DriSteem VAPORSTREAM Installation, Operation And Maintenance Manual

READ AND SAVE THESE INSTRUCTIONS

VAPORSTREAM

Electric Humidifier

Installation, Operation, and Maintenance Manual

Warnings and cautions

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.

mc_011909_1215

CAUTION

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

Hot surfaces and hot water

This steam humidiﬁ cation system has extremely hot surfaces. Water in tank, steam hose and tubes, 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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VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Warnings and cautions

WARNING

Warnings and Cautions

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 open control cabinet or remove heater terminal 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_011909_1135

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):

1. Use Vapor-logic

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

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

mc_050808_1540

keypad/display to change 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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VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

iii

Table of contents

ATTENTION INSTALLER

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

DriSteem® Technical Support

800-328-4447

WHERE TO FIND MORE INFORMATION

Our web site:

The following documents are available on our web site: www.dristeem.com

• Catalogs

– Vaporstream

– Ultra-sorb

• Installation, Operation, and Maintenance manuals (IOM)

– Ultra-sorb

– Vapor-logic controller (includes

humidifier operation and troubleshooting)

• DriSteem Humidification System Design Guide (includes steam loss tables and general humidification information)

DriCalc®:

DriCalc, our software for humidiﬁ cation system sizing and selection, can be ordered at our web site. Also in DriCalc:

• Library of installation guides

• Dispersion and sensor placement in ducts and air handlers

• Vertical airflows

Call us at 800-328-4447

Obtaining documents from our web site or from DriCalc is the quickest way to view our literature, or we will be happy to mail literature to you.

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

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

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

North American models, capacities, and electrical specifications . . . . . . . 4

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Weights and cabinet sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Selecting a location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Mounting: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Support legs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Trapeze hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Wall brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Weather cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Outdoor Enclosure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Weights, electrical specifications, and connection sizes . . . . . . . . . . 17

Operating temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Piping: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Overview, tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Overview, RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Water supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Wiring: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

European requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Preventing electrical noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Control wiring and grounding requirements . . . . . . . . . . . . . . . . . . 34

Sensor placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Dispersion: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Selecting the dispersion assembly location . . . . . . . . . . . . . . . . . . . 36

Interconnecting piping requirements . . . . . . . . . . . . . . . . . . . . . . . . 37

Steam outlet connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Drip tee installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Single tube and multiple tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Rapid-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Ultra-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

SDU-I and SDU-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Area-type fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Table of contents

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Start-up checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Tap/softened water: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Water quality and skim duration . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Cool-down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

RO/DI water option: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Cool-down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Outdoor Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Control cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

SDU-I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

SDU-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Outdoor Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Keypad/display and troubleshooting

The Vapor-logic Installation and Operation Manual, which was shipped with your

humidiﬁ er, 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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VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OVERVIEW

Product overview

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

RO, DI, or softened water Tap water

Silica < 15 ppm

< 5 ppm < 25 ppm < 50 ppm

< 500 ppm

7 to 8

6.5 to 8.5

FIGURE 2-1: VAPORSTREAM SYSTEM EXAMPLE, TAP/SOFTENED WATER

Duct

Dispersion tube

Cover fastener

Cover

Steam outlet

Fill valve

Vapor-logic controller

Heaters

Thermal trip

Temperature sensor

Field connection terminal strip

Probe

Skimmer port outlet

Needle valve

OM-628

Cleanout tray

Field drain connection

Drain valve

Control cabinet

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.

TAP/SOFTENED WATER

Vaporstream 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. Vaporstream with tap/softened water will not operate with RO/DI water. For RO/DI water, use Vaporstream with the RO/DI water option.

RO/DI WATER OPTION

Vaporstream 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.

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Product overview

OVERVIEW

FIGURE 3-1: VAPORSTREAM HUMIDIFIER, RO/DI WATER OPTION

OM-1000

Cover fastener

Cover

Float valve

Overﬂ ow

Low-water cutoff

Drain valve

See Pages 22 and 23 for detailed installation drawings.

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

FIGURE 3-2: WATER LEVEL CONTROL FOR TAP/SOFTENED WATER HUMIDIFIER

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.

