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FORM 145.32-IOM4 (818) 

8

 

GENERAL INFORMATION 

Models  2  to  8  tons  can  be  ordered  as  packaged, 

factory-charged  unitized  packages  or  as  factory  split. 

The  10  ton  model  comes  factory-split.    See  ‘Cabinet 

Configuration Options’ for more information. 

Units can be turned on  their side for short periods of 

time,  which  allows  passage  through  standard  door 

sizes. All unit components are securely mounted inside 

the heavy gauge galvanized steel cabinet. All units are 

lined with 1/2" thick - 2 lb density acoustical insulation 

to  ensure  the  quietest  operation.  All  models  are 

provided  with  medium-efficiency  2"  thick  throwaway 

filters rated MERV 7. 

All units 2 to 5 tons utilize a single scroll compressor.  

The 8 and 10 ton model is a dual scroll compressor unit 

with two independent refrigerant circuits. All units come 

standard with a microprocessor control board (refer to 

‘Microprocessor’ section).  

Units will operate reliably at outdoor ambient down to 

50

F.  In  applications  requiring  operation  below  this 

temperature,  a  low  ambient  damper  accessory  is 

available.  The  damper  installs  on  the  condenser  air 

intake, and allows operation to 0

 F ambient. 

ONLY  QUALIFIED  PERSONNEL  SHOULD 

PERFORM  INSTALLATION  AND  SERVICE 

OF THIS EQUIPMENT. 

PRE-INSTALLATION INSPECTION OF EQUIPMENT 

All units are factory tested to ensure safe operation and 

quality  assembly.  Units  are  packaged  and  sealed  on 

shipping skids and shipped in first class condition. Torn 

and  broken  packaging,  scratched  or  dented  panels 

should  be  reported  to  carrier  immediately.  Internal 

inspection  of  all  units  should  be  performed  prior  to 

installation.  Remove  all  access  doors  and  check  for 

visual  defects  that  can  occur  during  transport.  Any 

problems found internally should be reported to carrier 

and  manufacturer  immediately.  Refrigerant  circuit 

should be checked to ensure no leaks have occurred 

during  shipment.  Install  gauge  set  to  high  and  low 

pressure  ports  to  confirm  pressure  has  been 

maintained  and  no  leaks  have  occurred  during 

shipment.  Repair  any  damage  prior  to  installation  to 

ensure safe operation.  

RECORD  ANY  UNIT  DAMAGE  ON  THE 

BILL  OF  LADING  AND  REPORT  TO 

CARRIER AND FACTORY IMMEDIATELY. 

SHIPPING  AND  HANDLING  DAMAGES 

ARE NOT WARRANTY ITEMS.  

RIGGING  

PRIOR  TO  MOUNTING  UNIT,  CHECK 

INDIVIDUAL  UNIT  WEIGHTS  (PAGE  10) 

AND  VERIFY  LIFTING  CAPACITY  OF 

LIFTING EQUIPMENT EXCEEDS WEIGHT 

OF UNITS BY SAFE MARGINS. FAILURE 

TO  DO  SO  MAY  RESULT  IN  UNIT 

DAMAGE, PERSONAL INJURY OR EVEN 

DEATH.  

To  ensure  safe  installation  of  the  unit  when  ceiling 

mount  application  is  specified,  estimate  the 

approximate  center  of  gravity  of  the  unit.  The 

configuration  of  internal  components  for  each  unit  is 

different and weight is unevenly distributed.  

DETERMINE  THE  ACTUAL  CENTER  OF 

GRAVITY  OF  THE  UNIT  BY  PERFORM-

ING  A  TEST  LIFT.  LIFTING  AN  UNBAL-

ANCED  UNIT  CAN  CAUSE  PERSONAL 

INJURY OR EVEN DEATH.  

