Air-condensed water chillers and heat pumps YLCA / YLHA Technical Information Ref.
Index Index 1 Technical Information...............................................................................................................1 1.1 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 General Information.................................................................................................................2 Nomenclature...........................................................................................................................2 General description of the unit.......................
Index 1.11.5 1.12 1.13 1.13.1 1.13.2 1.13.3 1.13.4 1.14 1.14.1 ii Preparation and connecting to the various utilities.................................................................47 Unit sound power spectrum data........................................................................................... 51 Operating instructions............................................................................................................ 52 Operating instructions µC2 (YLCA/YLHA 40).........................
1 Technical Information
1 1.1 Technical Information General Information 1.1 General Information 1.1.1 Nomenclature Air-water chiller with axial fans / Air-water heat pump with axial fans Nominal cooling capacity in kW Voltage M: Single-phase voltage (230.1.50) T: Three-phase (400.3.50) -: Without hydro kit (pack) P: With hydro kit (pack) YLCA / YLHA 60 M - T P 1.1.2 General description of the unit The YLCA/YLHA units are high-performance air-water chillers and heat pumps using R-410A ecological refrigerant.
Technical Information General Information 1 1.1 1.1.
1 1.1 Technical Information General Information 1.1.5 Technical specifications These units are supplied completely factory-assembled and with all refrigerant tubing and wiring ready for installation on site. After mounting, these units must go through an operational test with water. Re‐ frigerant leaks will also be checked during this process. Sheet casing The units are made of galvanized steel sheeting and anticorrosion nuts and bolts. Panels can be removed for access to internal components.
Technical Information General Information 1 1.1 Hydro kit (pack) These units include a pack assembled with the components of a hydro kit. This assembly is located within the unit frame and does not increase the footprint of same. It includes the following components: Lined buffer tank and with an antifreeze heater, centrifugal pump, expansion vessel charged with nitrogen at 1.5 bar, safety valve set to 6 bar, water circuit, pressure gauge, two air bleed valves, filling valve and drain valve.
1 1.1 Technical Information General Information Options and accessories Units without hydro kit This includes the elements described in the previously mentioned specifications, less the hydro kit (pack). The water circuit includes an air bleed valve. Connections are ready for on-site installation. Two pumps Accessory available with models 50 to 150 with hydro kit.
Technical Information General Information 1 1.1 Antivibratory supports Whenever necessary to reduce vibrations and noise produced by the unit to a maximum, a set of steel spring antivibratory supports can be used. These should be installed between the chassis support of the unit and the base or floor on which it is to sit. This base must be solid and dimensioned in accord‐ ance with the load to be supported.
1 1.2 Technical Information Safety instructions 1.2 Safety instructions This document contains the necessary information for the safe and efficient transportation, assembly and installation of the air conditioning unit. This guarantees the condition of the unit and its operating safety. Only an authorised company may assemble the air conditioning unit. ATTENTION Only authorised companies with the appropriate technical resources and suitably trained personnel may install the air conditioning unit.
Technical Information Instructions for storage, transport, loading and unloading of the unit 1 1.4 1.4 Instructions for storage, transport, loading and unloading of the unit CAUTION Outdoor units must be moved and stored vertically to prevent oil from leaking from the compressor. Delivery inspection The unit should be carefully inspected for visible damage or abnormalities as soon as it is received.
1 1.5 Technical Information Selection guide (YLCA/YLHA) 1.4.3 Disposal of the unit When removing the unit, the components must be ecologically recovered. The refrigeration circuit is full of refrigerant that must be extracted and delivered to the gas manufacturer for recycling. ATTENTION The refrigerant gas contains greenhouse-effect fluorinated gas covered by the Kyoto protocol. Please see the specifications plate for type of gas and quantity per system.
Technical Information Selection guide (YLCA/YLHA) 1 1.5 SELECTION EXAMPLE A chiller is required to chill water from 13°C to 7°C, with a cooling capacity of 119 kW. There are also other design conditions: • Ambient air entering the condensing unit 35°C • Fouling factor: 0.044 m2 °C/kW • Altitude: Sea level Taking a quick look at the table, we can see that a YLCA 120 unit gives an approximate required capacity of 119 kW.
1 1.5 Technical Information Selection guide (YLCA/YLHA) YLHA SELECTION EXAMPLE A YLHA heat pump operating at a 35°C ambient temperature should chill water from 13°C to 7°C, with a 112 kW cooling capacity. A 110 kW heating capacity is required in 5°C design ambient temperature and a hot water output tem‐ perature of 40°C. The fouling factor is 0.044 m2 °C/kW, with the unit operating at sea level (no corrections).
