1. Manuals
  2. Brands
  3. Accorroni Manuals
  4. Inverter
  5. HPE R32 18
  6. Installation manual

Accorroni HPE R32 18 Installation Manual

Air / water inverter heat pumps with axial fans for production hot / cold and dhw
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Air / water inverter heat pumps
with axial fans for production
Hot / Cold and DHW
HPE R32 1
30
INVERTER

Advertisement

Table of Contents
loading

Related Manuals for Accorroni HPE R32 18

Summary of Contents for Accorroni HPE R32 18

  • Page 1 Air / water inverter heat pumps with axial fans for production Hot / Cold and DHW HPE R32 1 INVERTER...

  • Page 3: Table Of Contents

    CONTENTS Selecting a location in cold climates Selecting a location in hot climates Dimensions Installation requirements Drain hole position Servicing space requirements Application 1 Application 2 Application 3 Application 4 Application 5 Application 6 Disassembling the unit Main components Electronic control box Water piping Adding water Water piping insulation...
  • Page 4 Initial start-up at low outdoor ambient temperature 10.3 Pre-operation checks 10.4 Powering up the unit 10.5 10.6 Setting the pump speed 10.7 Field settings TEST RUN AND FINAL CHECKS Final checks 11.1 11.2 Test run operation (manually) MAINTENANCE AND SERVICE TROUBLE SHOOTING General guidelines 13.1...
  • Page 5 Wiring diagram: Electric Control System Terminal Block Hydraulic System Refrigerant System NOTE The picture and function described in this manual contain the backup heater components.
  • Page 6 1 SAFETY PRECAUTIONS The precautions listed here are divided into the following types.They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTE symbols. INFORMATION Read these instructions carefully before installation. Keep this manual in a handy for future peference. Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment.
  • Page 7 DANGER Before touching electric terminal parts, turn off power switch. When service panels are removed, live parts can be easily touched by accident. Never leave the unit unattended during installation or servicing when the service panel is removed. Do not touch water pipes during and immediately after operation as the pipes may be hot and could burn your hands.
  • Page 8 Do not install the unit in the following places: - Where there is mist of mineral oil, oil spray or vapors. Plastic parts may deteriorate, and cause them to come loose or water to leak. - Where corrosive gases (such as sulphurous acid gas) are produced. Where corrosion of copper pipes or soldered parts may cause refrigerant to leak.
  • Page 9 If you add the backup heater in the system, the backup heater can increase the heating capacity during cold outdoor tempera- Solar kit for domestic hot water tank(field supply) tures. The backup heater also serves as a backup in case of malfunctioning and for freeze protection of the outside water An optional solar kit can be connected to the unit.
  • Page 10 3 ACCESSORIES Accessories supplied with the unit Name Shape Quantity Name Shape Quantity Installation and owner’s Y-shape filter manual(this book) Water outlet connection pipe Operation manual assembly Technical data manual Wired controller Thermistor for domestic hot water Adapter for inlet water pipe tank or zone 2 water flow * Network matching wire** Extension wire for T5 or Tw2...

  • Page 12: Selecting A Location In Cold Climates

    Strong winds of 5 m/sec or more blowing against the unit's air outlet causes a short circuit (suction of discharge air), and this may have the following consequences: - Deterioration of the operational capacity. - Frequent frost acceleration in heating operation. - Disruption of operation due to rise of high pressure.

  • Page 13: Selecting A Location In Hot Climates

    6.2 Selecting a location in hot climates As the outdoor temperature is measured via the outdoor unit air thermistor, make sure to install the outdoor unit in the shade or a canopy should be constructed to avoild direct sunlight, so that it is not influenced by the sun’s heat, otherwise protection may be possible to the unit.

  • Page 14: Drain Hole Position

    7.3 Drain hole position Drain hole This drain hole is covered by rubber plug. If the small drain hole can not meet the drainage requirements, the big drain hole can be used at the same time. NOTE It's necessary to install an electrical heating belt if water can't drain out in cold weather even the big drain hole has opened.

