (FoamMaster™, AeroFoam‑X™) use micro‑aeration and work best with foaming soaps at 100–3500 cP viscosity; dosing of 0.4–1.0 ml covers most programs. Liquid dispensers (SteelPro™, PureDose™) support 0.5–1.5 ml; choose stepped dosing when facilities need tighter control. Use multi‑feed kits on large banks to reduce refill time; plan access panels for service.
Mixing valves, scald protection, and hygiene purge
Touchless faucets should be paired with ASSE 1070 thermostatic mixing valves to limit outlet temperature. In healthcare or food service, specify models with periodic hygiene purge/thermal disinfection modes (NovaRail™) to mitigate stagnation risk. Program purge cycles during low‑use windows and document them in O&M manuals.
Finishes and durability (PVD vs. plating)
PVD Brushed Gold (BG) and Matte Black offer enhanced scratch/corrosion resistance compared to standard electroplated finishes, making them preferable for hospitality and premium retail. For coastal or chloramine‑treated water, specify corrosion‑resistant internals and schedule filter maintenance quarterly.
ADA & reach considerations
Touchless activation supports ADA by eliminating tight grasping/pinching. Use compact spouts (VeloCurve™) on shallow lavs to preserve knee clearance and reach ranges. For wall‑mounts, ensure spout projection aligns with basin geometry to avoid splash and maintain reach thresholds.
Lifecycle costs and maintenance
Factor batteries, aerator replacements, and soap refills. Lithium AA cells and multi‑feed soap systems reduce labor. Specify laminar devices in healthcare to minimize aerosolization; use anti‑lime aerators in hard‑water regions. Establish quarterly PM: clean aerators/laminar devices, flush strainers, check sensor windows, and test shutoff timing.