INSTALLATION SITE 

LOCK  ALL  ELECTRICAL  POWER  SUP-

PLY  SWITCHES  IN  THE  OFF  POSITION 

BEFORE  INSTALLING  THE  UNIT.  FAIL-

URE  TO  DISCONNECT  POWER  SUPPLY 

MAY RESULT IN ELECTRICAL SHOCK OR 

EVEN DEATH.  

Location  -  To  ensure  unit  operates  at  maximum 

efficiencies,  choose  a  dry  indoor  area  where  the 

temperature  is  controlled  between  50

F  and  115

F. 

Consideration  of  surrounding  areas  should  be  taken 

when choosing a location to install the unit. Common 

vibration and sound levels associated with commercial 

equipment  may  be  objectionable  to  people  or 

equipment.  

FAILURE TO ALLOW ADEQUATE SPACE 

BETWEEN UNITS MAY RESULT IN POOR 

UNIT  PERFORMANCE  AND  POSSIBLE 

UNIT FAILURE.  

Install thermostats, air supplies and returns so that each 

unit  will  operate  only  on  individual  unit  control.  To 

assure fast drainage of condensate run-off, unit can be 

slightly pitched in the same direction as drain pan outlet. 

Содержание DSH Series

Страница 1: ...MODEL DSH024C 060C AND 096B 120B HORIZONTAL R 410A STYLE B C Issue Date August 30 2018 AIR COOLED SELF CONTAINED UNITS INSTALLATION OPERATION MAINTENANCE Supersedes 145 32 IOM4 1216 Form 145 32 IOM4 818 ...

Страница 2: ... and understood this document and any referenced materials This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are used in this document to alert the reader to areas of potential hazard DANGER indicates an imminently haz ardous situation which if not avoided will re...

Страница 3: ...e is available TABLE OF CONTENTS Safety Symbols 2 Changeability of This Document 3 Typical Installation Diagrams 4 General Information 7 Installation Pre Installation Inspection of Equipment 7 Rigging 7 Installation Site 7 Cabinet Configurations Unit Mounting 8 Separation of Units Evaporator Condenser 8 Physical Data 11 Service Clearances and Corner Weights 15 Interconnecting Refrigerant Tubing 18...

Страница 4: ...FORM 145 32 IOM4 818 4 ...

Страница 5: ...FORM 145 32 IOM4 818 5 DSH024C DSH060C SINGLE COMPRESSOR UNIT TYPICAL INSTALLATION DIAGRAM ...

Страница 6: ...FORM 145 32 IOM4 818 6 DSH096B 120B DUAL COMPRESSOR UNIT TYPICAL INSTALLATION DIAGRAM ...

Страница 7: ...FORM 145 32 IOM4 818 7 NOMENCLATURE TABLE ...

Страница 8: ... immediately Refrigerant circuit should be checked to ensure no leaks have occurred during shipment Install gauge set to high and low pressure ports to confirm pressure has been maintained and no leaks have occurred during shipment Repair any damage prior to installation to ensure safe operation RECORD ANY UNIT DAMAGE ON THE BILL OF LADING AND REPORT TO CARRIER AND FACTORY IMMEDIATELY SHIPPING AND...

Страница 9: ...aps and brackets from refrigerant piping and couplings before assembling and piping the units see pictures below 8 10 ton model shown Units may be either hung or floor mounted If unit is to be hung use all mounting points indicated regardless if unit is installed as a package or split system refer to typical installation diagram on Page 4 5 Use of minimum in dia hanger rods is strongly recommended...

Страница 10: ...cess wire into the evaporator panel 5 Remove the threaded wire bushing connecting the two electrical panels 6 Remove the unit top joining strip Take care to remove only those screws which attach the joining strip to the evaporator and condenser cabinets 7 Remove the two side cross member angles 8 Carefully pull the evaporator section away from the condenser section Take care not to damage the shor...

