Installation and maintenance manual Manuel d'installation et de maintenance Installations- und Wartungshandbuch Manuale di installazione e di manutenzione Manual de instalación y de mantenimiento WQL-WQH-WQRC 20-190 English 21 193 kW 24 211 kW Français Deutsch Italiano Español Water Cooled Liquid Chillers - Water/Water Reverse Cycle Heat Pumps - Condenserless Units Refroidisseurs de Liquid à Condensation par l’Eau - Pompes à Chaleur Réversibles Eau/Eau Refroidisseurs de Liquid sans Condenseur Flu
1 - FOREWORD 7 - PRODUCT DESCRIPTION 1.1 Introduction...........................................................................2 7.1 General Information.............................................................29 1.2 Warranty...............................................................................2 7.2 Body and Frame..................................................................29 1.3 Emergency stop/Normal stop................................................2 7.3 Compressors.............
11--Introdução Foreword 1.1 Introduction 1.3 Emergency stop / Normal stop Units, manufactured to state-of-the-art design and implementation standards, ensure top performance, reliability and fitness to any type of air-conditioning systems. The emergency stop of the unit can be enabled using the master switch on the control panel (move down the lever). For a normal stop, press the relevant push-buttons.
English 2 - Safety 2.1 Foreword These units must be installed in conformity with the provisions of Machinery Directive 2006/42/EC, Pressure Equipment Directive 2014/68/EU, Electromagnetic Compatibility Directive 2014/30/EU, as well as with other regulations applicable in the country of installation. If these provisions are not complied with, the unit must not be operated.
2 - Safety (continued) disassemble connections, filters, joints or other line items 2.2 Definitions OWNER: means the legal representative of the company, body or individual who owns the plant where unit has been installed; he/she has the responsibility of making sure that all the safety regulations specified in this manual are complied with, along with the national laws in force.
connections, even for limited periods of time or in an emergency n place a warning sign “do not turn on - maintenance in progress” on the external disconnecting switch n make sure that on-off remote controls are inhibited n wear suitable personal protective equipment (helmet, safety gloves, goggles and shoes etc.
2 - Safety (continued) 2.7 Safety labels Instruction for the movimentation - Outside the packaging Identification of the unit Outside, on the left -hand front column CODICE PRODOTTO NEUTRO PRODUCT CODE MODELLO MODEL 0425 MO.NO MATRICOLA SERIAL NO. ANNO DI COSTRUZIONE Manuf. Year REFR. CIRCUIT GWP 1 2 3 4 CHARGE (Kg) (tCO₂eq) PS (LATO ALTA / LATO BASSA) MIN. 5 cm bar PS (HIGH / LOW SIDE) TS (ALTA / BASSA) °C TS (HIGH / LOW) ALIM.
Electrical warning Adjacent to the master switch Grounding connection on the electrical board, adjacent to the connection ATTENZIONE ! ATTENTION ! ACHTUNG ! Prima di Enlever aprire togliere l’alimentation tensione electrique avant d’ouvrir CAUTION ! ATENCION ! Vor offnen des Disconnect Cortar la corrente antes gehauses electrical de abrir hauptschalter supply before el aparato ausschalten opening Commissioning - Outside, on the left-hand front column Read the instruction on the electrical board Fitti
2 - Safety (continued) Identification of refrigerant - Below identification of the unit Circuit drain - Outside, on the right-hand front column ATTENTION! Don’t leave the unit with water inside hydraulic circuit during winter or when it is in stand by. ATTENZIONE! Non lasciare l’unità con acqua nel circuito idraulico durante l’inverno o quando non è funzionante. ATTENTION! Ne laissez pas l’unitè avec de l’eau dans le circuit hydraulique pendant l’hiver ou quand elle ne travaille pas.
