Design Technical Manual

Table Of Contents
1) Equation for capacity calculation of outdoor unit.
2) Cooling capacity table of 14Ton outdoor units: AOUA168TLBVG (AOUA96TLBV +
AOUA72TLBV)
Total rated
cooling capacit y
of indoor unit
Outdoor
temp.
Indoor temperature (
°FDB / °FWB
)
68 / 59 80 / 67 82 / 68 86 / 72 90 / 73
FDB) TC IP TC IP TC IP TC IP TC IP
201.6
(120%)
50
128.5 7.5 8 198.0 11.19 200.5 11.18 210.9 11.13 213.5 11.11
.
. . . . . . . . . .
.
. . . . . . . . . .
95
128.5 10.05 177.1 14.46 179.1 14.51 187.3 14.70 189.3 14.75
.
. . . . . . . . . .
115
128.5 14.03 158.4 17.42 160.3 17.49 167.8 17.7 6 169.7 17.8 3
184.8
(110%)
50
117.8 7.02 184.8 10.57 193.3 11.02 205.6 11.16 20 8.1 11.14
.
. . . . . . . . . .
.
. . . . . . . . . .
95
117.8 9.27 173.6 14.37 175.6 14.42 183.6 14.61 185.6 14.66
.
. . . . . . . . . .
115
117.8 12.50 155.5 17.31 157.4 17.3 8 164.8 17.6 5 166.6 17.71
Capacity ratio of indoor units to outdoor unit X1 = 110 % X = 114.3 % X2 = 120 %
Capacity of outdoor units (kBtu/h) Y1 = 175.6 Y Y2 = 179.1
Y= (179.1-175.6) / (120-110)
(114.3-110) + 175.6 =
177.1 (kBtu/h)
3) Cooling capacity table of 16Ton outdoor units: AOUA192TLBVG (AOUA120TLBV +
AOUA72TLBV)
Total rated
cooling capacit y
of indoor unit
Outdoor
temp.
Indoor temperature (
°FDB / °FWB
)
68 / 59 80 / 67 82 / 68 86 / 72 90 / 73
FDB) TC IP TC IP TC IP TC IP TC IP
211.2
(110%)
50
134.6 7.8 8 211.2 11.87 220.9 12.37 236.5 12.66 239.5 12.65
.
. . . . . . . . . .
.
. . . . . . . . . .
95
153.7 11.75 198.6 16.26 200.8 16.33 209.7 16.60 212.0 16.67
.
. . . . . . . . . .
115
153.7 16.58 177.6 19.42 179.6 19.50 187.7 19.83 189.8 19.91
192.0
(100%)
50
139.8 8.15 192.0 10.87 200.8 11. 3 3 229.5 12.67 232.3 12.66
.
. . . . . . . . . .
.
. . . . . . . . . .
95
139.8 10.77 192.0 15.78 196.2 16.18 205.0 16.46 207. 2 16.53
.
. . . . . . . . . .
115
139.8 14.47 173.9 19.26 175.9 19.34 183.8 19.68 185.8 19.76
Capacity ratio of indoor units to outdoor unit X = 100 %
Capacity of outdoor units (kBtu/h) Y = 196.2
Y=
196.2 (kBtu/h)
Fig.2 Method for calculation of capacity of outdoor unit from capacity tables
X
2
Y
2
X
1
Y
1
YX
(X
1
, Y
1
)
(X
2
, Y
2
)
(X, Y)
x
y
i) Refer to 4. CAPACITY TABLE
(OUTDOOR UNIT) to nd Y
1
and Y
2
using
X
1
and X
2
.
ii) Calculate capacity of outdoor unit using
following equation:
Y=(Y
2
-Y
1
) / (X
2
-X
1
)
(X-X1) + Y
1
Capacity ratio of indoor units to outdoor unit, X (%)
Capacity of outdoor unit, Y (kBtu/h)
- (02 - 12) -
MODEL
SELECTION
MODEL
SELECTION