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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WATER TYPE CONVERSION

Vaporstream tap/softened water humidiﬁ ers can be converted in the ﬁ eld for use with RO/DI water, and Vaporstream 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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VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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

Supply water connection

Float rod

VLC-OM-026

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

mc_030910_1336

Float ball

SPECIFICATIONS

North American models, capacities, and electrical speciﬁ cations

Table 4-1: Vaporstream capacities and electrical specifications, tap/softened water and RO/DI water

Vapor-

stream-

model

(kW-

stages)

2-1 5.7 2.6 1 1 16.7 9.6 8.3 7.2 4.2 3.3 — — — — — 2

3-1 8.6 3.9 1 1 25.0 14.4 12.5 10.8 6.3 5.0 — — — — — 3

4-1 11.4 5.2 1 1 33.3 19.2 16.7 14.4 8.3 6.7 — — — — — 4

5-1 15.2 6.9 1 1 — 25.6 22.2 19.2 11.1 8.9 — — — — — 5.33

6-1 17.1 7.8 3 1 — 28.8 25.0 21.7 12.5 10.0 16.7 14.4 12.5 7.2 5.8 6

9-1 25.7 11.7 3 1 — 43.3 37.5 32.5 18.8 15.0 25.0 21.7 18.8 10.8 8.7 9

12-1 34.2 15.5 3 1 — — — 43.3 25.0 20.0 33.3 28.9 25.0 14.4 11.5 12

16-1 45.6 20.7 3 1 — — — — 33.3 26.7 44.4 38.5 33.3 19.2 15.4 16

21-1 59.9 27.2 3 1 — — — — 43.8 35.0 — — 43.8 25.3 20.2 21

25-1 71.3 32.3 3 1 — — — — — 41.7 — — — 30.1 24.1 25

12-2 34.2 15.5 6 2 — 57.7 50.0 43.3 25.0 20.0 33.3 28.9 25.0 14.4 11.5 12

18-2 51.3 23.3 6 2 — 86.5 75.0 65.0 37.5 30.0 50.0 43.3 37.5 21.7 17.3 18

24-2 68.4 31.0 6 2 — — — 86.6 50.0 40.0 66.6 57.7 50.0 28.9 23.1 24

32-2 91.2 41.4 6 2 — — — — 66.7 53.3 88.8 77.0 66.7 38.5 30.8 32

42-2 119.7 54.3 6 2 — — — — 87.5 70.0 — — 87.5 50.5 40.4 42

50-2 142.5 64.6 6 2 — — — — — 83.3 — — — 60.1 48.1 50

18-3 51.3 23.3 9 3 — 86.5 75.0 65.0 37.5 30.0 50.0 43.3 37.5 21.7 17.3 18

27-3 77.0 34.9 9 3 — 129.8 112.5 97.5 56.3 45.0 74.9 65.0 56.3 32.5 26.0 27

36-3 102.6 46.5 9 3 — — — 130.0 75.0 60.0 99.9 86.6 75.0 43.3 34.6 36

48-3 136.8 62.1 9 3 — — — — 100.0 80.0 133.2 115.5 100.0 57.7 46.2 48

63-3 179.6 81.5 9 3 — — — — 131.3 105.0 — — 131.3 75.8 60.6 63

75-3 213.8 97.0 9 3 — — — — — 125.0 — — — 90.2 72.2 75

24-4 68.4 31.0 12 4 — 115.4 100.0 86.6 50.0 40.0 66.6 57.7 50.0 28.9 23.1 24

36-4 102.6 46.5 12 4 — 173.1 150.0 130.0 75.0 60.0 99.9 86.6 75.0 43.3 34.6 36

48-4 136.8 62.1 12 4 — — — 173.3 100.0 80.0 133.2 115.5 100.0 57.7 46.2 48

64-4 182.4 82.7 12 4 — — — — 133.3 106.7 177.6 154.0 133.4 77.0 61.6 64

84-4 239.4 108.6 12 4 — — — — 175.0 140.0 — — 175.1 101.0 80.8 84

100-4 285.0 129.3 12 4 — — — — — 166.7 — — — 120.3 96.2 100

Maximum

steam

capacity

lbs/hr kg/h Qty. Stages** 120V 208V* 240V* 277V* 480V* 600V* 208V* 240V* 277V* 480V* 600V*

†

Heaters

Current draw (amps)

kWSingle-phase Three-phase***

* If using an optional SDU or Area-type fan unit for dispersion, run a neutral line with 208V/240V/single-phase and 208V/three-phase power

supply lines to provide a 120V circuit for the fan. With all other power supply voltages (other than 120V), provide a separate 120V circuit for

the fan, or order from DriSteem a transformer installed in the control cabinet. ** Heater stage identiﬁ es the number of contactors. *** Three-phase power supply connection. All heater loads are wired Delta.

