DriSteem GTS SERIES Installation, Operation And Maintenance Manual

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Page 1

READ AND SAVE THESE INSTRUCTIONS

GTS

Gas-to-Steam Humidifier

Installation, Operation, and Maintenance Manual

WARNING

Fire or explosion hazard

If the information in this manual is not followed exactly, a ﬁ re or explosion could result, causing property damage, personal injury, or death.

If you smell gas:

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from an off-site phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the ﬁ re department.

Installation and service must be performed by a qualiﬁ ed installer, service agency, or the gas supplier.

For toll-free support call DriSteem Technical Support: 1-800-328-4447

Page 2

WARNINGS AND CAUTIONS

Warnings and cautions

EUROPEAN MODELS

SAFE OPERATING INSTRUCTIONS

1. Read “Fire and explosion hazard” on the next page.

2. Set the humidistat to the lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device that automatically lights

the burner. Do not try to light the burner by hand.

5. Remove the control access panel.

6. Unplug the black power plug on the gas valve (see detail of gas valve below).

7. Wait five minutes to clear out any gas.

If you still smell gas, STOP! Follow “B” on the next page.

If you do not smell gas, go to the next step.

8. Plug the black power plug back into the gas valve.

9. Replace the control access panel.

10. Turn on electric power to the appliance.

11. Set the humidistat to desired setting.

12. If the appliance does not operate, follow the instructions below under,

“To turn off gas to appliance,” and call your service technician or gas supplier.

Important: Troubleshooting information

for this humidiﬁ er is located in the Vapor-logic Installation and Operation Manual shipped

with your humidiﬁ er. If you do not have this manual, go to www.dristeem.com to download or order a copy.

European models

The DriSteem GTS Gas-to-Steam Humidiﬁ er has been certiﬁ ed for compliance with harmonised European directives concerning gas appliances, low voltage, and emission (Gas Appliance Directive 90/396/CEE). Testing was carried out by the Canadian Standards Association; the notifying body is AFNOR in France, which is a recognized authority by the European bodies and the DTI in the United Kingdom.

Installation must conform to the requirements of the National Gas Safety (Installation & Use) Regulations.

SAFE OPERATING INSTRUCTIONS

DETAIL OF GAS VALVE

Top view

Gas valve

Gas valve power plug

To turn off gas to appliance:

1. Set the humidistat to lowest setting.

2. Turn off all electric power to the appliance if service is to be performed.

3. Remove control access panel.

4. Unplug the black power plug on the gas valve.

5. Replace control access panel.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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Warnings and cautions

WARNING

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

mc_051508_1145

WARNING

Fire or explosion hazard

A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.

Do NOT try to light the burner by hand.

B. Before operating, smell all around the appliance area for gas. Be sure to smell next to the ﬂ oor because gas can be

heavier than air and settle on the ﬂ oor.

If you smell gas:

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from an off-site phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the ﬁ re department.

C. Do not use this appliance if any part has been under water. Immediately call a qualiﬁ ed gas appliance service

technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water.

CAUTION

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

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. Installation must be code approved. Improper installation can cause property damage, severe personal injury, or death as a result of electric shock, burns, or ﬁ re.

DriSteem North America: 800-328-4447 Europe: +3211823595

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.

Technical Support:

Continued

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

iii

Page 4

Warnings and cautions

WARNING

Carbon monoxide, ﬁ re, explosion, and electrical shock hazards

Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poisoning, ﬁ re, explosion, electrical shock, and other hazardous conditions. These hazardous conditions could cause personal injury, property damage, or death. To prevent hazardous conditions, read all warnings; lock all power disconnect switches in the OFF position before removing any access panels; and consult a qualiﬁ ed installer, service agency, local gas supplier, or your distributor or branch for information or assistance. The qualiﬁ ed installer or agency must use only factory authorized and listed kits or accessories when modifying this product.

• Inspect humidiﬁ er and accessories upon arrival for damaged, missing, or improper parts. If there is a problem, call DriSteem.

• Application of this humidiﬁ er should have special attention given to vent sizing and material, gas input rate, and unit sizing. Improper installation or misapplication of the humidiﬁ er can cause excessive servicing or permanent component failure.

• When working on equipment, observe precautions in literature, tags, and labels attached to or shipped with the unit and observe other safety precautions that may apply. Wear safety glasses and work gloves. Have a ﬁ re extinguisher available during start-up, adjustment procedures, and service calls.

• Do not lift humidiﬁ er by gas controls, gas manifold, ﬁ re box, or shroud.

• Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve to the appliance before shutting off the electrical supply.

• The evaporating chamber is designed as a nonpressurized vessel. DO NOT restrict piping where steam exits the humidiﬁ er. Install drain piping and piping that connects the evaporating chamber to the dispersion assembly only as described in this manual. DO NOT install a shut-off valve on the piping connecting the evaporating chamber to the steam outlet.

• Check the humidiﬁ er name plate for the gas type indicated (natural gas or propane gas). Supply the humidiﬁ er only with the gas type indicated, or burner failure will result. To convert the humidiﬁ er to a different gas type, contact DriSteem Technical Support or your local DriSteem Representative/Distributor.

• Installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, must conform to:

– In the United States: The National Fuel Gas Code, ANSI Z223.1 (latest edition).

– In Canada: Local plumbing or waste water codes and other applicable codes and with the current code CAN/

CGA-B149.1, “Installation Code for Natural Gas Burning Appliances and Equipment,” or CAN/CGA-B149.2, “Installation Code for Propane Burning Appliances and Equipment.”

– In Europe: The National Gas Safety (Installation & Use) Regulations.

• Do not install in potentially explosive or ﬂ ammable atmospheres laden with grain dust, sawdust, or similar airborne materials.

• Installation of humidiﬁ er in high humidity or salt water atmospheres causes accelerated corrosion, reducing the normal life-span of the unit.

• To prevent premature heat exchanger failure, do not locate any gas-ﬁ red unit in areas where chlorinated, halogenated, or acid vapors are present in the atmosphere.

• Locate the humidiﬁ er in an area clear of combustible materials, gasoline, and other ﬂ ammable vapors and liquids.

Continued

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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Warnings and cautions

WARNING

Carbon monoxide, ﬁ re, explosion, and electrical shock hazards (continued)

• With the exception of sealed combustion units, do not locate units in tightly sealed rooms or small compartments without provision for adequate combustion air and venting. Room air combustion must be supplied through a minimum of two permanent openings in the wall, with at least one near the bottom. See "Combustion and ventilation air" for additional information.

• Remove all shipping brackets and materials before operating the humidiﬁ er.

• Do not locate humidiﬁ er in a negative pressure space. Combustion products could be suctioned from the venting.

• Humidiﬁ er ﬂ ue gases must be vented to the outside atmosphere.

• Power supply disconnect switch must be in the off position while making wiring connections to prevent electrical shock and equipment damage. All units must be wired in strict accordance with the wiring diagrams furnished with this unit.

• Turn off all gas while installing the gas piping and manual shutoff valve for the humidiﬁ er.

• The appliance and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures exceeding 0.5 psig (3.5 kPa).

Hot surfaces and hot water

This steam humidiﬁ cation system has extremely hot surfaces. Water in tank, steam tubing, 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.

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.

Follow the shutdown procedure on Page 54 before performing service or maintenance procedures on any part of the system.

CAUTION

Hot discharge water

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

The DriSteem Drane-kooler supply to the Drane-kooler 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.

