2
CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Cover
Steam outlet
Heater terminal cover
Cover bolts
Over fl ow
Electric drain
Heater element
Fill valve
Probe
Strainer
OM-770-1
Tank temperature sensor
Tap/softened water model
Product overview
OVERVIEW
Notes:
See Pages 8 and 9 for detailed installation
drawings.
TAP/SOFTENED WATER
CRUV humidifi ers with tap/softened water (shown above) use electricity to
heat tap or softened fi ll water into steam for humidifi cation. A conductivity
probe monitors the water level; therefore, water conductivity must be at least
30 μS/cm for proper operation. CRUV with tap/softened water will not
operate with RO/DI water. For RO/DI water, use CRUV with the RO/DI water
option.
RO/DI WATER OPTION
CRUV humidifi ers with RO/DI water systems (systems using deionized water or
water that has been treated using reverse osmosis) use electricity to heat RO/DI
fi ll water into steam for humidifi cation. Water level is controlled with a fl oat
valve and low water cutoff switch. Float valves are compatible with RO/DI
water only.
Humidifi ers with the RO/DI water option are virtually maintenance free and
require little or no downtime.
WATER TYPE CONVERSION
CRUV tap/softened water humidifi ers can be converted in the fi eld for use with
RO/DI water, and CRUV RO/DI water humidifi ers can be converted in the
fi eld for use with tap/softened water. Contact your DriSteem representative or
distributor for parts and instructions.
mc_061610_1640-CRUV
mc_071912_1545
Supply water guidelines
Supply water quality is an important component
of humidifi er reliability and maintenance.
Examples:
•
Corrosive water can decrease the service life
of the humidifi er.
•
Excessive water hardness can increase the
humidifi er maintenance requirements.
To maximize humidifi er service life and
minimize humidifi er maintenance, DriSteem
has established guidelines for supply water See
Table 2-1.
FIGURE 2-1: CRUV HUMIDIFIER
Supply water guidelines
Table 2-1:
DriSteem supply water guidelines
Chlorides*
RO or DI water
Softened water
Tap water
* Damage caused by
chloride corrosion is
not covered by your
DriSteem warranty.
< 5 ppm
< 25 ppm
< 50 ppm
Total hardness
Tap water
< 500 ppm
pH
RO, DI, or softened water
Tap water
7 to 8
6.5 to 8.5
Silica
< 15 ppm
You may wish to take action to mitigate
potential negative effects to your
humidifi er. Supply water outside of these
guidelines may void your DriSteem
warranty. Please contact your DriSteem
Representative or DriSteem Technical
Support if you need advice.