†

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

mc_021010_0445

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

available for downloading and printing at www.dristeem.com

European models, capacities, and electrical speciﬁ cations

Table 5-1: Vaporstream European electrical specifications and capacities, tap/softened water and RO/DI water

SPECIFICATIONS

Vaporstream

model

(kW-stages)

2-1 1 1 1.8 8.0 2.4

3-1 1 1 2.8 12.0 3.6

4-1 1 1 3.7 16.0 4.7

5-1 1 1 4.9 21.3 6.3

6-1 3 1 5.5 24.0 7.1 6 8.7 7.8

9-1 3 1 8.3 35.9 10.7 9 13.0 11.6

12-1 3 1 11.0 47.9 14.2 12 17.3 15.5

16-1 3 1 16 23.1 20.7

21-1 3 1 21 30.3 27.1

25-1 3 1 25 36.1 32.3

12-2 6 2 11.0 47.9 14.2 12 17.3 15.5

18-2 6 2 16.5 71.9 21.4 18 26.0 23.3

24-2 6 2 22.1 95.8 28.3 24 34.6 31.0

32-2 6 2 32 46.2 41.4

42-2 6 2 42 60.6 54.3

50-2 6 2 50 72.2 64.6

18-3 9 3 16.5 71.9 21.4 18 26.0 23.3

27-3 9 3 24.8 107.8 32.1 27 39.0 34.9

36-3 9 3 33.1 143.8 42.7 36 52.0 46.5

48-3 9 3 48 69.3 62.1

63-3 9 3 63 90.9 81.4

75-3 9 3 75 108.3 97.0

24-4 12 4 22.0 95.8 28.5 24 34.6 31.0

36-4 12 4 33.1 143.8 42.7 36 52.0 46.5

48-4 12 4 44.2 191.7 56.6 48 69.3 62.1

64-4 12 4 64 92.4 82.7

84-4 12 4 84 121.2 108.6

100-4 12 4 100 144.3 129.3

* Heater stage identiﬁ es the number of contactors. ** Three-phase power supply connection. All heater loads are wired Delta. *** 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

mc_022410_1710

Heaters Single-phase 230V Three-phase 400V **

Qty. Stages * kW I max. A

Steam capacity

kg/h***

kW I max. A

Steam capacity

kg/h***

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

SPECIFICATIONS

Dimensions

Table 6-1: Standard control cabinet dimensions and weights

Cabinet size

S 16 h x 14 w x 6 d 406 h x 356 w x 152 d 32 15

M 20 h x 20 w x 7 d 508 h x 508 w x 178 d 55 25

L 24 h x 24 d x 7 d 610 h x 610 w x 178 d 73 33

XL 30 h x 24 w x 9 d 762 h x 610 w x 229 d 91 41

XXL 36 h x 30 w x 9 d 914 h x 762 w x 229 d 136 62

* Weight does not include humidiﬁ er.

mc_021010_0555

inches mm lbs kg

Cabinet dimensions Shipping weight*

Table 6-2: Control cabinet weights for European models

Cabinet dimensions Weight

mm kg

300 h x 300 w x 210 d 6

500 h x 700 w x 250 d 29

600 h x 800 w x 250 d 46

FIGURE 6-1: VAPORSTREAM DIMENSIONS, TAP/SOFTENED WATER AND RO/DI WATER

A’

VLC-OM-039 mc_030410_0900

B’

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

SPECIFICATIONS

Dimensions

Table 7-1: Vaporstream dimensions, tap/softened water and RO/DI water

Without mounted control cabinet

Vaporstream model (kW - stages)

2-1, 3-1, 4-1, 5-1 16.52 420 26.00 660 18.88 480

6-1, 9-1, 12-1, 16-1, 21-1, 25-1 22.25 565 22.00 559 18.88 480

12-2, 18-2, 24-2, 32-2, 42-2, 50-2 29.72 755 22.00 559 18.88 480

18-3, 27-3, 36-3, 48-3, 63-3, 75-3 37.22 945 22.00 559 18.88 480

24-4, 36-4, 48-4, 64-4, 84-4, 100-4 44.72 1136 22.00 559 18.88 480

Vaporstream model (kW - stages)

Max.

control

cabinet

size

A (length) B (width) C (height)

inches mm inches mm inches mm

With mounted control cabinet option

A’ (length 2) B’ (width 2) C’ (height 2)

inches mm inches mm inches mm

2-1, 3-1, 4-1, 5-1 M 21.22 539 34.00 864 30.31 770

6-1, 9-1, 12-1, 16-1, 21-1, 25-1 M 26.90 683 30.00 762 30.31 770

12-2, 18-2, 24-2, 32-2, 42-2, 50-2 L 30.90 785 30.00 762 34.11 866

18-3, 27-3, 36-3, 48-3, 63-3, 75-3 XXL 37.22 945 32.00 813 46.11 1171

24-4, 36-4, 48-4, 64-4, 84-4, 100-4 XXL 44.72 1136 32.00 813 46.11 1171

Notes:

• For all Vaporstream models with optional insulation, add 1" (25 mm) to dimensions A, C, and C’.

