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Frigicoll AHUKZ-00F Installation & Owner's Manual

Air handling unit application kit
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INSTALLATION & OWNER'S
MANUAL
Air Handling Unit Application Kit
AHUKZ-00F (KAHU-90.5)
AHUKZ-01F (KAHU-200.5)
AHUKZ-02F (KAHU-360.5)
AHUKZ-03F (KAHU-560.5)
Original instructions.
Read this manual carefully before using the product, and keep it for future reference.
All the pictures in this manual are for illustration purpose only.

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Summary of Contents for Frigicoll AHUKZ-00F

  • Page 1 INSTALLATION & OWNER'S MANUAL Air Handling Unit Application Kit AHUKZ-00F (KAHU-90.5) AHUKZ-01F (KAHU-200.5) AHUKZ-02F (KAHU-360.5) AHUKZ-03F (KAHU-560.5) Original instructions. Read this manual carefully before using the product, and keep it for future reference. All the pictures in this manual are for illustration purpose only.

  • Page 3: Table Of Contents

    Contents ABOUT THE DOCUMENTATION About this Document / 1 Safety Instructions / 2 SAFETY WARNING Safety Precautions / 4 Electric Safety Requirements / 5 About the Refrigerant / 6 INTRODUCTION Overview / 9 System Diagram / 9 Three Views / 11 Specifications / 12 BEFORE INSTALLATION Accessory Package / 13...
  • Page 4 ON-SITE SETTINGS Setting Precautions / 59 Dip Switch definition / 59 Address Setting / 59 Model Setting / 61 Setting of Parallel Connection / Capacity Setting / 62 Setting of Controller Type / 65 Mode Control / 66 Fan Control / 66 Capacity Control / 70 Anti-cold Air Temperature Setting / 76 Setting of T1 Sensor Detection Value Compensation / 76...

  • Page 5: About The Documentation

    ABOUT THE DOCUMENTATION About this Document NOTE Make sure that the user has the printed documentation and ask him/her to keep it for future reference. Target audience Authorised installers + end users NOTE This appliance is intended to be used by expert or trained users in shops, in light industry, and on farms, or for commercial and household use by lay persons.

  • Page 6: Safety Instructions

    Safety Instructions Please thoroughly read and ensure that you fully understand the safety precautions (including the signs and symbols) in this manual, and follow relevant instructions during use to prevent damage to health or property. Safety signs Indicates a hazard with a high level of risk which, if not avoided, will result in DANGER serious injury.
  • Page 7 DANGER Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. Servicing shall only be performed as recommended by the equipment manufacturer.

  • Page 8: Safety Warning

    SAFETY WARNING WARNING CONTENTS Ensure Proper Professional Only Earthing PROHIBITION SIGNS No Laying No Strong Currents No Open Flame; Fire, No Acid or Inflammable Thing Open Ignition Source Alkali Materials and Smoking Prohibited Safety Precautions DANGER In the event of refrigerant leakage, smoking and open flames are prohibited. Disconnect the main power switch immediately, open windows to allow ventilation, keep away from the leakage point, and contact your local dealer or technical support to request a professional repair.
  • Page 9 CAUTION This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.

  • Page 10: About The Refrigerant

    About the Refrigerant WARNING The following applies to R32 refrigerant systems. Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
  • Page 11 During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
  • Page 12 i) Do not exceed the maximum working pressure of the cylinder, even temporarily. j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off. k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

  • Page 13: Introduction

    INTRODUCTION Overview • This Kit device can only be connected to VRF systems and cannot be connected to modular systems. • Kit devices can only be used in conjunction with third-party AHUs. Do not connect this Kit device to other indoor devices.
  • Page 14 NOTE The components marked with dashed boxes in the system diagram indicate that they need to be purchased separately from the factory. Procurement Name Description Requirement Supports heat pump type and heat recovery type VRF Outdoor unit Factory-supplied outdoor units Factory-supplied Reserve brazing joint for the refrigerant inlet/outlet pipe Third-party AHU...

  • Page 15: Three Views

    Name Box cover Main control board Main control board support seat Electronic expansion valve assembly Box body Three Views (Unit: mm) Front view Left view 133.8 129.5 Vertical installation...

