York BCH 036 Table Of Contents, Sequence Of Operations Overview, Cooling Sequence Of Operation

Page 2
TABLE OF CONTENTS

177820-YIM-A-0506

TABLE OF CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 4 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . 4 APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . 5 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION SAFETY INFORMATION: . . . . . . . . 5 LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . 6 CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . 7 COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . 8 THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 POWER AND CONTROL WIRING . . . . . . . . . . . . . . 10 OPTIONS/ACCESSORIES . . . . . . . . . . . . . . . . . . . . 10

ELECTRIC HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

POWER EXHAUST/BAROMETRIC RELIEF DAMPER AND RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

ECONOMIZER AND POWER EXHAUST DAMPER SET POINT ADJUSTMENTS AND INFORMATION 11

MINIMUM POSITION ADJUSTMENT . . . . . . . . . . . . 12 ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . 12

POWER EXHAUST DAMPER SETPOINT (WITH OR WITHOUT POWER EXHAUST) . . . . . . . . . . . . . . . . 12

PHASING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 SUPPLY AIR BLOWERS . . . . . . . . . . . . . . . . . . . . . 26 CHECKING SUPPLY AIR CFM . . . . . . . . . . . . . . . . 26

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SEQUENCE OF OPERATIONS OVERVIEW . . . . . . 27

COOLING SEQUENCE OF OPERATION . . . . . . . . 27

CONTINUOUS BLOWER . . . . . . . . . . . . . . . . . . . . . . 27 INTERMITTENT BLOWER . . . . . . . . . . . . . . . . . . . . 28 NO OUTDOOR AIR OPTIONS . . . . . . . . . . . . . . . . . 28

ECONOMIZER WITH SINGLE ENTHALPY SENSOR - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ECONOMIZER WITH DUAL ENTHALPY

SENSORS - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ECONOMIZER (SINGLE OR DUAL) WITH POWER EXHAUST - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

MOTORIZED OUTDOOR AIR DAMPERS - . . . . . . . 28

COOLING OPERATION ERRORS . . . . . . . . . . . . . 28

HIGH-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . 28 LOW-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . 29 FREEZESTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 LOW AMBIENT COOLING . . . . . . . . . . . . . . . . . . . . . 29

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . 29 COMPRESSOR PROTECTION . . . . . . . . . . . . . . . 29 FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 HEATING SEQUENCE OF OPERATIONS . . . . . . . 30

WITH OR WITHOUT ELECTRIC HEAT . . . . . . . . . . . 30 DEFROST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 FORCED DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . 30

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . 30 HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . 31

START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . 31

PRESTART CHECK LIST . . . . . . . . . . . . . . . . . . . . 31 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . 32 POST START CHECK LIST . . . . . . . . . . . . . . . . . . 32 SHUT DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 32

COOLING TROUBLESHOOTING GUIDE . . . . . . . . 32 UNIT FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . 34

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . 34 FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 OUTDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2

Unitary Products Group

Page 1 Page 3
Image 2
Page 1 Page 3
Contents CONTENTS BCHINSTALLATION MANUAL SUNLINE SINGLE PACKAGE HEAT PUMPCOOLING SEQUENCE OF OPERATION TABLE OF CONTENTSSEQUENCE OF OPERATIONS OVERVIEW LIST OF FIGURES LIST OF TABLESINSPECTION SAFETY CONSIDERATIONSGENERAL REFERENCEPRODUCT NOMENCLATURE INSTALLATIONINSTALLATION SAFETY INFORMATION LIMITATIONSRIGGING AND HANDLING TABLE 1 UNIT APPLICATION DATA BCHLOCATION CLEARANCESFIGURE 1 - RECOMMENDED DRAIN PIPING COMPRESSORS DUCTWORKCONDENSATE DRAIN FIGURE 2 - COMPRESSOR RESTRAINING BRACKETSERVICE ACCESS FILTERSFIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING TYPICAL POWER WIRINGTYPICAL CONTROL WIRING COOLING / HEATING 24 VOLT THERMOSTATOPTIONS/ACCESSORIES POWER AND CONTROL WIRINGTABLE 2 CONTROL WIRE SIZES THERMOSTATTABLE 3 ELECTRIC HEATER CFM LIMITATIONS ECONOMIZER/MOTORIZED DAMPER AND RAIN HOODMINIMUM POSITION ADJUSTMENT FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENTFIGURE 5 - HONEYWELL ECONOMIZER CONTROL W7212 ENTHALPY SET POINT ADJUSTMENTFIGURE 6 - FOUR AND SIX POINT LOADING TABLE 5 BCH 4 POINT LOADS WEIGHT DISTRIBUTIONTABLE 6 BCH 6 POINT LOADS WEIGHT DISTRIBUTION TABLE 4 CENTER OF GRAVITY ALL MODELSTABLE 8 OPERATING WEIGHTS LBS TABLE 7 PHYSICAL DATACOMPRESSORS Unitary Products Group None Unitary Products Group POWER SUPPLY TABLE 11 ELECTRIC HEAT CORRECTION FACTORSTABLE 12 VOLTAGE LIMITATIONS1 NOMINAL VOLTAGEDETAIL “B” FIGURE 8 - UNIT WITH ECONOMIZER RAINHOODDETAIL “A” TABLE 13 UTILITIES ENTRY FIGURE 10 - UNIT DIMENSIONS REAR VIEWFIGURE 11 - DISCONNECT/BLOWER ACCESS LOCATION TABLE 14 MINIMUM CLEARANCESUnitary Products Group Page Unitary Products Group Unitary Products Group TABLE 19 BELT DRIVE BLOWER MOTOR AND DRIVE DATA177820-YIM-A-0506 PHASING FIGURE 12 - BELT ADJUSTMENTTABLE 20 STATIC RESISTANCES 5.Afteradjusting,re-tightennutsASEQUENCE OF OPERATIONS OVERVIEW OPERATIONFIGURE 13 - PRESSURE DROP ACROSS COIL COOLING SEQUENCE OF OPERATIONHIGH-PRESSURELIMIT SWITCH COOLING OPERATION ERRORSECONOMIZER SINGLE OR DUAL WITH POWER EXHAUST INTERMITTENT BLOWERLOW-PRESSURELIMIT SWITCH SAFETY CONTROLSCOMPRESSOR PROTECTION FREEZESTATSAFETY CONTROLS HEAT ANTICIPATOR SETPOINTS TABLE 21 ELECTRIC HEAT LIMIT CONTROL SETTINGSTART-UPCOOLING TABLE 22 ELECTRIC HEAT ANTICIPATOR SETPOINTSOPERATING INSTRUCTIONS TROUBLESHOOTINGCOOLING TROUBLESHOOTING GUIDE POST START CHECK LISTUnitary Products Group 177820-YIM-A-0506a.24 volts at the thermostat Y1 terminal UNIT FLASH CODES MAINTENANCENORMAL MAINTENANCE TABLE 23 UNIT CONTROL BOARD FLASH CODES177820-YIM-A-0506 MOTORSOUTDOOR COIL Unitary Products GroupNorman Unitary5005 Products
Top Page Image Contents