Carrier 48TJ016-028 - Manual (Page 7)

Table 1 — Physical Data
UNIT 48TJ
016D/F
020D/F 024D/F 028D/F
208/230, 460 V 1 575 V
NOMINAL CAPACITY (tons) 15 18 20 25
OPERATING WEIGHT (lb)
Economizer
Roof Curb
1650
90
200
1B00
90
200
1850
90
200
2000
90
200
COMPRESSOR
Quantity...Model (Ckt 1, Ckt 2)
Number of Refrigerant Circuits
Oi!(oz)(Ckt1,Ckt 2)
Stages of Capacity Controi (%)
2...SR’'942AE
2
90, 90
50/50
Scr
1...SM120,
1...SRV82AE
2
110, 72
60/40
3ll
1.. .5M120,
1.. .5M110
2
110,110
52/48
1.. .5M161,
1.. .5M120
2
112, 110
56/44
REFRiGERANTTYPE
Expansion Device
Operating Charge (Ib-oz)
Circuit 1*
Circuit 2
R-22
TXV
10-13 1 15-2 1 16-3 1 21-0
10-5 1 11-5 1 14-8 1 15-4
CONDENSER COIL
Rows...Fins/in.
Total Face Area (sq ft)
Cross-Hatched %-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
2.,.17 1 3...15 1 3...15 I 4.,,15
21.7 1 21.7 1 21.7 1 21.7
CONDENSER FAN
Nominal Cfm
Quantity...Diameter (in.)
Motor Hp...Rpm
Watts Input (Total)
10,400
3.. .22
f/2..,1050
1100
Propelle
9300
3...22
'/г...1050
1100
r Type
13,700
2,,.30
1..,1075
3400
12,500
2...30
1.,.1075
3400
EVAPORATOR COIL
Rows...Fins/in.
Total Face Area (sq ft)
Cross-Hatched ^/a-in. Copper Tubes, Aluminum Lanced or
Copper Plate Fins, Face Split
2...17 I 3...15 I 3...15 I
17.5 17.5 17.5
4...15
17.5
EVAPORATOR FAM Centrifugal Type
Quantity...Size (in.) 2...10 X 10 2...10 X 10 2...12X 12 2...12 X 12 2...12X 12
Type Drive Belt Belt Belt Belt Belt
Nominal Cfm 6000 6000 7200 8000 10,000
Motor Hp 3.7 3.0 5 7.5 10
Motor Nominal Rpm 1725 1725 1745 1745 1740
Maximum Continuous Bhp 4.25 3.45 5.90
8.7 [208/230, 575 v]
9.5 [460 v[
10.2 [208/230, 575 v[
11.8 [460 v]
Motor Frame Size 56H 56H 184T 213T 215T
Nominal Rpm High/Low — — — — —
Fan r/s Range Low-Medium Static 891-1179 1159-1429 910-1095 1002-1225 1066-1283
High Static 1227-1550 — 1069-1287 1193-1458 1332-1550
Motor Bearing Type Ball Ball Ball Ball Ball
Maximum Allowable Rpm 1550 1550 1550 1550 1550
Motor Pulley Pitch Diameter Low-Medium Static 3.1/4.1 4.3/5,3 4.9/5.9 5.4/6.6 4,9/5.9
Min/Max (in.) High Static 3.7/4.7 _ 4.9/5.9 5.4/6.6 4,9/5.9
Nomina! Motor Shaft Diameter (in.) % V h 1'/8 1% 13/8
Fan Pulley Pitch Diameter (in.) Low-Medium Static 6.0 6.4 9.4 9.4 8.0
High Static 5.2 — 8.0 7.9 6.4
Nominal Fan Shaft Diameter (in.) 1"/,6 13/16 1"/16 1"/i6 1Vi6
Belt, Quantity..,Type...Length (in.) Low-Medium Static 1...BX...42 1...BX...45 1...BX...50 1...BX...54 2...BX...50
High Static 1...BX...42 — 1...BX...48 1..,BX,..50 2..,BX,..47
Pulley Center Line Distance (in.) 13.5-15,5 13.5-15,5 13.3-14.8 14.6-15.4 14,6-15.4
Speed Change per Full Turn of Low-Medium Static 48 44 37 37 36
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
High Static 55 — 34 44 45
From Closed Position 5 5 5 5 5
Factory Speed 3.5 3,5 3.5 3.5 3.5
Factory Speed Setting (rpm) Low-Medium Static 1035 1296 1002 1120 1182
High Static 1389 — 1178 1328 1470
Fan Shaft Diameter at Pulley (in.) 1"/i6 13/16 1^16 1 Vi 6 1 Vi6
LEGEND
Bhp ™ Brake Horsepower
TXV — Thermostatic Expansion Valve
Xircuit 1 uses the lower portion of condenser coil and lower portion of evap­
orator coils; and Circuit 2 uses the upper portion of both coils.
fRollout switch is manual reset.
"'"'The 48TJ028 units requires 2-in. industrial-grade filters capable of handling
face velocities of up to 625 ft/min {such as American Air Filter no. 5700 or
equivalent).
NOTE: The 48TJ016-028 units have a low-pressure switch (standard) located
on the suction side.