Technical Information Selection guide (YLCA/YLHA) 1 1.5 1.5.1 Selection guide with glycol (cooling only units) Necessary information The following information is needed to select a YLCA water chiller: 1 Cooling capacity needed 2 Design cold water/glycol input and output temperatures. 3 Design water/glycol flow. 4 Design input temperature of air to condensing unit. Normally, this will be the design ambient temper‐ ature of summer air, unless influenced by the situation or other factors.
1 1.5 Technical Information Selection guide (YLCA/YLHA) On design glycol concentration, apply the capacity correcting factors x 1.015 and power x 1.005 (see Correcting factors for other glycol concentrations, see on page 18). Applying these factors to the selection: YLCA ‑120 Capacity = 76.8 x 0.987 x 0.973 x 1.015 = 74.9 kW Comp. power = 28.8 x 0.995 x 1.020 x 1.005 = 29.4 kW For the specified glycol concentration and a ‑4C output temperature, Figure 3 shows a 0.248 glycol factor.
Technical Information Technical data 1 1.6 1.6 Technical data 1.6.1 Limits of use Voltage limits Model Nominal at 400 Mini‐ Maxi‐ mum mum YLCA YLHA 342 436 Input air temperature to the coil DB Water output temperature Operating cycle Operating cycle Minimum °C Maximum °C Minimum °C Maximum °C Cold Cold Cold Cold -18 Heat -10 46 Heat 20 5(1) Heat 30 15 Heat 50(2) Temperature diff.
1 1.6 Technical Information Technical data Glycol concentration and correcting tables Recommended ethylene glycol concentrations A % in weight a Recommended concen‐ tration % in weight B Outlet liquid tempera‐ ture C b Freeze point C Glycol factor L/S °C/kW in recommended con‐ centrations c Glycol factor in recom‐ mended concentrations Ethylene glycol in other concentrations.
Technical Information Technical data 1 1.
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Technical Information Technical data 1 1.
1 1.6 Technical Information Technical data Pressure drop in filters 1 1/2" filter Water flow (l/h) 3500 4000 4500 5000 5500 6000 6500 7000 7500 kPa 1,3 2,6 4 5,4 6,9 8,4 10 11,6 13.
Technical Information Technical data 1 1.6 1.6.3 Physical data Physical data, YLCA units Physical data YLCA (T and TP) Characteristics Cooling capacity Capacity control Power supply 40 50 60 80 100 120 150 kW 39,6 52,1 60,5 72,6 101 119 151 % 100 EER/OOP Compressor consumption Compressor amperage Compressor 50-100 25-50-75-100 V/ph 400.3.50 3 2,9 3,1 2,9 2,9 2,9 2,8 kW 12,46 2 x 8.5 2 x 9.2 2 x 12.4 4 x 7.8 4 x 9.4 4 x 12.5 A 23,5 2 x 15.5 2 x 16.7 2 x 24.
1 1.6 Technical Information Technical data (1) Weights for the empty unit (2) Static pressure available, Eurovent certified (3) Pressure with clean filter Units without pack YLCA Characteristics Start-up current (compressor) Water circuit pressure drop 40 50 60 80 100 120 150 A 174 118 118 174 118 118 174 kPa 75 40 51 61 54 32 27,5 4 6 6 7 12 12 14 17,2 23,6 24,8 33,6 50 53 67,3 Unit water content Max. unit power supply consumption kW Max.
Technical Information Technical data 1 1.6 Physical data, YLHA units Physical data YLHA (T and TP) Characteristics 50 60 80 100 120 150 Cooling capacity kW 37,8 52 60,5 72,2 96 114 145 Heating capacity kW 38,6 52,5 59,6 74,7 104 119,6 150 Capacity control % 100 Power supply 50-100 25-50-75-100 V/ph EER/OOP Compressor 40 400.3.50 2,7/2,8 2,6/3 2,8/2,8 Compressor consumption in cooling kW 12,4 2x8 2 x 9.2 2 x 12.1 4 x 8.3 4 x 10.2 4 x 11.
1 1.6 Technical Information Technical data (1) Weights for the empty unit (2) Static pressure available, Eurovent certified (3) Pressure with clean filter Units without pack YLHA Characteristics 50 60 80 100 120 Start-up current (compressor) A 174 118 118 174 118 118 174 Pressure drop, cooling mode kPa 70 37 51 56 53 29,5 25,5 4 6 6 7 12 12 14 kW 16,3 23 24,8 32,6 50 53 71,1 Max.
