Johnson Controls DSH Series Installation, Operation & Maintenance Instructions Manual
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Johnson Controls DSH Series Installation, Operation & Maintenance Instructions Manual

Johnson Controls DSH Series Installation, Operation & Maintenance Instructions Manual

Air-cooled self-contained units horizontal r-410a style b/c
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AIR-COOLED SELF-CONTAINED UNITS
Supersedes: 145.32-IOM4 (1216)
Form 145.32-IOM4 (818)
INSTALLATION, OPERATION, MAINTENANCE
MODEL DSH024C–060C AND 096B–120B
HORIZONTAL R-410A
STYLE B/C
Issue Date:
August 30, 2018

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  • Page 1 AIR-COOLED SELF-CONTAINED UNITS Supersedes: 145.32-IOM4 (1216) Form 145.32-IOM4 (818) INSTALLATION, OPERATION, MAINTENANCE MODEL DSH024C–060C AND 096B–120B HORIZONTAL R-410A STYLE B/C Issue Date: August 30, 2018...

  • Page 2: Safety Symbols

    FORM 145.32-IOM4 (818) IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDLINES This equipment is a relatively complicated apparatus. which it is situated, as well as sever personal injury or During installation, operation, maintenance or service, death to themselves and people at the site. individuals may be exposed to certain components or conditions including, but not limited to: refrigerants, oils, This document is intended for use by owner-authorized...

  • Page 3: Table Of Contents

    FORM 145.32-IOM4 (818) CHANGEABILITY OF THIS DOCUMENT In complying with Johnson Controls policy for continu- It is the responsibility of operating/service personnel as ous product improvement, the information contained in to the applicability of these documents to the equipment this document is subject to change without notice. While in question.
  • Page 4 FORM 145.32-IOM4 (818)
  • Page 5 FORM 145.32-IOM4 (818) DSH024C-DSH060C – SINGLE COMPRESSOR UNIT – TYPICAL INSTALLATION DIAGRAM...
  • Page 6 FORM 145.32-IOM4 (818) DSH096B/120B – DUAL COMPRESSOR UNIT – TYPICAL INSTALLATION DIAGRAM...
  • Page 7 FORM 145.32-IOM4 (818) NOMENCLATURE TABLE...

  • Page 8: General Information

    FORM 145.32-IOM4 (818) GENERAL INFORMATION RECORD ANY UNIT DAMAGE ON THE BILL OF LADING AND REPORT TO CARRIER AND FACTORY IMMEDIATELY. Models 2 to 8 tons can be ordered as packaged, SHIPPING AND HANDLING DAMAGES factory-charged unitized packages or as factory split. ARE NOT WARRANTY ITEMS.

