Locating And Installing Isolator Pads; Checking The Isolator Pad Deflection; Figure 3 - Standard Neoprene Vibration Isolator Pad Mounts (English) - York YR TB TB T0 Installation Operation & Maintenance

SECTION 1 – INSTALLATION

LOCATING AND INSTALLING ISOLATOR PADS

The isolator pads should be located in accordance with
the floor layout of the dimensional product drawing,
Form 160.81-PA1. After the isolator pads have been
placed into position on the floor, lower the unit onto the
pads. Make sure the pads are even with the edges of the
mounting feet. When the unit is in place, remove the
rigging equipment and check that the chiller is level,
both longitudinally and transversely. See Figure 3 on
page 16.
The longitudinal alignment of the unit should be checked
by placing a level on the top center of the evaporator
shell under the compressor/motor assembly. Trans-
verse alignment should be checked by placing a level on
top of the shell end sheets at each end of the unit.
7/8" DIA.
HOLE
3"
3"
1"
8"
5-1/2"
4-1/2"
3/8" STEEL PLATE
UNIT WEIGHT UP TO 16,365 LBS.

FIGURE 3 - STANDARD NEOPRENE VIBRATION ISOLATOR PAD MOUNTS (ENGLISH)

16
FLOOR LAYOUT
C L EVAPORATOR
END SHEET
C L
CONDENSER
SUPPORT FOOT
6"
DIMENSIONS ARE
TYPICAL ALL 4 CORNERS
ISOLATOR TO BE CENTERED
UNDER SUPPORT FOOT
1/2"
4-1/2"
5-1/2"
1" DEFLECTED
HEIGHT
The unit should be level within 1/4 inch (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
tube sheets.

CHECKING THE ISOLATOR PAD DEFLECTION

All isolator pads should be checked for the proper de-
flection while checking the level of the unit. Each pad
should be deflected approximately 0.15 inch (4 mm).
If an isolator pad is under deflected, shims should be
placed between the unit tube sheet and the top of the
pad to equally deflect all pads. Refer to Figure 3 on
page 16.
C L
SHELLS
END SHEET
DIMENSION "A"
From Figure 2 (pages 12 and 13)
UNIT WEIGHT 16,366 TO 28,835 LBS.
FORM 160.81-NOM1
ISSUE DATE: 10/3/2020
DIMENSION "C"
From Figure 2
(pages 12 and 13)
7"
6" 1/2"
4-1/2"
5-1/2"
1/2"
3/8" STEEL PLATE
1" DEFLECTED
HEIGHT
JOHNSON CONTROLS
LD07959