diffusers F24 PERFORMANCE DATA PERFORMANCE DATA ML-37 / ½" SLOT SPACING WIDTH / SUPPLY WITH CONTINUOUS PLENUM Throw correction multiplier for length

Transcription

1 ML-37 / ½" SLOT SPACING WIDTH / SUPPLY WITH CONTINUOUS PLENUM 5-Slot 6-Slot 7-Slot 8-Slot Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical NC corrections for various diffuser lengths Length Supply Return Throw correction multiplier for length Length Throw Correction Performance notes appear at end of performance data

2 ML-38, -TZ / ¾" SLOT SPACING WIDTH / SUPPLY WITH CONTINUOUS PLENUM 5-Slot 6-Slot 7-Slot 8-Slot Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical NC corrections for various diffuser lengths Length Supply Return Throw correction multiplier for length Length Throw Correction Performance notes appear at end of performance data 25

3 26 ML-39 / 1" SLOT SPACING WIDTH / SUPPLY WITH CONTINUOUS PLENUM Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft Slot NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft Slot NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft Slot NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft Slot NC (Noise Criteria) Horizontal Vertical NC corrections for various diffuser lengths Throw correction multiplier for length Length Supply Return Data obtained from tests conducted in accordance with ANSI/ ASHRAE Standard Actual performance, with flexible duct inlet, may vary in the field. See the engineering section of this catalog for additional information. Horizontal throw values given are for terminal velocities of 150, 100 and 50 fpm Throw values given are for isothermal conditions, and are based on 4-foot active section. or other lengths, see the Throw Correction Table. Pressure is given in inches of WG for ML only Vertical throw values are given for terminal velocities of 50 fpm or divided throw, use the cfm-per-foot value for the number of slots in each direction. or sound, use the NC values for cfm-perfoot for the total number of slots. Length Throw Correction Each NC value represents the noise criteria curve which will not be exceeded by the sound pressure in any of the octave bands, 2nd through 7th, with a room absorption of 10 db, re watts or vertical throw, deduct 11 NC Dash (-) in space denotes an NC value of less than 10 NC is based on 4-foot lengths; for other lengths use the NC correction table Throws listed are for the 1-way pattern. or divided airflow, select the airflow in each direction according to the number of slots aimed in that direction, with the total airflow apportioned between slots. or an explanation of catalog throw data, see the Engineering Guidelines section of the catalog. Data obtained using plenums with duct velocities less than 800 fpm. See model MP (pages 34-45) for data with Titus plenums. or continuous lengths it is recommended that maximum active lengths are no longer than 10 feet

4 ML-40 / 1½" SLOT SPACING WIDTH / SUPPLY WITH CONTINUOUS PLENUM Number of Total Pressure Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Airflow, cfm/ft NC (Noise Criteria) Horizontal Vertical Throw correction table for lengths ML-40 length (ft) Correction factor NC correction table for lengths ML-40 length (ft) Correction factor Data obtained from tests conducted in accordance with ANSI/ ASHRAE Standard Actual performance, with flexible duct inlet, may vary in the field. Refer to the engineering section of the catalog for additional information. Throw values given are for isothermal conditions, and are based on 6-foot active section. or other lengths, see the Throw Correction Table. Horizontal throw values given are for terminal velocities of 150, 100 and 50 fpm Vertical throw values given are for terminal velocity of 50 fpm Throws listed are for the 1-way pattern or divided throw, use the cfm-per-foot value for the number of slots in each direction. or sound, use the NC values for cfm-perfoot for the total number of slots. Pressure is given in inches of water gauge (WG) Each NC value represents the noise criteria curve which will not be exceeded by the sound pressure in any of the octave bands, 2nd through 7th, with a room absorption of 10 db, re watts or vertical throw, deduct 11 NC Dash (-) in space denotes an NC value of less than 10 NC is based on 6-foot lengths. or other lengths use the NC correction table above. Data was obtained using plenums with duct velocities less than 800 fpm. See model MP (pages 34-45) for data with Titus plenums. or continuous lengths, a one foot blankoff should be used in between every 6 foot active section. A two foot blankoff should be used in between 10 foot active sections. Active sections should not exceed 10 feet without a blankoff. or continuous lengths it is recommended that maximum active lengths are no longer than 10 feet 27

5 RETURN OR PLENUM APPLICATIONS All pressures are in inches of water NC values are based on a room absorption of 10 db, re watts, with a 10-foot active diffuser section (see the table below) Dash ( ) in space denotes NC value less than 10 Data obtained from tests conducted in accordance with ANSI/ASHRAE Standard or continuous lengths it is recommended that maximum active lengths are no longer than 10 feet MLR-37 No. of Negative SP cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC NC Correction for Various MLR Lengths Length (ft.) MLR MLR-38, -TZ No. of Negative SP cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC MLR-39 No. of Negative SP cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC cfm per ft NC

6 MLR-40 Number of Negative Static Pressure Airflow, cfm/ft NC (Noise Criteria) Airflow, cfm/ft NC (Noise Criteria) Airflow, cfm/ft NC (Noise Criteria) Airflow, cfm/ft NC (Noise Criteria) NC correction table for lengths ML-40 length (ft) Correction factor Data obtained from tests conducted in accordance with ANSI/ ASHRAE Standard Pressure is given in inches of water gauge (WG) NC values are based on a room absorption of 10 db, re watts, with a 10-foot active diffuser section. or other lengths, refer to the NC correction table above. Dash (-) in space denotes an NC value of less than 10 or continuous lengths it is recommended that maximum active lengths are no longer than 10 feet 29