  • Page 9: Cabinet Configurations/Unit Mounting

    FORM 145.32-IOM4 (818) CABINET CONFIGURATION OPTIONS if unit is installed as a package or split system (refer to typical installation diagram on Page 4-5). Use of Horizontal unit consists of an evaporator and condenser minimum ½ dia. hanger rods strongly module.
  • Page 10 FORM 145.32-IOM4 (818) condenser electrical panel, and pull the excess 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.
  • Page 11 FORM 145.32-IOM4 (818) 1) R-410A refrigerant oil is applied to entire female and male bodies during any portion of diaphragm surface, o-ring, and threaded male the wrench installation do not rotate. coupling end. 4) Make note of the location of the female nut to 2) Coupling halves must be held in proper the bulkhead.
  • Page 12 FORM 145.32-IOM4 (818) DSH024C & DSH036C DIMENSIONAL DATA 2-3 TON HORIZONTAL A/ C UNI T DI MENSI ONAL DATA 4.75 7.00 17.50 26.00 1.00 FRONT EVAPORATOR CONDENSER FAN ACCESS FAN ACCESS CONDENSER OPENINGS EVAPORATOR SECTION CONDENSER SECTI ON ELECTRICAL BOX ACCESS ELECTRI CAL BOX ACCESS LOW VOLTAGE CONNECTION ELECTRICAL POWER CONNECTION...
  • Page 13 FORM 145.32-IOM4 (818) DSH048C & DSH060C DIMENSIONAL DATA 4-5 TON HORI ZONTAL A/ C UNIT DI MENSIONAL DATA 4.75 10.12 17.50 28.00 1.00 FRONT EVAPORATOR CONDENSER FAN ACCESS FAN ACCESS CONDENSER OPENI NGS EVAPORATOR SECTI ON CONDENSER SECTION ELECTRI CAL BOX ACCESS ELECTRI CAL BOX ACCESS LOW VOLTAGE CONNECTI ON ELECTRI CAL POWER CONNECTION...
  • Page 14 FORM 145.32-IOM4 (818) DSH096B DIMENSIONAL DATA 8 TON HORIZONTAL A/C UNIT DIMENSIONAL DATA 112.00 1.25 80.00 1.00 25.00 17.00 4.75 CONDENSER SECTION EVAPORATOR SECTION ELECTRICAL BOX ACCESS ELECTRICAL BOX ACCESS CONDENSER COMPRESSOR EVAPORATOR CONDENSER OPENING BLOWER DRIVE ACCESS PANEL BLOWER DRIVE ACCESS PANEL ACCESS PANEL FRONT VIEW...
  • Page 15 FORM 145.32-IOM4 (818) DSH120B DIMENSIONAL DATA 10 TON HORIZONTAL A/C UNIT DIMENSIONAL DATA 60.88 70.88 84.00 POWER 4.70 1.25 48.20 CONNECTION CONDENSER SECTION EVAPORATOR SECTION ELECTRICAL BOX ACCESS ELECTRICAL BOX ACCESS EVAPORATOR COMPRESSOR SERVICE CONDENSER 11.31 BLOWER DRIVE CONDENSER DISCHARGE BLOWER DRIVE ACCESS PANEL HOSE ACCESS...
  • Page 16 FORM 145.32-IOM4 (818) TYPICAL SERVICE CLEARANCES 2-5 TON HORIZONTAL A/C UNIT SERVICE CLEARANCES FRONT EVAPORATOR CONDENSER FAN ACCESS FAN ACCESS 4 IN. MINIMUM CLEARANCE (FOR DRAIN TRAP) 36 IN. MINIMUM CLEARANCE RETURN CONDENSER INTAKE CONDENSER EVAPORATOR SECTION SECTION CONDENSER DISCHARGE SUPPLY 36 IN.
  • Page 17 FORM 145.32-IOM4 (818) 8 & 10 TON HORIZONTAL A/C UNIT SERVICE CLEARANCES (8 TON PACKAGED UNIT SHOWN) 8 TON HORIZONTAL A/C UNIT SERVICE CLEARANCES BACK VIEW 4 IN. MINIMUM CLEARANCE (FOR DRAIN TRAP) CONDENSER INTAKE 36 IN. MINIMUM CLEARANCE EVAPORATOR CONDENSER SECTION SECTION...
  • Page 18 FORM 145.32-IOM4 (818) UNIT CORNER WEIGHTS...

  • Page 19: Interconnecting Refrigerant Tubing

    FORM 145.32-IOM4 (818) INTERCONNECTING REFRIGERANT TUBING After the evaporator and condenser sections have RECOMMENDED REFRIGERANT LINE SIZES been mounted, the interconnecting refrigerant tubing LESS THAN 75 LINEAR FEET can be fabricated. For cooling systems where the indoor and outdoor sections are installed at the same Model # LIQUID LINE SUCTION LINE...

  • Page 20: Electrical Wiring

    FORM 145.32-IOM4 (818) The use of louvers with higher velocities than above section electrical cover is installed with wiring diagrams employed, discretion on the inner access door, which must be opened to engineer/installer, provided that the total air pressure read the diagrams drop does not exceed the capability of the condenser fan and motor.

  • Page 21: Typical Wiring Schematics

    FORM 145.32-IOM4 (818) TYPICAL WIRING SCHEMATICS...
  • Page 22 FORM 145.32-IOM4 (818)
  • Page 23 FORM 145.32-IOM4 (818) ELECTRICAL DATA - STANDARD EVAPORATOR MOTOR EVAP MAX FUSE / COMPRESSOR COND FAN MODEL # VOLTAGE CCT. BKR. DSH024C2 208-230/3/60 55.4 0.50 0.50 12.83 DSH036C2 208-230/3/60 10.4 73.0 0.75 0.75 17.20 DSH036C4 460/3/60 38.0 0.75 0.75 9.25 DSH036C5 575/3/60 36.5...

