Carrier 52C, P manual Cap

Page 43

COMPONENT LEGEND

 

 

Component Connection (Marked)

 

 

Component Connection (Unmarked)

 

 

 

 

Accessory or Optional Wiring

 

 

 

 

To Indicate Common Potential Only

 

 

Not To Represent Wire

CAP

Capacitor

COMP

Compressor

FM

Fan Motor

FCS

Fan Cycle Switch

HTR

Heater

IT

Indoor Thermostat

NEC

National Electrical Code

OL

Overload

PLS

Primary Limit Switch

SLS

Secondary Limit Switch

ST

Start Thermistor

SW

Switch

NOTES:

1.Recommended for use on grounded power sup- ply only.

2.Compressor and fan motor thermally protected.

3.Use copper conductors only.

4.All wiring must conform with NEC and local codes.

5.Dashed lines indicate components when used.

FIGURE 70 — 52CE AND 52PE — TYPICAL WIRING SCHEMATIC FOR

STANDARD HEAT/COOL UNITS

43

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Contents Contents Service Technician GuideSummary of DANGERS, WARNINGS, and Cautions IntroductionTools Needed Unit DisassemblyDisconnect Power for CORD-CONNECTED Unit Disconnect Power for Permanently Connected Hardwired UnitsRemove the Unit from the Wall Sleeve Open the Control BOXRemove the Discharge Deck Assembly Accessing Unit ComponentsAccessing INDOOR-AIR Section Components Accessing OUTDOOR-AIR Section ComponentsRemove the AIR Discharge Grille Ptac Unit with Lateral Duct Accessory InstalledGusset Removal Location of Screws on Discharge Grille Reinstall Front PanelCleaning and Safety General CleaningComponent Cleaning Schedule Cleaning the Outdoor AIR Vent Filter Monthly CleaningCleaning the Indoor and Outdoor Coils Seasonal CleaningAccess and Clean Indoor FAN and FAN Scroll Ptac Exterior Surfaces Rotary Compressor Components CompressorDisconnect ALL Power to the Unit Compressor TroubleshootingBasic Hermetic Compressor Electrical Measurements Basic Compressor Troubleshooting Guide Compressor ReplacementSHORTED/OPEN Windings Test Strainer Capillary Tube Location Common Causes Heater Failure HeatersHeater Removal Acceptable Heater Resistance Values Disconnect ALL Power to UnitUNIT-MOUNTED Controls Operating ControlsWALL-MOUNTED Thermostat Controls Remote Thermostat TroubleshootingDo not daisy chain R 24 VAC NON-USER Adjustable Controls Description of Selector Switch Settings FigureSequence of Operation Component Operation and TroubleshootingTools Needed Indoor Thermostat IT CONTACTS, ALL 52CE, PE Models Indoor Thermostat IT CONTACTS, ALL 52CQ, PQ Models Capacitor Test Electrical Components Removal and ReplacementComponent Locations Open Control BOX FAN Motor FAN Motor TroubleshootingBasic FAN Motor Electrical Tests Typical 265 Volt Motors FAN Motor Troubleshooting Chart Typical 208/230 Volt MotorsLocation of Wiring Schematic On Front Panel of Control BOX FAN Motor ReplacementField Temperature Charts 100 110 120 130 52P 12,000 BTU Unit Field Temperature Chart High Cool 50% RH Indoor Series Indoor 52C,P Series Page 000 Btu 52P-12,000 Btu 52C-12,000 Btu 15,000 Btu Refer to Figures 68-72 for Typical Wiring Schematics Wiring DiagramsComponent Legend CAP Component Connection Marked Fan Motor Page Most Frequent Ptac Service Questions Accessory Form Number Part Number Description AccessoriesAmps 52C Performance and Physical Data52PE-512---3 52P Performance and Physical DataPage Page Copyright 2002 Carrier Corporation