DriSteem CRUV 4, CRUV 2, CRUV 8, CRUV 6, CRUV 10 Installation, Operation And Maintenance Manual

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CRUV

Electric Humidifier

Installation, Operation, and Maintenance Manual

Page 2

WARNINGS AND CAUTIONS

Warnings and cautions

WARNING

Indicates a hazardous situation that could result in death or serious injury if instructions are not followed.

mc_051508_1145

WARNING

Attention installer

Read this manual before installing, and leave this manual with product owner. This product must be installed by qualiﬁ ed HVAC and electrical contractors and in compliance with local, state, federal, and governing codes. Improper installation can cause property damage, severe personal injury, or death as a result of electric shock, burns, or ﬁ re.

DriSteem Technical Support: 800-328-4447

Read all warnings and instructions

Read this manual before performing service or maintenance procedures on any part of the system. Failure to follow all warnings and instructions could produce the hazardous situations described, resulting in property damage, personal injury, or death.

Failure to follow the instructions in this manual can cause moisture to accumulate, which can cause bacteria and mold growth or dripping water into building spaces. Dripping water can cause property damage; bacteria and mold growth can cause illness.

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Hot surfaces and hot water

This steam humidiﬁ cation system has extremely hot surfaces. Water in tanks, steam pipes, and dispersion assemblies can be as hot as 212 °F (100 °C). Discharged steam is not visible. Contact with hot surfaces, discharged hot water, or air into which steam has been discharged can cause severe personal injury. To avoid severe burns, follow the cool-down procedure in this manual before performing service or maintenance procedures on any part of the system.

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CAUTION

Indicates a hazardous situation that could result in damage to or destruction of property if instructions are not followed.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 3

Warnings and cautions

WARNING

Disconnect electrical power

Disconnect electrical power before installing supply wiring or performing service or maintenance procedures on any part of the humidiﬁ cation system. Failure to disconnect electrical power could result in ﬁ re, electrical shock, and other hazardous conditions. These hazardous conditions could cause property damage, personal injury, or death.

Contact with energized circuits can cause property damage, severe personal injury, or death as a result of electrical shock or ﬁ re. Do not remove humidiﬁ er electrical panel cover, heater terminal cover, or subpanel access panels until electrical power is disconnected.

Follow the shutdown procedure in this manual before performing service or maintenance procedures on any part of the system.

mc_052410_1510

Electric shock hazard

If the humidiﬁ er starts up responding to a call for humidity during maintenance, severe bodily injury or death from electric shock could occur. To prevent such start-up, follow the procedure below before performing service or maintenance procedures on this humidiﬁ er (after the tank has cooled down and drained):

• If the humidiﬁ er is equipped with a Vapor-logic

• Shut off all electrical power to humidiﬁ er using ﬁ eld-installed fused disconnect, and lock all power disconnect switches in OFF position.

• Close ﬁ eld-installed manual water supply shut-off valve.

mc_050808_1540-CRUV

controller, use the keypad to change the control mode to Standby.

CAUTION

Hot discharge water

Discharge water can be as hot as 212 °F (100 °C) and can damage the drain plumbing.

To prevent such damage from humidiﬁ ers without water tempering, allow the tank to cool before draining.

Humidiﬁ ers equipped with a water tempering device such as a DriSteem Drane-kooler need fresh make-up water in order to function properly. Make sure the water supply to the water tempering device remains open during draining.

Excessive supply water pressure

Supply water pressure greater than 80 psi (550 kPa) can cause the humidiﬁ er to overﬂ ow.

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CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

iii

Page 4

Table of contents

WARNINGS AND CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Supply water guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Water type conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Dispersion options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Capacities, electrical specifications, and weights . . . . . . . . . . . . . . . . . . 4

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Selecting a location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CRUV in a packaged unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Dispersion in a duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Dispersion control devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Piping: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Supply water and drain piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Drane-kooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Sensor placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Dispersion: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Selecting the dispersion assembly location . . . . . . . . . . . . . . . . . . . 14

High-efficiency Tube option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Drip tee installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Interconnecting piping requirements . . . . . . . . . . . . . . . . . . . . . . . . 16

Single tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Rapid-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Ultra-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

ATTENTION INSTALLER

Read this manual before installing. Leave manual with product owner.

DriSteem Technical Support 800-328-4447

Where to find more information

On our Web site:

The following related documents can be viewed, printed or ordered from our web site, www.dristeem.com

• Catalogs: – CRUV – Ultra-sorb

• Installation, Operation, and Maintenance manuals:

– Ultra-sorb – Vapor-logic® controller (includes humidiﬁ er

operation and troubleshooting)

• DriSteem Design Guide (includes steam loss tables and general humidiﬁ cation information)

In DriCalc:

DriCalc® is our humidiﬁ cation system sizing and selection software, which can be ordered from our website. Also in DriCalc:

• Library of installation guides

• Dispersion and sensor placement in ducts and air handlers

• Vertical airﬂ ows

Or call us at 800-328-4447

While obtaining documents from our web site or from DriCalc is the quickest way to review our literature, we will also mail to you any literature you need.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 5

Table of contents

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Start-up checklist: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

LW series controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Vapor-logic controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Start-up and operation: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

LW series controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Vapor-logic controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Water quality and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Skim duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Cool down humidifier (LW series controller) . . . . . . . . . . . . . . . . . . 34

Cool down humidifier (Vapor-logic controller) . . . . . . . . . . . . . . . . . 34

Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Off-season shut-down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 37

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Cool down humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Off-season shut-down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Troubleshooting: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

LW series controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

LW series controller and RO/DI water . . . . . . . . . . . . . . . . . . . . . . 41

Replacement parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Subpanel with LW series controller . . . . . . . . . . . . . . . . . . . . . . . . 44

Subpanel with time delay and relay . . . . . . . . . . . . . . . . . . . . . . . . 46

Subpanel with Vapor-logic option . . . . . . . . . . . . . . . . . . . . . . . . . 48

Subpanel with Vapor-logic and SSR options . . . . . . . . . . . . . . . . . . 50

Keypad/display and troubleshooting

The Vapor-logic Installation and Operation Manual, shipped with your humidiﬁ er if

ordered with optional Vapor-logic control, is a comprehensive operation manual. Refer to it for information about using the keypad/display and Web interface, and for troubleshooting information.

Download DriSteem literature

Most DriSteem product manuals can be downloaded, printed, and ordered from our web site: www.dristeem.com

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WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 6

OVERVIEW

Supply water guidelines

Product overview

FIGURE 2-1: CRUV HUMIDIFIER

Tap/softened water model

Probe

Steam outlet

Strainer

Fill valve

Over ﬂ ow

OM-770-1

Electric drain

TAP/SOFTENED WATER

Heater terminal cover

Cover

Cover bolts

Heater element

Tank temperature sensor

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.

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.

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.

Total hardness

Tap water < 500 ppm

RO, DI, or softened water Tap water

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.

< 5 ppm

< 25 ppm

< 50 ppm

7 to 8

6.5 to 8.5

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.

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CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Notes: See Pages 8 and 9 for detailed installation drawings.

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Page 7

OVERVIEW

Product overview

DISPERSION OPTIONS

Dispersion options shown on this page are available for CRUV humidiﬁ ers. See the installation instructions beginning on Page 6.

FIGURE 3-1: ULTRA-SORB DISPERSION FIGURE 3-2: WATER LEVEL CONTROL FOR TAP/SOFTENED

WATER HUMIDIFIER

OM-7475

VLC-OM-030

Fill valve closes when water level rises to this probe.

Fill valve opens when water level is below this probe.

Low-water cutoff. Power to heaters is cut if water level drops below this probe.

FIGURE 3-3: RAPID-SORB DISPERSION

OM-2007

FIGURE 3-5: SINGLE OR MULTIPLE TUBE DISPERSION

Humidiﬁ ers using tap or softened water control water levels electronically using a three-rod probe. The controller responds with the above actions when the water level reaches each rod.

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FIGURE 3-4: WATER LEVEL CONTROL FOR RO/DI WATER OPTION HUMIDIFIER

Supply water connection

Float ball

Float rod

OM-7396

Humidiﬁ ers using RO/DI water control water levels using a ﬂ oat valve and low-water cutoff switch.

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OM-2006

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 8

OVERVIEW

Capacities, electrical speciﬁ cations, and weights

Table 4-1: CRUV capacities, electrical specifications, and weights

CRUV model

kW lbs/hr kg/h 120V 208V 240V 277V 480V 600V 208V 240V 277V 480V 600V lbs kg lbs kg

2 6 2.7 16.7 9.6 8.3 7.2 4.2 3.3 —————25114520

4 12 5.4 33.3 19.2 16.7 14.4 8.3 6.7 16.7* 14.4* 12.5 7.2* 5.8* 27 12 47 21

6 18 8.2 — 28.8 25.0 21.7 12.5 10.0 25.0* 21.7* 18.8 10.8* 8.7* 37 17 75 34

8 24 10.9 — 38.5 33.3 28.9 16.7 13.3 33.3* 28.9* 25.0 14.4* 11.5* 37 17 75 34

10 30 13.6 — — 41.7 36.1* 20.8 16.7 29.1* 25.3* 21.9 12.6* 10.1* 39 18 90 41

12 36 16.3 — — — 43.3 25.0 20.0 33.3 28.9 25.0 14.4 11.5 39 18 90 41

14 42 19.1 ————29.2 23.3 38.9 33.7 29.2 16.8 13.5 39 18 90 41

16 48 21.8 ————33.3 26.7 44.4 38.5 33.3 19.2 15.4 39 18 90 41

21 63 28.6 ————43.8 35.0 — — 43.8 25.3 20.2 43 20 104 47

25 75 34.0 —————41.7 — — — 30.1 24.1 43 20 104 47

30 90 40.9 —————————36.1 28.9 48 22 109 49

Maximum

steam

capacity**

Single-phase Three-phase

Current draw (amps)

Shipping

weight***

Operating

weight***

34 102 46.3 —————————40.9 32.7 48 22 109 49

* For wire sizing, the highest leg draw is shown due to current imbalance. ** Total humidiﬁ er load = load to meet design conditions + load to compensate for steam loss from the dispersion assembly and interconnecting

piping. If total humidiﬁ er load is more than the humidiﬁ er’s maximum capacity, design conditions will not be met. For steam loss data see the DriSteem Design Guide available for downloading and printing at www.dristeem.com

*** Depending on conﬁ guration, add up to 28 lbs (13 kg) for weight of control cabinet, subpanel, and other electrical control components.

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Table 4-2: Steam connection sizes

CRUV model Steam outlet

2, 4, 6, 8

10, 12, 14 ,16

21, 25, 30, 34

mc_052410_1705-CRUV

1 ½ " hose or NPT connection

1 ½ " or 2" hose or NPT connection

2" hose or NPT connection

FIGURE 4-1: STEAM OUTLET CONNECTIONS

Hose clamp (for steam hose)

The steam outlet is designed to connect to a steam hose or NPT connection. Tap/softened water CRUV shown.

mc_052510_1531-CRUV

DC-1168

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 9

Dimensions

FIGURE 5-1: CRUV DIMENSIONS

OVERVIEW

Tap/softened water CRUV shown

Electrical conduit knockouts:

• CRUV Models 2 and 4 have combination knockout for ½" and ¾" conduit connectors; knockout diameters are 22.3 mm and

28.6 mm.

• CRUV Models 6 through 34 have combination knockout for ¾" and 1" conduit connectors; knockout diameters 28.6 mm and

34.9 mm.

Top view

Front viewSide view

Electrical conduit knockouts

OM-2004, OM-2002, OM-2003 mc_071210_1445

Table 5-1: CRUV dimensions

ABCDE F

CRUV model

inches mm inches mm inches mm inches mm inches mm inches mm

2, 4 4.50 114 15.50 394 12.50 318 9.00 229 9.00 229 12.13 308

6, 8 7.18 183 16.00 406 16.88 429 10.00 254 14.34 369 13.25 337

10, 12, 14, 16 7.18 183 16.00 406 16.88 429 11.75 199 14.34 364 14.88 378

21, 25, 30, 34 7.18 183 16.00 406 16.88 429 13.25 337 14.34 364 16.38 416

mc_071210_1446

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 10

INSTALLATION

Selecting a location

Locate the CRUV humidiﬁ er near an electric power source, a water supply, and a drain. Verify that sufﬁ cient room is provided for a water seal in the drain piping. See Figures 8-1 and 9-1.

