4
INSTALLATION
Locate the CRU
®
V humidifier near an electric power
source, water supply and a drain. Verify that sufficient
room is provided for a water seal in the drain piping. Refer
to Figure 4-3.
In an Air-Conditioning Unit
When installing a humidifier inside an air conditioning unit,
provide adequate support; allow easy access for removing
and servicing the evaporating chamber, and provide
adequate clearance to install the vapor hose and disper-
sion tube (see figure 4-1) and water seal. Refer to page 6
for mounting hole locations.
In a Duct
When installing the dispersion tube in a duct, allow for a
continuous pitch of the vapor hose back to the evaporating
chamber. Otherwise, use a water seal and drain (see
examples in figures 4-2 and 5-1). The dispersion tube can
also be placed vertically in the duct with some models
(see figure 5-2).
Place the control cabinet or electrical sub-panel in a
grounded protective metal enclosure and mount in a dry
and accessible location.
If draining the evaporating chamber by gravity is not
possible, use a small condensate lift pump, rated to pump
212° F/100°C water.
Examples of Installation in an Air Stream
Figure 4-1: Installation in an Air-Conditioning Unit
Duct
Horizontal mounting of dispersion tube in a duct, connected
via vapor hose to a wall-mounted CRU Series humidifier.
OM-2006
Figure 4-2: Horizontal Dispersion Tube
OM-2008
Vapor Hose
Figure 4-3: Piping for the CRUV
Note: provide 1"
(25 mm) air gap to
eliminate back
siphonage
Floor drain
Sanitary
sewer
Water seal must
not be above
bottom of frame
12" (305 mm)
OM-2003-1
