York YLCD Series User manual

Air-condensed water coolers and
centrifugal heat pumps YLCD/YLHD
40 to 70
User manual
Ref.: N-40412_EN 0112

Index
1User manual.............................................................................................................................1
1.1 General information..................................................................................................................2
1.1.1 Product nomenclature..............................................................................................................2
1.1.2 General description of the unit.................................................................................................2
1.1.3 Models available and capacities...............................................................................................3
1.1.4 Features and advantages.........................................................................................................4
1.1.5 Technical specifications...........................................................................................................4
1.2 Safety instructions....................................................................................................................7
1.3 Icons used in this document.....................................................................................................8
1.4 Instructions for storage, transport, loading and unloading of the unit......................................8
1.4.1 Inspection.................................................................................................................................9
1.4.2 Disposal of packaging..............................................................................................................9
1.4.3 Disposal of the unit...................................................................................................................9
1.4.4 Handling...................................................................................................................................9
1.5 Operating instructions..............................................................................................................9
1.5.1 Operating instructions µC2 (YLCD 40 and 70).........................................................................9
1.5.2 Operating instructions µC2 (YLHD 40 and 70).......................................................................25
1.6 Regular maintenance activities for which the user is responsible..........................................42
1.6.1 Maintenance Schedule...........................................................................................................42
1.6.2 Maintenance responsibilities of the user................................................................................42
Index
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1
User manual

1.1 General information
1.1.1 Product nomenclature
Air-water cooler with centrifugal fans / Air-water heat pump with centrifugal fans
Nominal cooling capacity in kW
Voltage
T: Three-phase (400.3.50)
-: Hydro kit (pack) not included
P: Hydro kit (pack) included
C: Water circulation pump included
-
P
YLCD / YLHD 70 T C
1.1.2 General description of the unit
The YLCD/YLHD units are high-performance air-water coolers and heat pumps with centrifugal fan that
use R-410A ecological coolant.
These units are designed for air conditioning or industrial applications that require cold or hot water and
air pressure available for installations with ducts.
They are silent and compact units, equipped with vertical or horizontal discharge centrifugal fans, that
can be installed indoors and that accept outdoor installation.
They are available in two versions: with and without a hydro kit, which includes a buffer tank (except size
25) and a high head pressure pump.
The control system of these units is a specially programmed electronic controller to be used on air-water
coolers and heat pumps equipped with tandem compressors (except size 25). Easy to use and safe,
these units precision control the water return temperature of the installation, carry out defrost cycles and
control the start-up of the compressors, as well as the pump and electric resistors. By reading the control
probes and safety elements, the controller protects the entire equipment against malfunctions. The
system allows connecting the unit to a standard RS-485 monitoring network.
For further information, please see Operating Instructions.
The YLCD/YLHD units are made of proven quality components and manufactured in compliance with
standards in force (ISO 9001 certification).
1User manual
1.1 General information
2

1.1.3 Models available and capacities
Cool-only
model YLCD 25 YLCD 40 YLCD 70 YLCD 100 YLCD 120 YLCD 150
Cooling
capacity(1) 24,6 39,8 69,5 98,4 118,5 144,5
Cooling
capacity(2) 24 40 70 99 119 145
(1) Net cooling capacities in kW for 7 °C of water inlet/outlet temperature and 35 °C of ambient temperature according
to the EUROVENT EN14511:2011 certification
(2) Gross cooling capacities in kW for 7 °C of water inlet/outlet temperature and 35 °C of ambient temperature ac‐
cording to the EUROVENT EN14511:2011 certification
Heat pump
model YLHD 25 YLHD 40 YLHD 70 YLHD 100 YLHD 120 YLHD 150
Cooling
capacity(1) 23,6 39,8 67,5 95,4 116,5 142,5
Heating
capacity(2) 23,4 43,2 72,5 104,6 120,1 159,5
Cooling
capacity(3) 23 40 68 96 117 143
Heating
capacity(4) 24 43 72 104 119,6 159
(1) Net cooling capacities in kW for 7 °C of water inlet/outlet temperature and 35 °C of ambient temperature according
to the EUROVENT EN14511:2011 certification
(2) Net heating capacities in kW for 45 °C of water inlet/outlet temperature and 7 °C of ambient temperature according
to the EUROVENT EN14511:2011 certification
(3) Gross cooling capacities in kW for 7 °C of water inlet/outlet temperature and 35 °C of ambient temperature ac‐
cording to the EUROVENT EN14511:2011 certification
(4) Gross heating capacities in kW for 45 °C of water inlet/outlet temperature and 7 °C of ambient temperature ac‐
cording to the EUROVENT EN14511:2011 certification
User manual 1
General information 1.1
3

