SUN - UL 2200, Stationary Engine Generator Assemblies

Effective November 6, 2015

Standard Information
Standard Number:
UL 2200
Standard Name:
Stationary Engine Generator Assemblies
Standard Edition and Issue Date:
2nd Edition Dated June 1, 2012
Date of Revisions:
August 26, 2014 and October 29, 2014
Date of Previous Revisions to Standard:
October 10, 2014
 
Effective Date of New/Revised Requirements

Effective Date (see Schedule below): November 6, 2015

 
Impact, Overview, Fees and Action Required

Impact Statement: A review of all Listing Reports is necessary to determine which products comply with new/revised requirements and which products will require re-evaluation. NOTE: Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on Effective Date noted above, unless the product is found to comply with new/revised requirements.

Overview of Changes: The August 26, 2014 update includes revised requirements for automatic safety shutoff valves and gas flow controls. The October 29, 2014 update includes revised requirements of the accelerated aging test evaluation requirement for gaskets made of neoprene or rubber compound. Specific details of new/revised requirements are found in table below.

Schedule: So that shipping of products with Listing Marks will not be interrupted, an approximate schedule has been established to ensure Listing Reports are found compliant by Effective Date:

  • March 9, 2015 = 8 Month Report Review – Intertek will review all Reports. Update if compliance is verified or issue Findings Letter/Quote for any re-evaluations needed
  • May 7, 2015 = 6 Month Quote Cut-off – Quotes returned for necessary re-evaluations
  • October 6, 2015 = 30 Day Warning – Client advised of all non-compliant Reports to be Suspended
  • November 6, 2015 = Effective Date – ATM Suspended for all non-compliant Reports

Fees: An initial review of Listing Report (s) will be covered by a direct billing project and will be invoiced at not more than $1000 per report.

Client Action Required:

Information – To assist our Engineer with review of your Listing Reports, please submit technical information in response to the new/revised paragraphs noted in the attached or explain why these new/revised requirements do not apply to your product(s).

Current Listings Not Active? – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records. We will do this at no charge as long as Intertek is notified in writing prior to the review of your reports.

 
Description of New/Revised Technical Requirements

NOTE: Additions to existing requirements are underlined and deletions are shown lined out below.

ClauseVerdictComment
 Info

New/Revised Requirements from Revision August 26, 2014;

Revised requirements for automatic safety shutoff valves and gas flow controls.

41InfoFuel Systems
41.3InfoNatural Gas
41.3.2InfoGas Flow Controls
41.3.2.2InfoAutomatic valves and automatic safety shutoff valves (ASSV)
41.3.2.2.1 

All gas to the engine shall pass through at least two valves in series which are sometimes in a single control body. These valves shall be either:

  1. At least two automatic valves all of which operate each time there is a call for fuel and also serve as safety shutoff valves, or 
  2. At least one automatic valve and one safety shutoff valve. The automatic valve shall operate each time there is a call for fuel and also serve as a safety shutoff valve. The safety shutoff valve shall serve only as a safety shutoff valve.
All gas to the engine shall pass through at least one automatic valve and one automatic safety shutoff valve. The valves shall be in series and may be in a single control body.
41.3.2.2.2 

Automatic valves shall comply with the applicable provisions of the Standard for Automatic Valves for Gas Appliances, ANSI Z21.21.

Automatic safety shutoff valve (ASSV):

  1. Shall close upon shutdown or failure conditions, to automatically stop the flow of gas within one second. The valve closes upon command from the automatic engine shutdown sensor.
  2. Shall be of the type that fails closed.
41.3.2.2.3 

Electrically operated main gas-control valves shall be of a type that close upon current failure.

Automatic valve:

  1. The automatic valve shall:
    1. Operate each time there is a call for fuel.
    2. Completely stop the flow of gas within 1 second of the engine shutting down for any reason.
    3. Be of the type that fails closed.
  2. A zero governor regulator or an auxiliary valve may serve as the automatic valve.
41.3.2.2.4 

Automatic valves and automatic safety shutoff valves shall comply with the applicable requirements in the Standard for Automatic Valves for Gas Appliances, ANSI Z21.21, including the following:

  1. Normally closed electrically operated automatic safety shutoff valves shall close upon zero current flow.
  2. Normally closed gas operated automatic safety shutoff valves shall close upon pressure failure to the valve operator.
   
 Info

New/Revised Requirements from Revision October 29, 2014;

Revise the accelerated aging test evaluation requirement for gaskets made of neoprene or rubber compound.

72 Construction
72.1 The enclosure of an outdoor unit shall be protected against outdoor exposure in accordance with the requirements in 72.2 – 72.14 72.15.
72.15 

Gaskets depended upon for protection from rain shall be made of neoprene, rubber compounds or solid polyvinyl-chloride materials, except foamed materials, and shall:

  1. Comply with the applicable requirements in the Standard for Gaskets and Seals, UL 157, or
  2. Be evaluated to the Accelerated Aging Test, Section 73.2.
73 Performance
73.2.1 

In accordance with the requirements in 72.15, gaskets depended upon for protection from rain and made of neoprene, or rubber compounds  andor solid polyvinyl-chloride materials, except foamed materials, shall have physical properties as indicated in Table 73.1 before and after the conditioning indicated in Table 73.2.

Exception: The test is not required when the gaskets comply with the requirements in the Standard for Gaskets and Seals, UL 157.

Table 73.1 Physical properties for gaskets

CUSTOMERS PLEASE NOTE: This Table and column "Verdict" can be used in determining how your current or future production is or will be in compliance with new/revised requirements.

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