Trane CVHE Installation, Operation And Maintenance Manual page 19

Figure 6. Isolation spring placement by shell size,
evaporator and condenser length
left
rear
Condenser
Evaporator
left
front
left
Condenser
rear
left
center
Evaporator
left
front
Spring isolators typically ship assembled and ready for
installation. To install and adjust the isolators properly,
follow the instructions given.
Note: Do not adjust the isolators until the chiller is piped
and charged with refrigerant and water.
1. Position the spring isolators under the chiller as shown
in Figure 6. Ensure that each isolator is centered in
relation to the tube sheet.
Note: 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.
Important: 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.
Note: 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.
Important: 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
Chiller Lift, " p. 16. The weight of the chiller will force
CVHE-SVX02H-EN
right
rear
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
right
front
right
rear
142 E/L
250 E/L
right
front
"Standard
down the upper housing of each isolator, and could
cause it to rest on the isolator's lower housing (refer to
Figure 7).
.
Figure 7. Chiller foot and isolator orientation
Side View of Unit
Center tube
sheet
support leg
Center of
isolator
spring
Note: The spring isolator must be centered
in relation to the tube sheet. Do not
align the isolator with the flat part of
the chiller foot since the tube sheet is
often off center
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 bolt one complete
revolution upward.
Note: When the load is applied to the isolators
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 (Step
7. Turn the adjusting bolt 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 bolt on each of the isolators on the low side
of the unit. Work from one isolator to the next.
Important: 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).
Installation: Mechanical
End View of Unit
Outside edge
of tube sheet
Note: The length of the
isolator should
be parallel to the
leg.
(Step
7) will raise the chiller.
5),
19