Place the control cabinet or electrical subpanel in a grounded protective metal enclosure, and mount in a dry and accessible location.

CRUV IN A PACKAGED UNIT

When installing a humidiﬁ er inside a packaged unit, provide adequate support. Allow easy access for removing and servicing the evaporating chamber, and provide adequate clearance to install the steam hose and dispersion tube and water seal.

DISPERSION IN A DUCT

When rapid absorption is extremely critical, a Rapid-sorb can provide 100% steam absorption within three feet or less at any duct temperature. A multiple tube or Rapid-sorb is required for CRUV Models 30 and 34 because of their high output. See Figure 7-1 and the “Rapid-sorb” section beginning on Page

22.

When installing a dispersion tube in a duct, allow for a continuous pitch of the steam hose back to the evaporating chamber (Figure 6-2), or use a water seal and drain (Figure 7-1).

If draining the evaporating chamber by gravity is not possible, use a small condensate pump rated for 212 °F/100 °C water.

FIGURE 6-1: INSTALLATION IN AN AIR CONDITIONING UNIT

OM-2008

CRUV with a single dispersion tube in a packaged air conditioning unit

FIGURE 6-2: HORIZONTAL DISPERSION TUBE

The dispersion tube can be mounted vertically in the duct (Figure 7-2).

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 steam hose. This application is not recommended for CRUV Models 10 through 34.

Duct

Steam hose

OM-2006

Horizontal mounting of dispersion tube in a duct, connected via steam hose to a wall-mounted CRUV humidiﬁ er.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 11

Selecting a location

INSTALLATION

HUMIDIFIER

When selecting a location for the humidiﬁ er, consider the following:

• Proximity to the duct

Install the humidiﬁ er near the air duct system where the dispersion assembly

will be located. The maximum recommended length for steam hose connecting a single humidiﬁ er to a dispersion assembly is 10' (3 m). The maximum recommended developed length for tubing or pipe connecting a single humidiﬁ er to a dispersion assembly is 20' (6 m).

For more information about installing dispersion assemblies, see

“Dispersion,” beginning on Page 14.

• Elevation of the installed dispersion assembly

The recommended installation location for the dispersion assembly is at an

elevation higher than the humidiﬁ er. However, if the dispersion assembly must be installed at an elevation lower than the humidiﬁ er, install a drip tee and drain. See “Drip tee installation” on Page 15.

Before installing a dispersion assembly or interconnecting piping, review all

pitch requirements in the “Dispersion” section of this manual.

• Required clearances (see Figure 5-1)

• Electrical connections

FIGURE 7-1: RAPID-SORB DISPERSION

Duct

OM-831-1

FIGURE 7-2: VERTICAL DISPERSION TUBE

Duct

Electrical power supply connections are at the lower or upper right rear

corner of the unit. See “Wiring” on Page 12.

• Supply water and drain piping connections

Water supply piping and drain connections are at the lower left rear corner

of the unit. See the piping illustrations and instructions starting on Page 8.

• Exterior wall insulation

Install the humidiﬁ er on an exterior wall only if the wall is properly

insulated.

DISPERSION CONTROL DEVICES

See Figure 13-1 for recommended installation locations for the dispersion assembly and associated control devices.

mc_062810_0928-NA

OM-775-1

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 12

INSTALLATION

Piping:

FIGURE 8-1: CRUV (TAP/SOFTENED WATER) FIELD PIPING OVERVIEW

Water supply line:

• ¼" NPT (DN8) connection size

• 25 to 80 psi (175 to 550 kPa) required water pressure

• First 3’ (1 m) of supply line must be rated for 212 ºF (100 ºC)

If water piping to humidiﬁ er is nonmetallic, we recommend a 2” (50 mm) metallic water seal or loop in the supply line to isolate steam during maintenance.

Tap/softened water

Water inlet strainer

Water supply inlet

Shock arrester recommended to reduce water hammer

If run is over 10' (3 m), increase pipe to 1¼" (DN32)

Pitch 1/8"/ft

(1%)

2" (51 mm)

recommended

Steam steam hose

Heater terminal cover

Tank surfaces will reach 212 °F (100 °C) when operating. Provide outer protection from direct contact, but allow for natural ventilation.

Install plumb

Tank support

DC-1133

Drain

Skim/overﬂ ow port

12" (305 mm)

minimum

1" (25 mm) air gap

Open drain required. See ﬁ rst note below.

Notes:

• Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam; otherwise, condensation may form on nearby surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.

• Offset hu mid i ﬁ er from ﬂ oor drain to prevent ﬂ ash steam from rising into the hu mid i ﬁ er.

• Dashed lines indicate provided by installer.

• The water supply inlet is more than 1" (25 mm) above the skim/overﬂ ow port, eliminating the pos si bil i ty of backﬂ ow or si phon ing from the tank. No additional backﬂ ow prevention is required; however, governing codes prevail.

• Damage caused by chloride corrosion is not covered by your DriSteem warranty.

mc_071210_1603

¾" (DN20) union for skim, drain, and overﬂ ow connection; plumbing rated for 212 °F (100 °C)

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 13

INSTALLATION

Piping:

FIGURE 9-1: CRUV (RO/DI WATER OPTION) FIELD PIPING OVERVIEW

If water piping to humidiﬁ er is nonmetallic, we recommend a 2" (50 mm) stainless steel water seal or loop in the supply line to isolate steam during maintenance

Water supply line:

• ¼" NPT (DN8) connection size

• 25 to 80 psi (175 to 550 kPa) required water pressure

• First 3’ (1 m) of supply line must be rated for 212 ºF (100 ºC)

RO/DI water option

Water inlet strainer, by installer

Water supply inlet

Skim/overﬂ ow port

If run is over 10' (3 m), increase pipe to 1¼" (DN32)

Pitch 1/8"/ft

(1%)

2" (51 mm)

recommended

Steam steam hose

Heater terminal cover

Tank surfaces will reach 212 °F (100 °C) when operating. Provide outer protection from direct contact, but allow for natural ventilation.

Install plumb

Tank support

DC-1135

¾" (DN20) union for skim, drain, and overﬂ ow connection;

12" (305 mm)

minimum

1" (25 mm) air gap

Open drain required. See ﬁ rst note below.

Notes:

• Offset hu mid i ﬁ er from ﬂ oor drain to prevent ﬂ ash steam from rising into the hu mid i ﬁ er.

• Dashed lines indicate provided by installer.

• Damage caused by chloride corrosion is not covered by your DriSteem warranty.

mc_071210_1604

plumbing rated for 212 °F (100 °C)

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 14

INSTALLATION

Supply water and drain piping Piping:

Supply water piping may be of any code-approved material (copper, steel, or plastic). The ﬁ ll valve connection size is a ¼" pipe thread (DN8) ﬁ tting. In cases where water hammer may be a possibility, consider installing a shock arrestor. Water pressure must be between 25 psi and 80 psi (175 kPa and 550 kPa).

If water piping to humidiﬁ er is nonmetallic, we recommend that the ﬁ rst 3' (1 m) of water supply piping from the humidiﬁ er be metallic with a 2" (50 mm) water seal or loop in the supply line to isolate steam from nonmetallic supply piping.

Drain piping may be of any code-approved material (copper, steel, or plastic rated for 212 °F [100 °C] minimum). If drainage by gravity is not possible, use a reservoir pump rated for 212 °F (100 °C) water.

The ﬁ nal connection size is ¾" (DN20) copper for the tank and frame drains. Do not reduce this connection size. Pipe the tank and frame drains separately, as shown in Figures 8-1 and 9-1, to prevent backﬂ ow of drain water into the humidiﬁ er cabinet.

If the equivalent length of pipe from the humidiﬁ er drain to the plumbing system drain is more than 10' (3 m), increase the pipe size to 1¼" (DN32).

CAUTION

Hot discharge water

Discharge water can be as hot as 212 °F (100 °C) and can damage the drain plumbing.

To prevent such damage from humidiﬁ ers without water tempering, allow the tank to cool before draining.

Excessive supply water pressure

Supply water pressure greater than 80 psi (550 kPa) can cause the humidiﬁ er to overﬂ ow.

mc_030910_1440

See Figures 8-1 and 9-1 for more piping instructions.

Important: Install unions in the water supply and drain lines as shown in Figures 8-1 and 9-1 to allow tank removal.

mc_062810_0930-CRUV

FIGURE 10-1: DRANE-KOOLER WATER TEMPERING DEVICE

OM-7547

DriSteem's Drane-kooler, shown mounted to a CRUV humidiﬁ er, tempers discharged water. For other Drane-kooler mounting options or for more information, contact your DriSteem representative/distributor, or view the Drane-kooler product data sheet in the literature section at www.dristeem.com.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 15

INSTALLATION

Piping:

FIGURE 11-1: FIELD PIPING CONNECTIONS, DRANE-KOOLER™ WATER TEMPERING DEVICE

Notes:

• Dashed lines indicate provided by installer

• Total length of pipe between humidiﬁ er and Drane-kooler not to exceed 10' (3 m)

Water supply shut-off valve

Drane-kooler

Vacuum breaker

Union

3/8" NPT (DN10) cold water inlet; water pressure 25 to 80 psi (172 to 552 kPa); maximum temperature 70 °F (21 °C)

Floor

Field piping

3/4" NPT (DN20) hot drain water inlet. For runs longer than 10' (3 m), increase to 1" NPT (DN25).

Union

Tempered water outﬂ ow 12 gpm (45.4 L/m) at 140 °F (60 °C)

Union

Drane-kooler Part No. 902205 (NPT connections) Part No. 902206 (BSP connections)

mc_050610_1335-no-frame-drain

FIGURE 11-2: LIFTING DRAIN WATER

Discharge piping

(by installer) Inlet drain water piping (by installer)

Check valve

DC-1117

Condensate pump

Note: Use a condensate pump rated for your application. Pumps are rated by ﬂ uid temperature, head (pressure), and ﬂ ow (gpm). Contact your local DriSteem representative for pump selection.

mc_022410_1155

2" NPT (DN50) tempered water outlet

DC-1120

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 16

INSTALLATION

Wiring

HUMIDIFIER FIELD WIRING

All wiring must be in accordance with all governing codes, and with the humidiﬁ er wiring diagrams. The diagrams are located inside the removable subpanel cover on the right side of the humidiﬁ er cabinet. Power supply wiring must be rated for 220 °F (105 °C).

When selecting a location for installing the humidiﬁ er, avoid areas close to sources of electromagnetic emissions such as power distribution transformers.

The ﬁ ll valve, drain valve, probes, and temperature sensors use Class 2, 24 VAC power.

The use of semiconductor fusing sized per the National Electric Code is recommended with the SSR option.

GROUNDING REQUIREMENTS

The approved earth ground must be made with solid metal-to-metal connections and must be a good conductor of radio frequency interference (RFI) to earth (multistranded conductors).

WARNING

Electric shock hazard

Only qualiﬁ ed electrical personnel should perform ﬁ eld wiring installation procedures. Improper wiring or contact with energized circuits can cause property damage, severe personal injury, or death as a result of electric shock and/or ﬁ re.

Do not remove the humidiﬁ er electrical panel cover or the heater terminal cover until electrical power is disconnected. Contact with energized circuits can cause property damage, severe personal injury, or death as a result of electrical shock.

mc_062310_0629

Ground wire should be the same AWG (mm2) size as the power wiring or sized per NEC requirements.

