READ AND SAVE THESE INSTRUCTIONS

®

HUMIDI-TECH and

HUMIDI-TECH DI

ELECTRIC STEAM HUMIDIFIERS

Installation, Operation and

Maintenance Manual

VM99-C-0400-M-0801.pdf 1 11/19/2009 9:51:50 AM

TABLE OF CONTENTS

To the purchaser and installer

Thank you for purchasing our HUMIDI-TECH ® humidifier. We have designed and built this equipment to give you complete satisfaction and trouble-free service for many years. Familiarizing yourself with this manual will help ensure proper operation of the equipment for years to come.

This manual covers the installation and maintenance procedures for both the HUMIDI-TECH and

HUMIDI-TECH DI humidifiers.

DRI-STEEM Humidifier Company

HUMIDI-TECH humidifier overview .............................. 3

Electrical specifications, capacities and dimensions ....... 4

Installation

Locating and mounting the HUMIDI-TECH humidifier ..... 5

Piping ............................................................................... 6

Wiring .............................................................................. 7

Dispersion using space

distribution units (SDU-E and SDU-I) .......................... 8

Dispersion using dispersion tubes .............................. 11

Dispersion using a RAPID-SORB ®

dispersion panel ............................................................ 12

Start-up and operation .................................................. 13

Maintenance ................................................................... 15

HUMIDI-TECH (standard water models)

trouble shooting guide .................................................. 18

HUMIDI-TECH DI trouble shooting guide .................... 19

Replacement parts ......................................................... 20

Two-year limited warranty ............................................ 24

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HUMIDI-TECH

®

HUMIDIFIER

Figure 3-1: HUMIDI-TECH humidifier

The standard HUMIDI-TECH unit requires water conductivity of at least

100

µS/cm to operate. It will not operate with water treated by reverse osmosis or deionization processes.

(See DI model below.)

Electrical connections

DN40 or DN50 flexible vapor hose connects to dispersion tube in duct

(female)

Keyholes for wall mounting

DN20 (¾") coupling, skimmer port and overflow drain

Water fill access hole

Removable evaporating chamber

Slide assembly under evaporating chamber provides easy removal for cleaning

Duct

Electrical side

INCOLOY alloy-sheathed immersion heaters

Condensate

return line

OM-82-4

Figure 3-2: HUMIDI-TECH DI humidifier

(deionized water)

The HUMIDI-TECH DI humidifier, shown here, is specifically designed for use with deionized or reverse osmosis water.

DN40 or DN50 flexible vapor hose connects to dispersion tube in duct.

Electrical connection

Float cutoff switch

(female)

Keyholes for wall mounting

Water fill access hole

DN20 (¾") coupling, skimmer port and overflow drain

Ball valve

Removable evaporating chamber

Slide assembly under evaporating chamber provides easy removal for cleaning.

Duct

Condensate return line

Electrical side

INCOLOY alloy-sheathed immersion heaters

OM-82-5

3

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SPECIFICATIONS

Table 4-1: Electrical specifications, capacities and weights

Steam capacity per hour

I max. A

Model number kW

Shipping weight †

Operating weight †

VM-2

VM-4

VM-6

VM-8

VM-10

VM-12

VM-14

VM-16

VM-21

VM-25

VM-30

VM-34 kg /h

2.7

5.4

8.2

10.9

13.6

16.3

19.1

21.8

28.6

34.0

40.9

46.3

Singlephase

230V***

8.0

16.0

24.0

31.9

39.9

47.9

--

--

--

--

--

--

Threephase

400V

--

8.7**

13.0**

17.3**

15.2**

17.3

20.2

23.1

30.3

36.1

43.3

49.1

8

10

12

2

4

6

14

16

21

25

30

34 kg

36

38

38

38

38

39

39

41

41

26

26

36 kg

3 7

38

6 3

6 3

6 3

69

69

5 5

5 5

6 3

71

71

Table notes:

** For wire sizing, the highest leg draw is shown due to current imbalance.

*** Output capacity and kW derate of 7%

† Add the following to shipping and operating weights for

HUMIDI-TECH options:

– SDU-I: 5 kg

– SDU-E: 4 kg

– SSR control: 1 kg

All HUMIDI-TECHs operate at 50/60

Hz. SDU-E is not an available option on 400V three-phase HUMIDI-TECH models drawing more than 21.7 amps and using SSR control.

Figure 4-1: HUMIDI-TECH ® dimensions

Left side view

Venting

Front view

472 mm

38 mm

146 mm 57 mm

409 mm

Bottom view Top view

13 mm hole in base for water fill line

19 mm

16 mm

38 mm

146 mm

57 mm

614 mm

Power wire knockout

Control wiring knockout

57 mm

Steam outlet

276 mm

614 mm

DN20 (¾") frame drain

DN20 (¾") tank drain

Control or

SDU wiring knockout

Power wiring knockout

DC-1167

4

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MOUNTING THE HUMIDI-TECH

®

Locating and mounting the

HUMIDI-TECH humidifier

The HUMIDI-TECH humidifier is designed to lag bolt to the wall, and it should be installed in a space located near an air duct system.

The mounting location should provide a minimum clearance of 915 mm to the front and 610 mm to the right side of the unit. This clearance is required for removing the evaporating chamber and accessing electrical compartment. Also, a minimum clearance of 150 mm to the left side is required for louvers and enclosure fasteners.

