Unit Cornerweight; Indoor Sound Power Rating; Attenuation Factors; Outdoor Sound Power Rating - York Y34 Technical Manual

TABLE 61: UNIT CORNERWEIGHT
UNIT
DESCRIPTION
A
B U 870
ASIC NIT
B U W
ASIC NIT ITH
1018
E
CONOMIZER
B U W
ASIC NIT ITH
E
CONOMIZER AND
994
G E
AS OR LECTRIC
H
EAT
B U W
ASIC NIT ITH
E
CONOMIZER AND
G E 1220
AS OR LECTRIC
H P
EAT AND OWER
E
XHAUST
NOTES:Basic Unit = cooling only, 10hp FC fan.
+ Econ = +235lb
+ Heat = single stage gas, 180 lb
+ Power Exhaust = modulating 7.5hp
TABLE 62: INDOOR SOUND POWER RATING
M N CFM
ODEL UMBER
Y32 10,000
Y33 12750
Y34 17500
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.
TABLE 63: ATTENUATION FACTORS
L
OCATION
S A
UPPLY IR
R A
ETURN IR
TABLE 64: OUTDOOR SOUND POWER RATING
M 65
ODEL
Y32 88
Y33 87
Y34 88
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.

Johnson Controls Unitary Products

25 TON
B C D A
949 1352 1239 930
1111 1313 1203 1076
1084 1418 1300 1073
1275 1318 1262 1275
ESP B
LOWER
IWG RPM BHP
1.5 750 7.5
1.5 840 12.8
1.3 800 20
63 125
11 13
13 15
O B
CTAVE AND
125 250 500
S P
OUND OWER
91 89 86
90 88 86
91 89 86
30 TON
B C
972 1360 1303
1124 1328 1272
1073 1403 1403
1275 1410 1410
S
OUND
OCTAVE BAND CENTERLINE FREQUENCY (H
63 125 250 500
90 88 85
93 91 88
95 92 89
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.
O B C F
CTAVE AND ENTERLINE REQUENCY
250 500 1000
12
S A ( B
OUND TTENUATION D
18 10 21
22 23 25
C F (H )
ENTERLINE REQUENCY ERTZ
1000 2000
L , (10)-12 W
EVEL DB ATTS
82 79
82 80
82 80
246653-YTG-E-0108
40 TON
D A B
969 969 1454
1058 1058 1482
1102 1055 1503
1335 1278 1485
P ( B 10-12 W )
OWER D ATTS
)
Z
1000 2000 4000
85 80 78 74
88 83 81 77
89 84 83 78
(H )
Z
2000 4000
W )
ATTS
21 23
25 29
4000 8000
76 72
77 73
77 73
C D
1454
1482
1570
1551
DBA
8000
68 87
71 90
72 91
8000
23
29
db(A)
88
88
88
79