PROPER WIRING TO PREVENT ELECTRICAL NOISE

Electrical noise can produce undesirable effects on electronic control circuits, which affects controllability. Electrical noise is generated by electrical equipment such as inductive loads, electric motors, solenoid coils, welding machinery, or ﬂ uorescent light circuits. The electrical noise or interference generated from these sources (and the effect on controllers) is difﬁ cult to deﬁ ne, but the most common symptoms are erratic control or intermittent operational problems.

Important:

• For maximum EMC (electromagnetic compatibility) effectiveness, wire all humidity, high limit, and airﬂ ow controls using multicolored shielded/ screened plenum-rated cable with a drain wire for the shield/screen. Connect the drain wire to the shield/screen ground terminal with wire less than 2" (50 mm) in length.

• Do not ground shield at the device end.

mc_061610_0625-CRUV

FIGURE 12-1: FIELD WIRING REQUIREMENTS

Power

Fused

Control cabinet

Notes:

• Control wiring and power wiring must be run in dedicated or separate earthed metal conduit, cable trays, or trunking.

• Separate the line voltage wiring from low voltage control circuit wiring when routing electrical wiring inside the humidiﬁ er cabinet.

• Do not use chassis or safety grounds as current-carrying commons. Never use a safety ground as a conductor or neutral to return circuit current.

mc_062310_0630-CRUV

disconnect (provided by installer)

OM-7552

supply

(provided

by installer)

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 17

Sensor placement

INSTALLATION

SENSOR LOCATION IS CRITICAL

Sensor location has a signiﬁ cant impact on humidiﬁ er performance. See the recommendations below and Figure 13-1.

Note: DriSteem recommends that you do not interchange room and duct

humidity devices. Room humidity devices are calibrated with zero or little airﬂ ow, whereas duct humidity devices require air passing across them.

Recommended humidity control (transmitter/humidistat) locations:

A Ideal. Ensures the best uniform mix of dry and moist air with stable

temperature control.

B Acceptable, but room environment can affect controllability, such as when

sensor is too close to air grilles, registers, or heat radiation from room lighting.

C Acceptable. Provides uniform mixture of dry and moist air. If extended time

lag exists between humidity generation and sensing, extend sampling time.

D Acceptable (behind wall or partition) for sampling entire room if sensor is near

an air exhaust return outlet. Typical placement for sampling a critical area.

E Not acceptable. These locations might not represent actual overall

conditions in the space.

Other factors affecting humidity control

Humidity control involves more than the controller’s ability to control the system. Other factors that play an important role in overall system control are:

• Size of humidiﬁ cation system relative to load

• Overall system dynamics associated with moisture migration time lags

• Accuracy of humidistats and humidity transmitters and their location

• Dry bulb temperature accuracy in space or duct

• Velocities and airﬂ ow patterns in ducts and space environments

• Electrical noise or interference

mc_072011_1656

F Not acceptable. Do not place sensors near windows, door passageways,

or areas of stagnant airﬂ ow.

Recommended safety (airﬂ ow and high limit) sensor location:

G Best sensing location for high limit humidistat or humidity sensor and airﬂ ow

proving switch.

mc_072011_1655

FIGURE 13-1: RECOMMENDED SENSOR LOCATIONS

Outside air

Relief air

Damper control

Return air

Air handling

unit

Window

Wall or partition

8' to 12'

(2.4 m to 3.7 m)

min.

High limit humidistat or high limit transmitter (set at 90% RH maximum) for VAV applications

Airﬂ ow switch or differential pressure switch (sail type recommended for VAV applications)

Vapor absorption has taken place

Point of vapor absorption

Humidiﬁ er dispersion assembly

Turning vanes

DC-1084M

mc_060508_0750

Doorway

Window

Temperature compensation option: Place a temperature compensation sensor on the lower corner of the inside surface of double-pane window glass on north- or northeast-facing window.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 18

INSTALLATION

Dispersion:

Selecting the dispersion assembly location

DriSteem humidiﬁ ers operate with several types of dispersion assemblies for open spaces and for ducts and air handling units.

Dispersion assemblies in ducts and air handling units must be positioned where the water vapor being discharged is carried off with the airstream and is absorbed before it can cause condensation or dripping.

• Non-wetting distance is the dimension downstream from the leaving side of the steam dispersion assembly to the point where wetting will not occur, although wisps of steam may be present. This distance was calculated during humidiﬁ cation system design and is dependent on several application parameters. To determine your dispersion assembly’s non-wetting distance, consult your system’s design engineer or project documentation. Non-wetting distance can also be calculated using DriSteem’s DriCalc sizing and selection software, available at www. dristeem.com. Note that your current design conditions may vary from conditions used for system design.

• In general, the dispersion assembly is best placed where the air can absorb the moisture being added without causing con den sa tion at or after the unit. This normally will be after the heating coil or where the air tem per a ture is highest.

• Place the dispersion assembly such that absorption will occur

– before the intake of a high efﬁ ciency ﬁ lter, because the ﬁ lter can remove

the visible moisture and become waterlogged; – before coming in contact with any metal surface; – before ﬁ re or smoke detection devices; – before a split in the duct; otherwise, the dispersion assembly can direct

more moisture into one duct than the other.

• When draining dispersion condensate to an open drain, provide a 1" (25 mm) air gap between the condensate drain piping and the drain. Locate the gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam; otherwise, condensation may form on nearby surfaces.

mc_060210_0838

FIGURE 14-1: ULTRA-SORB WITH THE HIGH-EFFICIENCY TUBE OPTION

HIGH-EFFICIENCY TUBE OPTION

Dispersion assemblies with the High-efﬁ ciency Tube option are designed to produce signiﬁ cantly less dispersion-generated condensate and airstream heat gain, which reduces wasted energy by up to 85%. These improvements are accomplished by reducing the thermal conductivity of the tubes with 1/8" of polyvinylidene ﬂ uoride (PVDF) insulating material on the outside of the tubes. These assemblies require careful unpacking, installation, and handling. If your dispersion assembly has the High-efﬁ ciency Tube option, be sure to read this section carefully.

mc_060208_1320

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 19

INSTALLATION

Dispersion:

Drip tee installation

Install a drip tee as shown below when the humidiﬁ er is mounted higher than the dispersion assembly, when interconnecting hose or piping needs to go over an obstruction, or when interconnecting piping runs are long.

Important: Steam hose must be supported to prevent sagging or low spots.

FIGURE 15-1: DRIP TEE INSTALLATION

90° long sweep or two 45° elbows

Obstruction

Insulate tubing and hard pipe to reduce steam loss

Pitch

CRUV humidiﬁ er

DC-7548

WARNING

Hot surface and steam hazard

Dispersion tube, steam hose, tubing, or hard pipe can contain steam, and surfaces can be hot. Discharged steam is not visible. Contact with hot surfaces or air into which steam has been discharged can cause severe personal injury.

mc_060110_1555

To dispersion assembly

6" (150 mm) recommended

8" (200 mm) minimum

1" (25 mm) air gap

Open funnel or ﬂ oor drain. See ﬁ rst note below.

Notes:

• Support steam hose so there are no sags or low spots.

• Dashed lines indicate provided by installer.

mc_062810_0645-CRUV

Tubing or pipe drip tee, by installer. DriSteem part numbers for 304 stainless steel inline tees:

• 1½" (DN40): No. 162710

• 2" (DN50): No. 162712

¾" (DN20)

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 20

INSTALLATION

Dispersion:

• The steam outlet on the humidiﬁ er is sized to the output of the humidiﬁ er. DO NOT use interconnecting piping with an inside diameter smaller than the humidiﬁ er steam outlet.

• See the maximum steam carrying capacities and maximum piping lengths in Table 16-1.

• See the steam loss data in Table 17-1.

Interconnecting piping requirements

Important:

Failure to follow the recommendations in this section can result in excessive back pressure on the humidiﬁ er. This will result in unacceptable humidiﬁ cation system performance such as leaking gaskets, blown water seals, erratic water level control, and spitting condensate from dispersion tubes.

mc_060210_0843

• See Figures 18-1 and 19-1 for interconnecting tubing and pipe pitch requirements for single tube applications. See Table 21-1 for interconnecting tubing and pipe pitch requirements for Rapid-sorb applications.

• If the humidiﬁ er must be located higher than the dispersion assembly, use the recommended installation shown in Figure 15-1.

• For single tube applications, see the capacities in Table 19-1.

Table 16-1: Maximum steam carrying capacity and length of interconnecting steam hose, tubing and pipe*

Steam hose

Hose I.D. Maximum capacity Maximum length

inches DN lbs/hr kg/h ft m inches DN lbs/hr kg/h ft m

1½ 40 150 68 10 3 1½ 40 150 68 20 6.1

Tubing size Maximum capacity

Copper or stainless steel tubing

Maximum developed length

2 50 250 113 10 3 2 50 220 100 30 9.2

1. When using steam hose, use DriSteem steam hose for best results. Field-supplied hose may have shorter life and may cause foaming in the evaporating chamber resulting in condensate discharge at the dispersion assembly. Do not use steam hose for outdoor applications.

2. Maximum recommended length for steam hose is 10' (3 m). Longer distances can cause kinking or low spots.

Note: Capacities and lengths in this table are based on total maximum pressure drop in hose or tubing of 5" wc (1250 Pa)

mc_091410_1050-VM

3. Insulate tubing to minimize loss of capacity and efﬁ ciency.

4. Developed length of tubing equals measured length plus 50% of measured length, to account for ﬁ ttings.

Longer tubing lengths are possible at capacities lower than listed maximums.

Consult factory.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 21

INSTALLATION

Dispersion:

CONNECTING TO DISPERSION ASSEMBLY WITH STEAM HOSE

Interconnecting piping requirements

• Support steam hose to prevent sags or low spots and to maintain a minimum pitch of 2"/ft (15%) back to the humidiﬁ er.

• Use DriSteem steam hose. Other manufacturers of steam hose may use unacceptable release agents or material mixes that can affect humidiﬁ er system performance adversely. Using hose from alternative manufacturers increases the possibility of tank foaming and accelerated aging. Foaming causes condensate discharge at the dispersion assembly.

• Do not use steam hose in outdoor applications.

• Do not insulate steam hose. Insulation causes accelerated heat aging, causing the steam hose to become hard and susceptible to failure due to cracks.

CONNECTING TO DISPERSION ASSEMBLY WITH TUBING

• Support interconnecting piping between the humidiﬁ er steam outlet and the dispersion system with pipe hangers. Failure to properly support the entire steam piping weight may cause damage to the humidiﬁ er tank and void the warranty.

• 90° elbows are not recommended; use two 45° elbows, 1' (0.3 m) apart.

WARNING

Excessive moisture hazard

DriSteem strongly recommends installing a duct airﬂ ow proving switch and a duct high limit humidistat. These devices prevent a humidiﬁ er from making steam when there is low airﬂ ow in the duct or when the RH level in the duct is too high. Failure to install these devices can result in excessive moisture in the duct, which can cause bacteria and mold growth or dripping through the duct.

mc_060310_0725

• Insulate tubing to reduce the loss in output caused by condensation.

mc_060310_1145

Table 17-1: Steam loss of interconnecting steam hose, tubing, and pipe

Nominal hose, tubing or pipe

Description

inches DN lbs/hr/ft kg/h/m lbs/hr/ft kg/h/m inches mm

Hose

Tubing

Pipe

Note: These data are based on an ambient air temperature of 80 °F (27 °C), ﬁ berglass insulation, copper tubing, and Schedule 40 pipe.

mc_051310_1215

size

1½ 40 0.15 0.22 N/A N/A N/A N/A

2 50 0.20 0.30 N/A N/A N/A N/A

1½ 40 0.11 0.164 0.02 0.03 2 50

2 50 0.14 0.21 0.025 0.037 2 50

1½ 40 0.22 0.33 0.02 0.03 2 50

2 50 0.25 0.38 0.025 0.037 2 50

Noninsulated Insulated

Steam loss

Insulation thickness

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 22

INSTALLATION

Dispersion:

FIGURE 18-1: SINGLE DISPERSION TUBE WITHOUT CONDENSATE DRAIN

Steam hose, tubing or pipe. Insulate tubing and hard pipe to reduce steam loss. Do not insulate steam hose. See Table 16-1 for maximum piping lengths.

