Hello. Sign In
Standards Store
Look Inside

UL 921

7th Edition, September 20, 2017

Complete Document

UL Standard for Safety Commercial Dishwashers

Includes all amendments and changes through Revision Page(s) , September 20, 2017

View Abstract
Product Details
Document History

Detail Summary

Active, Most Current

Additional Comments:
SAME AS CSA C22.2 NO 168
Price (USD)
Single User
Call for Quote
In Stock
Add to Cart

Product Details:

  • Revision: 7th Edition, September 20, 2017
  • Published Date: September 20, 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: UL (UL)
  • Page Count: 153
  • ANSI Approved: Yes
  • DoD Adopted: Yes

Description / Abstract:

This Standard covers commercial, freestanding, under-counter, and counter-insert dishwashers, utensil-washers, and glass washers using water as the principal cleaning medium, hereafter referred to as dishwashers. These dishwashers utilize steam, gas, or electric heaters for heating the water. Heated water is provided to a dishwasher by means of steam, gas, or electric heating systems integral to the appliance, or by means not integral to the dishwasher that is provided at the installation site.

This Standard covers:

a) electric dishwashers rated 600 V or less, installed in accordance with the Canadian Electrical Code (CEC), Part 1, CSA C22.1, and the National Electrical Code (NEC), NFPA 70; and

b) the gas-handling, gas-burning, and gas-control features of gas-fired dishwashers having inputs of 400,000 Btu (420 MJ) per hour or less, limited to 0.5 psig (3.45 kPa) inlet pressure, installed in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, ICC IFGC, or the Natural Gas and Propane Installation Code, CSA B149.1 for use with:

1) natural gas;

2) manufactured gas;

3) mixed gas;

4) propane gas;

5) liquefied petroleum gases; or

6) LP gas-air mixtures.

These requirements cover dishwashers intended for use in commercial establishments, such as kitchens of restaurants and hospitals, where they are not intended to be accessible to the public