York Y33 - Manual (Page 79)

246653-YTG-E-0108
Johnson Controls Unitary Products 79
NOTES:Basic Unit = cooling only, 10hp FC fan.
+ Econ = +235lb
+ Heat = single stage gas, 180 lb
+ Power Exhaust = modulating 7.5hp
Sound Power Ratings for Supply Air Blowers in our Millen-
nium Units with High Gas Heat, Economizer, 2: T/A Filters
and Wet DX Sound power calculations complements of Lau’s
revised “Whirlwind” application selection software for air mov-
ing components. The sound ratings above occur at the blower wheel. To deter-
mine the sound rating at a unit’s supply and return air duct
connection, subtract the attenuation factors listed below.
NOTE: These values have been accessed using a model of
sound propagation from a point source into the
hemispheric free field (AMCA 303-79). The dBA val-
ues provided are to be used for reference only. Cal-
culation of dBA values cover matters of system
design, and the fan manufacturer has no way of
knowing the details of each system. This constitutes
an exception to any specification or guarantee
requiring a dBA value or sound data in any other
form than sound power level ratings.
TABLE 61: UNIT CORNERWEIGHT
UNIT
DESCRIPTION
25 TON 30 TON 40 TON
A B C D A B C D A B C D
B ASIC U NIT 870 949 1352 1239 930 972 1360 1303 969 969 1454 1454
B ASIC U NIT W ITH
E CONOMIZER
1018 1111 1313 1203 1076 1124 1328 1272 1058 1058 1482 1482
B ASIC U NIT W ITH
E CONOMIZER AND
G AS OR E LECTRIC
H EAT
994 1084 1418 1300 1073 1073 1403 1403 1102 1055 1503 1570
B ASIC U NIT W ITH
E CONOMIZER AND
G AS OR E LECTRIC
H EAT AND P OWER
E XHAUST
1220 1275 1318 1262 1275 1275 1410 1410 1335 1278 1485 1551
TABLE 62: INDOOR SOUND POWER RATING
M ODEL N UMBER CFM
ESP B LOWER
S OUND P OWER ( D B 10-12 W ATTS )
OCTAVE BAND CENTERLINE FREQUENCY (H Z )
DBA
IWG RPM BHP 63 125 250 500 1000 2000 4000 8000
Y32 10,000 1.5 750 7.5 90 88 85 85 80 78 74 68 87
Y33 12750 1.5 840 12.8 93 91 88 88 83 81 77 71 90
Y34 17500 1.3 800 20 95 92 89 89 84 83 78 72 91
TABLE 63: ATTENUATION FACTORS
L OCATION
O CTAVE B AND C ENTERLINE F REQUENCY (H Z )
63 125 250 500 1000 2000 4000 8000
S OUND A TTENUATION ( D B 12 W ATTS )
S UPPLY A IR 11 13 18 10 21 21 23 23
R ETURN A IR 13 15 22 23 25 25 29 29
TABLE 64: OUTDOOR SOUND POWER RATING
M ODEL
O CTAVE B AND C ENTERLINE F REQUENCY (H ERTZ )
db(A) 65 125 250 500 1000 2000 4000 8000
S OUND P OWER L EVEL , DB (10)-12 W ATTS
Y32 88 91 89 86 82 79 76 72 88
Y33 87 90 88 86 82 80 77 73 88
Y34 88 91 89 86 82 80 77 73 88