Page 4 • DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual
Choosing a location for the humidifier
When selecting a location for the humidifier, consider the following:
• Proximity to duct
Install the humidifier near the air duct system where the
dispersion assembly will be located. The maximum recommended
length for vapor hose connecting a single humidifier to a
dispersion assembly is 10' (3 m). The maximum recommended
developed length for tubing or pipe connecting a single
humidifier to a dispersion assembly is 20' (6 m). See the
dispersion section of this manual for more information about
installing dispersion assemblies.
• Elevation of the installed dispersion assembly
The recommended installation location for the dispersion
assembly is at an elevation higher than the humidifier. However,
if the dispersion assembly must be installed at an elevation
lower than the humidifier, install a drip tee and drain as shown
in Figure 24-1. Before installing a dispersion assembly or
interconnecting piping, review all pitch requirements in the
dispersion section of this manual.
• Required clearances (see Figure 4-1)
• Electrical connections
Electrical power supply connections are made at the bottom panel
corner of the electrical enclosure. The system wiring is inside
the cover of the control cabinet. See the field wiring instructions
starting on Page 11.
• Supply water and drain piping connections
Water supply piping connections are made on the bottom left
side of the unit. Drain piping connections are made at the bottom
center of unit. See the field piping illustration and instructions
starting on Page 8.
• Exterior wall insulation
Do not install the humidifier on an exterior wall unless that wall
is properly insulated.
Choosing a location for the dispersion assembly and control
devices
See Page 20 for recommended installation locations for the
dispersion assembly. See Page 13 for recommended installation
locations for control devices such as humidistats and transmitters.
Choosing a location
Important:
Install humidifier only in locations that meet
the following temperature and relative
humidity (RH) requirements:
Maximum ambient temperature:
104
°F (40 °C)
Minimum ambient temperature:
41
°F (5 °C)
Maximum ambient humidity:
80% RH (non-condensing)
Note:
To open the humidifier electrical access door,
rotate the screw counter-clockwise ¼ turn.
The door pivots toward the front of the unit
from the bottom of the door. To close the
electrical access door, position screw slot so
that it is horizontal and then push the door
shut. Make sure sides of painted door go
outside stainless steel enclosure.
To open the humidifier steam cylinder access
door, rotate the screw counter-clockwise ¼
turn, lift door out of position, and remove
ground wire. Replace door in reverse order
of these instructions.
Figure 4-1:
Recommended minimum clearances
OM-7359
Top: 16"
(400 mm)
Floor: 16" (400 mm)
Between units:
4" (100 mm)
Side: 4" (100 mm)
Front:
36"
(914 mm)
XT_IOM_Jan_2008.pdf 6 11/19/2009 10:13:34 AM