2.8 Safety regulations REFRIGERANT DATA Toxicity SAFETY DATA: R410A Low If sprayed, the refrigerant is likely to cause frost burns. If absorbed by the skin, the danger is very limited; it may cause a slight irritation, and the liquid is degreasing. Unfreeze the affected skin with water. Remove Contact with skin the contaminated clothes with great care - in the presence of frost burns, the clothes may stick to the skin. Wash with plenty of warm water the affected skin.
2 - Safety (continued) 2.8 Safety regulations (continued) REFRIGERANT DATA General precautions Respiratory system protection SAFETY DATA: R410A Do not inhale concentrated vapours. Their concentration in the atmosphere should not exceed the minimum preset values and should be maintained below the professional threshold. Being more weighty than the air, the vapour concentrates on the bottom, in narrow areas. Therefore, the exhaust system must work at low level.
2.8 Safety regulations (continued) LUBRICANT OIL DATA SAFETY DATA: POLYESTER OIL (POE) Classification Not harmful. Contact with skin May cause slight irritation. Does not require first aid measures. It is recommended to follow usual personal hygiene measures, including washing the exposed skin with soap and water several times a day. It is also recommended to wash your overalls at least once a week. Contact with eyes Wash thoroughly with a suitable solution or tap water.
3 - Transport, Handling and Storage WQL / WQH / WQRC units are supplied fully assembled and tested (except for accessories supplied loose in the units – absorbers, filter, etc.). They are ready to be installed and started on the field. Space requirements request to handling R410A units are only charged with liquid refrigerant and with oil in the quantity required for operation.
3.3 Anchoring n Minimum storage temperature is -25 °C. It is not essential to secure the unit to the foundations, unless in areas where there is a serious risk of earth-quake, or if the appliance is installed on the top of a steel frame. n Store the units in areas where minimum activity is likely to take place in order to avoid any risk of accidental damage. n Never use steam to clean the unit. 3.
4 - Installation 4.1 Positioning of the unit DANGER 4.2 Spring Isolator Installation Before installing the unit, make sure that the structure of the building and/or the supporting surface can withstand the weight of the appliance. The weights of the units are listed in Chapter 8 of this manual. n Prepare the base, that must be flat and plane. n Lift the appliance and insert shock absorbers as follows: These units have been designed for indoor installation on a solid surface.
4.3 Internal/external Water Circuit The expansion tank shall be dimensioned in such a way that it can absorb a 2% expansion of the total volume of the water in the plant (exchanger, pipelines, uses and storage tank, if available). The flow switch and the filter water, although not included in the supply, must always be fitted such as plant components. Their installation is mandatory for warranty.
4 - Installation (continued) WQL - WQH 20/45 HYDRAULIC SYSTEM BASIC D A 1 6 2 B E 5 4 8 INLET 7 5 C 8 COMPONENTS 1 Plate heat exchanger 2 Water filter 3 Water outlet 4 Water inlet 5 Globe valve 6 Flexible pipes 7 By-pass valve 8 Pressure point/drainage SAFETY/CONTROL DEVICES A Water differential pressure switch (50 mbar) B Inlet water temperature sensor C Outlet water temperature sensor D Vent valve E Thermometer Unit side Probes 16 6 E 3 OUTLET
