Carrier 48TJ016-028 specifications Aha, Bkr W/At

Page 47

LEGEND AND NOTES FOR FIG. 58 AND 59

 

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

AHA

--

Adjustable,

 

Heat

Anticipator

SN

--

Sensor

 

 

 

 

 

BKR W/AT --

Breaks

 

with Amp

Turns

 

TB

--

Terminal

Block

 

 

C

--

Contactor,

Compressor

 

TC

--

Thermostat

 

Cooling

 

CAP

--

Capacitor

 

 

 

 

 

TH

--

Thermostat

 

Heating

 

CB

--

Circuit

Breaker

 

 

TRAN

--

Transformer

 

 

 

 

CC

--

Cooling

 

Compensator

 

 

 

 

 

 

 

 

 

CLO

--

Compressor

 

Lockout

 

_

 

Terminal

(Marked)

 

COMP

--

Compressor

 

Motor

 

O

 

Terminal

(Unmarked)

 

DM

--

Damper

 

Motor

 

 

 

 

 

 

 

 

 

 

DU

--

Dummy

 

Terminal

 

 

_

 

Terminal

Block

 

 

EQUIP

--

Equipment

 

 

 

Thermostat

 

Splice

 

 

 

 

 

FPT

--

Freeze

 

Protection

 

 

 

 

 

 

FU

--

Fuse

 

 

 

 

 

 

 

 

 

Factory

Wiring

 

 

GND

--

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HPS

--

High-Pressure

Switch

 

_ m--

 

Field Control

Wiring

 

IAQ

--

Indoor

Air Quality

Sensor

 

 

Accessory

or Optional

Wiring

IDM

--

Induced-Draft

Motor

 

 

 

 

 

 

 

 

 

IFM

--

Indoor-Fan

 

Motor

 

 

......m_

 

To indicate

common potential only;

IGC

--

Integrated

Gas Unit Controller

 

 

not to represent

wiring.

 

 

 

 

 

 

 

 

L

--

Light

 

 

 

 

 

 

 

_

 

Economizer

 

Motor

 

LED

--

Light Emitting

Diode

 

 

 

 

 

 

 

 

 

LPS

--

Low-Pressure

Switch

 

_

 

Remote

POT Field Accessory

LS

--

Limit Switch

 

 

 

 

 

 

 

 

 

 

 

 

MGV

--

Main Gas Valve

 

 

 

 

OAT Sensor

 

 

 

NEC

--

National

Electrical Code

 

 

 

 

 

 

 

 

 

OAT

--

Outdoor

Air Temperature

Sensor

_

 

Disch Air Sensor

 

 

OCCUP

--

Occupancy

 

Sensor

 

 

 

RAT Accessory

Sensor

OFC

--

Outdoor-Fan

 

Contactor

 

 

 

 

 

 

 

 

 

OFM

--

Outdoor-Fan

 

Motor

 

 

 

Low Ambient

Lockout

Switch

PL

--

Plug Assembly

 

 

 

 

 

 

 

 

 

 

PMR

--

Phase

Monitor Relay

 

 

 

 

 

 

 

 

 

QT

--

Quadruple

Terminal

 

 

 

 

 

 

 

 

 

RAT

--

Return

 

Air Temperature

Sensor

 

 

 

 

 

 

 

 

RS

--

Rollout

 

Switch

 

 

 

 

 

 

 

 

 

 

NOTES:

1.Compressor and/or fan motor(s) thermally protected three phase motors protected against primary single phasing conditions.

2.If any of the original wire furnished must be replaced, it must be replaced with Type 90 ° C or its equivalent.

3.TRAN1 is wired for 230-v operation. If unit is 208 v, disconnect the black wires from the ORN TRAN wire and reconnect to the RED TRAN wire. Apply wirenuts to wires.

4.CB1,2 Must Trip Amps are equal to or less than 156% FLA. IFCB 140%.

5.The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices; before replacing CLO check these devices.

6.Jumpers are omitted when unit is equipped with economizer.

7.Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single pole, double throw contact. An underlined number signifies a normally closed contact. Plain (no line) number signifies a normally open contact.

8.Remove jumper between RC and RH.

9.620 Ohm, 1 watt, 5% resistor should be removed only when using differential enthalpy or dry bulb.

10.If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

11.OAT sensor is shipped inside unit and must be relocated in the field for proper operation.

