Carrier 50TJ016-028- Manual

Carrier 50TJ016-028

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Table of Contents:

  • Page 3 – Fig. 3 — Rigging Details
  • Page 4 – ig
  • Page 6 – Table 1 — Physical Data
  • Page 7 – Fig. 7 — Concentric Duct Air Distribution; Fig. 8 — Concentric Duct Details
  • Page 8 – Step 6 — Make Electrical Connections; Fig. 10 — Make Electrical Connections; THERMOSTAT ASSEMBLY; Fig. 12 — Field Control Thermostat Wiring
  • Page 9 – Table 2 — Electrical Data
  • Page 11 – Step 7 — Make Outdoor-Air Inlet Adjustments; — End View
  • Page 12 – Table 3 — Heat Anticipator Settings; Step 8 — Install Outdoor-Air Hood —; UNIT; Fig. 18 — Outdoor-Air Hood Component Location; Fig. 17 — EconoMi$er Control Module Location
  • Page 13 – Fig. 19 — Seal Strip Location
  • Page 14 – If a potentiometer fails, its setting will default to the values; Table 4 — EconoMi$er Switchover Control Strategy
  • Page 15 – Step 9 — Install All Accessories —; After all the; Fig. 24 — Typical EconoMi$er Sensor Wiring
  • Page 16 – Fig. 25 — Wind Baffle Details
  • Page 17 – Fig. 26 — Motormaster® I Sensor Locations; Fig. 27 — Motormaster III Sensor Locations; LLSV; LPS; TB; TRAN —; 0TJ016 50TJ020
  • Page 18 – Table 7 — Air Quantity Limits; Fig. 29 — Typical MoistureMiser Dehumidification
  • Page 23 – Base Unit Operation
  • Page 24 – When the humidistat is satisfied, the humidistat internal; SERVICE; Inspect unit interior at beginning of each heat-; Lubrication; Fig. 30 — MoistureMiser Operation Diagram
  • Page 25 – Evaporator Fan Service and Replacement; Fig. 31 — Evaporator-Fan Pulley Alignment
  • Page 26 – Motor Section
  • Page 27 – Table 15 — EconoMi$er Control Module Flash Code Identification
  • Page 28 – Fig. 36 — Cooling Charging Chart
  • Page 29 – ELECTRIC HEAT
  • Page 31 – LEGEND AND NOTES FOR FIG. 37 AND 38
  • Page 32 – TROUBLESHOOTING; Refer to Tables 16-18 for troubleshooting details.; Table 16 — Cooling Service Analysis
  • Page 33 – Table 17 — EconoMi$er Troubleshooting
  • Page 34 – SERVICE TRAINING
  • Page 36 – ELECTRICAL; VERIFY REFRIGERANT CHARGE USING CHARGING CHART ON PAGE 28.; GENERAL
Loading the manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111

Catalog No. 535-034

Printed in U.S.A.

Form 50TJ-17SI

Pg 1

2-01

Replaces: 50TJ-14SI

Book 1

Tab

1b

Installation, Star t-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Step 1 — Provide Unit Support

. . . . . . . . . . . . . . . . . . . . . . 1

•

ROOF CURB

•

ALTERNATE UNIT SUPPORT

Step 2 — Rig and Place Unit

. . . . . . . . . . . . . . . . . . . . . . . . . 1

•

POSITIONING

•

ROOF MOUNT

Step 3 — Field Fabricate Ductwork

. . . . . . . . . . . . . . . . . . 7

Step 4 — Make Unit Duct Connections

. . . . . . . . . . . . . . .7

Step 5 — Trap Condensate Drain

. . . . . . . . . . . . . . . . . . . . 7

Step 6 — Make Electrical Connections

. . . . . . . . . . . . . . 8

•

FIELD POWER SUPPLY

•

FIELD CONTROL WIRING

•

OPTIONAL NON-FUSED DISCONNECT

•

OPTIONAL CONVENIENCE OUTLET

Step 7 — Make Outdoor-Air Inlet

Adjustments

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

•

MANUAL OUTDOOR-AIR DAMPER

•

OPTIONAL ECONOMI$ER

Step 8 — Install Outdoor-Air Hood

. . . . . . . . . . . . . . . . . .12

Step 9 — Install All Accessories

. . . . . . . . . . . . . . . . . . . .15

•

MOTORMASTER® I CONTROL INSTALLATION

•

MOTORMASTER III CONTROL INSTALLATION

Step 10 — Install Humidistat for Optional

MoistureMiser Dehumidification Package

. . . . . . . . .16

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-24

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-31

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32,33

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing air-conditioning equipment can be

hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install, re-
pair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.

