Daikin ERQ Series Service Manual
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Daikin ERQ Series Service Manual

Daikin ERQ Series Service Manual

Condensing unit three phase
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ESiEN09-06 A
Service Manual
ERQ Condensing Unit Three Phase
ERQ 125/200/250 A7W1B
EKEQD/F/MCB(A)V3 (control box)
EKEXV 50/63/80/100/125/140/200/250/400/500

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Summary of Contents for Daikin ERQ Series

  • Page 1 ESiEN09-06 A Service Manual ERQ Condensing Unit Three Phase ERQ 125/200/250 A7W1B EKEQD/F/MCB(A)V3 (control box) EKEXV 50/63/80/100/125/140/200/250/400/500...

  • Page 3: Table Of Contents

    ESiEN09-06 A 1. Introduction ....................i 1.1 Safety Cautions ..................i 1. Model Names of Outdoor Unit, Control Box and Expansion Valve Kit..2 1.1 Outdoor Units ...................2 1.2 Control Box....................3 1.3 Expansion Valve Kit .................4 2. Combination Table ..................5 1. Specifications ..................8 1.1 Outdoor Units ...................8 1.
  • Page 4 ESiEN09-06 A 5.2 Demand Operation .................43 5.3 Heating Operation Prohibition ..............43 6. Outline of Control ..................44 6.1 Thermostat Sensor in Remote Control (only for Z-control) ....44 6.2 Hot Start Control (In Heating Operation Only)........45 6.3 Freeze Prevention ..................46 6.4 Low Outdoor Air Temperature Protection Control ........47 1.
  • Page 5 ESiEN09-06 A 3.4 “A6” AHU: Fan Motor (M1F) Lock, Overload........197 3.5 “A9” AHU: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) ..................198 3.6 “AF” AHU: Drain Level above Limit ............200 3.7 “AJ” AHU: Malfunction of Capacity Determination Device ....201 3.8 “C4”...
  • Page 6 ESiEN09-06 A 3.44 “U5” AHU: Malfunction of Transmission Between Remote Controller and AHU ................254 3.45 “U9” AHU: Malfunction of Transmission Between AHU and Outdoor Units in the Same System ............255 3.46 “UA” Improper Combination of AHU and Outdoor Units, AHUs and Remote Controller .................256 3.47 “UF”...

  • Page 7: Introduction

    ESiEN09-06 A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 8 Introduction ESiEN09-06 A Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 9 ESiEN09-06 A Introduction Warning Be sure to use the specified cable to connect between the AHU and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
  • Page 10 Introduction ESiEN09-06 A Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
  • Page 11 ESiEN09-06 A 1. Model Names of Outdoor Unit, Control Box and Expansion Valve Kit..2 1.1 Outdoor Units ...................2 1.2 Control Box....................3 1.3 Expansion Valve Kit .................4 2. Combination Table ..................5 General Information...

  • Page 12: Model Names Of Outdoor Unit, Control Box And Expansion Valve Kit

    Model Names of Outdoor Unit, Control Box and Expansion Valve Kit ESiEN09-06 A 1. Model Names of Outdoor Unit, Control Box and Expansion Valve Kit Outdoor Units Outlook Model name Series Model Name Power Supply Inverter Heat Pump 125A 200A 250A W1: 3 phase 380~415V, 50Hz General Information...

  • Page 13: Control Box

    Control type X Control of refrigerant temperature by means of external device (DDC controller). Control type Y Control of evaporation and condensing temperature (T ) by Daikin control (no DDC needed). Control type Z Control of air temperature (T or T ) by Daikin control (no DDC needed).

  • Page 14: Expansion Valve Kit

    Model Names of Outdoor Unit, Control Box and Expansion Valve Kit ESiEN09-06 A Expansion Valve Kit Outlook Expansion valve kit installation drawing: Model name Limits for outdoor unit (expansion valve kit). Outdoor unit (class) EKEXV kit EKEXV63~140 EKEXV100~250 EKEXV125~250 Depending on the heat exchanger, a connectable EKEXV (expansion valve kit) must be selected to these limitations.

  • Page 15: Combination Table

    ESiEN09-06 A Combination Table 2. Combination Table Control box Expansion valve kit Outdoor unit EKEQDCBV3 EKEQFCBV3 EKEXV63 EKEXV80 EKEXV100 EKEXV125 EKEXV140 EKEXV200 EKEXV250 three ERQ125 phase ERQ200 ERQ250 Heat pump P: Pair: Combination depending on AHU heat exchanger volume and capacity. Allowed heat exchanger Allowed heat exchanger capacity - COOLING(kW)
  • Page 16 Combination Table ESiEN09-06 A General Information...
  • Page 17 ESiEN09-06 A 1. Specifications ..................8 1.1 Outdoor Units ...................8 Specifications...