Electrical power supply, water make up piping and drain piping must also be considered. Electrical power supply connections are made at the lower or upper right rear corner of the unit. Water makeup and draining piping connections are made at the lower left rear corner.

Consider the following when selecting the location of the humidifier:

• Convenient access to duct

• Electrical and plumbing connections

• Required clearances

• External water seal requirements

When mounting on a stud wall (studs 405 mm centres), locate studs and position coach screws in place so that each of the screws (405 mm apart) will center on a stud. Mark hole locations and pre-drill

6 mm diameter pilot holes using mounting template on the HUMIDI-TECH box. Secure frame to wall with coach screws provided.

For hollow block or poured concrete wall mounting, position template in place and mark the holes. Drill appropriate pilot hole for two 10 mm toggle bolts or two 10 mm machine bolt lead anchors. Secure frame in place.

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PIPING

Water make up piping may be of any codeapproved material (copper, steel, or plastic). The final connection size is DN6 (1/4"). In cases where water hammer may be a possibility, a shock arrestor should be considered water pressure must be between 170 kPa and 582 kPa.

Drain piping may be of any code-approved material

(copper, steel, or plastic rated for 100 °C minimum).

If drainage by gravity is not possible, a small lift pump should be used (DRI-STEEM Part

No. 400280).

The final connection size is DN20 (3/4") for drain fitting and frame drain. This connection size should not be reduced. (See Figures below for proper drain piping configurations.) The evaporator drain should be piped and discharge into a floor drain. Combining the two drain pipes into a single drain line may result in the backflow of drain water into the humidifier cabinet, causing the unit to malfunction.

Figure 6-1: Drain adjacent to wall Figure 6-2: Drain through or in wall

Humidifier cabinet

300 mm

25 mm air gap

OM-1005-1

DN20 (¾") frame drain (male)

DN20 (¾") tank drain

(male)

50 mm

300 mm

50 mm

25 mm open drain

OM-1006-1

DN20 (¾") frame drain (male)

DN20 (¾") tank drain (male)

Note: Locate the cabinet drain line exit away from the humidifier drain line exit, if possible. This will prevent water vapor from migrating up the cabinet drain line. Extending the cabinet drain line may also be effective.

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WIRING

All wiring must be in accordance with all governing codes, and with the HUMIDI-TECH ® or HUMIDI-

TECH DI wiring diagram. The diagram is located inside the removable subpanel cover on the righthand side of the humidifier cabinet. Power supply wiring must be rated for 105 °C.

Refer to the amp draw on the rating plate, and use the following tables to determine the appropriate wire, conduit and fused disconnect requirements.

When selecting a space to install the HUMIDI-TECH, avoid areas close to sources of electromagnetic emissions such as power distribution transformers.

Figure 7-1: Field wiring requirements

Fused disconnect, sized per tables below.

Power supply cable, sized per tables below.

(Provided by installer)

0.6 m to 1.9 m

1.7 m preferred

Figure 7-2: Shielded/screened cable drain wire connection to lug

Right side view of electrical panel

Microprocessor board

OM-1007

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

Grounding requirements:

The earth must be made by solid metal to metal connections.

The ground must be a good radio frequency earth. Ground wire should be same size as power wiring.

lug-o&m

Shield/screen ground lug

Note: For maximum E.M.C. effectiveness, all humidity, temperature, and airflow controls should be wired using multicolored shielded/screened plenum-rated cable with a drain wire for the shield/screen. The drain wire should be connected to the shield/screen ground terminal with its length kept to less than 50 mm.

Table 7-1: 230 Volt single phase

A

0 - 18

18.1 - 24

24.1 - 30.7

30.8 - 42.7

42.8 - 57

57.1 - 75.7

75.8 - 93.7

93.8 - 113.2

113.3 - 144

144.1 - 174

70

95

174.1 - 201.7

120

10

16

25

35

50

2.5

4

6

Wire size mm2

35

50

70

10

16

16

16

25

2.5

4

6

Ground wire size mm2

Table 7-2: 400 Volt three phase

A

0 - 15.7

15.8 - 21

21.1 - 27

27.1 - 37.5

37.6 - 51

51.1 - 66.7

66.8 - 82.5

16

25

35

82.6 - 100.5

50

100.6 - 128.2

70

128.3 - 155.2

95

155.3 - 179.2

120

4

6

10

2.5

Wire size mm2

25

35

50

70

16

16

16

4

6

10

Ground wire size mm2

2.5

0 - 8

8.1 - 10.4

10.5 - 12.8

12.9 - 16

16.1 - 20

20.1 - 25.6

25.7 - 32

32.1 - 40

40.1 - 50.4

50.5 - 64

64.1 - 80

80.1 - 100

100.1 - 128

128.1 - 160

Table 7-3: Fuse/ breaker requirements

I max. A

63

80

100

125

160

200

20

25

32

40

50

Breaker size amps

10

13

16

Note: The use of semiconductor fusing is recommended with the use of the SSR option.

