4.1 The suggestions of this guide are intended to provide proper installation materials and practices to be used during the installation of a central-vacuum system.

1.1 This guide demonstrates proper methods for installing a central-vacuum system.

1.2 Appendix X1 contains additional sources of information that may be helpful to the user of this guide.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.