English 4 - Installation (continued) WQL - WQH 20/45 HYDRAULIC SYSTEM 1P CONDENSER D A 1 2 7 3 E 6 B 5 9 INLET 8 6 C 9 COMPONENTS 1 Plate heat exchanger 2 Pump 3 Water filter 4 Water outlet 5 Water inlet 6 Globe valve 7 Flexible pipes 8 By-pass valve 9 Pressure point/drainage SAFETY/CONTROL DEVICES A Water differential pressure switch (50 mbar) B Inlet water temperature sensor C Outlet water temperature sensor D Vent valve E Thermometer Unit side Probes 17 7 E 4 OUTLET
4 - Installation (continued) WQL - WQH 20 / 45 HYDRAULIC SYSTEM 1P EVAPORATOR D A 1 2 8 3 E 7 B 6 10 INLET 9 7 C 10 4 COMPONENTS 1 Plate heat exchanger 2 Pump 3 Water filter 4 Pressure expansion tank 5 Water outlet 6 Water inlet 7 Globe valve 8 Flexible pipes 9 By pass valve 10 Pressure point/drainage SAFETY/CONTROL DEVICES A Water differential pressure switch (50 mbar) B Inlet water temperature sensor C Outlet water temperature sensor D Vent valve E Thermometer Unit side Probes 18 8 E
English 4 - Installation (continued) WQL - WQH 50 / 190 HYDRAULIC SYSTEM BASIC A 1- C 6 2 B E 5 4 8 INLET 7 5 C 8 A 1- E 6 6 2 B 3 E E OUTLET 5 4 8 INLET 7 5 C 8 COMPONENTS 1C Condenser 1E Evaporator 2 Water filter 3 Water outlet 4 Water inlet 5 Globe valve 6 Flexible pipes 7 By pass valve 8 Pressure point/drainage SAFETY/CONTROL DEVICES A Water differential pressure switch (50 mbar) B Inlet water temperature sensor C Outlet water temperature sensor D Vent valve E Thermometer U
4 - Installation (continued) WQL - WQH 50 / 190 HYDRAULIC SYSTEM 1P CONDENSER 1P EVAPORATOR F D A 2 1- C 8 3 B E 7 6 10 9 7 C 10 F D A 1- E 8 5 E OUTLET 4 2 8 3 E 7 B 6 10 9 10 SAFETY/CONTROL DEVICES A Water differential pressure switch (50 mbar) B Inlet water temperature sensor C Outlet water temperature sensor D Vent valve E Thermometer F Water safety valve (6BAR) Unit side Probes 20 INLET 7 C COMPONENTS 1C Condenser 1E Evaporator 2 Pump 3 Water filter 4 Pressure expans
English 4 - Installation (continued) WQL - WQH 50 / 190 HYDRAULIC SYSTEM 2P CONDENSER 2P EVAPORATOR D A 10 2 F 8 3 1- C B 2 E 7 6 11 INLET 9 10 7 C 11 D A 10 2 F 8 OUTLET 4 1- E 8 3 B 5 E E 7 6 2 INLET 11 9 7 10 C 11 COMPONENTS 1C Condenser 1E Evaporator 2 Pump 3 Water filter 4 Pressure expansion tank 5 Water outlet 6 Water inlet 7 Globe valve 8 Flexible pipes 9 By pass valve 10 Non-return valve 11 Pressure point/drainage SAFETY/CONTROL DEVICES A Water differentia
4 - Installation (continued) 4.4 Water connections WARNING It is important that the appliance is grounded. The attachments at the water inlet and outlet shall be connected in compliance with the instructions which can be found on the labels in the proximity of the attachments. DANGER Connect the water lines of the plants with the attachments of the unit whose diameters and positions are shown by Chapter 8. DANGER 4.
4.6 Electrical connections The maximum % value of these differences (unbalance) must not exceed 2% of the mean voltage. The unit must be installed on site according to the Machinery Directive 2006/42/EC, Electromagnetic Compatibility Directive 2014/30/EU and the usual procedures and standards applicable in the place of installation. If the unbalance is unacceptable, contact the Energy Distributor to solve this problem.
4 - Installation (continued) Electrical Connections * Terminals block “05A” - “05”: Condenser flow switch terminals as a standard Terminals block “06” - “07”: Condenser flow switch terminals for well water application 24
WARNING The unit must be started for the first time by personnel suitably trained by one Authorised Service Centre. Failure to meet this requirement will immediately void the warranty. n Start the pump and check that the water flow is correct. n Set the desired fluid temperature on the control board. n Start the appliance (see Chapter 6). n Check the correct direction of rotation of compressors. Scroll compressors cannot compress the refrigerant when they rotate in the opposite direction.
