Carrier T--298 service manual Ac to ry Wiri ng Fie ld Wiri ng, Thermostat Powerbox Assembly

Page 42

UPPER UNIT

Factory Wiring

Field Wiring

 

 

 

 

 

 

 

 

Motor

Comp.

 

 

 

 

 

1 2 3 4

2 1

 

 

 

 

 

1 2 3 4

J

 

 

115V AC High Voltage

 

 

 

Power Supply

 

 

 

 

 

 

L

 

 

 

 

 

 

N2

 

 

 

 

 

 

N1

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

POWERBOX

 

 

 

 

 

ASSEMBLY

1

W

 

 

 

 

 

 

 

 

 

 

2

Y

Y

COOL (Compressor)

 

 

3

GH

GH FAN (High)

 

 

4

GL

GL

FAN (Low)

12VDC LowVoltage

 

5

C

R

 

 

Power Supply

 

 

 

 

 

 

TB

C

 

 

 

 

1

Blue

 

 

 

 

 

Blue

 

 

 

 

 

2

+ 12VDC

12 VDC (Gnd)

 

 

 

 

CEILING UNIT

 

 

FURNACE

 

 

 

 

 

 

Figure 3-41 Wall Thermostat Wiring Diagram -- Heat/Cool Model

T--298

3-18

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Image 42
Page 41 Page 43
Contents Model AirV AirV Operating Precautions Safety SummaryGeneral Safety Notices Maintenance PrecautionsSpecific Warning and Caution Statements Specific Warnings and CautionsSafety 298 Table of Contents Table of Contents List of Figures Figure NumberList of Tables Table NumberSerial Number Identification Section DescriptionIntroduction Design Change DescriptionsUpper Unit Roof Ceiling UnitAdditional Support Manuals MANUAL--FORM no Equipment Covered Type of ManualFor Part no Ceiling Unit Component Identification Free--Blow Component Identification -- Low Profile -- Upper Unit Component Listing--Ceiling Unit For Ducted Systems Supply AIR Return AIRFree Blow Type Cations START--UPRefrigerant CYCLE--STANDARD System Refrigerant Flow Schematic -- Heat Pump -- Cool Mode Cooling Refrigerant Cycle -- Heat PumpPage Section Troubleshooting Condenser AIR not Adequate Heater Cycles on Limit Switch HEAT/ Cool Version onlyInsufficient COOLING, Cooling AIR not Adequate Insufficient CoolingClearing Diagnostic Alarms Inadequate Heat HEAT--PUMPPriority Malfunction Section Service and Maintenance Preventative MaintenanceService -- General Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat Removal Indoor Thermostat 3.3.7 Air Sweep RemovalControl Box Assembly Removal Ceiling Unit -- Ducted SystemsFilter Removal Service -- Upper Unit -- STANDARD, HC & HP PCB Display RemovalFuse Removal Compressor Replacement 15 Control BoxUpper Scroll Assembly Removal 19 Motor AssemblyAir Handling System Removal 23 Blower WheelLine Voltage -- 10% 27 Upper Scroll Assembly Locking Tabs b. & Screw Locations c 30 Condenser Fan Assembly Retaining Ring Condenser Motor Removal 34 Evaporator Motor Locking TabsBe permanent. It cannot be changed back to Capacitor RemovalChange from Fahrenheit to Celsius will Fahrenheit38 Remote Control Components SET Thermostat Configuration LCD DisplayCheck Thermostat Operation Powerbox Assembly Upper UnitThermostat Thermostat Powerbox Assembly Ac to ry Wiri ng Fie ld Wiri ngSection Wiring Schematics Upper Unit Schematic -- Standard & HCCeiling Unit Schematic -- Cooling Only Heat Pump -- Ceiling Unit -- Free Blow Heat Pump -- Upper Unit -- Ducted 10 Ceiling Unit -- Wall Thermostat -- Ducted & Free Blow Wall Mounted ThermostatsIndex Ceiling Unit -- Ducted Systems Ceiling Unit -- Free Blow
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