Johnson Controls MAHP18B21S Installation And Maintenance Manual
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Johnson Controls MAHP18B21S Installation And Maintenance Manual

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Installation and
Maintenance
Manual
Air Handler
with DX-Kit
Air Handler
Standard PSC
Single Piece, Multi-Position
Compatibility
DX-Kit and Air Handler
Combined Model
(H, Y) MAHP18B21S
(H, Y) MAHP24B21S
(H, Y) MAHP30B21S
(H, Y) MAHP36B21S
(H, Y) MAHP36C21S
(H, Y) MAHP48C21S
(H, Y) MAHP48D21S
(H, Y) MAHP60C21S
(H, Y) MAHP60D21S
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS DX-KIT.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
(Ins)DX-Kit̲4e-rev1.indd   C-1
(Ins)DX-Kit̲4e-rev1.indd   C-1
DX-Kit
Air Handler
Model
EXV-018E
AP18BX21
EXV-024E
AP24BX21
EXV-030E
AP30BX21
EXV-036E
AP36BX21
EXV-036E
AP36CX21
EXV-048E
AP48CX21
EXV-048E
AP48DX21
EXV-060E
AP60CX21
EXV-060E
AP60DX21
PMGB0406B
2016/11/25   15:32:00
2016/11/25   15:32:00

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Summary of Contents for Johnson Controls MAHP18B21S

  • Page 1 Air Handler with DX-Kit Air Handler Standard PSC Single Piece, Multi-Position Compatibility DX-Kit and Air Handler DX-Kit Air Handler Combined Model Model (H, Y) MAHP18B21S EXV-018E AP18BX21 (H, Y) MAHP24B21S EXV-024E AP24BX21 (H, Y) MAHP30B21S EXV-030E AP30BX21 (H, Y) MAHP36B21S EXV-036E...
  • Page 2 PMGB0406B rev.1 (Ins)DX-Kit̲4e-rev1.indd   C-2 (Ins)DX-Kit̲4e-rev1.indd   C-2 2016/11/25   15:32:11 2016/11/25   15:32:11...

  • Page 3: Table Of Contents

    Table of Contents Air Handler ..............................5 Introduction .............................. 5 2. Safety ..............................6 3. Unit Installation ............................9 4. Duct Work and Connections ........................13 5. Electronic Expansion Valve ........................15 6. Refrigerant Line Connection ........................16 7. Condensate Drain Connections ......................18 8.
  • Page 4 List of Figures Figure 1. Return Air Duct Attachment and Component Location ................ 7 Figure 2. Pressure Check........................... .8 Figure 3. Dimensions and Duct Connection Dimensions ..................8 Figure 4. Typical Installation ..........................11 Figure 5. Coil Blow Off Wing Installation ......................12 Figure 6.

  • Page 5: Air Handler

    Air Handler 1. Introduction This manual is for this Air Handler and the DX Kit. Read this "Installation and Maintenance Manual" carefully before installing this product. Read through the applicable product documentation for other units in the system as well. Provide this manual and the warranty to all installers and users.

  • Page 6: Safety

    This system should be installed by personnel certi ed by Johnson Controls, Inc. Personnel must be quali ed according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, re or explosion. In areas where Seismic ‘’Performance...

  • Page 7: Figure 1. Return Air Duct Attachment And Component Location

    DO NOT lift air handler by the cabinet braces. The cabinet braces are held in place by the coil channels. The cabinet braces could become disengaged from the cabinet causing the air handler to fall, potentially causing injury or damaging property. See Figure 1 for location of cabinet braces. Lift the air handler by tightly gripping the casing.

  • Page 8: Figure 2. Pressure Check

    Inspection As soon as you receive the Air Handler, check to be sure it is still under pressure per Figure 2. Inspect the coil for possible damage during transit. If damage is evident, note the extent of the damage on the carrier’s freight bill.

