035-19569-101 (0109)
4-1
GB
4 INSTALLATION
4.1 Location
YK units are furnished with vibration isolator mounts
for basement or ground level installations. Units may
be located on upper fl oor levels providing the fl oor is
capable of supporting the total unit operating weight and
optional spring isolators are used.
Suffi cient clearance to facilitate normal service and
maintenance work must be provided all around and
above the unit and particularly space provided at either
end to permit cleaning or replacement of evaporator and
condenser tubes – see Clearances.
A doorway or other suffi ciently large opening properly
located may be used. The chiller should be located in
an indoor location where temperatures range from 4.4°C
to 43.3°C.
WARNING
The unit should not be installed directly
on flammable materials, such as wooden
structures or roof’s.
4.2 Motors
The YK open motor is air cooled. Check national, local
and other codes for ventilation requirements.
4.3 Foundation
A level floor, mounting pad or foundation must be
provided by others, capable of supporting the operating
weight of the unit.
NOTE
To be in conformity with the EN 60204 standard,
it can be necessary to add a service platform
so that the height of the control handles (i.e.
circuit breaker handle) lies between 0,6 m and
1,9 m.
4.4 Clearances
Clearances should be adhered to as follows:
Rear and above unit – 610 mm.
Front of unit – 910 mm.
Tube Removal– 4300 mm except those shell codes
detailed below:
Evaporator
Code
Condenser
Code
Tube Removal (mm)
(either end)
Q, N, R, X, Q, N, R, T, X, 4900
S, Z S, V, Z 5500
W W 6700
Evaporator
Code
Condenser
Code
Tube Removal (mm)
(either end)
Q, N, R, X, Q, N, R, T, X, 4900
S, Z S, V, Z 5500
W W 6700
4.5 Rigging Unit to Final Location
Rig the unit to its fi nal location on the fl oor or mounting
pad, lift the unit (or shell assembly) by means of an
overhead lift and lower the unit to its mounting position.
(If optional shipping skids are used, remove them before
lowering the chiller to its mounting position.)
NOTE
At this point units shipped dismantled should
be assembled under the supervision of a York
representative.
If evaporator is to be fi eld insulated, the insulation should
be applied to the evaporator before the unit is placed in
position while the unit is in the lift position. Be sure unit
is properly supported. (See INSULATION).
4.6 Locating and Installing Isolator Pads
The isolator pad mounts are to be located as shown in
Figure .1
After the isolator pads have been placed into position
on the fl oor, lower the chiller onto the pads. When the
unit is in place, remove the rigging equipment and check
that the unit is level both longitudinally and transversely.
The unit should be level within 6 mm from one end to the
other end and from front to the rear. If the chiller is not
level within the amount specifi ed, lift it and place shims
between the isolation pad and the chiller tube sheets.
(Shims furnished by the installer.) Lower unit again and
recheck to see that it is level.
Checking the Isolation Pad Defl ection
All isolation pads should be checked for the proper
defl ection while checking to see if the unit is level. Each
pad should be defl ected approximately 4 mm. If an
isolation pad is under-defl ected, shims should be placed
between the unit tube sheet and the top of the pad to
equally defl ect all pads.
Levelling the Unit
The longitudinal alignment of the unit should be checked
by placing a level on the top centre of the evaporator
shell under the compressor/motor assembly. Transverse
alignment should be checked by placing a level on top
of the shell end sheets at each end of the chiller.
To Next Page
Loading...
