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Condensate Removal
ICR System
The Internal Condensate Removal system
consists of a small pump that is driven by the
main board. The board supplies line voltage to
the pump. *Defrost water that is collected in the
rear base pan is pumped up into a trough that
rests along the length of the indoor coil. Water
from the trough drips down the indoor coil to
add moisture to the indoor air and to reduce the
amount of water in the base pan.
*ONLY during Heat Pump Mode.
The water that is collected through the normal
process of air conditioning is collected in the rear
base pan. To aid in dissipating this water, the
outdoor fan blade has a ring around the blade
that picks up the water and “slings” it onto the
outer coil. This assists in removing heat from the
coil when the Zoneline is in cooling mode.
When operating in the heat-pump mode, defrost
water is also collected in base pan, but because
outdoor temperatures may drop below freezing,
the water level could cause the outdoor fan
blade to freeze in the pan. To prevent this from
occurring, a thermostatically operated drain pan
plug is utilized. Located in the base pan, when
the air temperature is above 65°F it is closed, and
opens when the temperature drops below 45°F,
lowering the water level in the base pan.
If water that is collected off the indoor coil is not
draining back to the base pan, clean the drain
trough exit located on the left side of the trough.
Slinger on Outdoor Fan Blade
ICR Pump
On some Zoneline models, an Internal
Condensate Pump is mounted into the outer
base pan. As with previous ICR models, this
pump is designed to pump condensate water,
which accumulates from the outdoor coil when in
heat pump mode, up to the top of the indoor coil
and allows the water to trickle down the coil to
evaporate. This process cuts down on excessive
water flowing out of the rear of the Zoneline and
adds moisture to the indoor air.