7

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DISPERSION USING SPACE DISTRIBUTION UNITS

SDU-I:

Provides instant, internal absorption

The Space Distribution Unit Internal Absorption

(SDU-I) disperses humidity with no visible vapor trail or wetness, making the HUMIDI-TECH ® with an

SDU-I ideal for use in finished spaces. When room

RH is 40% or less, the SDU-I fan mixes room air and steam to ensure complete absorption before discharge as humidified air. The SDU-I is available for models VM-2 through VM-10.

SDU-E:

For higher capacity units or remote mounting

The Space Distribution Unit External Absorption

(SDU-E) mounts either directly on top of the HUMIDI-TECH cabinet or remotely within a space, providing application flexibility. The SDU-E is available for models VM-4 through VM-34.

Mounting the SDU

The SDU may be mounted on a wall above the

HUMIDI-TECH cabinet or mounted on a wall remote from the HUMIDI-TECH. Use the mounting template on the box for correct placement. Two coach screws are provided with each fan unit. (See Page 5 for mounting instructions.)

Figure 8-1: SDU field wiring

This optional fan unit can be mounted on a wall directly above the HUMIDI-TECH cabinet (SDU-E).

Steam outlet

Air intake vents

OM-55-1

If necessary, the fan unit can be mounted on a wall, allowing the HUMIDI-TECH to be remotely located.

OM-56-1

SDU-E

Field wiring terminals for fan and airflow proving switch

HUMIDI-TECH

Electrical panel right side view vmsbpnlasm-11-a-o&m

8

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DISPERSION USING SPACE DISTRIBUTION UNITS

Figure 9-1: SDU-E mechanical detail

614 mm

Steam outlet

472 mm

276 mm

Front view Side view

Steam inlet 57 mm

OM-54-1

Field wiring is required to connect the SDU fan and airflow proving switch terminals to the respective

HUMIDI-TECH ® electrical panel terminals. Refer to the external connections diagram in the package shipped with your unit.

If the SDU-E or SDU-I is immediately above the

HUMIDI-TECH, disconnect both hose clamps on the steam hose, grip the hose and rotate it to break it loose from the tubing, and then slide the hose up onto the SDU steam tube until sufficient clearance is provided to move the tank.

Note: Maximum ambient RH must not exceed 40% for the SDU-I to operate properly.

HUMIDI-TECH is a class-one-rated assembly with the SDU. It has been tested and is in compliance with the requirements to be mounted in areas accessible to the general public.

Figure 9-2: SDU-I mechanical detail

614 mm

Humidified air outlet

OM-2016

276 mm

Front view

Steam inlet

472 mm

Air inlet

Side view

57 mm

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SPACE DISTRIBUTION UNIT, EXTERNAL ABSORPTION (SDU-E)

Rise, throw and spread (SDU-E)

As steam is discharged from the humidifier, it quickly cools and turns to a visible fog that is lighter than air. As this fog is carried away from the humidifier by the airstream, it tends to rise toward the ceiling. If this fog contacts solid surfaces

(columns, beams, ceiling, pipes, etc.) before it disappears, it could collect and drip as water. The greater the space relative humidity, the more the fog will rise, throw and spread before disappearing.

The distances the fog travels before it disappears are given in Table 10-1.

Table 10-1 lists the recommended minimum vertical

(rise), horizontal (throw) and width (spread) clearances for SDU-E area-type humidifiers at 40%, 50% and 60% RH in the space.

The SDU-E contains a 926 cmh blower

(m 3 /h) and an airflow proving switch field wired to the

HUMIDI-TECH humidifier electrical panel. A wiring diagram of the SDU-E is included with the unit.

On a call for humidity, the humidifier will begin producing steam and the start relay will energize the

SDU blower. Time-delay is controlled by the

VAPOR-LOGIC ®

3 microprocessor.

VM-4

VM-6

VM-8

VM-10

VM-12

VM-16

VM-21

VM-25

VM-30

VM-34

Table 10-1: SDU-E Visible vapor travel

Model

Rise

(m)

0.30

0.30

0.30

0.50

0.50

0.60

0.60

0.60

0.60

0.60

40% RH@ 21°C 50% RH@ 21°C

2.1

2.3

2.5

2.5

2.5

Throw

(m)

1.5

Spread

(m)

0.30

1.5

1.7

1.8

1.8

0.30

0.30

0.50

0.50

0.60

0.60

0.60

0.60

0.60

Rise

(m)

0.50

0.50

0.50

0.60

0.60

0.60

0.60

0.80

0.80

0.80

2.1

3.0

3.2

3.2

3.2

Throw

(m)

Spread

(m)

2.0

0.50

2.0

2.0

2.1

2.1

0.50

0.50

0.60

0.60

0.60

0.60

0.80

0.80

0.80

Rise

(m)

.80

.80

.80

1.0

1.0

1.0

1.0

1.1

1.1

1.1

60% RH@ 21°C

Throw

(m)

2.3

2.3

2.3

2.5

2.5

2.7

3.7

3.8

3.8

3.8

Spread

(m)

0.80

0.80

0.80

1.0

1.0

1.0

1.0

1.1

1.1

1.1

Table 10-1 notes:

Table 10-1 states the vertical (rise), horizontal

(throw) and width (spread) dimensions that can be expected with the HUMIDI-TECH with SDU-E.

Surfaces cooler than ambient temperature, or objects directly in the path of visible vapor discharge, may cause condensation and dripping.

Rise: Maximum height visible vapor rises above the steam outlet grill of the SDU-E.