• Dimensions are largest possible for these models. Actual dimensions may be smaller.

mc_021010_0500

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

SPECIFICATIONS

Weights and cabinet sizes

Table 8-1: Vaporstream weights and control cabinet sizes, tap/softened water and RO/DI water

Vaporstream

model

(kW-stages)

2-1 35 16 79 36 M M M M M M — — — — —

3-1 35 16 79 36 M M M M M M — — — — —

4-1 35 16 79 36 M M M M M M — — — — —

5-1 35 16 79 36 M M M M M M — — — — —

6-1 57 26 157 71 — M M M M M M M M M M

9-1 57 26 157 71 — M M M M M M M M M M

12-1 57 26 157 71 — — — M M M M M M M M

16-1 57 26 157 71 — — — — M M M M M M M

21-1 57 26 157 71 — — — — M M — — M M M

25-1 57 26 157 71 — — — — — M — — — M M

12-2 79 36 237 108 — L L L L L L L L L L

18-2 79 36 237 108 — L L L L L L L L L L

24-2 79 36 237 108 — — — L L L L L L L L

32-2 79 36 237 108 — — — — L L L L L L L

42-2 79 36 237 108 — — — — L L — — L L L

50-2 79 36 237 108 — — — — — L — — — L L

18-3 110 50 326 148 — L L L L L L L L L L

27-3 110 50 326 148 — XL L L L L L L L L L

36-3 110 50 326 148 — — — XL L L L L L L L

48-3 110 50 326 148 — — — — L XXL XL L L L L

63-3 110 50 326 148 — — — — XL XXL — — L L L

75-3 110 50 326 148 — — — — — XXL — — — L XXL

24-4 153 70 427 194 — L L L L L L L L L L

36-4 153 70 427 194 — XL XL XL L L L L L L L

48-4 153 70 427 194 — — — XL L L XL L L L L

64-4 153 70 427 194 — — — — XL XXL XL XL XL L L

84-4 153 70 427 194 — — — — XL XXL — — XL L L

100-4 153 70 427 194 — — — — — XXL — — — L XXL

Shipping

weight

lbs kg lbs kg 120V 208V 240V 277V 480V 600V 208V 240V 277V 480V 600V

Operating

weight

†

Single-phase power Three-phase power

Control cabinet size*

(M, L, XL, XXL)

* Control cabinet sizes in this table are for the largest required cabinet for each model. Depending on Vaporstream options chosen you may receive

a smaller cabinet than the one shown in this table. Contact DriSteem if you need more detailed information about control cabinet sizes. See control cabinet dimensions in Table 6-1.

†

Operating weight does not include control cabinet. See control cabinet weights in Table 6-1.

mc_021010_0446

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Selecting a location

INSTALLATION

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

• Easy access for maintenance

• Maximum ambient temperature for the control cabinet is 104 °F (40 °C).

• Noises inherent to operation:

– Fill cycles (tap/softened water humidiﬁ er)

See Fill noise in tap/softened water humidiﬁ er on Page 28.

– Control cabinet: cycling contactors

• Clearance recommendations — primarily top, left side, and front (see Figure 9-1).

• Convenient location to dispersion system for routing of steam hose or tubing (see Dispersion section of this manual).

• Electrical connections: Power, control, and safety circuits

• Plumbing connections: Supply water, drain piping, and condensate return piping (see the Piping section of this manual)

• Water seal requirements (see Piping section of this manual)

• Avoid locations above critical equipment or processes.

• Avoid locations close to sources of electromagnetic emissions, such as power distribution transformers and high horsepower motors controlled by variable frequency drives.

Important:

Installation must comply with governing codes.

See Dispersion, beginning on page 35, for dispersion assembly placement guidelines.

FIGURE 9-1: VAPORSTREAM CLEARANCE RECOMMENDATIONS

Top: 18" (457 mm)

Back: 6" (152 mm)*

Cleanout tray

Left side: 36" (914 mm)*

Floor: 24" (610 mm)*

* When the control cabinet is mounted on the Vaporstream, provide 36" (914 mm) clearance from the front of the control cabinet and 6" (152 mm)

from the bottom of the cabinet to the ﬂ oor.

Right side 6" (152 mm)

Cleanout plate

Back: 6" (152 mm)*

DC-1181

Front: 36" (914 mm)

Left side: 36" (914 mm)*

Floor: 24" (610 mm)*

Top: 18" (457 mm)

Right side 6" (152 mm)

OM-7637

Front: 36" (914 mm)

Cleanout plate

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Mounting:

Overview

To ensure that the water level control system works properly, the tank must be mount ed level from side to side and front to back.

