York BCH 036 - Manuals - manualsarea.com

Page 2 - TABLE OF CONTENTS

177820-YIM-A-0506 2 Unitary Products Group TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 4 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REFERENCE . . . . . . . . . ...

Page 4 - Unitary Products Group

177820-YIM-A-0506 4 Unitary Products Group GENERAL YORK Model BCH units are single package heatpumps. These are designed for outdoor installation ona rooftop or slab. The units are completely assembled on rigid, perma-nently attached base rails. All piping, refrigerantcharge, and electrical wiring i...

Page 5 - PRODUCT NOMENCLATURE; INSTALLATION SAFETY INFORMATION:; Local plumbing and waste water codes.

177820-YIM-A-0506 Unitary Products Group 5 PRODUCT NOMENCLATURE INSTALLATION INSTALLATION SAFETY INFORMATION: Read these instructions before continuing this appli-ance installation. This is an outdoor combination heat-ing and cooling unit. The installer must assure thatthese instructions are made av...

Page 6 - LOCATION; Unit is designed for outdoor installation only.; RIGGING AND HANDLING; UNIT MODEL NUMBER

177820-YIM-A-0506 6 Unitary Products Group LOCATION Use the following guidelines to select a suitable loca-tion for these units. 1. Unit is designed for outdoor installation only. 2. Condenser coils must have an unlimited supply ofair. 3. Where a choice of location is possible, position theunit on e...

Page 8 - FILTERS

177820-YIM-A-0506 8 Unitary Products Group FILTERS One-inch or two-inch filters can be supplied with eachunit. Filters must always be installed ahead of theevaporator coil and must be kept clean or replaced withsame size and type. Dirty filters will reduce the capacityof the unit and will result in ...

Page 9 - TYPICAL POWER WIRING; SINGLE STAGE

177820-YIM-A-0506 Unitary Products Group 9 TYPICAL POWER WIRING TYPICAL CONTROL WIRING FIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING REFER TO THE ELECTRICAL DATATABLES TO SIZE THE DISCONNECTSWITCH, OVERCURRENT PROTEC-TION AND WIRING. RC Y R Y1 Y2 W1 W W2 G C G RH THERMOSTAT TERMINALS UNIT TERM...

Page 10 - ELECTRIC HEAT; MUST BE USED; so that water or moisture; TABLE 2: CONTROL WIRE SIZES; Wire Size

177820-YIM-A-0506 10 Unitary Products Group THERMOSTAT The room thermostat should be located on an insidewall approximately 56 inches above the floor where itwill not be subject to drafts, sun exposure or heat fromelectrical fixtures or appliances. Follow the manufac-turer's instructions enclosed wi...

Page 11 - ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD; TABLE 3: ELECTRIC HEATER CFM LIMITATIONS; UNITMODEL SIZE NOMINAL

177820-YIM-A-0506 Unitary Products Group 11 ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD The instruction for the optional economizer/motorizeddamper and rain hood can be found in form 035-07364-000. Use these instructions when field assem-bling an economizer rain hood onto a unit. The outdoorand return...

Page 12 - MINIMUM POSITION ADJUSTMENT; FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT

177820-YIM-A-0506 12 Unitary Products Group MINIMUM POSITION ADJUSTMENT With thermostat set to indoor fan on position, or termi-nals “R” to “G” energized, turn the Minimum PositionAdjusting screw (located on the damper control mod-ule) counterclockwise until the desired minimumdamper position has be...

Page 13 - FIGURE 6 - FOUR AND SIX POINT LOADING; DIMENSION; TABLE 5: BCH 4 POINT LOADS WEIGHT DISTRIBUTION; TABLE 6: BCH 6 POINT LOADS WEIGHT DISTRIBUTION; UNIT

177820-YIM-A-0506 Unitary Products Group 13 FIGURE 6 - FOUR AND SIX POINT LOADING 44 7 / 8 82 1 / 4 Y X A B C D CONDENSER COIL END OF UNIT FRONT OF UNIT APPROXIMATE CENTER OF GRAVITY BACK OF UNIT 44 7 / 8 82 1 / 4 Y X A B C D E F CONDENSER COIL END OF UNIT FRONT OF UNIT APPROXIMATE CENTER OF GRAVITY...

Page 14 - TABLE 7: PHYSICAL DATA

177820-YIM-A-0506 14 Unitary Products Group TABLE 7: PHYSICAL DATA MODELS BCH 036 048 060 EVAPORATOR BLOWER Centrifugal Blower (Dia. x Wd. in.) 12 X 10 12 X 10 12 X 10 Fan Motor HP (Direct Drive) 1/2 3/4 1 Fan Motor HP (Belt Drive) 1 1/2 1 1/2 1 1/2 EVAPORATOR COIL Rows Deep 4 3 3 Fins Per Inch 16 1...

Page 19 - TABLE 11: ELECTRIC HEAT CORRECTION; NOMINAL VOLTAGE; TABLE 12: VOLTAGE LIMITATIONS; POWER SUPPLY

177820-YIM-A-0506 Unitary Products Group 19 TABLE 11: ELECTRIC HEAT CORRECTION FACTORS NOMINAL VOLTAGE VOLTAGE kW CAP. MULTIPLIER 208 208 0.75 240 230 0.92 480 460 0.92 600 575 0.92 TABLE 12: VOLTAGE LIMITATIONS 1 1. Utilization Range “A” in accordance with ARI Standard 110. POWER SUPPLY VOLTAGE MIN...