CRUV humidiﬁ er

* Pitch steam hose, tubing, or pipe toward humidiﬁ er: – 2"/ft (15%) when using steam hose – ½"/ft (5%) when using 1½" tubing or pipe – ¼"/ft (2%) when using 2" tubing or pipe

mc_062810_0720-CRUV

Single tube

Single dispersion tube without condensate drain

Pitch*

Secure and seal escutcheon plates

90° long sweep or two 45° elbows

See ﬁ rst bullet in Installation notes

OM-7554

Dashed lines indicate provided by installer.

Duct

Dispersion tube escutcheon plate

OM-7554

Mounting nut 3/8"–16 (M10)

Tube pitch: 2"/ft (15%)

Dimension A:

• 3.25" (82.5 mm) for 1½" tubes

• 5" (127 mm) for 2" tubes

INSTALLATION NOTES

• Use DriSteem’s hard pipe adapter kit to connect the steam outlet to hard pipe. Use a hose clamp to connect the steam outlet to steam hose. Use a hose cuff and clamps to connect the steam outlet to tubing.

• Thin-walled tubing heats up faster than heavy-walled pipe causing less steam loss at start-up.

• Hard pipe or tubing diameter must match Vapormist steam outlet size 1½" (DN40), 2" (DN50), or NPT connection.

• See the Maximum Steam Carrying Capacity and Steam Loss tables on Pages 16 and 17.

• Orient dispersion tube with tubelets (steam oriﬁ ces) pointing up.

• If mounting the humidiﬁ er above the level of dispersion tube, see “Drip tee installation” on Page 15.

• Table 18-1 lists hose kit sizes by humidiﬁ er model. Note that the capacities of Models 30 and 34 require multiple tube assemblies and cannot use a hose kit. For multiple tube assemblies, see “Rapid-sorb,” beginning on Page 20.

mc_062810_1030-NA

WARNING

Hot surface and steam hazard

mc_060110_1555

Important:

mc_060210_0843

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 23

INSTALLATION

Dispersion:

FIGURE 19-1: SINGLE DISPERSION TUBE WITH CONDENSATE DRAIN

Steam hose, tubing or pipe. Insulate tubing and hard pipe to reduce steam loss. Do not insulate steam hose. See Table 16-1 for maximum piping lengths.

90° long sweep or two 45° elbows

See ﬁ rst bullet in Installation notes

CRUV humidiﬁ er

* Pitch steam hose, tubing, or pipe toward humidiﬁ er: – 2"/ft (15%) when using steam hose – ½"/ft (5%) when using 1½" tubing or pipe – ¼"/ft (2%) when using 2" tubing or pipe

Dashed lines indicate provided by installer.

mc_062810_0725-CRUV

Single tube

OM-7549

Secure and seal escutcheon plates

Pitch*

6" (150 mm)

recommended

Water seal

5" (125 mm)

1" (25 mm) air gap

OM-351-1

Duct

¼" NPT (DN8)

¾" (DN20) (minimum) condensate drain tube by installer. Must be suitable for 212 °F (100 °C) water.

Open drain required. Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam; otherwise, condensation may form on nearby surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.

Escutcheon plates

Dispersion tube

Dimension A:

• 3.25" (82.5 mm) for 1½" tubes

• 5" (127 mm) for 2" tubes

Single dispersion tube without condensate drain

Mounting nut 3/8" - 16 (M10)

Pitch tube toward drain 1/8"/ft (1%)

½" O.D. (DN15) condensate drain tube. Pitch ¼”/ft (2%) toward escutcheon plate.

Condensate drain

3.25" (82.5 mm)

Table 19-1: Single dispersion tube capacities*

Insulated

Tube size

inches DN lbs/hr kg/h lbs/hr kg/h lbs/hr kg/h lbs/hr kg/h

1½ 40 29 13.2 65 29.5 28 12.7 62 28.2

2 50 65 29.5 97 44.1 62 28.2 93 42.3

Note: Single dispersion tube available with face width between 6" (152 mm) up to 120" (3048 mm)

in 1" (25 mm) increments.

* If face width is <19" (483 mm), tube capacity may be reduced. Consult DriSteem or see

DriCalc for the correct capacity.

* Hose kits are available that include dispersion tube, 10 ft (3 m) of steam hose, and hardware

(High-Efﬁ ciency Tubes)

Without drain With drain Without drain With drain

Uninsulated

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 24

INSTALLATION

Dispersion: Rapid-sorb

Read all dispersion instructions in this manual, and follow the installation instructions below:

WARNING

• Unpack shipment and verify receipt of all Rapid-sorb components with packing list. Report any shortages to DriSteem immediately. The components typically include the following:

– Multiple dispersion tubes – Header – ¾" × 2" (19 mm × 51 mm) L-bracket Note: Dispersion tubes, header, and L-bracket are each tagged with the

customer requested identiﬁ cation number. – A single duct escutcheon plate the size of the header – Slip couplings or hose cuffs and clamps – Accessories such as duct plates, slip couplings, or hose cuffs – Bolts and washers for mounting the dispersion tubes to the bracket

• L-bracket mounting holes (see note at left):

– L-bracket 50" (1270 mm) long or shorter has a mounting hole 4"

(100 mm) from each end for mounting the L-bracket to the duct or air handler wall.

– L-bracket longer than 50" (1270 mm) has an additional mounting hole

in the center.

Note: Hardware for mounting the L-bracket to the duct or air handler

wall and the hardware for the header support bracket is not

provided.

• Select an installation location that provides necessary access in and around the ductwork or air handler.

• The Rapid-sorb typically is installed centered side to side in a duct, or is installed across the face of a coil in an air handler.

Hot surface and steam hazard

mc_060110_1555

Important:

Before marking and drilling holes in the duct or air handler, refer to ALL pitch re quire ments for the Rapid-sorb as sem bly you received (see Table 21-1). The size, quan ti ty, and location of penetrations are determined by the dimensions and conﬁ guration of the Rapid-sorb assembly you received.

mc_060210_0937

Important:

mc_060210_0843

• The center line of the outer dispersion tubes should never be closer than

4.5" (114 mm) from the side of the ductwork or air handler wall.

• The following instructions are for a typical Rapid-sorb installation — horizontal-airﬂ ow duct with Rapid-sorb header either inside or outside the duct. See the DriCalc Installation Guides library or contact your representative/distributor or DriSteem for installation instructions for air handler or vertical airﬂ ow applications.

mc_060210_0945-NA

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 25

Dispersion: Rapid-sorb

PITCH REQUIREMENTS

• For Rapid-sorb with the header outside a horizontal-airﬂ ow duct, consider the following:

– 1½" (DN40) dispersion tubes: Use a fastener of sufﬁ cient length to

ac com mo date the 1/8"/ft (1%) pitch requirements toward the ¾" pipe thread (DN20) header drain ﬁ tting.

– 2" (DN50) dispersion tubes: The bracket can be mounted ﬂ ush to the

ductwork. The 1/8"/ft (1%) pitch typically can be accomplished in the length of the hose cuffs used to connect the tubes to the header.

• See Table 21-3 and the drawings on the following pages for pitch requirements.

mc_060210_0953-NA

INSTALLATION

Table 21-1: Rapid-sorb tube capacities*

Tube

diameter

inches DN lbs/hr kg/h lbs/hr kg/h

1½ 40 43 19.5 40 18.2

2 50 80 36.4 77 35

Note: * Capacities shown are for horizontal airﬂ ow. See DriCalc for vertical

airﬂ ow capacities. If face height is <22” (559 mm), tube quantity per panel may need to increase to compensate for reduced capacity of short tubes. Consult DriSteem or see DriCalc for the correct calculation.

Insulated

(High- Efﬁ ciency Tubes)

Uninsulated

Table 21-2: Rapid-sorb header capacities

Header capacity Header diameter

lbs/hr kg/h inches DN

≤ 250 ≤ 113 2 50

251-500 114-227 3 80

501-800 228-363 4 100

801-1300 364-591 5 125

1301-2100 592-955 6 150

mc_060210_0936

Table 21-3: Pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb evaporative dispersion units

Airﬂ ow

Horizontal

Type of

interconnecting piping

Steam hose

Tubing or pipe

Diameter of

interconnecting piping

1½" (DN40)

2" (DN50)

1½" (DN40)

2" (DN50)

Pitch of

interconnecting piping

2"/ft (15%)

toward Rapid-sorb

1/8"/ft (1%)

toward Rapid-sorb

Pitch of

dispersion tubes

Vertically plumb

Pitch of header

1/8"/ft (1%)

toward condensate

drain

Steam hose

Vertical

Tubing or pipe

mc_060310_1000

1½" (DN40)

2" (DN50)

1½" (DN40)

2" (DN50)

2"/ft (15%)

toward Rapid-sorb

1/8"/ft (1%)

toward Rapid-sorb

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

2"/ft (15%)

toward header

1/8"/ft (1%)

toward condensate

drain

Page 26

INSTALLATION

Dispersion: Rapid-sorb

FIGURE 22-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER OUTSIDE THE DUCT

Position L-bracket so that ﬂ ange is upstream of dispersion tubes. Drawing shows L-bracket positioned for airﬂ ow back to front.

L-bracket

Dispersion tube

Point tubelets perpendicular to airﬂ ow

90° long sweep or two 45° elbows

Steam hose, tubing or pipe. Insulate tubing and hard pipe to reduce steam loss. Do not insulate steam hose. See Table 16-1 for maximum piping lengths.

Notes: 1 Pitch steam hose, tubing, or pipe toward Rapid-sorb:

– 2"/ft (15%) when using steam hose – 1/8"/ft (1%) when using tubing or pipe

2 Use DriSteem’s hard pipe adapter kit to connect steam outlet to hard

pipe. Use a hose clamp to connect steam outlet to steam hose. Use a hose cuff and clamps to connect steam outlet to tubing.

mc_062810_0815-CRUV

Slip coupling or hose cuff

Pitch

(see Note 1)

Header pitch: 1/8"/ft (1%) min.

OM-7550

CRUV humidiﬁ er

¾" pipe thread (DN20) copper

Airﬂ ow

Duct

Secure and seal escutcheon plates

Support bracket that has 0.421" (11 mm) mounting holes at top, bottom and end

Condensate drain

1" (25 mm) air gap

Dispersion tube escutcheon plates

OM-351-1

Dimension A:

• 3.25" (82.5 mm) for 1½" tubes

• 5" (127 mm) for 2" tubes

6" (150 mm) recommended

5" (125 mm) recommended

HEADER OUTSIDE OF DUCT, HORIZONTAL AIRFLOW

1. Mark and cut holes in the ductwork for the dispersion tubes. Use the L-bracket as a tem plate to mark the holes on the duct floor.

2. Temporarily, loosely suspend or support the header below the final location. Vertical balance point of the dispersion tube length dictates where the header should be suspended or temporarily supported.

3. Mount the dispersion tubes to the header with the slip coupling or hose cuff (provided).

• When installing slip couplings for 1½" (DN40) dispersion tubes, take

care not to shear the O-rings.

• Set the slip coupling on the header stub or dis per sion tube so the O-ring

is resting on the face of the tubing.

• Rotate the slip coupling as you push it onto the tubing.

• The O-rings are lubricated at the factory. If additional lubrication is

necessary, DO NOT use a petroleum-based lubricant.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

WARNING

Hot surface and steam hazard

mc_060110_1555

Page 27

Dispersion: Rapid-sorb

INSTALLATION

4. Position the flange of the L-bracket so it is upstream of the tubes when the assembly is raised and fastened into po si tion. Fasten the L-bracket to the end of the dispersion tubes with the provided bolt, lock washer, and flat washer.

5. Before tightening the L-bracket bolts to the dispersion tubes:

• For 1½" (DN40) dis per sion tubes:

– Dispersion tube will rotate in slip coupling. Verify that dispersion tube

oriﬁ ces are directed perpendicular to airﬂ ow.

– Dispersion tube and slip coupling must be fully engaged on header

stub for O-rings to provide a seal.

