Trane R Series Installation Operation & Maintenance page 27

RTAC-SVX002A-EN
Installation Mechanical
Debris, trash, supplies etc. should not
be allowed to accumulate in the vicinity
of the unit. Supply air movement may
draw debris into the condenser coil,
blocking spaces between coil fins
and causing coil starvation. Special
consideration should be given to low
ambient units. Condenser coils and fan
discharge must be kept free of snow or
other obstructions to permit adequate
airflow for satisfactory unit operation.
In situations where equipment must
be installed with less clearance than
recommended, such as
occurs in retrofit and
applications, restricted
common. The Main Processor will
direct the unit to make as much chilled
water as possible given the actual
installed conditions. Consult your Trane
sales engineer for more details.
NOTE: If the outdoor unit configuration
requires a variance to the clearance
dimensions, contact
Sales Office Representative.
refer to Trane Engineering Bulletins
for application information on RTAC
chillers.
Unit Isolation and Leveling
For additional reduction of sound and
vibration, install the optional neoprene
isolators.
Construct an isolated concrete pad for
the unit or provide concrete footings
at the unit mounting points. Mount the
unit directly to the concrete pads or
footings.
Level the unit using the base rail as a
reference. The unit must be level within
1/4-in (6 mm) over the entire length and
width. Use shims as
Neoprene Isolator Installation
1. Secure the isolators to the mounting
surface using the mounting slots in the
isolator base plate. Do not fully tighten
the isolator mounting bolts at this time.
2. Align the mounting holes in the base
of the unit with the threaded positioning
pins on the top of the isolators.
3. Lower the unit onto the isolators and
secure the isolator to the unit with a nut.
Maximum isolator deflection should be
1/4 inch (6 mm).
4. Level the unit carefully. Fully tighten
the isolator mounting bolts.
Drainage
Provide a large capacity drain for water
vessel drain-down during shutdown or
frequently
repair. The evaporator is provided with
rooftop
a drain connection. All local and national
air-flow is
codes apply. The vent on the top of
the evaporator waterbox is provided to
prevent a vacuum by allowing air into
the evaporator for complete drainage.
Evaporator Water Piping
Thoroughly flush all water piping to
the unit before making the final piping
your Trane
connections to the unit.
Also
Evaporator Piping
Components
slightly, depending on the location of
connections and the water source.
CAUTION
Evaporator Damage!
The chilled water connections to
the evaporator are to be "victaulic"
type connections. Do not attempt
to weld these connections, as the
heat generated from welding can
cause microscopic and macroscopic
fractures on the cast iron waterboxes
that can lead to premature failure of
the waterbox. To prevent damage
to chilled water components, do not
allow evaporator pressure (maximum
working pressure) to exceed 150 psig
(10.5 bar).
and layout will vary
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