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Related Manuals for A2B Accorroni HPE Series
Summary of Contents for A2B Accorroni HPE Series
- Page 1 Chillers and inverter air/water heat pumps with axial fans HPE 06÷15 INVERTER...
- Page 2 03 09‐2013 A.M. G.M. 02 07‐2013 D.P. G.M. 01 05‐2013 D.P. G.M. 00 05‐2013 D.P. G.M. Rev Date Author Supervisor Serie / Series / Serie / Serie / Série Catalogo / Catalogue / Katalog / Catalogue USER’S AND INSTALLER’S MANUAL FOR CHILLERS AND INVERTER MUI14124D5820‐03 AIR/WATER HEAT PUMPS WITH AXIAL FANS Possible wasted electrical or electronic devices/products should not be located together with normal domestic waste, but disposed according to the current WEEE law in compliance with the European Directive 2002/96/EC and following modifications 2003/108/EC. Please inform yourself at your local Administration or at your reseller in case the product will be replaced with a similar one. ...
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Page 3: Table Of Contents
INDEX AIM AND CONTENTS OF THIS MANUAL ..........................5 KEEP THIS MANUAL ..............................5 GRAPHIC SYMBOLS................................. 5 SAFETY LAWS ..................................5 PERMITTED USES................................5 GENERAL SAFETY GUIDELINES ............................6 WORKERS’ HEALTH SAFETY ............................ - Page 4 9.12 AUXILIARY ELECTRIC HEATERS OF THE SYSTEM ........................21 9.13 AUXILIARY ELECTRIC HEATER OF SANITARY WATER ......................21 9.14 SELECTION MODE OF AUXILIRY ELECTRIC HEATERS ......................21 9.15 ACTIVATION OF THE AUXILIARY ELECTRIC HEATERS DURING THE JOINT/IN SUBSTITUTION OPERATION TO THE COMPRESSOR ....................................
- Page 5 CR REMOTE KEYBOARD (OPTIONAL ACCESSORY) ........................37 21.1 CONNECTION OF THE CRH KEYBOARD TO THE MINICHILLER ....................37 DOUBLE SET‐POINT KIT (OPTIONAL ACCESSORY) ........................37 22.1 PURPOSE AND SCOPE ................................37 22.2 PARTS AND TECHNICAL CHARACTERISTICS OF THE KIT ......................37 22.3 FUNCTIONS OF HUMIDISTAT ..............................
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Page 6: Aim And Contents Of This Manual
1 AIM AND CONTENTS OF THIS MANUAL This manual provides basic information as for the installation, the operation and the maintenance of the N‐i‐HWAK/WP V2/V2+ units. It is addressed to machine operators and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge of it. This manual describes the characteristics of the equipment at the time it is being put on the market; therefore, it may not capture later technological improvements introduced by A2B Accorroni E.G. as part of its constant endeavour to enhance the performance, ergonomics, safety and functionality of its products. A2B Accorroni E.G., therefore, is not constrained to update the manuals for previous versions of machines. It’s recommended that, the user must follow the instructions contained in this booklet, especially those concerning the safety and routine maintenance. 1.1 HOW TO KEEP THIS MANUAL The manual has to be always kept with the unit it refers to. It has to be stored in a safe place, away from the dust and moisture. It ... -
Page 7: General Safety Guidelines