Throw: Maximum horizontal distance visible vapor travels from the steam outlet of the SDU-E.

Spread: Maximum width visible vapor spreads out from the steam outlet of the SDU-E.

10

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DISPERSION USING DISPERSION TUBES

Examples of mounting a dispersion tube

Figure 11-1: Mounted horizontally in duct Figure 11-3: Mounted vertically

Vapor hose

OM-228-1 OM-230-1

Vapor hose and dispersion tube should be pitched back to the humidifier with a gradual slope of 15%.

A single dispersion tube cannot be used with

VM-30 or VM-34.

This is not recommended on models VM-10 through VM-34.

IMPORTANT NOTES: When duct is located more than 3 m away from unit, vapor hose is not recommended; DN40 minimum hard pipe should be used instead. VM-30 and VM-34 must use a multiple tube steam dispersion system.

Figure 11-2: Mounted horizontally in duct and lower than HUMIDI-TECH unit

Tee

150 mm min.

OM-229-1

75 to125 mm (150 to 300 mm for

VM-21, VM-25, VM-30 and VM-34)

A water seal must be located in drain line as shown to maintain steam pressure. A single dispersion tube cannot be used with VM-30 or VM-34.

Table 11-1: Vapor hose sizing

Model

VM 2-10

Capacity kg/hr up to 13.5

VM 12-16 up to 26

VM 12-16 over 26

VM 21-25 up to 38.5

Vapor hose

DN

DN40 hose kit without drain

DN40 hose kit with drain

DN50 hose kit without drain

DN50 hose kit with drain

VM 30-35

These models require multiple tube assemblies.

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DISPERSION USING DISPERSION TUBES

Mounting dispersion tube without condensate drain

Figure 12-1: Single-Tube

• Orient dispersion tubes so that tubelets point up.

• Connection can be made to the humidifier with vapor hose or hard piping.

• Hard piping should have a minimum

I.D. of DN40 (1½") .

• Maintain a minimum pitch of 15% back to the humidifier should be maintained.

• Short-sweep 90° elbows are not recommended; use two 45° elbows 300 mm apart or longsweep 90° elbows instead.

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

• Insulating hard piping will reduce the steam output loss caused by condensation.

• When mounting the humidifier above the level of dispersion tube, see Figure 10-2 on Page 10.

85 mm

3.25"

85 mm

85 mm

85 mm

85 mm

85 mm

DN8 (1/4" NPT) coupling*

65 mm

65 mm

Insertion length

High temperature resin tubelets

15% pitch

Mounting nut

Insertion length

High temperature resin tubelets

1% pitch

2% pitch

Mounting nut

DN15 (1/2" O.D.) stainless steel (condensate drain)*

Movable duct plate (can be mounted within limits of 65 mm).

OM-351-1

Mounting dispersion tube with condensate drain

• Orient dispersion tube so that tubelets point up.

• The dispersion tube must be pitched a minimum of 1% toward the drain when using a condensate drain.

• Condensate drain tubing must be pitched a minimum of 2% back to the humidifier.

• Condensate drain is not provided when steam flow is kg/h or less.

Figure 12-2: RAPID-SORB ® with condensate wasted to floor drain

Dispersion tube

Orificed tubelets

Air flow SST channel

Failure to follow these recommendations may result in excessive back pressure on the humidifier. This may lead to dispersion tube(s) spitting, steam blowing through water seals, or leaking gaskets.

When the distance between humidifier and the dispersion tube(s) exceeds 6 m, consult factory for recommendations.

Mounting a RAPID-SORB dispersion panel

For RAPID-SORB mounting dimensions, please see the drawing at right.

Duct

DN40

(1½") vapor hose or rigid piping

Slip coupling or hose cuff

Header

Pitch 1% minimum

Air gap

Open drain

Escutcheon plate

Mounting bracket

150 mm min.

125 mm min.

DN20 (¾") condensate drain** tube by others

OM-224-s

Notes:

* When steam flow is 15 kg/h or less, condensate drain tubing is not provided by DRI-STEEM. A minimum pitch of 15% back to the humidifier must be maintained in the dispersion tube when there is no separate condensate drain.

** Condensate drain tubing material must be suitable for 100 °C water.

12

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START-UP AND OPERATION

Introduction

After the system has been properly installed and connected to both electrical and water supplies, it may be started.

Start-up and checkout procedures

Mounting

Check mounting verify that the unit is level and securely supported before filling with water.

Piping

Verify that all piping connections have been completed as recommended and that water pressure is available.

• Standard makeup water piping

(HUMIDI-TECH)

Use cold or hot make up water. If the water pressure is above 414 kPa and/or water hammer would be objectionable, install a pressurereducing valve or shock arrester. Even though the

HUMIDI-TECH has an internal 25 mm air gap, some local codes may require a vacuum breaker.

Important: Minimum water supply pressure is 172 kPa.

• DI makeup water piping (HUMIDI-TECH)

In this unit the electronic probe control is replaced by float valve control. A float switch provides heater protection in the event of a low-water condition and is common to all DI humidifiers. The wiring diagram is located inside the electrical panel cover.

Electrical

Verify that all wiring connections have been made in accordance with all governing codes and the enclosed HUMIDI-TECH ® wiring diagram. The external connections diagram will be found in the packet with this manual.

