Carrier 50TJ016-028 Installation, Start-Up And Service Instructions Manual
  1. Manuals
  2. Brands
  3. Carrier Manuals
  4. Air Conditioner
  5. 50TJ016-028
  6. Installation, start-up and service instructions manual
Carrier 50TJ016-028 Installation, Start-Up And Service Instructions Manual

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

Single-package rooftop units 50 hz
Hide thumbs Also See for 50TJ016-028:
Table of Contents

Advertisement

Quick Links

CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Step 1 - Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
• ROOF CURB
Step 2 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 1
• POSITIONING
• ROOF MOUNT
Step 3 - Field Fabricate Ductwork . . . . . . . . . . . . . . . 8
Step 4 - Make Unit Duct Connections . . . . . . . . . . . 8
Step 5 - Trap Condensate Drain . . . . . . . . . . . . . . . . . 8
Step 6 - Make Electrical Connections . . . . . . . . . . . 9
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 8 - Install Outdoor-Air Hood . . . . . . . . . . . . . . 12
Step 9 - Install All Accessories. . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-26
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-34
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . .35,36
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should in-
stall, repair, 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.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 015-056
Book 1
Tab
1b
Installation, Start-Up and
Service Instructions
Page
Printed in U.S.A.
Single-Package Rooftop Units
IMPORTANT: Units have high ambient operating limits. If
limits are exceeded, the unit will automatically lock the
compressor out of operation. Manual reset will be required
to restart the compressor.

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 felt,
and counter flashing as shown. Ductwork can be secured to roof
curb or horizontal adapter roof curb before unit is set in place.
IMPORTANT: The gasketing of the unit to the roof curb or
horizontal adapter roof curb is critical for a watertight seal.
Install gasket supplied with the roof curb or horizontal
adapter roof curb as shown in Fig. 1 and 2. Im-
properly applied gasket can result in air leaks and poor unit
performance.
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 (±
any direction. Refer to Accessory Roof Curb or Horizontal
Adapter Roof Curb Installation Instructions for additional in-
formation as required.
ALTERNATE UNIT SUPPORT - When the curb or hori-
zontal adapter roof curb cannot be used, support unit with
sleepers using unit curb or adapter roof curb support area. If
sleepers cannot be used, support long sides of unit with a mini-
mum of 3 equally spaced 100 mm x 100 mm (4 in. x 4 in.)
pads on each side.
Step 2 - Rig and Place Unit -
transportation damage. File any claim with transportation
agency. Keep unit upright, and do not drop. Use bumper boards
for 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 reference; leveling tolerance is ± 5 mm per lin-
1
ear m (±
/
in. per linear ft) in any direction. See Fig. 3
16
for additional information. Unit rigging weight is shown in
Fig. 3. Refer to Tables 1A and 1B for operating weights.
Four lifting holes are provided in ends of unit base rails as
shown in Fig. 3-5. 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 distri-
bution requirements.
Form 50TJ-C17SI
Pg 1
50TJ016-028
50 Hz
1
/
in. per linear ft) in
16
Inspect
unit
for
5-01
Replaces: 50TJ-C16SI

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 50TJ016-028 and is the answer not in the manual?

