Accessories 4 - York YLCC-H Technical Information

Electric and control panel
The electric and control components are factory-installed,
connected and tested. The electric box has a door with a
blocking mechanism and contains the compressor and fan
contactors, phase control relay, and automatic switches. Also
equipped with IP44 protection.
Phase control relay
The unit circuit board introduces a sequence and phase
failure detector. If it detects a phase sequence other than
R-S-T, or once the unit is turned on one of the phases fails,
the detector, by means of an internal volt-free contact, will
disconnect power supply to the main board of the unit. The
unit is then inoperative.
Centrifugal fans
Transmission is by belts and removable core pulleys. The
motors are mounted on tensing bases fastened directly to
the fan casing.
Two versions are available: with horizontal or vertical air
discharge.
Controls
To achieve maximum energy savings, perfect operation of
the equipment and prolong the useful life of same, the YLCC
water chillers or heat pump units are equipped with the fol-
lowing controls:
- Electronic thermostat that controls cold water return tem-
perature.
- Electronic antifreeze thermostat.
- High pressure switch, 3 bar.
- Low pressure switch, 2 bar.
- High pressure switch, 24 bar (YLCC-H).
- Low pressure switch, 0.5 bar (YLCC-H).
- Discharge temperature protection.
- Stage rotation (included in the thermostat).
- Remote control unit (optional).
- Timed start.
- Remote control.
Accessories
Hydro kit GH
Includes: Buffer tank, automatic air purger, pressure gauge,
automatic .5-bar filling valve, expansion vessel, pump,
flow switch, drain valve, safety valve and electric board for
interconnection. Available in 40, 200, 260 and 600 litre
capacities.
There are two versions of GH600: GH600S and GH600P.
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Compatible with the following units:
GH40 for size 42
GH200 for size 42
GH260 for sizes 62 and 82
GH600S for sizes 02 and 22
GH600P for size 52
DI buffer tanks
Cylindrical shape and vertical position. Available in 200, 260
and 600 litre capacities.
Low ambient kit (factory-mounted, optional)
This accessory allows operation of the unit when the con-
densing outdoor air temperature is below 0° C.
General information
This accessory controls condensing pressure in the summer
cycle by varying air flow through the outdoor coils. This flow
variation keeps condensing pressure constant when outdoor
temperatures are low.
Operation
By means of the pressure detected by the analogical pres-
sure switches installed in the cooling circuit, and carrying
out the appropriate calculations as programmed, this control
generates an analogical signal that opens the dampers to
maintain the condensing pressure previously programmed
as the set point.