  • Page 15: Application

    8 TYPICAL APPLICATIONS The application examples given below are for illustration only. 8.1 Application 1 Space heating with a room thermostat connected to the unit. ---- FHL1 FHL2 ---- FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Manometer Pressure relief valve Expansion vessel Plate heat exchanger Air purge valve...

  • Page 16: Application

    NOTE Make sure to connect the thermostat wires to the correct terminals, method B should be selected (see "For room thermostat" in 9.7.6 connection for other components). To correctly configure the ROOM THERMOSTAT in the FOR SERVICEMAN mode see 10.7 Field settings/ROOM THERMOSTAT. 8.2 Application 2 Space heating without room thermostat connected to the unit.

  • Page 17: Application

    Circulation pump operation The circulation pump (1.7) and (10) will operate as long as the unit is on for space heating. The circulation pump (1.7) will operate as long as the unit is on for heating domestic hot water (DHW). Space heating 1) The unit (1) will operate to achieve the target water flow temperature set on the wired controller.

  • Page 18: Application

    Coding Assembly unit Coding Assembly unit Outdoor unit Manometer Collector / distributor Pressure relief valve Expansion vessel 12.1 Air purge valve Plate heat exchanger 12.2 Heat exchanger coil Air purge valve Booster heater 12.3 Flow switch T5: temperature sensor P_i: Circulation pump inside the unit Wired controller Air purge valve FHL 1…n...
  • Page 19 CAUTION Be sure that the boiler and the integration of the boiler in the system is in accordance with relevant local laws and regula- tions. 8.4.1 Application a Boiler provide heat for space heating only 12.1 12.3 12.2 ---- FHL1 FHL2 ---- FHLn...

  • Page 20: Application

    8.4.3 Application c Boiler provide heat for domestic water heating. The ON/OFF of boiler controlled by unit. 12.1 12.3 12.2 ---- ---- FHL1 FHL2 FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Manometer Pressure relief valve Collector / distributor Expansion vessel Plate heat exchanger 12.1...

  • Page 21: Application

    During heating operation of the unit, the unit will operate to achieve the target water flow temperature set on the user interface. When weather dependent operation is active, the water temperature is determined automatically depending on the outdoor temperature. During heating operation of the boiler, the boiler will operate to achieve the target water flow temperature set on the user interface.
  • Page 22 Coding Assembly unit Coding Assembly unit Outdoor unit Manometer Pressure relief valve Air purge valve Expansion vessel Drain valve Plate heat exchanger Air purge valve Collector / distributor Flow switch P_i: Circulation pump in the unit 23.1 P_c: zone 2 pump (field supply) SV3: 3-way valve (field supply) Wired controller 23.2...
  • Page 23 The operation and configuration of the field water circuit is the responsibility of the installer. We only offer a dual set point control function. This function allows two set points to be generated. Depending on the required water temperature (floor heating loops and/or fan coil units are required) the first set point or second set point can be activated.

  • Page 24: Disassembling The Unit

    9 OVERVIEW OF THE UNIT 9.1 Disassembling the unit Door 1 To access to the compressor and electrical parts and hydraulic compartment WARNING Switch off all power — i.e. unit power supply — before removing doors 1 . Parts inside the unit may be hot. Push the grill to the left until it stops, then pull its right edge, so you can removed the grill.
  • Page 25 9.2.2 Hydraulic system diagram 12.2 Tw_in 12.1 Tw_out Coding Assembly unit Explaination Remaining air in the water circuit will be automatically removes Air purge valve air from the water circuit. Expansion vessel Balances water system pressure. (Expansion vessel volume: 8L) Circulation pump Circulates water in the water circuit.