Technical Information Measurements, clearances and accesses 1 1.7 1.7 Measurements, clearances and accesses 1.7.1 Clearances When installing each unit, clearances should be left for: 1 Air inlet and discharge. 2 Maintenance servicing. 3 Power supply connections. For proper operation, all minimum clearances shown on the general dimension diagrams should be respected always with regard to possible obstruction of air circulation of the work of a user.
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Technical Information Measurements, clearances and accesses 1 1.7 1.7.
1 1.7 Technical Information Measurements, clearances and accesses 1.7.
Technical Information Measurements, clearances and accesses 1 1.7 1.7.
1 1.7 Technical Information Measurements, clearances and accesses 1.7.
Technical Information Capacities YLHA 1 1.8 1.8 Capacities YLHA 1.8.1 Cooling capacities YLHA 40 ÷ 150 Outdoor ambient temperature °C DB (80% RH) YLHA model 40 50 60 80 100 120 150 20 25 30 32 35 Water outlet temp. °C Ca‐ pacity kW kW kW kW kW kW kW kW 5 41,15 10,5 40,3 10,9 38,33 11,8 36,8 12,45 6 42,73 10,6 41,8 11 39,84 11,9 38,2 12,55 7 44,9 10,7 43,44 11,1 41,37 12 39,7 12,65 8 45,47 10,8 44,58 11,2 42,52 12,1 40,8 Abs. power Ca‐ pacity Abs.
1 1.8 Technical Information Capacities YLHA 1.8.2 Cooling capacities YLHA 40 ÷ 150 (35% ethylene glycol) Outdoor ambient temperature °C DB (80% RH) YLHA model 40 50 60 80 100 120 150 Water outlet temp. °C Ca‐ pacity kW kW kW -5 26,35 7,39 25,27 -4 27,86 7,61 26,69 -2 30,58 8,03 29,42 0 33,32 8,44 2 37,19 20 25 Abs. power Ca‐ pacity 30 Abs. power 32 Ca‐ pacity 35 Abs. power Abs. power Ca‐ pacity 43 Abs. power Ca‐ pacity 46 Abs.
Technical Information Capacities YLHA 1 1.8 1.8.3 Heating capacities YLHA 40 ÷ 150 Outdoor ambient temperature °C DB (80% RH) YLHA model 40 50 60 80 100 120 150 -15 -10 Water outlet temp. °C Ca‐ pacity Abs. pow‐ er kW 30 16,6 35 -5 Ca‐ pacity Abs. pow‐ er kW kW 7,6 21,3 16 8,6 20,7 40 13,8 9,5 45 - - 50 - - 30 22,6 35 0 5 7 Ca‐ pacity Abs.
1 1.9 Technical Information Capacites YLCA 1.9 Capacites YLCA 1.9.1 Cooling capacities YLCA 40 ÷ 150 Outdoor ambient temperature °C DB (80% RH) YLCA Model 40 50 60 80 100 120 150 36 20 Water outlet temp. °C Ca‐ pacity 5 6 7 25 30 Abs. power Ca‐ pacity 32 Abs. power Ca‐ pacity 35 Abs. power Ca‐ pacity 40 Abs. power Ca‐ pacity 43 Abs. power Ca‐ pacity 46 Abs. power Ca‐ pacity Abs. pow‐ er Abs.
Technical Information Capacites YLCA 1 1.9 1.9.2 Cooling capacities YLCA 40 ÷ 150 (35% ethylene glycol) Outdoor ambient temperature °C DB (80% RH) YLCA Model 40 50 60 80 100 120 150 Water outlet temp.
Technical Information 1 1.10 Cooling operation and hydraulic diagrams 1.10 Cooling operation and hydraulic diagrams 1.10.1 YLCA models: cooling only 1 Heat exchange takes place between the heat transfer liquid (water or glycol water) and the refrigerant in the plate heat exchanger. 2 Water is cooled, and refrigerant is evaporated and reheated. 3 Then the Scroll compressor condenses the refrigerant (gas) until the condensing pressure is reached, and the refrigerant goes to the air cooled condensing unit.
Technical Information 1 Cooling operation and hydraulic diagrams 1.10 Cooling operation and hydraulic diagram YLCA 40 (cool only) Safety/Control devices Components A High-pressure switch 1 Tandem compressor 13 Water tank B Low-pressure switch 2 Air-cooled condenser 14 Charge valve C Condensing pressure trans‐ ducer 3 Filter dryer 15 Drain valve E Water outlet temp. sensor (An‐ tifreeze and display) 4 Sight glass 16 Water filter (not inside the unit) F Water inlet temp.