  • Page 24: Fan Performance Data

    FORM 145.32-IOM4 (818) FAN PERFORMANCE DSH024C SUPPLY AIR BLOWER PERFORMANCE AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C. ¹ SUPPLY RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Low Static Factory Drive +0.5HP Hi-Static Drive +0.5HP Drive 318 0.03 426 0.04 520 0.06 604 0.08 679 0.10 810 0.14 923 0.19...
  • Page 25 FORM 145.32-IOM4 (818) DSH048C SUPPLY AIR BLOWER PERFORMANCE AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C. ¹ SUPPLY RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Factory Drive + 0.75HP Hi-Static Drive + 1.0HP Low Static Drive 1200...
  • Page 26 FORM 145.32-IOM4 (818) DSH096B SUPPLY AIR BLOWER PERFORMANCE AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C. ¹ SUPPLY Field Supplied Low Static Standard Factory Drive + 1.5HP Optional Hi-Static Drive + 2.0HP Drive 0.31 0.42 0.53 0.64 0.75 0.87 1.04 1.21 1.40 1038 1.51...
  • Page 27 FORM 145.32-IOM4 (818) MOTOR AND PULLEY DATA EVAPORATOR-STANDARD BLOWER MOTOR AND DRIVE DATA Adjustable Fixed Motor Belts Motor Pulley Blower Pulley Drive Range Model (RPM) Frame Eff. Pitch Dia. Browning Pitch Dia. Browning Rating/Size Size (in) Part No. (in) Part No. DSH024C 416-615 2.0-3.0...
  • Page 28 FORM 145.32-IOM4 (818) BLOWER SPEED ADJUSTMENT The RPM of the supply air and condenser air blowers will depend on the required CFM, and the static resistances of both the supply/discharge and the return/intake duct systems. Units with oversized motors or oversized drive kits are designed to operate in the shaded region of the fan table otherwise nuisance overloads trips can occur.
  • Page 29 FORM 145.32-IOM4 (818) LOW AMBIENT DAMPER INSTALLATION If unit operation is required at outdoor ambient below A routing hole is provided in the condenser corner panel, near the actuator mounting location, to allow 50 F, the optional Low Ambient Damper kit should be installation of the plenum-rated cable between the installed to maintain acceptable condensing pressure.

  • Page 30: Start-Up And Operation

    FORM 145.32-IOM4 (818) START-UP AND OPERATION Start unit and check rotation of fans and compressors. There is no negative impact on durability caused by operating three phase Scroll compressors in the Scroll compressors will only compress in one rotational reversed direction for a short period of time (under one direction.

  • Page 31: Microprocessor Controller

    FORM 145.32-IOM4 (818) MICROPROCESSOR CONTROLLER When the room t-stat calls for cooling, the low-voltage control circuit from “R” to “Y1”and “G” is completed. The The microprocessor control system is specifically compressor and fan motor are energized. After designed for single and dual stage air cooled systems. completing the specified fan on delay for cooling, the The control system interfaces with a conventional type microprocessor control will energize the blower motor.

  • Page 32: Safety Controls

    FORM 145.32-IOM4 (818) Microprocessor Control Unit Flash Codes than 5 seconds, the microprocessor control board will de-energize the compressor, initiate the ASCD, and Various flash codes are utilized by the microprocessor stop the fan. control to aid in troubleshooting. Flash codes are distinguished by the short on and off cycle used If the call for cooling is still present at the conclusion of (approximately 200ms on and 200ms off).
  • Page 33 FORM 145.32-IOM4 (818) Current alarms or active restrictions are flashed on the microprocessor control LED. 1. LAST ERROR – When this button is pressed and released, it flashes the last five (5) flash codes on the board’s LED. The most recent alarm is shown first and the oldest alarm is shown last.

  • Page 34: Maintenance/Service

    FORM 145.32-IOM4 (818) MAINTENANCE / SERVICE shaft, and that collar locking screw is properly set. Check that the blower wheel is tight on the shaft, and DISCONNECT LOCK that the hub set screws are tightened to the proper POWER WHEN SERVICING UNIT. torque.
  • Page 35 FORM 145.32-IOM4 (818) R-410A QUICK REFERENCE GUIDE Refer to Installation Instructions for specific installation requirements. R-410A Refrigerant operates at 50 - 70 percent higher pressures than R-22. Be sure that servicing  equipment and replacement components are designed to operate with R-410A. R-410A Refrigerant cylinders are rose colored.
  • Page 36 100 JCI Way, York, Pennsylvania 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)

This manual is also suitable for:

Dsh024cDsh096bDsh120bDsh036c seriesDsh048c seriesDsh060c series

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