™

water tempering device needs fresh make-up water in order to function properly. Make sure the water

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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Table of contents

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

EUROPEAN MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

SAFE OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

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

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

Models, capacities, electrical specifications, and weights . . . . . . . . . . . . 4

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

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

Location and clearance recommendations . . . . . . . . . . . . . . . . . . . . . . . 6

Outdoor Enclosure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Piping: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Supply water and drain overflow connections . . . . . . . . . . . . . . . . . 18

Supply water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Combustion and ventilation air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Room air combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Sealed combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Vertical and horizontal venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Guidelines (stack connection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Special horizontal venting requirements . . . . . . . . . . . . . . . . . . . . . 30

Dispersion: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Selecting a location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Interconnecting piping requirements . . . . . . . . . . . . . . . . . . . . . . . . 32

Steam outlet connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Drip tee installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Single tube and multiple tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Rapid-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Area-type fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Ultra-sorb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

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Table of contents

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Start-up checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Start-up commissioning checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Inspection recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Burner assemblies and heat exchanger tubes . . . . . . . . . . . . . . . . . 56

Maintenance frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Burner maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Tap/softened water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Water quality recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Adjusting skim duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Cool down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

RO/DI water option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

RO/DI water quality recommendations . . . . . . . . . . . . . . . . . . . . . 61

Cool down procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

GTS humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Fill, drain, and blocked flue sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Electrical parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Outdoor Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

EUROPEAN MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Authorized countries of destination . . . . . . . . . . . . . . . . . . . . . . . . 72

Appliance category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

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: – GTS – Ultra-sorb

• Installation, Operation, and Maintenance

– Ultra-sorb – Vapor-logic® (includes sensor placement

• DriSteem Design Guide (includes steam

In DriCalc:

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

DriCalc includes a comprehensive library of installation guide documents, including:

• Rapid-sorb installation instructions for vertical

• Recommended dispersion placement within a

• Recommended sensor placement

manuals:

recommendations and troubleshooting information)

loss tables and general humidiﬁ cation information)

airﬂ ows

duct or air handler

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.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 8

PRODUCT OVERVIEW

Product overview

GTS humidiﬁ ers burn either natural or propane gas to heat ﬁ ll water into steam for humidiﬁ cation. The unit has from one to four burners that ﬁ re into a heat exchanger submerged in a tank of water. When there is a call for humidity, the burners ﬁ re and generate steam until the call for humidity ends.

TAP/SOFTENED WATE

In tap/softened water GTS humidiﬁ ers, a conductivity probe (see Figure 3-2) monitors water level, requiring water conductivity to be at least 100 μS/cm to operate properly. Therefore, GTS tap/softened water models do not operate

ith RO/DI water (water that has been treated using reverse osmosis or deionized water). For operation with RO/DI water, see “RO/DI water option” on the next page

Note: GTS humidiﬁ ers for tap/softened water can be converted in the ﬁ eld

ith the RO/DI water option

FIGURE 2-1: GTS HUMIDIFIER, TAP/SOFTENED WATER

Duct dispersion option shown: Ultra-sorb Model LV

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.

< 5 ppm

< 25 ppm

< 50 ppm

Steam hose or tubing

Water level probe

Blower

Gas valve

Steam outlet

Heat exchanger

Control componentsFlue box

Supply water connection

Drain valve

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.

OM-1247_ab mc_071912_1545

7 to 8

6.5 to 8.5

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 9

Product overview

PRODUCT OVERVIEW

RO/DI WATER OPTION

GTS humidiﬁ ers with the RO/DI water option control water level using a ﬂ oat valve (see Figure 3-3). These humidiﬁ ers produce chemical-free steam and provide accurate, reliable humidiﬁ cation control. These humidiﬁ ers are virtually maintenance-free and require very little or no downtime.

Note: GTS humidiﬁ ers with the RO/DI water option can be converted in the

ﬁ eld for use with tap/softened water.

FIGURE 3-2: GTS HUMIDIFIER, RO/DI WATER OPTION

Float for water ﬁ ll valve

Supply water line

Flue connection

Blower

Gas valve

Steam outlet

Redundant low water cutoff sensor

Float-operated low water cutoff

FIGURE 3-1: WATER LEVEL CONTROL FOR TAP/SOFTENED WATER

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. The controller disables the burner if the 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.

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

OM-1248

Air gap

Open drain

Note: Dashed lines indicate supplied by installer

Drain piping

Overﬂ ow outlet

Supply water connection

Drain valve

Fill valve

Float rod

VLC-OM-026

Humidiﬁ ers with the RO/DI water option control water level using a ﬂ oat valve. A low-water cutoff switch is used as a low-water safety.

Float ball

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 10

SPECIFICATIONS

Models, capacities, electrical speciﬁ cations, and weights

Table 4-1: GTS models, capacities, electrical specifications, and weights, North American models

Maximum

GTS

model

GTS-100 75 34 100 29 2.76 9 34.1 48 181.7 700 320 375 170 800 365 500 230 1.8 2.8

GTS-200 150 68 200 59 5.52 18 68.1 48 181.7 700 320 375 170 800 365 500 230 1.8 2.8

GTS-300 225 102 300 88 8.28 27 102.2 52 196.8 850 385 450 205 1000 455 600 270 3.0 4.0

GTS-400 300 136 400 117 11.04 36 136.3 52 196.8 850 385 450 205 1000 455 600 270 3.0 4.0

GTS-500 375 170 500 147 13.80 45 170.3 76 287.7 1100 500 600 270 1450 660 950 430 4.5 5.5

GTS-600 450 204 600 176 16.56 54 204.4 76 287.7 1100 500 600 270 1450 660 950 430 4.5 5.5

GTS-700 525 238 700 205 19.32 63 238.5 89 336.9 1400 635 700 320 1750 795 1050 475 6.0 7.0

GTS-800 600 272 800 234 22.08 72 272.5 89 336.9 1400 635 700 320 1750 795 1050 475 6.0 7.0

* Add 15 full load amps for Outdoor Enclosure heater load on all GTS models, add 1 full load amp for an Outdoor Enclosure without heaters. ** Add 10% to account for skim and automatic drain/ﬂ ush features if utilized (tap/softened water units only).

CAPACITY NOTES

steam

capacity

lbs/hr kg/h MBh kW m

Input

Water usage at maximum

gals/hrlitres/

capacity**

Tank

volume

gals litres lbs kg lbs kg lbs kg lbs kg

Operating

• At sea level, approximately 152 Btu are required to raise the temperature of one pound of water from 60 °F to 212 °F. (At sea level, approximately

GTS GTS with Outdoor Enclosure

weight

Shipping

weight

Operating

weight

Important: See Pages 70 and 71 for

additional European model speciﬁ cations and capacity notes.

Shipping

weight

Full load

amps*

120V

60 Hz

352 kJ are required to raise the temperature of one kilogram of water from 16 °C to 100 °C.)

• An additional 970 Btu are required to change the state of one pound of 212 °F water to vapor. (An additional 2257 kJ are required to change the state of one kilogram of 100 °C water to vapor.)

• Another factor to consider is condensation steam loss from piping. See Table 32-2.

For more detailed information about condensation steam loss, see the DriSteem Design Guide, or see DriCalc, DriSteem’s free sizing and selection software, available at www. dristeem.com.

LP GAS

All models operate at rated input

HIGH ALTITUDE

An input derate exists when operating units at a high altitude. See Table 4-2 for high altitude derate information.

Table 4-2: High altitude derate

Altitude

feet meters

0–2000 0–610 0

2001–2500 610–765 2*

2501–3000 765–915 4*

3001–3500 915–1065 6*

3501–4000 1065–1220 8*

4001–4500 1220–1370 10

4501–5000 1370–1525 12

5001–5500 1525–1675 14

5501–6000 1675–1830 16

6001–6500 1830–1980 18

6501–7000 1980–2135 20

7001–7500 2135–2285 22

7501–8000 2285–2440 24

* GTS-400 models are derated 10% from

2001 through 4500 ft in Canada.

Input

derate %

230V

50 Hz

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 11

Dimensions

FIGURE 5-1: DIMENSIONS

SPECIFICATIONS

Side viewFront viewTop view

Table 5-1: Dimensions

OM-1203

Description

GTS-100 GTS-200

inches mm inches mm inches mm inches mm

GTS-300 GTS-400

GTS-500 GTS-600

5" (127 mm)

GTS-700 GTS-800

A Overall length 54.35 1380 54.35 1380 54.35 1380 54.35 1380

B Overall width 26.38 670 32.38 822 42.38 1076 48.38 1229

C Shroud height 41.00 1040 41.00 1040 41.00 1040 41.00 1040

Flue position

E 9.13 232 13.13 334 16.63 422 19.13 486

F Flue diameter 5.00 127 7.00 178 8.00 203 10.00 254

Steam outlet position

H 11.63 295 11.63 295 11.63 295 11.63 295

Fill valve connection position

K 19.38 492 19.38 492 19.38 492 19.38 492

Drain position

M 8.00 203 8.00 203 8.00 203 8.00 203

15.50 394 14.75 375 14.95 375 14.00 356

13.88 353 20.38 518 29.13 740 35.00 889

13.50 343 13.50 343 13.50 343 13.50 343

8.25 210 8.25 210 8.25 210 8.25 210

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 12

INSTALLATION

Location and clearance recommendations

FINDING A LOCATION

• Provide a level, solid foundation for the humidiﬁ er.

WARNING

• Locate the humidiﬁ er as near as possible to a chimney or outside wall so that the ﬂ ue pipe from the humidiﬁ er is short and direct.

