ANSI/UL 641-2009
Standard for Safety for Type L Low-Temperature Venting Systems

Standard No.

ANSI/UL 641-2009

Release Date

2009

Published By

American National Standards Institute （ANSI)

Latest

ANSI/UL 641-2009

Scope

UL proposes the following change to 641: Correction of Celsius units in Paragraph 19.1.

ANSI/UL 641-2009 history

• 2009 ANSI/UL 641-2009 Standard for Safety for Type L Low-Temperature Venting Systems