• For 2" (DN50) dispersion tubes: Before securing hose cuff in place with hose clamps on dis per sion tube

and the header stub, verify that dis per sion tube oriﬁ ces are directed perpendicular to airﬂ ow.

6. Slide the assembly up until the L-bracket aligns with the mount ing holes in the duct.

• For 1½" (DN40) dispersion tubes:

– Header pitch is duplicated in the L-bracket. – Dispersion tube and slip coupling must be fully engaged on header

stub for O-rings to provide a seal. – High end of L-bracket can be fastened tight to duct or air handler. – Fastener on low end of L-bracket must be long enough to compensate

for pitch. Use a nut on both sides of L-bracket and duct or air handler

for stability.

• For 2" (DN50) dis per sion tubes: – Fasten bracket to top of duct and use hose cuffs to compensate for

header pitch.

– Before securing hose cuffs with hose clamps on dispersion tube and

header stub, verify that header pitch, 1/8"/ft (1%) toward drain, is maintained.

Note: See Page 26 for steam supply and condensate drain line connection instructions.

7. Permanently secure both ends of header, and verify that header pitch, 1/8"/ft (1%) toward drain, is maintained.

8. Verify that all fasteners are secure:

• L-bracket to duct

• Dispersion tubes to L-bracket

• Hose clamps on 2" (DN50) tubes

9. Secure and seal the dispersion tube escutcheon plate and condensate drain tube escutcheon plate around the respective tubes, if applicable.

mc_060210_1015-NA

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 28

INSTALLATION

Dispersion: Rapid-sorb

FIGURE 24-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER INSIDE THE DUCT

Position L-bracket so that ﬂ ange is upstream of dispersion tubes. This drawing shows the L-bracket positioned for airﬂ ow back to front

Dispersion tube

Point tubelets (steam oriﬁ ces) perpendicular to airﬂ ow

Airﬂ ow

90° long sweep or two 45° elbows

Steam hose, tubing or pipe. Insulate tubing and hard pipe to reduce steam loss. Do not insulate steam hose. See Table 16-1 for maximum piping lengths.

* Pitch steam hose, tubing, or pipe toward Rapid-sorb:

– 2"/ft (15%) when using steam hose – 1/8"/ft (1%) when using tubing or pipe

mc_062810_0820-CRUV

HEADER INSIDE OF DUCT, HORIZONTAL AIRFLOW

Slip coupling or hose cuff

Pitch*

Secure and seal escutcheon plate

OM-7551

CRUV humidiﬁ er

Pitch header toward drain 1/8"/ft (1%)

¾" pipe thread (DN20) drain

¾" (DN20) copper

1" (25 mm) air gap

Open drain required. Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam, or condensing on nearby surfaces may occur. Refer to governing codes for drain pipe size and maximum discharge water temperature.

1. Mark and cut holes in ductwork or air handler for steam header pen e tra tion, con den sate drain piping, and head er support bracket fastener. Allow 1/8"/ft (1%) header pitch toward the support bracket when you drill the hole for the header support bracket fastener.

2. Loosely fasten the header in place.

3. Rotate the header 90° so the header stubs point hor i zon tal ly in the duct.

4. When installing in an air handler, the rotation of the header is often less than 90°. Typically, due to the condensate drain piping re quire ments, the header can be set on the floor of the air handler, assembled in the vertical position, and then raised and mounted in place.

Duct

Support bracket

6" (152 mm)

5" (127 mm)

WARNING

Hot surface and steam hazard

mc_060110_1555

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 29

Dispersion: Rapid-sorb

INSTALLATION

5. Mount the dispersion tubes on the header with the slip couplings or hose cuffs:

• When installing slip couplings for 1½" (DN40) dispersion tubes, take

care not to shear O-rings.

• Set slip coupling on header stub or dis per sion tube so O-ring is resting

on face of tubing.

• Rotate slip coupling while pushing it onto the tubing.

• O-rings are lubricated at factory. If additional lubrication is necessary,

DO NOT use petroleum-based lubricant.

6. Allow the dispersion tubes to rest against the bottom of the duct.

7. Position the flange of the L-bracket so it is upstream of the tubes when the assembly is rotated into position. Fasten the L-bracket to the end of the dispersion tubes with the provided bolt, lock washer, and flat washer.

8. Rotate the assembly up until the L-bracket aligns with the mounting holes in the duct or air handler.

• For 1½" (DN40) dispersion tubes:

– Header pitch is duplicated in the L-bracket. – Dispersion tube and slip coupling must be fully engaged on header

stub for O-rings to provide a seal. – High end of L-bracket can be fastened tight to duct or air handler. – Fastener on low end of L-bracket must be long enough to compensate

for pitch. Use a nut on both sides of L-bracket and duct or air handler

for stability.

• 2" (DN50) dispersion tubes – Fasten bracket to top of duct and use hose cuffs to compensate for

header pitch.

– Before securing hose cuffs with hose clamps on dispersion tube

and header stub, verify that dispersion tube oriﬁ ces are directed perpendicular to airﬂ ow.

Note: See Page 26 for steam supply and condensate drain line connection instructions.

9. Verify that all fasteners are secure:

• L-bracket to duct

• Dispersion tubes to L-bracket

• Hose clamps on 2" (DN50) tubes

• Header support bracket fastener

10. Secure and seal the header escutcheon plate around the header.

mc_060210_1050 -NA

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 30

INSTALLATION

Dispersion: Rapid-sorb

STEAM SUPPLY CONNECTIONS TO RAPID-SORB HEADER

Connect the steam supply interconnecting piping from the humidiﬁ er to the Rapid-sorb. The steam supply piping requires a minimum of 1/8"/ft (1%) pitch toward the header.

If multiple humidiﬁ ers are supplying one Rapid-sorb, a multiple steam supply connector is needed. Typically, the multiple steam supply connector attaches to the Rapid-sorb header supply end with hose cuff and clamps:

1. Route the necessary number of steam supplies from the humidifiers to the steam supply connector.

2. Position the steam supply connector to accept the steam supplies while maintaining the necessary pitch.

3. Make sure the hose clamps on the steam supply connector and header are tight.

CAUTION

Operate Rapid-sorb within rated steam capacity

Excessive steam ﬂ ow to the Rapid-sorb steam dispersion assembly can cause condensate to exit the tubelets, which can cause water damage and standing water in the duct or air handler.

To avoid condensate exiting the tubelets, do not operate the Rapid-sorb beyond its rated capacity.

mc_072010_0930

CONDENSATE DRAIN CONNECTIONS TO RAPID-SORB HEADER

Piping must be minimum ¾" I.D. (DN20) and rated for 212 °F (100 °C) minimum continuous operating temperature.

The condensate drain line must be piped as shown in Figures 8-1 and 8-1. Provide a 6" (152 mm) drop prior to a 5" (127 mm) water seal to:

• Ensure drainage of condensate from the header

• Keep steam from blowing out of the drain line

After the water seal, run the drain line to an open drain with a 1" (25 mm) vertical air gap.

• Cut the drain line at a 45° angle on the end above the drain to permit a direct stream of water into the drain pipe while maintaining a 1" (25 mm) air gap.

• Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam, or condensing on nearby surfaces may occur.

All drain lines must be installed and sized according to governing codes.

ULTRA-SORB

For Ultra-sorb steam dispersion panel instructions, see the installation, operation, and maintenance manual shipped with the Ultra-sorb.

mc_060210_1300-NA

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 31

Start-up procedure

The CRUV humidiﬁ er is available with either the LW series controller or the optional Vapor-logic control system. If your system is equipped with the Vapor-logic system, refer also to the Vapor-logic Installation and Operation Manual as noted in the instructions below.

After the system is installed and connected properly:

1. Verify that the humidifier, controls, piping, electrical connections, steam supply, and dispersion units(s) are installed according to the following:

• Installation instructions in this manual

• Vapor-logic Installation and Operation Manual (if using the Vapor-logic

control option): – Installation section – Pre-installation checklist

• Wiring diagrams shipped with humidiﬁ er

• All governing codes

OPERATION

WARNING

Electric shock hazard

Only qualiﬁ ed electrical personnel should perform start-up procedure.

Contact with energized circuits can cause property damage, severe personal injury or death as a result of electrical shock or ﬁ re.

Make sure that all electrical covers are in place and secure before turning on electrical power. These include the heater terminal cover, electrical panel cover, and subpanel access panels.

2. Confirm that proper grounding and an approved earth ground are provided.

3. Verify that all electrical connections are secure before applying power.

4. Make sure all electrical covers are in place and secure. See Warning at right.

5. Verify that the humidifier is mounted level and securely supported before filling with water (see the operating weights in Table 4-1).

6. Verify that the humidifier is level front to back and side to side after it is full of water.

7. Refer to “LW series controller” on Page 28 or the “Operation” section of the Vapor-logic Installation and Operation Manual.

8. Perform all applicable “Start-up checklist” items on Page 28 or 29. Note: During start-up, do not leave the humidiﬁ er unattended.

9. Monitor humidifier operation through multiple fill cycles.

10. On tap/softened water units, water skims from the humidifier after every fill cycle. Adjust the amount of skim by increasing or decreasing the skim time. See "Skim duration" on Page 33.

At start-up, DriSteem recommends initially running the humidiﬁ er with the

factory default setting for skim time.

CAUTION

Damage from dry startup

In the event the humidiﬁ er tank does not contain water and the heaters are energized, turn main power off. Operation of the heaters without water will cause damage to the humidiﬁ er. Before turning main power on, verify that all wiring has been completed per the wiring instructions in this manual and the unit wiring diagrams.

mc_052410_1325

Continue reading this section before proceeding to “Maintenance” beginning on Page 34.

mc_060210_1400-CRUV

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 32

OPERATION

Start-up checklist:

TAP/SOFTENED WATER

☐ Adjust humidistat setting to create a call for humidity.

☐ Open shut-off valve on water supply line, and conﬁ rm that drain valve is

closed. Tank should begin ﬁ lling with water through ﬁ ll valve.

☐ Shortly before ﬁ ll valve shuts off, rising water level causes water to come

in contact with the bottom probe, and heating element contactor(s) will be actuated.

☐ Check heater cut-off circuit as follows:

1. Close manual water supply valve, then open drain valve and start draining tank.

2. When water level drops below bottom probe, the heating element contactor(s) drop out.

3. When Step 2 above has completed, close drain valve.

☐ Check function of ﬁ eld-installed safety controls, such as fan proving switch.

Contactor(s) should drop out when proving switch is open.

☐ Check heater draw by testing and recording voltage and amperage in each

phase. Readings should match humidiﬁ er name plate readings (name plate is on humidiﬁ er housing).

LW series controller

☐ Inspect installation for steam or air leaks while operating humidiﬁ er. Seal

any leaks.

RO/DI WATER OPTION

☐ Adjust humidistat setting to create a call for humidity.

☐ Open shut-off valve on water supply line, and conﬁ rm that drain valve is

closed. Tank should begin ﬁ lling with water through ﬁ ll valve.

☐ Shortly before ﬁ ll valve shuts off, ﬂ oat-operated heater cut-off switch will

“make,” and heating element contactor(s) will be actuated. A time delay relay circuit prevents contactor chatter that would otherwise occur due to bouncing of heater cut-off ﬂ oat.

☐ Check heater cut-off circuit as follows:

1. Close manual water supply valve, then open drain valve and start draining tank.

2. When water level drops past switching level on heater cut-off ﬂ oat, the heating element contactor(s) drop out.

3. When Step 2 above has completed, close drain valve.

☐ Check function of ﬁ eld-installed safety controls, such as fan proving switch.

Contactor(s) should drop out when proving switch is open.

☐ Check heater draw by testing and recording voltage and amperage in each

phase. Readings should match humidiﬁ er name plate readings (name plate is on humidiﬁ er housing).

☐ Inspect installation for steam or air leaks while operating humidiﬁ er. Seal

any leaks.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 33

OPERATION

Start-up checklist:

If an item in the Start-up checklist below does not apply to your system, skip to the next item and continue the process.

