Installation
Rigging unit to final location
Rig the unit to its final location on the floor or mounting pad, lift the unit or shell assembly using
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
Johnson Controls representative.
If the evaporator is to be field 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 Figure 5.
Locating and installing isolator pads
Locate the isolator pad mounts as shown in Figure 6, rubber side down.
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. The unit
should be level within 1/4 in. (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 are provided by the installer. Lower unit again and recheck to see
that it is level.
Checking the isolation pad deflection
All isolation pads should be checked for the proper deflection while checking to see if the unit
is level. Each pad should be deflected approximately 0.10 in. (2.5 mm) to 0.20 in. (5 mm). If an
isolation pad is under-deflected, place shims between the unit tube sheet and the top of the pad to
equally deflect all pads.
Leveling the unit
Check the longitudinal alignment of the unit by placing a level on the top center of the evaporator
shell under the compressor and motor assembly. Check the transverse alignment by placing a level
on top of the shell end sheets.
Installing optional spring isolators
When ordered, spring type isolator assemblies are supplied with the unit. The four assemblies are
identical and can be placed at any of the four corners of the unit.
While the unit is still suspended by the rigging, bolt the isolators to the unit by inserting the cap
screws through the holes in the mounting bracket into the tapped hole in the top of the isolator
leveling bolts. Then the unit can be lowered onto the floor.
Rotate the leveling bolts one turn at a time, in sequence, until the unit end sheets are clear of the
floor by the dimension shown in Figure 7 and Figure 8 and the unit is level. Check that the unit
is level, both longitudinally and transversely. See
. If the leveling bolts are not
long enough to level unit due to an uneven or sloping floor or foundation, steel shims, which are
grouted if necessary, must be added beneath the isolator assemblies as necessary.
After the unit is leveled, wedge and shim under each corner to solidly support the unit in this
position while piping connections are being made, pipe hangers adjusted and connections checked
for alignment. Fill the unit with water and check for leaks. Adjust the leveling bolts until the wedges
Model YK (Style G) Centrifugal Liquid Chiller
22
Summary of Contents for YORK YK Series
Page 2: ...2 Model YK Style G Centrifugal Liquid Chiller...
Page 14: ...Figure 3 Long term storage tube side Model YK Style G Centrifugal Liquid Chiller 14...
Page 19: ...Figure 6 Neoprene isolators in mm 19 Model YK Style G Centrifugal Liquid Chiller...
Page 20: ...Figure 7 Spring isolators in mm Model YK Style G Centrifugal Liquid Chiller 20...
Page 21: ...Figure 8 Spring isolators continued in mm 21 Model YK Style G Centrifugal Liquid Chiller...
