Air-condensed water chillers and heat pumps YLCA / YLHA 40 User manual Ref.
Index Index 1 User manual ............................................................................................................................1 1.1 1.1.1 1.1.2 1.2 1.2.1 1.2.2 General description of the unit.................................................................................................2 Models available and capacities...............................................................................................2 Technical specifications.........................................
1 User manual
1 1.1 User manual General description of the unit 1.1 General description of the unit The YLCA/YLHA units are high-performance air-water chillers and heat pumps using R-410A ecological refrigerant. These units are designed for air conditioning or industrial applications that require cold or hot water. They are silent and compact units, equipped with vertical air discharge axial fans, that can be installed directly outdoors.
User manual General description of the unit 1 1.1 1.1.2 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. Sheeting casing The units are made of galvanized steel sheeting and anticorrosion nuts and bolts. Panels can be removed for access to internal components.
1 1.1 User manual General description of the unit 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.
User manual General description of the unit 1 1.1 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 100 with hydro kit.
1 1.1 User manual General description of the unit 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.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2 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. • Alarm management.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 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.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.2 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).
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.4 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.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.6 Operating graphics Min. operating time of a compressor A Signal B Compressor Min. stoppage time of a compressor A Signal B Compressor Min.
1 1.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.7 Parameters relating to fans Parameters relating to fans Display F01 Description Fan outlet: 0= Absent (function not available Level VS F Unit Max. Min.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.8 Parameters relating to defrost Parameters relating to defrost Parameters d01 Description Defrost operation: 0= Absent (function not available Level VS Unit Max. Min.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.9 Antifreeze control configuration parameters Antifreeze control configuration parameters Parameters Description Level VS Unit Max. Min.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.10 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.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.11 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.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.12 Controller configuration parameters Controller configuration parameters Display Description Level VS Unit Max. Min.
User manual Operating instructions µC2 (YLCA/YLHA 40) 1 1.2 1.2.
1 1.2 User manual Operating instructions µC2 (YLCA/YLHA 40) 1.2.14 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.
User manual Regular maintenance activities for which the user is responsible 1 1.3 1.3 Regular maintenance activities for which the user is respon‐ sible 1.3.1 Maintenance Schedule The air conditioning unit is designed to require as little maintenance as possible. Nevertheless, to ensure smooth operations with a minimal use of electricity, a long working life and compliance with the regula‐ tions of each country, regular maintenance inspections must be made. Johnson Controls Inc.
1 1.3 User manual Regular maintenance activities for which the user is responsible DANGER It is strictly prohibited for the user to carry out any maintenance or upkeep tasks on the HVAC unit. This appliance is not destined for use by people (including children) with limited physical, sensorial or mental capacities, or without adequate experience or knowledge, unless they have received instructions or been supervised in the use of the appliance by an individual responsible for their safety.
