DriSteem CRUV-DI-8, CRUV-DI-2, CRUV-DI-4, CRUV-DI-6, CRUV-DI-10 Installation Instructions And Maintenance Operations Manual
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DRI-STEEM
TM
CRUV
ELECTRIC STEAM HUMIDIFIER
Installation Instructions
and
Maintenance Operations Manual
For Toll-Free Customer Support,
Call: 1-800-328-4447
cETL LISTEDETL LISTED
TABLE OF CONTENTS
TO THE PURCHASER AND THE INSTALLER
Thank you for purchasing our CRUV
you total satisfaction and many years of trouble-free service. Proper installation and operating practices will assure
you of achieving that objective. We therefore urge you to become familiar with the contents of this manual.
CRUV Humidifier......................................................................... 3
Installation .................................................................................. 4
Specifications, Capacities, and Dimensions ............................6
Start-up and Operation ............................................................... 8
Maintenance ................................................................................ 9
TM
humidification equipment. We have designed and built this equipment to give
DRI-STEEM Humidifier Company
Trouble-Shooting Guide............................................................. 10
Replacement Parts ...................................................................... 1 4
Maintenance Service Record ..................................................... 1 9
Two-Year Limited Warranty........................................................ 20
2
CRUVTM HUMIDIFIER
Figure 3-1: The CRUV Humidifier
(CRUV 6-25 shown, CRUV 2, 4, 30, and 34 not shown)
Probe
Steam outlet
Strainer
Fill
valve
Over
flow
Electric drain
Heater terminal cover
Cover
Cover
bolts
Heater
element
Tank
temperature
sensor
OM-770-1
Figure 3-2: The CRUV-DI Humidifier
(CRUV-DI 6-25 shown, CRUV-DI 2, 4, 30, and 34 not shown)
Float switch
Steam outlet
Water
supply
Over
flow
Heater terminal cover
Cover
Cover
bolts
CRUV Humidifier
This humidifier is designed to be used with either softened or unsoftened water (softened water will greatly
reduce humidifier maintenance and improve overall
system performance). The probe-type level control
system requires water conductivity of at least 100
micromhos/cm (2 grains/gal or 34.2 mg/liter) to function,
and therefore, will not operate with demineralized water.
For humidification using demineralized water, see
CRUV-DI below.
CRUV-DI Humidifiers
The evaporating chamber of this humidifier is
constructed of corrosion-resistant stainless steel alloy
to resist the corrosive effects of mineral-free water.
Since the CRUV-DI humidifier is designed for use with
deionized or RO demineralized water, there is no need to
clean the unit, although an annual inspection of the
evaporating chamber is recommended.
½" SST
ball valve
Heater
element
Tank temperature sensor
OM-770-2
3
INSTALLATION
Locate the CRUVTM humidifier near an electric power
source, water supply and a drain. Verify that sufficient
room is provided for a water seal in the drain piping. Refer
to Figure 4-3.
In an Air-Conditioning Unit
When installing a humidifier inside an air conditioning unit,
provide adequate support; allow easy access for removing
and servicing the evaporating chamber, and provide
adequate clearance to install the vapor hose and dispersion tube (see figure 4-1) and water seal. Refer to page 6
for mounting hole locations.
In a Duct
When installing the dispersion tube in a duct, allow for a
continuous pitch of the vapor hose back to the evaporating
chamber. Otherwise, use a water seal and drain (see
examples in figures 4-2 and 5-1). The dispersion tube can
also be placed vertically in the duct with some models
(see figure 5-2).
Place the control cabinet or electrical sub-panel in a
grounded protective metal enclosure and mount in a dry
and accessible location.
Examples of Installation in an Air Stream
Figure 4-1: Installation in an Air-Conditioning Unit
If draining the evaporating chamber by gravity is not
possible, use a small condensate lift pump, rated to pump
212° F/100°C water.
Figure 4-2: Horizontal Dispersion Tube
Duct
Vapor Hose
OM-2006
Figure 4-3: Piping for the CRUV
Water seal must
not be above
bottom of frame
12" (305 mm)
Note: provide 1"
(25 mm) air gap to
eliminate back
siphonage
Floor drain
Sanitary
sewer
OM-2008
OM-2003-1
Horizontal mounting of dispersion tube in a duct, connected
via vapor hose to a wall-mounted CRUV humidifier.
4
INSTALLATION
Piping
Water make-up piping should be of corrosion-resistant,
code-approved material (copper, steel, or plastic). The
final connection size is ¼" NPT. In cases where water
hammer is possible, a shock arrestor should be
considered.
Drain piping should be of code approved material
(copper, steel, or plastic rated for 212°F/100°C minimum).
The ¾" O.D. copper sweat connection should not be
reduced in size. (See figure 4-3).
If there is no sewer available for drainage, the unit can
be piped for manual drainage. Consult factory for instructions.
Wiring
The CRUVTM is designed for a single source of electric
power supply. Future tank removal will be easier if plugs or
quick connects and extra long conduits are used to
provide electrical power to components from subpanel.
