Attribute Schema Library
Attribute schemafoodservice equipment & supply

Commercial Dishwashers Attributes

Commercial dishwashers are warewashing machines certified to NSF/ANSI 3 and sold through foodservice equipment dealers, reps, and consultants: undercounter, single-tank door type, pot/pan/utensil (PPU), rack conveyor, and flight type. Two buyers use the same record differently: an operator replacing a dead machine, and a consultant specifying against a kitchen drawing months out.

The data is hard because the spec lives in a four-page cut sheet, not a feed. One model line ships as base/advanced, vented/ventless, standard/tall, single-point/dual-point, straight-through/corner, across 208-240V single phase, 208-240V three phase, and 480V — each a distinct SKU with its own rated amps and MCA. The electrical table is three rows the catalog flattens into one.

Vocabulary drifts too. ENERGY STAR and ASTM F1696 say "stationary single tank door"; suppliers ship "door type", "pass-through", "hood type", "upright". Racks per hour is a rated maximum computed per NSF/ANSI 3 at a stated cycle time — a 45 and a 60 aren't comparable unless the cycle travels with them.

Core

Every SKU needs these. Without them the record is not a product, it is a row.

Machine Type
enum
Single Tank Door Type

The primary filter. Determines footprint, rack handling, plumbing, and which ASTM test method and ENERGY STAR threshold table applies.

Sanitizing Method
enum
High Temperature (Hot Water Sanitizing)

High temp needs a booster and 180°F rinse; low temp needs chemical pumps and 120°F. Changes electrical, plumbing, and the health-code path.

Capacity, Racks Per Hour
number · racks/h
45

How operators size against covers. Rated maximum per the NSF/ANSI 3 formula; only comparable when the cycle time is carried alongside it.

Rack Size Accepted
enum
19-3/4 in x 19-3/4 in (20 x 20 nominal)

Decides whether the operator's existing racks transfer. Nominal 20 x 20 in machines actually accept 19-3/4 in racks; oversize and PPU chambers differ.

Electrical Supply (Voltage / Hz / Phase)
enum
208-240 V / 60 Hz / 3-Phase

Three-phase is not available in every kitchen. Wrong phase is the most common reason a warewasher sits crated on a dock.

Total Connected Load
number · kW
12.5

Drives panel capacity and utility service planning. Sum of heating unit and booster; a ventless door machine can pull over 12 kW.

Final Rinse Water Consumption
number · gal/rack
0.67

The ENERGY STAR qualifying metric and the number operators use for water and sewer cost. High temp door limit is 0.89 GPR.

Incoming Water Supply Requirement
text
55°F min; 15-65 psi flow; ≤3 grains hardness

Minimum inlet temperature, flow pressure, and hardness limit. Below the stated pressure, fill and start-up times drift out of spec.

Overall Dimensions (W x D x H)
text · in
25-3/16 x 30 x 78-1/2

Undercounter is defined as 38 in or less overall height. Door machines need the raised-door height checked against the ceiling.

Manufacturer Part Number (MPN)
identifier
AM16VL-BAS

The only key that survives across the cut sheet, the AutoQuotes record, the CAD block, and the rep's quote.

GTIN-14 / UPC-A
identifier
00012345678905

Required by marketplace listings and any GS1-based sync. Missing GTIN blocks the SKU from third-party channels entirely.

Country of Origin
enum
United States

Drives tariff classification, and government and institutional bids that carry domestic-preference clauses.

Differentiating

What buyers actually compare on. This is where catalogs win or lose the filter.

Booster Heater Configuration
enum
Integral electric, 7.1 kW

Integral, external, or none. An external booster is a separate line item and a separate circuit the quote has to include.

Ventless Condensing System
boolean
true — self-contained condensing

A self-contained condensing system listed to UL 921 can avoid a Type II hood where the AHJ accepts the engineered HVAC load.

Wash Cycle Time
text · s
120 / 240 / 360 (2, 4, 6 min selectable)

Sets real throughput and the NSF pot/pan rating. Selectable cycles mean racks-per-hour is quoted at the fastest setting.