  • Page 18: Specifications

    Heating 4,00 4,50 4,09 Capacity range Nominal input Cooling 3,52 5,22 7,42 Heating 4,00 5,56 7,70 PED category Casing Colour Daikin white Material Painted galvanised steel Dimensions Unit Height 1680 Width Depth Packing Height 1855 Width 1055 Depth Weight Unit...
  • Page 19 ESiEN09-06 A Specifications TECHNICAL SPECIFICATIONS ERQ125A7W1B ERQ200A7W1B ERQ250A7W1B Operation Cooling °CDB range °CDB Heating °CWB °CWB Sound power Sound level (nominal) Sound pressure Refrigerant Type R-410A Charge Control Electronic expansion valve Nr of circuits Refrigerant oil Type Synthetic (ether) oil Charged volume Piping Liquid...
  • Page 20 Specifications ESiEN09-06 A ELECTRICAL SPECIFICATIONS ERQ125A7W1B ERQ200A7W1B ERQ250A7W1B Notes (1) European/international technical standard setting the limits for voltage changers, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated 75A. (2) European/international technical standard setting the limits for harmonic currents produced by equipment connected to public low-voltage system with input current >...
  • Page 21 ESiEN09-06 A 1. Refrigerant Circuit .................12 1.1 ERQ 125 A7W1B ...................12 1.2 ERQ 200 A7W1B ...................14 1.3 ERQ 250 A7W1B ...................16 2. Functional Parts Layout ................18 2.1 ERQ 125 A7W1B ...................18 2.2 ERQ 200 A7W1B ...................19 2.3 ERQ 250 A7W1B ...................20 Refrigerant Circuit...

  • Page 22: Refrigerant Circuit

    Refrigerant Circuit ESiEN09-06 A 1. Refrigerant Circuit ERQ 125 A7W1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 188Hz by using the inverter. The number of operating steps is as follows when Inverter compressor is Inverter compressor (INV) operated.
  • Page 23 ESiEN09-06 A Refrigerant Circuit ERQ 125 A7W1B 3D050782 Refrigerant Circuit...

  • Page 24: Erq 200 A7W1B

    Refrigerant Circuit ESiEN09-06 A ERQ 200 A7W1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter, while Standard compressor is operated with commercial power supply Inverter compressor (INV) only.
  • Page 25 ESiEN09-06 A Refrigerant Circuit ERQ 200 A7W1B 3D050783 Refrigerant Circuit...

  • Page 26: Erq 250 A7W1B

    Refrigerant Circuit ESiEN09-06 A ERQ 250 A7W1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 27 ESiEN09-06 A Refrigerant Circuit ERQ 250 A7W1B 3D050784 Refrigerant Circuit...

  • Page 28: Functional Parts Layout

    Functional Parts Layout ESiEN09-06 A 2. Functional Parts Layout ERQ 125 A7W1B Plan Accumulator ass'y Heat exchanger ACCUMULATOR THERMISTOR Front View THERMISTOR Pressure switch (High pressure protection) (S1PH) 4 way valve THERMISTOR (Y3S) Solenoid valve (Hot gas bypass) THERMISTOR (Y1S) ELECTRONIC EXPANSION VALVE THERMISTOR Solenoid valve (Accumulator oil return)

  • Page 29: Erq 200 A7W1B

    ESiEN09-06 A Functional Parts Layout ERQ 200 A7W1B Plan Heat exchanger Accumulator High pressure sensor (S1NPH) THERMISTOR Front View THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC THERMISTOR THERMISTOR THERMISTOR THERMISTOR Refrigerant Circuit...

  • Page 30: Erq 250 A7W1B

    Functional Parts Layout ESiEN09-06 A ERQ 250 A7W1B Plan Accumulator Heat exchanger THERMISTOR THERMISTOR Front View THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC THERMISTOR THERMISTOR THERMISTOR THERMISTOR Refrigerant Circuit...
  • Page 31 ESiEN09-06 A 1. Function general ...................22 1.1 Symbol ....................22 1.2 Operation Mode..................23 2. Basic Control..................24 2.1 Normal Operation ...................24 2.2 Compressor PI Control................25 2.3 Step Control of Outdoor Unit Fans ............27 2.4 Outdoor Unit Fan Control in Cooling Operation ........28 3.

  • Page 32: Function General

    Function general ESiEN09-06 A 1. Function general Symbol Symbol Electric symbol Description or function 20S1 Four way valve (Energize during heating) – Discharge pipe superheated degree DSHi – Discharge pipe superheat of inverter compressor DSHs – Discharge pipe superheat of standard compressor –...

  • Page 33: Operation Mode

    ESiEN09-06 A Function general Operation Mode Function...

