7
Table 1B — Physical Data, 50TJ016-028 (English)
LEGEND
*Circuit 1 uses the lower portion of condenser coil and lower portion of evapo-
rator coils, and Circuit 2 uses the upper portion of both coils.
†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).
UNIT SIZE
016
024
028
(Standard)
028
(High Static DEC Option)
NOMINAL CAPACITY (tons)
15
20
25
25
OPERATING WEIGHT (lbs)
1560
1800
1950
1950
EconoMi$er
80
80
80
80
MoistureMiser Dehumidification Package
40
40
40
40
COMPRESSOR
Scroll
Quantity...Model (Ckt 1, Ckt 2)
2...ZR108KC
1...ZR16M3,
1...ZR125KC
1...ZR19M3,
1...ZR16M3
1...ZR19M3,
1...ZR16M3
Capacity Stages (%)
50/50
55/45
60/40
60/40
Number of Refrigerant Circuits
2
2
2
2
Oil (oz) (Ckt 1, Ckt 2)
106
136, 106
136, 136
136, 136
REFRIGERANT TYPE
R-22
Expansion Device
TXV
Operating Charge (lb-oz)
Circuit 1*
10-10
14-14
20-0
20-0
Circuit 2
10-10
12-10
13-5
13-5
CONDENSER COIL
Cross-Hatched
3
/
8
-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
Rows...Fins/in.
2...17
3...15
4...15
4...15
Total Face Area (sq ft)
21.7
21.7
21.7
21.7
CONDENSER FAN
Propeller Type
Propeller Type
Nominal Cfm
14,200
18,200
Quantity...Diameter (in.)
2...30
2...30
Motor Hp...Rpm
1...1075
5...1075
Watts Input (Total)
3400
7800
EVAPORATOR COIL
Cross-Hatched
3
/
8
-in. Copper Tubes, Aluminum Lanced
or Copper Plate Fins, Face Split
Rows...Fins/in.
2...17
3...15
4...15
4...15
Total Face Area (sq ft)
17.5
17.5
17.5
17.5
EVAPORATOR FAN
Centrifugal Type
Quantity...Size (in.)
2...10 x 10
2...12 x 12
2...12 x 12
2...12 x 12
Type Drive
Belt
Belt
Belt
Belt
Nominal Cfm
6000
8000
10,000
10,000
Motor Hp
3.7
7.5
10
10
Motor Nominal Rpm
1438
1455
1450
1450
Maximum Continuous Bhp
4.25 (400 v),
3.45 (220 v)
10.3
13.3 (400 v),
11.5 (220 v)
13.3 (400 v),
11.5 (220 v)
Motor Frame Size
56H
213T
215T
215T
Fan Rpm Range
Low-Medium Static
743- 983
769- 909
888-1069
888-1069
High Static
1023-1300
994-1216
1114-1341
1114-1341
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Allowable Rpm
1550
1550
1550
1550
Motor Pulley Pitch Diameter (in.)
Low-Medium Static
3.1/4.1
5.5/6.5
4.9/5.9
4.9/5.9
High Static
3.7/4.7
5.4/6.6
4.9/5.9
4.9/5.9
Nominal Motor Shaft Diameter (in.)
7
/
8
1
3
/
8
1
3
/
8
1
3
/
8
Fan Pulley Pitch Diameter (in.)
Low-Medium Static
6.0
10.4
8.0
8.0
High Static
5.2
7.9
6.4
6.4
Nominal Fan Shaft Diameter (in.)
13/16
17/16
17/16
17/16
Belt, Quantity...Type...Length (in.)
Low-Medium Static
1...BX...42
1...BX...54
2...BX...50
2...BX...50
High Static
1...BX...42
1...BX...50
2...BX...47
2...BX...47
Pulley Center Line Distance (in.)
13.5-15.5
14.6-15.4
14.6-15.4
14.6-15.4
Speed Change per Full Turn of
Movable Pulley Flange (Rpm)
Low-Medium Static
48
28
36
36
High Static
55
37
45
45
Movable Pulley Maximum Full Turns
From Closed Position
Low-Medium Static
5
5
5
5
High Static
5
6
5
5
Factory Setting
3.5
3
3
3
Factory Speed Setting (Rpm)
Low-Medium Static
815
825
960
960
High Static
1106
1105
1205
1205
HIGH-PRESSURE SWITCH (psig)
Cutout
426
Reset (Auto.)
320
LOW-PRESSURE SWITCH (psig)
Cutout
27
Reset (Auto.)
44
FREEZE PROTECTION THERMOSTAT (F)
Opens
30 ± 5
Closes
45 ± 5
ELECTRONIC PROTECTION MODULE
Cutout (ohms)
4500 ± 900
4500 ± 900
4500 ± 900
4500 ± 900
Reset (ohms)
2750 ± 450
2750 ± 450
2750 ± 450
2750 ± 450
OUTDOOR-AIR INLET SCREENS
Cleanable
Quantity...Size (in.)
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS
Throwaway†
Quantity...Size (in.)
4...20 x 20 x 2
4...16 x 20 x 2
Bhp
—
Brake Horsepower
DEC
—
Design Enhancement Center
TXV
—
Thermostatic Expansion Valve
Содержание 50TJ016-028
Страница 32: ...32 Refer to Fig 44 for typical unit wiring schematic Fig 44 Typical Wiring Schematic 50TJ024 400 V Shown ...
Страница 37: ......
Страница 39: ......