6 - Control 6 General information Introduction This document contains the information and the operating instructions for WQL/WQH/WQRC units.
ICON / COLOR STEADY ICON 4) Program → define parameters, functions, password and to display alarm log BLINKING ICON / RED - Alarm ON - Alarm QUIT / GREEN - Mode: HEATING - Antifreeze+Heat pump ON - Heating mode by remote / GREEN - Mode: COOLING - Cooling mode by remote / GREEN - Mode: STAND-BY - Stand-by mode by remote / GREEN / / / GREEN - Configurable - Configurable / RED - Current HR - Time slots activ.
6 - Control (continued) 6.
7 General Description 7.4 Refrigeration circuits The refrigeration circuit is provided with a thermostatic expansion valve, dehydrating cartridge filter, sight glass with a colour-change humidity indicator, HP and LP pressure switches. 7.1 Introduction The new range of water cooled chillers, includes 14 different capacities, fit for medium-sized residential, commercial and industrial applications.
7 - General Description (continued) WQL 20 - 45 Refrigeration System AT 1 S A S B 2 C COMPONENTS 1 Compressor 2 Condenser 3 Drier filter 4 Sight glass 5 Mechanical expansion valve 6 Evaporator 7 Electronic expansion valve 6 D G E H S F 5 S 4 3 MECHANICAL EXPANSION VALVE (STANDARD) SUCTION LINE ST UNIT CONTROL SAFETY / CONTROL DEVICES A High pressure switch (42 Bar) B Low pressure switch (2 Bar) AT High pressure transducer (optional) BT Low pressure transducer ST Suction temperature p
WQL 50 - 190 Refrigeration System 8 COMPONENTS 1 Compressor 2 Condenser 3 Drier filter 4 Sight glass 5 Mechanical expansion valve 6 Evaporator 7 Electronic expansion valve 8 Desuperheater 1 I AT S A S B OIL EQUAL. 2 C 6 D G E H S F 5 S 4 3 MECHANICAL EXPANSION VALVE (STANDARD) SUCTION LINE ST UNIT CONTROL SAFETY / CONTROL DEVICES A High pressure switch (40.
7 - General Description (continued) 7.8 Accessories Pumps Water Filter Min. 100 kPa head pressure pump be mounted as an option both evaporator and condenser side (sizes 20 to 45). 1-1/2” filter (20-45 units) and 2-1/2” filter (50-190 units) is supplied loose and has to be mounted by the customer. (both evaporator and condenser side) One or two 100-150 [kPa] head pressure pump can be mounted as an option (1/2P-SP) both evaporator and condenser side (sizes 50 to 190).
English 7 - General Description (continued) Domestic hot water kit Additional heating device kit It is provided as an accessory to allow the unit managing the control of a 3 ways valve, in order to switch water flow from plant to boiler. It is provided as an option/accessory to allow the unit managing the control of an additional heating device (a boiler in example), in order to integrate the production of hot water.
7 - General Description (continued) Climatic control kit It is provided as an accessory to allow the unit managing the control of water temperature, according outdoor air temperature. Connect outdoor air temperature probe terminals to terminal AIE5 - GND on the electrical box (refer to Chapt. 4).
English 8 - Technical Data 8.
8 - Technical Data (continued) 8.