  • Page 26: Electronic Control Box

    9.3 Electronic control box Main control board of unit (PCB B) Inverter module (PCB A) Main control board of hydraulic module Inverter module Filter board （PCB A） （PCB C） Note:The picture is for reference only, please refer to the actual product.
  • Page 27 9.3.1 Main control board of indoor unit Order Port Code Assembly unit Order Port Code Assembly unit M1 M2 POWER Port for remote switch CN21 Port for power supply CN36 Port for temperature board T1 T2 Rotary dip switch Communicate port between indoor PCB and DIS1 Digital display CN19...
  • Page 28 9.3.2 Inverter module Assembly unit Coding Output port for +15V(CN20) Port for communication with PCB B (CN8) Compressor connection port W Compressor connection port V Compressor connection port U Input port P_out for IPM module Input port P_in for IPM module Input port for high pressure switch (CN23) Power for switching power supply(CN2) PED board...
  • Page 29 9.3.3 Main control board of unit V i n Coding Assembly unit Coding Assembly unit Power supply port for PCB B(CN41) Power supply port for hydro-box control board(CN21) Port for IC programming(CN11) Port for other temp.sensor(CN35) Port for pressure sensor(CN6) Port for communication XYE(CN28) Port for suction temp.sensor(CN5) Port for 4-way val e(CN18)
  • Page 30 9.3.3 Filter board PCB C Coding Assembly unit Coding Assembly unit Power supply L3(L3) Power supply port for main control board(CN30) Power supply L2(L2) Power supply L1(L1) Power supply N(N) Ground wire(PE1) Port for communication with PCB B (CN8) Power for PCB A switching power supply(CN214) Power supply port for DC fan(CN212) supply...

  • Page 31: Water Piping

    9.4 Water piping All piping lengths and distances have been taken into consideration. Requirements Valve The maximum allowed thermistor cable length is 20m. This is the maximum allowable distance between the domestic hot water tank and the unit (only for installations with a domestic hot water tank).The thermistor cable supplied with Thermistor cable length minus 2m the domestic hot water tank is 10m in length.In order to optimize efficiency we...
  • Page 32 Before continuing installation of the unit, check the following: Always use materials that are compatible with the water used in the system and with the materials used in the unit. Ensure that components installed in the field piping can withstand the water pressure and temperature. Drain taps must be provided at all low points of the system to permit complete drainage of the circuit during maintenance.
  • Page 33 Determine the calculated pre-pressure (Pg) for the calculate the pre-pressure of the expansion vessel: corresponding maximum water volume using the Pg(bar)=(H(m)/10+0.3) bar graph below. the expansion vessel equipped in the unit should adjust the pre- pressure also. Check that the total water volume in the entire water circuit is lower than this value.
  • Page 34 9.4.4 Water circuit anti-freeze protection WARNING Ice formation can cause damage to the hydraulic system. Due to the presence of glycol, corrosion of the system is As the outdoor unit may be exposed to sub-zero possible. Uninhibited glycol will turn acidic under the temperatures, care must be taken to prevent freezing of influence of oxygen.

  • Page 35: Adding Water

    INFORMATION 2. Freeze protection by freeze protection valves About freeze protection valves the piping from bursting, but NOT the liquid inside the When no glycol is added to the water, you can use piping from freezing. freeze protection valves to drain the water from the system before it can freeze.