1 Technical Information 1.10 Cooling operation and hydraulic diagrams Cooling operation and hydraulic diagram YLCA 50-80 (cool only) Safety/Control devices 40 Components A High-pressure switch 1 Tandem compressor 13 Water tank B Low-pressure switch 2 Air-cooled condenser 14 Charge valve C Condensing pressure trans‐ ducer 3 Filter dryer 15 Drain valve E Water outlet temp. sensor (An‐ tifreeze and display) 4 Sight glass 16 Water filter (not inside the unit) F Water inlet temp.
Technical Information 1 Cooling operation and hydraulic diagrams 1.10 Cooling operation and hydraulic diagram YLCA 100, 120 and 150 (cool only) Safety/Control devices Components A High-pressure switch 1 Tandem compressor 13 Water tank B Low-pressure switch 2 Air-cooled condenser 14 Charge valve C Pressure transducer port. (Fan speed setting ‑ condensing pressure display) 3 Filter dryer 15 Drain valve D Water outlet temp.
Technical Information 1 1.10 Cooling operation and hydraulic diagrams 1.10.2 YLHA models: heat pump Cooling cycle 1 The 4-way valve is activated. 2 Heat exchange takes place between the heat transfer liquid (water or glycol water) and the refrigerant in the plate heat exchanger. Water is cooled, and refrigerant is evaporated and reheated. 3 Then the Scroll-type compressor condenses the refrigerant (gas) until the condensing pressure is reached, and the refrigerant goes to the air cooled condensing unit.
Technical Information 1 Cooling operation and hydraulic diagrams 1.10 Cooling operation and hydraulic diagram YLHA 40 (heat pump) Safety/Control devices Components A High-pressure switch 1 Compressor 13 Expansion vessel B Low-pressure switch 2 Air-cooled condenser 14 Safety valve E Pressure transducer port.
1 Technical Information 1.10 Cooling operation and hydraulic diagrams Cooling operation and hydraulic diagram YLHA 50-80 (heat pump) Safety/Control devices 44 Components A High-pressure switch 1 Compressor 13 Expansion vessel B Low-pressure switch 2 Air-cooled condenser 14 Safety valve E Pressure transducer port.
Technical Information 1 Cooling operation and hydraulic diagrams 1.10 Cooling operation and hydraulic diagram YLHA 100, 120 and 150 (heat pump) Safety/Control devices Components A High-pressure switch 1 Tandem compressor 15 Water tank B Low-pressure switch 2 Air-cooled condenser 16 Charge valve C Pressure transducer port. (Fan speed setting ‑ condensing pressure display) 3 Filter dryer 17 Drain valve D Water outlet temp.
1 Technical Information 1.11 Instructions for installation and connection of the unit 1.11 Instructions for installation and connection of the unit 1.11.1 Characteristics of the location Before locating the unit, make sure you have received the appropriate product by checking the specifi‐ cations described on the outside of same. The unit should be placed on a perfectly horizontal plane, making sure the base can support the weight of the unit.
Technical Information 1 Instructions for installation and connection of the unit 1.11 1.11.4 Rotational direction of Scroll compressors The Scroll compressors and the fans only operate correctly if they rotate in the correct direction. All of the motors and compressors in the unit are connected so that they rotate correctly. If the compressors are not connected correctly and are rotating in the wrong direction: • The compressor will not compress. • Operating noise will be abnormal.
Technical Information 1 1.11 Instructions for installation and connection of the unit Electrical installation, YLCA 50, 60 and 80 A YLCA terminal strip b General alarm (voltage-free inverter contact max. 2A re‐ sist. at 230 Vac) B Outdoor strip c Remote ON / OFF switch C Main switch d Pump heat protectors Auxiliary contacts Pump contacts a Supply (400 ‑ 3 + N ‑ ph ‑ 50 Hz) e Pump relay (max. 2A resist.
1 Technical Information Instructions for installation and connection of the unit 1.11 Electrical installation YLHA 50, 60 and 80 A YLHA terminal strip terminal c Remote ON / OFF switch d Remote COOL / HEAT switch CLOSED = COOL OPEN = HEAT (YLHA units only) B Outdoor strip C Main switch e Pump heat protectors Auxiliary contacts Pump contactors a Supply (400 ‑ 3 + N ‑ ph ‑ 50 Hz) f Pump relay (max. 2A resist.
Technical Information 1 1.11 Instructions for installation and connection of the unit Electrical installation YLCA/YLHA 100, 120 and 150 A YLCA / YLHA termi‐ nal strip c General alarm (voltage-free inverter contact max. 2A re‐ sist.