WQH 20-45 20 Number of refrigerant circuits Part load steps Power supply 25 30 English 8 - Technical Data (continued) 35 40 45 1 1 1 1 1 1 0-100 0-100 0-100 0-100 0-100 0-100 Direct Direct Direct Direct Direct Direct kg 3,0 3,1 3,1 3,4 3,2 5,5 tCO2eq 6,3 6,5 6,5 7,1 6,7 11,5 1 1 1 1 1 1 90 90 90 1 1 1 % V/ph/Hz Startup type 400V/3/50Hz REFRIGERANT Type / GWP Charge (1) R410A / 2088 COMPRESSORS Number Type Crankcase heater Scroll W 70 90 90 1 1
8 - Technical Data (continued) WQRC 20-45 20 Number of refrigerant circuits Part load steps Power supply 25 30 35 40 45 1 1 1 1 1 1 0-100 0-100 0-100 0-100 0-100 0-100 Direct Direct Direct Direct Direct Direct kg 2,8 2,8 2,8 2,8 2,9 5,2 tCO2eq 5,8 5,8 5,8 5,8 6,1 10,9 1 1 1 1 1 1 90 90 90 1 1 1 % V/ph/Hz Startup type 400V/3/50Hz REFRIGERANT Type / GWP Charge (1) R410A / 2088 COMPRESSORS Number Type Crankcase heater Scroll W 70 90 90 1 1 1 EVA
WQL 50-190 50 Number of refrigerant circuits Part load steps Power supply 60 75 90 120 English 8 - Technical Data (continued) 150 170 190 1 1 1 1 1 1 1 1 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 Direct Direct Direct Direct Direct Direct Direct kg 4,4 5,7 6,9 8,3 11,3 13,8 15,5 18,1 tCO2eq 9,2 11,9 14,4 17,3 23,6 28,8 32,4 37,8 2 2 2 2 2 2 2 2 120+120 150+150 150+150 150+150 1 1 1 1 % V/ph/Hz Startup type 40
8 - Technical Data (continued) WQH 50-190 50 Number of refrigerant circuits Part load steps Power supply 60 75 90 120 150 170 190 1 1 1 1 1 1 1 1 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 Direct Direct Direct Direct Direct Direct Direct kg 6,0 6,0 7,2 8,6 11,8 14,3 16,0 18,6 tCO2eq 12,5 12,5 15,0 18,0 24,6 29,9 33,4 38,8 2 2 2 2 2 2 2 2 120+120 150+150 150+150 150+150 1 1 1 1 % V/ph/Hz Startup type 400V/3/50H
WQRC 50-190 50 Number of refrigerant circuits Part load steps Power supply 60 75 90 120 English 8 - Technical Data (continued) 150 170 190 1 1 1 1 1 1 1 1 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 Direct Direct Direct Direct Direct Direct Direct kg 4,4 5,7 6,9 8,3 11,3 13,8 15,5 18,1 tCO2eq 9,2 11,9 14,4 17,3 23,6 28,8 32,4 37,8 1 1 1 1 1 1 1 1 120+120 150+150 150+150 150+150 1 1 1 1 % V/ph/Hz Startup type 4
8 - Technical Data (continued) 8.3 Unit electrical data WQL/WQH/WQRC Rated voltage Max. absorbed power 20 25 30 V/ph/Hz 35 40 45 400 (± 10%) / 3 / 50 kW 8,3 10,0 11,6 13,1 14,8 17,0 Rated current A 9,3 12,1 14,2 13,5 15,5 21,4 Max. current FLA A 15,0 18,2 21,6 25,0 31,0 34,0 Max. start-up current LRA A 101,0 128,0 139,0 118,0 140,0 174,0 A 25 25 32 32 40 40 mm2 6 6 10 10 10 10 External fuses Max.
English 8 - Technical Data (continued) Compressors electrical data WQL/WQH/WQRC Number 20 25 30 35 40 45 1 1 1 1 1 1 - Nominal power input kW 4,6 5,8 6,7 7,4 8,5 10,1 Max. absorbed power kW 8,3 10,0 11,6 13,1 14,8 17,0 Rated current A 9,3 12,1 14,2 13,5 15,5 21,4 Max.
