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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.
They are available in two versions: with and without a hydro kit, which includes a buffer tank and a high

head pressure pump.
The control system of these units is a specially programmed electronic controller to be used on air-water

chillers and heat pumps equipped with tandem compressors. Easy to use and safe, these units precision

control the water return temperature of the installation, carry out defrost cycles, modulate fan speeds

and control compressor, pump and electric heater start-up. By reading the control sensors and safety

elements, the controller protects the entire equipment against malfunctions. The system allows con‐

necting the unit to a standard RS485 monitoring network.
For further information, please see Operating Instructions.
The YLCA/YLHA units are made of proven quality components and manufactured in compliance with

standards in force (ISO 9001 certification).

1.1.1 Models available and capacities

Cool-only

model

YLCA 40

YLCA 50

YLCA 60

YLCA 80

YLCA 100 YLCA 120 YLCA 150

Cooling ca‐

pacity

39,6

52,1

60,5

77,6

99

119

151

Heat pump

model

YLHA 40

YLHA 50

YLHA 60

YLHA 80

YLHA 100 YLHA 120 YLHA 150

Cooling ca‐

pacity

37,8

52

60,5

72,2

96

114

145

Heating ca‐

pacity

38,6

52,5

59,6

74,7

104

119,6

150

Cooling capacities in kW for 12/7 °C water input /output temperature and 35°C ambient temperature.
Heating capacities in kW for 40/45 °C water input /output temperature and 7°C ambient temperature.

1

User manual

1.1

General description of the unit

2

Summary of Contents for YLHA 50

Page 1: ...Air condensed water chillers and heat pumps YLHA 50 60 and 80 User manual Ref N 40290_EN 1110...

Page 2: ...5 Parameters relating to the compressor 13 1 2 6 Operating graphics 14 1 2 7 Parameters relating to fans 17 1 2 8 Parameters relating to defrost 18 1 2 9 Antifreeze control configuration parameters 1...

Page 3: ...1 User manual...

Page 4: ...compressor pump and electric heater start up By reading the control sensors and safety elements the controller protects the entire equipment against malfunctions The system allows con necting the uni...

Page 5: ...anically expanded within the fin assembly Fans Of the axial and low sound level type Equipped with single phase motors with IP54 protection These motors allow speed control by means of a phase cut out...

Page 6: ...n 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 Also in...

Page 7: ...mote control unit with keyboard for cool heat and ON OFF functions Includes power supply alarm and cool heat LEDs Maximum cable length 50 m Remote terminal For total access and control of the system b...

Page 8: ...to sit This base must be solid and dimensioned in accord ance with the load to be supported The antivibratory support accessory for models YL CA YLHA 40 50 and 60 includes 4 units whereas for models...

Page 9: ...fied and the system can also be supervised Expansion and control module for the second compressor This is an expansion of the base module to which it should be connected by means of two cables It cont...

Page 10: ...llows 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...

Page 11: ...set point D K Compressor 1 Compressor 2 B4 B8 Radiometric pressure sensor Fan speed and de frost control E Alarm ID1 Remote COOL HEAT Water flow control F 230 24 transformer ID2 Fan heat switches G Fa...

Page 12: ...Direct parameters Press for 5 seconds Selects a Direct parameter and shows its value Confirms parameter changes Press once 3 6 Parameter programming with password Press for 5 seconds 4 Selection of hi...

Page 13: ...ssure switch HP D NTC water outlet sensor B2 K Four way valve E Indoor heat exchanger L Outdoor heat ex changer F NTC water inlet sensor B1 M Pressure sensor B4 Parameter tables The following tables s...

Page 14: ...1 Minimum pressure F 1 R W bar 12 0 0 12 Maximum pressure F 2 R W bar 99 9 11 45 13 B1 sensor calibration F 3 R W C 12 12 0 14 B2 sensor calibration F 4 R W C 12 12 0 15 B3 sensor calibration F 5 R W...

Page 15: ...Start up timing U 30 R W Seconds 999 0 10 c07 Compressor start up delay with regard to the pump U 31 R W Seconds 150 0 20 c08 Pump stoppage delay with regard to the compressor U 32 R W Minutes 150 0...

Page 16: ...erating time of a compressor A Signal B Compressor Min stoppage time of a compressor A Signal B Compressor Min time between compressor start ups A Signal B Compressor 1 User manual 1 2 Operating instr...

Page 17: ...1 C Compressor 1 B Signal 2 D Compressor 2 Time between stoppage of two compressors A Signal 1 C Compressor 1 B Signal 2 D Compressor 2 Compressor pump stoppage delays A Compressor B Pump User manual...

Page 18: ...Pump compressor start up delays A Pump B Compressor 1 User manual 1 2 Operating instructions C2 YLHA 50 60 and 80 16...

Page 19: ...cle maximum speed pressure dif ferential F 26 R W bar 50 0 3 7 F07 Cool cycle fan stoppage pressure differen tial F 28 R W bar 50 0 6 5 F08 Heat cycle minimum speed pressure F 30 R W bar 80 40 8 7 F09...

Page 20: ...defrost duration U 38 R W Seconds 150 0 0 d07 Maximum defrost duration U 39 R W Minutes 15 1 6 d08 Time between two defrost cycles U 40 R W Minutes 150 10 30 d11 Activation of heaters during defrost...

Page 21: ...6 R W 1 0 0 A07 Minimum level antifreeze control set point temperature U 15 R W C 79 40 3 A08 Heating heater activation set point tempera ture U 16 R W C r15 A01 3 A09 Heating heater deactivation set...

Page 22: ...ital input 0 Absent 1 Present U 14 R W 1 0 0 H07 ON OFF digital input 0 Absent 1 Present U 15 R W 1 0 0 H08 Network configuration do not modify this parameter F 57 R W 3 0 2 H09 Keyboard locked 0 Disa...

Page 23: ...t 1 for remote Cool Heat selection Do not modify this parameter F 69 R W 9 P09 Digital input 2 for Fan heat protector function F 70 R W 6 P10 Digital input 6 for function Not used 0 P11 Digital input...

Page 24: ...r06 4 only Maximum activation time Output tem perature F 80 R W Seconds 999 r09 120 r09 If r06 4 only Minimum activation time Output tem perature F 81 R W Seconds 999 c04 100 r10 If r06 4 only Maximum...

Page 25: ...oltage Automatic EHS High supply voltage Automatic EPr Eprom error Unit operating Automatic EPb Eprom error At start up Automatic ESP Communication failure with expansion module Automatic EL 1 2 Probl...

Page 26: ...erminals D5 and B on the connecting strip To activate said inlet a value of 1 should be given to parameter H07 H07 1 With this inlet open the unit is OFF when closed the unit is ON This option does no...

Page 27: ...tasks have been grouped by time intervals in a series of tables Maintenance responsibilities of the user see on page 25 1 3 2 Maintenance responsibilities of the user Like any other machine the HVAC...

Page 28: ...ts They should also be aware of general procedures and those applying specifically to this unit Contact a Johnson Controls Inc Authorised Technical Assistance Service for scheduled maintenance on this...

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