48v t -- a – Carrier 48VT(N) User Manual
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Table 1 -- Physical Data -- Unit 48VT--A Cont’d)
UNIT SIZE
048090
048115
048130
060090
060115
060130
NOMINAL CAPACITY ---ton
4
4
4
5
5
5
SHIPPING WEIGHT---lb
(kg)
513
233
513
233
513
233
543
246
543
246
546
246
COMPRESSORS
Scroll
Quantity
1
REFRIGERANT (R---410A)
Quantity ---lb
(kg )
17.0
7.7
17.0
7.7
17.0
7.7
16.0
7.3
16.0
7.3
16.0
7.3
REFRIGERANT METERING DEVICE
TXV
OUTDOOR ORIFICE---in. (qty)
(mm)
0.040 (2)
1.02
0.049 (2)
1.24
OUTDOOR COIL
Rows...Fins---in.
Face Area---sq ft
2...21
19.4
2...21
19.4
2...21
19.4
2...21
23.3
2...21
23.3
2...21
23.3
OUTDOOR FAN
Nominal Cfm
Diameter---in.
(mm)
Motor Hp---Rpm
3500
22
559
1/4 (1100)
3500
22
559
1/4 (1100)
3500
22
559
1/4 (1100)
3800
22
559
1/3 (1100)
3800
22
559
1/3 (1100)
3800
22
559
1/3 (1100)
INDOOR COIL
Rows...Fins---in.
Face Area---sq ft
3...17
5.7
3...17
5.7
3...17
5.7
4...17
5.7
4...17
5.7
4...17
5.7
INDOOR BLOWER
Nominal Cooling Airflow---(CFM)
Size---in.
(mm)
Motor ---hp
1600
11x10
279x254
1.0
1600
11x10
279x254
1.0
1600
11x10
279x254
1.0
1750
11x10
279x254
1.0
1750
11x10
279x254
1.0
1750
11x10
279x254
1.0
FURNACE SECTION*
Burner Orifice
Natural Gas Qty...Drill Size
Propane GasQty...Drill Size
3...38
3...53
3...33
3...51
3...31
3...49
3...38
3...53
3...33
3...51
3...31
3...49
HIGH---PRESSURE SWITCH (psig)
Cut---out
Reset (Auto)
650 +/---15
420 +/---25
LOSS---OF---CHARGE /
LOW---PRESSURE SWITCH
(Liquid Line) (psig)
Cut---out
Reset (auto)
20 +/---5
45 +/---10
RETURN---AIR FILTERS †
Throwaway (in.)
(mm)
24x36x1
(610x914x25)
*Based on altitude of 0 to 2000 ft (0---610 m).
{
Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of
300 ft/minute for high---capacity type. Air filter pressure drop for non---standard filters must not exceed 0.08 IN. W.C.
}
If using accessory filter rack refer to filter rack installation instructions for correct filter size and quantity.
Table 2 – Maximum Gas Flow Capacity*
NOMINAL
IRON
PIPE, SIZE
(IN.)
INTERNAL
DIAMETER
(IN.)
LENGTH OF PIPE, FT (m)†
10
(3.0)
20
(6.1)
30
(9.1)
40
(12.2)
50
(15.2)
60
(18.3)
70
(21.3)
80
(24.4)
90
(27.4)
100
(30.5)
125
(31.1)
150
(45.7)
175
(53.3)
200
(61.0)
1/2
.622
175
120
97
82
73
66
61
57
53
50
44
40
—
—
3/4
.824
360
250
200
170
151
138
125
118
110
103
93
84
77
72
1
1.049
680
465
375
320
285
260
240
220
205
195
175
160
145
135
1---1/4
1.380
1400
950
770
600
580
530
490
460
430
400
360
325
300
280
1---1/2
1.610
2100
1460
1180
990
900
810
750
690
650
620
550
500
460
430
* Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5--IN. W.C. (based on a 0.60 specific gravity gas). Refer to Table 2
and the NFGC NFPA 54/ANSI.
† This length includes an ordinary number of fittings.
Table 3 – Heating Inputs
HEATING INPUT
(BTUH)
NUMBER OF
GAS SUPPLY PRESSURE (IN. W.C.)
MANIFOLD PRESSURE
NUMBER OF
ORIFICES
Natural{
Propane*{
MANIFOLD PRESSURE
(IN. W.C.)
ORIFICES
Min
Max
Min
Max
Natural{
Propane*†
40,000
2
4.0
13.0
11.0
13.0
3.2∼3.8
10.0∼11.0
60,000
2
4.0
13.0
11.0
13.0
3.2∼3.8
10.0∼11.0
90,000
3
4.0
13.0
11.0
13.0
3.2∼3.8
10.0∼11.0
115,000
3
4.0
13.0
11.0
13.0
3.2∼3.8
10.0∼11.0
130,000
3
4.0
13.0
11.0
13.0
3.2∼3.8
10.0∼11.0
*
When a unit is converted to propane, different size orifices must be used. See separate, natural---to---propane conversion kit instructions.
{
Based on altitudes from sea level to 2000 ft (610 m) above sea level. In th e U.S.A. for altitudes above 2000 ft (610 m), reduce input rating 4 percent for each
additional 1000 ft (305 m) above sea level. In Canada, from 2000 ft (610 m) above sea level to 4500 ft (1372 m) above sea level, derate the unit 10 percent.
48V
T
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A