  • Page 16: Specifications

    Bottom view Knockout hole Connect outdoor units Connect AHU Specifications AHUKZ-00F AHUKZ-01F AHUKZ-02F AHUKZ-03F Kit models (KAHU-90.5) (KAHU-200.5) (KAHU-360.5) (KAHU-560.5) Power supply 220–240 V~ 50/60 Hz Net weight Gross weight Operating ambient temperature °C -25 ~ 52 AHU heat exchanger Cooling °C...

  • Page 17: Before Installation

    BEFORE INSTALLATION Accessory Package Name Illustration Quantity Specifications Remarks Installation and Operation Manual — Kit selection, installation and use Auto Wired controller No permissionH oldr echeck AU-heat — Kit control and information query Auto Set Temp Humidity OFF/ON Cool Later OFF/ON Hold Cancel Sterilize...

  • Page 18: Connection Of Indoor Unit And Outdoor Unit

    Name Illustration Quantity Specifications Remarks Plastic expansion pipe 4×30 mm Used with self-tapping screws Cable tie 4.8×300 mm Bind the extension cable of the sensor NOTE Check the accessories against the above list and contact your local dealer if any items are missing. Connection of Indoor Unit and Outdoor Unit Supported models CAUTION...
  • Page 19 Indoor unit combination Outdoor unit V6/V6i / V6pro Mini C 2/ Mini V5X/ Combination Capacity control method V8 Platform / VX / VXi / C / Atom B V4+W VXpro /VC Control 1 √ √ × × × Input set temperature AHU kit -F Control 2...
  • Page 20 [1] Indoor unit does not include Fresh Air Processing Unit and Hydro Module. [2] Input the setting temperature (Ts) using the controller or input the set temperature value (Ts) using a third party controller 0-10 V. Description of the connection mode of the outdoor unit, ahu, and kit No general indoor unit in the system, and a heat exchanger is connected after kits are connected in parallel...
  • Page 21 No general indoor unit in the system, and multiple heat exchangers are connected after kits are connected in parallel Multiple kits are connected in parallel, and each kit corresponds to a heat exchanger of the AHU. A maximum of four kits can be connected in parallel.
  • Page 22 WB, subcooling = 5 °C. DIP Set Cooling Capacity Design Range Heating Capacity Design Range Capacity (kW) (kW) Model Index (HP) Minimum Value Maximum Value Minimum Value Maximum Value AHUKZ-00F (KAHU-90.5) 11.2 11.2 11.2 12.5 11.2 12.5 AHUKZ-01F (KAHU-200.5) AHUKZ-02F (KAHU-360.5)
  • Page 23 AHU heat exchanger copper tube internal volume Heat Exchanger Copper Tube Internal Volume Model DIP Set Capacity Index (HP) Minimum Value Maximum Value 1 000 AHUKZ-00F 1 420 (KAHU-90.5) 1 120 1 670 1 400 2 090 1 670 2 510...
  • Page 24 Return Air Temperature Control Supply Air Temperature Control Model Capacity Index (HP) Maximum Maximum Minimum Value Minimum Value Value Value AHUKZ-00F 1 047 (KAHU-90.5) 1 232 1 120 1 540 1 344 1 848 1 008 1 434 1 971...
  • Page 25 + A H U K Z - 0 3 F ( K A H U - The two models must be adjacent to each other 560.5) AHUKZ-00F (KAHU-90.5) + Yes, the maximum capacity model is 01F, and the minimum capacity model is 00F. AHUKZ-01F (KAHU-200.5)

  • Page 26: Installation Of Cooling System

    I N S T A L L A T I O N O F COOLING SYSTEM Installation of Kit Selection of installation location Select an installation location that meets the following conditions: The AHU kit is not waterproof. Do not install it in direct sunlight, which will increase the internal temperature of the AHU kit, shorten the service life and affect the operation.
  • Page 27 Fixation Method 1: The electronic expansion valve assembly is placed in the box Operation Procedure Illustration Precautions The distance between the box body and Step 1: the AHU must be kept within 10 meters (the length of the temperature sensor Install the kit box on a flat, solid wall wire is about 1150mm –...
  • Page 28 Operation Procedure Illustration Precautions Step 3: The coil body terminal XP11 and the connector terminal XS11 are connected in Separate the coil terminal XP11 of a buckle-type manner. When separating, the electronic expansion valve from press the XP11 terminal card with your the connector terminal XS11, and fingers and then pull out the XS11 then pull out the connecting cable...

