28
CVHE-SVX005B-EN
Figure 7. Isolation spring placement by shell size, and
evaporator and condenser length
Condenser
Evaporator
Condenser
Evaporator
left
rear
left
front
right
rear
right
front
left
rear
right
rear
left
center
right
front
left
front
032 S/S, S/L, L/L
050 S/S, S/L, L/L
080 S/S, S/L, L/L
142 M/L, L/L
210 L/L
142 E/L
250 E/L
Spring isolators typically ship assembled and ready for
installation. To install and adjust the isolators properly,
follow the provided instructions.
N
No
otte
e:: Do NOT adjust the isolators until the chiller is
piped and charged with refrigerant and water.
IIm
mp
po
orrtta
an
ntt:: Do NOT block any serviceable components
such as the lubrication system with field-
installed devices such as spring isolators.
1. Position the spring isolators under the chiller as
shown in the preceding figure. Ensure that each
isolator is centered in relation to the tube sheet.
N
No
otte
e:: Spring isolators shipped with the chiller may
not be identical. Compare the data provided
in the unit submittal package to determine
proper isolator placement.
2. Set the isolators on the sub-base; shim as
necessary to provide a flat, level surface at the
same elevation for the end supports.
IIm
mp
po
orrtta
an
ntt:: Support the full underside of the
isolator base plate; do NOT straddle
gaps or small shims.
3. If required, screw the isolators to the floor through
the slots provided, or cement the pads.
N
No
otte
e:: Fastening the isolators to the floor is not
necessary unless specified.
4. If the chiller must be fastened to the isolators, insert
cap screws through the chiller base and into holes
drilled and tapped in the upper housing of each
isolator.
IIm
mp
po
orrtta
an
ntt:: Do NOT allow the screws to protrude
below the underside of the isolator
upper housing, or interfere with the
adjusting screws. An alternative
method of fastening the chiller to the
isolators is to cement the neoprene
pads.
5. Set the chiller on the isolators; refer to
. The weight of the chiller will
force down the upper housing of each isolator, and
could cause it to rest on the isolator’s lower
housing (refer to the following figure).
6. Check the clearance on each isolator. If this
dimension is less than 1/4 in. (6.35 mm) on any
isolator, use a wrench to turn the adjusting screw
one complete revolution upward.
N
No
otte
e:: When the load is applied to the isolators
(refer to
), the top plate of each isolator
moves down to compress the springs until
either the springs support the load or the top
plate rests on the bottom housing of the
isolator. If the springs are supporting the load,
screwing down on the adjusting screw (refer
to
) will raise the chiller.
7. Turn the adjusting screw on each of the remaining
isolators to obtain the required minimum clearance
of 1/4 in. (6.35 mm).
8. Once the minimum required clearance is obtained
on each of the isolators, level the chiller by turning
the adjusting screw on each of the isolators on the
low side of the unit. Work from one isolator to the
next.
IIm
mp
po
orrtta
an
ntt:: The chiller must be level to within 1/
16 in. (1.6 mm) over its length and
width, and the clearance of each
isolator must be at least 1/4 in.
(6.35 mm).
