Specifications

4
INSTALLATION
Figure 4-2: Mounted Horizontally in Duct and Lower
Than VAPORMIST Unit
Locating and Mounting the VAPORMIST
®
Humidifier
The VAPORMIST humidifier is designed to hang on a
wall, and should be installed in a mechanical room or in
a space located near an air duct system.
Consider the following when selecting the location of the
humidifier:
• Visible location (preferred)
• Convenient access to duct
• Electrical and plumbing connections
• Required clearances
The mounting location should provide a minimum
clearance of 36" to the front and 24" to the right side of
the unit. This clearance is required for removing the
evaporating chamber and accessing electrical compart-
ment.
Examples of Mounting the Dispersion Tube
Figure 4-1: Mounted Horizontally in Duct
1½” Vapor
Hose
Vapor hose and dispersion tube should be pitched back to the
humidifier with a gradual slope of 2" per foot (minimum).
OM-228
6" min.
Tee
OM-229
3" to 5" (6" to 12" for
VM25 and VM34)
A water seal must be located in drain line as shown to maintain steam
pressure.
This is not recommended on VM16, VM25, and VM34.
When duct is located more than 10 feet away from unit, vapor hose is
not recommended; 1½” minimum I.D. hard pipe should be used instead.
OM-230
Figure 4-3: Mounted Vertically (Optional)
Electrical power supply, water make-up piping and drain
piping must also be considered. These service connec-
tions are made at the lower right rear corner of the unit.
When mounting on a stud wall (studs 16" on center),
locate studs and position mounting bracket in place so
that each of the two holes (16" apart) will center on a
stud. Mark hole locations and pre-drill 1/4" diameter
pilot holes. Secure bracket to wall with lag bolts pro-
vided.
For hollow block or poured concrete wall mounting,
position mounting bracket in place and mark the second
hole from each end. Drill appropriate pilot hole for two
3/8" toggle bolts or two 3/8" machine bolt lead anchors.
Secure bracket in place.
When the VAPORMIST humidifier is in final operation,
the panel access keys should be removed and secured
in a different place.
VM-IOM-1996 Scan.pdf 4 11/19/2009 9:57:23 AM