  • Page 29: Pipe Connection

    Pipe Connection Precautions CAUTION The installation of refrigerant pipeline should not damage the load-bearing structure and decorative style of the building; Refrigerant pipeline should be designed to ensure correct direction, reasonable branching and the shortest length; The layout of refrigerant pipeline must bypass the position of the maintenance port of the unit and reserve enough maintenance space;...
  • Page 30 Pipeline processing Flaring Slope Rough Burrs 90° Flaring and nut fastening method Cut off the piping with a pipe cutter (by repeatedly rotating the pipe cutter), and insert the pipe into the connecting nut to flare. The gas pipe and liquid pipe with an outer diameter of less than or equal to 19mm Pipe cutter can be connected by flaring.
  • Page 31 CAUTION When bending pipes, the copper pipes shall not be wrinkled or deformed on the inside. When a spring pipe bender is used, clean it before it is inserted into the copper pipe. The bending angle should not exceed 90°; otherwise, wrinkles will be form in the pipe, which increases the likelihood of breakage.
  • Page 32 CAUTION Nitrogen pressure is kept at about 0.2–0.3 kgf/cm during welding. Use nitrogen for welding. Do not use flammable gas such as oxygen to avoid the risk of explosion. Use a pressure relief valve to keep the nitrogen pressure at 0.2 kgf/cm Select an appropriate position to add nitrogen.

  • Page 33: Heat Insulation

    Heat insulation Use the closed-cell foam insulation material, which is rated at a flame retardancy level of B1 and has a heat resistance of over 120 °C. Thickness of the insulation pipe: 1. When the diameter is equal to or greater than 15.9 mm, the insulation thickness is at least 20 mm.
  • Page 34 System piping type and connection description Schematic diagram of system piping connection and description of piping type Schematic diagram of piping connection (taking heat pump outdoor unit as an example): CAUTION The piping classification given in the figure is all liquid-side piping. For the gas-side piping, refer to the corresponding outdoor unit Installation Manual.
  • Page 35 Connect piping at a single kit inlet and outlet: a1, a2, b1, b2, c1, c2 Pipe outer diameter × wall thickness AHU Kit capacity value A(× 100 Pipe outer diameter Kit model Kit model (mm) (mm) AHUKZ-00F A ≤ 56 Φ 6.35 AHUKZ-00F Φ 8.0 × 0.75 (KAHU-90.5) (KAHU-90.5) 56 < A ≤ 90 Φ...
  • Page 36 Connection between kit inlet and outlet adapter and piping Pipeline size confirmation. Brazing part Braze Brazing part Copper pipe elbow Auxiliary pipe fitting Nitrogen Straight joint Auxiliary pipe fitting of copper pipe Figure 1 Figure 2 Figure 3 CAUTION Check the pipe diameters and wall thicknesses of the kit inlet and outlet adapters (see "Installation of Refrigeration System-Pipe Connection-Pipe Diameter Description") and connecting piping, and confirm whether the dimensions meet the requirements of plugging (it is recommended to insert the adapter into the connecting pipes).
  • Page 37 Welding requirements. Correct Correct Incorrect Braze Lateral Braze Braze Downward Upward CAUTION During welding, use a water spray device to spray water on wet cloth to ensure that the valve body temperature does not exceed 120°C during brazing. During the brazing process, ensure that other parts such as box, wire, and wiring across ring are protected from the influence of direct brazing flame.
  • Page 38 Installation of drain pump and water level switch Installation method of drain pump and water level switch In the selection of pump flow and lift, the maximum displacement of the AHU heat exchanger should be calculated, and the lift should be selected according to the actual installation site requirements; the appropriate pump should be selected in combination with the flow and lift characteristic curve of the pump.
  • Page 39 Installation of temperature sensor Location selection of T2A, T2 and T2B pipe temperature sensors Sensor composition Sensor wire Sensor body Sensor body and cable body diagram 2 T2A pipe temperature sensor T2A d 100 AHU heat exchanger CN43 Blue Refrigerant inflow Distributor The T2A sensor must be fixed to the capillary tube with the lowest temperature behind the distributor, as close to the...
  • Page 40 T2B tube temperature sensor 12 1 OD=1/2-5/8in CN43 12 1 OD=1/2-5/8in AHU heat 12 1 exchanger OD=1/2-5/8in The T2B sensor must be fixed on the horizontal gas collecting pipe of the heat exchanger (about 200mm away from the vertical gas collecting pipe), and the appropriate placement should be selected according to the pipe diameter.
  • Page 41 2 T2A pipe temperature sensor Insulating tape Aluminium-foil Protection paper Cable tie sponge Use Aluminium-foil paper to Fasten the sensor Heat Insulation Wrap with insulating tape fix the sensor body with a cable tie Treatment NOTE The Aluminium-foil paper must completely wrap the sensor body, and the entire sensor body should be kept close to the surface of the copper pipe.
  • Page 42 Sensor installation precautions Precautions Illustration The pipe temperature sensor wire body is fixed by a cable tie to prevent the sensor from loosening due to the stress of the body, which leads to the sensor detection temperature deviating from the real refrigerant temperature.
  • Page 43 Extensive sensor type Extension of Air Temperature Sensor CAUTION Fasten and fix the sensor extension cord at intervals with a cable tie. The sensor extension cable should be routed by special trunking or conduit, and it is forbidden to share trunking or conduit with strong-current wires! Installation of temperature sensors when kits are connected in parallel Parallel connection mode 1: After the kits are connected in parallel, only 1 heat exchanger is connected...
  • Page 44 Parallel connection mode 2: After the kits are connected in parallel, multiple heat exchangers are connected The 3 temperature sensors (T1, TA, T0) of AHU are connected to the master PCB as required, but not to the slave PCB. The three pipe temperature sensors (T2, T2A, T2B) on each heat exchanger coil are respectively connected to the corresponding kit PCB, and the connection diagram is as follows: Master unit Outdoor unit...