☐ Read this manual and all other information that was provided with your

humidiﬁ er.

☐ Verify that all ﬁ eld wiring is done according to the instructions in this

manual and in the humidiﬁ er wiring diagram.

☐ Conﬁ rm that the input signal is consistent with the Vapor-logic controller's

expected input signal. Input signals are listed in the Vapor-logic Setup menu. See “Installation Step 2: Setup” in the Vapor-logic Installation and

Operation Manual.

☐ Turn on the water supply, and conﬁ rm that the drain valve is closed.

☐ Turn on power to the humidiﬁ er, and conﬁ rm the Main menu is displayed

on the keypad/display. The display may take several seconds to appear as the controller powers up.

☐ Conﬁ rm in the Main Menu that the mode is “Auto” and that tank status is

“Filling.”

☐ When “Filling” appears in main menu, conﬁ rm that the tank is ﬁ lling with

water.

Vapor-logic controller

☐ In the Status screen, conﬁ rm that the Duct Airﬂ ow Switch is closed.

☐ In the Status screen, conﬁ rm that the high limit humidistat input is closed or

the high limit transmitter is connected.

☐ Make sure the tank has ﬁ lled with water. See the “Damage from dry

startup” Caution on Page 27.

☐ With sufﬁ cient water in the tank, the airﬂ ow switch closed, the high limit

closed, and the humidiﬁ er getting a call for humidity, verify that the heater outputs are activated.

☐ Check the amp draw of the heaters. Refer to the humidiﬁ er wiring diagram

for the proper rating.

☐ If you experience difﬁ culties, have the keypad/display information

available along with the serial number and humidiﬁ er Model, and call DriSteem Technical Support at 800-328-4447.

mc_060210_1355-CRUV

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 34

OPERATION

Start-up and operation:

LW series controller

The LW series controller is a custom microprocessor-based water level controller for DriSteem humidiﬁ ers. The features of this controller are:

• Water level control

• Automatic drain and ﬂ ush

• Variable skim times

• End-of-season drain

• Onboard diagnostics: Ready water, Full, and Drain LEDs to assist

troubleshooting

When power is activated, the solenoid-operated water ﬁ ll valve opens, ﬁ lling the evaporating chamber until the water level reaches the top probe (see Figure 3-1), then the ﬁ ll valve closes.

To ensure that a water seal is created in the ﬁ eld-installed water seal:

1. Disconnect probe plug and cable from probe rod assembly (located on top

of the tank), allowing fill valve to energize and tank to fill.

2. Let fill water overfill humidifier tank and flow out of skim/overflow port for

several seconds to fill the water seal in the drain line.

Important:

Timer logic input wire (see Figure 32-1) must be connected per wiring diagram for proper automatic drain/ﬂ ush and end-of-season drain operation. Power light blinks off twice at one-second intervals when these functions are disabled. Verify wiring with diagram supplied with humidiﬁ er.

3. Reconnect probe plug and cable. Create a call for humidify to ensure fill

valve opens.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 35

Start-up and operation: LW series controller

OPERATION

AUTOMATIC DRAIN AND FLUSH (TAP/SOFTENED WATER)

The LW series controller employs an electronic timer that tracks the humidifying time of the unit. The controller activates a drain/ﬂ ush cycle when a predetermined humidifying time has elapsed (factory default is 40 hours), and the following sequence occurs:

1. Drain valve opens, draining mineral laden water from tank.

2. Draining continues until a predetermined time has elapsed (factory default is 10 minutes).

3. Flushing occurs during the last 10% of drain period.

TEST CYCLING DRAIN/FLUSH (TAP/SOFTENED WATER)

The dip switches on the control board can be used to test the drain/ﬂ ush cycle as follows:

1. Slide dip switches 1, 2, and 3 to OFF position, which is self test mode.

2. Set humidistat high, so call for humidity remains for at

Table 31-1: Autodrain settings

least 15 minutes. The following sequence occurs: a) Drain valve opens after about two minutes, and

water level drops.

b) When water level drops below middle probe (see

Figure 3-1), ﬁ ll valve opens.

c) Fill valve and drain valve remain open for drain/

ﬂ ush period, then drain valve closes.

d) Water level rises to top probe, and ﬁ ll valve closes.

3. When drain/flush test cycle is complete, return dip

Self test Off Off Off 10 min. 2 min.

Disabled On Off Off - -

Option Off On Off 10 min. 20 hours

Option On On Off 30 min. 20 hours

Factory settings

Option On Off On 30 min. 40 hours

Option Off On On 10 min. 80 hours

Option On On On 30 min. 80 hours

123

Off Off On 10 min. 40 hours

switches 1, 2, and 3 to desired operating mode (see Table 31-1). Failure to do so will result in a drain/flush cycle every two minutes.

End-of-season drain

The end-of-season drain option drains the tank after 72 hours of no call for humidity to minimize microbial growth inside the humidiﬁ er. When there is a call for humidity, the tank ﬁ lls and the unit runs when the operating level is reached.

LW series controller dip switches

Drain/ﬂ ush intervals of 20 hours and 80 hours are available (factory default is 40 hours) and can be set via dip switches on the control board (see Figure 32-1). See the wiring diagram(s) attached to the unit for board location and instructions for changing the dip switch settings, and see Table 31-1.

Switch

Drain time

Interval

time

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 36

OPERATION

Start-up and operation: LW series controller

ONBOARD DIAGNOSTICS (TAP/SOFTENED WATER)

When the green Power light blinks on for one second and then is off for one second, enough scale has accumulated on the probes to begin to compromise the quality of the water level detection. Remove the probe assembly and brush off all scale and tarnish. See "Troubleshooting" on Pages 40 and 41 for any water level control issues.

VAPOR-LOGIC CONTROLLER

The Vapor-logic In stal la tion and Op er a tion Man u al is a comprehensive operation manual. Refer to it for information regarding the following features:

• Keypad/display setup and menu information

• Control input signals and functions

• Drain, ﬂ ush, and skim features

• Safety features

• Alarm screens and fault messages

The manual is shipped with CRUV humidiﬁ ers equipped with the optional Vapor-logic controller. It is also available at our Web site: www.dristeem.com

Variable skim times (tap/softened water)

The skim time feature removes surface solids and foam from the water. This keeps the ﬁ ll valve open for a certain amount of time after the water reaches the top probe (see Figure 3-1). The skim time is factory set for 32 seconds but can be changed in the ﬁ eld for locations with water that requires more skimming. See “Skim duration” on Page 33. See LW series controller board location in Figure 44-1.

Important:

FIGURE 32-1: LW SERIES CONTROLLER BOARD

Ready water light

Bottom water probe input (violet)

Middle water probe input (orange)

v O BR BL T R G W B

Top water probe input (brown)

Ready water output (blue)

Fill valve output (tan)

Timer logic input (red)

Drain valve output (gray)

24 VAC common input (white)

24 VAC hot input (black)

Ground mounting holes, 3/16" diameter

Power light

Drain light

Dip switch settings

1 2 3 4 5 6 7 8

DRAIN

TIME

SKIM

TIME

Full light

EOS

TEST

TIMER

LOGIC

OM-918

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 37

Tap/softened water

The best way to determine how often your humidiﬁ er needs maintenance is to remove the tank cover and inspect it for mineral deposits after three months of duty. Hours of operation and duty cycle will determine your maintenance schedule, as will water quality.

WATER QUALITY AND MAINTENANCE

Maintenance requirements vary with water quality, because tap and softened water carry a variety of minerals and other materials in a mix that varies from location to location. Very hard (high mineral content) water requires more frequent cleaning and drain/ﬂ ush cycles than water with low mineral content.

Softened water signiﬁ cantly reduces mineral accumulation inside the humidiﬁ er.

Note: Solids, like silica, are not removed in the softening process.

SKIM DURATION

Skim duration determines the quantity of water skimmed with each ﬁ ll cycle and is ﬁ eld adjustable:

• LW series controller, dip switches on controller board (see Table 33-1)

• Optional Vapor-logic controller, keypad/display or web interface (see the Vapor-logic Installation and Operation Manual)

MAINTENANCE

WARNING

Electric shock hazard

Contact with energized circuits can cause severe personal injury or death as a result of electric shock. To prevent shock, disconnect electrical power before performing service or maintenance procedures on an part of the humidiﬁ cation system.

When performing maintenance on the humidiﬁ er:

• If the humidiﬁ er is equipped with a Vapor-logic controller, use the keypad to change the control mode to Standby.

• Place all power disconnects in OFF position and lock in OFF position.

• Close the ﬁ eld-installed manual supply water shut-off valve.

mc_031110_0444-CRUV

Skimming reduces the need for frequent humidiﬁ er cleaning. Each time the tank reﬁ lls, it ﬁ lls to a level just above the lip of the skim/overﬂ ow ﬁ tting. A portion of the ﬁ ll water ﬂ ows out of the skim/overﬂ ow ﬁ tting to the drain, which ﬂ ushes minerals left by the previous evaporating cycle and skims away surface residue.

Both humidiﬁ er cleaning and heated water ﬂ owing to the drain are operational costs. DriSteem recommends that the user observe and adjust the skim duration to achieve a balance between reducing mineral buildup and conserving heated water.

mc_060210_1430-CRUV

Table 33-1: Skim time settings

Dip switch

Option Off Off 3 seconds

Option On Off 9 seconds

Factory settings

Option On On 45 seconds

Off On 32 seconds

Skim time

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 38

MAINTENANCE

Tap/softened water

Before performing service or maintenance procedures and before shutting off electrical power, cool down the humidiﬁ er according to the instructions below for your controller type. Insulated and uninsulated tanks will have hot sur fac es.

Note: Fresh make-up water is used to speed up cooling. Do not close the

manual water supply before cooling down the humidiﬁ er; otherwise the tank could stay hot for several hours.

COOL DOWN HUMIDIFIER (LW SERIES CONTROLLER)

1. Manually open the drain valve by moving the valve lever located on the back of the drain valve to the manual open position. The fill valve will open after enough water has drained out of the tank.

2. Let the fill water run until the tank is cooled; then shut off the field-installed manual supply water shut-off valve.

3. Let the tank drain; then manually close the drain valve.

COOL DOWN HUMIDIFIER (VAPOR-LOGIC CONTROLLER)

• Verify that there is no call for humidity and that the aquastat set point (adjusted using the keypad/display Setup screens) is less than room temperature (default setting is 40 °F [4 °C]) so that the heaters do not energize while cooling down the tank.

• Models with a standard drain valve:

– Manually open the drain valve by moving the valve lever located on

the back of the drain valve to the manual open position. The ﬁ ll valve eventually opens.

– Let the ﬁ ll water run until the tank is cooled, then shut off the ﬁ eld-

installed manual supply water shut-off valve.

– Let the tank drain, then manually close the drain valve.

• Models with optional drain valves:

Shut down humidifier

Follow the procedure below before performing service or maintenance procedures (after the tank has cooled down and drained):

• If the humidiﬁ er is equipped with a Vaporlogic controller, use the keypad to change the control mode to Standby.

• Shut off all electrical power to the humidiﬁ er using the ﬁ eld-installed fused disconnect, and lock all power disconnect switches in the OFF position.

• Close the ﬁ eld-installed manual water supply shut-off valve.

WARNING

Hot surface and hot water hazard

Do not touch the tank or drain piping until the unit has had sufﬁ cient time to cool, or serious injury can occur.

Opening the drain valve when the tank is hot can discharge water with a temperature up to 212 °F (100 °C) into the plumbing system. This can cause damage to the plumbing system if the humidiﬁ er is not properly connected to a water tempering device such as a DriSteem Drane-kooler

mc_060110_1640

™

– For drain valves without the manual open lever, use the keypad to

perform the cool down process. – Go to the control modes screen and select Manual Drain. – Allow approximately half the water to drain out of the tank. – In the Control Modes screen select Auto; the ﬁ ll valve opens and the

humidiﬁ er cools down. – When the ﬁ ll valve closes, select Manual Drain in the Control Modes

screen and let the tank drain dry. The humidiﬁ er should be cool enough

to work on. – For more information about using the keypad, see the Vapor-logic

Installation and Operation Manual.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 39

Tap/softened water

INSPECTION AND MAINTENANCE

1. Annually (also recommended when maintenance is performed)

• Inspect tank and gaskets for leaks.

