Carrier P Manuel d'utilisateur

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52C,P
SERIES
PTAC Customer Support Center
1•800•894•6449
SERVICE TECHNICIAN GUIDE
PACKAGED TERMINAL AIR CONDITIONERS
AND HEAT PUMPS
CONTENTS
Page
INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2,3
SUMMARY OF DANGERS, WARNINGS,
AND CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
UNIT DISASSEMBLY
. . . . . . . . . . . . . . . . . . . . . . . . . . .3,4
TOOLS NEEDED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REMOVE FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . 3
DISCONNECT POWER FOR
CORD-CONNECTED UNIT . . . . . . . . . . . . . . . . . . . . . 3
DISCONNECT POWER FOR PERMANENTLY
CONNECTED (HARDWIRED) UNITS . . . . . . . . . . . . 3
OPEN THE CONTROL BOX. . . . . . . . . . . . . . . . . . . . . 4
REMOVE THE UNIT FROM THE WALL SLEEVE . . 4
ACCESSING UNIT COMPONENTS
. . . . . . . . . . . . . .5-8
ACCESSING INDOOR-AIR SECTION
COMPONENTS (UNITS WITH LATERAL
DUCT ACCESSORY). . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ACCESSING INDOOR-AIR SECTION
COMPONENTS (UNITS WITHOUT LATERAL
DUCT ACCESSORY). . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ACCESSING OUTDOOR-AIR SECTION
COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GENERAL CLEANING
. . . . . . . . . . . . . . . . . . . . . . . . .9-12
CLEANING AND SAFETY . . . . . . . . . . . . . . . . . . . . . . 9
TOOLS NEEDED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
MONTHLY CLEANING. . . . . . . . . . . . . . . . . . . . . . . . 10
SEASONAL CLEANING . . . . . . . . . . . . . . . . . . . . . . . 11
Page
COMPRESSOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-17
COMPRESSOR TROUBLESHOOTING . . . . . . . . . . . 14
BASIC HERMETIC COMPRESSOR
ELECTRICAL MEASUREMENTS. . . . . . . . . . . . . . . . 14
COMPRESSOR REPLACEMENT . . . . . . . . . . . . . . . . 15
HEATERS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,19
COMMON CAUSES OF HEATER FAILURE. . . . . . . 18
HEATER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
OPERATING CONTROLS
. . . . . . . . . . . . . . . . . . . . . 20-27
DESCRIPTION OF SELECTOR
SWITCH SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
NON-USER ADJUSTABLE CONTROLS . . . . . . . . . . 22
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . 23
COMPONENT OPERATION AND
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 23
ELECTRICAL COMPONENTS REMOVAL
AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 26
FAN MOTOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-30
FAN MOTOR TROUBLESHOOTING. . . . . . . . . . . . . 28
BASIC FAN MOTOR ELECTRICAL TESTS. . . . . . . . 28
FAN MOTOR REPLACEMENT. . . . . . . . . . . . . . . . . . 30
WIRING DIAGRAMS
. . . . . . . . . . . . . . . . . . . . . . . . 31-35
MOST FREQUENT PTAC SERVICE
QUESTIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
ACCESSORIES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
52C,P
SERIES
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Résumé du contenu

Page 1 - SERVICE TECHNICIAN GUIDE

52C,PSERIESPTAC Customer Support Center1•800•894•6449SERVICE TECHNICIAN GUIDEPACKAGED TERMINAL AIR CONDITIONERSAND HEAT PUMPSCONTENTSPageINTRODUCTION.

Page 2 - INTRODUCTION

52C,PSERIES10TOOLS NEEDEDThe following list includes the recommended tools, devices, and cleaning solutions for use in cleaning the 52C,P unit and com

Page 3 - UNIT DISASSEMBLY

11SEASONAL CLEANINGThe indoor and outdoor coils should be cleaned at least once during every season. Refer to ACCESSING UNIT COMPONENTS section to pre

Page 4 - WALL SLEEVE

52C,PSERIES12DRAIN VALVEFIGURE 24 — VACUUMING EVAPORATOR COILFIGURE 25 — CLEANING COILSFIGURE 23 — PTAC EXTERIOR SURFACESFIGURE 26 — BASEPAN SECTION

Page 5 - ACCESSING UNIT COMPONENTS

13COMPRESSORA cutaway view of the rotary compressor with key components labeled is shown in Figure 27. The motor stator is rigidly attached to the com

Page 6

52C,PSERIES14The rotary compression process (Figure 28), starts at top dead center as shown in (1). Suction gas flows through the suction inlet and in

Page 7

15FIGURE 29 — BASIC COMPRESSOR TROUBLESHOOTING GUIDE5. Next, perform a grounded windings test to test the resistance individually of each wire to the

Page 8

52C,PSERIES16 TOOLS NEEDED — The following list includes the recommended tools and devices for removing and replacing the compressor. REMOVING THE

Page 9 - GENERAL CLEANING

1712. Install the new compressor and the new capillary assembly (the correct capillary and strainer may be obtained from Carrier RCD), into the unit.1

Page 10 - MONTHLY CLEANING

52C,PSERIES18HEATERSThe heater in 52C,P units is located directly behind the evaporator coil. The heater assembly includes the heater (2.3 kW, 3.4 kW

Page 11 - SEASONAL CLEANING

19 TOOLS NEEDED — The following list includes rec-ommended tools and devices for working on the heater section of 52C,P units.Perform the following

Page 12 - FIGURE 26 — BASEPAN SECTION

52C,PSERIES2INTRODUCTIONThe focus of this manual is to provide basic information on service procedures, safety, troubleshooting, clean-ing, and compon