4 GENERAL SAFETY GUIDELINES Before beginning to operate on HPE units every user has to be perfectly knowledgeable about the functions of the equipment and its controls and has to have read and understood the information listed in this manual. It’s strictly forbidden to remove and/or tamper with any safety device. Children or unassisted disabled persons are not allowed to use the appliance. Do not touch the appliance when barefoot or parts of the body are wet or damp. Do not pull, remove or twist the electrical cables coming out from the unit, even if it is disconnected from the main power supply. Do not step with your feet on the appliance, sit down and/or place any type of object. Do not spray or pour water directly on the unit. Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags, etc) as they may represent a hazard. Any routine or not‐routine maintenance operation shall be carried out when the equipment has been shut down, disconnected from electric power sources. Do not put neither your hands nor insert screwdrivers, spanners or other tools into moving parts of the equipment. The equipment supervisor and the maintenance man has to receive suitable training for the performance of their tasks in safety. ... -
Page 8: Refrigerant Safety Data Sheet
4.4 REFRIGERANT SAFETY DATA SHEET Name: R410A (50% Difluoromethane (R32); 50% Pentafluoroethane (R125). RISKS INDICATIONS Major risks: Asphyxia Specific risks: The rapid evaporation may cause freezing. FIRST AID General informations: Never give anything by mouth to an unconscious person. Inhalation: Move to fresh air. Oxygen or artificial respiration if necessary. Do not administer adrenaline or similar drugs. Eyes contact: Rinse carefully with water for at least 15 minutes and consult a doctor. Contact with skin: Wash immediately with plenty of water. Take off immediately the contaminated clothing. FIRE PREVENTION Extinguishing Media: Whatever. Specific risks: Increase in pressure. Specific methods: Use water spray to cool containers ACCIDENTAL RELEASE ACTIONS Personal precautions: Evacuate personnel to safe areas. Provide adequate ventilation. Use personal protective equipment. Environmental precautions: Evaporate. Cleaning method: Evaporate. HANDLING AND STORAGE Manipulation Action/technical precautions: Provide sufficient air exchange and/or suction in work places. ... -
Page 9: Technical Characteristics
5 TECHNICAL CHARACTERISTICS The HPE water chillers and heat pumps series are designed for applications in residential and commercial areas, These units are extremely versatile and can operate in heat pump mode with the ability of producing hot water at a temperature of 55°C for environmental heating and sanitary applications. The INVERTER compressor with brushless DC motor technology, matched with ... -
Page 10: Monitoring And Protection Devices
WARNING: All the operation described in next chapters MUST BE DONE BY TRAINED PEOPLE ONLY. Before any operation on the unit, be sure that the electric supply is disconnected. 7.1 GENERALITY When installing or servicing the unit, it is necessary to strictly follow the rules listed in this manual, to conform to all the specifications of the labels on the unit, and to take any possible precautions. Not observing the rules reported on this manual can create dangerous situations. After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any eventual damage has to be questioned to the carrier and recorded on the Delivery Note before signing it. A2B Accorroni E.G. has to be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of any severe damage. ... -
Page 11: Lifting And Handling
7.2 LIFTING AND HANDLING When unloading and installing the unit, it is highly recommended to avoid any sudden move in order to protect the inner components. Units can be lifted by means of a forklift or, in alternative, of belts, being sure not to damage the lateral panels and the cover. It is important to keep the unit horizontal during these operations. 7.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES The all HPE units are designed for outdoor installation: any cover over the unit and location near trees (even if they partially cover the unit) has to be avoided in order to prevent air recirculation. It is advisable to create a proper basement, with a size similar to unit foot‐print. Unit vibration level is very low: it is advisable however, to fit a rigid rubber band between basement and unit base‐ frame. It is also possible to install anti‐vibration supports (springs or rubbers) to keep vibrations at a very low level. Absolute care has to be taken to ensure adequate air volume to the condenser. Re‐circulation of discharge air has to be avoided; failure to observe ... -