Caution: Only qualified electrical personnel should perform start-up procedure.

VAPOR-LOGIC

®

control

VAPOR-LOGIC

3

3

is the standard controller for the

HUMIDI-TECH. For more information regarding the operation of the VAPOR-LOGIC see the VAPOR-LOGIC tions manual.

3

3

microprocessor,

Installation and opera-

Figure 13-1: Electronic probe control for maintaining proper water level (standard water

HUMIDI-TECH models only)

A three-probe conductivity sensor cycles a solenoidoperated water fill valve to maintain proper water levels.

VM99-C-0400-M-0801.pdf 13

OM-211-1

Fill valve off

Fill valve on

Low water

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START-UP AND OPERATION

Control system start-up/checkout

1.

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

2.

Confirm that the control signal connected to the VAPOR-LOGIC ®

3

system is compatible with the VAPOR-LOGIC

3

program. Identify the

program code on the wiring VAPOR-LOGIC

3 diagram. Refer to the VAPOR-LOGIC

3

manual to decipher the code using the nomenclature description.

3.

Confirm all wiring is correct per wiring diagram.

4.

Confirm J17, J18 and J19 shunt connectors on

VAPOR-LOGIC

3

board are in their correct position per wiring diagram. See the

VAPOR-LOGIC

3 locations.

manual for the physical

5.

Confirm that the keypad is mounted on the

HUMIDI-TECH with modular cable routed away from high voltage circuits and connected to the

J2 female connector on the control board.

6.

Turn on water supply. Confirm drain valve is closed.

7.

Turn on power. The keypad will display the introduction of VAPOR-LOGIC

3 enter AUTO mode.

and will then

8.

The system will initiate filling of the tank with water. The keypad will display "Filling" as part of the idle screen information.

9.

Airflow switch input must be closed.

10. High limit humidistat input must be closed or

Variable Air Volume (VAV) control system high limit transmitter must be connected.

11. Sufficient water in the tank, airflow switch closed, high limit humidistat closed, door interlock circuit (optional) closed and a call for humidity will activate the heat output.

If the tank does not contain water and the heat output is activated by the

VAPOR-LOGIC

3

control system, a serious failure will result. Immediately remove power from the system and verify that all wiring has been completed done per the wiring instructions in the manual and the unit wiring diagram.

12. During normal operation, the keypad will display humidifier operating status. See the

VAPOR-LOGIC

3

manual for descriptions to change any of the operating parameters.

14

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MAINTENANCE

The best way to determine how often your particular system will need maintenance is to remove the cover and inspect it after its first three months of duty. Potable water carries a variety of minerals and other materials in a mix that varies from location to location. This variation in water quality, combined with the hours of operation and duty cycle, will determine your own unique maintenance schedule.

Water quality makes a difference

1.

Light to moderately hard water (35 mg/ l to

•

•

170 mg/ l) requires:

Annual cleaning

Regular skimming

2.

High mineral content water (more than 170 mg/ l) requires:

• Cleaning frequency determined by use and water quality

• Regular skimming

• Periodic drain and flush cycles

3.

DI/RO water (VMDI models) requires:

• No regular cleaning (regular inspections are advised)

• No regular skimming or drain and flush cycles

• Regular verification that water processing equipment is operating correctly. The presence of chlorides in improperly processed DI water will eventually cause pitting and failure of the tank and its components.

4.

To dramatically reduce mineral accumulation inside the standard water models, softening of the makeup water is recommended. (Solids, like silica, are not removed in the softening process.)

To inspect and service

1.

Remove the evaporating chamber

• Remove the two fasteners on each side of the cover enclosure. (Figure 15-1)

• Remove the enclosure.

• Do not remove the electrical panel cover or heater terminal cover until electrical power is disconnected. Safety first.

• If the HUMIDI-TECH has an SDU mounted directly above it, the SDU cover must be removed before removing the unit cover.

• If the tank is hot, cool it down by moving the valve lever located on the back of the drain valve to the manual open position – the fill valve will eventually open allowing cool water to run through the tank until it is cool enough to handle.

• Shut off the water supply.

• Shut off the electrical supply.

• Allow the tank to completely drain.

• Disconnect the fill line at the supply side of the fill valve.

• Disconnect the electrical plugs between the tank components and the back of the electrical panel (includes: power plug, fill plug, drain plug, water level control plug, tank temperature sensor plug and thermal trip plug). 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 flange and slide the tank assembly forward to remove.

Standard water models (HUMIDI-TECH

®

)

Proper skimming, draining and flushing

1.

Skimming will remove most water impurities at the surface, ensuring proper surface tension and an even boil. Skimming will remove most entrained contaminants that have not yet precipitated as scale.

2.

Draining and flushing will remove entrained contaminants and assist in removing precipitated contaminants like scale and silica.

Figure 15-1: Screw cap detail

OM-778-3

VM99-C-0400-M-0801.pdf 15

15

11/19/2009 9:51:55 AM

MAINTENANCE

Standard water models (HUMIDI-TECH

®

, continued)

2.

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

3.

Clean the tank interior using a putty knife or similar flat instrument.

4.