• Locate the unit so it and its electrical components are protected from water during humidiﬁ er operation and service.

• Install the humidiﬁ er in a location away (and protected) from drafts. If installed in a separate room, follow the instructions concerning combustion and ventilation air.

• Locate the humidiﬁ er in an area where leakage from the tank or its connections will not result in damage to the adjacent structure or to lower ﬂ oors of the structure. When such locations cannot be avoided, install a suitable drain pan (adequately drained) under the humidiﬁ er. The pan must not restrict combustion airﬂ ow.

• If located in an insulated space, keep the humidiﬁ er free and clear of insulating materials. Insulating material can be combustible. Inspect the humidiﬁ er area when the humidiﬁ er is installed or when insulation is added.

FIGURE 6-1: GTS CLEARANCE RECOMMENDATIONS

18" (457 mm)

Installation requirements

The humidiﬁ er must be installed by a qualiﬁ ed technician and meet the requirements of all governing codes. Failure to follow these instructions could cause severe bodily injury or death.

OM-1222

36" (914 mm)

30" (762 mm)

Note: DriSteem recommends a minimum of 1" (25 mm) clearance

between hot surfaces and combustible walls.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 13

INSTALLATION

Outdoor Enclosure:

OUTDOOR ENCLOSURE MOUNTING OPTION

Mounting

The Outdoor Enclosure option is used when the GTS is installed outdoors. The following information is not intended to supersede any requirements of federal, state, or governing codes having jurisdiction; prior to locating the unit, authorities having jurisdiction should be consulted.

FIGURE 7-1: OUTDOOR ENCLOSURE TYPICAL INSTALLATION OVERVIEW

Roof surface

Steam piping

GTS humidiﬁ er in Outdoor Enclosure

OM-1238

Electrical connections

Flue*

Curb

Drain piping

Water piping

* DriSteem recommends installing a drip tee directly after the factory supplied vent connection. Vertical section of ﬂ ue must be at least 5' or meet all

governing codes, whichever is greater. DriSteem recommends installing a high wind vent cap on all GTS humidiﬁ ers.

Vapor-logic keypad shown with optional cable length. Keypad ships standard with 5' (1.5 m) of cable

Gas piping

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 14

INSTALLATION

Outdoor Enclosure: Mounting

LIFTING

The GTS Outdoor Enclosure must be lifted from the bottom base in a fashion that holds it level and keeps it from tipping, falling, or twisting. If the unit is severely twisted during handling, permanent damage can occur. It is the installer’s responsibility to verify the handling equipment’s capability to safely handle the unit.

Lift the Outdoor Enclosure by using special lifting lug hooks installed on the unit. All lifting operations must be accomplished with a load spreader of sufﬁ cient width to ensure that the lifting cables clear the side of the unit.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 15

Outdoor Enclosure: Mounting

LOCATION

• The GTS Outdoor Enclosure must be level and located so there is enough clearance for opening the access panels.

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

• Do not locate unit in areas where the surrounding air has high levels of particulates, such as some industrial parks or areas near highways.

• Locate unit so air intakes are not too close to exhaust fan outlets, gasoline storage, or other contaminants that potentially 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 the roof, the air intakes must be a minimum of 14" (360 mm) off the roof to prevent intake of snow or splashed rain. The unit should be located so prevailing winds do not blow into the air intakes.

• An emergency drain is provided. In case of any water leak, water drains onto the roof through this emergency drain.

INSTALLATION

• A keypad with standard 5' (1.5 m) cable ships mounted to the subpanel in the GTS Outdoor Enclosure. The keypad must not come in contact with the strip heaters or block the intake ventilation hood.

• If constant monitoring of the unit is desired, or if the unit is located in a severe climate, install a remote mount keypad. Additional cable lengths up to 500' (152 m) are available as an option for this mounting conﬁ guration.

• Curbs (optional) are shipped knocked down for ease of transporting to the roof. Curbs are manufactured of 14-gauge galvanized steel and shipped with all hardware for bolt-together assembly. All holes are matched before leaving the factory. Curb is to be a minimum of 14" (360 mm) high. A closed-cell curb gasket with adhesive on one side is supplied with hardware. An installation drawing also is included. To prevent moisture from leaking into the building from either driving rain or melting snow, install the gasket between the top of the curb and the base surface of the unit.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 16

INSTALLATION

Outdoor Enclosure: Mounting

BEFORE YOU BEGIN

• Prior to installing the unit, remove all packaging.

• During the transit, unloading, and setting of the unit, bolts and nuts may become loose. Check that all nuts are tightened as required.

• There are three knockouts located on the right and left side of the enclosure. DriSteem recommends running electrical power into the enclosure at these knockouts.

• When pad-mounted or when the pipe chase cannot be used, the supply water and drain piping can be run through the knockouts, although preferably on the opposite side from the gas and electric.

• When unit is mounted on an outdoor curb, there must be a gasket between the top of the curb and the base surface of the unit to prevent moisture from leaking into the building from either driving rain or melting snow.

• The Outdoor Enclosure has two available steam distribution conﬁ gurations. The standard conﬁ guration has a steam outlet at the back of the Outdoor Enclosure for connecting to steam dispersion unit piping. The optional internal steam distribution conﬁ guration routes steam within the Outdoor Enclosure and down through the pipe chase into a building. See Figures 11-1 and 12-1.

Important: A pipe chase is located inside the burner section of the

enclosure. DriSteem recommends using this pipe chase for both the supply water piping and drain piping. Use insulation to completely ﬁ ll the area around the pipes to maintain proper enclosure pressure and protect unit components from elevated moisture levels within building; insulation must serve as an effective vapor barrier. Use the provided pipe chase cover to seal off the pipe chase. Cut necessary holes and seal after installation.

• The heater package has two thermostat-controlled heaters: one strip heater is located in the control section, and one strip heater is located in the burner section to keep the enclosure at a constant minimum temperature. Once the humidiﬁ er tank is full and up to temperature, the tank will keep the enclosure at an appropriate temperature. The heaters will turn off.

• See “Wiring” on Page 15 and “Piping” beginning on Page 16 for directions on installing electrical, gas, ﬂ ue, drain, and water connections. A separate electrical service connection for the outdoor GTS is recommended. Insulation and/or heat taping of water piping is recommended.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 17

Outdoor Enclosure: Mounting

FIGURE 11-1: OUTDOOR ENCLOSURE INSTALLATION DETAIL

Normally closed ﬁ ll valve (by factory)

Supply water piping (by installer) (See Note 2)

Open to drain

Vacuum breaker (by installer)

120 V (230 V in

Europe) from unit

disconnect or other

source (See Note 1)

Normally closed (fail

closed) min 3/8"

electric valve

(by installer)

Domestic water, 80 psig (582 kPa) maximum

Open drain (See Note 4)

GTS humidiﬁ er in Outdoor Enclosure installed on rooftop

Drain line, min. 1½" (See Note 3)

Optional water seal (P-trap) drain line, min. 1½" (DN40) (See Note 3)

Normally open (fail open) min 1/2" electric valve (by installer)

Open drain (See Note 4)

Roof decking

OM-4045

Disconnect (by installer); see Detail A

120 V supply (230 V in Europe)

120 V (230 V in Europe)

Disconnect

Heated building interior

INSTALLATION

Detail A

box

To valves (by installer) (See Note 1)

To GTS humidiﬁ er

Piping notes:

1. Insulate supply water piping to avoid dripping from condensation. To ensure that water does not remain in the ﬁ ll line and freeze if there is a loss of power, DriSteem recommends ﬁ eld installing additional valves upstream of the ﬁ ll valve in a conditioned space. Power these valves on the same circuit as the GTS; if the power goes off, water drains out of the ﬁ ll line to prevent freezing (see above). Supply power for these valves from the same circuit that supplies the GTS.

2. Ensure that water lines are protected from freezing conditions.

• Install heat tracing and insulation on ﬁ ll piping inside the Outdoor Enclosure.

• In extreme or critical applications in which the unlikely event of a water leak could cause severe damage, DriSteem recommends a thermostat

with a remote sensor on the ﬁ ll line to cut power to the GTS and safety valves to stop ﬁ ll water to the GTS and drain the ﬁ ll piping when the temperature is below freezing.

3. DriSteem recommends copper or iron drain piping for Outdoor Enclosures. On a loss of power the tank water will drain, but not be cooled by the Drane-kooler because of the ﬁ eld supplied safety shut-off valves. If it is critical to keep the Drane-kooler functional in the case of a power loss, disconnect the Drane-kooler and relocate it down inside the conditioned space of the building. Pipe the supply water for the Drane-kooler before the safety shut-off valves.