  • Page 36: Water Piping Insulation

    NOTE During filling, it might not be possible to remove all air in the system. Remaining air will be removed through the automatic air purge valves during the first operating hours of the system. Topping up the water afterwards might be required.
  • Page 37 Coding Assembly unit Coding Assembly unit Outdoor unit P_d: DHW pump (field supply) Solar energy kit (field supply) SV2: 3-way valve (field supply) SV1: 3-way valve for domestic hot User interface water tank (field supply) Room thermostat (field supply) Domestic hot water tank Boiler (field supply) Booster heater P_s: Solar pump (field supply)
  • Page 38 NOTE Please use H07RN-F for the power wire, all the cable are connected to high voltage except for thermistor cable and cable for user interface. Equipment must be grounded. All high-voltage external load, if it is metal or a grounded port, must be grounded. All external load current is needed less than 0.2A, if the single load current is greater than 0.2A, the load must be controlled through AC contactor.
  • Page 39 9.7.4 Specifications of standard wiring components Door 1: compressor compartment and electrical parts: XT1 BLACK BLACK BROWN BROWN GRAY GRAY BLUE BLUE OUT OOR UNIT POWER SUPPLY 19kW 22kW 30kW Unit Maximum overcurrent protector(MOP) Wiring size(mm Stated values are maximum values (see electrical data for exact values). POWER SUPPLY NOTE 380VAC~3N...
  • Page 40 Port provide the control signal to the load.Two kind of control signal port: Type 1：Dry connector without voltage. Type 2：Port provide the signal with 220V voltage. If the current of load is <0.2A, load can connect to the port directly. Power supply Type 1: Type 2:...
  • Page 41 Room thermostat type1(RT1)(High voltage): “POWER IN” provide the working voltage to the RT, doesn’t provide the voltage to the RT connector directly. Port “15 L1” provide the 220V voltage to the RT connector. Port “15 L1” connect from the unit main power supply port L of 1- phase power supply, L2 port of 3-phase power supply.
  • Page 42 3) For 3-way value SV3 3OFF 1OFF 2OFF Voltage 220-240VAC Maximum running current(A) Wiring size(mm 0.75 Control port signal type Type 2 NOTE Wiring of the 3-way valve is different for NC(normal close) and NO (normal open). Before wiring, read the Installation &...
  • Page 43 6) For external backup heater kit (optional) Voltage 220-240VAC IBH1 Maximum running current(A) IBH1 Wiring size(mm 0.75 CONTROL SIGNAL Control port signal type OUTPUT Type 2 7) For antifreeze e-heating tape (external) Voltage 220-240VAC Maximum running current(A) Heating Wiring size(mm 0.75 CONTROL SIGNAL Control port signal type...
  • Page 44 Wire type 5 wire shielded cable NOTE Wire section(mm 0.75~1.25 This equipment supports MODBUS communication protocol. Maximum wire length(m) As described above, during wiring, port A in the unit terminal XT6 corresponds to port A in the user interface. Port B corresponds to port B.

  • Page 45: Climate Related Curves

    10 START-UP AND CONFIGURATION The unit should be configured by the installer to match the installation environment (outdoor climate, installed options, etc.) and user expertise. CAUTION It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable.

  • Page 46: Dip Switch Settings Overview

    3.The automatic setting curve for heating mode The automatic setting curve is the ninth curve,the ninth curve can be set as following: T1S (T1S2) T1SETH1 T1SETH2 T4H1 T4H2 State:In the setting the wired controller, if T4H2<T4H1, then exchange their value; if T1SETH1<T1SETH2, then exchange their value.

  • Page 47: Initial Start-Up At Low Outdoor Ambient Temperature

    WARNING Switch off the power supply before opening the switch box service panel and making any changes to the DIP switch settings. Operate the switches with an insulated stick (such as a closed ball-point pen) to avoid electrost c damage to the components.

  • Page 48: Powering Up The Unit

    10.5 Powering up the unit When power to the unit is turned on, "1%~99%" is displayed on the user interface during initialization. During this process the user interface cannot be operated. 10.6 Setting the pump speed The pump speed can be selected by adjusting the red knob on the pump. The notch point indicates pump speed.
  • Page 49 Code no. Fault Cause Remedy Mains undervoltage Power supply too low on mains Check mains voltage. side Mains overvoltage Power supply too high on Check mains voltage. mains side The pump is driven in reverse Check flow, install non-return Turbine operation (the fluid flows through the valves if necessary pump from the pressure to the...