Wiring must meet all electrical codes, the current characteristics, and capacity requirements should be checked
against the nameplates. The electrical subpanel should be
mounted in a location convenient for service. Wiring must
be in accordance with all governing codes, and with the
humidifier wiring diagram. The wiring diagram(s) are
shipped loose with the unit. The wiring between the control
cabinet and humidifier must be rated at 105°C, 600V.
Caution: Only qualified electrical personnel
should perform installation procedures.
Figure 5-2: Vertical Dispersion Tube
Duct
OM-775-1
The dispersion tube can be mounted vertically in the duct.
Note: When dispersion tube is more than 10' (3 m) from unit,
insulated, 1½" (38 mm) diameter minimum rigid tubing or
pipe should be used instead of vapor hose. This application
is not recommended for CRUV-10 through CRUV-34.
Figure 5-3: RAPID-SORB® Rapid Absorption Tube
Bank
Duct
Figure 5-1: Horizontal Dispersion Tube Lower Than
Humidifier
Duct
6" (152 mm)
Tee
8"
(200 mm)
Water Seal
When horizontally mounting the dispersion tube in an air
stream that is located lower than the CRUV humidifier a water
seal (to prevent steam from escaping at the open drain) must
be provided in the drain line and line extended to open drain,
as shown, to drain the condensate. A multiple dispersion
tube bank must be used with a CRUV-30 or CRUV-34
because of its high output (see figure 5-3).
OM-774-1
OM-831-1
When rapid absorption is extremely critical, a RAPID-SORB
multiple-tube bank can provide 100% steam absorption within
three feet or less - at any duct temperature. A multiple tube or
RAPID-SORB dispersion system is required for CRUV-30 or
CRUV-34.
For complete information on calculating the number of
dispersion tubes required to satisfy steam absorption
distance requirements, consult your sales representative,
the DRI-STEEM factory, or use DRI-STEEM's DRI-CALC
Humidification Sizing and Selection Software.
5
®
SPECIFICATIONS, CAPACITIES, AND DIMENSIONS
CRUVTM Mechanical/Electrical Specifications
Top view
OM-2004
End Elevation
OM-2002
15.0
G 4.25
H
E
G
4.25
C
A
Side Elevation
(CRUV 25, 30, 34)
A
F
D
OM-759-1
0.250
Table 6-1: CRUV Dimensions (in inches)
ledoMABCDEFGH
4&2-ID-VURC/VURC
F
01&8,6-ID-VURC/VURC
61&21-ID-VURC/VURC
NOTE: Charts shown here can be used for CRUV-DI sizing.
.ni53.4105.5100.988.705.1144.1183.26.6
mm46349392200229219233.067.761
.ni53.4100.6183.4188.888.6149.2150.53.9
mm46360456352292492372.8212.632
.ni53.4100.6183.4186.0188.6157.4150.53.9
mm46360456317292457372.8212.632
.ni53.4100.6183.4152.2188.6152.6150.53.9
43&03,52,12-ID-VURC/VURC
mm46360456311392431472.8212.632
Table 6-2: CRUV Mechanical/Electrical Specifications and Capacities
2-VURC
2-ID-VURC
ruoh/tuptuO
)gk/lag/sbl(
)gk/sbl(
.twgnippihS
*)gk/sbl(
:taspmA
ø1/v021
ø1/v802 6.92.918.825.83 --------
***ø1/v032 0.80.610.429.139.93 -------
ø1/v042 3.87.610.523.337.14 -------
ø1/v084 2.43.85.217.618.020.522.923.338.34 ---
ø1/v006 3.37.60.013.317.610.023.327.620.537.14--
ø3/v802 -**7.61**0.52**3.33**1.923.339.834.44 ----
ø3/v042 -**4.41**7.12**9.82**3.529.827.335.83 ----
ø3/v004 -**7.8**0.31**3.71**2.513.712.021.323.031.633.34-
ø3/v084 -**2.7**8.01**4.41**6.214.418.612.913.521.031.639.04
ø3/v006 -**8.5**7.8**5.11**1.015.115.314.512.021.429.827.23
Wk0.20.40.60.80.010.21410.610.120.520.030.43
7.2/7./64.5/4.1/212.8/2.2/819.01/9.2/426.31/6.3/034.61/4.4/631.91/5/248.12/8.5/840.92/7.7/360.43/0.9/574.14/9.01/093.64/2.21/201
.twgnitarepO
02/3402/4483/3883/3854/00154/00193/5854/00115/31115/31135/71135/711
8/819/9181/0481/0402/4402/4481/7302/4412/7412/7432/1532/15
7.61 -----------
* Add 9 lbs (4 kg) to total weight for models with pre-wired subpanel.
** For wire sizing, highest leg draw is due to current unbalance in some cases.
*** Output capacity and kW derate of 7%.
6
4-VURC
4-ID-VURC
6-VURC
6-ID-VURC
8-VURC
8-ID-VURC
01-VURC
01-ID-VURC
21-VURC
21-ID-VURC
41-VURC
41-ID-VURC
61-VURC
61-ID-VURC
12-VURC
12-ID-VURC
52-VURC
52-ID-VURC
03-VURC
03-ID-VURC
43-VURC
43-ID-VURC
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