Johnson Controls BQ 048 - Manuals

Johnson Controls BQ 048 – Manual in PDF format online.

Manuals:

Manual

Manual Johnson Controls BQ 048

Summary

Page 2 - TABLE OF CONTENTS

364985-XIM-B-0508 2 Johnson Controls Unitary Products TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 4 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REFERENCE . . . ....

Page 4 - Johnson Controls Unitary Products

364985-XIM-B-0508 4 Johnson Controls Unitary Products GENERAL YORK Model BQ units are single package heat pumpsequipped with optional factory installed electric heat-ers. These are designed for outdoor installation on arooftop or slab. The units are completely assembled on rigid, perma-nently attach...

Page 5 - PRODUCT NOMENCLATURE; -5 Ton Sunline Simplicity Model Number Nomenclature

364985-XIM-B-0508 Johnson Controls Unitary Products 5 PRODUCT NOMENCLATURE B Q 048 N04 A 2 A AA 1 0 1 2 4 A Product Category B = HP, Single Pkg., R-22 A = Direct Drive Airflow B = Direct Drive/Single Input Economizer D = Direct Drive/Motorized DamperN = Belt DriveP = Belt Drive/Single Input Economiz...

Page 6 - INSTALLATION; INSTALLATION SAFETY INFORMATION:; UNIT MODEL NUMBER

364985-XIM-B-0508 6 Johnson Controls Unitary Products 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 available to...

Page 7 - RIGGING AND HANDLING

364985-XIM-B-0508 Johnson Controls Unitary Products 7 RIGGING AND HANDLING Exercise care when moving the unit. Do not removeany packaging until the unit is near the place of installa-tion. Rig the unit by attaching chain or cable slings tothe lifting holes provided in the base rails. Spreaderbars, w...

Page 8 - COMPRESSORS

364985-XIM-B-0508 8 Johnson Controls Unitary Products COMPRESSORS Units are shipped with compressor mountings factory-adjusted and ready for operation. Units with scroll compressors have a shipping bracketwhich must be removed after the unit is set in place.See Figure 2. FILTERS One-inch or two-inch...

Page 9 - FIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING; MULTI STAGE; SINGLE STAGE; TYPICAL POWER WIRING

364985-XIM-B-0508 Johnson Controls Unitary Products 9 FIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING REFER TO THE ELECTRICAL DATATABLES TO SIZE THE DISCONNECTSWITCH, OVERCURRENT PROTEC-TION AND WIRING. RC RH Y1 Y2 W1 W2 G LED 1 LED 2 COM A1 A2 T T B R Y1 Y2 G C X OCC W2 W1 THERMOSTAT 1 TERMINAL...

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

364985-XIM-B-0508 10 Johnson Controls Unitary Products 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 ...

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

364985-XIM-B-0508 Johnson Controls Unitary Products 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 outdoo...

Page 12 - MINIMUM POSITION ADJUSTMENT

364985-XIM-B-0508 12 Johnson Controls Unitary Products 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 posi...

Page 13 - FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT; FIGURE 5 - HONEYWELL ECONOMIZER CONTROL W7212

364985-XIM-B-0508 Johnson Controls Unitary Products 13 FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT 40 (4) 70 (21) 50 (10) 55 (13) 60 (16) 65 (18) 35 (2) 45 (7) 75 (24) 80 (27) 35 (2) 40 (4) 45 (7) 50 (10) 55 (13) 60 (16) 65 (18) 70 (21) 75 (24) 80 (27) 85 (29) 85 (29) 90 (32) 90 (32) 105 (41) 110 (43) 1...

Page 14 - FIGURE 6 - FOUR AND SIX POINT LOADING; DIMENSION; TABLE 5: BQ 4 POINT LOADS WEIGHT DISTRIBUTION; TABLE 6: BQ 6 POINT LOADS WEIGHT DISTRIBUTION; UNIT

364985-XIM-B-0508 14 Johnson Controls Unitary Products FIGURE 6 - FOUR AND SIX POINT LOADING 44 7 / 8 82 1 / 4 Y X A B C D CONDENSER COILEND OF UNIT FRONT OF UNIT APPROXIMATECENTER OF GRAVITY BACK OF UNIT 44 7 / 8 82 1 / 4 Y X A B C D E F CONDENSER COILEND OF UNIT FRONT OF UNIT APPROXIMATECENTER OF ...

Page 15 - TABLE 7: PHYSICAL DATA

364985-XIM-B-0508 Johnson Controls Unitary Products 15 TABLE 7: PHYSICAL DATA MODELS BQ 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 Fan Motor HP (Belt Drive High Static) 1 ...

Page 22 - TABLE 15: ELECTRIC HEAT CORRECTION; NOMINAL VOLTAGE; TABLE 16: VOLTAGE LIMITATIONS; POWER SUPPLY

364985-XIM-B-0508 22 Johnson Controls Unitary Products TABLE 15: 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 16: VOLTAGE LIMITATIONS 1 1. Utilization Range “A” in accordance with ARI Standard 110. POWER SUPPLY ...