Installation Orientation
enum
Straight-through or corner

Corner installs need a splash shield and a repositioned rack track. Straight-through and corner are often the same SKU with different kits.

Compliance & identifiers

Standards, regulatory data, and the identifiers channels reject you for missing.

Sanitation Certification
enum
NSF/ANSI 3 (NSF mark)

NSF/ANSI 3 certification is what the health inspector looks for. ETL Sanitation to the same standard is an accepted equivalent.

Electrical Safety Listing
enum
cULus (UL 921 / CSA C22.2 No. 168)

Required for permit and inspection. UL 921 is the commercial dishwasher standard; its supplement covers self-contained condensing systems.

The fields that aren't in the schema at all

What most commercial dishwashers catalogs are missing.

The table above is the schema most catalogs already have. These are the attributes that usually aren't in it — each one surfaced by a signal from the live market rather than by an audit of what's already there. This is what Anglera's Schema Foundry does on a real catalog, in this category.

Supplier signal
+ Heat Gain to Space (Latent / Sensible, BTU/hr)

Every ventless cut sheet publishes a latent and sensible BTU/hr heat-gain table, because the UL 921 hood exemption depends on the HVAC being engineered for it. Catalogs list 'Ventless: Yes' and stop.

The mechanical engineer can't size the load or document the Type II hood exemption, so the consultant specs a vented machine and the ventless SKU loses the job.

Supplier signal
+ Booster Heater Temperature Rise (°F)

Cut sheets rate boosters at a specific rise — 40°F, 70°F — against a stated inlet temperature. Catalogs collapse all of it to 'with booster heater'.

A 40°F-rise booster on a 110°F supply never reaches the 180°F sanitizing rinse. The machine fails inspection at startup and comes back as a warranty argument.

Competitor signal
+ Idle Energy Rate (kW) and Washing Energy (kWh/rack)

The ENERGY STAR certified-product finder exposes idle energy rate and per-rack consumption for every listed model. Distributor pages show the logo and neither number.

Rebate paperwork stalls. The operator pulls the figures off the manufacturer site, and the order tends to follow whoever answered the question.

Supplier signal
+ Minimum Supply Circuit Ampacity (MCA)

Cut sheets give rated amps, minimum supply circuit ampacity, and maximum protective device as three separate columns per voltage. Catalogs publish one 'Amps' figure, usually the rated amps.

The electrician sizes the breaker to rated amps instead of MCA, the circuit trips on booster draw, and the callback lands on the dealer.

Supplier signal
+ Peak Drain Flow Rate (GPM) and Max Drain Height AFF

Pumped-drain models publish a peak drain flow in GPM and a maximum drain height above finished floor. No distributor filter rail exposes either field.

The pump can't lift to an existing standpipe, or the floor sink won't take peak flow. The install stops and a 300 lb crated machine ships back.

How Schema Foundry finds these

Messy in, governed out.

The same value, spelled every way foodservice equipment & supply suppliers spell it. A filter only works once they agree.

Sanitizing Method
High TempHi-TempHot Water SanitizingHTElectric Booster180 Degree
High Temperature (Hot Water Sanitizing)

ENERGY STAR and ASTM F1696 say 'hot water sanitizing'; the trade says 'high temp'. Both have to land on one filter value.

Machine Type
Door TypeDoor-TypePass-ThroughPass ThruHood TypeUpright
Single Tank Door Type

ENERGY STAR calls it 'Stationary Single Tank Door'. Six supplier spellings collapse to one facet, or the rail splits into six.

Final Rinse Water Consumption
.67 gal/rack0.67 GPR0.67 gallons per rack30.15 GPH2.5 L/rack
0.67 gal/rack

Some suppliers publish gallons per hour only. Converting needs the racks/hour rating — a derived field, not a copied one.

Electrical Supply
208-240/60/3230V 3PH208/240V 60Hz 3 Phase3 PH 208240-3-60
208-240 V / 60 Hz / 3-Phase

Dealers filter by phase before anything else. Free-text electrical strings mean the three-phase filter misses most of the catalog.