Unplug probe plug assembly. Leave ground wire connected to tank. Unscrew the probe rod assembly and clean the plastic probe housing, ensuring that all passageways are clear. Clean the probe rods using steel wool or a similar mild abrasive material. Inspect the composite plastic probe housing for any signs of cracking, roughness, or deterioration. If found, replace.

5.

Install the probe and probe plug assembly.

Verify ground wire.

6.

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

7.

Re-install the evaporating chamber.

• Reconnect the fill line.

• Reconnect the electrical plugs

(plugs are color coded).

• Reconnect the drain union.

• Reconnect the vapor hose.

8.

Move the drain valve lever back to the auto position.

9.

Turn on the water supply.

10. Turn on the electrical power.

Off-season shut-down procedure

1.

Switch off electrical power.

2.

Remove enclosure.

3.

Shut off water supply to make-up valve.

4.

Drain evaporation chamber, and clean if necessary (see “To inspect and service” on previous page).

5.

Replace enclosure.

6.

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

16

VM99-C-0400-M-0801.pdf 16 11/19/2009 9:51:55 AM

MAINTENANCE

DI water models (HUMIDI-TECH

®

DI)

The HUMIDI-TECH DI unit uses DI/RO water.

Because these water types are mineral-free, cleaning the evaporator 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

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.

To inspect and service

1.

Remove the evaporating chamber.

• Remove the two fasteners on each side of the cover enclosure.

• Remove the enclosure.

• Do not remove the electrical panel cover or heater terminal cover until electrical power is disconnected. Safety first.

• If the HUMIDI-TECH has a space distribution unit (SDU) mounted directly above it, the SDU cover must be removed before removing the unit cover.

• If the tank is hot, cool it down by opening the manual ball valve on the side of the tank. The float valve will open allowing cool water to run into the tank until it is cool enough to handle.

• Shut off the water supply.

• Shut off the electrical supply.

• Allow the tank to drain completely.

• Disconnect the fill line at the fill fitting.

• 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).

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 flange and slide the tank assembly forward to remove.

5.

Check the operation of the float valve and the

6.

7.

9.

condition of the float seat.

Check the low water switch for free operation.

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

8.

Reinstall the evaporating chamber.

• Reconnect the fill line.

• Reconnect electrical plugs

(plugs are color coded).

• Reconnect drain union.

• Reconnect vapor hose.

10. Turn on the water supply.

11. Turn on the electrical power.

Off-season shut-down procedure

1.

Switch off electric power.

2.

3.

4.

5.

Close the drain valve.

Remove enclosure.

Shut off water supply to make-up valve.

Drain evaporating chamber by opening the drain valve. For units with end-of-season drain, refer to the VAPOR-LOGIC ®

3

manual.

Replace enclosure.

6.

Leave chamber dry, power off, and water shutoff valve closed until the next humidification season.

VM99-C-0400-M-0801.pdf 17

17

11/19/2009 9:51:55 AM

HUMIDI-TECH

®

(STANDARD WATER )TROUBLE SHOOTING

PROBLEM POSSIBLE CAUSE

Humidifier does not heat.

Incorrect or nonexistent supply voltage to unit

Humidifier will not fill.

No water pressure at valve

Faulty water fill valve

Plugged strainer

Humidifier does not stop filling.

Plugged valve

Faulty control board

Lack of tank to probe electrical continuity

Low output

Unit short-cycles

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

Incorrect or nonexistent control voltage

Humidistat not calling

Safety controls open.

Fill valve stuck open

Drain valve not closed

Fill valve installed backward

Autodrain mode

Electric drain valve not seating

Fill valve stuck open

Controller cycle rate set too low

Heater malfunctioning

Malfunctioning control system

RECOMMENDED ACTION

Check main line safety switch.

Check main line fuses.

Check for proper supply voltage.

Reset control transformer circuit breaker.

Check for 24 VAC control circuit voltage at T-1 and T-2 on the control board.

Set humidistat to call. Inspect for faulty humidistat.

Check safety controls, airflow switch, and high limit humidistat.

Check water supply/shut-off valves.

Check for 24 volts at the fill valve.

Check strainer.

Check valve.

Verify control voltage across the fill valve output.

Water conductivity must be 100 mS/cm or 34.2 mg/l. Add salt to the tank. If this solves the problem, consult factory for further advice.

Check valve for foreign matter.

Check for correct water flow through valve, by noting arrow.

Humidifier may be in periodic drain and flush. Check controller display.

Correct the cause of leakage or replace valve.

Check valve for foreign matter.

Review controller cycle set point.

Verify that proper voltage is being applied to heaters.

Check heater amp draw and compare to wiring diagram ratings.

Replace heater contractor if not functioning. Verify auxiliary limit controls (humidistat, airflow proving switch, etc.) and reset, replace or calibrate as needed.

Note: Probe rod corrosion or probe head material aging may cause level control system failure. This generally does not occur in the first two years of operation.

18

VM99-C-0400-M-0801.pdf 18 11/19/2009 9:51:55 AM

HUMIDI-TECH

®

DI TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE RECOMMENDED ACTION

Humidifier will not heat.

Humidifier will not fill.

Humidifier does not stop filling.

Control transformer

Humidistat is not calling

Reset control transformer circuit breaker.

Set humidistat to call. Inspect for faulty humidistat.

Safety controls open

Low water cutoff

No water pressure at valve

Malfunctioning float switch

Plugged fill valve

Check safety controls, airflow switch, high limit humidistat, etc.