  • Page 45: Electrical System Installation

    ELECTRICAL SYSTEM INSTALLATION Precautions DANGER The power supply must be cut off before any electrical work is carried out. Do not conduct electrical work when the power is on; otherwise, it may cause serious personal injury. The unit must be earthed reliably and must meet the requirements of the local country/region. If the earthing is not reliable, serious personal injury due to electric leakage may occur.
  • Page 46 PCB Port PCB port diagram HIGH MIDDLE To master/slave AHU kit control box comm.bus To outdoor unit comm.bus Alarm Defrost To outdoor unit M1M2 comm.bus To wired controller Cooling operation port CTON (factory) Heating operation port HTON HEAT Heat mode COOL Cool mode CN42...
  • Page 47 PCB port description and function Port code Function Specification PCB power supply input 220-240 V~ CN47-2 HIGH Fan speed power input-HIGH 220-240 V~ F a n s p e e d p o w e r i n p u t - CN48-1 MIDDLE 220-240 V~...

  • Page 48: System Wiring And Description

    Port code Function Specification Port for connecting the master CN24 C1 C2 E 2.5-2.7 V DC and slave units CN43-10, CN43-9 (power supply) TA temperature sensor 0-3.3 V DC (varying) CN43-2, CN43-1 (power supply) T2B temperature sensor 0-3.3 V DC (varying) CN43-4, CN43-3 (power supply) T1 temperature sensor 0-3.3 V DC (varying)
  • Page 49 Kit internal cabling As shown in the figure on the left, the weak current wires connected to the top and right of the main board must be routed and fixed along the edge o f t h e m a i n board to avoid machine failure c a u s e d b y...

  • Page 50: Connection Of Communication Wires

    Connection of Communication Wires Connection of communication wires One controller to one indoor unit Communication Function Communication between kit and outdoor unit (Two controllers of master/slave to one indoor unit) kits communication HyperLink RS-485 (P/Q) RS-485 (P/Q/E) X1X2 RS-485 (C1C2) Type communication communication...
  • Page 51 Communication between KIT and outdoor unit Before installing communication wires, select a proper communication mode based on the following table. Supported kit-outdoor unit Indoor unit/Kit series Remarks communication mode 1. Any topology connection of communication wires. HyperLink (M1M2) 2. Two-core and non-polar communication for M1M2. communication 3.
  • Page 52 RS-485 (P/Q) communication Use a shielded cable for the P/Q communication and ensure the shield layer is properly earthed. P and Q ports are located at power supply terminal "CN21" of the main control board of the master kit. There is no distinction between negative and positive electrodes.
  • Page 53 Connection of communication wires of master/slave Kits The kit can be connected in parallel through RS-485 (C1C2) communication, and the address of the secondary AHU kit needs to be set by the third and fourth bits of the SW2 DIP. For details, see "Definitions of DIP Switches". The wiring of master/slave kits is as follows: Slave AUH kit X# (X≤3) Master AUH kit 1#...

