Minnesota Administrative Rules

4675.1800 FILTER EFFICIENCIES.

All filter efficiencies shall be certified by an independent testing agency and shall be based on ASHRAE Standard No. 52-68, except as noted in 7-30D-2-1(2).

Filter frames shall be durable and carefully dimensioned and shall provide an airtight fit with the enclosing duct work. All joints between filter segments and the enclosing duct work shall be gasketed or sealed to provide a positive seal against air leakage.

Each filter bed serving operating room areas or central air systems shall have a manometer installed across each filter bed.

Statutory Authority:

MS s 144.56

Published Electronically:

January 21, 2000