INSTALLATION

Step 1 — Provide Unit Support

ROOF CURB — Assemble and install accessory roof curb or
horizontal adapter roof curb in accordance with instructions
shipped with the curb or horizontal adapter. Accessory roof
curb and horizontal adapter roof curb and information required
to field fabricate a roof curb or horizontal adapter roof curb are
shown in Fig. 1 and 2. Install insulation, cant strips, roofing,
and counter flashing as shown. Ductwork can be secured to
roof curb before unit is set in place.

Curb or adapter roof curb should be level. This is necessary

to permit unit drain to function properly. Unit leveling toler-
ance is

±

1

/

16

in. per linear ft in any direction. Refer to Accesso-

ry Roof Curb or Horizontal Adapter Roof Curb Installation In-
structions for additional information as required.
ALTERNATE UNIT SUPPORT — When the curb or adapter
cannot be used, support unit with sleepers using unit curb or
adapter support area. If sleepers cannot be used, support long
sides of unit with a minimum of 3 equally spaced 4-in. x 4-in.
pads on each side.

Step 2 — Rig and Place Unit —

Inspect unit for

transportation damage. File any claim with transportation
agency. Keep unit upright, and do not drop. Use spreader bars
over unit to prevent sling or cable damage. Rollers may be used
to move unit across a roof. Level by using unit frame as a refer-
ence; leveling tolerance is

±

1

/

16

in. per linear ft in any direc-

tion. See Fig. 3 for additional information. Unit weight is
shown in Table 1.

Four lifting holes are provided in ends of unit base rails as

shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING — Provide clearance around and above unit
for airflow, safety, and service access (Fig. 4 and 5).

Do not install unit in an indoor location. Do not locate air in-

lets near exhaust vents or other sources of contaminated air.

Although unit is weatherproof, guard against water from

higher level runoff and overhangs.
ROOF MOUNT — Check building codes for weight distribu-
tion requirements.

Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.

IMPORTANT: Units have high ambient operating lim-
its. If limits are exceeded, the unit will automatically
lock the compressor out of operation. Manual reset will
be required to restart the compressor.

IMPORTANT: The gasketing of the unit to the roof curb
or adapter roof curb is critical for a leak-proof seal.
Install gasket supplied with the roof curb or adapter roof
curb as shown in Fig. 1. Improperly applied gasket can
result in air leaks and poor unit performance.

50TJ016-028

Single-Package Rooftop Units

Electric Cooling with Electric Heat Option

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Summary

Page 3 - Fig. 3 — Rigging Details

3 NOTE: For preassembled horizontal adapter roof curb par t no.CRRFCURB013A00, the accessory kit includes a factory-designed,high-static, transition duct. For horizontal curb part no.CRRFCURB012A00, a field-supplied transition duct is required. Fig. 2 — Horizontal Adapter Roof Curb and Roof Curb NOT...

Page 4 - ig

4 POWER EXHAUST/BAROMETRIC RELIEF (ACCESSORY ONLY) F ig . 4 — Ba se U n it D imen s io n s , 50 T J 016 ,020 UNIT ST D UNIT W E IGHT E C ONOM I$E R W E IGHT CORNE R (A ) CORNE R (B ) CORNE R (C ) CORNE R (D ) DIM A D IM B D IM C Lb K g Lb K g Lb K g Lb K g Lb K g Lb K g F t-i n . mm F t-i n . mm F t...

Page 6 - Table 1 — Physical Data

6 Table 1 — Physical Data LEGEND *Circuit 1 uses the lower por tion of condenser coil and lower por tion of evap- orator coils; and Circuit 2 uses the upper por tion of both coils. †The 50TJ028 units requires 2-in. industrial-grade filters capable of handling face velocities of up to 625 ft/min (suc...

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