4. If copper or iron piping is used for both the ﬁ ll and drain piping, these drains may be tied together. Locate 1" 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.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 18

INSTALLATION

Outdoor Enclosure: Mounting

FIGURE 12-1: GTS OUTDOOR ENCLOSURE WITH STANDARD OR OPTIONAL STEAM OUTLET, ELEVATION VIEW

Standard steam outlet Optional steam outlet

OM-1228M

Ventilation fans

Combustion air intake

1½" (38 mm) knockouts 4" (102 mm) o.c.

Pipe chase

Emergency drain

Flue piping (by installer)

Steam outlet (See Note 1)

GTS humidiﬁ er

Power block

OM-1227M

Ventilation fans

Combustion air intake

1½" (38 mm) knockouts 4" (102 mm) o.c.

Pipe chase

Emergency drain

Flue piping (by others)

Steam outlet (See Note 1)

GTS humidiﬁ er

Power block

Notes:

1. The Outdoor Enclosure has two available steam distribution conﬁ gurations. The standard conﬁ guration has a steam outlet at the back of the Outdoor Enclosure for connecting to steam dispersion unit piping. The optional internal steam distribution conﬁ guration routes steam within the Outdoor Enclosure and down through the enclosure pipe chase into a building.

2. There are three knockouts located on the right and left side of the enclosure. Run the electrical power and gas piping into the enclosure at these knockouts.

3. Piping from the GTS unit to the steam outlet is stainless steel pipe. Piping from the steam outlet to the dispersion assembly is provided by the installer. Choose interconnecting steam piping material that is appropriate for the application (e.g., for high-purity steam applications, consider using stainless steel interconnecting steam tubing). See Table 18-1 for steam outlet sizes.

4. The GTS housed in an Outdoor Enclosure will operate properly in operating temperature of –40 °F to 122 °F (–40 °C to 50 °C).

5. Install external ﬂ ue piping shall be provided by installers and ﬁ eld installed. The ﬂ ue of the Outdoor Enclosure exits out the left side of the unit and a vertical stack must be constructed. The stack must be a minimum of 5–10 feet (1.5–3.0 m) above the top of the roof. However, the exact height varies depending on unit size, climate, etc. Governing codes prevail. A UL or UL/CSA (or equivalent) listed cap must be used and a drip tee included. DriSteem recommends installing a high-wind vent cap on all GTS humidiﬁ ers.

Table 12-1: Outdoor Enclosure dimensions

Description

inches mm inches mm inches mm inches mm

A Enclosure height 54.63 1388 54.63 1388 54.63 1388 54.63 1388

B Enclosure width 26.00 660 32.00 813 42.00 1067 48.00 1219

C Enclosure length 57.25 1454 57.25 1454 57.25 1454 57.25 1454

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

GTS-100 GTS-200

GTS-300 GTS-400

GTS-500 GTS-600

GTS-700 GTS-800

Page 19

INSTALLATION

Outdoor Enclosure: Mounting

FIGURE 13-1: OUTDOOR ENCLOSURE TOP VIEW FIGURE 13-2: OUTDOOR ENCLOSURE

MOUNTED ON A CURB

Exit for standard steam outlet

OM-7432

GTS humidiﬁ er

Exit for optional steam outlet (through pipe chase)

Flue (by installer)

Burner section heater

Access panel door

Table 13-1: Outdoor Enclosure top view dimensions

GTS-100

Description

GTS-200

inches mm inches mm inches mm inches mm

GTS-300 GTS-400

Control panel heater

Access panel door

Intake ventilation fans

GTS-500 GTS-600

OM-7431

14"

(356 mm)

FIGURE 13-3: OUTDOOR ENCLOSURE MOUNTED FLUSH

OM-7430

GTS-700 GTS-800

T Enclosure width 26.00 660 32.00 813 42.00 1067 48.00 1219

Pipe chase position

V 3.00 76 3.00 76 3.00 76 3.00 76

Pipe chase size

X 11.00 279 11.00 279 11.00 279 11.00 279

Steam pipe position

Z 21.00 533 27.00 686 37.00 940 43.00 109

3.00 76 3.00 76 3.00 76 3.00 76

16.00 406 16.00 406 16.00 406 16.00 406

14.12 359 20.12 511 30.12 765 36.12 917

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 20

INSTALLATION

Outdoor Enclosure: Operation

SEQUENCE OF OPERATION

• Power is applied to the Outdoor Enclosure.

• If the ambient temperature in the enclosure is below

50 °F (10 °C), the strip heaters are powered up. The strip heaters remain

on until the enclosure reaches 50 °F (10 °C) to ensure that the temperature inside the enclosure does not drop below the freezing point.

• When there is no call for humidity, an aquastat maintains tank temperature

at the factory default of 70 °F (21 °C). This temperature can be reset in the ﬁ eld to be from 40-180 °F (4-82 °C).

• When the ambient temperature in the enclosure reaches 85 °F (29 °C), two

ventilation fans turn on to cool the electronic components. A high limit is also provided to power down the GTS if the enclosure temperature reaches 150 °F (66 °C). In a high limit situation, the ventilation fans continue to run and once the enclosure temperature falls below 130 °F (54 °C), the GTS automatically resumes normal operation.

• A normally open drain valve is provided on the GTS Outdoor Enclosure to

drain the tank in the event of a power loss.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 21

Wiring

INSTALLATION

WARNING

Grounding

Installation must meet the requirements of governing codes or, in the absence of governing codes, in accordance with the National Electrical Code, ANSI/NFPA 70, or Canadian Electrical Code, CSA C22.1, or IEE wiring regulations (BS7671). The electrical subpanel must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. This ground can consist of electrical wire or conduit approved for electrical ground when installed in accordance with existing electrical codes. Do not use gas piping as an electrical ground.

• GTS humidiﬁ ers must be supplied with 120 Vac, 60 Hz (North American models) or 230 Vac, 50 Hz (European models) separately fused electrical service. The GTS humidiﬁ er is equipped with a transformer to step down the voltage to 24 Vac control voltage.

• When installed, the GTS humidiﬁ er must be electrically grounded in accordance with governing codes or, in the absence of governing codes, in accordance with the National Electrical Code, ANSI/NFPA 70; or Canadian Electrical Code, CSA C22.1; or IEE wiring regulations (BS7671).

In North America, the electrical conductors shall be Type MTW (105 °C)

AWG #14 (2.5 mm2) wire for 120 V line voltage , with BLACK WIRE for HOT, WHITE WIRE for NEUTRAL, GREEN AND YELLOW WIRE for GROUND. Units with Outdoor Enclosure must use AWG #12 (4 mm2) for 120 V line voltage. Use #18 gauge (1 mm2) for control wiring.

WARNING

Fire hazard

Do not connect aluminum wire between disconnect switch and humidiﬁ er. Use only copper wire. Failure to follow these instructions could cause a ﬁ re, resulting in severe bodily injury, death, or signiﬁ cant property damage.

In Europe, the electrical conductors shall be Type MTW (105 °C) 2.5 mm2

wire for line voltage (230V), with BLACK WIRE for LINE, BLUE WIRE for NEUTRAL, GREEN AND YELLOW WIRE for GROUND, and 2.5 mm2 wire for control wiring.

• All electrical components and wiring must be protected from mechanical damage and water. The control system requires an earth ground for proper operation.

• The GTS humidiﬁ er is adjusted for correct performance. Only a qualiﬁ ed gas appliance technician may alter throttle setting.

• Check the electric current characteristics and capacity requirements against the nameplate. All wiring must be in accordance with all governing codes and with the GTS wiring diagrams located inside the control cabinet. See the electrical speciﬁ cations in Table 4-1 (North America) and Table 71-1 (Europe).

• Refer to the Vapor-logic Installation and Operation Manual for additional information on the controller furnished with this GTS humidiﬁ er.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 22

INSTALLATION

Piping: Tap/softened water

FIGURE 16-1: GTS FIELD PIPING OVERVIEW, TAP/SOFTENED WATER

Optional condensate return piping from dispersion

unit; 3/4" pipe thread (DN20) ﬁ tting at humidiﬁ er

Shock arrester recommended to reduce

water hammer, by installer

Flue size per governing codes. Do not reduce.

Steam hose or tubing

Install level

Supply water line; water pressure range

25 to 80 psi (172 to 582 kPa); water

conductivity minimum 100 μS/cm

Flue connection

Offset humidiﬁ er from ﬂ oor drain to prevent

ﬂ ash steam from rising into the humidiﬁ er

1½" NPT (DN40) drain piping must be

rated for 212 °F (100 °C) (by installer)

1" (25 mm) air gap

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.