  • Page 34: Basic Control

    Basic Control ESiEN09-06 A 2. Basic Control Normal Operation 2.1.1 List of Functions in Normal Operation Function of Functional Part (Electric Part Name Symbol Symbol) Normal Cooling Normal Heating PI control, High pressure PI control, High pressure protection, Low pressure protection, Low pressure Compressor (M1C, M2C)

  • Page 35: Compressor Pi Control

    ESiEN09-06 A Basic Control Compressor PI Control 2.2.1 For Z-Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation achieve target value (TeS).
  • Page 36 Basic Control ESiEN09-06 A Compressor Step Control Compressor operations vary with the following steps. Stand-alone installation ERQ 250 ERQ 200 ERQ 125 STEP STEP STEP STD1 52 Hz 52 Hz 52 Hz 56 Hz 56 Hz 56 Hz 62 Hz 62 Hz 62 Hz 68 Hz...

  • Page 37: Step Control Of Outdoor Unit Fans

    ESiEN09-06 A Basic Control Step Control of Outdoor Unit Fans Used to control the revolutions of outdoor unit fans in the steps listed in table below, according to condition changes. Fan revolutions (rpm) STEP ERQ 125 ERQ 200 ERQ 250 Cooling: 951 Cooling: 821 Heating: 941...

  • Page 38: Outdoor Unit Fan Control In Cooling Operation

    Basic Control ESiEN09-06 A Outdoor Unit Fan Control in Cooling Operation While in cooling operation, if the outdoor temperature is low, this mode provides high-pressure control using the outdoor unit fan to retain appropriate liquid pressure, thus ensuring refrigerant circulation rate to be supplied to AHU. Upper limit of fan revolutions: Step 8 Pc <...

  • Page 39: Special Control

    ESiEN09-06 A Special Control 3. Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 40: Oil Return Operation

    Special Control ESiEN09-06 A Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
  • Page 41 ESiEN09-06 A Special Control 3.2.2 Oil Return Operation in Heating Operation Oil return preparation Outdoor Unit Actuator Oil return operation Post-oil-return operation operation 124 Hz + OFF + OFF Compressor Upper limit control 176 Hz + ON + ON 2-steps increase/20sec. till Pc - Pe>0.4 MPa STEP7 Outdoor unit fan...

  • Page 42: Defrosting Operation

    Special Control ESiEN09-06 A Defrosting Operation To defrost the outdoor unit heat exchanger while in Evaporator, the defrost operation is conducted to recover the heating capacity. [Start conditions] Referring to the set conditions for the following items, start the defrosting operation. •...

  • Page 43: Pump-Down Residual Operation

    ESiEN09-06 A Special Control Pump-down Residual Operation 3.4.1 Pump-down Residual Operation in Cooling Operation If the liquid refrigerant stays in the Evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the Evaporator while the compressor stops, the pump-down residual operation is conducted.

  • Page 44: Standby

    Special Control ESiEN09-06 A Standby 3.5.1 Restart Standby Used to forcedly stop the compressor for a period of 3 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Actuator Operation Compressor Ta>30 C: STEP4 Outdoor unit fan...

  • Page 45: Stopping Operation

    ESiEN09-06 A Special Control Stopping Operation 3.6.1 When System is in Stop Mode (Normal operation stop) This mode is used to define actuator operations when the system stops. Actuator Operation Compressor Outdoor unit fan Four way valve Holds Main motorized valve (EV1) 0 pls Subcooling motorized valve (EV2) 0 pls...

  • Page 46: Protection Control

    Protection Control ESiEN09-06 A 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] [In heating operation] High pressure not limited...

  • Page 47: Low Pressure Protection Control

    ESiEN09-06 A Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] [In heating operation] Function...

  • Page 48: Discharge Pipe Protection Control

    Protection Control ESiEN09-06 A Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [INV compressor] [STD compressor] HTds : Value of STD compressor discharge pipe temperature ( Tds) compensated with outdoor air temperature Tp : Value of compressor port temperature...

  • Page 49: Inverter Protection Control

    ESiEN09-06 A Protection Control Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. [Inverter overcurrent protection control] [Inverter fin temperature control] Nomal operation Tfin>84˚C Tfin<81˚C...

  • Page 50: Std Compressor Overload Protection

    Protection Control ESiEN09-06 A STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON *If the power supply is reset while in operation prohibition mode, the prohibition Demand to operate.

  • Page 51: Other Control

    ESiEN09-06 A Other Control 5. Other Control Emergency Operation (only for ERQ 250 A7W1B) If the compressor cannot operate, this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit.
  • Page 52 Other Control ESiEN09-06 A 5.1.2 Principle [Set the system to operation prohibition mode by compressor] • In order to set an INV compressor to operation LED display ( :ON :OFF :Blink) prohibition mode, set No. 42 of Setting mode 2 to H1P----H7P "EMERGENCY OPERATION".