• Measure current draw of heaters and verify amp values per stage by comparing to the wiring diagram located inside the subpanel cover. This identiﬁ es any burned out heaters. Only qualiﬁ ed electrical personnel should perform this task.

• All safety devices in the control circuit should be cycled on and off to verify they are functioning. These include:

– High limit switch – Airﬂ ow proving switch – Low water level probe. Pull out probe plug; ﬁ ll valve should energize.

2. Seasonally (or as required, depending on water quality) Clean the evaporating chamber:

MAINTENANCE

WARNING

Electric shock hazard

Do not remove humidiﬁ er electrical panel cover, heater terminal cover, or subpanel access panels until electrical power is disconnected. Improper wiring or contact with energized circuits can cause property damage, severe personal injury, or death as a result of electric shock and/or ﬁ re.

Only qualiﬁ ed electrical personnel should perform maintenance procedures.

mc_060310_0840

• If the tank is hot, cool it down ﬁ rst. See “Cool down humidiﬁ er” on previous page.

• Shut off the water supply.

• Allow the tank to drain completely.

• Shut off the electrical supply.

• Disconnect the ﬁ ll line at the supply side of the ﬁ ll valve.

• Disconnect the electrical plugs between the tank components and the back of the electrical panel (includes: power plug, ﬁ ll plug, drain plug, water level control plug, tank temperature sensor plug, and thermal trip plug).

Important: Disconnect by pulling on plug housing. Do not disconnect

by pulling on cord or wires. – Disconnect the drain union on the back left corner of the frame. – Disconnect the steam supply hose from the top of the tank. – Lift the tank foot above the frame ﬂ ange, and slide the tank assembly

forward to remove.

• Loosen the four cover bolts and remove the cover assembly from the tank.

• Clean the tank interior using a putty knife or similar ﬂ at instrument.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 40

MAINTENANCE

Tap/softened water

• Clean and inspect probe rod assembly: – Unplug the probe plug assembly, and leave ground wire connected

to tank.

– Unscrew probe rod assembly, and clean plastic probe housing,

ensuring that all passageways for water ﬂ ow are clear. – Clean probe rods using steel wool or similar mild abrasive material. – Inspect composite plastic probe housing. If any signs of cracking,

roughness, or deterioration, replace assembly. – When sliding probe housing into bracket from which it hangs, orient

housing so neither water ﬂ ow slot directly faces tank wall at back

end of bracket.

• Secure the chamber cover, making sure the cover gasket is seated and the chamber is sealed.

• Re-install evaporating chamber: – Reconnect the ﬁ ll line. – Reconnect electrical plugs (the plugs are color coded). – Reconnect the drain union. – Reconnect the steam hose.

• Verify electrical connections: – Verify that all DIN rail-mounted components are securely fastened to

DIN rail.

– Verify that all power terminal screws and lugs are tight from power

block to heaters.

– Verify that all plugs under the humidiﬁ er cover are completely

plugged in.

• Move the drain valve lever back to the auto position.

• Turn on the water supply.

• Turn on the electrical power.

Humidifier De-scaling Solution

Scale buildup on humidiﬁ er heaters acts as an insulator, reducing humidiﬁ er performance while increasing energy costs. To keep humidiﬁ ers operating as efﬁ ciently as possible, remove scale with DriSteem's Humidiﬁ er De-scaling Solution, available for purchase from your DriSteem representative or distributor.

The De-scaling Solution cleans without risk of corroding humidiﬁ er tanks or welds. The De-scaling Solution also cleans surfaces unreachable by hand scraping.

DriSteem's Humidiﬁ er De-scaling Solution is the only approved cleaner/de-scaler for use with DriSteem humidiﬁ ers. Use of other cleaners/ de-scalers may void your DriSteem warranty.

mc_021908_1410

3. Off-season maintenance

• Perform complete inspection and cleaning of the following: – Heaters – Probe rods – Skimmer port and water seal – Humidiﬁ er tank

• After cleaning, the humidiﬁ er should remain empty until humidiﬁ cation is required.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 41

Tap/softened water

OFF-SEASON SHUT-DOWN PROCEDURE

1. Switch off electrical power.

2. Remove the enclosure.

3. Shut off the water supply to the makeup valve.

4. Drain the evaporating chamber, and clean if necessary following the instructions in this manual.

5. Replace the enclosure.

6. Leave the evaporating chamber dry, the power off, and the water shut-off valve closed until the next humidification season.

MAINTENANCE

WARNING

Electric shock hazard

Only qualiﬁ ed electrical personnel should perform maintenance procedures.

mc_060310_0840

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 42

MAINTENANCE

RO/DI water option

RO/DI humidiﬁ ers use RO/DI water. Because these water types are mineral free, cleaning the evaporating chamber should not be necessary. However, there are some maintenance steps that should be followed to ensure all parts of the unit are in working order.

Important: Verify regularly that water processing equipment is operating correctly. The presence of chlorides in improperly processed deionized water will eventually cause pitting and failure of the humidiﬁ er tank and its components. Damage caused by chloride corrosion is not covered by your DriSteem warranty.

COOL DOWN HUMIDIFIER

If the tank is hot, cool it down by opening the manual ball valve on the side of the tank. The ﬂ oat valve will open allowing cool water to run into the tank until it is cool enough to handle. Then shut off the water supply, and allow the tank to drain completely.

INSPECTION AND MAINTENANCE

1. Remove the evaporating chamber:

• If the tank is hot, follow the instructions in “Cool down humidiﬁ er” above before proceeding.

• Shut off the water supply.

• Allow the tank to drain completely.

• Shut off the electrical supply.

• Disconnect the ﬁ ll line at the ﬁ ll ﬁ tting.

• Disconnect the electrical plugs between the tank components and the back of the electrical panel (includes: power plug, low water switch plug, tank temperature sensor plug and thermal trip plug).

Important: Disconnect by pulling on plug housing. Do not disconnect

by pulling on cord or wires.

• Disconnect the drain union on the back left corner of the frame.

• Disconnect the steam supply hose from the top of the tank.

• Lift the tank foot above the frame ﬂ ange and slide the tank assembly forward to remove.

2. Loosen the four cover bolts and remove the cover assembly from the tank.

3. Inspect the tank interior for debris or pitting.

4. Inspect the valve inlet for debris.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 43

RO/DI water option

5. Check the operation of the float valve and the condition of the float seat.

6. Check the low water switch to make sure the float slides freely on the stem.

7. Secure the chamber cover making sure the cover gasket is seated and the chamber is sealed.

8. Reinstall the evaporating chamber.

• Reconnect the ﬁ ll line.

• Reconnect electrical plugs (the plugs are color coded).

• Reconnect drain union.

• Reconnect steam hose.

9. Verify electrical connections:

• Verify that all DIN rail-mounted components are securely fastened to DIN

rail.

• Verify that all power terminal screws and lugs are tight from power block

to heaters.

• Verify that all plugs are completely plugged in.

MAINTENANCE

10. Close the drain valve.

11. Turn on the water supply.

12. Turn on the electrical power.

OFF-SEASON SHUT-DOWN PROCEDURE

1. Switch off electric power.

2. Remove the enclosure.

3. Shut off the water supply to the makeup valve.

4. Drain the evaporating chamber by opening the drain valve. For units with an end-of-season drain, refer to the Vapor-logic Installation and Operation Manual.

5. Replace the enclosure.

6. Leave the evaporating chamber dry, the power off, and the water shut-off valve closed until the next humidification season.

mc_061610_1520

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 44

MAINTENANCE

Troubleshooting:

LW series controller

Table 40-1: CRUV troubleshooting guide (tap/softened water)

Module indicating lights

Problem

Humidiﬁ er will not heat

Humidiﬁ er will not ﬁ ll

Ready

Full

water

Off Off Off Control transformer

On On Off

Off Off Off

Drain

Humidistat is not calling Set humidistat to call. Inspect for faulty humidistat.

Safety controls open Check safety controls, airﬂ ow switch, high limit humidistat, etc.

Faulty control board Verify control voltage between terminals.

Probe head deterioration* Replace probe head.

No water pressure at valve Check water supply/shut off valves.

Faulty water ﬁ ll valve

Plugged strainer Check strainer.

Possible cause Recommended action

Verify control voltage across secondary leads of transformer. Reset transformer circuit breaker.

Verify action of ﬁ ll water solenoid valve by turning control module switch from standby to normal operation. Audible click should be heard as solenoid operates.

Plugged valve Check valve.

Faulty control board Verify control voltage across input terminals "B&W".

Low ﬁ ll water conductivity. Water conductivity must be at least 30 S/cm.

Humidiﬁ er does not stop ﬁ lling

Low output

Unit short cycles

Reduced or no output even though water is at the proper level

* Probe rod corrosion or probe head material aging may cause level control system failure. This generally does not occur in the ﬁ rst two years of

operation.

Off Off Off

Off Off On Auto-drain mode 10 minute must complete ﬁ rst.

On On Off Electric drain valve not seating Correct cause of leakage or replace valve.

On On Off Fill valve is stuck open Check valve for foreign matter.

On &

On Off

Off

On On Off

Fill valve is stuck open Check valve for foreign matter.

Drain valve not closed, ﬁ ll valve installed backward

Probes may be incorrectly wired

Heater malfunctioning

Malfunctioning control system

Jumper wires violet, orange then brown to ground. If water stops, verify tank ground, check ﬁ ll water conductivity, then consult factory.

Check for correct water ﬂ ow through valve note arrow.

Conﬁ rm that unit is wired per diagram. Clean probe rod tips with steel wool.

Verify that proper voltage is being applied to heaters. Check heater (amp draw and compare to wiring diagram ratings).

Heater contactor not functioning - replace. Service fuses blown. Auxiliary limit controls not allowing system to operate (duct humidistat, airﬂ ow proving switch, etc.). Reset, replace or calibrate as required. Faulty or inaccurate humidistat, replace or calibrate.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 45

MAINTENANCE

Troubleshooting:

LW series controller and RO/DI water

Table 41-1: CRUV troubleshooting guide (RO/DI water option)

Problem Possible cause Recommended action

Control transformer

Humidiﬁ er will not heat

Humidiﬁ er will not ﬁ ll

Water ﬂ oat valve does not close

Reduced or no output even though water is at the proper level

Humidistat is not calling Set humidistat to call. Inspect for faulty humidistat.

Safety controls open Check safety control. (Airﬂ ow switch, high limit humidistat, etc.)

Low water ﬂ oat switch Verify control voltage from ﬂ oat switch and transformer secondary common.

No water pressure at valve Check manual water supply. Valve, minimum 25 psi water pressure.

Malfunctioning water ﬂ oat valve Check to make sure that valve ﬂ oat & stem moves freely.

Plugged ﬂ oat valve Check ﬂ oat valve seat.

Open drain valve Obstruction in drain valve will not allow complete closure, clean or replace valve.

Manual drain valve not closed Close drain valve.

Malfunctioning ﬂ oat valve Float ball has water leak. Float valve seat defective, replace.

Water passing into overﬂ ow stand pipe

Float valve stuck

Heater malfunctioning

Malfunctioning control system

Time delay/interlock relays Relay delay on time is 10-15 seconds. Check relays.

Verify control voltage across secondary leads of transformer. Reset transformer circuit breaker.

Readjust ﬂ oat valve rod, so water level reaches 1/4" - 3/8" from overﬂ ow edge when water is at ambient or cold state. Excessive water pressure, 80 psi maximum.

Obstruction will not allow ﬂ oat valve to seat properly, clean or replace with new seat.

Verify that proper voltage is being applied to heaters. Check heaters (amp draw and compare to wiring diagram ratings).