Page 20 - FIGURE 8 - UNIT WITH ECONOMIZER RAINHOOD

177820-YIM-A-0506 20 Unitary Products Group FIGURE 8 - UNIT WITH ECONOMIZER RAINHOOD FIGURE 9 - UNIT WITH FIXED OUTDOOR AIR/MOTORIZED DAMPER RAINHOOD DETAIL “A” DETAIL “B”

Page 21 - TABLE 14: MINIMUM CLEARANCES

177820-YIM-A-0506 Unitary Products Group 21 FIGURE 10 - UNIT DIMENSIONS (REAR VIEW) FIGURE 11 - DISCONNECT/BLOWER ACCESS LOCATION TABLE 13: UTILITIES ENTRY HOLE OPENING SIZE (DIA.) USED FOR A 7/8” KO 1 Control Wiring 2 Side Bottom B 2” KO 1 Power Wiring Side Bottom C 1-5/8” KO Gas Piping (Front) D 1...

Page 25 - TABLE 19: BELT DRIVE BLOWER MOTOR AND DRIVE DATA

177820-YIM-A-0506 Unitary Products Group 25 TABLE 18: SUPPLY AIR BLOWER PERFORMANCE (3 - 5 TON DIRECT DRIVE) - SIDE DUCT APPLICATION CFM WATTS CFM WATTS CFM WATTS CFM WATTS CFM WATTS HI - - - - - - 1720 825 1665 795 MED 1660 850 1630 820 1590 780 1550 750 1500 720 LOW 1470 750 1440 725 1410 700 1370...

Page 26 - PHASING; The supply air CFM must be within the limitations; TABLE 20: STATIC RESISTANCES; FIGURE 12 - BELT ADJUSTMENT; PROCEDURE FOR ADJUSTING BELT TENSION:

177820-YIM-A-0506 26 Unitary Products Group PHASING Check for proper compressor rotation. If the blower orcompressors rotate in the wrong direction at start-up,the electrical connection to the unit is misphased.Change the incoming line connection phasing to obtainproper rotation. (Scroll compressors...

Page 27 - OPERATION; SEQUENCE OF OPERATIONS OVERVIEW; CONTINUOUS BLOWER; FIGURE 13 - PRESSURE DROP ACROSS COIL

177820-YIM-A-0506 Unitary Products Group 27 Start the supply air blower motor. Adjust the resis-tances in both the supply and the return air duct sys-tems to balance the air distribution throughout theconditioned space. The job specifications may requirethat this balancing be done by someone other t...

Page 28 - COOLING OPERATION ERRORS

177820-YIM-A-0506 28 Unitary Products Group INTERMITTENT BLOWER With the room thermostat fan switch set to “AUTO” andthe system switch set to either the “AUTO” or “HEAT”settings, the blower is energized whenever a cooling orheating operation is requested. The blower is ener-gized after any specified...

Page 29 - LOW-PRESSURE LIMIT SWITCH; SAFETY CONTROLS; A suction line freezestat to protect against low; COMPRESSOR PROTECTION

177820-YIM-A-0506 Unitary Products Group 29 Should a high-pressure switch open three times withintwo hours of operation, the UCB will lock-out the com-pressor and flash a code (see Table 23). LOW-PRESSURE LIMIT SWITCH The low-pressure limit switch is not monitored duringthe initial 30 seconds of a c...

Page 30 - FORCED DEFROST

177820-YIM-A-0506 30 Unitary Products Group The ASCD is initiated on unit start-up and on any com-pressor reset or lock-out. FLASH CODES The UCB will initiate a flash code associated witherrors within the system. Refer to UNIT CONTROLBOARD FLASH CODES Table 23. RESET Remove the call for cooling, by ...

Page 31 - HEATER

177820-YIM-A-0506 Unitary Products Group 31 HEAT ANTICIPATOR SETPOINTS It is important that the anticipator setpoint be correct.Too high of a setting will result in longer heat cyclesand a greater temperature swing in the conditionedspace. Reducing the value below the correct setpointwill give short...

Page 32 - TROUBLESHOOTING

177820-YIM-A-0506 32 Unitary Products Group 7. Measure evaporator fan motor's amp draw. 8. Set the room thermostat fan switch to off. 9. Turn unit electrical power off. OPERATING INSTRUCTIONS 1. Turn unit electrical power on. 2. Set the room thermostat setting to lower than theroom temperature. 3. F...

Page 34 - For units without economizers; UNIT FLASH CODES; MAINTENANCE; NORMAL MAINTENANCE

177820-YIM-A-0506 34 Unitary Products Group of the UCB. If 24 volts is present, trace the wiringfrom Y1 “OUT” for incorrect wiring. If 24 volts is notpresent at the Y1 “OUT” terminal, the UCB must bereplaced. 12. For units without economizers : If 24 volts is present at the Y1 OUT terminal, check fo...

Page 35 - MOTORS

177820-YIM-A-0506 Unitary Products Group 35 the replacement filter must be the same as thereplaced filter. MOTORS Outdoor fan motors are permanently lubricated andrequire no maintenance. Indoor Blower Motor and Drive - The indoor blowermotor features ball bearings that do not requireperiodic lubrica...