1.1.4 Features and advantages
Features
• R-410A coolant
• Factory-tested equipment.
• Accessibility
• Main switch
• Microprocessor for control and alarms
• Manufactured to ISO 9001
• Hydro kit
• Connection for communications
Advantages
• Does not harm the ozone layer
• Minimum footprint
• Space for installation indoors or outdoors
• Operating quality control
• Easy maintenance
• Operator safety
• Easy and safe operation
• High quality level
• Low sound level and condensation control
• Ideal for building management
1.1.5 Technical specifications
These units are supplied completely factory-assembled and with all coolant tubing and wiring ready for
installation on site. After mounting, these units must go through an operational test with water. Coolant
leaks will also be checked during this process.
Sheeting cover
The units are made of galvanized steel sheeting and anticorrosion nuts and bolts. Panels can be removed
for access to internal components. The casing parts are painted with white RAL9001 oven-baked
polymerized enamel.
Compressors
One, two or four hermetic Scroll compressors are used, mounted in tandem on rails and antivibratory
supports. The compressors are connected for operation with one single cooling circuit. Start-up is carried
out by two independent starters. These compressors are equipped with mechanical elements that protect
them against high operating temperatures. The sump heaters operate only when the compressor is
inoperative.
Water-side exchanger
Comprises a stainless steel plate exchanger, adequately insulated by a layer of closed-cell elastomer
foam. Includes an antifreeze heater monitored by the controller. The coolant side of said exchanger
accepts an operating pressure of 45 bar, whereas the water side accepts 10 bar. When the unit includes
a hydro kit, maximum admissible pressure on the water side is 6 bar (adjustment of the tank safety valve).
Air-side exchanger
Made up of two notched aluminium blue fin coils and grooved copper tubing mechanically expanded
within the fin assembly.
Fans
The fans are connected to one plenum and have sufficient pressure available for accessories or to
connect them to ducts.
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1.1 General information
4

The standard air outlet is horizontal, although there is an option of modifying it to a vertical air outlet.
• The 100, 120 and 150 units are fitted with radial centrifugal fans with a directly coupled, electronically
controlled (EC) three-phase motor. Adjustment is automatic, high performance and is performed
through the cooling circuit pressure. The aim is to find the revs, the most appropriate and efficient
consumption of the fan. In this case, the air supply can be transformed from horizontal to vertical
(front or rear) by changing a plenum cover.
• The 25, 40 and 70 units are fitted with centrifugal fans with a motor with belt and pulley transmission.
– The 25 units are fitted with two fans with a shaft shared and a motor.
– The 40 and 70 units are fitted with two independent fans with a motor each.
– A high pressure switch has been added to the cooling circuit, which actuates on the operation of
one of the motors to carry out the LAK condensation control function.
Electrical and control panel
Located at the front of the unit, and with IP44 protection. The operating and control components are
factory mounted, wired and tested. The door of this control panel is equipped with a switch-disconnector
that cuts off the power supply. Inside we find the contactors for compressors and the pump, the
transformer, thermal magnetic protectors, controller electronic plates, connecting strip and the keyboard-
display with the unit controls.
Control keyboard-display
This device is accessible through an external leak-tight plastic cover. This is an easy-to-use control with
three access levels: direct, user (password) and factory (password). For further information, please see
Operating Instructions.
Cooling circuit
The cool only unit cooling circuit includes: expansion valve, filter-dryer, liquid sight glass, high and low-
pressure switches, service valves for isolating the condensing unit, and Schrader valves on the high and
low sides. The heat pump model also includes, in addition, a four-way valve (energized in summer cycle
and during defrosts), retaining valves, a heat cycle expansion valve and a liquid tank. The suction tubing
is coated with closed-cell elastomer.
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 resistor (except size 25), 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 includes a mesh filter for the water circuit. This filter is supplied loose
for installation at the most convenient point.
Flow switch
Assures sufficient water flow when the unit is in operation.
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 (except size
25).
Two pumps
Accessory available with models 100 to 150 with hydro kit. The second pump is started using the
controller program (Models 100, 120 and 150).
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General information 1.1
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Water filter
ATTENTION
The warranty of the unit will not be valid if a water filter has not been installed.
Supplied as a standard element on units including the hydro kit. Stainless steel mesh with 1 mm. diameter
perforations. Optional on units not including the hydro kit. The warranty of the unit will not be valid if a
water filter has not been installed.
Remote control
Wall-mounted remote control unit with keyboard for cool/heat and ON/OFF functions. Includes LEDs for
power supply, alarm and cool/heat. Maximum cable length: 50 m.
Remote terminal
For total access and control of the system by means of the display and buttons. It allows for selection of
cool, heat and off functions. Operating parameters can also be modified and the system can also be
supervised. Can be installed at a maximum distance of 1040 m.
BMS connections
With a serial board it is possible to connect the system to a standard RS–485 (MODBUS) monitoring
network.
Low sound level units (LN)
Include anti-noise covers mounted on the compressors and sound isolating plates, covering the
compressor chamber.
Gentle starter
For the soft motor start. Specially designed for Scroll compressors. (Maximum outdoor temperature: 50
°C).
Protecting grids
To protect the coils from possible impacts. Made of steel rods and painted with oven baked polymerized
white enamel (RAL9001).
LAK condensation pressure control
This option controls the summer cycle condensation pressure, via the air flow circulating around the
outdoor coils. This flow variation causes the condensation pressure to remain constant when outdoor
temperatures are low.
Available in models 25, 40 and 70.
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1.1 General information
6