The mounting methods described in this manual are the only options available to maintain compliance to the UL 998 standard; alternate mounting methods will compromise the humidiﬁ er’s CE, ETL, and C-ETL approvals.

Table 10-1: Mounting options by model

Models

Mounting method

Trapeze X X

Support legs X

Wall brackets X X

Weather cover X X

Outdoor Enclosure X X

mc_022310_1354

2-1, 3-1, 4-1, 5-1 All other models

Standard Optional Standard Optional

WARNING

Mounting hazard

Mount humidiﬁ er per the instructions in this manual and to a structurally stable surface. Improper mounting of the humidiﬁ er can cause it to fall or tip, resulting in severe personal injury or death.

mc_060110_1540

FIGURE 10-1: SUPPORT LEGS

VLC-OM-006

SUPPORT LEGS

Support legs are not available for single-heater models (2-1, 3-1, 4-1, and 5-1). These models must be mounted with a trapeze (Page 11) or an Outdoor Enclosure (Pages 14 through 21).

Use enclosed bolts, nuts, and washers to fasten legs to tank. Shim or adjust so the tank sets level side to side and front to back. Verify level after the tank is ﬁ lled and is at operating weight.

Optional set of four legs and hardware

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Mounting:

For overhead installations, install a drip pan to prevent possible water damage (see ﬁ gure below).

Secure trapeze hanger to an overhead structure that is strong enough to support the operating weight of the Vaporstream humidiﬁ er and ﬁ eld installed piping, plus the weight of the control cabinet if it is mounted on the humidiﬁ er.

Adjust the mounting so that the tank sets level side to side and front to back. Verify level after the tank is ﬁ lled and is at operating weight.

FIGURE 11-1: TRAPEZE HANGER

Trapeze hanger

Overhead installation

Do not install water piping and humidiﬁ ers above expensive apparatus or equipment. A broken water pipe, leak ing valve gland, condensation or other water leaks can occur causing serious dam age and costly re pairs to the equip ment below.

If this type of installation cannot be avoided, install a drip pan constructed of galvanized sheet metal under the hu mid i ﬁ er to catch potential water drips (see Figure 11-1).

Pipe the overﬂ ow from the Vaporstream directly to a ﬂ oor drain — do not drain the Vaporstream into the drip pan. Terminate the drip pan and the Vaporstream overﬂ ow drains above an open ﬂ oor drain.

Vaporstream Models 2-1 through 5-1 Vaporstream Models 6-1 through 100-4

Secure channel to an overhead structure that is strong enough to support the Vaporstream's operating weight. See the weight tables in this document.

Secure rods to an overhead structure that is strong enough to support the Vaporstream's operating weight. See the weight tables in this document.

Provide 18" (457 mm) minimum clearance above cover

Cleanout

1¼" (DN32) minimum

VLC-OM-038

Angle iron

Hanger plate

Drip pan recommended in overhead installations (by installer) to prevent possible water damage

Humidiﬁ er drain to appropriate building waste. Do not drain humidiﬁ er directly into drip pan. Install water seal as shown in the piping section of this manual

25% larger than humidiﬁ er

Provide 18" (457 mm) minimum clearance above cover

Cleanout

1¼" (DN32) minimum

VLC-OM-005

Drip pan recommended in overhead installations (by installer) to prevent possible water damage

3/8" (M10) threaded rod of length required

Angle iron sized to properly support humidiﬁ er

Humidiﬁ er drain to appropriate building waste. Do not drain humidiﬁ er directly into drip pan. Install water seal as shown in the piping section of this manual

25% larger than humidiﬁ er

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Mounting:

Wall brackets

DriSteem recommends using 3/8" (M10) fasteners.

• Wood stud wall, recommended mounting — two horizontal 2 × 4s (100 mm × 50 mm timbers) with center line spaced at dimension shown in Table 12-1.

– Three-heater models: lag bolt (coach screw) both horizontal 2 × 4s (100

mm × 50 mm timbers) to two vertical studs (16"

[404 mm] on center) – Six-heater and nine-heater models: lag bolt (coach screw) to three studs – 12-heater models: lag bolt (coach screw) to four studs

Lag bolt (coach screw) wall brackets to the horizontal 2 × 4s

(100 mm × 50 mm timbers). Locate the wall brackets so they are ﬂ ush to the front and back ﬂ anges of the tank.