Page 12: Service Valve
Drainage pipe fitting Drainage pipe fitting housing Drainage pipe fitting connected to the unit Each unit is also provided, on the basement of the hydronic kit (accessible from the right sides panels), with a hole that can allow to drain any condensation that may escape from plumbing pipes. As well as the pipes are well‐insulated, the production of condensate is however very low and therefore the connection of a drainage pipe to that hole is not required. 7.4.2 Service valve You can use the service valve, when it is necessary to refill the plant or adapt the concentration of glycol. Unscrew the cap of the service valve and connect to the hose a pipe of 14 mm (inner diameter) connected to the water network, and then load the system by unscrewing the knurled nut. When the operation is concluded, retighten the knurled nut and screw on the cap. ... -
Page 13: Refrigerant Diagram
7.5 Refrigerant diagram C COMPRESSOR CLS COMPRESSOR LIQUID SEPARATOR OS OIL SEPARATOR (only for the models 12 e 15) ST COMPRESSOR INLET TEMPERATURE DT COMPRESSOR OUTLET TEMPERATURE HP HIGH PRESSURE TRANSDUCER Pr HIGH PRESSURE FLOW SWITCH LP LOW PRESSURE TRANSDUCER LS LIQUID SEPARATOR (only for models 09, 12 and 15) 4WV VALVE FO INVERTING CYCLE LR LIQUID RECEIVER EEV ELECTRONIC EXPANSION VALVE NRV NO RETURN VALVE (available only for some models) FL FILTER M AXIAL FAN SE OUTDOOR AIR TEMPERATURE P CIRCULATOR ON BOARD UNIT IN WATER INLET TEMPERATURE OUT WATER OUTLET TEMPERATURE WARNING: The unit should be installed so that adequate clearance is available for maintenance and repairation. The ... - Page 14 The connections indicated below are standard. Other connections are shown in the table see paragraph 9.17. Terminal Type Connection Connect the grounding wire Connect the power supply neutral wire; Connect thepower supply phase wire; (note that, in the three‐phases versions there are two other terminals, L2 and L3) Power supply NC terminal (230V AC) for 3‐way valve for sanitary hot water boiler (used only for 3‐way valve with 3 contacts for power supply NC1 Digital output with changeover contact connection to switching‐over to the plant side) (for further configuration settings, please check the Paragraph 9.17) Power supply neutral terminal (230V AC) for 3‐way valve for sanitary hot water boiler (for further configuration settings, please refer to Paragraph N Digital output with changeover contact 9.17) Power supply NO terminal (230V AC) for 3‐way valve for sanitary hot NO1 Digital output with changeover contact water boiler (to switch‐over the valve to the boiller side) (for further configuration settings, please refer to Paragraph 9.17) Power supply NC terminal (230V, 50Hz, 5A resistive, 1 A inductive) for 3‐ way double set point valve for radiant panels. (optional, to use only on NC2 Digital output with changeover contact V2 series, see paragraph 21) (for further configuration settings, please refer to Paragraph 9.17) Power supply neutral terminal (230V AC) for 3‐way double set point N2 Digital output with changeover contact valve for radiant panels (optional, to use only on V2 series, see paragraph 21.) (for further configuration settings, please refer to Paragraph 9.17) Power supply NO terminal (230V, 50Hz, 5A resistives, 1 A inductives) 3‐ way valve double set point for radiant panels (optional, to use only on V2 NO2 Digital output with changeover contact series, see paragraph 21.) (for further configuration settings, please refer to Paragraph 9.17) ...
