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© American Standard Inc. 2003
Start Up / Operation
Start Up
Before starting the unit, complete the above
mentioned INSTALLATION CHECKLIST to
ensure the proper start-up preparation is
completed.
Operation
Two basic methods of fan coil control are
available: (1) fan speed control and (2)
cycling of the waterflow to the unit coil. The
operation of the fan speed control can be
implemented by using a simple motor speed
switch, and a thermostat unit can be used to
control the cycling of waterflow.
The wall-mounted thermostat unit usually
includes a motor speed switch, an on/off
switch and a thermostat. The on/off switch
turns the unit on and off, and the motor
speed switch controls the fan speed. The
thermostat controls the water line stop valve
and usually has a dial to select an
approxmate temperature.
Fan speed control is manually selected at
the appropriate position with the speed
selector switch labeled Off-Hi-Med-Low. The
fan will run contnuously at the selected
speed until the occupant manually changes
the speed setting. lt is also possible to cycle
the fan, at the speed selected, using a
thermostat.
14
Fan speed control can also be equipped (not
provided by this unit) with automatic speed
control in which the control will adjust the fan
speed according to the desired set
temperature.
Although the units may operate with variable
speed control, Trane cannot warranty proper
operation with any particular control. Contact
Trane if you have questions.
All HCCA fan-coil motors have internal
thermal cutout. The motors will be de-
energized if the internal temperature of a
motor exceeds 140˚C to protect the motors
against over-heating and burning out. The
auto-reset function will resume the motor
operation when the internal temperature of
the motor drops below 140˚C.
Coil Venting
When water is first introduced into a coil, air
is sometimes trapped in the coil tubing. This
trapped air has a tendency to collect at the
highest point in the coil. Therefore, a manual
air vent is installed at the highest point of the
header. When there appears to be air
trapped in the coil, resulting in "bubbling" or
"lanking" noises within the unit, release air
from the manual air vent by rotating the
knob. A pair of pliers can be used if the knob
is too tight to turn by hand. Turn knob
counter clockwise 1-2 turns and allow air to
flow out of the air vent until a steady stream
of water appears. Then retighten knob.
HCCA-SVX01A-EN
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