  • Page 9: Unit Installation

    Table 1. Dimensions Models Refrigerant Dimensions Wiring Knockouts Connections Line Size Height Width Power Control Liquid Vapor (Conduit) (Conduit) 17-1/2 12-7/8 14-1/4 16-1/2 17-1/2 12-7/8 14-1/4 16-1/2 47-1/2 17-1/2 19-1/2 14-1/4 16-1/2 7/8 (1/2) 7/8 (1/2) 47-1/2 17-1/2 19-1/2 14-1/4 16-1/2 1-3/8 (1) 1-23/32...
  • Page 10 Air Handler Voltage Normal Operating* Voltage Range 208V/230V-1-60 188V-253V Rated in accordance with ARI Standard 110, utilization range "A." Clearances You must take clearances into consideration, and provide for them as follows: Refrigerant piping and connections - minimum 12” recommended for clearances to braze and service the joint.

  • Page 11: Figure 4. Typical Installation

    Air Handler Con guration These air handler units are supplied ready to be installed in an up ow or horizontal left position. Refer to Figure 4. If the unit requires either down ow or horizontal right air ow con gurations, the unit must have the coil assembly repositioned.

  • Page 12: Figure 5. Coil Blow Off Wing Installation

    Note the numbered position of the coil slide rail located at the upper right hand side of the indoor coil com- partment. Remove slide rail from air handler cabinet by removing front screw and lowering bracket down to disengage hook on back of slide rail. 5.

  • Page 13: Duct Work And Connections

    4. Duct Work and Connections For air supply and return, use up ow, horizontal, or down ow, as applicable to the installation. The vast majority of problems encountered with heating and cooling systems are linked to improperly designed or installed duct systems. The success of an installation highly depends upon the proper design and installation of the duct system.

  • Page 14: Figure 6. Horizontal Suspension

    Dimension in Inches Air Handler Cabinet Size 17-1/2 Width-Short H 17-1/2 Width-Short H 47-1/2 21 Width –Short H 21-1/2 51-1/2 21 Width –Short H 21-1/2 55-3/4 24-1/2 Width 21-1/2 55-1/2 Figure 6. Horizontal Suspension Duct Flanges Three duct anges are provided to assist in positioning and attaching duct work to the air handler. These anges are included in the unit parts bag.

  • Page 15: Electronic Expansion Valve

    RECOMMENDED SUGGESTED LOCATION TRANSITION OF BLOCK OFF PLATE A0332-001 Figure 8 Duct Work Transition Unit Connections There are several ways to handle the supply and return air duct connections. The location and sizing of the connections depends on the situation and the method best suited to the installation. Up ow, horizontal or down ow applications may be used.

  • Page 16: Refrigerant Line Connection

    6. Refrigerant Line Connection Coil is under inert gas pressure. Relieve pressure from coil by depressing Schrader core at the end of the suction-manifold stub out. Always supply dry nitrogen through the tubing while it is being brazed. Unless an inert atmosphere is provided, the temperature required is high enough to cause oxidation of the copper.
  • Page 17 Step 5. Attach the brass nut to the accessory piping Step 6. Attach the Te on ring to seal the two connec- tions together . Do not re-install the piston. Step 7. Attach the accessory piping to the distributor body. Tighten the nut with a torque of 16-20 ft-lbs. Then, manually raise the distributor body to align with the liquid line connection hole.

  • Page 18: Condensate Drain Connections

    7. Condensate Drain Connections Trap all drain lines a minimum of three inches, pitch them away from unit drain pan, and ensure they are not smaller than the coil drain connection. DO NOT use Te on™ tape, pipe thread compound, or other sealants. The use of a sealant may cause damage and premature failure of the drain pan.

  • Page 19: Line Power Connections

    9. Line Power Connections Power may be brought into the unit through the supply air end of the unit (top left when unit is in the up ow vertical position) or the left side panel. Use the hole appropriate to the unit’s orientation in each installation to bring conduit from the disconnect.

  • Page 20: Blower Speed Connections

    10. Blower Speed Connections Adjust blower motor speed to provide air ow within the minimum and maximum limits approved for indoor coil, electric heat and outdoor unit. Speed tap adjustments are made by the optional controller. Air ow data is shown in Unit Data, (Section 11), Table 11.

  • Page 21: Table 3. Electrical Data - Cooling Only

    Table 3. Electrical Data - Cooling Only Models Motor FLA Minimum Circuit Ampacity 48C/48D 60C/60D FLA = Full Load Amps. MOP = Maximum Overcurrent Protection device; must be HACR type service disconnect or time delay fuse. Refer to local codes to determine the correct wire size. Table 4.