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Page 15: Start Up
summer/open = winter) onoff Digital input Remote on‐off terminal (closed = unit ON/open = unit OFF) onoff Digital input Remote on‐off terminal (closed = unit ON/open = unit OFF) 0‐10V+ Analog input (ST10) Input signal 0‐10V (+) for set point adjustment 0‐10V‐ Analog input (ST10) Input signal 0‐10V (‐) for set point adjustment 8 START UP Before start‐up: • Check out the availability of the supplied wiring diagrams and manuals of installed apparatus. • Check out the availability of the electrical and hydraulic diagrams of the plant in which the unit is installed. • Check that the shut‐off valves of the hydraulic circuits are open. • Verify that the hydraulic circuit has been charged under pressure and air vented. • Check out that all water connections are properly installed and all indications on unit labels are observed. • Ensure that arrangements have been provided to drain the condensate. • Check out that all power cables are properly connected and all terminals are hardly fixed. • Check that electrical connections are carried out according to the norms in force including grounding. • Check out that the voltage is the one shown in the unit labels. • Make sure the voltage is within the limits (± 10%) of tolerance range. • Check out that crankcase heaters are powered correctly. • Check out that there is no refrigerant leakage. •... -
Page 16: User - Control Interface
9 USER ‐ CONTROL INTERFACE It is used to select the operating mode, and to reset the manual resetting alarms. The operating mode changes as per the sequence below each time you press the Mode button: cool heat If the sanitary mode is enabled, the sequence is as follows: off cool cool+san heat heat+san off During the parameters’ setting, this button can be used to revert BACK to the previous level. It allows you to enter into the setting menu parameters and to select the cool/summer, heat/winter and sanitary water set point value. UP button: In the setting mode, this button allows you to move up to a higher menu or to increase the value of a parameter when you are in the “edit” mode. DOWN button: In the setting mode, this button allows you to shift to a lower menu or to decrease the value of a parameter when you are in the “edit” mode. 9.1 SETPOINT ADJUSTABLE BY THE USER Setpoint type Setpoint (summer/winter) Summer default (range) Winter default (range) First setpoint (°C) Coo/Hea 7 (5÷18) 45 (35÷55) Second setpoint (°C) Co2/He2 18 (7÷23) 35 (25÷45) Sanitary Setpoint (°C) San 48 (25÷55) The functionality of the second setpoint can be used only when you purchase the proper optional kit. 9.2 DISPLAY In ... -
Page 17: Dynamic Set-Point Adjusting
9.4 DYNAMIC SET‐POINT ADJUSTING The controller can change the set‐point by adding a value depending on the outdoor air temperature sensor. In this case, you need to change the values of the parameters from b08 to b14 following the indications below (settings to be done by the installer): Prameters of the controller PAr‐>rE‐> • b08 = dynamic set‐point, enabled = 1/ unabled = 0 (must be disabled in the case of the use of climatic compensation from the optional remote keyboard CRH). • b09 = offset max in cooling mode operation. • b10 = offset max in heating mode operation. • b11 = Outdoor temperature setting in cooling mode. • b12 = Outdoor temperature setting in heating mode. • b13 = Temperature difference in cooling mode operation. • b14 = Temperature difference in heating mode operation. Curve of the set‐point variation as a function of the outside temperature: Temperature 9.5 0‐10V ANALOG INPUT FOR SET‐POINT REGULATION Another type of setting that allows to change the set‐point by adding (or subtracting) a value in function of the 0‐10V analog input (if enabled). To enable the function, you must set H21 = 40, and change the values of the parameter b15 (range 0‐10), taking into account that: ... -
Page 18: Hydraulic Pump Operation