Page 23 - FIGURE 8 - UNIT WITH ECONOMIZER RAINHOOD

364985-XIM-B-0508 Johnson Controls Unitary Products 23 FIGURE 8 - UNIT WITH ECONOMIZER RAINHOOD FIGURE 9 - UNIT WITH FIXED OUTDOOR AIR/MOTORIZED DAMPER RAINHOOD DETAIL “A” DETAIL “B”

Page 24 - TABLE 17: UTILITIES ENTRY

364985-XIM-B-0508 24 Johnson Controls Unitary Products FIGURE 10 - UNIT DIMENSIONS (REAR VIEW) FIGURE 11 - DISCONNECT/BLOWER ACCESS LOCATION TABLE 17: 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 ...

Page 26 - SIDE DUCT APPLICATION

364985-XIM-B-0508 26 Johnson Controls Unitary Products TABLE 23: SUPPLY AIR BLOWER PERFORMANCE (BQ060 BELT DRIVE) - SIDE DUCT APPLICATION Air Flow (CFM) Available External Static Pressure - IWG 1 1. Blower performance includes 1” filters. See STATIC RESISTANCE table for additional applications.2. Se...

Page 27 - BOTTOM DUCT APPLICATION; TABLE 27: BELT DRIVE RPM SELECTION

364985-XIM-B-0508 Johnson Controls Unitary Products 27 TABLE 26: SUPPLY AIR BLOWER PERFORMANCE (BQ036, 048 & 060 DIRECT DRIVE) - BOTTOM DUCT APPLICATION UNIT TONNAGE MOTOR 1 SPEED AVAILABLE EXTERNAL STATIC PRESSURE - IWG 2 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 CFM W A TTS CFM W A TTS CFM W A TTS C...

Page 28 - Example Supply Air Blower Performance; Table X: RPM Selection

364985-XIM-B-0508 28 Johnson Controls Unitary Products Drive Selection 1. Determine desired airflow. 2. Calculate or measure the amount of external static pressure. 3. Using the operating point determined from steps 1 & 2, locate this point on the appropriate supply air blower performance table....

Page 29 - Altitude/Temperature Correction Factors; Air; Correction Factor

364985-XIM-B-0508 Johnson Controls Unitary Products 29 Altitude/Temperature Correction Factors Air Temp. Altitude (Ft.) 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 40 1.060 1.022 0.986 0.950 0.916 0.882 0.849 0.818 0.788 0.758 0.729 50 1.039 1.002 0.966 0.931 0.898 0.864 0.832 0.802 0.772 0...

Page 30 - PHASING; Pulleys can be adjusted in half turn increments.; FIGURE 12 - BELT ADJUSTMENT; PROCEDURE FOR ADJUSTING BELT TENSION:

364985-XIM-B-0508 30 Johnson Controls Unitary Products 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 ...

Page 31 - OPERATION; SEQUENCE OF OPERATIONS OVERVIEW; CONTINUOUS BLOWER; FIGURE 13 - PRESSURE DROP ACROSS COIL

364985-XIM-B-0508 Johnson Controls Unitary Products 31 under field conditions would be inaccurate. Toassure a dry coil, the compressors should be deac-tivated while the test is being run. 4. Knowing the pressure drop across a dry coil, theactual CFM through the unit can be determinedfrom the curve i...

Page 32 - COOLING OPERATION ERRORS

364985-XIM-B-0508 32 Johnson Controls Unitary Products ECONOMIZER WITH SINGLE ENTHALPY SENSOR - When the room thermostat calls for cooling, the lowvoltage control circuit from “R” to “G” and “Y1” is com-pleted. The UCB energizes the blower motor (if the fanswitch on the room thermostat is set in the...

Page 33 - LOW AMBIENT COOLING; SAFETY CONTROLS; WITH OR WITHOUT ELECTRIC HEAT

364985-XIM-B-0508 Johnson Controls Unitary Products 33 ing is still present at the conclusion of the ASCD, theUCB will re-energize the compressor. Should a freezestat open three times within two hoursof operation, the UCB will lock-out the compressor andflash a code (see Table 32). LOW AMBIENT COOLI...

Page 34 - DEFROST MODE

364985-XIM-B-0508 34 Johnson Controls Unitary Products DEFROST MODE As mentioned earlier, the defrost control (DC) utilizes atime/temperature defrost scheme. The following twoconditions must be met before the DC will enter adefrost mode: The defrost thermostat (SD) must be closed. This nor-mally ope...

Page 35 - TROUBLESHOOTING; HEATER

364985-XIM-B-0508 Johnson Controls Unitary Products 35 Refer to Table 31 for the required electric heat anticipa-tor setting. START-UP (COOLING) PRESTART CHECK LIST After installation has been completed: 1. Check the electrical supply voltage being supplied.Be sure that it is the same as listed on t...

Page 37 - For units without economizers; UNIT FLASH CODES

364985-XIM-B-0508 Johnson Controls Unitary Products 37 The UCB will flash the last five alarms on the LED. Ifthe compressor is locked out, cancel any call for cool-ing. This will reset any compressor lock outs. NOTE: While the above step will reset any lockouts,the compressor may be held off for the...

Page 38 - MAINTENANCE; NORMAL MAINTENANCE

364985-XIM-B-0508 38 Johnson Controls Unitary Products MAINTENANCE NORMAL MAINTENANCE FILTERS Inspect once a month. Replace disposable or cleanpermanent type as necessary. DO NOT replace per-manent type with disposable. The dimensional size ofthe replacement filter must be the same as thereplaced fi...