• Metal stud wall — follow the same 2 × 4 wood stud (100 mm × 50 mm timber) wall guidelines, but provide a second set of 2 × 4s (100 mm × 50 mm timbers) on the backside of the wall. Run a bolt with a washer through the face 2 × 4 (100 mm × 50 mm timber), the metal stud, and the backside 2 × 4 (100 mm × 50 mm timber) with washer and nut to connect the 2 × 4s (100 mm × 50 mm timbers). DriSteem does not recommend mounting the nine-heater and 12-heater models on a metal stud wall — use support legs.

• Concrete or block walls — use concrete anchors (expansion bolts) rated for the operating weight of the Vaporstream humidiﬁ er. Locate the wall brackets so they are ﬂ ush to the front and back ﬂ anges of the tank.

FIGURE 12-1: WALL BRACKETS

24.75" (629 mm)

DriSteem optional wall brackets (two required)

VLC-OM-007

Table 12-1: Wall brackets Dimension A

(center to center of mounting holes)

Vaporstream model inches mm

Shim or adjust mounting so the tank sets level from side to side and front to back. Verify level after the tank is ﬁ lled and is at operating weight.

One-heater models: 2-1, 3-1, 4-1, 5-1

Three-heater models: 6-1, 9-1, 12-1, 16-1, 21-1, 25-1

Six-heater models: 12-2, 18-2, 24-2, 32-2, 42-2, 50-2

Nine-heater models*: 18-3, 27-3, 36-3, 48-3, 63-3, 75-3

Twelve-heater models*: 24-4, 36-4, 48-4, 64-4, 84-4, 100-4

* Wall bracket installation on metal stud walls

is not recommended for nine-heater and twelve-heater models

mc_022310_1345

17 432

28 711

34 864

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Weather cover

INSTALLATION

FIGURE 13-1: WEATHER COVER EXPLODED VIEW

Panel

Hinged door

Panel

OM-7435

The optional Vaporstream weather cover is water-resistant and designed to protect the humidiﬁ er from rain and sun. The weather cover has been tested and approved by ETL Testing Laboratories, Inc., and is listed to UL Standard 1995 and certiﬁ ed to CAN/CSA Standard C22.2 No. 236.

Hinged door

INSTALLATION ISSUES SPECIFIC TO WEATHER COVER APPLICATIONS

• Installation must comply with all governing codes.

• The bottom of the weather cover is open to ac com mo date piping and electrical con nec tions.

• Electrical connections must be made with approved, outdoor-rated, watertight conduit.

• Freeze protection must be provided on all water piping.

• Steam supply must be insulated.

• Avoid using steam hose in outdoor applications — the effects of ultraviolet rays will prematurely age the steam hose.

• Installer required to drill a hole in weather cover for steam piping. Seal after making steam connection to maintain weather protection.

• The steam outlet must be isolated with a union so the steam supply can be dis con nect ed easily for removal of the weather cover to gain access to the Vaporstream for service and maintenance.

ANNUAL WEATHER COVER MAINTENANCE REQUIREMENTS

• Check all fasteners and verify they are secure.

• Check for any sign of leakage — trace back to origin and repair.

mc_022510_1235

Installation notes

Open the hinged doors to make necessary connections to the humidiﬁ er. Refer to the installation section of this manual for all elec tri cal, supply water, and drain con nec tion requirements.

Table 13-1: Weather cover weights

Weight*

Weather cover size

lbs kg

1-heater 390 177

3-heater 395 179

6-heater 430 195

9-heater 465 211

12-heater 500 227

* Weight does not include humidiﬁ er or

control cabinet.

mc_030210_0950

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Weather cover

FIGURE 14-1: WEATHER COVER DIMENSIONS

Table 14-1: Weather cover dimensions

Letter Description

1-heater and

3-heater covers

inches mm inches mm inches mm inches mm

6-heater cover 9-heater cover 12-heater cover

OM-7434

Note:

Weather Covers are only available in the United States and Canada.

The Vaporstream Outdoor Enclosure is weather tight with access doors and supplemental heating and cooling. See Pages 14 through 21.

A Height 66 1676 66 1676 66 1676 66 1676

B Length 44 1118 44 1118 44 1118 44 1118

C Width 35 889 39 991 44 1118 50 1270

Distance from

bottom

6 152 6 152 6 152 6 152

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

FIGURE 15-1: VAPORSTREAM OUTDOOR ENCLOSURE WITH STANDARD OR OPTIONAL STEAM OUTLET, ELEVATION VIEW

Ventilation fan

See Note 2

4.5"

Knockouts, 4" (102 mm) on center

Enclosure drain 1½" pipe thread (DN40) with male nipple

mc_030410_1500

Overview

Pipe chase

Vaporstream humidiﬁ er

DC-1481

Standard steam outlet

Optional steam outlet

Notes:

1. The Outdoor Enclosure has two available steam dis tri bu tion conﬁ gurations:

The standard con ﬁ g u ra tion has a steam outlet

at the back of the Outdoor Enclosure for con nect ing to steam dispersion unit piping.