‐ if this input is at 0 volts you will have the actual set point: set point (Coo/Hea) ‐ b15/2 ‐ if the input is at 5 volts the set point will be the set one (Coo/Hea) ‐ if the input is 10 volts you will have the actual set point: set point (Coo/Hea) + b15/2 The 0‐10V signal must be applied to the terminals 0‐10V + and 0‐10V‐ (see the wiring diagrams). 9.6 HYDRAULIC PUMP OPERATION The hydraulic pump can be set according to one of the three following types of operation: ‐ Operation by thermoregulator (default) ‐ Operation by thermoregulator with periodic activation ‐ Continuous operation The pump is switched off immediately with the alarm activation of the flow switch with manual reset. The pump is always turned on if the antifreeze resistances are running or when the hydraulic pump operates in antifreeze mode (is enabled if the water regulation temperature decreases below 8°C, is disabled if the water regulation temperature increases above 10°C). 9.6.1 OPERATION BY THERMOREGULATOR (Default) During this operating mode (P03 = 1, default), the thermoregulator actuates the pump; after a time delay of 20 seconds from actuation of the pump, the compressor also will be activated. However, in power off case, the pump turns off with a delay time of 120 seconds after the thermoregulator is in off state (the off mode corresponds to the turning off state of the compressor). ... -
Page 19: Operation By Thermoregulator With Periodic Activation
9.6.2 OPERATION BY THERMOREGULATOR WITH PERIODIC ACTIVATION The function is disabled if P17= 0 (default). If the pump is set in operation by thermoregulator (P03 = 1, default), it will be activated periodically for a time periode defined by the parameter P17 (in seconds) after a counting time set by the parameter P16 (in minutes), activated when the pump is turned off for satisfied thermoregulation. In the case of the activation of the flowswitch alarms with automatic reset the pump is still operating even if the compressor is off. The periodic function is also interrupted in the case of the intervention of the antifreeze thermoregulator that constrains the opeartion of the pump. 9.6.3 CONTINUOUS OPERATION In this operating mode, enabled if P03=0, the pump is always turned on. It turns off only when there is in OFF state. -
Page 20: Antifreeze Protection Resistances (If The Ka Accessory Is Present)
9.7 ANTIFREEZE PROTECTION RESISTANCES (IF THE KA ACCESSORY IS PRESENT) The antifreeze resistances, installed on the outer surfaces of the evaporator plates, activates even when the unit is switched off (but energized) if the outlet water temperature goes below 4°C. The same resistances are switched off when the temperature measured by the outlet water sensor exceeds 6°C. The heating cable placed on the basement of the appliance turns on when the outdoor air temperature decreases below 4°C or when the unit starts the defrosting cycle. It will be disactivated if the outdoor temperature exceeds 6°C. 9.8 ON/OFF REMOTE CONTROL AND SUMMER/WINTER MODES The terminal block has two digital inputs to control the unit via an external consent. SW‐SW: Summer/winter switching mode input via remote control. To enable this feature, set the parameter H76=1. The parameter is protected by maintainer password (could be changed by the installer). onoff‐onoff: Remote on‐off input. The feature is already enabled by default. Remove the bridge connection in the terminal block to put the unit in stand‐by mode (in such a state the code ''E00'' will appear on the display of the unit). If the sanitary operating mode is activated, the on‐off remote function will switch off the machine provided the sanitary set had not yet been reached (in such a state the word ''SAN'' will appear on the display of the appliance). 9.9 SANITARY VALVE ADJUSTMENT To activate the hot sanitary water function, be sure to install a temperature sensor inside the tank and to connect it to the SAN‐ SAN terminals. Once the temperature sensor is installed and connected, it is necessary to set the parameter H10 = 1, and to set the parameter H20 = 6. To set these parameters, please enter the maintainer password and then enter the PRG‐>Pss‐>PAr‐>Cnf‐... -
Page 22: Heating Mode On Sanitary Accumulation