  • Page 53: Demand Operation

    ESiEN09-06 A Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adapter is required.

  • Page 54: Outline Of Control

    Outline of Control ESiEN09-06 A 6. Outline of Control Thermostat Sensor in Remote Control (only for Z- control) Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the AHU. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine...

  • Page 55: Hot Start Control (In Heating Operation Only)

    ESiEN09-06 A Outline of Control Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.

  • Page 56: Freeze Prevention

    Outline of Control ESiEN09-06 A Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the AHU heat Prevention by Off exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below. Cycle (AHU) Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min., or temperature is -5°C or less for total of 10 min.

  • Page 57: Low Outdoor Air Temperature Protection Control

    ESiEN09-06 A Outline of Control Low Outdoor Air Temperature Protection Control Objective In cooling (or fan operation) or heating, if outdoor air is low in temperature, stop the fan forcibly. Details [Cooling and fan operation] Turn OFF the fan for a period of 60 minutes at a suction temperature of 5 C or lower. In order to monitor the outdoor air temperature, however, turn ON the fan for a period of one minute and turn OFF the fan again at a temperature of 5 C or lower after the said timer completes the operative period.
  • Page 58 Outline of Control ESiEN09-06 A Function...
  • Page 59 ESiEN09-06 A 1. Different Systems with their Control Boxes...........50 1.1 System A: PAIR..................50 1.2 System B: MULTI ...................52 2. W-, X-, Y-, Z-Control ................55 2.1 W-Control ....................55 2.2 X-Control ....................57 2.3 Y-Control ....................58 2.4 Z-Control ....................58 3. Wiring Diagram of Control Box..............60 3.1 D-box......................60 3.2 F-box ......................61 4.

  • Page 60: Different Systems With Their Control Boxes

    Different Systems with their Control Boxes ESiEN09-06 A 1. Different Systems with their Control Boxes For steering a field supply AHU by an outdoor inverter heat pump, 2 systems can be used: System A: PAIR application (ERQ-outdoor) System B: MULTI application (VRV-outdoor) System A: PAIR System A = PAIR : ERQ + EXV-Kit EKEQDCB...
  • Page 61 ESiEN09-06 A Different Systems with their Control Boxes Control Box EKEQ - CBV3...

  • Page 62: System B: Multi

    Different Systems with their Control Boxes ESiEN09-06 A Allowable lengths and heights System A: EXV-kit Control Box (D or F - type) Allowable height: Total system: 30 m EXV-kit (outdoor unit can be above or below the AHU) outdoor Piping Communication depend on length: 5 <...
  • Page 63 ESiEN09-06 A Different Systems with their Control Boxes Control Box EKEQ - CBV3...
  • Page 64 Different Systems with their Control Boxes ESiEN09-06 A Allowable lengths and heights System B: EXV-kit Control Box H/P & VRV (M-type) KIT n Indoor 1 Indoor n Allowable height: AHU1 Total system: 40 m EXV-kit 1 (outdoor unit can be above 15 m AHU n or below the AHU)

  • Page 65: W-, X-, Y-, Z-Control

    ESiEN09-06 A W-, X-, Y-, Z-Control 2. W-, X-, Y-, Z-Control The D, F, M boxes have different types of control, giving the ability to control different temperatures (T or T Schematic: ROOM Legend: Discharge air control Suction air control Room air control Evaporating temperature control Condensing temperature control...
  • Page 66 W-, X-, Y-, Z-Control ESiEN09-06 A 2.1.1 Different steps The EKEQF control box will interpret the 0-10 V signal according to 5 steps. The correlation between the voltage output and the system capacity is shown in the table below. Voltage field during cooling during heating (†)

  • Page 67: X-Control

    ESiEN09-06 A W-, X-, Y-, Z-Control X-Control Control of refrigerant temperature by means of an external device (DDC controller, 0-10 V control). output 0~10 V measured T = T measured or T measured Components for control: DDC (field supply) Air thermistor (field supply) BRC1D (only for servicing) Possibility for T or T...

  • Page 68: Y-Control

    No air temperature control With Y-control, there is no external input to change T value. Their values can only be changed by local setup with a Daikin remote controller (during installation). We refer to the chapter “Field Setting” for further information. Z-Control...
  • Page 69 ESiEN09-06 A W-, X-, Y-, Z-Control Item Name User On/off button Customer Inspection/test operation button Installer Programming button Installer Schedule timer button Customer Time adjust buttons Customer Temperature adjust buttons Customer Operation change/min-max button Customer Setpoint/limit button Customer Fan speed button Customer Air flow direction adjust button Customer...

  • Page 70: Wiring Diagram Of Control Box

    Wiring Diagram of Control Box ESiEN09-06 A 3. Wiring Diagram of Control Box D-box Control Box EKEQ - CBV3...