• Dashed lines indicate provided by installer.

• Humidiﬁ er ﬂ ue gases must be vented to the outside atmosphere.

• Supply water inlet is more than 1" (25 mm) above skim/overﬂ ow port, eliminating the possibility of backﬂ ow or siphoning from tank. No additional backﬂ ow prevention is required; however, governing codes prevail.

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

• See the next page for recommended supply water piping for RO/DI water models.

Air vent tube

6" (150 mm) minimum vent height

Air vent height must be equal to or greater than dimension H (see Table 16-1)

Install level

Gas inlet connection

Open drain required. See ﬁ rst note below.

OM-1208b

Table 16-1: Height (H) required to overcome GTS internal pressure (H)

GTS model

(tap/softened

water)

100, 200 35 889

300, 400, 500,

600, 700, 800

Dimension H in drawing above = height required to

overcome humidiﬁ er internal pressure

inches mm

41 1041

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 23

RO/DI water option Piping:

FIGURE 17-1: GTS FIELD PIPING OVERVIEW, RO/DI WATER OPTION

Steam hose or tubing

INSTALLATION

Optional condensate return piping from dispersion unit; 3/4" pipe thread (DN20) ﬁ tting at humidiﬁ er

Flue size per governing codes. Do not reduce.

Supply water line; water pressure range 25 psi to 80 psi (172 kPa to 582 kPa); ﬁ rst 3' (1 m) of supply line must be rated for 212 °F (100 °C)

Flue connection

Offset humidiﬁ er from ﬂ oor drain to prevent ﬂ ash steam from rising into the humidiﬁ er

1½" (DN40) drain piping must be rated for 212 °F (100 °C)

1" (25 mm) air gap

Install level

Gas inlet connection

Open drain required. See ﬁ rst note below.

Air vent tube

If water piping to humidiﬁ er is nonmetallic, we recommend a 2" (50 mm) water seal in the supply water line to isolate steam during RO/DI water system maintenance.

Inlet strainer by installer

6" (150 mm) minimum vent height

OM-1223

Air vent tube height must be equal to or greater than dimension H (see Table 17-1)

Notes:

• Dashed lines indicate provided by installer.

• Humidiﬁ er ﬂ ue gases must be vented to the outside atmosphere.

• Supply water inlet is more than 1" (25 mm) above overﬂ ow port, eliminating the possibility of backﬂ ow or siphoning from tank. No additional backﬂ ow prevention is required; however, governing codes prevail.

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

• In order to minimize RO/DI water use, disconnect factory piping to the water tempering device and pipe directly to tap water.

• See the previous page for recommended supply water piping for tap/ softened water models.

Table 17-1: Height (H) required to overcome GTS internal pressure

GTS model

(RO/DI water

option)

100, 200 35 889

300, 400, 500,

600, 700, 800

Dimension H in drawing above = height required to

overcome humidiﬁ er internal pressure

inches mm

41 1041

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 24

INSTALLATION

Supply water and drain overflow connections Piping:

Regardless of the type of water used, the following general instructions MUST be followed:

• Make union connections at the humidiﬁ er on the make-up water supply and drain/overﬂ ow lines.

• Provide a shutoff valve in the supply water line to isolate the humidiﬁ er from the water system while servicing.

• Shock arrester, provided by installer, is recommended to reduce water hammer.

• A 1" (25 mm) opening is provided in the humidiﬁ er tank to accommodate skim and/or overﬂ ow protection.

Note: Follow governing code requirements regarding size of drain pipe.

• Use insulating unions or bushings to make connections between copper and other dissimilar metal ﬁ ttings, such as galvanized steel. These insulating ﬁ ttings are required to minimize electrolytic corrosion, which results from the direct connection of dissimilar metals in a water system.

• Before beginning ignition sequence of the humidiﬁ er at a new installation, make sure the humidiﬁ er tank is full of water and the water is free to ﬂ ow into the tank.

• If planning to use heated supply water, disconnect the supply water line to the water tempering device at the ﬁ ll manifold and reconnect it to a cold water supply. This will ensure that the water tempering device operates properly.

Table 18-1: Connection sizes

Description

Gas supply

Sealed combustion piping (optional) 4 100 4 100 4 100 4 100

Flue vent 5 125 7 180 8 200 10 250

Supply water to ﬁ ll valve and tempering device*

Drain

Steam outlet**

Condensate return (recommended)

Notes:

To minimize RO/DI water use, disconnect factory piping to the water tempering device and pipe directly to tap water.

For pipe thread steam outlet options, see DriCalc, DriSteem’s free sizing and selection software, available at www. dristeem.com.

• If planning to use heated supply water, disconnect the water line to the water tempering device at the ﬁ ll manifold, and reconnect it to a cold water supply. This will ensure that the water tempering device operates properly.

GTS-100 and GTS-200 GTS-300 and GTS-400 GTS-500 and GTS-600 GTS-700 and GTS-800

inches DN inches DN inches DN inches DN

1/2

(pipe thread)

3/8

(pipe thread)

1½

(pipe thread)

(hose)

3/4

(pipe thread)

3/8

(pipe thread)

1½

(pipe thread)

(ﬂ ange)

3/4

(pipe thread)

3/8

(pipe thread)

1½

(pipe thread)

(ﬂ ange)

3/4

(pipe thread)

100

1¼

(pipe thread)

3/8

(pipe thread)

1½

(pipe thread)

(ﬂ ange)

3/4

(pipe thread)

100

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 25

Supply water Piping:

SUPPLY WATER PIPING GENERAL INSTRUCTIONS

The GTS humidiﬁ er has a 1" (25 mm) internal air gap to prevent back siphoning into a potable water system. However, some governing codes may require additional protection such as a vacuum breaker or backﬂ ow preventer.

The supply water pressure range must be 25 psi to 80 psi (172 kPa to 552 kPa). When nonmetallic water piping is used, it must be rated to withstand 212 °F (100 °C) or greater temperature. If not, the ﬁ nal three feet of piping connected to the humidiﬁ er should be metallic and should not be insulated.

TAP/SOFTENED SUPPLY WATER PIPING

The supply water assembly has a 3/8" pipe thread (DN10) connection. Since the primary component of the supply water assembly is a solenoid valve, there may be noise issues that surface during a ﬁ ll cycle.

During a ﬁ ll cycle, the supply water drops the water temperature in the tank and may collapse the steam, which can cause a low rolling sound. To diminish this, adjust the factory-supplied needle valve (installed prior to the ﬁ ll valve) to decrease the water ﬁ ll rate, and/or use hot supply water.

INSTALLATION

In cases where water hammer occurs when the ﬁ ll solenoid closes, a shock arrester is recommended. Reducing the supply water pressure (minimum 25 psi [172 kPa]) or using ﬂ exible tubing (rated for 212 °F [100 °C] minimum continuous operating temperature) may diminish the noise, but installing a shock arrester is the best solution.

The minimum water conductivity for the GTS tap/softened water model is 100 μS/cm.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 26

INSTALLATION

Supply water Piping:

SUPPLY WATER PIPING, RO/DI WATER OPTION

GTS humidiﬁ ers with the RO/DI water option control water level with a ﬂ oat valve, and have a 3/8" pipe thread (DN10) connection. For models with the end-of-season drain option, a solenoid valve is installed prior to the ﬂ oat valve. The end-of-season feature shuts off the supply water and drains the tank when there is no demand for humidity for 72 hours. (This length of time is a default setting and is user-adjustable. See the Vapor-logic Installation and Operation Manual for more information.)

When using nonmetallic tubing for supply water, it must be rated for 212 °F (100 °C) minimum continuous operating temperature. DriSteem recommends installing a 3' (1 m) piece of noninsulated stainless steel pipe directly off the humidiﬁ er prior to connecting to the nonmetallic tubing. When using nonmetallic tubing, DriSteem recommends the installer place a 2" (50 mm) water seal/loop in the supply water line to isolate steam during RO/DI water system maintenance. See Figure 17-1.

DriSteem recommends installing a strainer in the supply water line to prevent clogging of the solenoid valve or ﬂ oat valve oriﬁ ce. A strainer is highly recommended when the humidiﬁ er has the end-of-season drain option. The strainer prevents particulate from collecting at the solenoid valve seat.

Important: Damage caused by chloride

corrosion is not covered by your DriSteem warranty. See “Supply water guidelines” on Page 2.

