Unit Isolation And Leveling; Neoprene Isolator Installation; Drainage; Evaporator Grooved Pipe - Trane R Series Installation Operation & Maintenance

Unit Isolation and
Levelling
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" [6 mm] over the entire
length and width. Use shims as
necessary to level the unit.
Neoprene Isolator
Installation
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.
See unit submittals for isolator
placement, maximum weights, and
isolator diagrams.
Align the mounting holes in the
base of the unit with the threaded
positioning pins on the top of the
isolators.
Lower the unit onto the isolators
and secure the isolator to the unit
with a nut. The maximum isolator
deflection should be 1/4" [6 mm].
Level the unit carefully. Fully tighten
the isolator mounting bolts.
30
Installation - Mechanical

Drainage

Provide a large-capacity drain for
water vessel drain-down during
shutdown or repair. The evaporator
is provided with a drain connection.
All local and national codes apply.
The vent on the top of the
evaporator water box is provided to
prevent a vacuum, by allowing air
into the evaporator for complete
drainage.

Evaporator grooved pipe

Thoroughly flush all water piping to
the unit before making the final
piping connections to the unit.
CAUTION
If using an acidic commercial
flushing solution, construct a
temporary bypass around the unit
to prevent damage to internal
components of the evaporator.
To avoid possible equipment
damage, do not use untreated or
improperly treated system water.
CAUTION
Trane assumes no responsibility for
equipment failures which results
from untreated or improperly
treated water or saline or brackish
water.
CAUTION
The chilled-water connections to
the evaporator are to be "grooved
pipe" type connections. Do not
attempt to weld these connections,
because the heat generated from
welding can cause microscopic and
macroscopic fractures on the cast-
iron water boxes that can lead to
premature failure of the water box.
An optional grooved pipe stub and
coupling is available for welding on
flanges.
To prevent damage to chilled-water
components, do not allow
evaporator pressure (maximum
working pressure) to exceed
150 psig [10.5 bar].
Provide shutoff valves in lines to the
gauges, in order to isolate them
from the system when they are not
in use. Use rubber vibration
eliminators to prevent vibration
transmission through the water
lines. If desired, install
thermometers in the lines to
monitor entering- and leaving-water
temperatures. Install a balancing
valve in the leaving-water line to
control water flow balance. Install
shutoff valves on both the entering-
and leaving-water lines so that the
evaporator can be isolated for
service.
CAUTION
A pipe strainer must be installed in
the entering water line. Failure to do
so can allow waterborne debris to
enter the evaporator.
"Piping components" include all
devices and controls used to
provide proper water system
operation and unit operating safety.
These components and their general
locations are given on the next
page.
RLC-SVX02G-E4