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

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Table 14 — Fan Performance Data (English) — 50TJ028* (25 Tons)

LEGEND

*Standard drive range for Low-Medium static drive on 50TJ028 is 888 to

1069 rpm. Standard drive range for High static drive on 50TJ028 is 1114 to
1341 rpm. Other rpms require a field-supplied drive.

NOTES:
1. Maximum continuous bhp is 13.3 (400 v) or 11.5 (220 v). The maximum

continuous watts is 11,000 (400 v) or 9600 (220 v). Do not adjust motor
rpm such that motor maximum bhp and/or watts is exceeded at the maxi-
mum operating cfm.

2. Static pressure losses (i.e., EconoMi$er) must be added to external static

pressure before entering fan performance table.

3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See

Table 16B for accessory/FIOP static pressure information.

5. Extensive motor and drive testing on these units ensures that the full brake

horsepower and watts range of the motor can be utilized with confidence.
Using your fan motors up to the watts or bhp rating shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not be
affected.

6. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details. For additional information on motor performance,
refer to Evaporator-Fan Motor Performance Table 19.

Table 15A — Accessory/FIOP Static Pressure (Pa) — 50TJ016

LEGEND

FIOP —

Factory-Installed Option

NOTES:
1. The static pressure must be added to external static pressure.

The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance tables to deter-
mine blower R/s and watts.

2. Heaters are rated at 400 v.

Table 15B — Accessory/FIOP Static Pressure (in. wg) — 50TJ016

LEGEND

FIOP —

Factory-Installed Option

NOTES:
1. The static pressure must be added to external static pressure.

The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance tables to deter-
mine blower rpm and watts.

2. Heaters are rated at 400 v.

AIRFLOW

(cfm)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

Rpm

Bhp

Watts

7,000

845

3.26

2693

909

3.60 2979

969

3.96 3272

1028

4.32 3574

1083

4.70 3883

1137

5.08

4,200 1189

5.47

4,524

7,500

896

3.82

3156

956

4.17 3450

1014

4.54 3752

1069

4.91 4060

1123

5.29 4375

1174

5.68

4,698 1224

6.08

5,026

8,000

948

4.43

3667

1005

4.80 3969

1060

5.17 4278

1112

5.56 4593

1163

5.94 4915

1213

6.34

5,243 1261

6.75

5,577

8,500

1001

5.11

4226

1054

5.49 4537

1106

5.87 4853

1156

6.26 5175

1205

6.66 5504

1253

7.06

5,838 1299

7.47

6,177

9,000

1053

5.85

4836

1104

6.23 5155

1154

6.63 5478

1202 7.02 5808

1248

7.43 6142

1294

7.84

6,483 1338

8.26

6,828

9,500

1106

6.65

5498

1155

7.04 5824

1202

7.44 6155

1248

7.85 6492

1293

8.26 6833

1336

8.68

7,179 1379

9.11

7,530

10,000

1159

7.52

6214

1206

7.92 6547

1251

8.33 6886

1295

8.74 7229

1338

9.16 7577

1380

9.59

7,929 1421 10.02

8,286

10,500

1213

8.45

6984

1257

8.86 7325

1300

9.28 7671

1342

9.70 8020

1384 10.13 8375

1424 10.56

8,733 1464 11.00

9,096

11,000

1266

9.45

7810

1309

9.87 8159

1350 10.29 8511

1391 10.73 8868

1431 11.16 9229

1470 11.60

9,594 1508 12.05

9,963

11,250

1293

9.97

8245

1334 10.40 8597

1375 10.83 8953

1415 11.26 9313

1454 11.70 9677

1493 12.15 10,045 1530 12.60 10,417

AIRFLOW

(cfm)

AVAILABLE EXTERNAL

STATIC PRESSURE (in. wg)

1.6

1.8

Rpm

Bhp

Watts

Rpm

Bhp

Watts

7,000

1239

5.87

4,854 1288

4.91 5191

7,500

1272

6.48

5,362 1320

5.56 5703

8,000

1307

7.16

5,917 1353

6.26 6263

8,500

1344

7.89

6,523 1388

7.02 6873

9,000

1382

8.68

7,179 1424

7.85 7534

9,500

1421

9.54

7,887 1462

8.74 8247

10,000

1461 10.46

8,648 1501

9.70 9014

10,500

1503 11.45

9,464 1541 10.73 9835

11,000

1546 12.50 10,336

—

11,250

—

Bhp

—

Brake Horsepower

FIOP

—

Factory-Installed Option

Watts —

Input Watts to Motor

COMPONENT

L/s

2125

2360

2831

3400

3525

EconoMi$er

Glycol Coil

109

114

Electric Heat (kW)

