(April, 2013)
DRH Series GEN1 Ultrasonic Humidifi er Installation, Operation & Maintenance Manual
1-4
1.4 Specifi cations
Type
DRH Series Ultrasonic Humidifi er
Model
DRH-04 DRH-06 DRH-08 DRH-16
Nebulizing capacity (lb/h)
4.4
6.6
8.8
17.6
Qty. of Ultrasonic nebulizers/unit 4
6
8
16
Power source
48VDC
Rated power consumption (W)
145
220
285
565
Weight
(lb)
19.8 24.3 30.9 50.7
Electrical Characteristics
Allowable voltage range
47-51VDC
Insulation resistance
100 M.Ohms or more (excluding solid-state components).
Dielectric voltage withstand
Operational when 1500VAC is applied for 1 minute (excluding solid-state components).
Operating conditions
Ambient working conditions
34 to 122°F; 90%RH or less.
Water supply quality
DI or RO water. Water conductance <5 microsiemens purity.
Water supply pressure
30 to 60
psi
Water supply temperature
40°F to 104°F
Parts to be provided by user:
DI or RO supply water, Water supply valve, Water supply tubing (1/4” stainless steel or poly tubing rated for DI water),
power supply wiring and control wiring to the control box.
Notes:
1) Calcium, magnesium or other agents that may be contained in the supply water are atomized into
the air together with the mist and may form white powders after the water has evaporated. To avoid
this, always use DI or RO supply water.
2) The nebulizing capacity of the transducer in the ultrasonic nebulizer unit decreases gradually with
use. It should usually be exchanged after about 10,000 to 15,000 hours of operation, (depending
on water quality and suitable voltage), although the unit may continue to run as long as it’s effective
capacity meets the particular requirements.
3) To ensure full warranty coverage, the input voltage to the humidifi er must not exceed 51VDC. If the
input voltage exceeds 51VDC, damage to the transducers and print plates will result.