Johnson Controls Z Series Installation And Maintenance Manual
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Johnson Controls Z Series Installation And Maintenance Manual

Inverter-driven air conditioning units
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Installation
and
Maintenance
Manual
"Z" SERIES
INVERTER-DRIVEN
AIR CONDITIONING
UNITS
Type
DHZ09NWB21S
DHZ12NWB21S
DOOR UNIT
DHZ18NWB21S
Type
DHZ09CSB21S
DHZ12CSB21S
DHZ18CSB21S
PLEASE READ AND
UNDERSTAND THIS MANUAL
BEFORE USING THIS
INVERTER-DRIVEN AIR
CONDITIONING UNIT. KEEP
THIS MANUAL FOR FUTURE
REFERENCE.
Model
Model

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  • Page 1 Installation Maintenance Manual "Z" SERIES INVERTER-DRIVEN AIR CONDITIONING UNITS Type Model DHZ09NWB21S DHZ12NWB21S DOOR UNIT DHZ18NWB21S Model Type DHZ09CSB21S DHZ12CSB21S DHZ18CSB21S PLEASE READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS INVERTER-DRIVEN AIR CONDITIONING UNIT. KEEP THIS MANUAL FOR FUTURE REFERENCE.
  • Page 2 Important Notice ● Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without prior notice. ● Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard.

  • Page 3: Table Of Contents

    Table of Contents 1. Introduction and Safety Instructions ..........1 2. Installation ........................1 2.1 Installation Dimension Diagram ..................1 2.2 Main Tools for Installation and Maintenance..............2 2.3 Installation Procedures....................3 2.4 Installation - Checking Parts ..................4 2.5 Selection of Installation Location ..................4 2.6 Electric Connection Requirement ..................4 2.7 Installation of Indoor Unit ....................4 2.8 Installation of Outdoor Unit .....................7 2.9 Vacuum Pump/Leak Detection ..................8...
  • Page 4 Never bypass or jump-out any safety device or switch. ● Johnson Controls, Inc. will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they…...
  • Page 5 Take the following precautions to reduce the risk of property damage. ● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages. ● If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result.
  • Page 6 Controls uses only refrigerants that have been approved for use in the unit’s intended home country or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve. The refrigerant used in this unit is identified on the unit’s faceplate and/or in the associated manuals.
  • Page 7 under pressure and never open pressurized system parts. ● Before installation is complete, make sure that the refrigerant leak test has been performed. If refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor.
  • Page 8 ● Communication cabling shall be a minimum of 18-Gauge, 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines.

  • Page 9: Introduction And Safety Instructions

    2. Installation 2.1 Installation Dimension Diagram Space to the wall At least 5 7/8 inch At least 5 7/8 inch Space to the wall Condensate pipe Installation and Maintenance...

  • Page 10: Main Tools For Installation And Maintenance

    2.2 Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hex wrench 9. Manifold gauge 7. Electronic leakage detector 8.

  • Page 11: Installation Procedures

    2.3 Installation Procedures Start installation Preparation before installation Select installation Read the requirements Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install outdoor unit mount Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Mount outdoor unit...

  • Page 12: Installation - Checking Parts

    2.4 Installation - Checking Parts 2.6 Electric Connection Requirement Name Name 1. Safety Precautions Sealant (1) All electric safety regulations must be followed when Wrapping tape installing the unit. (2) Use proper power supply circuit and air switch in Connection pipe accordance with local safety regulations.
  • Page 13 5. Connect the Pipe of Indoor Unit Secure 3. Install Wall-mounting Frame Wall Wall Mark in the middle of it Level meter Space Space to the to the Open-end wrench wall wall above above Union nut 6 inch 6 inch Pipe Pipe joint Union nut...
  • Page 14 7. Connect Wire of Indoor Unit 8. Bind up Pipe condensate condensate Screw Pane condensate Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Condensate hose Condensate hose Connection pipe connection wire sleeve Band Indoor power cord Note: winding.

  • Page 15: Installation Of Outdoor Unit

    2.8 Installation of Outdoor Unit torque tightening 1. Install Support of Outdoor Unit(Select it according to . m) the actual installation situation) 15~20 30~40 45~55 60~65 expansion screws. 70~75 Note: 5. Connect Outdoor Electric Wire 09K /12K 1/6 in. above the floor in order to install drain joint. (As shown secured screws are needed.

  • Page 16: Vacuum Pump/Leak Detection

    2. Leakage Detection The condensate hose (1) Check for leaks using the leak detector: can't raise (2) With soap water: upwards if a leak detection tool is unavailable, use soap water to detect any leak. Apply soap water to the suspected leak position and observe for 3 minutes, if bubbles appear then there is a leak.

  • Page 17: Maintenance

    3. Maintenance 3.1 Precautions before Maintenance There are high-capacity electrolytic capacitors on the outdoor mainboard. Thus, even if the power is cut off, there is high voltage inside the capacitors and it needs more than 20 min. to reduce the voltage to safety value. Touching the electrolytic capacitor within 20 min. after cutting the power will cause electric shock.

  • Page 18: Error Code List

    3.2 Error Code List Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 19 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 20 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 21 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 22 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 23 Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s Display...
  • Page 24 Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Malfunction Dual-8 A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...