Questions and answers

Related Manuals for Carrier 50TJ016-028

Summary of Contents for Carrier 50TJ016-028

  • Page 1: Table Of Contents

    50TJ016-028 Single-Package Rooftop Units 50 Hz Installation, Start-Up and Service Instructions CONTENTS IMPORTANT: Units have high ambient operating limits. If limits are exceeded, the unit will automatically lock the Page compressor out of operation. Manual reset will be required SAFETY CONSIDERATIONS ..... . 1 to restart the compressor.
  • Page 3 NOTE: For preassembled horizontal adapter part no. CRRFCURB013A00, the accessory kit includes a factory-designed, regain, high-static, transition duct. For horizontal curb part no. CRRFCURB012A00, a field-supplied tran- sition duct is required. Fig. 2 — Horizontal Adapter and Roof Curb Details DIMENSIONS MAXIMUM UNIT...
  • Page 4 NOTES: 1. Refer to print for roof curb accessory dimensions. 2. Dimensions in ( ) are in millimeters. Center of Gravity. Direction of airflow. 5. Ductwork to be attached to accessory roof curb only. 6. Minimum clearance: • Rear, 7′-0″ (2134) for coil removal. This dimension can be reduced to 4′-0″...
  • Page 5 LEGEND KO — Knockout NOTES: 1. Refer to print for roof curb accessory dimensions. 2. Dimensions in ( ) are in millimeters. Center of Gravity. Direction of airflow. 5. Ductwork to be attached to accessory roof curb only. 6. Minimum clearance: a.
  • Page 6 Table 1A — Physical Data, 50TJ016-028 (SI) UNIT SIZE (Standard) (High Static DEC Option) NOMINAL CAPACITY (kW) 52.8 70.3 87.9 87.9 OPERATING WEIGHT (kg) EconoMi$er 36.3 36.3 36.3 36.3 MoistureMiser Dehumidification Package 18.1 18.1 18.1 18.1 COMPRESSOR Scroll Quantity...Model (Ckt 1, Ckt 2) 1...ZR16M3,...
  • Page 7 Table 1B — Physical Data, 50TJ016-028 (English) UNIT SIZE (Standard) (High Static DEC Option) NOMINAL CAPACITY (tons) OPERATING WEIGHT (lbs) 1560 1800 1950 1950 EconoMi$er MoistureMiser Dehumidification Package COMPRESSOR Scroll 1...ZR16M3, 1...ZR19M3, 1...ZR19M3, Quantity...Model (Ckt 1, Ckt 2) 2...ZR108KC 1...ZR125KC 1...ZR16M3...

  • Page 8: Step 3 - Field Fabricate Ductwork

    Step 3 — Field Fabricate Ductwork — Step 4 — Make Unit Duct Connections — Secure all Unit ducts to building structure. Use flexible duct connectors be- is shipped for through-the-bottom duct connections. Ductwork tween unit and ducts as required. Insulate and weatherproof all openings are shown in Fig.

  • Page 9: Step 6 - Make Electrical Connections

    Unit failure as a result of operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. FIELD CONTROL WIRING — Install a Carrier-approved accessory thermostat assembly according to the installation in- structions included with the accessory. Locate thermostat assembly on a solid wall in the conditioned space to sense aver- Fig.
  • Page 10 Table 2 — Electrical Data, 50TJ016-028 COMPRESSOR VOLTAGE POWER ELECTRIC POWER UNIT NOMINAL RANGE EXHAUST HEAT* SUPPLY No. 1 No. 2 50TJ VOLTAGE FLA (ea) MOCP† — — — — 30.1 30.1 — 10.5 — — — — — —...

  • Page 11: Optional Integral Non-Fused Disconnect

    Step 7 — Make Outdoor-Air Inlet Adjustments OPTIONAL INTEGRAL NON-FUSED DISCONNECT — On units with the optional non-fused disconnect, incoming MANUAL OUTDOOR-AIR DAMPER — All units (except power will be wired into the disconnect switch. Refer to those equipped with a factory-installed economizer) have a Fig.

  • Page 12: Step 8 - Install Outdoor-Air Hood

    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 -in. nut driver to remove the 2 screws securing the outdoor air temperature sensor to the sheet metal.
  • Page 13 BAFFLE (028 ONLY) SENSOR OUTSIDE AIR SENSOR COVER LOWER FILTER RETAINER FILTER SUPPORT BRACKET HOOD SIDE PANELS (2) HOOD TOP PANEL BAFFLE Fig. 21 — Outdoor-Air Sensor Location (028 ONLY) MOUNTING SCREW LOWER FILTER RETAINER FILTER SUPPORT BRACKET SENSOR WIRING CONNECTIONS HOOD DRAIN PAN UPPER FILTER RETAINER...
  • Page 14 Table 5 — EconoMi$er Switchover If a potentiometer fails, its setting will default to the values Control Strategy in Table 7. Table 6 — Changeover Set Points SENSORS REQUIRED ECONOMI$ER SWITCHOVER Outdoor Air Outdoor Air Return Air Return Air STRATEGY SETTINGS Temperature Enthalpy...