  • Page 22: Table 6. Electric Heat Performance Data: 208/230-1-60 & 208/230-3-60

    Table 6. Electric Heat Performance Data: 208/230-1-60 & 208/230-3-60 Total Heat kW Staging 1,2,3 Nominal Heater Models kW@240V W1 Only W1 + W2 208V 230V 208V 230V 208V 230V 208V 230V 6HK(0,1)6500206 6HK(0,1)6500506 12.3 6HK(0,1)6500806 19.7 24.1 6HK(0,1)6501006 24.6 30.1 6HK(1,2)6501306 12.5 11.5...

  • Page 23: Table 7. Electrical Data For Single Source Power Supply: 208/230-1-60

    Table 7. Electrical Data For Single Source Power Supply: 208/230-1-60 Field Wiring Min. Circuit Air Handler Heater Models Heater Amps Ampacity Models @240V 208V 230V 208V 230V 6HK(0,1)6500206 12.2 13.3 6HK(0,1)6500506 23.0 25.3 6HK(0,1)6500206 12.6 13.7 6HK(0,1)6500506 23.4 25.7 6HK(0,1)6500206 13.7 14.8 6HK(0,1)6500506...

  • Page 24: 6Hk(1,2)6502506

    Field Wiring Min. Circuit Air Handler Heater Models Heater Amps Ampacity Models @240V 208V 230V 208V 230V 6HK(0,1)6500206 14.4 15.6 6HK(0,1)6500506 25.3 27.5 6HK(0,1)6500806 38.5 42.2 6HK(0,1)6501006 46.9 51.5 6HK(1,2)6501306 60.1 66.1 6HK(1,2)6501506 68.5 75.4 6HK(1,2)6501806 81.8 90.0 6HK(1,2)6502006 90.2 99.3 6HK(0,1)6500206 14.4...

  • Page 25: Table 8. Electrical Data For Multi-Source Power Supply: 208/230-1-60

    Table 8. Electrical Data For Multi-source Power Supply: 208/230-1-60 MOP * Min. Circuit Ampacity Air Handler Heater Total 208V 230V 208V 230V Models Models Heater Amp@ Circuit Circuit 240V 1st * 2nd 3rd 1st * 2nd 3rd 1st * 2nd 3rd 1st * 2nd 3rd 6HK16501306 21.7 37.6 –...

  • Page 26: Table 9. Electrical Data For Single Source Power Supply: 208/230-1-60

    Table 9. Electrical Data for Single Source Power Supply: 208/230-1-60 Field Wiring Heater Air Handler Heater Models Amps Min. Circuit Ampacity Models @240V 208V 230V 208V 230V 6HK36501025 23.1 27.9 30.5 6HK36501525 34.6 40.4 44.3 6HK36501025 23.1 28.3 30.9 6HK36501525 34.6 40.8 44.7...

  • Page 27: Table 10. Electrical Data For Multi-Source Power Supply: 208/230-3-60

    Table 10. Electrical Data For Multi-source Power Supply: 208/230-3-60 Min. Circuit Ampacity Total Heater Models Handler Heater 208V 230V 208V 230V Models Amp@ 240V Circuit Circuit 1st 2 1st 2 1st 2 1st 2 6HK46502025 46.2 28.3 25.0 30.9 27.6 6HK46502025 46.2 28.6...

  • Page 28: Table 11. Air Flow Data (Cfm1)

    Table 11. Air Flow Data (CFM Wired Controller External Static Pressure (in. wc.) Models Indication 0.10 0.20 0.30 0.40 0.50 0.60 0.70 (Blower Speed) 208 Volts High (High) Low (Medium) High (High) Low (Medium) High (High) 1228 1192 1134 1078 1023 Low (Medium) 1023...

  • Page 29: Maintenance

    12. Maintenance Filters must be cleaned or replaced when they become dirty. Inspect at least once per month. The frequency of cleaning depends upon the hours of operation and the local atmospheric conditions. Clean lters keep unit ef ciency high. Coil Cleaning If the coil needs to be cleaned, use water to clean.