Страница 11: ... line set or if necessary position of unit module 3 Using a back up wrench tighten the female union nut until a definite increase in resistance is felt At this point most of threads will have been covered by the nut Ensure that the female and male bodies during any portion of the wrench installation do not rotate 4 Make note of the location of the female nut to the bulkhead Using a marker or scrib...

Страница 12: ... FIELD CONVERTIBLE OPTIONAL CONDENSER INTAKE FIELD CONVERTIBLE 3 4 NPT DRAIN CONNECTION 2 3 TON HORIZONTAL A C UNIT DIMENSIONAL DATA EVAPORATOR SECTION ELECTRICAL BOX ACCESS EVAPORATOR FAN ACCESS CONDENSER FAN ACCESS LOW VOLTAGE CONNECTION 23 75 7 18 7 00 56 00 71 88 C C 78 19 2 70 2 75 FRONT BACK FRONT ELECTRICAL POWER CONNECTION CONDENSER SECTION ELECTRICAL BOX ACCESS COMPRESSOR ACCESS EVAPORATO...

Страница 13: ...ER SECTION EVAPORATOR SECTION 35 62 C C 40 00 C C 80 50 C C 66 50 C C 69 10 86 19 ELECTRICAL POWER CONNECTION CONDENSER SECTION ELECTRICAL BOX ACCESS EVAPORATOR SECTION ELECTRICAL BOX ACCESS LOW VOLTAGE CONNECTION CONDENSER OPENINGS EVAPORATOR OPENINGS FRONT FRONT 17 50 18 50 15 00 16 00 10 12 9 73 8 13 8 75 CONDENSER FAN ACCESS EVAPORATOR FAN ACCESS 28 00 26 75 29 38 23 13 COMPRESSOR ACCESS EVAPO...

Страница 14: ... 00 4 75 17 00 25 00 21 25 10 88 85 21 80 00 1 25 1 00 CONDENSER SECTION ELECTRICAL BOX ACCESS EVAPORATOR SECTION ELECTRICAL BOX ACCESS EVAPORATOR BLOWER DRIVE ACCESS PANEL FILTER ACCESS BOTH SIDE CONDENSER BLOWER DRIVE ACCESS PANEL COMPRESSOR ACCESS PANEL CONDENSER OPENING 48 00 29 38 33 38 4 94 2 63 38 13 30 13 1 56 1 00 2 19 23 88 20 94 2 25 8 56 39 88 3 4 NPT DRAIN CONNECTION EVAPORATOR OPENIN...

Страница 15: ...SECTION ELECTRICAL BOX ACCESS EVAPORATOR SECTION ELECTRICAL BOX ACCESS EVAPORATOR BLOWER DRIVE ACCESS PANEL FILTER ACCESS BOTH SIDES CONDENSER BLOWER DRIVE ACCESS PANEL COMPRESSOR ACCESS PANEL CONDENSER DISCHARGE 61 00 29 35 33 25 4 94 2 5 38 10 30 10 1 58 1 25 2 20 11 26 41 79 3 4 NPT DRAIN CONNECTION EVAPORATOR DISCHARGE 2 94 TOP VIEW TX VALVE FILTER DRIER ACCESS PANEL 1 08 20 52 21 27 70 88 18 ...

Страница 16: ...ZONTAL A C UNIT SERVICE CLEARANCES SUPPLY AIR RETURN AIR CONDENSER INTAKE CONDENSER DISCHARGE CONDENSER SECTION EVAPORATOR SECTION FRONT CONDENSER FAN ACCESS EVAPORATOR FAN ACCESS 36 IN MINIMUM CLEARANCE 36 IN MINIMUM CLEARANCE 4 IN MINIMUM CLEARANCE FOR DRAIN TRAP ...

