Performance data – Carrier 48DD User Manual
Page 3
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PERFORMANCE DATA
COOLING CAPACITIES (60-Hz)
4 8 D D 0 1 2 A R I * - 1 2 4 , 0 0 0 B T U H
T e m p ( F )
A i r E n t
C o n d
E v a p A
3 0 0 0 / . 0 8 ” I ’ 4 " c
i r — C f m / B F
) 6 o / . 1 2
0 0 / . 1 0 1 5 C
7 2
* 6 2
l y g p A
12
i r - E
ei
wkiF
6 2
6 7
6 2
T C
147 1 134 8 122 5 149 4 139.4 129 5 153 0 144 1 131 0
8 5
S H C
73 0
87 5 103 5 78 8
99 6 120 2 87 7 1115 131 0
K W
14.4
14.C 13.4
14.7
14.2
13.9
14,7
14.6
14.2
T C
138 9 128 i
117 4 141 6 132 2 123 8 146 2 136 8 128 6
9 5
S H C
68 7
84.9 101 4 76 3
96 4 117 6 83 4 108 2 128 6
K W
15.6
14.9
14.2
15.9
15.2
14.6 16.3
15.6
15,0
T C
134 0 124 S 114 8 137 6 128 2 117 3 142 6 133 4 125 1
1 0 0
S H C
67 3
84 0
99 6
73 7
94 9 114 8 82 2 107 0 125 1
K W
16.1
15,3
14.6
16,3
15,7
15.5
16.5
16,0
15.4
T C
130 4 120 7 ms
133
123 8 114 8 147 2 128 9 "l21 7
1 0 5
S H C
65 3
81 6
98 2
71 8
92 9
89 7
79 9 105 0 121 3
K W
16.7
15,8
15.0
16.9
16. 1 16.9
17.1
16.6
15.9
T C
121 0 112 1 104 1 123 6 114 8 109 1 126 9 117 0 114.0
1 1 5
S H C
61 .6 78 4
96 8
68 3
89 7 109 1 75.9 101 5 1 14 0
K W
17.6
16.6
15 6
17.7
16.9
16 2
18 3
17 3
16 8
*Rated
in
accordance
with
latest
ARI
Standard
210
Capacities
shown
(except
ARI)
are
gross
capacities
which
do
not
include
a
deduction
for
indoor
fan
motor heat.
BF
— Bypass Factor
Ewb
— Entering Wet-Bulb
KW
— Compressor Motor Power Input
SHC
— Sensible Heat Capacity (1000 Btuh)
TC
— Total Capacity (1000 Btuh)
NOTES:
1. Direct interpolation is permissible Do not extrapolate
2 The following formulas may be used:
sensible capacity (Btuh)
1 08
X cfm
f|wb ^ Wet-bulb temperature corresponding to enthalpy of air
leaving evaporator coil (h|y^,[з)
total capacity (Btuh)
4.5
X
cfm
Where
hewb^ Enthalpy of air entering evaporator coil
SHC is based on 80 F edb temp of air entering evaporator coil
Below 80 F edb, subtract (corr factor x cfm) from SHC
Mdb fedb ■
h|wb
- ■
BF
Entering Air Dry-Bulb Temp (F)
78
I
77
1
76
I
75
[ under 75^"
Correction Factor
10
97
1 95
2 92
3 89
4 86
20
86
1 73
2 59
3 46
4 32
.30
76
1 51
2 27
3 03
3 78
use
formula
shown below
Interpolation
is
permissible
Correction Factor = 1.08 x
(1 - BF)
X
(edb - 80)
U N I T 4 8 D D 0 1 2
F i r s t S t a g e
F u l l
I N P U T
( B t u h )
37,000
275,000
B O N N E T
( B t u h )
103.000
206.000
HEATING CAPACITIES
3 At altitudes above 2,000 ft, the following formula may be used:
bonnet capacity
NOTES
1
Ratings
are
approved
for
altitudes
to
2,000
ft
At
altitudes
over
2,000 ft, ratings are 4 percent less fo r e a c h 1,000 ft a b o ve sea
level
2
At
altitudes
up
to
2,000
ft,
the
following
formula
may
be
used
to calculate air temp rise:
At ------------------------
( 24 X specific weight of air x 60) (air quantity)
4
Maximum
allowable
gas
pressure
is
14
0
in
wg
Minimum
allowable gas pressure for full rated input is 5 0 in wg
5
Unit
may
be
field
converted
for
100
percent
LP
gas,
using
Carrier
factory
parts
Units
will
maintain
A.G
A,
certification
if
conversion
is
performed
as
directed
and
conversion
nameplate
is
attached to unit adjacent to existing unit nameplate
At =
bonnet capacity
1 .08
X air quantity
FAN PERFORMANCE, 48DD012
C F M
E X T E R N A L S T A T I C P R E S S U R E ( i n . w g )
. 4
r
. 5 [ . 6 [ . 7 1
.8
] . 9
j
1 . 0 ^ 1 . 1
1
1 . 2
1 I
1 . 5 1 1 . 6
I
F a n R p m
3 0 0 0
3 4 0 0
- I
!
1020
I
1080
I
1140
I
1210 \
1265 1 1325 I 1380 I 1430 I 1475 i 1520 T (560 I
160?
I
1650
1
1695
I
J
3 8 0 0
970
<1030 <1095 \ 1155
1(215
I 1270 I 1320 ! 1380 ! 1425 I 1470 ¡1515 I
(560
I
(605
i
(6.50
i
(695
4 0 0 0
!
1010
i
1075
i
1135 < 1195
i 1245 I 1300 ¡1355 1 1405 I 1450 I 1495 ¡1540 I
1590
i
(655
1
1680
I
4 2 0 0
(
1055 < 1115
!
((75
I 1230 : 1275 i 1330 i 1385 : 1430 i 1480 i 1520 5
(565 i (6(0
,
1655 \ 1700
4 6 0 0
1145
! (200 I 1245 I 1290 I 1345 ! 1400 i 1445 I 1485 I 1530 !
1575 \ 1620 \ 1665
I
“i
1230 j 1270 I 1315 I 1370 1 1420 i 146.5 > 1510 '
(5.50 i
1595 <1640 <1685 \
Motor brake horsepower
NOTES:
1 Fan performance has deductions for unit casing losses, wet coil,
heat exchanger, and clean filters
2.
Fan motor bhp is based on minimum voltage and 80 F air
across the standard motor
3.
All table values printed in italics indicate non standard conditions