The optional internal steam dis tri bu tion

con ﬁ g u ra tion routes steam within the Outdoor Enclosure and down through the enclosure pipe chase into a building.

2. There are four knockouts located on the right and left side of the enclosure. Knockout sizes are 1½" (hole dia. 50 mm) for Vaporstream models with 1-6 heaters and 2" (hole dia. 63.5 mm) for Vaporstream models with 9-12 heaters. Run the electrical power into the en clo sure at these knockouts.

3. All piping from the Vaporstream unit to the steam outlet is stainless steel pipe. Depending on the application, interconnecting piping from the steam outlet to the dispersion assembly can be tubing or DriSteem steam hose. See the Dispersion section of this document for more information about connecting to the dispersion assembly.

4. A separate 20 amp, 120 Vac service must be brought to the Outdoor Enclosure to power the enclosure heaters and fans.

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

FIGURE 16-1: VAPORSTREAM OUTDOOR ENCLOSURE, TOP VIEW

Standard steam outlet (exits enclosure here)

Optional steam outlet (exits enclosure through pipe chase)

Vaporstream hu mid i ﬁ er

Control cabinet

Note: Some 9-12 heater

models have control cabinet

mounted on humidiﬁ er

Front section optional heater

Front access door

mc_030410_1505

Overview

DC-1482

Enclosure drain

Front access door:

• Vaporstream models with 1-6 heaters have one acces door

• Vaporstream models with 9-12 heaters have two access doors

Pipe chase extending 1" (25 mm) above ﬂ oor

Side access door

Side section heater

Intake ven ti la tion fan

Table 16-1: Vaporstream Outdoor Enclosure dimensions*

Item Description

A Enclosure height 56.00 1422 56.00 1422

B Enclosure width 40.00 1016 54.00 1372

D 2.50 64 2.50 64

F 19.50 495 19.50 495

H 22.00 559 29.50 899

J 7.00 178 7.00 178

K 8.25 210 9.25 235

L Length 60.00 1524 64.00 1626

* See drawings above and on facing page.

mc_030410_1520

Pipe chase position

Pipe chase size

Steam hose and

tube position

with 1-6 heaters with 9-12 heaters

inches mm inches mm

2.50 67 2.50 67

8.00 203 8.00 203

13.50 343 13.50 343

Vaporstream models

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

Weights, electrical specifications, and connection sizes

Table 17-1: Vaporstream Outdoor Enclosure weights

Vaporstream model

2-1, 3-1, 4-1, 5-1 1 485 220 530 240

6-1, 9-1, 12-1, 16-1, 21-1, 25-1 3 515 234 620 281

12-2, 18-2, 24-2, 32-2, 42-2, 50-2 6 535 243 690 313

18-3, 27-3, 36-3, 48-3, 63-3, 75-3 9 860 390 1090 494

24-4, 36-4, 48-4, 64-4, 84-4, 100-4 12 910 413 1190 540

* Includes humidiﬁ er

mc_030410_1100

Number of

heaters

Table 17-2: Vaporstream Outdoor Enclosure electrical specifications

Maximum disconnect

Outdoor Enclosure without heater package

Outdoor Enclosure with heater package

Voltage Current

120 Vac,

50/60 Hz

120 Vac,

50/60 Hz

0.5A 6A

10.5A 20A

Outdoor Enclosure

shipping weight*

lbs kg lbs kg

Table 17-3: Vaporstream Outdoor Enclosure connection sizes

Description All Vaporstream models

Water makeup (ﬁ ll) 1/4” pipe thread (DN8)

Drain 3/4” (DN20)

Condensate return 3/4” pipe thread (DN20)

mc_030410_1101

Outdoor Enclosure operating weight*

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

Operating temperatures

The Outdoor Enclosure option is used when DriSteem humidiﬁ ers are installed outdoors. The following information is not intended to supersede any requirements of federal, state or local codes having jurisdiction; prior to installing the unit, consult authorities having jurisdiction.

DriSteem humidiﬁ ers housed in an Outdoor Enclosure operate properly from

-40 °F to 122 °F (-40 °C to 50 °C).