  • Page 54: Connection Of Power Supply Cables And Fan Wires

    Connection of Power Supply Cables and Fan Wires Table of selection of power supply cable diameter and circuit breaker Cable diameter selection Nominal cross-sectional area (mm Rated current (A) Soft wire Hard wire ≤ 3 0.5 and 0.75 1 and 2.5 >...
  • Page 55 Fan speed control port CN47 and CN48 electrical parameter: Maximum load current Maximum load current Model Power supply (with AC water pumps) (without AC water pumps) AHUKZ-00F 220-240 V~50/60 Hz 2.5 A 3.5 A (KAHU-90.5)~01F AHUKZ- 02F (KAHU- 220-240 V~50/60 Hz...
  • Page 56 CAUTION Do not bond and connect the power supply cable. Bonding and connecting the power supply cable may cause it to heat up, resulting in a fire. The power supply cable must be crimped reliably using an If it fails to crimp the insulated circular terminal block due to insulated circular terminal block, and then connected to the on-site limitations, connect the power supply cables of the power supply terminal of the indoor unit, as shown in the...

  • Page 57: Electrical Control

    Type AHUKZ-00F (KAHU-90.5)~03F AHU kit power supply cable specifications 3 × 1.0 mm AHU kit fan speed control cable specifications 3 × 1.0 mm Refer to the Table of Selection of Line Diameter based on the Third-party control panel power supply cable specifications...
  • Page 58 AHU kit fan speed control cable Third-party control panel power input (three-phase AC) Single-phase AC Type AHUKZ-00F (KAHU-90.5)~03F AHU kit power supply cable specifications 3 × 1.0 mm AHU kit fan speed control cable specifications 3 × 1.0 mm Third-party control panel power supply cable...
  • Page 59 Circuit breaker AHU kit fan speed control cable Single-phase AC Type AHUKZ-00F (KAHU-90.5)~03F AHU kit power supply cable specifications 3 × 1.0 mm 0–10V DC fan speed signal cable specifications 2 × 0.75 mm Third-party control panel power supply cable...
  • Page 60 Power supply cable connection The kits or indoor units in the same air conditioning system must be powered uniformly. The wiring diagram is as follows. Power supply for indoor unit × × × × Circuit breaker Distribution box Distribution box Distribution box Slave AUH kit X# (X≤3) Distribution...

  • Page 61: Other Wirings

    Other Wirings Connection of water pump and water level switch control cable: The kit can only drive AC water pumps with a maximum current of 1 A. If you need to drive more powerful water pumps, connect an external AC contactor. The water level switch port is connected with a short-wire by default before delivery.

  • Page 62: On-Site Settings

    ON-SITE SETTINGS Setting Precautions After the DIP setting is completed, it must be powered off and powered on again before it can take effect. Dip Switch Definition OFF means down ON means upper Address Setting When it is powered on for the first time, use the wired controller to set the address of the kit. If no address is set, the wired controller will display U38 error.
  • Page 63 CAUTION Kit addresses can be divided into real addresses and virtual addresses, with only one real address, and the number of virtual addresses depends on the nominal capacity of Kit. For the mapping between the actual and virtual addresses of each capacity segment, see Capacity and Address Settings. If the nominal capacity of Kit is less than or equal to 18kW, only the real address set by the controller is available.