  • Page 71: F-Box

    ESiEN09-06 A Wiring Diagram of Control Box F-box Control Box EKEQ - CBV3...

  • Page 72: Attention Points

    Attention Points ESiEN09-06 A 4. Attention Points Do not forget to place the capacity setting adaptor. Otherwise, you’ll get UA or PJ error. All capacity setting adaptors are delivered with the control box. Polarity of the C5/C6-contact (F-box, W- & X-control) C5 = ”-”, C6 = ”+” Control Box EKEQ - CBV3...

  • Page 73: System A: Ekeqf & Ekeqd-Box: Installation And Operation Manual

    ESiEN09-06 A System A: EKEQF & EKEQD-box: Installation and Operation Manual 5. System A: EKEQF & EKEQD-box: Installation and Operation Manual Control Box EKEQ - CBV3...
  • Page 74 INSTALLATION AND OPERATION MANUAL Option kit for combination of Daikin condensing units with field-supplied air handling units EKEQFCBAV3 EKEQDCBV3...
  • Page 75 11 8 X24A expansion valve liquid defrost remocon outdoor ON/OFF error operation 0-10 V C7 C8 R3 R4 R1 R2 C9 C10 P1 P2 F1 F2 T1 T2 C1 C2 C3 C4 C5 C6 0 +10 expansion valve liquid remocon outdoor ON/OFF R3 R4 R1 R2 R5 R6 P1 P2...
  • Page 76 expansion valve liquid remocon outdoor ON/OFF R3 R4 R1 R2 R5 R6 P1 P2 F1 F2 T1 T2 C1 C2 X24A...
  • Page 77 Installation and Option kit for combination of Daikin condensing units EKEQFCBAV3 operation manual EKEQDCBV3 with field supplied air handling units ONTENTS NTRODUCTION Page Introduction ............. 68 Do only use this system in combination with a field supplied air handling unit. Do not connect this system Installation ...............

  • Page 78: Installation

    The capacity class of the air handling unit is determined by the selection of the expansion valve kit according to Table 1. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 79 EKEXV kit (indication) EKEXV kit (indication) J224 J280 J112 J112 J140 J140 J160 J160 J224 J280 EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 80: Selecting The Installation Site

    Temper grade: use piping with temper grade in function of the pipe diameter as listed in the table below. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 81 (finish the connection with tape eventually). EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 82: Installation Of The Electrical Control Box

    Make sure that field wiring and insulation is not squeezed when closing the valve kit box cover. Close the valve kit box cover (4x M5). EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 83: Electric Wiring Work

    Incomplete connections could result in overheating, and in worse case electric shock or fire. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 84 RED ....Red X1M-R1/R2..Thermistor liquid WHT ....White X1M-R3/R4..Thermistor gas YLW ....Yellow X1M-Y1~6 ..Expansion valve EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 85 X1M-R3/R4 ..Thermistor gas X1M-R5/R6 ..Thermistor air X1M-T1/T2 ..Input: ON/OFF X1M-Y1~6 ..Expansion valve EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 86: Installation Of Thermistors

    Insulate the thermistor with the supplied insulation sheet. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 87: Test Operation

    Depending on operation conditions (e.g.: outdoor ambient temperature) it is possible that the settings must be changed after commissioning. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 88 10 V strongly increase temperatures: Suction air temperature of the air handling unit Room air temperature EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 89: Operation And Display Signals

    The combination of "Fan OFF during thermo OFF" and NOTE "Fan ON during defrost/oil return" will result in fan ON during thermo OFF. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 90: Troubleshooting

    Check if the heat source of the room is excessive. Cooling effect decreases if heat gain of the room is too large. EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 91 OTES EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...
  • Page 92 EKEQFCBAV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212-1 - 2014.08...

  • Page 93: System B: Ekeqm-Box: Installation And Operation Manual

    System B: EKEQM-box: Installation and Operation Manual ESiEN09-06 A 6. System B: EKEQM-box: Installation and Operation Manual Control Box EKEQ - CBV3...
  • Page 94 Kit de opciones para la combinación de unidades de condensación Daikin con unidades de tratamiento de aire suministradas Manuale di installazione e d'uso Kit opzioni per la combinazione di unità di condensazione Daikin con unità per il trattamento dell’aria non in dotazione Manual de instalação e de funcionamento Kit de opções para combinação de unidades de condensação Daikin...
  • Page 95 OTES expansion valve liquid remocon outdoor ON/OFF R3 R4 R1 R2 R5 R6 P1 P2 F1 F2 T1 T2 C1 C2 X24A...
  • Page 96 Installation and Option kit for combination of Daikin condensing units EKEQMCBV3 operation manual with field supplied air handling units ONTENTS NTRODUCTION Page Introduction ..............87 Do only use this system in combination with a field Before installation ................87 supplied air handling unit. Do not connect this system to other appliances.