  • Page 30: Installation Veri Cation

    14. Installation Veri cation Prior to and during the accomplishment of the installation procedures, verify all tasks are accomplished as indicated in these instructions. WERE THE PRIMARY AND SECONDARY DRAINS TRAPPED CORRECTLY? PLUG (UNUSED SECONDARY DRAIN) SECONDARY 3” MINIMUM PRIMARY PREMADE TRAPS HANDMADE TRAP A0272-001...

  • Page 31: Dx Kit

    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 32: Introduction

    Refer back to these safety instructions as needed. This system should be installed by personnel certi ed by Johnson Controls, Inc. Personnel must be quali ed according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, re or explosion.
  • Page 33 This unit is the pressurized system. Never loosen threaded joints while the system is under pressure and never open pressurized system parts. Johnson Controls will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modi cations to Johnson Controls products are prohibited as they…...
  • Page 34 Installation Precautions To reduce the risk of serious injury or death, the following installation precautions must be followed. When installing the unit into… A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.
  • Page 35 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 identi ed on the unit’s faceplate and/or in the associated manuals.
  • Page 36 Electrical Precautions Take the following precautions to reduce the risk of electric shock, re or explosion resulting in serious injury or death. Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause serious injury or death.
  • Page 37 Electrical Installation In some cases, the packaged air conditioner may not be operated normally under the following cases: When electrical power for the packaged air conditioner is supplied from the same power transformer as the device*. When the power supply wiring for the device* and the packaged air conditioner are located close to each other: Device*: (Example): Lift, container crane, recti er for electric railway, inverter power device, arc furnace, electric furnace, large-sized induction motor, and large-sized switch.

  • Page 38: Before Installation

    17. Before Installation 17.1 About DX-Kit DX-Kit is an interface kit designed to control the air handlers using a fan motor control and expansion valve control depending on the air inlet or outlet temperatures. The combination capacity of indoor unit against the outdoor unit is selected depending on the outdoor unit minimum and maximum capacity ratio.
  • Page 39 17.2 Applicable Model This DX-Kit is compatible with the following air handler models. DX-Kit Model Air Handler Model EXV-018E AP18BX21 EXV-024E AP24BX21 EXV-030E AP30BX21 EXV-036E AP36BX21, AP36CX21 EXV-048E AP48DX21, AP48CX21 EXV-060E AP60DX21, AP60CX21 Ensure the installation distance between this DX-Kit and the air handler is the shortest possible. For the piping length, keep a maximum distance of 16.4ft (5 m) between the air handler and the expansion valve box.
  • Page 40 17.4 Factory-Supplied Accessories Check to ensure that the following accessories are packed with this product. Accessory Qty. Purpose Control Box System Control Box Expansion Valve Box Expansion Valve for Refrigerant Cycle Control Temperature Sensing: Thermistor Air Inlet (Blue), Air Outlet (Red), Gas Pipe (Yellow), Liquid Pipe (Black) To Extend Thermistor Length: Thermistor Extension...
  • Page 41 17.5 Field-Supplied Items Item Purpose For connection between TB2 terminal no. 1 to 5 in the control box and TB3 Expansion Valve Cable terminal no.1 to 5 in the expansion valve box. AWG20 recommended. Wired Controller To control the air handler. (CIW01) Wired Controller Cable For connection to wired controller.

  • Page 42: Installation Location

    18. Installation Location (1) Allow proper clearance for operation and maintenance to install this product Unit: inch (mm) 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 1- 15 15 15 15 15 15 15 15 15 15 15 15 15 15 / / / / / / / / / / / / 1- 1- 1- 1- 1- 1- 1-...

  • Page 43: Installation Work

    19. Installation Work 19.1 Preparation (1) Determine the nal location and installation orientation of this product with respect to the space allowed for piping, wiring, and maintenance access. See also Section 19.2. DO NOT mount the box with the pipe connections on top of the Air Handler. (2) Refer to the Installation dimensions shown in the following gure.

  • Page 44: Figure 17. Mounting The Control Box

    19.2 Mounting Control Box Mount the Control Box on top of the Air Handler. Be sure to mount the control box in the correct position indicated below or else it will come into contact with the wiring holes of the air handler. Incorrect positioning will damage the wiring and affect the conduit connection.