  • Page 15: Step 9 - Install All Accessories

    Unoccupied Control Outdoor Air Enthalpy CROUTENT001A00 Unoccupied Contact 470 ohm 5 watt Resistor Violet M PW 24 VAC must be present on BI for the system to be unoccupied. Violet W hite Return Air Enthalpy +15V CRRETENT001A00 Violet Violet CO2 Sensors: W hite M PW 3ZCSENCO...
  • Page 16 Motormaster III Control — Recommended mounting location is beneath the control box, mounted to the partition that sepa- rates the control box section from the indoor section. NOTE: If unit power is supplied through the roof curb and basepan of the unit, mount the Motormaster III control on the corner post adjacent to the conduit running from the basepan to the bottom of the control box.
  • Page 17 SCREWS SCREW LOCATIONS Fig. 28 — Condenser Hood Screw Location Fig. 31 — Top and End of Condenser BAFFLE ANGLE HOOD TOP LEFT HAND AND RIGHT HAND BRACKETS Fig. 29 — Hood Components BRACKETS Fig. 32 — Completed Hood Assembly Fig.

  • Page 18: Step 10 - Install Humidistat For Optional Moisturemiser Dehumidification Package

    Step 10 — Install Humidistat for Optional MoistureMiser Dehumidification Package — MoistureMiser dehumidification package operation can be controlled by field installation of a Carrier-approved humidis- tat. To install the humidistat perform the following procedure: 1. Locate humidistat on a solid interior wall in the condi- tioned space.

  • Page 19: Start-Up

    START-UP Return-Air Filters — Check that correct filters are in- stalled in filter tracks. See Tables 1A and 1B. Do not operate Use the following information and Start-Up Checklist on unit without return-air filters. page CL-1 to check out unit PRIOR to start-up. Outdoor-Air Inlet Screens —...
  • Page 20 2. If Y1 is energized for more than 20 minutes, and Y2 is the MoistureMiser circuits, forcing the warm liquid refrigerant not energized (whether or not a 2-stage thermostat is of the liquid line to enter the subcooler coils. See Fig. 35. used), the compressor and OFC are energized.
  • Page 21 Unit warranty will not be affected. NOTES: 6. Use of a field-supplied motor may affect wiring size. Contact your Carrier 1. Maximum continuous bkW is 3.17 (400 v) or 2.57 (220 v). The maximum representative for details.
  • Page 22 Unit warranty will not be affected. NOTES: 6. Use of a field-supplied motor may affect wiring size. Contact your Carrier 1. Maximum continuous bkW is 7.68. The maximum continuous watts is 8640. representative for details. For additional information on motor performance, Do not adjust motor rpm such that motor maximum bkW and/or kW is refer to Evaporator-Fan Motor Performance Table 19.
  • Page 23 1. Maximum continuous bhp is 4.25 (400 v) or 3.45 (220 v). The maximum 6. Use of a field-supplied motor may affect wiring size. Contact your Carrier continuous watts is 3775 (400 v) or 3065 (220 v). Do not adjust motor rpm representative for details.
  • Page 24 1. Maximum continuous bhp is 13.3 (400 v) or 11.5 (220 v). The maximum 6. Use of a field-supplied motor may affect wiring size. Contact your Carrier continuous watts is 11,000 (400 v) or 9600 (220 v). Do not adjust motor representative for details.
  • Page 25 Table 16A — Accessory/FIOP Static Pressure Table 17A — MoistureMiser Dehumidification (Pa) — 50TJ024,028 Package Static Pressure Drop (Pa) L/s PER kW UNIT SIZE UNIT NOMINAL COMPONENT 2800 3400 4247 4719 5300 50TJ 40.6 EconoMi$er 52.8 17.7 27.6 Glycol Coil 70.3 17.7 31.4...