  • Page 97: Before Installation

    Power supply and control wiring for air handling unit and controller (power supply is separate from the outdoor unit) Air thermistor control for air handling unit Remote controller EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 98: Selecting The Installation Site

    L is to be considered as a part of the total maximum piping length. See installation manual of the outdoor unit for piping installation. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...
  • Page 99 (field supply). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 100: Valve Kit Installation

    7. Make sure that there is no gap between both ends in order to avoid condensation dripping (finish the connection with tape eventually). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 101: Installation Of The Electrical Control Box

    The cables require an additional pull- relief. Strap the cable with the installed tie wrap. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...
  • Page 102 WHT ....White X1M-P1/P2 ..Communication remote controller YLW ....Yellow X1M-R1/R2..Thermistor liquid X1M-R3/R4..Thermistor gas X1M-R5/R6..Thermistor air X1M-T1/T2..Input: ON/OFF X1M-Y1~6 ..Expansion valve EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 103: Installation Of Thermistors

    For room temperature control the delivered thermistor (R1T) can be replaced by an optional remote sensor kit KRCS01-1(A) (to be ordered separately). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 104: Refrigerant Piping Work

    Confirm that the fan of the air handling unit is ON. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...

  • Page 105: Troubleshooting

    Check if the heat source of the room is excessive. Cooling effect decreases if heat gain of the room is too large. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units 4PW52447-1...
  • Page 106 ESiEN09-06 A 1. Test Operation ..................98 1.1 Installation Process ................98 1.2 Procedure and Outline ................99 1.3 Operation When Power is Turned On ..........112 2. Outdoor Unit PC Board Layout ............113 3. Field Setting ..................114 3.1 Field Setting from Remote Controller ...........114 3.2 Field Setting from Outdoor Unit............123 Test Operation...

  • Page 107: Test Operation

    Test Operation ESiEN09-06 A 1. Test Operation Installation Process Below Figure shows the installation process. Install in the order of the steps shown. Test Operation...

  • Page 108: Procedure And Outline

    ESiEN09-06 A Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.2.1 Check work prior to turn power supply on Test Operation...
  • Page 109 Test Operation ESiEN09-06 A 1.2.2 Turn power on Test Operation...
  • Page 110 ESiEN09-06 A Test Operation 1.2.3 Air Tight Test and Vacuum Drying Note: Always use nitrogen gas for the airtightness test. Absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed. (measuring after the shutoff valve is opened will cause the insulation value to drop.) 1.2.3.1 Preparations...
  • Page 111 Test Operation ESiEN09-06 A 1.2.3.2 Air Tight Test and Vacuum Drying Method After finished piping work, carry out air tight test and vacuum drying. <Air tight test> Pressurize the liquid and gas pipes to 4.0MPa (40bar) (do not pressurize more than 4.0MPa (40bar)).
  • Page 112 ESiEN09-06 A Test Operation [Shutoff Valve Operation Procedure] When operating the shutoff valve, follow the procedure instructed below. Note: Do not open the shutoff valve until “1.2.1 Check work prior to turn power supply on” in page 99 are completed. If the shutoff valve is left open without turning on the power, it may cause refrigerant to buildup in the compressor, leading insulation degradation.
  • Page 113 Test Operation ESiEN09-06 A 1.2.4.2 Procedure of Adding Refrigerant Charging and Check Operation Warning Electric Shock Warning Make sure to close the EL. COMPO. BOX lid before turning on the power when performing the refrigerant charging operation. Perform the setting on the PC-board (A1P) of the outdoor unit and check the LED display after the power is on via the inspection door which is in the EL.
  • Page 114 ESiEN09-06 A Test Operation 3. Open the valve C (See the figure 31. The valve A, B and the liquid and gas side shutout valve must be left closed), and charge the refrigerant of the “additional charging amount” from the liquid side shutout valve service port. If the “additional charging amount”...
  • Page 115 Test Operation ESiEN09-06 A [Refrigerant Charging Operation Procedure] STEP1 Open the liquid and gas side shutoff valves (The valve A~C must be closed. The valve A~C means the valves in the figure 33.) [Display of normal system] C/H SELECTOR SERV. MODE TEST/ L.N.O.P DEMA- MONI-...
  • Page 116 ESiEN09-06 A Test Operation NOTE: • For check operation, the following work will be performed. Check of shutoff valve opening Check of miswiring Judgment of piping length Check of refrigerant overcharge • It takes about 40 minutes to complete the check operation. [Check Operation Procedure] STEP1 Make the onsite setting as needed using the dip switches on the outdoor unit PC-board (A1P) with the power off...
  • Page 117 Test Operation ESiEN09-06 A [Remote controller displays malfunction code] Malfunction Installation error Remedial action code E3, E4 The shutoff valve of the outdoor F3, F6 Open the shutoff valve. unit is left closed. The phases of the power to the Exchange two of the three phases (L1, L2, L3) to outdoor unit is reversed.
  • Page 118 ESiEN09-06 A Test Operation 1.2.5 Onsite Settings 1.2.5.1 Onsite Settings with the Power Off If the COOL/HEAT selector was connected to the outdoor unit, set the dip switch (DS1) on the outdoor unit PC-board (A1P) to “ON” (it is set to “OFF” when shipped from the factory). For the position of the dip switch (DS1), see the “Service Precautions”...
  • Page 119 Test Operation ESiEN09-06 A 1.2.6 Test Run 1.2.6.1 Before Test Run • Make sure the following works are completed in accordance with the installation manual. Piping work Wiring work Air tight test Vacuum drying Additional refrigerant charge • Check that all work for the AHU is finished and there is no danger to operate. 1.2.6.2 Test Run After check operation is completed, operate the unit normally and check the following.
  • Page 120 ESiEN09-06 A Test Operation 1.2.6.3 Checks after Test Run Perform the following checks after the test run is complete. • Record the contents of field setting. Record them on the accessory “REQUEST FOR THE INDICATION” label. And attach the label on the back side of the front panel. •...