  • Page 45: Figure 18. Mounting Valve Box

    19.3 Mounting Expansion Valve Box Mount the expansion valve box as shown in the following gure. (2.5) (2.5) 16 16 (5.5) (5.5) Figure 18. Mounting Valve Box Figure 19. Details of Mounting Hole Details of Mounting Holes NOTE • In case of installation positions “c” and “d”, make sure to insulate the copper pipes inlet on the expansion valve box cover to avoid any liquid ltration and accumulation.

  • Page 46: Refrigerant Piping Work

    20. Refrigerant Piping Work Use the speci ed non- ammable refrigerant (R410A) to the outdoor unit in the refrigerant cycle. Do not charge the unit with materials other than R410A, such as hydrocarbon refrigerants (propane and isobutan), oxygen, ammable gases (acetylene, ammonia, etc.) or poisonous gases when installing, maintaining and moving the unit.

  • Page 47: Figure 20. Piping Connections

    20.2 Piping Connection Work (1) Example of piping connections is shown below. Make sure to attach the reducer (accessory) to the gas pipe connection of the air handler. Check the reducer size for the corresponding air handler in Table 12. Indoor Unit Indoor Unit Indoor Unit...

  • Page 48: Figure 22. Applying Refrigerant Oil

    Apply Refrigerant Oil. Do not apply the refrigerant oil to the outside of the ared opening. Required Tightening Torque (JIS B 8607) Pipe Size Tightening Torque 3/8 inch (9.52 mm) 25.1-31.0 ft.lbs (34-42 N.m) Figure 22. Applying Refrigerant Oil (6) Wherever buried piping exists on site, make sure there is adequate access to inspect piping sockets and elbows, and for interconnecting parts.

  • Page 49: Electrical Wiring

    21. Electrical Wiring All electrical work must be done as outlined in this manual and in accordance with this manual. Substandard work can result in re and damage to the unit. Use speci ed cables between this product and units, and choose the cables correctly. If not, an electrical shock or re may occur.
  • Page 50 Secure all cables together with cable clamps and seal the connecting hole against the onslaught of moisture and insects. Run the electrical wiring through the connecting hole in the side cover when using conduit. 21.1 General Check (1) Make sure that the eld-selected electrical components: (main power switches, circuit breakers, wires, conduit connectors, and wire terminals) have been properly labeled in accordance with electrical data as speci ed in the Engineering Manual.

  • Page 51: Figure 25. Electrical Wiring Connections: Heat Pump And Heat Recovery Systems

    Heat Pump System Outdoor Unit Outdoor Unit Power Supply GFCI Main Switch Indoor Unit Indoor Unit Indoor Unit with DX-Kit with DX-Kit with DX-Kit Indoor Unit Power Supply GFCI Main Switchbox Switch Refer to the “Installation and Maintenance Manual” for the connected outdoor unit for details of wire, GFCI and main switch for outdoor unit.

  • Page 52: Figure 26. Positions Of Electrical Wiring Connection

    NOTICE Check for the recommended size GFCI in table 7.1 of the "Installation and Maintenance Manual" for the outdoor unit. Between indoor and outdoor units, use dual-conductor, AWG18 (0.82mm ) stranded copper cable for communication cable. Do not use any cable with more than two conductors. Twisted pair or shielded cable can be used in environments with excessive electrical noise to reduce the possibility of communication errors between system components.

  • Page 53: Figure 27. Reconnect Wiring

    (1) Connect the cable for the optional controller or the optional extension cable to the terminals inside the control box through the connecting hole of the enclosure. (2) Connect the power supply and the ground wiring to the terminals in the control box. (3) Connect the cables between this product and the outdoor unit to the terminals inside the control box.

  • Page 54: Figure 28. Wired Controller Connections

    (b) Single Wired Controller for Individual Operation Setting Indoor Unit Indoor Unit with DX-Kit with DX-Kit Outdoor Unit Wired The communication cables Controller for the wired controller is necessary. (c) Wired Controller Connections between different Refrigerant Cycles Indoor Unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit...

  • Page 55: Figure 29. Wired Connections From The Control Box

    21.4 Wiring Connection 21.4.1 An overview of wiring connections from the DX-Kit control box is shown below. Thermistor Cable (Accessory) Control Box PCB1 Terminal Block TB2 Use either wiring holes of air handler for routing the fan motor wiring inside Wired Controller Cable the air handler THM1...