9.11 HEATING MODE ON SANITARY ACCUMULATION If the parameter H83=1, the appliance exploits the accumulation tank for sanitary hot water also to heat the plant side. In these conditions, the relay which controls the sanitary valve will be also energized during heating operation and not only in sanitary mode. During the defrost periode and in cooling mode the valve will be de‐energized. 9.12 AUXILIARY ELECTRIC HEATERS OF THE SYSTEM The output of the auxiliary electric heaters of the system is active only when the parameter H58 is set to 22 (it is already set as default) or H61=22 (it is not set as default) otherwise, alternatively, H62=22 (not set by default) for the V2 series only, while H60=22 (not set by default) for the V2+ series only. The heaters are activated when the parameter r10 is set to 1. If the regulation temperature remains below the water setpoint minus r11 (°C) for a duration equal to r12 (minutes), the heaters will thus be turned on. The heaters will be turned off when the water temperature reaches the setpoint. Refer to the possible configurations in ... -
Page 23: Indication On Summer/Winter Operation
‐ r24=1 the auxiliary electric heaters are used just on system side; ‐ r24=2 the auxiliary electric heaters used just for sanitary hot water; ‐ r24=3 (default) the auxiliary electric heaters are used for both sanitary hot water and system. 9.16 INDICATION ON SUMMER/WINTER OPERATION You can set a digital output to indicate the operating mode of the unit, system side (the digital outputs are at 230V AC, therefore they must control a relay, not included, with free contacts). The digital outputs are set when the value 31 is attributed to the parameters H58 or H61 (or H62). The output is active during summer operation while is disabled in OFF mode or winter mode. During sanitary hot water production and defrosting mode, the output keeps the setting ... -
Page 24: Tables Of Configurations Allowed To User And Installer
9.17 TABLES OF CONFIGURATIONS ALLOWED TO USER AND INSTALLER 9.17.1 Table of configurations Parameter Description Unit Default Range Visibility Admitted configuration Note Coo First setpoint in cooling mode °C 7,0 5,0÷Co2 Hea First setpoint in heating mode °C 45,0 He2÷55,0 San Sanitary water temperature Setpoint °C 48,0 25,0÷55,0 Co2 Second setpoint in cooling mode °C 18,0 Coo÷23,0 He2 Second setpoint in heating mode °C 35,0 25,0÷Hea 0 = function disabled H10 Enabling the sanitary function / ... -
Page 25: Alarms
b14 Temperature differential in heating °C 10.0 ‐50.0÷80.0 Set‐point regulation band by analog b15 / 5.0 0.0÷10.0 input 0‐10V 0 = continous operation P03 Heat pump operation mode / 1 0÷1 I 1 = thermoregulation operation Lower values than those of Depending default÷100 (If there is any doubt on the default compromise the P07 Maximum speed of modulating pump % on the 0÷100 I default value, please contact the optimal operation of the model ... -
Page 26: Anti-Freezing
9.18.3 Anti‐freezing The alarm will be activated when the outlet water temperature sensor is less than 4°C. It turns off when the temperature becomes higher than +6°C. 9.18.4 Sensors alarm The alarm will be activated in the case of a short or open circuit of any connected and enabled sensor. The alarm will be activated also when the temperature becomes higher than the sensors’ upper limit of 100°C or less than the lower limit of ‐50°C. 9.18.5 Timeout inverter Supposing the controller does not communicate with the driver board of the compressor, the time out alarm will be activated in order to prevent a system’s control loss. 9.18.6 ON/OFF remote In case the unit is remote controlled by a remote digital input. 9.18.7 High pressure If the on board pressure transductor detects a pressure higher than 41 bar, the alarm will be activated. In this case the compressor will stop immediately. The alarm will reset when the pressure decreases under 36 bar. 9.18.8 High pressure flow switch (in series with the compressor outlet probe) If the pressure switch on the machine detects a pressure higher than 42 bar the alarm will be active. In this case, the compressor will be immediately stopped. The alarm resets when the pressure drops below 32 bar. 9.18.9 Low pressure If the on board pressure transductor detects a pressure lower than value set from the controller (as a function of operating mode and/or of the model) the alarm will be activated. In this case the compressor will stop immediately. The alarm will reset when the pressure goes over the set hysteresis. 9.19 POWER FAILURE After power supply reset: 1. The system comes back to the previous state before the power failure. 2. If the system is defrosting, this mode will be cancelled after power supply reset. 3. All the running timings will be cleared and reset again. 9.20 User block allarms table Error description ... -