  • Page 50: Field Settings

    10.7 Field settings The unit shall be configured by the installer to match the installation environment (outdoor climate, installed options, etc.) and user demand. A number of field settings are available. These settings are accessible and programmable through “FOR SERVICEMAN” in user interface. Powering on the unit When power on the unit, "1%~99%"...
  • Page 51 10.7.1 DHW MODE SETTING 2 COOL MODE SETTING 2.11 T4C2 25°C DHW = domestic hot water 2.12 ZONE1 C-EMISSION Go to MENU> FOR SERVICEMAN> 1.DHW MODE 2.13 ZONE2 C-EMISSION SETTING. Press OK. The following pages will be displayed: DHW MODE SETTING ADJUST 1.1 DHW MODE 10.7.3 HEAT MODE SETTING...
  • Page 52 If you only set WATER FLOW TEMP. to YES, or only set ROOM TEMP. to YES, The following pages will be displayed. only WATER FLOW TEMP. YES only ROOM TEMP. YES If you set WATER FLOW TEMP. and ROOM TEMP. to YES, meanwhile set DOUBLE ZONE to NON or YES, the following pages will be displayed.
  • Page 53 10.7.6 ROOM THERMOSTAT 10.7.8 HOLIDAY AWAY SETTING About ROOM THERMOSTAT The HOLIDAY AWAY SETTING is used to set the outlet water temperature to prevent freezing when away for The ROOM THERMOSTAT is used to set whether the holiday. room thermostat is available. Go to MENU>...
  • Page 54 10.7.10 RESTORE FACTORY SETTINGS If YES is selected, the following pages will be displayed: 11 TEST RUN The RESTORE FACTORY SETTING is used to restore 11.1 POINT CHECK all the parameters set in the user interface to the factory 11.2 AIR PURGE setting.
  • Page 55 When in air purge mode, the 3-way valve will open, the During HEAT MODE test running, the default target outlet 2-way valve will close. 60s later the pump in the unit water temperature is 35°C. The IBH (internal backup (PUMPI) will operate for 10min during which the flow heater) will turn on after the compressor runs for 10 min.
  • Page 56 Go to MENU> FOR SERVICEMAN> 12.SPECIAL FUNC- During preheating for floor, all the buttons except OK are TION. invalid. If you want to turn off the preheating for floor, please press OK. Before floor heating, if a large amount of water remains on the floor, the floor may be warped or even rupture during The following page will be displayed: floor heating operation, in order to protect the floor, floor...
  • Page 57 When the cursor is on OPERATE FLOOR DRYING,use Go to MENU> FOR SERVICEMAN>13.AUTO RESTART to scroll to YES and press OK. The following page will be displayed: 13 AUTO RESTART 12.2 FLOOR DRYING UP 13.1 COOL/HEAT MODE DO YOU WANT TO TURN OFF THE 13.2 DHW MODE FLOOR DRYING UP FUNCTION? ADJUST...
  • Page 58 10.7.16 Setting parameters The parameters related to this chapter are shown in the table below. Setting Order number Code State Default Minumum Maximum Unit interval DHW MODE Enable or disable the DHW mode:0=NON,1=YES DISINFECT Enable or disable the disinfect mode:0=NON,1=YES DHW PRIORITY Enable or disable the DHW priority mode:0=NON,1=YES DHW PUMP...
  • Page 59 HEAT MODE Enable or disable the heating mode The refresh time of climate related curves for heating t_T4_FRESH_H hours mode The maximum ambient operating temperature for heating T4HMAX mode The minimum ambient operating temperature for heating T4HMIN mode dT1SH The temperature difference for starting the unit (T1) dTSH The temperature difference for starting the unit (Ta) The setting temperature 1 of climate related curves for...
  • Page 60 12.4 t_DRYUP The day for w arming up during floor drying up The continue days in high temperature during floor 12.5 t_HIGHPEAK drying up The day of dropping temperature during floor drying 12.6 t_DRYD The target peak temperature of w ater flow during 12.7 T_DRYPEAK °C...

  • Page 61: Test Run And Final Checks

    11 TEST RUN AND FINAL The following checks must be performed at least once a year by qualified person. CHECKS Water pressure Check the water pressure, if it is below 1 bar,fill water The installer is obliged to verify correct operation of unit to the system.

  • Page 62: Trouble Shooting

    13 TROUBLE SHOOTING This section provides useful information for diagnosing and correcting certain troubles which may occur in the unit. This troubleshooting and related corrective actions may only be carried out by your local technician. 13.1 General guidelines Before starting the troubleshooting procedure, carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring.
  • Page 63 Symptom 3: Pump is making noise (cavitation) POSSIBLE CAUSES CORRECTIVE ACTION There is air in the system. Purge air. The water pressure must be > 1 bar (water is cold). Water pressure at pump inlet is too low. vessel is correct (refer to "9.3 ater piping/Checking the water volume and expansion vessel pre-pressure").

