York YS Service Manual download pdf (Page 25)

4 INSTALLATION

4.1 Location

YS units are furnished with vibration isolator mounts for

basement or ground level installations. Units may be

located on upper floor levels providing the floor is

capable of supporting the total unit operating weight and

optional spring isolators are used.

Sufficient 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 cooler and

condenser tubes. (See CLEARANCES).

A doorway or other sufficiently large opening properly

located may be used. The chiller should be located in an

indoor location where temperatures range from 4°Cto

43°C.

4.2 Motors

The YS 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.

4.4 Clearances

Clearances should be adhered to as follows:

Rear and above unit – 600 mm.

Front of unit – 900 mm.

Tube Removal – see table below

4.5 Rigging Unit to Final Location

Rig the unit to its final location on the floor 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.)

At this point units shipped dismantled should

be assembled under the supervision of a York

representative.

If cooler is to be field insulated, the insulation should be

applied to the cooler 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 4.1

After the isolator pads have been placed into position on

the floor, 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 specified, 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 Isolator Pad Deflection

All isolator pads should be checked for the proper

deflection while checking to see if the unit is level. Each

pad should be deflected approximately 4 mm. If an

isolation pad is under-deflected, shims should be placed

between the unit tube sheet and the top of the pad to

equally deflect all pads.

Levelling the Unit

The longitudinal alignment of the unit should be checked

by placing a level on the top centre of the cooler 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.

035L02381-GB0 4-1

COMPRESSOR TUBE REMOVAL SPACE (mm)

S2, S3 3073

S4, S5 3683

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 67 68

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York YS Service Manual Page 25

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