In order to minimize RO/DI water use, disconnect factory piping to the water tempering device and pipe directly to tap water.

WARNING

Fire hazard

If a GTS humidiﬁ er with the RO/DI water option is supplied with tap water, the ﬂ oat valve assembly will become clogged, and particulate will accumulate on the low water cutoff switch (ﬂ oat switch). This will cause failure of a critical safety circuit and the potential for a dry tank ﬁ re. A dry tank ﬁ re can cause heat exchanger, steam hose, and wire insulation failure, severe property damage, severe personal injury, or death.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 27

INSTALLATION

Drain Piping:

The drain line piped from the humidiﬁ er must be run to an approved sanitary waste or suitable drain. Although the GTS humidiﬁ er is equipped with integral water tempering, if nonmetallic drain pipe or hose is used, DriSteem recommends it be rated for 212 °F (100 °C) minimum continuous operating temperature.

Minimum drain pipe size is 1½" (DN40) inside diameter. Do not reduce the size of the drain piping. If the length of the drain piping exceeds 10' (3 m), increase the pipe size. If combining multiple drain lines together, ensure proper common pipe sizing practices are used.

Do not locate the humidiﬁ er directly above a ﬂ oor drain — skim and drain water dumped into the drain will cause ﬂ ash steam. This steam will rise and saturate electrical components, adversely affecting component life and performance.

An open drain with a 1" (25 mm) air gap between the drain piping and the drain is required. Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂ ash steam; otherwise, condensing on nearby surfaces may occur.

Drain piping after the water seal must be pitched a minimum of 1/8"/ft (1%) toward the drain. Governing codes may require more pitch.

If the proximity of a drain requires the humidiﬁ er drain and skim water to be lifted, use a water pump with capacity of at least 12 gallons per minute (gpm) or 45.4 litres per minute (L/m). Contact DriSteem to order a drain pump suitable for your installation. A check valve is required on the discharge of the pump (see Figure 21-1). Electrical power for the pump is independent of the humidiﬁ er.

The GTS humidiﬁ er has an auxiliary 1½" (DN40) drain outlet located below the subpanel. This drain outlet can be hard-piped during installation to enable rapid tank draining before maintenance. This outlet can also provide access for removing scale from the tank bottom.

FIGURE 21-1: LIFTING DRAIN WATER

Discharge piping, by installer

Inlet drain water piping, by installer

Integral water tempering chamber

Governing codes may require that the 212 °F (100 °C) drain and skim/overﬂ ow water from the humidiﬁ er be tempered before it is discharged into the building drain piping. The GTS humidiﬁ er has an integral water tempering chamber that tempers 6 gpm (22.7 L/m) of 212 °F (100 °C) water to 140 °F (60 °C). The water tempering sequence of operation is:

1. Hot water discharged from the humidiﬁ er enters the water tempering chamber from either the skim/overﬂ ow port or the tank drain.

2. Cold water enters the water tempering chamber through a temperature-actuated valve to mix with the hot discharged water.

3. Tempered water at 140 °F (60 °C) maximum exits through the water tempering chamber side outlet for safe discharge into a municipal sewer system or PVC pipe.

4. In order to minimize RO/DI water use, disconnect factory piping to the water tempering device and pipe directly to tap water.

5. If planning to use heated supply water, disconnect the water line to the water tempering device at the ﬁ ll manifold, and reconnect it to a cold water supply. This will ensure that the water tempering device operates properly.

Table 21-1: Integral water tempering specifications

Maximum

Water type

Hot water inﬂ ow

Cold water inﬂ ow*

Tempered water outﬂ ow

* Cold water inﬂ ow pressure must be between

25 psi and 80 psi (172 kPa and 552 kPa).

low rate

U.S.

L/m °F °C

gpm

6 22.7 212 100

6 22.7 70 21

12 45.4 140 60

Maximum

temperature

Water pump

DC-1117

Note: Size water pump to handle a minimum of 12 gpm (45.4 L/m).

Check valve

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 28

INSTALLATION

Piping:

GAS PIPING GUIDELINES

Gas

• After threading and reaming the ends of the pipes, inspect piping and remove loose dirt and chips.

• Support piping so there are no strains imposed on unit or controls.

• Use two wrenches when connecting piping to unit or controls.

• Provide a drip pocket before each unit and in the line where low spots cannot be avoided.

• Takeoff to unit should come from top or side of main to avoid trapping condensate.

• Piping that is subject to wide temperature variations should be insulated.

• Pitch piping up toward unit at least 1/4" (6 mm) per 15' (4.5 m) of horizontal run.

• Compounds used on threaded joints of gas piping must be resistant to the harmful action of liqueﬁ ed petroleum gases.

WARNING

Fire or explosion hazard

Purge air before lighting unit by disconnecting piping at gas control. In no case should line be purged into heat exchanger. Failure to follow these instructions could cause a ﬁ re or explosion, resulting in bodily injury, death, or signiﬁ cant property damage.

WARNING

Fire hazard

Supply the humidiﬁ er only with the gas type (natural gas or LP gas) listed on the humidiﬁ er name plate. Failure to supply the humidiﬁ er with the listed gas type could result in burner failure or a ﬁ re, causing property damage, personal injury, or death.

To convert the humidiﬁ er to natural gas or LP gas, contact DriSteem Technical Support or your DriSteem Representative/Distributor.

Important: For North American models,

the recommended supply pressure is 7" wc (1.75 kPa) for natural gas or 11" wc (1.83 kPa) for LP gas.

For European models, the required supply pressure is 20 or 25 mbar for natural gas and 30, 37, or 50 mbar for propane gas.

• After installation, check ﬁ eld piping and humidiﬁ er gas train for gas leaks.

• Do not use soap solution or open ﬂ ame on humidiﬁ er gas train. A gas leak detector is recommended.

• Install a ground joint union and a manual shutoff valve immediately upstream of the unit. Install a plugged tapping upstream of the shut-off valve, accessible for test gauge connection (see Caution at left). Pressure tappings for test gauges are located on all gas valves.

• Allow at least 5' (1.5 m) of piping between any high pressure regulator and unit pipe connection.

• Piping installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, must conform to:

In the United States: The National Fuel Gas Code, ANSI Z223.1 (latest

edition).

In Canada: Local plumbing or waste water codes and other applicable

codes and with the current code CAN/CGS-B149.1, “Installation Code for Natural Gas Burning Appliances and Equipment,” or CAN/CGA-B149.2, “Installation Code for Propane Burning Appliances and Equipment.”

In Europe: The National Gas Safety (Installation & Use) Regulations.

CAUTION

Install connection for gas pressure test gauge

Gas pressure to the humidiﬁ er controls must never exceed 24" wc (6 kPa, 60 mbar), or the gas valve will become damaged and require replacement. Install a 1/8" pipe thread (DN6) plugged tapping, accessible for test gauge connection, immediately upstream of the gas supply connection to the appliance.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 29

INSTALLATION

Gas Piping:

• Do not use ﬂ exible connectors.

• Piping to units should conform with local and national requirements for type, volume, and gas handled and for pressure drop allowed in the line. Refer to the tables on this page to determine the gas ﬂ ow in ft3/hr or m3/ hr for the type of gas and size of unit to install. Using this value and the length of pipe necessary, determine the pipe diameter. Where several units are served by the same main, the total capacity, gas ﬂ ow, and length of main must be considered. Avoid pipe sizes smaller than 1/2" (DN15). Table 23-2 allows for the usual number of ﬁ ttings with a 0.3" wc (0.07 kPa) pressure drop.

• When the speciﬁ c gravity of the gas is other than 0.60 for natural gas or

1.53 for propane, use Table 23-1.

Table 23-2: Gas pipe capacities for gas pressures of 0.5 psig (3.45 kPa) or less

Length of

pipe

ft m ft

Gas ﬂ ow in piping in ft3/hr and m3/hr at pressure drop of 0.3" wc (0.07 kPa)

Nominal iron pipe diameter in inches (DN)

1/2" (DN15) 3/4" (DN20) 1" (DN25) 1¼" (DN32) 1½" (DN40)

/hr m3/hr ft3/hr m3/hr ft3/hr m3/hr ft3/hr m3/hr ft3/hr m3/hr

Speciﬁ c gravity = 0.60

Table 23-1: Specific gravity conversion factors

Natural gas

Speciﬁ c gravity Factor

0.55 1.04

0.60 1.00

0.65 0.962

Propane gas

Speciﬁ c gravity Factor

1.50 0.633

1.53 0.626

1.60 0.612

Note: Use the above multiplying factor with Table: 23-2 when the speciﬁ c gravity of gas is other than 0.60 (natural gas) or 1.53 (propane).

