(April, 2013)
DRH Series GEN1 Ultrasonic Humidifi er Installation, Operation & Maintenance Manual
2-2
The humidifi er must be installed horizontally and level to prevent the fl oat switches from giving a false reading.
Prepare hanging bolts for installing from the ceiling or brackets for wall mounting (see Figure 1). The distance
from the humidifi er to the ceiling should be a minimum of 18” and the distance to the wall must be 3” or more.
For the installation mounting base dimensions, see the installation drawing provided with your unit.
Figure 2- Locating the Humidifi er
NOTE
Humidity control can only be achieved in a sealed room or if the room has vapor barriers installed. It is
recommended that walls, ceilings and fl oors be sealed to prevent migration of humidity.
2.3 Mounting/Placement
STULZ ultrasonic humidifi ers are designed for mounting to a fl at surface. Ensure the base is capable of support-
ing the weight of the unit. Weight estimates can be found on the installation drawing provided with your unit.
Secure the unit with fasteners (fi eld supplied by others), so that it will not move during operation. Ensure the front
edge of the humidifi er is not hanging over the edge of the support bracket.
2.4 Supply and Drain Piping
The humidifi er will require a fi eld installed water supply line and drain line. Refer to the piping diagram provided
with your unit for details. For the water supply, use DI or RO water. The water supply to the humidifi er cannot
be taken directly from the public water service. Untreated supply water will leave a residue in the conditioned
space where “white powder” is produced after evaporation from the calcium or magnesium which is dissolved in
the water. In cases where water quality, especially “residue from evaporation”, “pH”, “total hardness” and “water
conductivity” exceeds or is outside the range of standard, routine maintenance intervals to ensure continuous
operation will be more frequent than usual. Also, the operating life of the transducers and print plates will be
signifi cantly reduced.