Technical Information 1 Unit sound power spectrum data 1.12 1.
1 Technical Information 1.13 Operating instructions 1.13 Operating instructions 1.13.1 Operating instructions µC2 (YLCA/YLHA 40) DESCRIPTION OF THE CONTROL UNIT This is a multipurpose controller specially programmed for use with air-water chillers and heat pumps equipped with a compressor with one single power stage. Main functions • Water temperature control (at inlet or outlet, as per parameter r6). • Defrost cycle management. • System operating and safety management. • Fan speed control.
1 Technical Information Operating instructions 1.13 User Level Accessible with password 22. Allows access to all parameters the user normally sets. Direct Level Accessible without a password. Allows for reading of the values detected by the sensors, as well as other system values. Can be used by the user without affecting unit operation. General Modification of the parameters that affect basic unit configuration should be made with the controller in Standby position.
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Symbols on the display The display has three figures in green, plus the sign and one decimal. It also shows the symbols of the functions selected in orange (the alarm symbol is red).
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Technical Information 1 Operating instructions 1.13 Parameters relating to sensors Parameters relating to sensors Display /01 Description NTC B1 sensor (water inlet): 0=Always ON (function not available) Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Operating graphics Min. operating time of a compressor A Signal B Compressor Min. stoppage time of a compressor A Signal B Compressor Min.
Technical Information 1 Operating instructions 1.
1 Technical Information 1.13 Operating instructions Parameters relating to fans Parameters relating to fans Display F01 Description Fan outlet: 0= Absent (function not available Level VS F Unit Max. Min.
Technical Information 1 Operating instructions 1.13 Parameters relating to defrost Parameters relating to defrost Parameters d01 Description Defrost operation: 0= Absent (function not available Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Antifreeze control configuration parameters Antifreeze control configuration parameters Parameters Description Level VS Unit Max. Min.
Technical Information 1 Operating instructions 1.13 Unit configuration parameters Unit configuration parameters Display H01 Description Unit model: 2= Water chiller Level VS Unit Max. Min. F 54 (R/W) 2 (YLCA) 3 (YLHA) 3= Air-water heat pump Value H02 Number of vent circuits (do not modify this parameter) F 12 (R/W) 0 H03 No. of evaporating units present (do not modify this parameter) F 13 (R/W) 0 H04 No.
1 Technical Information 1.13 Operating instructions Alarm configuration parameters Alarm configuration parameters Parameters Level VS Unit Max. Min. Value P01 Alarm delay by flow switch at start-up. U 63 (R/W) Seconds 150 0 20 P02 Alarm delay by flow switch with unit in operation. U 64 (R/W) Seconds 120 0 5 P03 Alarm delay by low-pressure switch at start-up.
Technical Information 1 Operating instructions 1.13 Controller configuration parameters Controller configuration parameters Display Description Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Alarm table Alarm table Display Reset A1 Antifreeze alarm Aht High temperature at start-up (if activated, P20=1) Automatic ALt Low temperature at start-up (if activated, P20=1) Automatic d1-2 Defrost operating - dF1-2 Problem in defrost Automatic E1 B1 sensor Automatic E2 B2 sensor Automatic E3 B3 sensor Automatic E4 B4 sensor Automatic ELS Low supply voltage Automatic EHS High supply voltage Automatic EPr Eprom. error.
1 Technical Information Operating instructions 1.13 Functions Alarm reset Pressing the UP and DOWN keys for 5 seconds cancels alarms present in the memory. At the same time, the alarm message disappears from the display and the alarm relay is deactivated. Forced defrost (heat pumps) Pressing the SEL and UP keys simultaneously for 5 seconds activates forced defrost of the unit.
1 Technical Information 1.13 Operating instructions 1.13.2 Operating instructions µC2 (YLCA 50, 60 and 80) DESCRIPTION OF THE CONTROL UNIT This is a multipurpose controller specially programmed for use with air-water chillers and heat pumps equipped with a tandem compressor, two power stages and a single cooling circuit. Main functions • Water temperature control (at inlet or outlet, as per parameter r6). • Defrost cycle management. • System operating and safety management. • Fan speed control.
1 Technical Information Operating instructions 1.13 Direct Level Accessible without a password. Allows for reading of the values detected by the sensors, as well as other system values. Can be used by the user without affecting unit operation. General Modification of the parameters that affect basic unit configuration should be made with the controller in Standby position.
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Symbols on the display The display has three figures in green, plus the sign and one decimal. It also shows the symbols of the functions selected in orange (the alarm symbol is red).