  • Page 56: Figure 30. Attaching Cable Holders To Air Handler

    Cable Holder for Air Outlet Thermistor Position of Cable Holder for Gathering and Securing Excess Wiring For Air Inlet and Air Outlet Thermistors Cable Holder Cable Clamp Ø Thermistor to 4- / 16 (70 to 110) Cable Holder for Air Inlet Thermistor Thickness of Cable Holder Figure 30.

  • Page 57: Figure 31. Wiring Holes Of Air Handler

    Knock-out holes of air handler For fan motor wiring THM1 THM2 THM3 THM4 THM5 CN1925 PCN2 PCN3 CN14 FUNC DSW6 RSW1 DSW8 DSW7 Rubber bushing of air handler DSW5 RSW2 D11 D10 DSW3 DSW4 For thermistors HIC1 EFR1 LED3 LED1 LED4 EFS1 CN11...

  • Page 58: Figure 32. Thermistor Positions

    Ø1inch(26mm)Connecting Hole for Communication Cable, Wired Controller Cable, Thermistor Cable and Expansion Valve Cable Air Outlet Thermistor Use the holes of air handler with cable clamps for securing the thermistor cable. Protect the wiring from sharp edges. Accessory Piping of Air Handler Protect the wiring from sharp edges (Liquid Pipe) Liquid Pipe Thermistor...

  • Page 59: Figure 33. Thermistor Connectors

    NOTE: When tting the pipe thermistors, remember that they must be secured correctly by the thermistor holder, ensuring the perfect contact between the pipe and thermistor. Cover it completely with insulation, butyl sheet and pipe insulation to protect it from the effect of the surrounding ambient temperature. Replace them if damaged during maintenance work.

  • Page 60: Figure 34. Thermistor Installation With Details

    Enlarged View of P Thermistor Cable Clamp Pipe Insulation Gas Pipe Line Pipe Thermistor Pipe Insulation Piping Butyl Sheet Liquid Pipe Line Butyl Sheet Thermistor Holder Liquid Pipe Thermistor Liquid Pipe Thermistor Figure 34. Thermistor Installation with Details NOTES: 1. Pay attention to the attaching direction and position of the lead cable. 2.

  • Page 61: Figure 35. Air Inlet And Outlet Thermistors

    In case that the thermistors supplied with the DX Kit are not long enough, please make sure that the length extension is properly done avoiding the sensing distortion and that the joint is properly insulated to avoid any electrical failure. NOTE: When tting the air inlet and outlet thermistor, remember that they must be secured correctly, in an adequate place to avoid external in uences, like ambient conditions, and where the air temperature is signi cant.

  • Page 62: Figure 36. Positions Of Air Inlet And Outlet Thermistors

    Air Outlet Thermistor (THM2) t e l t s i (THM1) Figure 36. Positions of Air Inlet and Outlet Thermistors The thermistor must be installed properly in order to avoid water onto the thermistor. 21.4.4 Thermistor Extension Installation Extension Length Thermistor Thermistor Thermistor...

  • Page 63: Figure 38. Connection To Fan Motor

    21.4.5 Connection to Fan Motor Connect the fan motor wiring (high voltage) from the control box according to the wiring diagram shown below. For EXV-018E to EXV-048E Only For EXV-060E Only 1/L1 1/L1 2/L2 2/L2 Field Field Connection Connection PCB2 PCB2 Faston Connection...

  • Page 64: Figure 39. Connection To Fan Motor Inside Air Handler

    There are three wiring from the control box for the fan motor. • Wiring from "X2" terminal on PCB2 connects to "HI" terminal of fan motor. • Wiring from "X4" terminal on PCB2 connects to "MED" terminal of fan motor. •...

  • Page 65: Figure 40. Connection To Expansion Valve Box

    21.4.6 Connection to Expansion Valve Box (1) Remove the expansion valve box cover with the four screws. Then remove the terminal block cover with the four screws. (2) Connect the ve cable for the expansion valve to the corresponding terminals 1, 2, 3, 4, 6 (EXP. VALVE) of terminal block (TB2) inside the control box.