10 3 132 3.7 278 7.9 520 14.7 1050 29.7 1600 45.3

20 6 92 2.6 190 5.4 350 9.9 730 20.7 1100 31.1

30 9 73 2.1 152 4.3 285 8.1 590 16.7 890 25.2

40 12 63 1.8 130 3.7 245 6.9 500 14.2 760 21.5

50 15 56 1.6 115 3.3 215 6.1 440 12.5 670 19.0

60 18 50 1.4 105 3.0 195 5.5 400 11.3 610 17.3

70 21 46 1.3 96 2.7 180 5.1 370 10.5 560 15.9

80 24 43 1.2 90 2.5 170 4.8 350 9.9 530 15.0

90 27 40 1.1 84 2.4 160 4.5 320 9.1 490 13.9

100 30 38 1.1 79 2.2 150 4.2 305 8.6 460 13.0

See example on page 24.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 30

INSTALLATION

Gas Piping:

EXAMPLE

For this example, refer to the tables on Page 23.

To determine gas piping size, begin by calculating the cubic feet/hour (ft3/hr) or m3/hr using the following formula:

Btuh (kW) input / caloriﬁ c value of gas

Caloriﬁ c values are:

• Natural gas: 1025 Btu/ft3 (10.6 kW-hr/m3)

• Propane: 2500 Btu/ft3 (25.9 kW-hr/m3)

For example, if you have a GTS-400 operating on natural gas, calculate the ft3/hr or m3/hr as follows:

400,000 Btuh / 1025 Btu/ft3 = 390 ft3 per hour

117.2 kW / 10.6 kW-hr/m3 = 11.1 m3 per hour

If you need to run your gas piping 60 feet (18 m), see Table 23-2, and look horizontally across the 60 ft (18 m) row until you locate the next highest value above your calculated ft3/hr or m3/hr. In this example, you are looking for the next highest value above 390 ft3/hr (11.05 m3/hr), which is 400 ft3/hr (11.3 m3/hr) and indicates the use of a 1¼" (DN32) pipe for this application.

Gas leak testing

• When leak-testing the gas supply piping system, disconnect the humidiﬁ er and its gas shutoff valve during any pressure in excess of 24" wc (6 kPa). Isolate the humidiﬁ er from the gas supply piping system by closing its ﬁ eld-installed manual shutoff valve during any pressure not equal to 24" wc (6 kPa).

• With all burners running, check gas supply pressure at the inlet pressure tap of the combination gas control valve.

For North American models, the

recommended supply pressure is 7" wc (1.75 kPa) for natural gas or 11" wc (1.83 kPa) for LP gas. Perform gas piping purging as described in ANSI Z223.1 (latest edition) or in Canada, CAN/CGA-B149 codes. The minimum supply pressure is 6" wc (1 kPa) for natural gas or LP gas.

For European models, the required supply

pressure is 20 or 25 mbar for natural gas and 30, 37, or 50 mbar for propane gas.

Using the same example, if the speciﬁ c gravity of your natural gas was 0.55 (instead of the 0.60 standard), see Table 23-2 for an adjustment factor. In this case, the factor would be 1.04, which you multiply by the 390 ft3/hr (11.05 m3/hr) value. This gives you a new value of 406 ft3/hr (11.49 m3/hr). Referring again to Table 23-2, you see that for the same 60 ft (18 m) length, you now need to use 1½" (DN40) pipe due to the change in the speciﬁ c gravity of the gas.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 31

Gas Piping:

FIGURE 25-1: GTS GAS PIPING

Models 100, 200

OM-1236

INSTALLATION

1/2” pipe thread (DN15) piping

Plugged test gauge connection

Manual gas shutoff valve

Models 300-800

Gas manifold (by DriSteem)

3” (76 mm) min.

Drip pocket

See Table 18-1 for pipe size by model

Plugged test gauge connection

Manual gas shutoff valve

Note: Dashed lines indicate supplied by installer

OM-1235

Drip pocket

3” (76 mm) min.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 32

INSTALLATION

Combustion and ventilation air

The GTS humidiﬁ er supports both room air and sealed combustion. See Warning. Requirements and recommendations for each follow.

WARNING

ROOM AIR COMBUSTION

• All fuel burning equipment must be supplied with air for combustion of the fuel. Sufﬁ cient air must be provided to ensure there is not a negative pressure in the equipment room or space.

• Provide adequate combustion and ventilation air in accordance with Section 5.3, Air for Combustion and Ventilation, of the National Fuel Gas Code, ANSI Z223.1 or applicable provisions of governing codes. Canadian installations must be installed in accordance with sections 7.2,

7.3, and 7.4 of the CAN/CGA.B149 Installation Codes and all authorities having jurisdiction.

• For proper and safe operation this appliance needs air for combustion and ventilation. Do not block or obstruct air openings on the appliance, spaces around the appliance, or air openings communicating with the appliance area.

• Do not locate in a dusty environment.

• Do not block the ﬂ ow of combustion and ventilation air. To provide for necessary oxygen for proper combustion, openings must be provided to allow outside air to enter the space where the humidiﬁ er is located. Enclosed spaces, such as equipment rooms, must be vented for combustion air. The size of air openings must be based on all gas-burning equipment installed in the space involved. Table 26-1 outlines four types of locations, and the requirements of each.

Air for combustion

Air for combustion must not be contaminated by halogen compounds, which include ﬂ uoride, chloride, bromide, and iodide. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, salts, air fresheners, and other household products.

When the GTS is located in an environment with negative pressure or toxic air, it must have sealed combustion.

Failure to follow these instructions could cause severe bodily injury or death.

Table 26-1: Location of humidifier and required air openings

Location description Required air opening

Conﬁ ned space with all air from inside the building; conventional frame, brick or stone construction with normal inﬁ ltration (Note: this location rarely provides enough air for higher capacity units.)

Conﬁ ned space with all air from outside the building through air ducts

Conﬁ ned space with all air from outside the building from through-wall openings only (no ducts)

Unconﬁ ned space with all air from outside the building

* The minimum dimension of any opening is 3" × 3" (76 mm × 76 mm).

Two openings, 1 sq. in. (6.5 cm opening per 1000 Btu/hr (293 W) input The minimum free area of all openings combined is 100 sq. in. (645 cm2).

Two openings, 2 ducts, 1 sq. in. (6.5 cm per opening per 2000 Btu/hr (586 W) input*

Two openings, 1 sq. in. (6.5 cm2) per opening per 4000 Btu/hr (1172 W) input*

Same as conﬁ ned space; all air from outside the building

) per

)

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 33

Combustion and ventilation air

SEALED COMBUSTION

The GTS supports sealed combustion using 4" (DN100) PVC or CPVC piping (see Figure 27-1). All GTS models have a single point connection to the blower inside the humidiﬁ er shroud.

When running PVC or CPVC piping for sealed combustion, the maximum allowable distance to the outdoor air source is 70' (21.3 m) including 7' (2.1 m) equivalent length for each elbow. The outside air source can be either a ﬁ nal connection outside the building or a connection to an outdoor air plenum within the building. When the combustion air origination point is outside the building, the opening must be covered with a large mesh screen to prevent the introduction of unwanted materials without restricting airﬂ ow.

If sealed combustion piping is less than 20 ft (6 m), we recommend insulating piping to prevent condensation.

INSTALLATION

WARNING

Requirement for manifolding sealed combustion piping runs

When installing sealed combustion piping for more than one GTS humidiﬁ er, do not commonly manifold multiple sealed combustion piping runs without having the manifold sized for the speciﬁ c installation by a licensed engineer. Failure to follow these instructions could starve the GTS humidiﬁ er of combustion air resulting in either the unit not being able to light or high carbon monoxide (CO) levels, which may cause severe personal injury or death.

FIGURE 27-1: GTS OPTIONAL SEALED COMBUSTION CONNECTION

OM-1225

4" dia. (DN100) PVC or CPVC combustion air intake

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 34

INSTALLATION

Vertical and horizontal venting

GUIDELINES (STACK CONNECTION)

• The GTS is a Fan Assisted Category I (natural draft) Appliance. Installations where the vent terminates in a side wall of the building, or where the overall horizontal run exceeds the overall vertical run require a power venter. See Page 30.

• Maximum ﬂ ue temperature under normal operating conditions is 400 °F (205 °C) plus ambient.

• Maximum abnormal-operation ﬂ ue temperature is 658 °F (348 °C) plus ambient.

