Trane RTWD Installation Operation & Maintenance page 22

Unit Description
Unit Storage
If the chiller is to be stored for more than one month
prior to installation, observe the following precautions:
• Do not remove the protective coverings from the
electrical panel.
• Store the chiller in a dry, vibration-free, secure area.
• At least every three months, attach a gauge and
manually check the pressure in the refrigerant circuit.
If the refrigerant pressure is below the values in
table 9 below, call a qualifi ed service organization
and the appropriate Trane sales offi ce.
Table 9
Temperature Pressure mini for
bar gage
20°C
10°C
NOTE: Pressure will be approximately 1.0 bar if shipped
with the optional nitrogen charge.
• This chiller could have been performance tested
before shipment. The water boxes drain plugs were
withdrawn to avoid the stagnation of the water and
possible freeze up under the tubes bundle. Rust colors
can be present and are totally normal but they must be
wiped off at the time of reception.
Sound Considerations
Refer to Engineering Bulletin for sound consideration
applications.
Locate the unit away from sound-sensitive areas.
Install the isolation pads under the unit. Refer to "Unit
Isolation."
Install rubber vibration isolators in all water piping.
Use fl exible electrical conduit for fi nal connection to the
Tracer UC800.
Seal all wall penetrations.
NOTE: Consult an acoustical engineer for critical
applications.
Foundation
Provide rigid, non-warping mounting pads or a concrete
foundation of suffi cient strength and mass to support
the chiller operating weight (including completed piping
and full operating charges of refrigerant, oil and water).
Refer to General information for unit operating weights.
Once in place, level the chiller within 6 mm over its
length and width.
The manufacturer is not responsible for equipment
problems resulting from an improperly designed or
constructed foundation.
Vibration Eliminators
Provide rubber boot type isolators for all water piping at
the unit.
Provide fl exible conduit for electrical connections to the
unit.
22
Pressure mini for
R134a R1234ze
bar gage
4.7 3.3
3.1 2.1
Isolate all pipe hangers and be sure they are not
supported by main structure beams that could introduce
vibration into occupied spaces.
Make sure that the piping does not put additional stress
on the unit.
NOTE: Do not use metal braided type eliminators on the
water piping. Metal braided eliminators are not effective
at the frequencies at which the unit will operate.
Clearances
Provide enough space around the unit to allow the
installation and maintenance personnel unrestricted
access to all service points. A minimum of 1 m is
recommended for compressor service and to provide
suffi cient clearance for the opening of control panel
doors. Refer to submittals (documents supplied in
document package coming with unit) for minimum
clearances required for condenser or evaporator tube
service. In all cases, local codes will take precedence
over these recommendations. If the room confi guration
requires a variance to the clearance dimensions, contact
your sales representative.
NOTE: Required vertical clearance above the unit is at
least 1 m. There should be no piping or conduit located
over the compressor motor.
NOTE: Maximum clearances are given. Depending
on the unit confi guration, some units may require
less clearance than others in the same category. Heat
exchanger tube removal clearance is necessary for
detubing and retubing.
Ventilation
The unit produces heat even though the compressor is
cooled by the refrigerant. Make provisions to remove
heat generated by unit operation from the equipment
room. Ventilation must be adequate to maintain
an ambient temperature lower than 40°C. Vent the
pressure relief valves in accordance with all local and
national codes. Refer to "Pressure Relief Valves".
Make provisions in the equipment room to keep the
chiller from being exposed to ambient temperatures
below 10°C.
Water Drainage
Locate the unit near a large capacity drain for water
vessel drain-down during shutdown or repair.
Condensers and evaporators are provided with drain
connections. Refer to "Water Piping." All local and
national codes apply.
Unit dimensions and weights
Refer to the unit submittals for specifi c dimensional
information (documents supplied in document package
coming with unit).
RLC-SVX14H-GB