DECTRON
Dectron, Inc. March 2012
DSH/DSV/RSH/DBH/RBH Series Dehumidifier Owner’s Manual
Installation Wiring Power
Data subject to change without notice.
144
Where DRY-O-TRON
®
units are mounted outdoors, it is best NOT to mount electrical disconnect switches or
circuit breakers on the DRY-O-TRON
®
cabinet, because the resulting holes allow rainwater to be drawn into the
insulated walls by the pressures inside the unit.
Where such mounting must be done, use care to seal all penetrations to stop the movement of air and water
vapor. Caulk around the top and sides of such devices to keep rainwater water from getting behind them.
All conduits entering outdoor units should be sealed.
Units with housed blowers, as shown at right, may have
strong negative air pressures inside the unit cabinet, including
inside the electrical enclosure. Rainwater may be drawn into
a disconnect box that is exposed to this negative pressure.
In some situations, fumes from chemical storage or
combustion products from boilers, etc., may be drawn into the
DRY-O-TRON
®
unit from remote locations via the conduit
system. This MUST be prevented.
Units with economizers have the letter ”B” in their model
designations, e.g. “RB120”. Depending on air balancing,
economizer units with housed supply-air blowers may have a
positive air pressure in the supply-blower compartment. A
conduit seal is required
to prevent condensation throughout
the conduit system.
Units with plenum-type supply-air blowers will have a strong
positive air pressure inside the blower compartment. There
may also be a strong positive pressure inside the electrical
enclosure. A conduit seal is required to prevent condensation
throughout the conduit system.
blower
compartment
blower
compartment
Sample
Actual appearance
may vary.
INSTALLATION
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