Page 27: Maintenance And Periodical Controls
• Place the general differential circuit breaker to "OFF" position. If the temperature drops below 0°C there is serious danger of frost: add a mixture of water and glycol in the system, otherwise drain the hydraulic circuits of the system and of the heat pump. 11 MAINTENANCE AND PERIODICAL CONTROLS WARNING: All the operations described in this chapter HAVE TO BE CARRIED OUT BY TRAINED STAFF ONLY. Before ... -
Page 28: Technical Data
13 TECHNICAL DATA HPE 06 HPE 09 HPE 12 HPE 15 DESCRIPTION 6,2* (2,30÷5,67) 9,9* (3,70÷8,93) 13,2* (4,60÷11,90) 16,0* (6,00÷14,36) Cooling output (1) 1,49 2,41 3,12 3,85 Power absorption (1) 3,80 A 3,71 A 3,82 A 3,73 A E.E.R. (1) 5,0* (1,80÷4,44) 8,2* (3,00÷7,18) 10,8* (3,70÷9,53) 13,1* (4,80÷11,44) -
Page 30: Models Hpe 06
15.3 MODELS HPE 12 Water flow rate [m³/h] 15.4 MODELS HPE 15 Water flow rate [m³/h]... -
Page 31: Water Pump Curves
16 WATER PUMP CURVES 16.1 MODELS HPE 06‐09 16.2 MODELS HPE 12‐15 ... -
Page 32: Operating Limits
17 OPERATING LIMITS 17.1 EVAPORATOR WATER FLOW RATE The nominal water flow rate is referred to a ∆T equal to 5°C, between the evaporator’s inlet and outlet temperatures. The allowed maximum flow rate is corresponding to ∆T=3°C; higher values may cause too high pressure drops. The allowed minimum water flow rate is corresponding to ∆T=8°C (except for the models N‐i‐HWAK/WP V2/V2+ 06 for which a maximum temperature difference of ∆T=6,5°C is allowed). Insufficient values may cause too low evaporating temperatures with the intervention of safety devices which would stop the unit and, in some particular cases, the water can freeze in the evaporator coil causing the refrigeration circuit to break down. ... -
Page 33: Correction Factors For Use Of Glycol
18 CORRECTION FACTORS FOR USE OF GLYCOL Glycol rate Freezing point (°C) CCF IPCF WFCF PDCF ‐3,2 0,985 1,02 1,08 ‐7,8 0,98 0,99 1,05 1,12 ‐14,1 0,97 0,98 1,10 1,22 ‐22,3 0,965 0,97 1,14 1,25 ‐33,8 0,955 0,965 1,33 CCF: Capacity correction factor IPCF: Input power correction factor WFCF: Water flow rate correction factor PDCF: Pressure drops correction factor. The water flow rate and pressure drop correction factors are to be applied directly to the values given for operation without glycol. ... -
Page 34: Models Hpe 12-15
19.3 HPE 12‐15 IN/OUT: 1”M... -
Page 35: Wiring Diagrams
20 WIRING DIAGRAMS 20.1 MODELS HPE 06 ‐09 ... -
Page 36: Models Hpe 12
20.2 MODEL HPE 12 ... -
Page 37: Model Hpe 15
20.3 MODEL HPE 15 ... -
Page 38: Cr Remote Keyboard (Optional Accessory)
21 CR REMOTE KEYBOARD (OPTIONAL ACCESSORY) The CRH remote keyboard allows you to set the operating mode of THE chiller and fan coils units connected to a RS485 network. The network can consist of up to 5 cascaded chillers and fan coils up to 70 units in 9 heating zones. The keyboard can be fitted onto the E503 built‐in wall boxes. UP: to increase the ESC: to go back to the parameter’s value or to scroll the menu previous menu level DOWN: to decrease the F1: to enter the menus parameter’s value or to and the submenus scroll the menu ENTER: to enter the F2: to select the unit and to submenu and to confirm set the parameter’s value the parameter’s setting Note: For more informations, please see the manual of the CRH device. 21.1 CONNECTION OF THE CRH KEYBOARD TO THE MINICHILLER The connection between theCRH, the minichillers and terminal units is very simple with a twisted shielded pair cable of 2x0.5m² connected in series. 6: to be connected to the R‐ exit terminal of the unit’s exit terminal board; 7: to be connected to the R+ exit terminal of the unit’s exit terminal board; 8: to be connected to the 12V‐ exit terminal of the unit’s exit terminal board; 9: to be connected to the 12V+ exit terminal of the unit’s exit terminal board. 22 DOUBLE SET‐POINT KIT (OPTIONAL ACCESSORY) 22.1 PURPOSE AND SCOPE The function of double set‐point is consisting of introducing a second working set‐point of the plant side (in both cooling and heating modes). ... -
Page 39: Functions Of Humidistat