Check at board 32 and 33. Measure 0 volts for closed switch, approximately 2.5 volt for A.C. open switch.

Check manual water supply. Valve for minimum 172 kPa water pressure.

Check to make sure that float moves freely on stem.

Check fill valve inlet.

Open drain valve Obstruction in drain valve will not allow complete closure.

Clean or replace valve.

Manual drain valve not closed Close drain valve.

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

Fill valve stuck open

Heater malfunctioning

Malfunctioning control system

Check valve for foreign matter, water-logged float, broken float am, or worn valve stopper.

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

Replace heater contactor if not functioning. Verify auxiliary limit controls (humidistat, airflow proving switch, etc.) and reset, replace or calibrate as needed.

VM99-C-0400-M-0801.pdf 19

19

11/19/2009 9:51:55 AM

REPLACEMENT PARTS

3/4" NPT frame drain

(male)

Tank drain

Hole for fill tube

Tank drain

3/4" NPT

(male)

HUMIDI-TECH DI model

Note: Refer to the tables on the next page for replacement part numbers.

20

VM99-C-0400-M-0801.pdf 20

HUMIDI-TECH ® standard water model

OM-778-1

11/19/2009 9:51:55 AM

REPLACEMENT PARTS

Table 21-1: HUMIDI-TECH ® replacement parts (refer to the drawing on previous page)

16

17

17

18

12

13

14

15

No.

Description

8

9

10

10

11

11

6

7

5

5

3

4

1

2

11

Head bolt, large Phillips, ¼ - 20 X 1"

Thermo cut-out

Cover, heater terminal

Hose clamp, 2"

Hose cuff, 1½"

Hose cuff, 2"

Cover, tank

Heater element

Probe assembly with cord and plug

Probe assembly gasket

Probe assembly, VM 2-4

Probe assembly, VM 6-34

Valve, ¾" electric, 24V

Valve, ½" SST ball

Drain, ¼ " NPT E.O.S., 24V solenoid

SST w/DIN plug (not shown)

Tank weldment

Valve, ¼ " solenoid, 24V w/DIN plug

Cabinet enclosure

Hose, ¾" ID

Hose clamp, ¾"

Nut assembly, ¼ -20, VM/VMDI 2-4

Nut assembly, ¼ -20, VM/VMDI 6-34

Cover, tank gasket

* Specify humidifier model and serial numbers when ordering.

1

2

1

4

4

1

1

1

1

Qty.

1

1

1

1

1

1

*

1

1

1

1

2

4

1

Part No.

700300-013

409560-001

*

700560-200

305390-006

305391-006

*

*

406050-005

309750-004

406270

406275

505400-001

505000-003

505086-003

*

505084-001

330002-001

307020-002

700560-075

700650

700650

*

No.

Description

34

35

35

36

36

37

30

31

32

33

26

27

28

29

22

22

23

24

25

19

20

21

22

Washer, #8 external tooth, pltd

Nut, #8-32 hex, pltd

Cover, subpanel

Fill adapter, VM 2-4

Fill adapter, VM 6-16

Fill adapter, VM 21-34

Panel, insulation

Sensor, temperature

Screw, Phillips head, #8-32 X ½"

Frame assembly, chassis

Clip, wire harness

Clip, temperature sensor

Valve assembly, float

Switch, float, 1/8" NPT

Gasket, 2.50 OD X 1.90 ID

Ring, seal, ¼ "-18 NPT

Gasket, bulkhead, 1.60 OD X 1.15 ID

Probe housing, nylon, VM

Nut, VM heater .475

Nut, VM heater .375

Gasket, VM heater .475

Gasket, VM heater .375

Cap, Black

Part No.

700200-003

700200-002

120277

160226-041

160224-041

160224-052

309845-003

405760

700170-007

165541

405892-001

408251

505310

408420-002

309750-004

306365

309750-005

308500

409601-001

409602-001

409601-002

409602-002

409593-002

Qty.

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1

1

1

1

8

1

1

2

6

VM99-C-0400-M-0801.pdf 21

21

11/19/2009 9:51:55 AM

REPLACEMENT PARTS

Figure & Table 22-1: Space Distribution Unit (SDU-E)

No. Description

1 Cabinet Base, SDU99

2 Blower, SDU99 External Assembly

3 Frame, SDU External

4 Disp Chamber, SDU99 w/1 1/2" Out

4 Disp Chamber, SDU99 w/2" Out

5 Switch, Air Flow

6 Tubing, 1/4" PVC Plastic Tubing

7 Nut, 8-32 X 3/8"

8 Star Washer, 8-32

9 Screw, Self Tapping 8-32 X 3/8"

10 Screw, 8-32 X 3/4 PNHD Philips F

11 CageClip, 8-32

12 Nut, 1/4"-20 SST Nylon Insert

13 Cap, Black

Part. No.

330000-003

409540-003

165542

160445-001

160445-002

406190

405722

700200-002

700200-003

700170-001

700170-001

409593-001

700300-015

409593-002

6

4

4

4

4

2

1

2

2

1

1

2

Qty.

