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Cleaning
Apply power to TrueDRY DR90/DR120. Turn the humidity control to a low RH% level to initiate a dehumidifica-
tion call. Confirm that the TrueDRY DR90/DR120 compressor and fan turn on. The furnace blower will also turn
on to circulate air. This will take up to two minutes. Be sure to turn the control to the desired RH% or to Off when
checkout is complete.
Checkout
TrueDryDR90/DR120DehumidicationSystem69-2690EFS—04 11
On an annual basis, maintenance is required to ensure TrueDRY runs at peak efficiency.
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Unplug TrueDRY
DR90/DR120
before beginning
service. Remove
the magnetic filter
door.
Cut and remove plastic strap
holding compressor in place.
This strap is only used for
shipping.
Remove filter
(50049536-003)
and replace
with new filter.
Apply power to TrueDRY
DR90/DR120. Turn humidity
control to a low RH% to initi-
ate a dehumidification call.
Confirm that the compressor
and fan turn on. The furnace
blower will also turn on to cir-
culate air. Be sure to turn the
control to the desired RH% or
to Off when the checkout is
complete.
Remove cover on output side of dehumidi-
fier. Using a damp cloth, remove excess
dust and debris from blower and internal
cabinet. Reattach cover when finished.
If using for ventilation, initiate a
call for ventilation. Confirm that
the DR90/DR120 fan turned
on, but that the compressor
remained off.
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When service is complete, initiate a call for dehumidification and check that the compressor
and fan activate. If using the VisionPRO IAQ or TrueIAQ controls, reset maintenance
reminders.
Check the drain connection and drain
line to ensure it is clear of debris and
sludge. Ensure all hose connections are
secure once maintenance of the drain
lines is complete.