Insulate supply water piping to avoid dripping from condensation. To ensure that water will not remain in the ﬁ ll line and freeze if there is a loss of power, ﬁ eld-install additional valves in a conditioned space upstream of the ﬁ ll valve. These valves should be powered on the same circuit as the humidiﬁ er such that if the power goes off, water will drain out of the ﬁ ll line to prevent freezing. See Figure 18-1.

FIGURE 18-1: OPTIONAL INSTALLATION METHOD FOR WATER SUPPLY PIPING

Normally closed ﬁ ll valve (by factory)

Makeup water supply piping (by installer)

Open to drain Vent with check valve (by installer)

Disconnect by installer; see Detail A

120V supply Refer to Table 16-2 for electrical requirements.

Building exterior

Roof decking

120V from unit disconnect or other source

Normally closed (fail closed) min. ¼” electric valve (by installer)

Domestic water, 80 psig max.

* Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam; otherwise, condensate may form on nearby

surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.

1” (25 mm) air gap and open drain required*

Drain line

Optional water seal, by installer. Standard water seal is within the enclosure and is prepiped at the factory.

Normally open (fail open) min. ½” electric valve (by installer)

Heated building interior

Detail A: Disconnect box

120V

To valve (by installer)

To humidiﬁ er

mc_030410_1515

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

Mounting

• Outdoor Enclosure must be level and located so there is enough clearance for opening access doors.

• Verify that position of support legs, pad, or curb properly support unit, and support structure dimensions coincide with unit dimensions.

• Locate unit so air intakes are not too close to exhaust fan outlets, gasoline storage, or other contaminants that could cause dangerous situations. Using and storing gasoline or other ﬂ ammable vapors and liquids in open containers in the vicinity of this appliance is hazardous.

• When located on roof, Outdoor Enclosure air intakes must be a minimum of 14" (356 mm) above roof to prevent intake of snow or splashed rain. Locate Outdoor Enclosure so prevailing winds do not blow into air intakes.

• Remove all shipping brackets and other packaging prior to installing Outdoor Enclosure.

• During transit, unloading, and setting of unit, bolts and nuts may have become loosened. Check that all nuts are tightened.

• There are four knockouts on the right and left side of the enclosure. It is recommended that electrical power is run into enclosure at these knockouts.

• Outdoor Enclosure is designed for lifting by two methods:

– Preferred method of lifting is by forklift. This is only possible if the forks

extend across entire unit. Forks that do not extend across entire unit could cause tipping, resulting in unsafe conditions or damage to the unit.

– Alternative method of lifting is through unit’s channel base frame and/

or special lifting lug hooks installed on the unit. Use a load spreader of sufﬁ cient width to ensure that lifting cables clear sides of unit. If such a spreader is not available, insert wood strips between cables and unit where necessary. All four lifting points must be used; they are marked “lift here” on the unit.

In both cases it must be lifted from the bottom base and kept level, and

it must not tip, fall, or twist. If unit is severely twisted during handling, permanent damage could occur. It is installer’s responsibility to verify handling equipment’s capability to safely handle Outdoor Enclosure.

FIGURE 19-1: OUTDOOR ENCLOSURE MOUNTING OPTIONS

Flush

DC-1110

Curb

OM-1095

14" (356 mm)

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Outdoor Enclosure:

Mounting

• Outdoor Enclosure has two available steam distribution conﬁ gurations:

– Standard conﬁ guration is a steam outlet on one side of enclosure for

connecting to steam dispersion unit piping.

– Optional internal conﬁ guration routes steam within Outdoor Enclosure

and down through pipe chase into building.

• See Outdoor Enclosure dimensions in Table 16-1.

• Pipe chase is inside enclosure. Cover for pipe chase is provided to maintain proper pressure in enclosure if this opening is not utilized. However, it is recommended that this pipe chase be used for both supply water piping and drain piping, in which case pipe chase cover should be removed. Install insulation rated for 212 °F (100 °C) to completely ﬁ ll area around pipes to maintain proper enclosure pressure.

• When enclosure is pad mounted or when pipe chase cannot be used, supply water and drain piping can be run through the knockouts — preferably on side opposite utility connections.

• When ordered with heater package, two thermostat-controlled strip heaters are provided to keep enclosure at constant minimum temperature: one heater is in control cabinet section, and one heater is in front section.

• Enclosure drain is provided. In case of water leak, water will drain from enclosure through this drain.

FIGURE 20-1: OUTDOOR ENCLOSURE CLEARANCES

Left side: 12" (305 mm)

Front: 36" (914 mm)

Top: 12" (305 mm)

Back: 24" (610 mm)

OM-955

Right side: 36" (914 mm)

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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DriSteem VAPORSTREAM Installation, Operation And Maintenance Manual

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