Roof Curb - Carrier 50TJ016-028 Installation, Start-Up And Service Instructions Manual

UNIT SIZE
NOMINAL CAPACITY (kW)
OPERATING WEIGHT (kg)
Unit
Al/Al*
Al/Cu*
Economizer

Roof Curb†

Electric Heat
COMPRESSOR
Quantity
No. Cylinders
Oil (ml)
REFRIGERANT TYPE
Operating Charge (kg)
Circuit 1**
Circuit 2
CONDENSER COIL
Rows...Fins/m
Total Face Area (sq m)
CONDENSER FAN
Nominal L/s
Quantity...Diameter (mm)
Motor BkW...r/s
EVAPORATOR COIL
Refrigerant Control
Rows...Fins/m
Total Face Area (sq m)
EVAPORATOR FAN
Quantity...Size (mm × mm)
Type Drive
Nominal L/s
Motor kW
Maximum Continuous BkW
Motor Frame Size
Fan r/s Range
Motor Bearing Type
Maximum Allowable r/s
Motor Pulley Pitch Diameter Min/Max (mm)
Nominal Motor Shaft Diameter (mm)
Fan Pulley Pitch Diameter (mm)
Nominal Fan Shaft Diameter (mm)
Belt, Quantity...Type...Length (mm)
Pulley Center Line Distance (mm)
Speed Change per Full Turn of
Movable Pulley Flange (r/s)
Movable Pulley Maximum Full Turns
From Closed Posiiton
Factory Setting
Factory Speed Setting (r/s)
Fan Shaft Diameter at Pulley (mm)
HIGH-PRESSURE SWITCH (kPa)
Standard Compressor Internal Relief (Differential)
Cutout
Reset (Auto.)
LOW-PRESSURE SWITCH (kPa)
Cutout
Reset (Auto.)
FREEZE PROTECTION THERMOSTAT (F)
Opens (C)
Closes (C)
OUTDOOR-AIR INLET SCREENS
Quantity...Size (mm)
RETURN-AIR FILTERS
Quantity...Size (mm)
MIST ELIMINATOR (CLEANABLE)
Quantity...Size (in.)
LEGEND
Al — Aluminum
Bhp — Brake Horsepower
Cu — Copper
TXV — Thermostatic Expansion Valve
*Evaporator coil fin material/condenser coil fin material.
†Weight of 356 mm roof curb.
**On 50TJ024,028 units, Circuit 1 consists of lower portion of both
the condenser and evaporator coils, and Circuit 2 consists of the
upper portion of both coils.
Table 1A — Physical Data, 50TJ016-028 (SI)
016
52.8
703
771
50
91
29
3401
8.16
2...669
2.06
4465
3...559
0.5...14.3
Copper Tubes, Aluminum or Copper Plate Fins, Face Split Type
TXV
2...669
1.66
2...254 × 254
Belt
2825
2.24
2.57
56H
18.23-22.47
Ball
25.8
109/135
22
142
30
1...B...1143
343-394
.85
3.5
19.50
30
6
024
70.3
952
1021
50
91
29
Semi-Hermetic
1 2
6 6
3781 ea
R-22
5.81
— 5.81
Enhanced Copper Tubes, Aluminum Lanced or Copper Fins
3...590
2.06
Propeller Type, 3 Blades
6700
2...762
1...15.8
4...590
1.66
Centrifugal Type
2...305 × 305
Belt
3775
5.59
7.08
213T
19.60-23.40
Ball
25.8
147/178
35
188
36.5
1...BX...1245
371-391
.63
5 6
3
21.50
36.5
—
2951
2206
48
152
−1
7
Cleanable
2...508 × 635 × 25
1...508 × 508 × 25
Throwaway††
3...406 × 508 × 50
2...406 × 635 × 50
— —
††The 50TJ028 units require 2-in. industrial-grade filters capable of
handling face velocities up to 3.2 m/sec (such as American Air
Filter no. 5700 or equivalent).
NOTE: These units have a low-pressure switch on the suction side
(standard).
028
87.9
975
1043
50
91
29
2
6
3781 ea
7.80
7.80
4...590
2.06
6700
2...762
1...17.9
Acutrol™ Feed Device
4...590
1.66
2...305 × 305
Belt
4719
7.46
8.80
215T
19.60-23.40
Ball
25.8
147/178
35
188
36.5
1...BX...1245
371-391
.63
6
3
21.50
36.5
1...24.62 × 65.50 × .88