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Parameters relating to sensors Parameters relating to sensors Display /01 Description NTC B1 sensor (water inlet): 0= Absent (function not available Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Operating graphics Min. operating time of a compressor A Signal B Compressor Min. stoppage time of a compressor A Signal B Compressor Min.
Technical Information 1 Operating instructions 1.13 Min.
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Parameters relating to fans Parameters relating to fans Parameters F01 Description Fan outlet: 0= Absent (function not available Level VS F Unit Max. Min.
1 Technical Information 1.13 Operating instructions Antifreeze control configuration parameters Antifreeze control configuration parameters Parameters Description Level VS Unit Max. Min.
Technical Information 1 Operating instructions 1.13 Unit configuration parameters Unit configuration parameters Display H01 Description Unit model: 2= Water chiller 3= Air-water heat pump Level VS Unit Max. Min. Value F 54 (R/W) 2 H02 Number of vent circuits (do not modify this parameter) F 12 (R/W) 0 H03 No. of evaporating units present (do not modify this parameter) F 13 (R/W) 0 H04 No.
1 Technical Information 1.13 Operating instructions Alarm configuration parameters Alarm configuration parameters Parameters Level VS Unit Max. Min. Value P01 Alarm delay by flow switch at start-up. U 63 (R/W) Seconds 150 0 20 P02 Alarm delay by flow switch with unit in operation. U 64 (R/W) Seconds 120 0 5 P03 Alarm delay by low-pressure switch at start-up.
Technical Information 1 Operating instructions 1.13 Controller configuration parameters Controller configuration parameters Display Level VS Unit Max. Min. Value r01 Cool cycle set point temperature U 41 (R/W) °C r14 r13 12 r02 Cool set point temperature differential U 42 (R/W) °C 50 0,3 2 F 78 (R/W) 2 0 2 F 79 (R/W) 4 0 0 r05 Description Compressor rotation 0= Disabled 1= FIFO type 2= Per operating hours Type of adjustment 0= Proportional. Input temperature.
1 Technical Information 1.13 Operating instructions Alarm table Alarm table Display Reset A1 Antifreeze alarm Aht High temperature at start-up (if activated, P20=1) Automatic ALt Low temperature at start-up (if activated, P20=1) Automatic E1 B1 sensor Automatic E2 B2 sensor Automatic E3 B3 sensor Automatic E4 B4 sensor Automatic ELS Low supply voltage Automatic EHS High supply voltage Automatic EPr Eprom. error. Unit operating. Automatic EPb Eprom. error.
1 Technical Information Operating instructions 1.13 Functions Alarm reset Pressing the UP and DOWN keys for 5 seconds cancels alarms present in the memory. At the same time, the alarm message disappears from the display and the alarm relay is deactivated. Clearing hour counters While reading compressor or pump (c10, c11 and c15) operating hours, said counters can be cleared by pressing the UP and DOWN keys simultaneously.
1 Technical Information 1.13 Operating instructions 1.13.3 Operating instructions µC2 (YLHA 50, 60 and 80) DESCRIPTION OF THE CONTROL UNIT This is a multipurpose controller specially programmed for use with air-water chillers and heat pumps equipped with a tandem compressor, two power stages and a single cooling circuit. Main functions • Water temperature control (at inlet or outlet, as per parameter r6). • Defrost cycle management. • System operating and safety management. • Fan speed control.
1 Technical Information Operating instructions 1.13 User Level Accessible with password 22. Allows access to all parameters the user normally sets. Direct Level Accessible without a password. Allows for reading of the values detected by the sensors, as well as other system values. Can be used by the user without affecting unit operation. General Modification of the parameters that affect basic unit configuration should be made with the controller in Standby position.
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Symbols on the display The display has three figures in green, plus the sign and one decimal. It also shows the symbols of the functions selected in orange (the alarm symbol is red).
1 Technical Information 1.
Technical Information 1 Operating instructions 1.13 Parameters relating to sensors Parameters relating to sensors Display /01 Description NTC B1 sensor (water inlet): 0= Absent (function not available Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Parameters relating to the compressor Parameters relating to the compressor Display 90 Description Level VS Unit Max. Min.
Technical Information 1 Operating instructions 1.13 Operating graphics Min. operating time of a compressor A Signal B Compressor Min. stoppage time of a compressor A Signal B Compressor Min.
1 Technical Information 1.13 Operating instructions Min.
Technical Information 1 Operating instructions 1.