  • Page 64: Model Setting

    Use the DIP switches SW4-2, SW10-1/ SW10-2 combination on the PCB to set the model of the kit, as shown in the following table. DIP switch Model SW4-2 SW10-1/ SW10-2 AHUKZ-00F (KAHU-90.5) AHUKZ-01F (KAHU-200.5) AHUKZ-02F (KAHU-360.5) AHUKZ-03F (KAHU-560.5) Capacity Setting Use the DIP ENC1 and DIP switch SW9-3/SW9-4 combination on the PCB to set the capacity of the kit.
  • Page 65 Capacity setting table Disc switch: DIP switch: SW9-3 / SW9-4 ENC1 Nominal cooling Nominal cooling Addresses Addresses capacity capacity Number Real virtual Real virtual addresses addresses addresses addresses 1.8/2.2 Settings non-existent 28.0 Settings Settings + 1 2.5/2.8 Settings non-existent 33.5 Settings Settings + 1 Settings + 1...
  • Page 66 Disc switch: DIP switch: SW9-3 / SW9-4 ENC1 (Factory default) Nominal cooling Nominal cooling Addresses Addresses capacity capacity Number Real virtual Real virtual addresses addresses addresses addresses Settings + 1 Settings + 1 42.0 117.0 Settings …… 74.0 207.0 Settings ……...
  • Page 67 When they are connected in parallel, the capacity of both the master and slave must be set. The total capacity of the master and slave must be no more than 120 HP! Nominal cooling capacity Model Range Factory default AHUKZ-00F (KAHU-90.5) HP ≤ 3 AHUKZ-01F (KAHU-200.5) 3.2 ≤ HP ≤ 6.5 AHUKZ-02F (KAHU-360.5) 7 ≤ HP ≤ 12 AHUKZ-03F (KAHU-560.5)

  • Page 68: Setting Of Controller Type

    Setting of the number of slaves in parallel The combination of DIP switch SW1-3/SW1-4 on the master PCB can be used to set the number of slaves. CAUTION The number of connected slave kits in parallel can only be set on the master PCB, and does not need to be set on the slave.

  • Page 69: Mode Control

    Control mode setting CAUTION The output number of fan gear can only be set on the PCB of the main machine, and the slave machine does not need to be set. Return air temperature control (factory Dip switch Supply air temperature control default) SW4-1 Mode Control...
  • Page 70 Setting of fan gear output quantity CAUTION The output number of fan gear can be set on the master PCB, and does not need to be set on the slave. *1: When using third-party controllers, If the main control PCB does not receive the fan speed input signal, the fan speed gear is set according to the following table.
  • Page 71 Setting of 0–10 V fan speed signal output voltage values α, β and δ CAUTION When ENC2/ENC3/ENC4 DIP switches are used to set the 0–10 V fan speed signal output voltage value, α<β<δ. α Set DIP Switch: ENC2 β Set DIP Switch: ENC3 δ...
  • Page 72 Thermo OFF fan speed control (*1） Capacity Control Modes Cooling/heating thermo OFF Return air temperature control Supply air temperature control Default: Maintain the current set fan speed (set Maintain the current set fan speed (set auto fan Cooling thermo auto fan speed and operate according to 7 fan speed and operate according to 7 fan speed speed (high fan speed)), but the standby fan (high fan speed))

  • Page 73: Capacity Control

    Capacity Control Introduction to capacity control modes The capacity control mode is selected according to the following table based on the control type and controller type. (1) : The 0-10V voltage of DDC output is a linear function of the set temperature, and the set temperature value can be converted to 0-10 V voltage value through programming.
  • Page 74 Use a third-party controller to set the 0–10 V input temperature value (*): The standard value is the intermediate voltage value of each voltage range. Enter a set temperature value 0-10V Input voltage Return air temperature control Supply air temperature control Voltage range Standard Heating mode(°C) Cooling mode(°C) Cooling mode(°C) Heating mode(°C)
  • Page 75 Use a third-party controller to set the 0–10 V input capacity gear value 0-10 V input voltage and capacity range, capacity demand value corresponding table 0-10 V input voltage and capacity gear back Capacity range and capacity demand value difference diagram Capacity requirement sent to the outdoor unit Connect V6 Y1/M-V...
  • Page 76 For example： Output voltage and temperature operation difference Example mode conversion formula In cooling mode, take ΔTmax=3, the target temperature is 18 °C Measured Output voltage of the ΔT Cooling capacity output temperature third-party controller 26 °C 8 °C 10 V Maximum cooling capacity output 22 °C 4 °C...
  • Page 77 Capacity level correction back difference chart Max(Tc_max-2, min(T2, T2B))/°C Capacity gear -1 Capacity gear keeps Capacity gear +1 ● Tc_max : indicates the maximum high-pressure pressure saturation temperature detected by the outdoor unit ● T2 : Temperature sensor in the middle of the AHU heat exchanger connected to the Kit host ●...
  • Page 78 Setting Te/Tc values for each capacity gear when connecting V8 series outdoor units The user can set the Te/Tc value corresponding to the capacity gear based on the AHU return air temperature range, the set target temperature, and the AHU heat transfer requirement. WARNING The controller type can only be set on the master PCB, and no setting is required on the slave.

