Manual# I27028 4-4 Rev. 2 – 11/22/2017
Figure 4-3
INSTALLATION INSIDE COOL SPACE
4. By planning and installing the ductwork carefully, problems with condensation can
be avoided inside the ducts. Always place any horizontal runs of ductwork so they
slope away from the unit. Allow a slope of 1/8" per 12" of run. Before any vertical
run, create a trap which can be drained.
Never allow condensation from the ducts to run back
into the HoneyCombe
®
wheel. This will prevent the
unit from operating as it should.
5. If the unit is installed in a cold space, air from the reactivation air stream must not be
allowed to flow into the R-Series unit when the unit is turned off. This moist air
would condense inside the unit. To prevent this, install isolation dampers at two
points in the reactivation air stream – one damper in the intake and the other in the
exhaust. The dampers should be installed outside of the conditioned space.
6. It is very important not to allow any leaks on the output side of the process air
stream. Leaks can allow the moisture from the process space to move into the
process airstream, even though the moisture must move “upstream” against the air
flow.
Process air OUT –
to process space
Process air IN –
from process space
Reactivation air IN –
from outdoors
Reactivation air OUT –
to outdoors
Duct riser with trap
at bottom
OUTDOORS
COOL SPACE
ISOLATION
DAMPER
Output pipe has slope of
1/8” per 12” of run
ISOLATION
DAMPER
3’ min.
3’ min.
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