  • Page 26: Service

    Table 19 — Evaporator-Fan Motor Performance MAXIMUM MAXIMUM MAXIMUM UNIT UNIT RATED ACCEPTABLE ACCEPTABLE ACCEPTABLE MAXIMUM 50TJ VOLTAGE CONTINUOUS CONTINUOUS OPERATING AMP DRAW BHP* BkW* WATTS 3.45 2.57 3,065 4.25 3.17 3,775 10.30 7.68 8,640 26.0 10.30 7.68 8,640 13.0 11.50 8.60 9,600...

  • Page 27: Service

    has an extended tube line so it can be lubricated from the motor side. Lubricate the bearings twice annually. Typical lubricants are given below: MANUFACTURER LUBRICANT Texaco Regal AFB-2* Mobil Mobilplex EP No. 1 Sunoco Prestige 42 Texaco Multifak 2 *Preferred lubricant because it contains rust and oxidation inhibitors.
  • Page 28 NOTE: Dimensions are in mm (inches). Fig. 40 — Condenser-Fan Adjustment 3. Tighten nuts. 4. Adjust bolts and nut on mounting plate to secure motor in fixed position. Condenser-Fan Adjustment (Fig. 40) NOTE: For size 028 units with optional high-static condenser fans, refer to section below for adjustment.
  • Page 29 Amount of refrigerant charge is package, charge per the standard subcooling charts. The sub- listed on unit nameplate and in Table 1. Refer to Carrier cooler MUST be deenergized to use the charging charts. The GTAC II; Module 5; Charging, Recovery, Recycling, and Rec- lamation section for charging methods and procedures.
  • Page 30 Crankcase Heater — Only 50TJ028 and units with BOTH CIRCUITS ALL OUTDOOR FANS MUST BE OPERATING MoistureMiser are equipped with a 70-watt crankcase heater to prevent absorption of liquid refrigerant by oil in the crankcase when the compressor is idle. The crankcase heater is energized whenever there is a main power to the unit and the compressor is not energized.
  • Page 31 A complete list of replacement as appropriate, there should be 24 v between termi- nals M2 and T2. If not, the module is defective. parts may be obtained from any Carrier distributor upon request. EVAPORATOR-FAN MOTOR PROTECTION — A man-...
  • Page 32 Refer to Fig. 44 for typical unit wiring schematic. Fig. 44 — Typical Wiring Schematic (50TJ024 400 V Shown)
  • Page 33 Fig. 44 — Typical Wiring Schematic (50TJ024 400 V Shown) (cont) Refer to Fig. 45 for component arrangement. Fig. 45 — Typical Component Arrangement (50TJ024 Shown)
  • Page 34 LEGEND AND NOTES FOR FIG. 44 AND 45 LEGEND — Adjustable Heat Anticipator GND — Ground — Terminal Block BRK W/AT — Breaks with Amp Turns — Heater Contactor — Thermostat Cooling — Contactor, Compressor HPS — High-Pressure Switch — Thermostat Heating —...

  • Page 35: Troubleshooting

    TROUBLESHOOTING Refer to Tables 21-23 for troubleshooting details. Table 21 — Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and Power failure. Call power company. condenser fan Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. will not start. Defective thermostat, contactor, transformer, or control Replace component.
  • Page 36 Table 22 — EconoMi$er Troubleshooting PROBLEM POTENTIAL CAUSE REMEDY Damper Does Not Indoor (Evaporator) Fan is Check to ensure that 24 vac is present at Terminal C1 (Common Power) Open on the IFC (Indoor [Evaporator] Fan Contactor) or that 24 vac is present at the IFO (Indoor [Evaporator] Fan On) terminal.
  • Page 38 Copyright 2001 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 Catalog No. 015-056 Printed in U.S.A. Form 50TJ-C17SI Pg 38 5-01 Replaces: 50TJ-C16SI...

  • Page 40: Start-Up Checklist

    ECONOMI$ER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS VERIFY INSTALLATION OF ALL OPTIONS AND ACCESSORIES Copyright 2001 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Table of Contents