What buyers ask

Every one of these should be answerable from the attributes above. If it isn't, that's a gap.

  • Is it high temp or low temp, and which one will my health inspector sign off on?
  • My incoming water is 110°F — do I still need a booster, and will this one get to 180°F?
  • Is it actually ventless, or do I have to put a hood over it?
  • Can I run this on single phase, or does it need three phase?
  • Will it fit under a 36-inch counter, and can I open the door under my ceiling?
  • Does it take the 20 x 20 racks I already have?
  • Is it NSF rated for pots and pans, or just plates and glasses?
  • How many racks per hour do I need for 200 covers a night?

What channels require

The same SKU, different mandatory fields per destination.

AutoQuotes (AQ) / KCL — dealer and consultant
MPN and modelSpec sheet PDFCAD block / Revit familyMEP data: voltage, phase, load, water, drainRough-in dimensionsList price
Distributor's own site and filter rail
Machine typeSanitizing methodRacks per hourRack size acceptedElectrical supplyOverall dimensions
Amazon Business
GTIN-14 / UPC-ABrand and MPNItem and shipping dimensionsItem weightCountry of origin
Utility rebate / ENERGY STAR submission
ENERGY STAR certification and versionIdle energy rate (kW)Washing energy (kWh/rack)Water consumption (gal/rack)Machine type per ENERGY STAR taxonomy

Commercial Dishwashers data, in practice

What actually changes in the record between a high temp and a low temp machine?

More than a single flag. High temp machines sanitize with a 180°F final rinse, which means a booster heater, a temperature-rise rating, an inlet temperature requirement, and a much larger connected load — a door machine can carry a 7 kW booster on top of a 5 kW tank heater. Low temp machines sanitize chemically at roughly 120°F with chlorine at 50 ppm or more, so they need chemical pump fields, sanitizer compatibility, and consumable line items instead. The ENERGY STAR thresholds are separate tables: a high temp door machine qualifies at 0.89 gal/rack or less, a low temp door machine at 1.18. Treating sanitizing method as one enum and nothing else leaves every dependent field wrong.

Why isn't racks per hour comparable across suppliers?

It's a rated maximum, not an observed rate. NSF/ANSI 3 defines the formula by machine type — stationary rack machines use 3600 divided by cycle time in seconds, times racks per cycle; rack conveyors use conveyor speed in feet per minute times 60, divided by rack length. A door machine quoting 60 racks per hour is quoting its shortest cycle. Run the same machine on a 4-minute pot and pan cycle and real throughput drops accordingly. Carry cycle time next to capacity or the comparison is meaningless, and note that some suppliers publish only dishes per hour or glasses per hour at an assumed 25 dishes or 45 glasses per rack.

Which standards genuinely apply here?

NSF/ANSI 3 covers design, construction, materials, and sanitization performance for commercial warewashing equipment, and is what health inspectors reference; ETL Sanitation listing to the same standard is an accepted equivalent. UL 921 / ANSI Z83.21 / CSA C22.2 No. 168 is the electrical safety standard for commercial dishwashers, and its supplement covers self-contained condensing systems. ASTM F1696 and F1920 are the energy performance test methods for stationary-rack and rack-conveyor machines and underpin ENERGY STAR v3.0. NSF/ANSI 170 supplies the terminology. ASSE 1010 applies to the water hammer arrestor installed in the supply line, not to the machine itself.

What does 'ventless' actually require to be true?

A ventless machine has a self-contained condensing system listed to UL 921. That listing is what allows a jurisdiction to waive the Type II hood — but the exemption typically also requires the space's HVAC to be engineered for the latent and sensible heat the machine emits, and the AHJ has to approve it. That's why the heat-gain table on the cut sheet is load-bearing: without latent and sensible BTU/hr in the record, nobody can run the calculation, and 'ventless' is a claim rather than a specification. Ventless models also carry lower rated capacity than their vented siblings in the same line, so the two shouldn't share a spec row.

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