  • Page 121: Operation When Power Is Turned On

    Test Operation ESiEN09-06 A Operation When Power is Turned On 1.3.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address. Status Outdoor unit Test lamp H2P ..Blinks Can also be set during operation described above.

  • Page 122: Outdoor Unit Pc Board Layout

    ESiEN09-06 A Outdoor Unit PC Board Layout 2. Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P H7P H8P 1 2 3 4 1 2 3 4 (1) Microcomputer normal monitor (4) Local setting switch Connection terminal for transmission use...

  • Page 123: Field Setting

    Field Setting ESiEN09-06 A 3. Field Setting Field Setting from Remote Controller Individual function of AHU can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.

  • Page 124: Field Setting

    ESiEN09-06 A Field Setting 3.1.2 Simplified Remote Controller BRC2A51 BRC2C51 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON (2) (field set), and the FIELD SET MODE is entered. 3. Select the desired MODE No. with the [BS2] BUTTON (3) (temperature setting ) and the [BS3] BUTTON (3) (temperature setting 4.
  • Page 125 Field Setting ESiEN09-06 A 3.1.3 Field Settings - Overview Note : In the table below, the factory settings are indicated in bold. Mode Setting Contents Second Code n° Remark n° Renewal of target refrigerant control (X-control) (s) Number fanspeed BRC1D/E (10) Target superheat (cooling) (°C)
  • Page 126 ESiEN09-06 A Field Setting 3.1.4 Field Settings - Details (1) System Setting The ERQ is a heat pump but can be limited to “cooling only” or “heating only” by a setting. Mode n° Setting switch n° Setting position n° Setting 20 (10) Heat pump Cooling only...
  • Page 127 Field Setting ESiEN09-06 A (5) Thermostat Control (5.1) X-control Thermo off/on: When the DDC controller sends a voltage that is lower than 1,5 V, the unit stays thermostat off. When the voltage is bigger than 1,5 V, the unit goes thermostat on. (5.2) X-control Thermo off When the DDC controller maintains level A for more than B minutes, and the thermostat is on,...
  • Page 128 Setting switch n° Setting position n° Setting B (°C) C (min) (5.4) Z-control Standard Daikin thermostat on/off control. (6) Target Refrigerant Temperature Setting (6.1) W-control Cooling target: T zone - T pipe - T correction INITIAL VALUE BASE ON ZONE Adjustable by: T pipe = Tevapo - T coil AHU = at start 1,5°, T pipe = 0,5 ~ 11°C...
  • Page 129 Field Setting ESiEN09-06 A Heating target: INITIAL VALUE BASE ON ZONE Adjustable by: Correction field setting 21-2 (-1 ~ +2°C) W-control Setting Description Operation mode Correction target T 21-2 (6.2) X-control Cooling: Upper & lower limit of T can be chosen Mode n°...
  • Page 130 (°C) (°C) (6.3) Y-control Since there is no external input to change the T value, their values can only be changed by local setup by means of the Daikin remote controller (during installation). Cooling: T setting Heating: T setting Mode n° setting Setting switch n°...
  • Page 131 Field Setting ESiEN09-06 A For W-control: Mode n° setting Setting switch n° Setting position n° Setting 21 (11) A = 1 minute A = 3 minute A = 5 minute 3.1.5 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller.