22.5
38.2
55.4

15
19
25

17
22
27

22
27
35

27
35
46

30
37
48

COMPONENT

CFM

4500

5000

6000

7200

7500

EconoMi$er

0.04

0.05

0.07

0.09

0.10

Glycol Coil

0.22

0.26

0.35

0.44

0.46

Electric Heat (kW)

22.5
38.2
55.4

0.06
0.08
0.10

0.07
0.09
0.11

0.09
0.11
0.14

0.11
0.14
0.18

0.12
0.15
0.19

Summary of Contents for 50TJ016-028

Page 1: ...s shown Ductwork can be secured to roof curb or horizontal adapter roof curb before unit is set in place Curb or horizontal adapter roof curb should be level This is necessary to permit unit drain to function properly Unit level ing tolerance is 5 mm per linear m 1 16 in per linear ft in any direction Refer to Accessory Roof Curb or Horizontal Adapter Roof Curb Installation Instructions for additi...

Page 2: ...heaters NOTE To prevent the hazard of stagnant water build up in the drain pan of the indoor section unit can only be pitched as shown DIMENSIONS degrees and inches UNIT A B Deg in Deg in ALL 28 45 28 43 PKG NO REF CURB HEIGHT DESCRIPTION CRRFCURB010A00 1 2 305 Standard Curb 14 High CRRFCURB011A00 2 0 610 Standard Curb for Units Requiring High Installation CRRFCURB012A00 2 0 610 Side Supply and Re...

Page 3: ...ers prior to rigging 4 Rig by inserting hooks into unit base rails as shown Use corner post from packaging to protect coil from damage Use bumper boards for spreader bars 5 Weights do not include optional EconoMi er See Fig 4 and 5 for EconoMi er weight See Tables 1A and 1B for MoistureMiser weight 6 Weights given are for aluminum evaporator and condenser coil plate fins Fig 3 Rigging Details UNIT...

Page 4: ...assure proper con denser fan operation Local codes or jurisdiction may prevail 7 With the exception of clearance for the con denser coil and the damper power exhaust as stated in Note 6 a removable fence or barricade requires no clearance 8 Dimensions are from outside of corner post Allow 0 5 16 8 on each side for top cover drip edge 9 A 90 degree elbow must be installed on the supply ductwork bel...

Page 5: ...diction may prevail 7 With the exception of clearance for the condenser coil and the damper power exhaust as stated in note no 5 a removable fence or barricade requires no clearance 8 Dimensions are from outside of corner post Allow 0 5 16 8 on each side for top cover drip edge 9 See drawing 50TJ500352 for service option details 10 A 90 degree elbow must be installed on the supply ductwork below t...

Page 6: ... 3776 4720 4720 Motor kW 2 76 5 59 7 46 7 46 Motor Nominal r s 28 8 29 1 29 0 29 0 Maximum Continuous BkW 3 17 400 v 2 57 220 v 7 68 9 92 400 v 8 60 220 v 9 92 400 v 8 60 220 v Motor Frame Size 56H 213T 215T 215T Fan r s Range Low Medium Static 12 38 16 38 12 8 15 2 14 8 17 8 14 8 17 8 High Static 17 05 21 67 16 6 20 3 18 6 22 4 18 6 22 4 Motor Bearing Type Ball Ball Ball Ball Maximum Allowable r ...

Page 7: ...000 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 155...

Page 8: ...onnection A 216 mm x 19 mm 81 2 in x 3 4 in diameter nipple and a 51 mm x 19 mm 2 in x 3 4 in diameter pipe nipple are coupled to a standard 19 mm 3 4 in diameter elbow to provide a straight path down through holes in unit base rails see Fig 10 A trap at least 100 mm 4 in deep must be used If only one drain connection is trapped other connection must be plugged For vertical supply and return units...