  • Page 64: Operation Parameter

    Symptom 8: DHW mode can’t change to Heat mode immediately POSSIBLE CAUSES CORRECTIVE ACTION 60min. Heat exchanger for space connect it to the unit. heating not big enough flow. Space heating load is small Normal , no need for heating Disinfect function is enabled but without TBH Manual turn on the FAST WATER...

  • Page 65: Error Codes

    OPERATION PARAMETER OPERATION PARAMETER OPERATION PARAMETER T3 OUTDOOR EXCHARGE TEMP. 5°C FAN SPEED 600R/MIN TW_O PLATE W-OUTLET TEMP. 35°C T4 OUTDOOR AIR TEMP. 5°C IDU TARGET FREQUENCY 46Hz TW_I PLATE W-INLET TEMP. 30°C TF MODULE TEMP. 55°C FREQUENCY LIMITED TYPE T2 PLATE F-OUT TEMP.
  • Page 66 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. Check the resistance of the sensor The condenser outlet 2. The T3 sensor connector is loosen. Reconnect it. 3.The T3 sensor connector is wet or there is water in. remove refrigerant temperature sensor the water, make the connector dry.
  • Page 67 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1.Check the resistance of the sensor. 2.The Tbt12 sensor connector is loosen,reconnect it. The balance tank low 3.The Tbt2 sensor connector is wet or there is water in,remove temp.sensor(Tbt2) fault the water ,make the connector dry.Add waterproof adhesive.
  • Page 68 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1.wire doesn’t connect between main control board PCB B and main control board of indoor unit. connect the wire. Communication fault between main control board of hydraulic 2. Whether there is a high magnetic field or high power interfere, such module and main control board PCB B.
  • Page 69 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1.Check the resistance of the sensor. 2. The Tw2 sensor connector is loosen. Reconnect it. Zone 2 water flow temp. sensor 3.The Tw2 sensor connector is wet or there is water in. (Tw2) fault.
  • Page 70 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION Heating mode, DHW mode: The water flow is low; water temp is high, whether there is air in the water system. Release the air. Water pressure is lower than 0.1Mpa, charge the water to let the pressure in the range of 0.15~0.2Mpa.
  • Page 71 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. Power supply voltage of the unit is low, increase the power voltage to the required range. 2. The space between the units is too narrow for heat exchange. Increase the space between the units. 3.
  • Page 72 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION DC compressor inverter module fault DC bus low voltage protection (from inverter module mostly when compressor running) DC bus high voltage protection 1. Check the Heat pump system pressure; from DC driver 2.

  • Page 73: Technical Specifications

    14 TECHNICAL SPECIFICATIONS 22kW Unit 380-415V 3N～50Hz Power supply 10.6kW 12.5kW 14.5W Rated input 16.8A 22.8A 19.6A Rated Current Refer to the technical data Norminal capacity 1129x1558x440 Dimensions (W×H×D)[mm] 1220x1735x565 Packing (W×H×D)[mm] Plate heat exchanger Heat exchanger Electric heater 3.5L Internal water volume 0.3MPa Safety valve...

  • Page 74: Information Servicing

    15 INFORMATION SERVICING 1) Checks to the area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minmised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
  • Page 75 b) Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.
  • Page 76 Extreme care shall be taken not to overfill the refrigeration system. Prior to recharging the system it shall be pressure tested with OFN. The system shall be leak tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site. 17) Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail.
  • Page 77 ANNEX A: Refrigerant cycle ANNEX A: Refrigerant cycle Cooling Heating Description Description Description Description Item Item Item Item Refrigerant inlet (liquid pipe) temp. sensor Refrigerant inlet (liquid pipe) temp. sensor Compressor Compressor Refrigerant outlet (gas pipe) temp. sensor Refrigerant outlet (gas pipe) temp. sensor 4-Way Valve 4-Way Valve Water outlet temp.
  • Page 78 Annex B: Electrically controlled wiring diagram...
  • Page 80 A2B Accorroni E.G. s.r.l. Via d’Ancona, 37 - 60027 Osimo (An) - Tel. 071.723991 web site: www.accorroni.it - e-mail: a2b@accorroni.it...

This manual is also suitable for:

Hpe r32 22Hpe r32 30

Table of Contents