  • Page 25: Procedures Of Troubleshooting

    3.3 Procedures of Troubleshooting Indoor unit 1. Malfunction of Temperature Sensor F1, F2 Main detection points: Start eliminated eliminated eliminated Installation and Maintenance...
  • Page 26 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly. Turn unit on to check whether the malfunction is eliminated.
  • Page 27 3. Malfunction of Protection of Jumper Cap C5 Main detection points: Start eliminated eliminated eliminated Installation and Maintenance...
  • Page 28 4. Malfunction of Overcurrent Protection E5 Main detection points: Start eliminated eliminated eliminated eliminated model eliminated eliminated opened completely) eliminated Installation and Maintenance...
  • Page 29 5. Communication Malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
  • Page 30 Outdoor Unit 09K/12K 1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: Turn on the unit and wait 1 minute Use AC voltmeter to measure the voltage on the two ends of electrolytic capacitor (see fig 30) Malfunction of...
  • Page 31 2. IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: ‰ ‰ ‰ ‰ ‰ ‰ H5, H7 or P5 is displayed after turning on the unit Measure if the voltage The unit starts Repair power supply to make input is within 180~265V...
  • Page 32 3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: E8 is displayed Normal protection, please If the outdoor Unit restarts use it after improving the ambient temperature is higher normally outdoor ambient temperature than 53℃? Improve the radiating environment If the radiating of indoor...
  • Page 33 4. Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ‰ ‰ ‰ Turn on the unit The stop time is not sufficient and If the stop time of compressor the high and low pressure of system is more than 3min? is not balanced , please start the unit after 3min...
  • Page 34 5. Overload and high discharge temperature malfunction Main detection points: Installation and Maintenance...
  • Page 35 H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
  • Page 36 6. PFC (correction for power factor) malfunction (outdoor unit malfunction) Main detection points: start If power plug is connected Is the malfunction Connect the plug correctly well with the socket eliminated? Check the connection wire between reactor mainboard and situation of connection Reconnect the wire or Power on and If there is short circuit or the...
  • Page 37 7. Communication malfunction (E6) Main detection points: ‰ If the unit operates normally before malfunction Check the connection wire according to the wiring diagram. Check built-in wiring If the connection wire of indoor and outdoor is connected well? unit Reconnect the wire or Replace the If the wiring is replace the connection...
  • Page 38 1. Key detection point Test9 Test3 Test4 Test2 Test1 Test5 Test8 Tset7 Test6 Test10 Test11 Test12 Test NO Test point Corresponding component condition Test 1 Between A and C 160V~265V Test 2 Between B and C 160V~265V Test 3 Between D and E DC 180V~380V Test 4 Electrolytic capacitor of power...
  • Page 39 2. Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor Fault with the voltage Replace the control testing circuit on...
  • Page 40 3. IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: Installation and Maintenance...
  • Page 41 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
  • Page 42 4. Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: Anti-high temperature, overload protection Normal protection, please use If the outdoor ambient temperature is it after improve the outdoor higher than 53 ºC? ambient temperature After the unit de- energized for 20min...
  • Page 43 5. Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: Energize the unit and start it If the stop time is not enough and the If the stop time of compressor high and low pressure of system is not is more than 3min? balance , please start it after 3min Improve the connection situation...
  • Page 44 6. Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: Synchronism Synchronism after energize the unit occurred during and start it operation Check if the fan Replace fan If the stop time of If the outdoor fan works terminal OFAN is capacitor C1 compressor is more than...
  • Page 45 7. Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: After the unit de-energized for 20min If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmic Connect wire If the wiring terminal FA of electron well with wiring...
  • Page 46 8. PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Start Check the connection wire of reactor (L) of outdoor unit and PFC capacity Replace connection If there is damaged If the malfunction is wire with circuit short circuit...
  • Page 47 9. Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: Start If the unit is operation normal before malfunction Check connection wire of indoor and outdoor unit with circuit diagram Check built- in wiring of Connection indoor and correct? outdoor unit...
  • Page 48 10. Diagnosis process for outdoor communication circuit Start Test voltage value with Test 10 position in diagram with voltage meter Number jumping Test voltage value with Test 13 position in diagram with voltage meter Number jumping Outdoor unit Test voltage malfunction value with Test 11 position in...

  • Page 49: Troubleshooting For Normal Malfunction

    3.4 Troubleshooting for Normal Malfunction 1. Air Conditioner Doesn't Start connected well. Wrong wire connection between or poor connection for wiring terminals reliably correctly once improper Replace batteries for remote controller Repair or replace remote controller 2. Poor Cooling (Heating) for Air Conditioner Small wind blow motor is set too low conditioner...
  • Page 50 4. ODU Fan Motor Can't Operate Connect wires according to wiring diagram to connection diagram damaged fan capacitor. is bad and ODU compressor generates a lot of 5. Compressor Doesn't Operate Connect wires according to wiring diagram to connection diagram Capacity of compressor is damaged fan capacitor.

  • Page 51: Appendix

    Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display display display Fahrenheit Fahrenheit Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature （℉） temperature （℉） temperature （℉）...

  • Page 52: Appendix 3: Pipe Expanding Method

    Appendix 3: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please Pipe cutter expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 53: Appendix 4: List Of Resistance For Temperature Sensor

    Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6...
  • Page 54 Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9...
  • Page 55 Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204 620.8 77.35...
  • Page 57 Product improvement, specifications and appearance in this manual are subject to change without prior notice. LIT - 12012158 © Johnson Controls, Inc. USA...

This manual is also suitable for:

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