Page 9: ...uivalent single leads of 1 0 mm2 no 18 AWG American Wire Gage U S A col ored wire from subbase terminals through conduit in unit to low voltage connections as shown on unit label wiring diagram and in Fig 12 NOTE For wire runs up to 15 m 50 ft use 1 0 mm2 no 18 AWG insulated wire 35 C minimum For 15 to 23 m 50 to 75 ft use 1 5 mm2 no 16 AWG insulated wire 35 C mini mum For over 23 m 75 ft use 2 5 ...

Page 10: ...8 2 55 1 84 90 4 7 10 5 38 2 55 1 90 90 55 4 80 0 95 100 4 7 10 5 55 4 80 0 101 110 028 Standard Fan 220 198 242 45 4 345 38 5 293 2 1 0 6 3 10 0 32 0 139 175 4 7 10 5 144 175 400 360 440 23 7 198 21 8 167 2 1 0 3 4 10 0 14 0 72 90 4 7 10 5 77 100 22 5 32 5 72 90 4 7 10 5 22 5 32 5 77 100 38 2 55 1 86 90 4 7 10 5 38 2 55 1 92 100 55 4 80 0 98 110 4 7 10 5 55 4 80 0 103 110 028 High Static Fan 400 ...

Page 11: ...and close the door The handle should fit over the end of the shaft when the door is closed 8 The handle must be in the OFF position to open the con trol box door OPTIONAL CONVENIENCE OUTLET On units with optional convenience outlet a 115 v GFI ground fault inter rupt convenience outlet receptacle is provided for field wiring Field wiring should be run through the 7 8 in knockout pro vided in the b...

Page 12: ...ALLA TION Perform the following procedure to install the outdoor air enthalpy sensor part no CROUTENT001A00 1 Remove the outdoor air temperature sensor cover See Fig 21 Save cover and screws 2 Disconnect the wiring from the installed outdoor air tem perature sensor See Fig 22 3 Use a 1 4 in nut driver to remove the 2 screws securing the outdoor air temperature sensor to the sheet metal 4 Mount the...

Page 13: ...sed perform the following 1 Determine the value at which you want the minimum position of the dampers to begin opening to allow a greater amount of outdoor air to enter The range is 800 to 1 400 ppm 2 Locate the CO2 SP PPM potentiometer and adjust to the desired set point See Fig 16 MECHANICAL COOLING LOCKOUT Determine the outdoor air temperature at which you want the mechanical cooling compressor...

Page 14: ...emperature Outdoor Air Enthalpy Return Air Temperature Return Air Enthalpy Dry Bulb X Single Enthalpy X Differential Temperature X X Differential Enthalpy X X SETTINGS A B C D Dry Bulb F 73 69 66 63 Single Enthalpy Btu lb 27 25 24 22 Differential Temperature F Not Adjustable 2 2 2 2 Differential Enthalpy Btu lb Not Adjustable 1 1 1 1 POTENTIOMETER DEFAULT SETTING CO2 SP PPM 1 000 MECH CLG LOCKOUT ...

Page 15: ... resistant metal for baffles Use field supplied screws to attach baffles to unit Screws should be 6 3 mm 1 4 in diameter and 15 9 mm 5 8 in long Drill required screw holes for mounting baffles Install Motormaster III Controls Only one Motormaster III control is required per unit Sensor Install the sensor for thermistor input control in the location shown in Fig 26 and 27 Connect sensor leads to th...

Page 16: ...brackets with top flange facing toward coil reusing screws from Step 1 See Fig 29 and 30 3 Remove and save screws on the front and end of con denser See Fig 31 4 Slide hood top flange under top cap Reinstall screws in top cap 5 Slide angle baffle between brackets and hood 6 Secure the hood by installing the 19 screws supplied with instructions See Fig 32 Be sure to support parts as screws are remo...

Page 17: ...NGLE LEFT HAND AND RIGHT HAND BRACKETS HOOD TOP BRACKETS CAP SCREW LOCATIONS Fig 28 Condenser Hood Screw Location Fig 29 Hood Components Fig 30 Hood Brackets Fig 31 Top and End of Condenser Fig 32 Completed Hood Assembly ...

Page 18: ...tion should be a well ventilated area to sense average humidity 2 Route thermostat cable or equivalent single leads of col ored wire from Humidistat terminals through conduit in unit to the low voltage connection on the 2 pole terminal strip TB3 as shown in Fig 33 and Fig 34 Fig 33 Typical MoistureMiser Dehumidification Package Control Box Fig 34 Typical MoistureMiser Dehumidification Package Humi...