Страница 17: ... SHOWN CONDENSER INTAKE RETURN AIR SUPPLY AIR 8 TON HORIZONTAL A C UNIT SERVICE CLEARANCES EVAPORATOR SECTION CONDENSER SECTION EVAPORATOR SECTION CONDENSER SECTION TOP VIEW 4 IN MINIMUM CLEARANCE FOR DRAIN TRAP 36 IN MINIMUM CLEARANCE 36 IN MINIMUM CLEARANCE 36 IN MINIMUM CLEARANCE BACK VIEW ...

Страница 18: ...FORM 145 32 IOM4 818 18 UNIT CORNER WEIGHTS ...

Страница 19: ... checking all field brazed joints After completion of the leak check evacuate the interconnecting lines to hold a 350 micron vacuum If gauge pressure rises above 500 microns in one minute then evacuation is incomplete or the system has a leak RECOMMENDED REFRIGERANT LINE SIZES Model LESS THAN 75 LINEAR FEET LIQUID LINE SUCTION LINE DSH024C 3 8 3 4 DSH036C 3 8 3 4 DSH048C 1 2 7 8 DSH060C 1 2 7 8 DS...

Страница 20: ...al electrical codes when making electrical connections Units are completely factory wired for normal supply voltages i e 208 230 460 575V 3Ph 60Hz Confirm unit specifications by checking unit data plate The factory wiring terminates in two boxes one in each section of the unit The electrical control boxes are located behind outer access panels Each electrical compartment has its own control cover ...

Страница 21: ...FORM 145 32 IOM4 818 21 TYPICAL WIRING SCHEMATICS ...

Страница 22: ...FORM 145 32 IOM4 818 22 ...

Страница 23: ...30 3 60 2 15 9 110 0 3 00 8 5 3 00 8 5 52 78 60 DSH120B4 460 3 60 2 7 1 52 0 3 00 4 2 3 00 4 2 24 38 30 DSH120B5 575 3 60 2 5 1 39 5 3 00 3 4 3 00 3 4 18 28 20 ELECTRICAL DATA OVERSIZED EVAPORATOR MOTOR MODEL VOLTAGE COMPRESSOR EVAP FAN COND FAN MCA MAX FUSE CCT BKR AMP QTY RLA LRA HP FLA HP FLA DSH048C2 208 230 3 60 1 13 8 83 1 1 00 3 1 1 50 4 4 24 75 35 DSH048C4 460 3 60 1 6 2 41 0 1 00 1 5 1 50...

Страница 24: ...rive3 0 8 1 0 OUTDOOR CFM AVAILABLE EXTERNAL STATIC PRESSURE Inches W C 0 0 0 2 0 4 0 6 0 8 SUPPLY CFM 0 0 0 2 0 4 0 6 SUPPLY AIR BLOWER PERFORMANCE RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 800 453 0 06 534 0 09 609 0 11 679 0 14 744 0 16 866 0 21 969 0 26 1065 0 33 1000 566 0 13 633 0 16 695 0 19 755 0 21 812 0 24 917 0 30 1016 0 38 1200 680 0 23 735 0 26 789 0 29 840 0 33 ...

Страница 25: ...0 1 2 Standard Factory Drive Hi Static Drive Factory Drive 0 75HP Low Static Drive3 1 4 Hi Static Drive 1 0HP 1 2 SUPPLY AIR BLOWER PERFORMANCE RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Hi Static Drive 1 5HP 1600 511 0 25 562 0 30 612 0 34 658 0 38 703 0 43 786 0 50 863 0 59 935 0 68 1002 0 78 1066 0 86 1800 575 0 36 620 0 41 666 0 45 708 0 50 749 0 55 826 0 6...

Страница 26: ...BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Factory Drive 3 HP Optional Oversized Motor 5 HP 6400 691 1 98 747 2 24 800 2 52 850 2 80 898 3 08 945 3 36 990 3 66 1033 3 96 1075 4 26 SUPPLY AIR BLOWER PERFORMANCE SUPPLY CFM AVAILABLE EXTERNAL STATIC PRESSURE Inches W C 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM...