8 - Technical Data (continued) 8.4 Hydraulic features WQL/H/RC 300 20-45 available static pressure - internal heat exchanger (1P/E) 275 300 250 275 20-25-30 225 250 45 20-25-30 200 225 45 H [kPa] 175 200 35 150 175 125 150 35 100 125 40 75 100 50 75 40 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 English 8 - Technical Data (continued) H [kPa] WQL/H/RC 50-190 available static pressure - internal heat exchanger (1/2P SP/E) 250 250 225 225 200 200 175 175 150 150 125 125 100 100 75 75 50 50 25 25 0 0 0 0 0.5 0.5 1 1 1.5 1.5 2 2 2.5 2.5 90 90 60 60 50 50 3 3 170 170 150 150 120 120 75 75 3.5 3.5 4 4 4.5 4.5 190 190 5 5 5.5 5.5 6 6 6.5 6.5 7 7 7.5 7.5 8 8 8.5 8.5 9 9 9.5 9.5 10 10.5 11 11.5 12 10 10.5 11 11.
0 0 0 0.5 0.5 1 1 1.5 1.5 2 2 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5 5.5 5.5 6 6 6.5 6.5 7 7 7.5 7.5 8 8 8.5 8.5 9 9 9.5 10 10.5 11 12.5 12 11.5 13 13.5 14 9.5 10 10.5 11 12.5 12 11.5 13 13.5 14 8 - Technical Data (continued) H [kPa] WQL/H/RC 50-190 available static pressure - internal heat exchanger (1/2P HP/E) 350 350 325 325 300 300 275 275 250 250 225 225 200 200 175 175 150 150 125 125 100 100 75 75 50 50 25 25 0 0 60 60 50 50 90 90 190 190 150 150 120 120 75 75 0 0 0.5 0.
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 150 8 8.5 9 9.5 10 10.5 11 12.5 12 11.5 13 13.5 14 8 - Technical Data (continued) 20-25-30-35 120 150 105 135 90 120 40 45 40 45 40 45 English 20-25-30-35 135 DP [kPa] WQL/H/RC 20/45 - internal heat exchanger pressure drop 75 105 60 90 150 45 75 135 30 60 120 15 45 105 300 90 15 0.5 75 0 60 0.5 45 20-25-30-35 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.
20 0 10 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 8 - Technical Data (continued) WQL/H 50/190 - external heat exchanger pressure drop 130 50 DP [kPa] 120 130 110 120 100 110 90 100 80 90 70 80 60 70 50 60 40 50 30 40 20 30 10 20 0 10 0 50 60 75 90 120 60 75 90 120 150 170 190 150 170 190 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.
English 8 - Technical Data (continued) 8.
WQRC WQH WQL 8 - Technical Data (continued) WQL/WQH/WQRC 50-190 (BASIC UNIT) 50 60 75 90 120 150 170 190 50 60 75 90 120 150 170 190 50 60 75 90 120 150 170 190 Weight distribution (kg) Operating Shipping P1-P4 coordinates CG coordinates P1 P2 P3 P4 weight (kg) weight (kg) a (mm) b (mm) x (mm) y (mm) 114 127 138 150 212 240 255 275 117 130 143 155 217 247 262 282 94 101 110 117 173 191 202 214 123 53 62 131 55 59 138 58 57 145 60 55 224 74 86 249 84 93 260 90 95 273 100 98 124 56 63 132 58 60 139 62 5
WQL/WQH/WQRC Weight distribution (kg) Operating Shipping P5-P8 coordinates CG coordinates 50-190 (HYDRONIC OPTIONS) P5 P6 P7 P8 weight (kg) weight (kg) a (mm) b (mm) x (mm) y (mm) 90 1P SP/E → one pump / standard pressure / evaporator 1P SP/C → one pump / standard pressure / condenser 2P SP/E → two pumps / standard pressure / evaporator 2P SP/C → two pumps / standard pressure / condenser 1P HP/E → one pump / high pressure / evaporator 1P HP/C → one pump / high pressure / condenser 2P HP/E → two pumps / hi
8 - Technical Data (continued) WQL/WQH/WQRC Weight distribution (kg) Operating Shipping P5-P8 coordinates CG coordinates 50-190 (HYDRONIC OPTIONS) P5 P6 P7 P8 weight (kg) weight (kg) a (mm) b (mm) x (mm) y (mm) 190 1P SP/E → one pump / standard pressure / evaporator 1P SP/C → one pump / standard pressure / condenser 2P SP/E → two pumps / standard pressure / evaporator 2P SP/C → two pumps / standard pressure / condenser 1P HP/E → one pump / high pressure / evaporator 1P HP/C → one pump / high pressure / co
English 8 - Technical Data (continued) 8.