Page 13 - COMPRESSOR

52C,PSERIES20OPERATING CONTROLSThe controls and components used in the 52C,P cool-ing only or heat/cool units are as follows: the selec-tor switch, th

Page 14 - BASIC HERMETIC COMPRESSOR

21RYWGOCRYWGOCRYWGOCRYWGOCRYWGOCT’STATMASTERPTACUNIT 1UNIT 2UNIT 3FIGURE 41 — TYPICAL WIRING FOR MULTIPLE 52C PTAC UNITS CONNECTED TO 1 WALL THERMOSTA

Page 15 - COMPRESSOR REPLACEMENT

52C,PSERIES22DESCRIPTION OF SELECTOR SWITCHSETTINGS (Figure 42) OFF MODE — The OFF position terminates unit operation. FAN ONLY MODE — Use fan onl

Page 16

23SEQUENCE OF OPERATION HEAT/COOL UNITS (Figure 43)Fan Mode — With the selector switch set to FAN con-tacts L1 to HI and FCS1 to LS are made.Cooling

Page 17

52C,PSERIES24The Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring

Page 18 - HEATER REMOVAL

25 OUTDOOR FROST THERMOSTAT (Heat Pump Units) (Figure 48A and 48B) — The Outdoor Frost Thermostat (OFT) is a thermostat that uses a single-pole swit

Page 19

52C,PSERIES265. The reading on the meter should first indicate zero, or a low resistance, then slowly rise toward infinity or some high value or measu

Page 20 - OPERATING CONTROLS

274. Remove the thermostat capillary from the outdoor coil and clip any wire ties holding the capillary in place.5. Disconnect the wires and carefully

Page 21

52C,PSERIES28FAN MOTORThe fan motor is a permanent split capacitor (PSC) type motor. This motor is common in air-conditioning system applications. A P

Page 22 - NON-USER ADJUSTABLE CONTROLS

29FIGURE 54 — FAN MOTOR TROUBLESHOOTING CHARTTYPICAL 208/230 VOLT MOTORSNOTE: Resistance values are approximate.TYPICAL 265 VOLT MOTORSNOTE: Resistanc

Page 23 - TROUBLESHOOTING

3UNIT DISASSEMBLYThis section includes common procedures for disas-sembly and re-assembly of unit. TOOLS NEEDEDThe following field-supplied items are

Page 24

52C,PSERIES30FAN MOTOR REPLACEMENT1. DISCONNECT ALL POWER TO UNIT.2. Remove the unit from the sleeve as detailed in the UNIT DISASSEMBLY section and p

Page 25

31FIGURE 57 — 52CQ — TYPICAL WIRING SCHEMATIC FOR STANDARD HEAT PUMP UNITSWIRING DIAGRAMSRefer to Figures 57-61 for Typical Wiring Schematics.NOTE: Fi

Page 26 - REMOVAL AND REPLACEMENT

52C,PSERIES32FIGURE 58 — 52CQ — TYPICAL WIRING SCHEMATIC FOR WALL THERMOSTAT CONTROL HEAT PUMP UNITS

Page 27

33FIGURE 59 — 52CE — TYPICAL WIRING SCHEMATIC FOR STANDARD HEAT/COOL UNITS

Page 28 - FAN MOTOR

52C,PSERIES34FIGURE 60 — 52CE — TYPICAL WIRING SCHEMATIC FOR WALL THERMOSTAT CONTROL HEAT/COOL UNITS

Page 29 - TYPICAL 265 VOLT MOTORS

35FIGURE 61 — 52PC — TYPICAL WIRING SCHEMATIC FOR STANDARD COOLING ONLY UNITS

Page 30 - FAN MOTOR REPLACEMENT

52C,PSERIES36MOST FREQUENT PTAC SERVICE QUESTIONS1. Can remote wall thermostats be used on standard (AA) models?No, only for use on remote control (RC

Page 31 - WIRING DIAGRAMS

37ACCESSORIES*Extended metal wall sleeve also available in 26 in. and 28 in. depth.†Custom colors are also available.ACCESSORY FORM NUMBER PART NUMBER

Page 34

52C,PSERIES4OPEN THE CONTROL BOXThe control box is factory wired. To open the box, remove the 2 screws on the top of the control box and lower the fro

Page 35 - STANDARD COOLING ONLY UNITS

Copyright 2002 Carrier CorporationManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and

Page 36

5ACCESSING UNIT COMPONENTSACCESSING INDOOR-AIR SECTION COMPONENTS (UNITS WITH LATERAL DUCT ACCESSORY) REMOVE LATERAL DUCT EXTENSION ACCESSORY ONLY O

Page 37 - ACCESSORIES

52C,PSERIES6 DETACH THE CONDENSER ORIFICE FROM THE CONDENSER COIL1. Remove top half of condenser orifice. a. Unscrew the top half of the condenser o

Page 38

7GUSSETSCREWSGUSSETSCREWSPARTITION GUSSETCONDENSERORIFICE (PLASTIC)GUSSETCONDENSERORIFICECAPTIVESCREWS (2)CAPTIVESCREWS (2)FIGURE 12 — GUSSET REMOVALF

Page 39

52C,PSERIES8OUTDOOR COIL TUBESHEET SCREWSHUB CLAMPCONDENSERFANSCREW SCREWDISCHARGEGRILLEFRONT PANEL(BACK VIEW)CONTROL DOORHINGE PINSFIGURE 16 — LOCATI

Page 40 - Tab 9a 11a

9GENERAL CLEANINGMaintaining proper performance of 52C,P systems requires conscientious cleaning and care of compo-nents. See Figure 20. Specific comp

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