Relay • power supply 230V AC • max. resistive load for single pole: 8A • max. inductive load for single pole: 1,6A 22.3 FUNCTIONS OF HUMIDISTAT By reading the internal sensor of temperature and humidity, the dew point will be calculated. The temperature measured from the internal sensor to the controller will be compared with the dew point (evaluated at the last moment of tAr) added to the parameters odr and Hy: • If Tr<Tint<Tr+odr → the relay is activated for all the next tAr time. • If Tr+odr<Tint<Tr+odr+Hy → The relay is activated for the value in % of the detected on the pump. • If e Tint>Tr+odr+Hy → the relay is activated for all the nexyt tAr time. The parameters tAr, odr and Hy are set in the factory and can be changed. % Output ON time of the relay in respect of tAr Hy odr Dew Dew point int (°C/°F) point + odr 22.4 SETTING OF MINICHILLER H82 is the parameter used for adjusting the mode of double set‐point (from maintainer menu): H82 FUNZIONAMENTO 0 Popup menu appears of selection on CRH. 1 Classic mode 2 Double set‐point active in the summer 3 ... -
Page 40: Adjuastable Set-Point
However, it is recommended to use an external relay, included in the double set‐point kit, to allow the connection with higher loads (up to 8A resistive, 1.6A inductive) and at the same time separate the lines of the power supply of the minichiller, 3‐way valve and fan coils (in this case it is necessary to provide appropriate protection to the power supply line of the fan coil). In this second case, the relay must be installed on board machine in the DIN bar of the user’s terminal block, connecting the power supply for V2 models to N2‐NC2 terminals, or to DO5‐DO5 terminals for the case of V2+ models (the output of DO5‐DO5 terminals will be enabled when the parameters H60 and H70 are set respectively to 25 and 16). The 3‐way valve must be then connected to the outputs of the relay NO COM NC if it has 3 contacts for power supply, otherwise to NO‐COM terminals if it has 2 contacts for power supply and with spring return. Please refer to the table of the paragraph 9.17 for the configuration of the paramters The 3‐way valve that can be energized in 2 or 3 contacts (not included within the kit) The 3‐way valve is applied to divert the water flow between floor plant and fan coil units. In the case of a 3‐way valve with 2 contacts for power supply (with return spring), when the 3‐way valve is not activated, the outlet of the valve that is opened must be connected to the floor plant. In the case of a 3‐way valve with 3 contacts for power supply, the way of the valve that is hydraulically connected to the floor plant must be activated as shown in the wiring diagrams presented in the paragraph 22.8. In this wiring diagrams show the direction of the water flow to divert by valve to either floor side or plant side. In these wiring diagrams, as for floor side or plant ... -
Page 41: Wiring Diagrams
22.8 WIRING DIAGRAMS In these wiring diagrams, as for boiller side, plant, floor, plant or fan coil side, it’s intended on which way the valve will be diverted when it’s activated. 22.8.1 Wiring diagram, without external relay connection 22.8.2 Wiring diagram, with external relay connection ... -
Page 42: Humidistat Connection
WARNING: When using a 3‐way valve for double setpoint, if the valve has 3 contacts for the power supply and in the case of external relay connection, the valve will also remain energized when the minichiller is in OFF state or when is turned off by the internal switch. For safety reasons we strongly recommend to turn OFF the external breaker of the electrical power when the unit should be maintened. 22.9 HUMIDISTAT CONNECTION Carry out the following connections between the humidistat and the terminal block of the minichiller unit: • Connect POWER SUPPLY to 12V+ and 12V‐. • Connect RELAY‐C/NC to the two terminals SE. Outdoor Analogic Power supply RS485 Digital sensor output 12‐24Vac/dc Serial input 22.10 HYDRAULIC DIAGRAM TYPE Floor plant 3-way valve double set poit Minichiller Inverter thermo- Sanitary accumulator 3-way valve Aqueduct... - Page 43 NOTE...
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- Page 48 A2B Accorroni E.G. s.r.l. Via d’Ancona, 37 - 60027 Osimo (An) - Tel. 071.723991 r.a. - Fax 071.7133153 web site: www.accorroni.it - e-mail: a2b@accorroni.it...