1

1

Figure & Table 22-2: HUMDI-TECH ® subpanel with SDU-E

No. Description

1

2

Subpanel, VM99 Barrier

Din Rail, 10.75" Long

5

6

3

4

Grnd Lug, L-35 10-14 GA CP-8

Ground Lug, L-70 6-8 GA CP-4

Block, Din Rail Stop

Transformer 230/400V

7

8

Transformer, 230/400 500VA

Channel, Wire w/cov, 37mm X 37mm

9 Plug, 4 Prong Female

10 3 Pole Phase, Power Block

11 Fan, 24 Volt

12 Housing, 75 AMP White Connector

13 Plate, Plug Retainer

14 Main Board, VL-3

15 Display Board, VL-3

16

17

Terminal

Terminal, Ground

18

19

Terminal, End Plate

Terminal, Jumper

20 Relay Finders

21 Relay Finders, Base

22 Breaker, 4AMP Single Pole

23 Contactor, 60A

23 Contactor, 32A

24 Din Rail, 2.25" Long

Qty.

1

1

8

1

1

1

1

4

2

1

12.5"

4

1

4

1

2

2

1

1

4

1

1

1

1

2

Part No.

120801

167765-0107

409250-017

409250-018

408252-006

408986

408996-011

408999-005

409585-008

408300-002

408677-001

409585-001

409585-009

408490-001

408490-002

408252-001

408252-010

408252-005

408252-008

407900-006

407900-007

4067750-002

407001-021

407001-020

167765-0022

22

VM99-C-0400-M-0801.pdf 22 11/19/2009 9:51:55 AM

REPLACEMENT PARTS

Figure & Table 23-1: HUMIDI-TECH ® subpanel with SCR

No. Description

1 Subpanel, VM99 Barrier

2 Din Rail, 10.75" Long

3 Din Rail, 2.25 Long

4

4

Ground Lug, L-35 10-14

GA CP-8

Ground Lug, L-70 6-8

GA CP-4

5 Block, Din Rail Stop

6 Transformer 230/400V

7 Breaker, 4AM 1 Pole

8 Breaker, 1.6 AMP 1 Pole

9

Wire Channel w/cov

37mm x 37 mm

10 Contactor, 60A

10 Contactor, 32A

11 Main Board, VL-3

12 Display Board, VL-3

13 Plug, 4 Prong Female

14

3 Pole 3 Phase Power

Block

14

2 Pole 1 Phase Power

Block

15 Fan, 24 Volt

16

Housing, 75 AMP White

Connector

17 Plate, Plug Retainer

18

SSR, 480 Vac 63 AMP

1 Pole

18

SSR, 480 Vac 63 AMP

1 Pole

Qty.

1

2

1

2

Part. No.

120801

167765-0107

167765-0022

409250-017

1

1

4

2

2

2

2

1

2

5

1

12.5"

1

1

1

1

4

1

409250-018

408252-006

408996-007

406775-002

406775-001

408999-005

407001-021

407001-020

408490-001

408490-002

409585-008

408300-002

408300-001

408667-001

409585-001

409585-009

408677-002

408677-005

VM99-C-0400-M-0801.pdf 23

23

11/19/2009 9:51:56 AM

TWO-YEAR LIMITED WARRANTY

DRI-STEEM Humidifier Company (“DRI-STEEM”) 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 DRI-STEEM ships such product, whichever date is the earlier.

If any DRI-STEEM product is found to be defective in material or workmanship during the applicable warranty period, DRI-STEEM’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 DRI-STEEM’s election. DRI-STEEM shall not be liable for any costs or expenses, whether direct or indirect, associated with the installation, removal or re-installation of any defective product.

DRI-STEEM’s limited warranty shall not be effective or actionable unless there is compliance with all installation and operating instructions furnished by DRI-STEEM, or if the products have been modified or altered without the written consent of DRI-STEEM, or if such products have been subject to accident, misuse, mishandling, tampering, negligence or improper maintenance. Any warranty claim must be submitted to DRI-STEEM in writing within the stated warranty period.

DRI-STEEM’s limited warranty is made in lieu of, and DRI-STEEM disclaims all other warranties, whether express or implied, including but not limited to any IMPLIED WARRANTY OF MERCHANT-

ABILITY, 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.

DRI-STEEM SHALL NOT, UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT, INDI-

RECT, 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 DRI-STEEM has notice of the possibility of such damages.

By purchasing DRI-STEEM’s products, the purchaser agrees to the terms and conditions of this limited warranty.

Europe Office:

Bell Place, Bell Lane • Syresham, Brackley • NN13 5HP, U.K.

Phone: +44 1280 850122 • Fax: +44 1280 850124

E-Mail: [email protected]

U.S. Headquarters:

14949 Technology Drive • Eden Prairie, MN 55344

Phone: (800)328-4447 • (952) 949-2415 • Fax: (952) 949-2933

E-Mail: [email protected] • Web: www.dristeem.com

Continuous product improvement is a policy of DRI-STEEM Humidifier Company therefore, product features and specifications are subject to change without notice.

DRI-STEEM, RAPID-SORB, HUMID-TECH, VAPOR-LOGIC

3 are registered trademarks of the DRI-STEEM Humidifier Company.

Form No. VM99-C-0400-M-0901

24

Copyright © 2001 DRI-STEEM Humidifier Company

VM99-C-0400-M-0801.pdf 24 11/19/2009 9:51:56 AM