Technical Data Donn Features The DONN brand air diffuser provides air delivery and return for the ceiling system. Air is supplied through the lay-in diffuser, which is placed on the 2 x 2, narrow-suspension module. The rests on the diffuser, which completes the installation. The diffuser can be used for return air as well as supply. However, air is more commonly returned through slots in light fixtures, a method which also helps cool lamps to more efficient operating temperatures. Components Diffuser The DONN air diffuser interfaces with the ceiling surface to maintain visual appeal and provide a clean, discreet slot for air flow. Designed to fit flush with FINELINE suspensions and to provide a slight reveal edge for a bolder look with CENTRICITEE suspensions. Four-way throw capability provides optimum directional control. Available in one-, two-, three-, or four-slot versions for maximum flexibility in air delivery. Plenum The DONN air diffuser is internally insulated and made of galvanized steel. The nests into the and is available with standard collar sizes to suit air delivery requirements Details
Technical Data Donn One-Slot Diffuser 8" collar standard (6" collar optional) insulation 7" 3" field-cut foil-backed USG ceiling panel one-slot Two-Slot Diffuser 8" collar standard (6" collar optional) insulation 7" 3" field-cut foil-backed USG ceiling panel two-slot 2
Three-Slot Diffuser 10" collar standard (6" or 8" collar optional) insulation 7" 3" field-cut foil-backed USG ceiling panel three-slot Four-Slot Diffuser 12" collar standard (10" collar optional) insulation 7" 3" field-cut foil-backed USG ceiling panel four-slot 3
Technical Data Donn DONN 0ne-Slot Air Throw 100 CFM 3' 5' 7' 9' 1 13' 15' 17' 19' 3' 5' 7' 9' 1 13' 15' 17' 19' CFM 3' 5' 7' 9' 1 13' 15' 17' 19' CFM Note: Terminal velocity 50 FPM. Static Pressure CFM CAPACITY 120.015.02.025.03.035.04.05.06.07.08.09.10.12.15.17.20.25.30.40 INLET STATIC PRESSURE INCHES WATER Noise Criteria CFM PER UNIT 120 0 5 10 15 20 25 30 35 40 45 50 Balancing Air Diffusers A k =.238 Velometer Measurement Points NC CURVE (LW-10dB) Probe Location (2 Velometer Probe) Note: When balancing the units, use the average of the readings at each probe location. Return-Air Data One-Slot Diffuser Open Area Sq. Ft..31 CFM Capacity @ FPM Collar Size if Ducted 8 4
DONN Two-Slot Air Throw CFM 3' 5' 7' 9' 1 13' 15' 17' 19' 3' 5' 7' 9' 1 13' 15' 17' 19' CFM 3' 5' 7' 9' 1 13' 15' 17' 19' CFM Note: Terminal velocity 50 FPM. Static Pressure CFM CAPACITY.015.02.025.03.035.04.05.06.07.08.09.10.12.15.17.20.25.30.40 INLET STATIC PRESSURE INCHES WATER Noise Criteria 700 CFM PER UNIT 0 5 10 15 20 25 30 35 40 45 50 Balancing Air Diffusers A k =.413 Velometer Measurement Points NC CURVE (LW-10dB) Probe Location (2 Velometer Probe) Note: When balancing the units, use the average of the readings at each probe location. Return-Air Data Two-Slot Diffuser Open Area Sq. Ft..59 CFM Capacity @ FPM 290 Collar Size if Ducted 10 5
Technical Data Donn DONN Three-Slot Air Throw CFM 3' 5' 7' 9' 1 13' 15' 17' 19' 3' 5' 7' 9' 1 13' 15' 17' 19' CFM 3' 5' 7' 9' 1 13' 15' 17' 19' CFM Note: Terminal velocity 50 FPM. Static Pressure CFM CAPACITY.015.02.025.03.035.04.05.06.07.08.09.10.12.15.17.20.25.30.40 INLET STATIC PRESSURE INCHES WATER Noise Criteria 700 CFM PER UNIT 0 5 10 15 20 25 30 35 40 45 50 Balancing Air Diffusers A k =.344 Velometer Measurement Points NC CURVE (LW-10dB) Probe Location (2 Velometer Probe) Note: When balancing the units, use the average of the readings at each probe location. Return-Air Data Three-Slot Diffuser Open Area Sq. Ft..84 CFM Capacity @ FPM 420 Collar Size if Ducted 12 6
DONN Four-Slot Air Throw CFM 3' 5' 7' 9' 1 13' 15' 17' 19' 3' 5' 7' 9' 1 13' 15' 17' 19' CFM 3' 5' 7' 9' 1 13' 15' 17' 19' CFM Note: Terminal velocity 50 FPM. Static Pressure 900 800 700 CFM CAPACITY.015.02.025.03.035.04.05.06.07.08.09.10.12.15.17.20.25.30.40 INLET STATIC PRESSURE INCHES WATER Noise Criteria 800 700 CFM PER UNIT 0 5 10 15 20 25 30 35 40 45 50 Balancing Air Diffusers A k =.317 Velometer Measurement Points NC CURVE (LW-10dB) Probe Location (2 Velometer Probe) Note: When balancing the units, use the average of the readings at each probe location. Return-Air Data Four-Slot Diffuser Open Area Sq. Ft. 1.06 CFM Capacity @ FPM 530 Collar Size if Ducted 14 7
Technical Service 800 USG.4YOU Web Site www.usg.com Samples/Literature 888 874.2450 Samples/Literature Fax 888 874.2348 Customer Service 800 950.3839 Suspension Interface FINELINE Suspension FINELINE grid ceiling panel (must be foil-backed) CENTRICITEE Suspension CENTRICITEE grid ceiling panel (must be foil-backed) Manufactured by USG Interiors, Inc. 125 South Franklin Street Chicago, IL 60680 The following are trademarks of USG Interiors, Inc., or a related company: DONN, CENTRICTEE, FINELINE. AC272/rev. 8-06 6, USG Interiors, Inc. Printed in U.S.A.