Water System - Trane CGAM Installation & Operation Manual

Pre-Start Checkout
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.

Water System

Flow Rates
NOTICE:
Equipment Damage!
Establish a balanced chilled water flow through the
evaporator. The flow rates should fall between the
minimum and maximum values. Flow rates outside the
recommended range could cause evaporator failure.
Establish a balanced chilled water flow through the
evaporator.The flow rates should fall between the
minimum and maximum values. Chilled water flow rates
below the minimum values will result in laminar flow,
which reduces heat transfer and causes either loss of EXV
control or repeated nuisance, low temperature cutouts.
Flow rates that are too high can cause tube erosion.
Pressure Drop
Measure water pressure drop through the evaporator at
the field-installed pressure taps on the system water
piping. Use the same gauge for each measurement.
Measure flow at the field-installed supply and return.This
will include valves, strainers, and fittings in the pressure
drop readings.
Pressure drop readings should be approximately those
shown in the Pressure Drop Charts in the Installation-
Mechanical section.
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