Filters, Service Access | York BCH 036, 048 & 060 specs

177820-YIM-A-0506

Do not loosen compressor mounting bolts.

FILTERS

One-inch or two-inch filters can be supplied with each unit. Filters must always be installed ahead of the evaporator coil and must be kept clean or replaced with same size and type. Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shut- down. Minimum filter area and required sizes are shown in Physical Data Table 7.

SERVICE ACCESS

The following removable panels provide access to all serviceable components:

•Compressor compartment

•Electric Heat compartment

•Blower compartment

•Main control box

•Filter compartment

Refer to the Dimensions and Clearances shown in Fig- ures 7 and 11 for location of these access panels.

Make sure that all screws and panel latches are replaced and properly positioned on the unit to maintain an airtight seal.

8	Unitary Products Group

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York BCH 036, 048 & 060 installation manual Filters, Service Access

Contents

BCH INSTALLATION MANUALCONTENTS SUNLINE SINGLE PACKAGE HEAT PUMP COOLING SEQUENCE OF OPERATION TABLE OF CONTENTSSEQUENCE OF OPERATIONS OVERVIEW LIST OF FIGURES LIST OF TABLES SAFETY CONSIDERATIONS GENERALINSPECTION REFERENCE INSTALLATION INSTALLATION SAFETY INFORMATIONPRODUCT NOMENCLATURE LIMITATIONS TABLE 1 UNIT APPLICATION DATA BCH LOCATIONRIGGING AND HANDLING CLEARANCES DUCTWORK CONDENSATE DRAINFIGURE 1 - RECOMMENDED DRAIN PIPING COMPRESSORS FIGURE 2 - COMPRESSOR RESTRAINING BRACKET SERVICE ACCESS FILTERS TYPICAL POWER WIRING TYPICAL CONTROL WIRINGFIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING COOLING / HEATING 24 VOLT THERMOSTAT POWER AND CONTROL WIRING TABLE 2 CONTROL WIRE SIZESOPTIONS/ACCESSORIES THERMOSTAT TABLE 3 ELECTRIC HEATER CFM LIMITATIONS ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT FIGURE 5 - HONEYWELL ECONOMIZER CONTROL W7212MINIMUM POSITION ADJUSTMENT ENTHALPY SET POINT ADJUSTMENT TABLE 5 BCH 4 POINT LOADS WEIGHT DISTRIBUTION TABLE 6 BCH 6 POINT LOADS WEIGHT DISTRIBUTIONFIGURE 6 - FOUR AND SIX POINT LOADING TABLE 4 CENTER OF GRAVITY ALL MODELS TABLE 8 OPERATING WEIGHTS LBS TABLE 7 PHYSICAL DATA COMPRESSORS Unitary Products Group None Unitary Products Group TABLE 11 ELECTRIC HEAT CORRECTION FACTORS TABLE 12 VOLTAGE LIMITATIONS1POWER SUPPLY NOMINAL VOLTAGE DETAIL “B” FIGURE 8 - UNIT WITH ECONOMIZER RAINHOODDETAIL “A” FIGURE 10 - UNIT DIMENSIONS REAR VIEW FIGURE 11 - DISCONNECT/BLOWER ACCESS LOCATIONTABLE 13 UTILITIES ENTRY TABLE 14 MINIMUM CLEARANCES Unitary Products Group Page Unitary Products Group Unitary Products Group TABLE 19 BELT DRIVE BLOWER MOTOR AND DRIVE DATA177820-YIM-A-0506 FIGURE 12 - BELT ADJUSTMENT TABLE 20 STATIC RESISTANCESPHASING 5.Afteradjusting,re-tightennutsA OPERATION FIGURE 13 - PRESSURE DROP ACROSS COILSEQUENCE OF OPERATIONS OVERVIEW COOLING SEQUENCE OF OPERATION COOLING OPERATION ERRORS ECONOMIZER SINGLE OR DUAL WITH POWER EXHAUSTHIGH-PRESSURELIMIT SWITCH INTERMITTENT BLOWER SAFETY CONTROLS COMPRESSOR PROTECTIONLOW-PRESSURELIMIT SWITCH FREEZESTAT SAFETY CONTROLS TABLE 21 ELECTRIC HEAT LIMIT CONTROL SETTING START-UPCOOLINGHEAT ANTICIPATOR SETPOINTS TABLE 22 ELECTRIC HEAT ANTICIPATOR SETPOINTS TROUBLESHOOTING COOLING TROUBLESHOOTING GUIDEOPERATING INSTRUCTIONS POST START CHECK LIST Unitary Products Group 177820-YIM-A-0506a.24 volts at the thermostat Y1 terminal MAINTENANCE NORMAL MAINTENANCEUNIT FLASH CODES TABLE 23 UNIT CONTROL BOARD FLASH CODES MOTORS OUTDOOR COIL177820-YIM-A-0506 Unitary Products Group Unitary 5005Norman Products