Heater contactor not functioning, replace. Service fuses blown. Auxiliary limit controls not allowing system to operate (duct humidistat, airﬂ ow proving switch, etc.). Reset, replace, or calibrate as required. Faulty or inaccurate humidistat, replace or calibrate.

Low water cut-off switch Check for proper operation.

TROUBLESHOOTING:

VAPOR-LOGIC CONTROLLER

Troubleshooting for CRUV with the optional Vapor-logic controller is included in the Vapor-logic Installation and Operation Manual that was shipped with the humidiﬁ er.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 46

MAINTENANCE

Replacement parts:

FIGURE 42-1: CRUV REPLACEMENT PARTS

Humidifier

RO/DI water CRUV Tap/softened water CRUV

OM-779-A

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 47

MAINTENANCE

Replacement parts:

Humidiﬁ er

Table 43-1: Replacement parts

Item Description Qty Part No. Item Description Qty Part No.

1 Phillips head screw, #8-32 x 1/2" 2 700170-007 15 Hose clamp, 3/4" 4 700560-075

2 Heater terminal cover 1 * 16 Hose, 3/4" ID 1 307020-002

3 Thermo cut-out 1 409560-001 17 Electric valve, 24V 3/4" 1 505400-001

4 Tank cover 1 * 18 Solenoid valve, 24V with ﬂ ying leads, 1/4" 1 505095

5 Heater element * 409600-* 19 Probe assembly gasket 1 309750-004

Hex nut plated, #8-32 4 700200-002

Hex nut plated DI, #8-32 6 700200-002 Probe assembly (CRUV 6-34) 1 406303-106

7 External tooth washer plated, #8 2 700200-003 21 Float switch assembly 1 *

8 LG phillips head bolt, 1/4-20 x 1" 4 700300-013 22 Float assembly 1 505310

9 Lock washer, 1/4" 4 700351-025

10 Cover to tank gasket 1 *

11 Probe assembly with conduit and ﬁ tting 1 406050-100 24 Seal ring, 1/4" 18 pipe thread 303 SST 1 306365

Probe assembly (CRUV 2-4) 1 406303-105

Ball valve assembly, 1/2" SST 1 505000-003

End of season drain valve assembly (not shown)

1 505086-003

12 Nylon probe housing 1 308500

13 Tank weldment 1 * Oriﬁ ce, .052 ﬁ ll models (CRUV 21-34) 1 160229-052

Nut assembly, 1/4"-20 (CRUV 2-4) 4 700650 26 Pipe weld, ﬁ ll valve 1 160215

Nut assembly, 1/4"-20 (CRUV 6-34) 2 700650 27 Probe assembly gasket 1 309750-004

* Specify humidiﬁ er model and serial numbers when ordering replacement parts.

Oriﬁ ce, .041 ﬁ ll models (CRUV 2-16) 1 160229-041

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 48

MAINTENANCE

Replacement parts:

FIGURE 44-1: CRUV SUBPANEL WITH LW SERIES CONTROLLER (TAP/SOFTENED WATER)

Subpanel with LW series controller

OM-7613

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 49

MAINTENANCE

Replacement parts:

Subpanel with LW series controller

Table 45-1: CRUV subpanel with LW series controller (tap/softened water)

Item Description Qty Part No.

1 Board, level control, 24V, LW-417 1 408632

2 Standoff, metal 1/4” x 3/8” (#8) 4 409592

Transformer, 600V, 24 VAC, Sec, 75 VA * 1 408986

Transformer, 277V, 24 VAC, Sec, 75 VA * 1 408982

Transformer, 120/208/240/480V, 24V Sec * 1 408965-001

4 Contactor * 1 407010- *

5 Switch, auxiliary 1 407001-023

6 Power block, 3 pole 1 408300-002

7 Terminal, 20A DIN rail mount * 408252-001

Enclosure, JIC, 16" x 14" x 6" (406 mm x 356 mm x 152 mm) *

Enclosure, NEMA-4, 16" x 14" (406 mm x 356 mm), (optional) *

1 407100-005

1 408150-003

9 Circuit breaker 1 406775- *

* Specify humidiﬁ er model and serial numbers when ordering replacement parts.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 50

MAINTENANCE

Replacement parts:

FIGURE 46-1: CRUV SUBPANEL WITH TIME DELAY AND RELAY (RO/DI WATER OPTION)

Subpanel with time delay and relay

OM-7612

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 51

MAINTENANCE

Replacement parts:

Subpanel with time delay and relay

Table 47-1: CRUV subpanel with time delay and relay (RO/DI water option)

Item Description Qty Part No.

Transformer, 600V, 24 VAC Sec 75 VA * 1 408986

Transformer, 277V, 24V Sec, 75 VA * 1 408982

Transformer, 120/208/240/480V 24V Sec * 1 408965-001

2 Contactor * 1 407010- *

3 Power block, 3 pole 1 408300-002

4 Relay, 24V DPDT, ﬁ nder 1 407900-016

5 Time delay, ﬁ nder 1 407900-023

6 Relay socket, DPDT, with time delay 1 407900-020

7 Terminal, 20A, DIN rail mount * 408252-001

Enclosure, JIC, 12" x 12" x 6" (305 mm x 305 mm x 152 mm) *

Enclosure, NEMA-4, 12" x 12" x 6" (305 mm x 305 mm x 152 mm), (optional) *

9 Circuit breaker 1 406775- *

1 408150-002

1 407100-004

* Specify humidiﬁ er model and serial numbers when ordering replacement parts.

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 52

MAINTENANCE

Subpanel with Vapor-logic optionReplacement parts:

FIGURE 48-1: CRUV SUBPANEL WITH VAPOR-LOGIC OPTION

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OM-7610

Page 53

Replacement parts: Subpanel with Vapor-logic option

Table 49-1: CRUV subpanel with Vapor-logic option

Item Description Qty Part No.

1 Main controller, Vapor-logic 1 408496-006

2 PC board support, locking 4 409591-004

Transformer, 600V, 24 VAC Sec, 75 VA * 1 408986

Transformer, 277V, 24 VAC Sec, 75 VA * 1 408982

Transformer, 120/208/240/480V 24V Sec * 1 408965-001

4 Contactor * 1 407010- *

5 Power block, 3 pole 1 408300-002

6 Terminal, 20A, DIN rail mount * 408252-001

7 Switch, door interlock, electric (optional) 1 408470

MAINTENANCE

8 Bracket, door interlock, small (optional) 1 165614

Enclosure, JIC, 16" x 14" x 6" (406 mm x 356 mm x 152 mm) *

Enclosure, NEMA-4, 16" x 14" (406 mm x 356 mm), (optional) *

10 Circuit breaker 1 406775- *

* Specify humidiﬁ er model and serial numbers when ordering replacement parts.

1 407100-005

1 408150-003

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 54

MAINTENANCE

Replacement parts:

FIGURE 50-1: CRUV SUBPANEL WITH VAPOR-LOGIC AND SSR OPTION

Subpanel with Vapor-logic and SSR options

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OM-7611

Page 55

Replacement parts: Subpanel with Vapor-logic and SSR options

Table 51-1: CRUV subpanel with Vapor-logic and SSR option

Item Description Qty Part No.

1 Main controller, Vapor-logic 1 408496-006

2 PC board support, locking 4 409591-004

Transformer, 600V, 24 VAC Sec, 75 VA * 1 408986

Transformer, 277V, 24V Sec 75 VA * 1 408982

Transformer, 120/208/240/480V 24V Sec * 1 408965-001

4 Contactor * 1 407010- *

5 Power block, 3 pole 1 408300-002

6 Terminal, 20A, DIN rail mount * 408252-001

7 Switch, door interlock, electric (optional) * 1 408470

MAINTENANCE

8 Bracket, door interlock, small (optional) 1 165614

9 Fan, cooling, 24” (610 mm) leads 1 405800-054

SSR, 2 pole, 50 Amp * 408679-003

SSR, 1 pole * 408679-003

Enclosure, JIC, 20" x 20" x 7" (508 mm x 508 mm x 178 mm) *

Enclosure, NEMA-4, 20" x 20" N4-20206 (508 mm x 508 mm), (optional) *

12 Circuit breaker 1 406775- *

* Specify humidiﬁ er model and serial numbers when ordering replacement parts.

1 407100-007

1 408150-004

CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 56

ARRANTY

Expect quality from the industry leader

Since 1965, DriSteem has been leading the industry with creative and reliable humidiﬁ cation solutions. Our focus on quality is evident in the construction of the CRUV humidiﬁ er, which features stainless steel construction. DriSteem also leads the industry with a Two-year Limited Warranty and optional extended warranty.

For more information

www.dristeem.com sales@dristeem.com

For the most recent product information visit our Web site: www.dristeem.com

DRI-STEEM Corporation

a subsidiary of Research Products Corporation DriSteem U.S. Headquarters is an ISO 9001:2000 certiﬁ ed company

U.S. Headquarters: 14949 Technology Drive Eden Prairie, MN 55344 800-328-4447 or 952-949-2415 952-229-3200 (fax)

Two-year Limited Warranty

DRI-STEEM Corporation (“DriSteem”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twentyseven (27) months from the date DriSteem ships such product, whichever date is the earlier.

If any DriSteem product is found to be defective in material or workmanship during the applicable warranty period, DriSteem’s entire liability, and the purchaser’s sole and exclusive remedy, shall be the repair or replacement of the defective product, or the refund of the purchase price, at DriSteem’s election. DriSteem shall not be liable for any costs or expenses, whether direct or indirect, associated with the installation, removal or reinstallation of any defective product. The Limited Warranty does not include cylinder replacement for electrode steam humidiﬁ ers.

DriSteem’s Limited Warranty shall not be effective or actionable unless there is compliance with all installation and operating instructions furnished by DriSteem, or if the products have been modiﬁ ed or altered without the written consent of DriSteem, or if such products have been subject to accident, misuse, mishandling, tampering, negligence or improper maintenance. Any warranty claim must be submitted to DriSteem in writing within the stated warranty period. Defective parts may be required to be returned to DriSteem.

DriSteem’s Limited Warranty is made in lieu of, and DriSteem disclaims all other warranties, whether express or implied, including but not limited to any IMPLIED WARRANTY OF MERCHANTABILITY, ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, any implied warranty arising out of a course of dealing or of performance, custom or usage of trade.

DriSteem SHALL NOT, UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS, REVENUE OR BUSINESS) OR DAMAGE OR INJURY TO PERSONS OR PROPERTY IN ANY WAY RELATED TO THE MANUFACTURE OR THE USE OF ITS PRODUCTS. The exclusion applies regardless of whether such damages are sought based on breach of warranty, breach of contract, negligence, strict liability in tort, or any other legal theory, even if DriSteem has notice of the possibility of such damages.

By purchasing DriSteem’s products, the purchaser agrees to the terms and conditions of this Limited Warranty.

European ofﬁ ce: Grote Hellekensstraat 54 b B-3520 Zonhoven Belgium +3211823595 E-mail: dristeem-europe@dristeem.com

Continuous product improvement is a policy of DriSteem; therefore, product features and speciﬁ cations are subject to change without notice.

DriSteem, CRUV, Drane-kooler, DriCalc, Rapid-sorb, Ultra-sorb, and Vapor-logic are registered trademarks of Research Products Corporation and are ﬁ led for trademark registration in Canada and the European community.

Product and corporate names used in this document may be trademarks or registered trademarks. They are used for explanation only without intent to infringe.

Extended warranty

The original user may extend the term of the DriSteem Limited Warranty for a limited number of months past the initial applicable warranty period and term provided in the ﬁ rst paragraph of this Limited Warranty. All the terms and conditions of the Limited Warranty during the initial applicable warranty period and term shall apply during any extended term. An extended warranty term of an additional twelve (12) months or twenty four (24) months of coverage may be purchased. The extended warranty term may be purchased until eighteen (18) months after the product is shipped, after which time no extended warranties are available.

Any extension of the Limited Warranty under this program must be in writing, signed by DriSteem, and paid for in full by the purchaser.

mc_051308_0630

Form No. CRUV-IOM-0517 Part No. 890000-001 Rev F