Page 19: ... 1B Do not operate unit without return air filters Outdoor Air Inlet Screens Outdoor air inlet screens must be in place before operating unit Accessory EconoMi er Adjustment Remove filter access panel Check that the outdoor air damper is closed and return air damper is open EconoMi er operation and adjustment is described in Base Unit Operation section below and EconoMi er Adjustment section on pa...

Page 20: ...er coils See Fig 35 As the warm liquid passes through the subcooler coils it is exposed to the cold supply airflow coming off the evaporator coils and the liquid is further cooled to a temperature approach ing the evaporator coil leaving air temperature The state of the refrigerant leaving the subcooler coils is a highly subcooled liq uid refrigerant The liquid then enters a thermostatic expansion...

Page 21: ... 1 26 1 47 16 3 1 42 1 65 17 7 1 58 1 84 19 0 1 75 2 03 2266 11 9 1 09 1 26 13 6 1 24 1 45 15 2 1 41 1 64 16 6 1 57 1 83 18 0 1 73 2 02 19 2 1 90 2 22 2408 12 4 1 24 1 44 14 1 1 40 1 63 15 6 1 57 1 83 17 0 1 73 2 02 18 3 1 90 2 22 19 5 2 07 2 42 2549 13 0 1 40 1 64 14 5 1 57 1 83 16 0 1 74 2 03 17 3 1 91 2 23 18 6 2 08 2 43 19 8 2 26 2 63 2691 13 5 1 58 1 84 15 0 1 75 2 04 16 4 1 93 2 25 17 7 2 10...

Page 22: ...9 9 3 79 4 30 3305 13 8 2 45 2 78 14 9 2 68 3 04 15 9 2 91 3 31 16 8 3 15 3 58 17 8 3 40 3 86 18 7 3 65 4 15 19 6 3 91 4 44 20 4 4 16 4 73 3541 14 6 2 84 3 23 15 6 3 07 3 49 16 6 3 31 3 77 17 5 3 56 4 04 18 4 3 81 4 33 19 3 4 06 4 61 20 1 4 32 4 91 20 9 4 58 5 20 3777 15 5 3 27 3 72 16 4 3 51 3 99 17 3 3 75 4 26 18 2 4 00 4 54 19 1 4 25 4 83 19 9 4 51 5 12 20 7 4 77 5 41 21 5 5 03 5 71 4013 16 3 3...

Page 23: ...5 2 60 2245 1063 2 84 2448 1138 3 07 2652 1209 3 31 2858 6000 845 2 40 2068 931 2 64 2273 1011 2 87 2478 1087 3 11 2685 1160 3 35 2893 1229 3 60 3103 6300 878 2 68 2309 961 2 92 2518 1039 3 16 2728 1112 3 41 2939 1183 3 65 3151 1250 3 90 3365 6600 912 2 98 2566 992 3 22 2780 1067 3 47 2994 1138 3 72 3209 1207 3 97 3425 1273 4 22 3642 6900 946 3 29 2841 1023 3 55 3059 1096 3 80 3277 1165 4 05 3496 ...

Page 24: ...EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 7 000 845 3 26 2693 909 3 60 2979 969 3 96 3272 1028 4 32 3574 1083 4 70 3883 1137 5 08 4 200 1189 5 47 4 524 7 500 896 3 82 3156 956 4 17 3450 1014 4 54 3752 1069 4 91 4060 1123 5 29 4375 1174 5 68 4 698 1224 6 08 5 026 8 000 948 4 43 3667 10...

Page 25: ...er 17 22 27 30 35 Glycol Coil 86 109 144 164 191 Electric Heat kW 22 5 38 2 55 4 22 28 36 27 35 46 37 45 57 43 53 65 50 61 75 COMPONENT CFM 6000 7200 9000 10 000 11 250 EconoMi er 0 07 0 09 0 11 0 12 0 14 Glycol Coil 0 35 0 44 0 58 0 66 0 77 Electric Heat kW 22 5 38 2 55 4 0 09 0 11 0 14 0 11 0 14 0 18 0 15 0 18 0 23 0 17 0 21 0 26 0 20 0 25 0 30 UNIT SIZE 50TJ UNIT NOMINAL kW L s PER kW 40 6 54 6...

