York YCSA 50 T Instructions D'installation page 12

Installation Instructions
Inspection
Upon reception, inspect the merchandise
and notify both the carrier and the insurance
company, in writing, of any possible
damage.
Environmental protection
Packing
Packing is made of recyclable
material. Its eliminate should be
carried out in accordance with
the existing local regulations on
selective collection of residual material.
Elimination of the unit
Upon disassembly of the unit, its
components should be recuperated
ecologically. The cooling circuit contains
refrigerant which should be recovered and
returned to the gas manufacturer for
recycling.
Oil will remain in the sealed compressor
and, therefore, it must be returned with its
circuit sealed.
The air conditioning unit will be deposited
in an area established by the local
authorities, for its selective recuperation.
Safety
Installation and maintenance operations of
this air conditioning system should be
carried out only by qualified and expert
personnel. Periodical
operations, such as cleaning the coils and
air filters, should be carried out so as to
keep unit performance at an optimum.
Caution
This unit should be installed
and used in accordance with:
- Low Voltage Electrotechnical
Regulations.
- Safety Regulations for Cooling Plants and
Installations.
- Regulations on Pressure Equipment.
- Basic Construction Standards.
- Local ordinances
Transportation
The units should always be transported in
a vertical position so as to avoid oil leaking
out of the compressor. If, for any reason,
this position need be changed sporadically,
they will remain in that position a strictly
necessary period of time.
Handling
This unit should be handled by using the
metal rails supplied for fastening and
transportation.
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Warning signs
The following signs indicate the presence
of possible dangerous conditions for the
users or maintenance personnel. When
found on the unit, their meaning should be
taken into account.
Fig. 1
This symbol indicates an electrical risk or
hazard.
Fig. 2
Caution: The unit is equipped with a remote
control system and can start automatically.
Before having access to the interior of the
unit, disconnect the power supply so as to
avoid any contact with the fan turbine in
motion.
Fig. 3
Caution: Fan in operation.
Fig. 4
Caution: It is obligatory to read the
instructions prior to any handling.
Fig. 5
Caution: Do not touch hot surfaces.
Fig. 6
Attention: Possible gas leaks due to
inadequate handling.
maintenance
Location
Before locating the unit in place, check the
specifications described on same to be sure
you have received the adequate product.
The unit should be placed on a perfectly
horizontal plane, making sure the base can
support the weight of the unit.
If you want to insure the absence of
vibration, the unit can be placed on a cork
or similar antivibratory base, or fastened to
its base with antivibratory plates or
supports.
Figure 11 indicates the clearances and
fastening points for each model.
Fastening the unit
Before installing the unit, make sure the
structure can withstand the weight of same.
If the unit is placed on the floor, a concrete
base should be prepared so as to distribute
its weight evenly. See Fig. 7.
Clearances
The installation of each unit should have
clearances for:
a) Air intake and discharge.
b) Maintenance servicing.
c) Power supply connection.
For correct operation, always respect the
minimum distances indicated in the general
dimensions diagrams with regard to
possible obstructions of free air circulation
or maintenance servicing.
Wiring
Electrical connections
The established national regulations
should be followed in all cases.
Each unit is supplied with a control box to
which the power supply will be connected
through a fused main switch or an automatic
switch.
Warning
Therefore, make sure all cables are
connected tightly.
Scroll compressors, rotational
direction
The Scroll compressors, just like the fans,
operate correctly in one single rotational
direction. When starting the equipment up,
make sure this rotational direction is correct.
If it is not correct:
- The compressor does not compress.
- It makes an unusual noise.
- Amp consumption is lower.
- It overheats.
Hydraulic connections
The hydraulic connections of the water
intake and outlet of the chiller should be
carried out respecting the intake and outlet
directions indicated.
Galvanised iron or copper tubing can be
use, with dimensions no lower than those
indicated, and keeping in mind the pressure
drops of said connections and of the
internal exchanger of the installation.
Pump dimensioning should be carried out
considering a nominal flow that allows an
∆t within the operating limits.
In all cases, a flow switch should be installed
so as to avoid the possibility of operation
without water circulation.
An expansion vessel should be installed in
the water return tubing.
This vessel must be adequate for the total
water volume of the installation.
During the winter season, with outdoor
temperatures below 0°C, precautions
should be taken to avoid the water from
freezing in the tubing networks and inside
the exchanger.
Usual application is to fill the circuit with an
antifreeze mixture (glycol).
GB
Loose cables can produce
overheating of the terminals or an
incorrect operation of the unit. A
fire hazard may also exist.