Carrier T--298 service manual Section Wiring Schematics, Upper Unit Schematic -- Standard & HC

Page 43

SECTION 4

WIRING SCHEMATICS

4.1 INTRODUCTION

This Section contains wiring schematics for the AirV units.

Figure 4--1 is the schematic for the standard upper unit assembly and it is applicable to all standard units. Figure 4--2 is the schematic for the Low Profile upper unit assembly.

Figure 4--3 is the schematic for a free blow ceiling unit without heat while Figure 4--4 is a free blow unit with heat. Figure 4--5 is for a ducted unit with microprocessor control.

Figure 4--6 is for an Upper Unit Heat Pump with free blow application and Figure 4--7 is the matching free blow ceiling unit.

Figure 4--8 is for the Upper Unit Heat Pump ducted application and Figure 4--9 is the matching ducted ceiling unit.

Note that the ducted units have 115 VAC power for the components and 12 VDC power for the microprocessor control system.

Figure 4--10 is for the ducted or free blow application that uses a wall--mounted thermostat, with or without the furnace option.

Where applicable, diagrams that designate 115 Volt, 60 H, 1 Phase, are also available using 220 Volts, 50 H, 1 Phase. Most noteably Figure 4--1 and Figure 4--5.

 

4P

 

 

2P

FAN MOTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

BLK

 

1

BLK

 

 

 

 

BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

BLU

2

BLU

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

GRN/YEL

 

 

 

 

 

PLUG CONNECTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN/YEL

GRN/YEL

 

WHT

 

 

 

 

F

 

 

 

TO CEILING UNIT

 

 

 

 

 

C

CAPACITOR

4

 

 

 

 

H

SEE FIG> 4--3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OR 4--4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2P

CONTROL

EVAP.

 

 

 

 

 

RED RED

 

BLU

 

 

 

BOX

 

 

WHT

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

YEL

 

 

1

2

 

YEL

C

 

PTC

 

 

 

 

 

 

 

 

 

BLU

 

 

 

 

 

 

 

OVERLOAD PROTECTOR

 

 

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

(If Used)

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 4--1 Upper Unit Schematic -- Standard & HC

 

 

 

 

(UNIT - 99-00468-10)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLUG CONNECTS TO CEILING UNIT. SEE DIAGRAM SUPPLIED WITH CEILING UNIT FOR ADDITIONAL WIRING.

4P

 

 

 

 

 

4P

 

 

 

 

INDOOR FAN MOTOR

BLK

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

1

1

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

BLU

 

 

 

2

2

 

 

BLU

 

 

 

 

GRN/YEL

 

 

 

 

 

 

 

 

 

 

 

3

WHT

 

 

WHT

3

3

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

GRN/YEL

 

 

BRN

4

4

 

 

BRN

 

 

 

 

 

 

 

FMC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YEL

 

3P

 

YEL

 

 

OUTDOOR FAN MOTOR

 

 

 

 

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

2

 

WHT

 

 

 

 

 

2P

 

 

 

 

 

 

 

 

 

 

 

 

WHT

 

 

 

3

3

 

 

BRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAPACITOR

2

YEL

 

 

 

 

 

BRN

 

 

 

C

H

 

 

 

 

 

 

 

 

WHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHT

RED

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OLP

 

 

 

R

RED

 

 

 

 

 

LEGEND

 

 

(IF USED)

 

 

 

 

PTC

 

 

 

 

YEL

YEL

 

 

 

 

 

 

 

 

1

 

2

C

 

 

 

 

 

 

 

 

 

 

 

(IF USED)

 

 

 

 

 

 

 

 

 

 

 

OLP: OVERLOAD PROTECTION

 

 

 

 

(3)

 

 

S

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PTC: START THERMISTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JTB: JOINT TERMINAL BLOCK

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

FMC: INDOOR FAN MOTOR CAPACITOR

 

 

 

 

 

 

 

 

 

 

 

Figure 4--2 Upper Unit Schematic --

Low Profile

4-1

T--298

Image 43
Contents Model AirV AirV Maintenance Precautions Safety SummaryGeneral Safety Notices Operating PrecautionsSpecific Warnings and Cautions Specific Warning and Caution StatementsSafety 298 Table of Contents Table of Contents Figure Number List of FiguresTable Number List of TablesDesign Change Descriptions Section DescriptionIntroduction Serial Number IdentificationCeiling Unit Upper Unit RoofMANUAL--FORM no Equipment Covered Type of Manual Additional Support ManualsFor Part no Ceiling Unit Component Identification Free--Blow Component Identification -- Low Profile -- Upper Unit Component Listing--Ceiling Unit For Ducted Systems Return AIR Supply AIRFree Blow Type START--UP CationsRefrigerant CYCLE--STANDARD System Refrigerant Cycle -- Heat Pump Refrigerant Flow Schematic -- Heat Pump -- Cool Mode CoolingPage Section Troubleshooting Insufficient Cooling Heater Cycles on Limit Switch HEAT/ Cool Version onlyInsufficient COOLING, Cooling AIR not Adequate Condenser AIR not AdequateInadequate Heat HEAT--PUMP Clearing Diagnostic AlarmsPriority Malfunction Preventative Maintenance Section Service and MaintenanceService -- General Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat 3.3.7 Air Sweep Removal Indoor Thermostat RemovalCeiling Unit -- Ducted Systems Control Box Assembly RemovalFilter Removal PCB Display Removal Service -- Upper Unit -- STANDARD, HC & HPFuse Removal 15 Control Box Compressor Replacement19 Motor Assembly Upper Scroll Assembly Removal23 Blower Wheel Air Handling System RemovalLine Voltage -- 10% 27 Upper Scroll Assembly Locking Tabs b. & Screw Locations c 30 Condenser Fan Assembly Retaining Ring 34 Evaporator Motor Locking Tabs Condenser Motor RemovalFahrenheit Capacitor RemovalChange from Fahrenheit to Celsius will Be permanent. It cannot be changed back to38 Remote Control Components LCD Display SET Thermostat ConfigurationCheck Thermostat Operation Upper Unit Powerbox AssemblyThermostat Ac to ry Wiri ng Fie ld Wiri ng Thermostat Powerbox AssemblyUpper Unit Schematic -- Standard & HC Section Wiring SchematicsCeiling Unit Schematic -- Cooling Only Heat Pump -- Ceiling Unit -- Free Blow Heat Pump -- Upper Unit -- Ducted Wall Mounted Thermostats 10 Ceiling Unit -- Wall Thermostat -- Ducted & Free BlowCeiling Unit -- Ducted Systems Ceiling Unit -- Free Blow Index