Carrier 50TJ016-028 Installation, Start-Up And Service Instructions Manual page 6

Single-package rooftop units electric cooling with electric heat option
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UNIT 50TJ
NOMINAL CAPACITY (tons)
OPERATING WEIGHT
EconoMi$er
MoistureMiser Dehumidification
Package
COMPRESSOR/MANUFACTURER
Quantity...Model (Ckt 1, Ckt 2)
Capacity Stages (%)
Number of Refrigerant Circuits
Oil (oz) (Ckt 1, Ckt 2)
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Circuit 1*
Circuit 2
CONDENSER COIL
Rows...Fins/in.
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity...Diameter (in.)
Motor Hp...Rpm
Watts Input (Total)
EVAPORATOR COIL
Rows...Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
Motor Frame Size
Nominal Rpm High/Low
Fan r/s Range
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
Min/Max (in.)
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt, Quantity...Type...Length (in.)
Pulley Center Line Distance (in.)
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Speed
Factory Speed Setting (rpm
Fan Shaft Diameter at Pulley (in.)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
LOW-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
FREEZE PROTECTION THERMOSTAT (F)
Opens
Closes
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
RETURN-AIR FILTERS
Quantity...Size (in.)
POWER EXHAUST
LEGEND
Bhp — Brake Horsepower
TXV — Thermostatic Expansion Valve
*Circuit 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.
Table 1 — Physical Data
208/230, 460 v
2...ZR94KC
50, 50
81, 81
10,500
1
/
2
2...10 x 10
Belt
6000
3.7
1725
4.25
56H
Low-Medium Static
891-1179
High Static
1227-1550
Ball
1550
Low-Medium Static
3.1/4.1
High Static
3.7/4.7
7
/
8
Low-Medium Static
6.0
High Static
5.2
1
3
/
16
Low-Medium Static
1...BX...42
High Static
1...BX...42
13.5-15.5
Low-Medium Static
48
High Static
55
6
3.5
Low-Medium Static
1035
High Static
1389
1
3
/
16
1
/
Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
2
016
020
575 v
15
18
1550
1650
80
80
40
40
Scroll, Copeland
1...ZR108KC,
1...ZR94KC
55, 45
2
2
106, 81
R-22
TXV
10-10
15-5
10-10
12-3
Cross-Hatched
3
/
-in. Copper Tubes, Aluminum Lanced,
8
Aluminum Pre-Coated, or Copper Plate Fins
2...17
3...15
21.7
21.7
Propeller Type
10,500
3...22
3...22
...1050
1
/
...1050
2
1100
1100
Cross-Hatched
3
/
-in. Copper Tubes, Aluminum Lanced or
8
Copper Plate Fins, Face Split
2...17
3...15
17.5
17.5
Centrifugal Type
2...10 x 10
2...12 x 12
Belt
Belt
6000
7200
3.0
5
1725
1745
3.45
5.90
56H
184T
1159-1429
910-1095
1069-1287
Ball
Ball
1550
1550
4.3/5.3
4.9/5.9
4.9/5.9
7
/
1
1
/
8
8
6.4
9.4
8.0
1
3
/
1
7
/
16
16
1...BX...45
1...BX...50
1...BX...48
13.5-15.5
13.3-14.8
44
37
34
6
6
3.5
3.5
1296
1002
1178
1
3
/
1
7
/
16
16
426
320
27
44
30 ± 5
45 ± 5
Cleanable
2...20 x 25 x 1
1...20 x 20 x 1
Throwaway†
4...20 x 20 x 2
4...16 x 20 x 2
†The 50TJ028 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 50TJ016-028 units have a low-pressure switch (standard) located
on the suction side.
6
024
028
20
25
1700
1850
80
80
40
40
1...ZR125KC,
1...ZR16M3,
1...ZR108KC
1...ZR125KC
55, 45
60, 40
2
2
106,106
136, 106
16-0
20-13
13-6
13- 0
3...15
4...15
21.7
21.7
14,200
14,200
2...30
2...30
1...1075
1...1075
3400
3400
3...15
4...15
17.5
17.5
2...12 x 12
2...12 x 12
Belt
Belt
8000
10,000
7.5
10
1745
1740
8.7 [208/230, 575 v]
10.2 [208/230, 575 v]
9.5 [460 v]
11.8 [380, 460 v]
213T
215T
1002-1225
1066-1283
1193-1458
1332-1550
Ball
Ball
1550
1550
5.4/6.6
4.9/5.9
5.4/6.6
4.9/5.9
1
3
/
1
3
/
8
8
9.4
8.0
7.9
6.4
1
7
/
1
7
/
16
16
1...BX...53
2...BX...50
1...BX...50
2...BX...47
14.6-15.4
14.6-15.4
37
36
44
45
6
6
3.5
3.5
1120
1182
1328
1470
1
7
/
1
7
/
16
16

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