  • Page 132: Field Setting From Outdoor Unit

    Setting of COOL/ (1) Control by each outdoor unit using the In order to use the COOL/HEAT selection HEAT selection Daikin remote controller remote controller, set the DS1-1 on the (*1) (2) Control by each outdoor unit using the outdoor unit PC board to OUT.

  • Page 133: Field Setting From Outdoor Unit

    Field Setting ESiEN09-06 A Setting item Content and objective of setting Overview of setting procedure AHU fan forced Used to operate the AHU in the stopped Set No. 5 of "Setting mode 2" to AHU operation state in forced operation mode. forced fan.
  • Page 134 ESiEN09-06 A Field Setting Setting by dip switches Using dip switches on the PC board enables field setting shown below. However, make no changes of factory settings except for DS1-1. Dipswitch Setting item Description Setting Cool / Heat select Used to set cool / heat select by Cool/Heat selector DS1-1 equipped with outdoor unit.
  • Page 135 Field Setting ESiEN09-06 A “Detail of DS1-1~4, DS2-1~4 setting” (for Overseas general) Unit Setting method ( represents the position of switches) HEAT PUMP(5HP) Set DS2-1 to ON. ERQ 125 HEAT PUMP(8HP) Set DS2-1 and DS2-3 to ON. ERQ 200 HEAT PUMP(10HP) Set DS2-1, DS2-2 and DS2-3 ERQ 250 to ON.
  • Page 136 ESiEN09-06 A Field Setting Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. LED display COOL/HEAT select Demand Multi TEST MODE noise MASTER SLAVE Single-outdoor-unit system (Factory setting) MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal): Used to select the cool/heat setting.
  • Page 137 Field Setting ESiEN09-06 A a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set).
  • Page 138 ESiEN09-06 A Field Setting Setting item Description b. “Setting mode 2” Used to make setting of contents to display on the digital Digital pressure pressure gauges (e.g. pressure sensors and temperature gauge kit display sensors) Push and hold the MODE (BS1) button for 5 seconds and set to Cool/heat unified Sets address for cool/heat unified operation.
  • Page 139 Field Setting ESiEN09-06 A Setting item Description Setting of difference Make the setting when the outdoor unit is installed 40 m in elevation for the or more below the AHU. outdoor unit Used to temporarily prohibit the applicable outdoor unit 38 Emergency from operating should there be any faulty part.
  • Page 140 ESiEN09-06 A Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave Factory set Address Binary number Digital pressure gauge kit display (4 digits) Address Binary number Cool / Heat Unified address (6 digits) Address Binary number...
  • Page 141 Field Setting ESiEN09-06 A Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave Factory set Level 1 (outdoor fan with 6 step or lower) 25 Low noise setting Level 2 (outdoor fan with 5 step or lower) Level 3 (outdoor fan with 4 step or lower) About 20:00 Night-time low noise...
  • Page 142 ESiEN09-06 A Field Setting c. Monitor mode LED display Setting item Data display H1P H2P To enter the monitor mode, push the Various settings Lower 4 digits MODE (BS1) button when in “Setting mode 1”. C/H unified address Low noise/demand address Not used Airnet address Lower 6 digits...
  • Page 143 Field Setting ESiEN09-06 A Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
  • Page 144 ESiEN09-06 A Field Setting 3.2.2 Cool / Heat Mode Switching There are the following 2 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by AHU remote controller (only for Z- control). Set cool/heat separately for each outdoor unit system by cool/heat selector (X, Y and Z- control).
  • Page 145 Field Setting ESiEN09-06 A Set Cool / Heat for Outdoor Unit System by Cool / Heat Selector Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1” (factory set). Test Operation...
  • Page 146 ESiEN09-06 A Field Setting 3.2.3 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise. Be aware that this setting may cause a slight capacity drop.
  • Page 147 Field Setting ESiEN09-06 A Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B Test Operation...
  • Page 148 ESiEN09-06 A Field Setting Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Condition Content...
  • Page 149 Field Setting ESiEN09-06 A Image of operation in the case of A Power consumption The power Rated power consumption consumption during 80 % of rated power consumption the demand level 1 Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing 70 % of rated power consumption instructing can be 60 % of rated power consumption...
  • Page 150 ESiEN09-06 A Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 151 Field Setting ESiEN09-06 A : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise /...
  • Page 152 ESiEN09-06 A Field Setting 3.2.4 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve. All unit operation is prohibited. [Operation procedure] In setting mode 2 with units in stop mode, set “Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 153 Field Setting ESiEN09-06 A 3.2.6 Check Operation Detail CHECK OPERATION FUNCTION (Press the MODE button BS1 once and set to SETTING MODE 1 (H1P: OFF)) LED display (H1P~H7P) ( BLINK) Unit stopping Press the TEST button for 5 seconds. Step 1 Pressure equalizing 10 sec to 10 minutes Step 2...

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