Trane CVHE Installation, Operation And Maintenance Manual page 25

Figure 7. Isolation spring placement by shell size, and
evaporator and condenser length
Spring isolators typically ship assembled and ready for
installation. To install and adjust the isolators properly,
follow the provided instructions.
N N o o t t e e : : Do NOT adjust the isolators until the chiller is
piped and charged with refrigerant and water.
I I m m p p o o r r t t a a n n t t : : 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 N o o t t e 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.
I I m m p p o o r r t t a a n n t t : : Support the full underside of the
isolator base plate; do NOT straddle
gaps or small shims.
3. If required, bolt the isolators to the floor through
the slots provided, or cement the pads.
N N o o t t e e : : Fastening the isolators to the floor is not
necessary unless specified.
4. If the chiller must be fastened to the isolators, insert
capscrews through the chiller base and into holes
drilled and tapped in the upper housing of each
isolator.
I I m m p p o o r r t t a a n n t t : : Do NOT allow the screws to protrude
below the underside of the isolator
upper housing, or interfere with the
adjusting bolts. 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
CVHE-SVX02M-EN
6. Check the clearance on each isolator. If this
7. Turn the adjusting bolt on each of the remaining
8. Once the minimum required clearance is obtained
"Standard
I I n n s s t t a a l l l l a a t t i i o o n n : : M M e e c c h h a a n n i i c c a a l l
Chiller Lift," p. 22. 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).
dimension is less than 1/4 in. (6.35 mm) on any
isolator, use a wrench to turn the adjusting bolt one
complete revolution upward.
N N o o t t e e : : When the load is applied to the isolators
(refer to Step 5), 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 bolt (refer to
Step 7) will raise the chiller.
isolators to obtain the required minimum clearance
of 1/4 in. (6.35 mm).
on each of the isolators, level the chiller by turning
the adjusting bolt on each of the isolators on the
low side of the unit. Work from one isolator to the
next.
I I m m p p o o r r t t a a n n t t : : 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).
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