Страница 27: ...6 68 2 0 3 0 1VP34X5 8 7 2 AK74H AX49 DSH048C 470 694 1 5 145 88 5 2 0 3 0 1VP34X7 8 7 7 AK79H AX54 DSH060C 525 775 1 5 145 88 5 2 0 3 0 1VP34X7 8 6 9 AK71H AX52 DSH096B 515 686 3 184 88 5 2 8 3 8 1VP44X1 1 8 10 2 AK104H AX54 DSH120B 640 854 3 184 88 5 2 8 3 8 1VP44X1 1 8 8 2 AK84H AX57 Frame Eff Pitch Dia Browning Pitch Dia Browning Size in Part No in Part No DSH024C 614 906 0 5 56 62 2 0 3 0 1VP...

Страница 28: ...speed is accomplished as follows 1 Loosen belt tension by moving motor towards the blower shaft via the adjustable mounting 2 Loosen the set screw in the adjustable motor pulley flange Remove external key on pulleys 4 in diameter and larger 3 Slower speed will increase when moveable flange is adjusted towards the fixed flange closed Blower speed will decrease when the moveable flange is adjusted a...

Страница 29: ...t located on the liquid refrigerant line leaving the condenser The pressure controller complete with terminal connection blocks for wiring is attached to a field installed mounting bracket Appropriate mounting hardware for the pressure control module and the damper actuator motor are provided with the kit A routing hole is provided in the condenser corner panel near the actuator mounting location ...

Страница 30: ...itch any two wires at contactor if blower rotation is not correct There is no negative impact on durability caused by operating three phase Scroll compressors in the reversed direction for a short period of time under one hour However after several minutes of operation the compressors internal protector will trip If opposite rotation is needed disconnect and reverse any two leads of the three phas...

Страница 31: ...cessor control will energize the blower motor Once the room t stat has been satisfied it will de energize Y1 If the compressor has satisfied its minimum run time the compressor and fan de energize Otherwise the unit operates the cooling system until the minimum run time for the compressor has been completed After the compressor de energizes the blower is stopped following the elapse of the fan off...

Страница 32: ...densate Overflow lock out SAFETY CONTROLS The microprocessor control monitors the following inputs 1 A High Pressure Switch on each compressor circuit to protect against excessive discharge pressures 2 A Low Pressure Switch on each compressor circuit to protect against loss of refrigerant charge 3 A Condensate Overflow Switch to protect against condensate overflow Compressor Protection In addition...

Страница 33: ... the button once and it scans the bus then assigns itself the first available address starts at 2 It then flashes that address one time Pressing the button twice causes the control to flash the address FLASH CODES Description On Steady This is Control Failure 2 Flashes Control waiting ASCD Anti Short Cycle Delay 3 Flashes High Pressure Compressor 1 Lockout 4 Flashes High Pressure Compressor 2 Lock...

Страница 34: ... type and do not require lubrication Check bearings for any signs of wear movement between inner and outer races Ensure bearing locking collars are secure to the shaft and that collar locking screw is properly set Check that the blower wheel is tight on the shaft and that the hub set screws are tightened to the proper torque DRIVE BELTS Examine belts periodically for wear Glazed areas on the drive...

Страница 35: ...t least 700 psig high side and 180 psig low side with 550 psig retard All hoses must have a service pressure rating of 800 psig Leak detectors must be designed to detect HFC refrigerants Systems must be charged with refrigerant Use a commercial type metering device in the manifold hose R 410A can only be used with POE type oils POE type oils rapidly absorb moisture from the atmosphere Vacuum pumps...

Страница 36: ... USA 17406 8469 800 861 1001 Subject to change without notice Printed in USA Copyright by Johnson Controls 2018 www johnsoncontrols com ALL RIGHTS RESERVED Form 145 32 IOM4 818 Issue Date August 30 2018 Supersedes 145 32 IOM4 1216 ...

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