Antivibration 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
accordance with the load to be supported.
The antivibratory support accessory for models
YLCD/YLHD 25, 40, 70 includes 4 units, whereas for
models YLCD/YLHD 100, 120 and 150 includes 6.
These spring supports should be distributed and
fastened in the drilled holes at the base of the cooler,
the location of which is detailed in the General
Dimensions section.
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.
CAUTION
The specialists responsible for installing the air conditioning unit must make sure they have all of the
information and knowledge required to correctly install, test and deliver the unit. Johnson Controls Inc.
shall not be considered responsible for any damage caused by installation of the unit that is no consistent
with that described in this document or others specifically provided with the unit.
During regular equipment installation, the fitter must pay special attention to certain situations in order
to prevent injuries or damage to the unit.
Situations that could jeopardise the safety of the fitter or that of others nearby or that could put the unit
itself at risk are clearly indicated in this manual.
A series of special symbols are used to clearly identify these situations.
Pay careful attention to these symbols and to the messages following them, as your safety and the safety
of others depends on it.
Ø 10
Ø 75
125
14,5
80
86
115
14,5
User manual 1
Safety instructions 1.2
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1.3 Icons used in this document
DANGER
•The text following this symbol contains information and instructions relating directly to your safety
and physical well-being.
•Not taking these instructions into account could lead to serious, very serious or even fatal injuries to
you and others in the proximities of the unit.
Information can also be found on safe procedures during unit handling. This will help reduce the risk of
accidents.
CAUTION
•The text following this symbol contains information and instructions relating directly to your safety
and physical well-being.
•Not taking these instructions into account could lead to minor injuries to you and others in the
proximities of the unit.
•Not taking these instructions into account could lead to unit damage.
Information can also be found on safe procedures during unit handling. This will help reduce the risk of
accidents.
NOTE
•The text following this symbol contains information or instructions that may be of use or that is worthy
of a more thorough explanation.
•Instructions regarding inspections to be made on unit parts or systems may also be included.
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.
Any abnormalities or damage to the unit should be communicated to both the transportation and
insurance company in writing.
Storage instructions
The unit should be stored in a place suitable to the purpose (warehouse or similar), protected from the
weather, water, humidity and dust.
Cover the unit with a canvas of a suitable size.
The unit should be appropriately protected from knocks and dust, ensuring the protective parts it was
supplied with remain in place. Where these are not in place, establish the necessary protections and/or
barriers to keep vehicles or fork-lift trucks away.
Transport, loading and unloading of the unit
The units should only be handled by personnel from the company responsible for their installation.
Transport of the unit should be in such a manner that no damage is caused by faulty or inadequate
mooring to the bed or body of the vehicle.
Where necessary, protect all of the edges of the unit against knocks and scratches and moor it to the
bed or body of the vehicle using suitable textile belts or slings to keep it perfectly still.
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1.3 Icons used in this document
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