Owner's manual

Page 75 of 197
Figure 5-14
Acceptance
Average downflow shall be 55 +/-5 FPM with all test points being within +/- 16 FPM.
Inflow Velocity Calculation - Primary Method
Note: The dress panel MUST be installed on the cabinet to obtain an accurate inflow
value.
The average inflow velocity for all Logics is 105 ±5 FPM, and should be determined by
converting the inflow volume to the average inflow velocity. The inflow volume is
measured directly by sealing a direct inflow measuring flowmeter to the face of the unit.
When corrected for local conditions, dividing the inflow volume by the opening area will
yield the average inflow velocity.
Table 5-3
Inflow Test Specifications
Model 34308 34300 34408 34400 34508 34500 34608 34600
Nominal Average Inflow
(FPM)
105+/-5 105+/-5 105+/-5 105+/-5 105+/-5 105+/-5 105+/-5 105+/-5
Sash Open Area (Sq. Ft) 2.03 2.53 2.69 3.37 3.36 4.2 4.03 5.03
Nominal Avg. Exhaust Vol.
(CFM)
213 266 283 354 353 441 423 529
Avg. Exhaust Vol. Range
(CFM)
203-223 253-278 269-296 337-371 336-370 420-462 403-443 503-553
Acceptance
Average inflow shall be 105 +/-5 FPM.