Unit Shipment; Storage; Recommended Unit Clearances - Trane CenTraVac Installation - General Information

Unit Shipment

Each chiller ships from the factory as
a hermetically-assembled package; it
is factory-piped, wired and tested. All
openings are covered or plugged to
prevent contamination during
shipment and handling.
See Figure 1 for an illustration of a
typical chiller and its components.
When the unit arrives at the job site,
inspect it thoroughly for damage and
material shortages. Suggested
inspection steps below:
1. To prevent damaging moisture
from entering the unit and causing
corrosion, each chiller is
pressurized with dry nitrogen
before shipment.
2. Verify that the chiller is dehydrated
by checking the evaporator press
for an indication of holding charge
pressure. Temporarily attach
service gauge to refrigerant
charging valves.
Note: The holding charge should
register approximately 5 psig
[34.5 kPa) on the gauge at 72°F
[22.2°C]. If the charge has escaped,
contact your local Trane sales
office for instructions.
3. The loose parts box and isolator
pads ship in the motor terminal
box or unit mounted starter
enclosure if so equipped. Remove
the sheet metal shipping bracket
from the motor terminal box and
discard.
4. Check the oil sump sight glasses
to verify that the sump was
factory-charged with 9 gallons
[34 l] of oil on units with a
Refrigerant Pump.
8
General Information
Beginning with design sequence
2K for the CVHE, L0 for the CVHG
and U0 for the CVHF a new
redesigned lubrication system has
been incorporated. Aluminum
balls, which are incorporated into
the sight glass, float when oil is
present, showing a better visible
display of the oil level indication.
5. If no oil level indication is visible,
contact your local Trane sales
office.
6. Compare the unit nameplate data
(including electrical characteristics)
with the corresponding ordering
and shipping information to verify
that the correct unit was shipped
to the job site.
7. If a thorough inspection of the
chiller reveals damage or material
shortages, be sure to file these
claims with the carrier
immediately. Specify the extent
and type of damage found, and
notify the appropriate Trane sales
representative. Do not install a
damaged unit without the sales
representative's approval.

Storage

If the chiller will be stored at the job
site for an extended period of time
before it is installed, exercise these
precautionary measures to protect
the unit from damage.
1. Do not remove the protective
coverings factory-installed on the
control panel and compressor
inlet vane actuator for shipment.
2. Store the chiller in a dry, vibration
free and secure area. If factory
insulated, protect chiller from
prolonged exposure to sunlight.
CAUTION
Insulation Damage!
TO PREVENT DAMAGE TO THE
FACTORY-INSTALLED INSULATION,
do not allow excessive exposure to
sunlight.
3. Periodically check evaporator
pressure to verify that 3 to 5 psig
[21 to 34.5kPa] dry nitrogen @
72°F [22.2°C] ambient holding
charge is still in the chiller. If this
charge escapes, contact a qualified
service organization and the Trane
sales engineer that handled the
order.
Note: The storage for the
microcomputer-based devices in the
unit control panel is -40°F [-40°C] to
158°F [70°C].
Recommended Unit
Clearances
Adequate clearances around and
above the chiller is required to allow
sufficient access for service and
maintenance operations.
Figures 2, 3, 4, 5 and 6 illustrate the
recommended clearances for units
with and without options.
Note: In each instance, the minimum
vertical clearance above the chiller is
3 feet.
In addition, be sure to provide
working space clearance in front of
the unit control panel to satisfy
national and local electric codes.
Important: Do NOT install piping or
conduit above the compressor
motor assembly or behind the
suction elbow.
(Specific unit clearance requirements
are also indicated in the submittal
package provided for your unit.)
CVHE-SVN01C-EN