4
Model
Capacity
lbs/hr
Capacity
kg/hr
Vapor hose
inches
Vapor hose
DN
VM 2-10
up to 30
up to 13.5
1½" hose kit
without drain
DN40 hose
kit without
drain
VM 12-16
up to 57
up to 26
1½" hose kit
with drain
DN40 hose
kit with drain
VM 12-16
over 57
over 26
2" hose kit
without drain
DN50 hose
kit without
drain
VM 21-25
up to 85
up to 38.5
2" hose kit
with drain
DN50 hose
kit with drain
VM 30-35
These models require multiple tube assemblies.
INSTALLATION
Electrical power supply, water makeup piping and drain
piping must also be considered. Electrical power supply
connections are made at the lower or upper right rear corner
of the unit. Water makeup and drain piping connections
are made at the lower left rear corner.
When mounting on a stud wall (studs 16" [400 mm] on
center), locate studs and position lag bolts in place so
that each of the two lags will center on a stud. Mark hole
locations and predrill 1/4" (6 mm) diameter pilot holes
using mounting template on VAPORMIST box. Secure
frame to wall with lag bolts provided.
For hollow block or poured concrete wall mounting,
position template in place and mark the holes. Drill
appropriate pilot hole for two 3/8" (10 mm) toggle bolts
or two 3/8" (10 mm) machine bolt lead anchors. Secure
frame in place.
Examples of mounting the dispersion tube
Figure 4-1: Mounted horizontally in duct
Vapor hose and dispersion tube(s) should be pitched back to the
humidifier with a minimum gradual slope of 2" per foot (15%).
A
single dispersion tube cannot be used with VM-30 or VM-34.
Figure 4-2: Mounted horizontally in duct and
lower than VAPORMIST unit
This is not recommended on models VM-10 through VM-34.
IMPORTANT NOTES:
When duct is located more than 10 feet
away from unit, vapor hose is not recommended; 1½" minimum I.D.
(DN40) hard pipe should be used instead. VM-30 and VM-34 must
use a multiple tube steam dispersion system.
OM-230-1
A water seal must be located in drain line as shown to maintain
steam pressure.
A single dispersion tube cannot be used with
VM-30 or VM-34.
Locating and mounting the VAPORMIST
®
humidifier
The VAPORMIST humidifier is designed to lag bolt to the
wall, and it should be installed in a space located near an
air duct system.
Consider the following when selecting the location of the
humidifier:
• Convenient access to duct
• Electrical and plumbing connections
• Required clearances
The mounting location should provide a minimum clear-
ance of 36" (915 mm) to the front and 24" (610 mm) to
the right side of the unit. This clearance is required for
removing the evaporating chamber and accessing the
electrical compartment. Also, a minimum clearance of
6" (150 mm) to the left side is required for louvers and
enclosure fasteners.
Figure 4-3: Mounted vertically (optional)
Vapor hose
OM-228-1
Tee
OM-229-1
3 to 5" (75-125 mm) for VM 2-16
6 to 12" (150-300 mm) for VM-21-34
Vapor hose sizing
6" min.
(150 mm)
VMOM-0600.PDF 4
11/19/2009 9:59:10 AM