8 - Technical Data (continued) 8.6 Dimensional drawings - WQL/WQH/WQRC 50-190 (without hydrokit) Side view Side view Front view Rear-view A E F B D C ø 45 187 45 1200 846 25 659 36 35 159 678 H 844 1363 1496 G P4 P2 796 Lost view P3 25 300 A B C D G, H E, F Control display Main switch Auxiliary lines, electrical connection Gauge kit Internal heat exchanger connections Ø2 1/2” VIC (Ø76.1 MM) External heat connections Ø2 1/2” VIC (Ø76.1 MM) WATER CONNECTIONS INT. H.E. EXT. H.
English 8 - Technical Data (continued) 8.
8 - Technical Data (continued) 8.
DANGER When the recovered refrigerant cannot be reused, return it to the manufacturer. Do not throw away the waste oil of the compressor, because it contains refrigerant in solution. DANGER The waste oil must be returned to the manufacturer.
9 - Maintenance (continued) 9.3 Refrigerant charge 9.5 Condenser Do not inject refrigerant liquid into the LP side of the circuit. Be very careful, and charge the circuit properly. If the charge is insufficient, the efficiency of the unit will be lower than expected. (In the worst of cases the LP transducer may stop the unit.) Check at regular intervals that the water side of the heat exchanger is perfectly clean.
9.8 Mechanical expansion valve 9.9 Evaporator The circuit of the unit is equipped with a mechanical expansion valve, with external equalizer Check at regular intervals that the water side of the heat exchanger is perfectly clean. To do this, measure the pressure drop, water side (see Section 8) or measure the temperature of the liquid leaving and entering the heat exchanger, and compare it to the evaporation temperature. The valve is factory calibrated for an overheating of 5 °C.
10 - Troubleshooting The table below lists the anomalies of operation of the unit, the relevant causes and the corrective measures. For anomalies of any other type or not listed, contact one of authorised Service Centre for technical assistance. Anomaly Cause Operation The unit continues to work, but without cooling Insufficient charge of refrigerant. Refill. The dehydrating filter is clogged. Replace. Ice on the suction line Wrong calibration of overheating. Excessive noise Increase overheating.
English 11 - Spare Parts 11.1 Spare part list The table below shows the list of spare parts recommended during the first two years of operation. Component Number Pump 1 Differential pressure switch 1 High pressure transducer 1 Low pressure transducer 1 Expansion valve 1 Gas filter 1 4 way valve 1 Electronic main board 1 Auxiliary circuit trasformer 1 Compressor contactor 2 Pump contactor 1 Water sensor 4 Auxiliary contact 4 Driver EEV 1 Fuses 4 11.
12 - Dismantling, Demolition and Scrapping After draining operations, the piping of the hydraulic networks can be disconnected and disassembled. During the draining of the refrigeration circuits, do not let the refrigerant overflow in the surrounding atmosphere. DANGER Once they have been disconnected as specified, the packaged units can be disassembled in a single piece.
63 English Note
Note 64
65 English Note
Systemair srl Via XXV Aprile, 29 20825 Barlassina (MB) Italy Tel. +39 0362 680 1 Fax +39 0362 680 693 www.systemair.com As part of our ongoing product improvement programme, our products are subject to change without prior notice. Non contractual photos. Dans un souci d’amélioration constante, nos produits peuvent être modifiés sans préavis. Photos non contractuelles. In dem Bemühen um ständige Verbesserung können unsere Erzeugnisse ohne vorherige Ankündigung geändert werden.