Page 26: ... A complete recharge should be four ounces 89 mL less than the original oil charge When a compressor is exchanged in the field it is possible that a major portion of the oil from the replaced compressor may still be in the system While this will not affect the reliability of the replacement compressor the extra oil will add rotor drag and increase power usage To remove this excess oil an access va...

Page 27: ...to decrease speed In creasing fan speed increases load on motor Do not ex ceed maximum speed specified in Tables 1A and 1B See Table 8 for air quantity limits 5 Set movable flange at nearest keyway of pulley hub and tighten setscrew See Tables 1A and 1B for speed change for each full turn of pulley flange 6 Replace and tighten belts See Belt Tension Adjustment section on page 28 To align fan and m...

Page 28: ...ub recess with permagum if rubber hubcap is missing Condenser Fan Adjustment High Static Option Size 028 Only Each fan is supported by a formed wire mount bolted to a fan deck and covered with a wire guard The exposed end of the fan motor shaft is protected from weather by grease If the fan motor must be removed for service or replacement be sure to regrease fan shaft and rein stall fan cover reta...

Page 29: ...CHART Use the above temperature and pressure readings and find the intersec tion point on the cooling charging chart If intersection point on chart is above line add refrigerant If intersection point on chart is below line carefully recover some of the charge Re check suction pressure as charge is adjusted NOTE Indoor air CFM must be within normal operating range of unit All outdoor fans must be o...

Page 30: ... thermistor is located in the winding head at the lower end of the motor A fifth sensor is located in the discharge port to control discharge gas superheat The thermistors are connected to the electronic protection module at terminals S1 and S2 When the resistance of any thermistor reaches tripping val ue the electronic protection module interrupts the control line and causes the compressor to swi...

Page 31: ...pressor overtemperature switch acti vates that refrigerant circuit will be automatically locked out by the CLO To reset manually move the thermostat setting FREEZE PROTECTION THERMOSTAT FPT An FPT is located on the top and bottom of the evaporator coil It detects frost build up and turns off the compressor allowing the coil to clear Once the frost has melted the compressor can be reenergized Relie...

Page 32: ...32 Refer to Fig 44 for typical unit wiring schematic Fig 44 Typical Wiring Schematic 50TJ024 400 V Shown ...

Page 33: ...33 Refer to Fig 45 for component arrangement Fig 44 Typical Wiring Schematic 50TJ024 400 V Shown cont Fig 45 Typical Component Arrangement 50TJ024 Shown ...

Page 34: ...vercurrent Protection PL Plug Assembly PRI Primary TB Terminal Block TC Thermostat Cooling TH Thermostat Heating TRAN Transformer Terminal Marked Terminal Unmarked Terminal Block Splice Factory Wiring Field Control Wiring Option Accessory Wiring To indicate common potential only not to represent wiring NOTES 1 Compressor and fan motor s thermally protected Three phase motors pro tected against pri...

Page 35: ...eplace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil...

Page 36: ... MIN POS to 100 to verify operation and then set to correct setting EconoMi er Changeover Set Point Set Too High or Too Low Set at correct value See Table 6 Discharge Air Thermistor Faulty If STATUS light is flashing 4 flashes Discharge Air Thermistor is faulty Check wiring or replace sensor Outdoor Air Temperature Sensor Faulty If STATUS light is flashing 5 flashes Outdoor Air Temperature Sensor ...

Page 37: ......

Page 38: ...scontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 015 056 Printed in U S A Form 50TJ C17SI Pg 38 5 01 Replaces 50TJ C16SI Book 1 Tab 1b Copyright 2001 Carrier Corporation ...

Page 39: ......

Page 40: ...N HOUSING ORIFICE AND VERIFY SETSCREW IS TIGHT VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED VERIFY THAT SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION VERIFY THAT CRANKCASE HEATER HAS BEEN ENERGIZED FOR 24 HOURS SIZE 028 AND UNITS WITH OPTIONAL MOISTUREMISER DEHUMIDIFICATION SYSTEM ONLY II START UP ELECTRICAL SUPPLY FAN AMPS EXHAUST FAN AMPS TEMPERATURES OUTDOOR AIR...

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