12.For field-installed remote minimum position POT. remove black wire jumper between P and P1 and set control minimum position POT to the minimum position.

47

Image 47
Contents Installation, Start-Up Service Instructions Package no Height Accessory CurbRig and Place Unit --Do not diop unit 14-3/4OUTLINEGPUN,T Unit DimensionsSpreaderbars Detail a Unit Base RailSTD Unit Economizer DIM B DIM C Unit WeightDIM a DIM B DIM C Weight BTD Unit Unit WeightEvaporator FAN Physical DataOUTDOOR-AIR Inlet Screens Unit 48TJ Furnace SectionFreeze Protection Thermostat F Inside Install Flue Hood and Wind BaffleMake Unit Duct Connections -- Unit Trap Condensate Drain -- See FigLP Gas Conversion Orifice Change -- This unit is factory asOrifice Quantity TBI VO Ltag EGAS Thermostat Assembly Field Control Thermostat WiringElectrical Data PAN Make Outdoor-Air Inlet Adjust- mentsSecuring Screws PanelMotormaster I Control Installation Install All Accessories-- Install all48TJ024,028 Motormaster V Control InstallationMotormaster V Control Package Usage Item DescriptionOutputs AdjustFactory-Installed OptionsGrinyel ELDWnti Econo MotorOutdoor AIR Return Application Temperature Sensor Enthalpy33CSENTHSW Differential Enthalpy Control Wiring JIN Unit OutdoorOptional Economiseriv and ECONOMISER2 EconoMiSerlVComponent Locations-- End ViewEconoMi$erlV Wiring ECONOMI$ERIV Supply Air Sensor Temperature Resistance ValuesEconoMi$erlV Sensor Usage Economiseriv Standard Sensors11t,4 SR117 EconoMi$erlV Controller 002 Sensor Maximum Range SettingAOlI so+Nocv To x l---ff+ TR 002 Sensor Standard Settings Tran MOISTUREMI$ERLlsv LPSCrankcase Heater Size 028 and Units with Compressor RotationAirflow Fan Performance --48TJD016 Low Heat UnitsFan Performance --48TJD020 and 024 Low Heat Units Fan Performance --48TJF016 High Heat Units Fan Performance 48TJD028 Low Heat UnitsFan Performance --48TJF028 High Heat Units Fan Performance 48TJF020 and 024 High Heat UnitsAir Quantity Limits Accessory/FlOP Static PressureAccessory/FlOP Static Pressure In. wg --48TJ020-028 Fan Rpm at Motor Pulley SettingsOperating Sequence Evaporator-Fan Motor DataEvaporator-Fan Motor Efficiency COOLING, Units with ECONOMISER2, Premier COOLING. Units with ECONOMISER2, PremierHEATING. Unit with ECONOMI$ER2, Premierlink OAT SPTTypical Gas Heating Section Coil Maintenance and Cleaning RecommenManufacturer Lubricant Evaporator Fan Performance AdjustmentLubrication Condenser and EVAPORATOR-FAN MotorWith Belt Evaporator Fan Service and ReplacementMotor Section Fixed Flange SINGLE-GROOVECondenser-Fan Adjustment Belt Tension Adjustment --To adjust belt tensionControl Circuit, 24-7--This control circuit is pro Gas Valve AdjustmentDiagnostic IGC Control LEDs-- The IGC bomd Protective DevicesSee 48TJD016D o,,-PL1o-12 1Oll IOll 1011BKR W/AT AHAUnit Troubleshooting- Refer to Tables 27-29 Than Normally Cooling Service AnalysisCause Remedy Will NotMoistureMi$er TM Dehumidification Heating Service AnalysisSubcooler Service Analysis Problem CauseEr LOC.rsOFF Valve Motor FaultOutputs EconoMi$erlV Input/Output LogicInputs DCVIndex Service Training Page Compressor Amps Supply FAN Amps Exhaust FAN Amps RETURN-AIR TemperatureModel no Serial no Date Supply Voltage

48TJ016-028 specifications

The Carrier 48TJ016-028 is a notable model in the range of packaged rooftop units designed by Carrier, a leader in heating, ventilation, and air conditioning (HVAC) solutions. Tailored specifically for commercial applications, these units provide a blend of efficiency, durability, and reliability, making them suitable for a variety of settings, including offices, retail spaces, and industrial environments.

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