  • Page 66: Figure 41. Connection For Power Supply

    21.4.7 Connection for Power Supply Wiring and Communication and Wired Controller Cable (1) Pass the communication cable and the wired controller cable through the connecting hole for the communication cable on the DX-Kit control box. Connect the communication cable to terminals 1, 2 (CONTROL) of TB2 inside the control box. Connect the wired controller cable to terminals A, B (CONTROL) of TB2 inside the control box.

  • Page 67: Figure 42. Terminal Box Connection

    Terminal Block Connection and Remarks Control Box Terminal Block Control Box Control Box Terminal Block 1 (TB1) Terminal Block 1 (TB1) THM1 THM1 THM2 THM2 THM3 THM3 THM4 THM4 THM5 THM5 CN1925 CN1925 PCN2 PCN2 PCN3 PCN3 CN14 CN14 FUNC FUNC RSW1 RSW1...

  • Page 68: Figure 43. Expansion Valve Box Terminal Block

    Expansion Valve Box Terminal Block Expansion Valve Box Expansion Valve Box Expansion Valve Box Terminal Block 3 (TB3) EXP.VALVE EXP.VALVE Figure 43. Expansion Valve Box Terminal Block Terminal Block 3 Terminal No. Label No. Description EXP. VALVE: Expansion Valve Connection: Link to control box.

  • Page 69: Figure 44. Position Of Dip Switches

    21.5 DIP Switch Settings (1) Turn OFF the power supply to both DX-Kit and outdoor units before adjusting DIP switch settings. Otherwise, the setting will be invalidated and not take effect. (2) Position of DIP switches are shown below. Figure 44. Position of DIP Switches (3) Unit No.

  • Page 70: Figure 47. Refrigerant Cycle Setting

    (5) Refrigerant Cycle No. Setting (RSW2 & DSW5) Refrigerant Cycle No. Setting This setting is required. The unit arrives with all DSW5 (Tens Digit) RSW2 (Units Digit) Ex.) Set at No.5 Cycle DSW5 settings in the OFF position. Setting Set by inserting Position slotted screwdriver into the groove.

  • Page 71: Test Run

    22. Test Run 22.1 Before Test Run Verify that there are no problems with the installation, and do not perform Test Run until all the following conditions have been resolved. Refer to the "Installation and Maintenance Manual" for the outdoor unit for details on Test Run operations from the outdoor unit.

  • Page 72: Figure 49. Test Run: 2 Units

    The total number of connected indoor units is indicated on the LCD (Liquid Crystal Display). In the case of a twin combination (set of two indoor units), the total number of the connected indoor units is displayed as “2 units”, and where there is a triple combination (set of three indoor units), the total number of the connected indoor units is displayed as “3 units”.
  • Page 73 22.3 Alarm Code Alarm (Troubleshooting) Code Table Code Category Nature of Problem Likely Cause Activation of the oat switch; (High water level Activation of a protection device Indoor Unit present in the drain pan.) A problem exists in the (Float switch) piping.

  • Page 74: Cautions

    NOTICE Do NOT operate the air conditioning just to run checks on electrical wiring until preparations for the Test Run phase is completed. All the installation work of the air conditioning is completed. Hand over this information to the building owner and request they maintain all the equipment manuals and warranty.

  • Page 75: Startup Sheet

    24. Startup Sheet PMGB0406B rev.1 (Ins)DX-Kit̲4e-rev1.indd   75 (Ins)DX-Kit̲4e-rev1.indd   75 2016/11/25   15:33:07 2016/11/25   15:33:07...
  • Page 76 PMGB0406B rev.1 (Ins)DX-Kit̲4e-rev1.indd   76 (Ins)DX-Kit̲4e-rev1.indd   76 2016/11/25   15:33:07 2016/11/25   15:33:07...
  • Page 77 © 2016 Johnson Controls, Inc. PMGB0406B rev.1 - 11/2016 Code No. LIT-12012314 Revised September 2016 (Ins)DX-Kit̲4e-rev1.indd   B-C-1 (Ins)DX-Kit̲4e-rev1.indd   B-C-1 2016/11/25   15:33:07 2016/11/25   15:33:07...

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