  • Page 79: Anti-Cold Air Temperature Setting

    Anti-cold Air Temperature Setting Temperature controll Dip switch : SW3-1/SW3-2 type Type Fan close: 15 °C Fan close: 10 °C Fan close: 24 °C Return air Anti cold air Fan run: 28 °C temperature control ineffective Fan run: 18 °C Fan run: 28 °C (Factory default) Fan close: 5 °C...

  • Page 80: Setting Of Project Parameters

    Setting of Project Parameters Settings of entering and exiting project parameter This unit can be set with the power failure memory function for power-on recovery, to avoid the failure of user settings caused by short-term power failure. However, it is only valid when the factory supplied controller is connected. Take the factory controller in the accessory package as an example: The parameters can be set when the controller is in the ON or OFF state.
  • Page 81 Setting of return air temperature control thermal off fan speed Paramete Name Setting Value Default Description C o o l i n g 00/01/02/03/ Delayed shutdown of fan o p e r a t i o n 04/05/06/07/ Maintain the current set fan speed (set auto fan speed thermal OFF fan and operate according to 7 fan speed (high fan speed)), speed setting...

  • Page 82: Dry Contact Input And Output

    DRY CONTACT INPUT AND OUTPUT Input Dry Contact Dry contact Port Description The factory port is in the short-circuit closed state. When the user chooses the fan motor with feedback signal (only the feedback level signal is supported; the pulse F a n O N / signal cannot be identified), connect the feedback signal cable to this port;...
  • Page 83 Dry contact Port Description If a third-party controller is used and the capacity control mode is input capacity gear value, the port status follows the following logic. Note: The positive or negative logic is set up using the factory-supplied wired controller. When the AHU kit triggers fault or alarm d16/d17, the port is Set to positive logic Failure output...

  • Page 84: Error Codes And Spot Check Query

    E R R O R C O D E S A N D SPOT CHECK QUERY Error Codes If the faults listed in the following table are triggered, refer to the relevant maintenance manual for treatment. Error Digital Definition codes display Emergency stop DANGER...
  • Page 85 Error Digital Definition codes display Abnormal communication between the indoor unit main control board and 1# function expansion board Abnormal communication between the indoor unit main control board and 2# function expansion board Abnormal communication between the indoor unit main control board and switch module The indoor unit is powered off Air inlet temperature of the indoor unit is too low in heating mode...

  • Page 86: Check Query

    Operating Status Code Description Code Definition Oil return operation When the indoor unit is running, and the oil return signal sent by the outdoor unit is received, the indoor unit enters the oil return operation. The indoor unit fan may stop running due to the anti-cold air (If the indoor unit returns oil in the heating mode, it will switch to Cool mode, and the fan will be turned off or run at the lowest speed).
  • Page 87 List of Spot Check Information of the Display Box Definition Indoor unit address (If there are multiple addresses, they are displayed one by one every 0.5 s) Capacity HP of indoor unit (When multiple units are connected in parallel, the total HP of master and slave units is displayed) Set temperature value or set voltage value Set temperature value or input capacity gear value executed by the program...
  • Page 88 Check No. Parameter setting interface Hold for 3s to Selection B A C K OK key enter the page buttons button List of Spot Check Information of Wired Controller No. Displayed content Indoor unit address Capacity HP of indoor unit (When multiple units are connected in parallel, the total HP of master and slave units is displayed) Value of the set temperature Set temperature value executed by the program...
  • Page 89 M A I N T E N A N C E A N D SERVICE Removal of Key Components Removal of main control board Loosen the screws on the electrical control box Remove the electrical control box cover. cover. Electrical control box cover Remove the connection cables from the main Remove the main control board...
  • Page 90 Removal of electronic expansion valve Remove the connecting pipes. Loosen the screws on the electrical control box cover. Weld the refrigerant connecting pipes at the nozzle of the electronic expansion valve. Welding torch Remove the electrical control box cover. Remove the screws fixing the electrical control mounting board and the coil terminals of the electronic expansion valve in place, and turn the electrical control mounting board downward.
  • Page 91 16126000009027 V.D...

This manual is also suitable for:

Ahukz-01fAhukz-02fAhukz-03fKahu-90.5Kahu-200.5Kahu-360.5 ... Show all

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