1 Technical Information 1.13 Operating instructions Parameters relating to fans Parameters relating to fans Parameters 94 Description Level VS F01 Fan outlet: 0= Absent (function not available) 1= Present F F02 Operating mode: 0= Always ON (function not available) 1= parallel to the compressor (function not available) 2= ON/OFF operation (function not availa‐ ble) 3= Parallel to compressor and speed ad‐ justment F03 F04 Max. Min.
Technical Information 1 Operating instructions 1.13 Parameters relating to defrost Parameters relating to defrost Parameters Description Level VS Unit Max. Min.
1 Technical Information 1.13 Operating instructions Antifreeze control configuration parameters Antifreeze control configuration parameters Parameters Description Level VS Unit Max. Min.
Technical Information 1 Operating instructions 1.13 Unit configuration parameters Unit configuration parameters Display H01 Description Unit model: 2= Water chiller Level VS Unit Max. Min. Value F 54 (R/W) 3 3= Air-water heat pump H02 Number of vent circuits (do not modify this parameter) F 12 (R/W) 0 H03 No. of evaporating units present (do not modify this parameter) F 13 (R/W) 0 H04 No.
1 Technical Information 1.13 Operating instructions Alarm configuration parameters Alarm configuration parameters Parameters Description Level VS Unit Max. Min. Value P01 Alarm delay by flow switch at start-up. U 63 (R/W) Seconds 150 0 20 P02 Alarm delay by flow switch with unit in operation. U 64 (R/W) Seconds 120 0 5 P03 Alarm delay by low-pressure switch at start-up.
Technical Information 1 Operating instructions 1.13 Controller configuration parameters Controller configuration parameters Display Level VS Unit Max. Min.
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1 Technical Information Operating instructions 1.13 Functions Alarm reset Pressing the UP and DOWN keys for 5 seconds cancels alarms present in the memory. At the same time, the alarm message disappears from the display and the alarm relay is deactivated. Forced defrost (heat pumps) Pressing the SEL and UP keys simultaneously for 5 seconds activates forced defrost of the unit.
1 Technical Information 1.13 Operating instructions 1.13.4 Operating instructions µC3 (YLCA / YLHA 100, 120 and 150) This is a specially programmed controller for air-water chillers and heat pumps with four capacity stages. These are divided into two independent cooling circuits equipped with two tandems that act upon a common water circuit. Both systems are equipped with two fans each, the speed of which is controlled by pressure sensors. The controller operates through the following intakes and outlets.
Technical Information 1 Operating instructions 1.
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1 Technical Information Operating instructions 1.13 Sensors and probes Pressure sensors (B3 and B4) One for each cooling circuit and connector to the coil collectors. They provide information to the system for fan speed adjustment in the summer and winter cycles, management of defrosts in the heat pumps, prevent and lockout functions of the system by excessively high pressure. NTC probes(B5 and B6) • B5- For the detection and control of water inlet temperature (cool only and heat pump units).
1 Technical Information 1.13 Operating instructions General diagram, (YLCA / YLHA 100,120 and 150) A Keyboard ‑ display terminal U Water outlet B Programme download key V Water inlet X Fan protection 12 D/J/C/I E/H Comp. 1/ Comp. 2 / Comp. 3 / Comp. 4 Pump 1/ Pump 2 K RS485 serial connection Y/A1/G1/ Protection comp. 1 / Protection comp. 2 / Protec‐ I1 tion comp. 3 / Protection comp. 4 Z/H1 HP1 / HP2 (High-pressure switch) L Phase (board power supply) C1 Fan 3.
Technical Information 1 Operating instructions 1.13 Start-up About 45 seconds after powering the unit, the start-up display is activated. Default language: English. 1st Display. START-UP (information on water temperature/unit status) • Water inlet temperature • Water outlet temperature • Unit status (ON/OFF) Press "down" to access the second display. 2nd Display. STATUS AND OPERATING MODE SELECTION Status selection ON/OFF (with ENTER, Up and Down).
1 Technical Information 1.13 Operating instructions -/- Configuration of sensors Range Units Value Sensor B3 calibration. Description Coil pressure circuit 1 -9,9/9,9 bar 0 Sensor B4 calibration. Coil pressure circuit 2 -9,9/9,9 bar 0 Sensor B5 calibration. Inlet water temp. to exchanger. -9,9/9,9 K 0 Sensor B6 calibration. Outlet water temp. to exchanger. -9,9/9,9 K 0 Sensor B7 calibration. Outdoor temperature -9,9/9,9 K 0 Sensor B8 calibration.
Technical Information 1 Operating instructions 1.13 -C- Compressor configuration Range Units Value Min. operating time of a compressor Description 0 / 9999 Seconds 120 Min.
1 Technical Information 1.13 Operating instructions -F- Condensation (fans) Description Type of fan control No. of condensers Range Units Value Temp. pressure ON/OFF - Pressure 2 1-2 - Fans - Inverter - Power supply frequency 50 / 60 Hz 50 PWM max. triac cut-off 0 / 100 % 92 PWM min.
Technical Information 1 Operating instructions 1.13 -H- Unit configuration Description Unit type Range 0‑7 Number of compressors/circuits Compressor rotation No. of evaporators Units Value - 2 (COOLER) 3 (HEAT PUMP) - 4/2 LIFO FIFO PERSONALISED TIME - FIFO 1 1‑2 - Driver number (EVD400) 0-1-2-4 - 0 Cycle inversion valve logic NO / NC - NC No. of pumps 1‑2 - 1 (SINGLE PUMP) 2 (TWO-PUMP ACCESSORY) Pump rotation START-UP TIME - TIME Pump operation ON WITH COMP.
1 Technical Information 1.13 Operating instructions -B- Inputs/Outputs Units Value Analogue input 3. Coil pressure circuit 1 (B3) Description Range bar INSTANT READ OUT Analogue input 4. Coil pressure circuit 2 (B4) bar INSTANT READ OUT Analogue input 5. Inlet water temperature (B5) °C INSTANT READ OUT Analogue input 6. Outlet water temperature (B6) °C 0 = OPEN C = CLOSED Digital input 1. External alarm O/C 0 = OPEN C = CLOSED Digital input 2.
Technical Information 1 Operating instructions 1.
1 Technical Information 1.13 Operating instructions µC3 functions F-r. Software version / Language selection • Read out of the µC3 software version and update date. • The Up, Down and Enter keys select the language: English or Italian. Temperature control Two different modes (Control Menu): 1 Adjustment by water temperature at the heat exchanger inlet (sensor B5). This control carries out a proportional type adjustment based on a set point and a proportional band distributed over 4 stages.
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1 Technical Information 1.13 Operating instructions • • 4-way valves (N13 and N14) Fans (Y3 and Y4) DefrOff Defrost end pressure DefrAct DefrOn Defrost start pressure t t 1...3 Partial times remain‐ ing in defrost start pressure zone Defrost active Time Antifreeze protection If the B6 temperature sensor (water outlet) detects a temperature below the antifreeze set temperature, the unit is blocked and in a state of alarm (manual reset).
1 Technical Information Operating instructions 1.13 Second pump A second pump can be enabled by means of the -H-unit config menu. To do this, install the contactor (pump 230-1-50) between terminals N8-N, and the corresponding protector (contact NC) between ter‐ minals Dl18-G0. This second pump will operate alternately with the first pump, taking into account the number of operating hours or start-up cycles.
1 Technical Information 1.13 Operating instructions Alarm table Description Serious alarm FC, PG Input ID1 Off circ.1 Off circ.2 Off fan Off pump Off sys X Reset MANUAL Delay Notes - general Phase con‐ trol protection Antifreeze alarm B6 X X X X X MANUAL - The pump can be run‐ ning in OFF mode. See antifreeza menu. Pump 1 heat switch Q5 ID4 X X X X X MANUAL - If available, pump 1 starts up. If not, the entire system stops.
Technical Information 1 Operating instructions 1.13 Description Input Off circ.1 Off circ.
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Technical Information 1 Wiring diagrams 1.14 1.14 Wiring diagrams 1.14.1 Unit wiring diagrams Wiring diagram, YLCA/YLHA 40, 400.3.
1 Technical Information 1.14 Wiring diagrams (*) 1* Alarm A Electronic control K1 Compressor contactor B The components in the box are standard accessories supplied by the manufacturer K2 Auxiliary heater contactor HTP Heater thermal protection C The components in the box are not supplied by the manufacturer K3 Pump contactor (TC units) D “B” mm2 Cu LAK Low ambient kit accessory a Green wire LP Low-pressure switch (2.
Technical Information 1 Wiring diagrams 1.14 Wiring diagrams YLCA 50, 60 and 80 (µC2), 400.3.
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Technical Information 1 Wiring diagrams 1.14 Wiring diagrams YLHA 50, 60 and 80 (µC2), 400.3.
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Technical Information 1 Wiring diagrams 1.
1 Technical Information 1.14 Wiring diagrams Wiring diagrams YLCA / YLHA 100, 120 and 150 (µC3) 400.3.
Technical Information 1 Wiring diagrams 1.
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Technical Information 1 Wiring diagrams 1.