• Flue draft negative pressure greater than 0.2" wc (50 Pa) may cause unacceptable post ignition.

• Vent piping must be UL or UL/CSA listed type B, B-W, or any other vent type approved for a Category I appliance.

– Type B: Double wall construction, inner wall aluminum, outer wall

galvanized steel

– Type B-W: Same as type B except fabrication in oval shapes only

Do not use more than one type of venting per application Required

clearance for Type B and B-W vent piping is 1" (25 mm).

WARNING

Installation requirements

The humidiﬁ er must be installed by a qualiﬁ ed technician and meet the requirements of all governing codes. Failure to follow these instructions could cause severe bodily injury or death.

Note: For European models, contact your distributor for horizontal venting parts.

• Do not use vent equipment from more than one manufacturer.

• When connecting the humidiﬁ er to a gas vent or chimney, installation must be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1; or Section 7, Venting Systems and Air Supply Appliances, of the CAN/CGA B149 Installation Codes; or National Gas Safety Code (Installation & Use) Regulations (latest revision); governing codes, and the vent manufacturer’s instructions.

• When applying the codes, reference also the venting manufacturer's instructions, the service gas supplier's regulations, and the speciﬁ c instructions provided in this manual.

• Install a drip tee or ﬂ ue box condensate drain. See Caution statement.

• The purpose of venting the gas humidiﬁ er is to completely remove all products of combustion and ventilation gases to the outside air.

• For vertical vent pipe terminations only: Do not reduce the vent diameter and avoid short turns in the vent piping. Use the same size stack as the vent furnished with the humidiﬁ er. Maintain a minimum upward slope of 1/4" per linear foot (2%) on all horizontal runs. Maintain proper support of vent connections and joints. Observe clearances (in accordance with applicable codes) from all combustible materials and install an approved cap for the stack outlet. The bottom of the cap must be one stack diameter above the top of the stack.

• Inspect for proper and tight construction. Remove any restrictions or obstructions. An existing chimney may require cleaning.

CAUTION

Flue condensate removal

Install a drip tee or ﬂ ue box condensate drain for start-up ﬂ ue condensate removal. Failure to follow these instructions could cause water to accumulate in the ﬂ ue box.

• For vertical vent pipe terminations only: Extend chimney or vent at least 3' (1 m) above its passage through a roof and at least 2' (0.6 m) above any ridge within 10' (3 m) of the chimney (governing codes apply).

• Do not connect this humidiﬁ er to a chimney ﬂ ue servicing a separate appliance designed to burn solid fuel.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 35

Vertical and horizontal venting

• Never connect this humidiﬁ er to a chimney serving a ﬁ replace, unless the ﬁ replace opening is permanently sealed off.

INSTALLATION

WARNING

• Code prohibits venting into an unlined masonry or concrete chimney.

• If this humidiﬁ er is connected to a lined, masonry chimney, the chimney must be sized and installed according to the provisions of the National Fuel Gas Code or Canadian CAN/CGA.B149 requirements, or governing codes.

• Vent connector serving this appliance shall not be connected into any portion of mechanical draft systems operating under positive pressure.

• Add insulation to any roof or wall penetration vent connector that is exposed to ambient temperatures of 30 °F (0 °C) or less, especially any application using single-wall vent pipe as a connector.

• Do not insulate vent pipe exposed to outdoor weather conditions (e.g., above roof lines).

• Install vent piping as direct as possible, with a minimum number of turns or elbows.

• Rigidly support the vent pipe every 5' (1.5 m) or less with hangers or straps to ensure there is no movement after installation. The humidiﬁ er vent box should not support the weight of the vent piping.

• No portion of the vent system should extend into, or pass through, any circulation air duct or plenum.

• The vent system must terminate above the roof surface per the National Fuel Gas Code, CAN/CGA.B149, or National Gas Safety Code (Installation & Use) Regulations (latest revision) requirements or governing codes, and must include a UL or UL/CSA listed vent cap or roof assembly, unless prohibited by governing codes. DriSteem recommends installing a high-wind vent cap on all GTS humidiﬁ ers.

Horizontal

For applications where the vent pipe terminates in a vertical position, the horizontal length of the vent and vent connector must not exceed the height of the vent system unless a power venter is used. Failure to follow these instructions could cause ﬂ ue gases to exit the vent piping, causing severe personal injury or death.

• For vertical vent pipe terminations only: This humidiﬁ er may be commonly vented with other listed Category I gas-ﬁ red appliances. Total input rates of all appliances determines the vent size.

• Install and ﬁ re-stop all vent pipe passing through ﬂ oors, ceilings, and walls with the proper clearances from combustible material according to the National Fuel Gas Code, Canadian Standards CAN/CGA.B149, the National Gas Safety Code (Installation & Use) Regulations (latest revision), or governing codes.

• In replacement installation where an existing vent system may be used, inspect the vent system for condition, size, type of vent material, and height to meet the requirements in these instructions. When connecting the humidiﬁ er to a gas vent or chimney, the installation must be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1; Section 7, Venting Systems and Air Supply Appliances, of the CAN/CGA B149 Installation Codes; The National Gas Safety Code (Installation & Use) Regulations (latest revision), governing building codes, and the vent manufacturer’s instructions.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 36

INSTALLATION

Vertical and horizontal venting

SPECIAL HORIZONTAL VENTING REQUIREMENTS

• Ensure that distances from vent terminal to adjacent public walkways, buildings, and openable windows and building openings are consistent with National Fuel Gas Code, ANSI Z223.1, CAN/CGA B149 Installation Codes, National Gas Safety Code (Installation & Use) Regulations (latest revision), or governing codes.

• In areas accessible to the public, vent terminal must be at least 7' (2.1 m) above ground level to prevent burns from hot terminal surface.

• The vent terminal and air intake locations must be at sufﬁ cient height above ground level to prevent blocking by expected snowfall.

• Building materials must be protected from degradation by ﬂ ue gases.

• Maintain minimum horizontal clearance of 4' (1.22 m) from electric meters, gas meters, regulators, and relief equipment.

• Maximum equivalent length of vent pipe is 100' (30 m). Minimum equivalent length of vent pipe is 10' (3 m). See power venter installation manual for equivalent lengths of ﬁ ttings.

• Vent box pressure must be –0.01" wc (–2.5 Pa). Set by adjusting power venter and barometric damper with all burners running (see manufacturer's instructions included with power venter and damper).

Table 30-1: Equipment required for horizontal

venting

Field controls

Item

Power venter

Barometric

damper

Vent hood SWH-1-5 (5") SWH-8

Electrical

ratings

Note: For European models, contact your

model number

for GTS models

100, 200, 300,

400

PVO-600 (5") PVE-1200 (8")

MG-1 (5") MG-1 (8")

120 VAC

60 Hz

2.1 A

distributor for horizontal venting parts.

Field controls

model number

for GTS models

500, 600, 700,

and 800

120 VAC

60 Hz

2.5 A

Table 30-2: Recommended minimum vent sizes

FIGURE 30-1: GTS VENTING

Important: Seal the connection and all other vent

piping joints on the pressure side of the power venter.

Vent hood

Distance**

Air intake

3½' (1.07 m)

minimum

Air intake

Notes: * Install a tee after the ﬁ rst elbow from the humidiﬁ er as shown. Use the open end of this tee for

the location of the barometric damper.

** Required distance between air intake and vent hood is deﬁ ned by governing codes.

• Refer to power venter manual for clearance requirements relative to combustion air openings.

Power venter

Recommended value for X approximately 12" (305 mm)

Barometric draft control installed in tee*

OM-1209

Minimum vent size

Model

GTS-100 5 130 5 130

GTS-200 5 130 5 130

GTS-300 7 180 5* 130

GTS-400 7 180 5* 130

GTS-500 8 205 8 205

GTS-600 8 205 8 205

GTS-700 10 255 8* 205

GTS-800 10 255 8* 205

Note: For best results, make transition to

smaller vent diameter as close to the power venter as possible.

Vertical vent Horizontal vent

inches mm inches mm

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 37

INSTALLATION

Dispersion:

SELECTING THE DISPERSION ASSEMBLY LOCATION

• 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.

• It is important that the dispersion assembly is positioned where the water vapor being discharged is carried off with the airstream and is absorbed before it can cause condensation or dripping in the duct.

• In general, the dispersion assembly is best placed where the air can most readily absorb the moisture being added without causing condensation at or after the unit. This normally is after the heating coil or where the air temperature is highest.

• Place the dispersion assembly so that absorption occurs before the intake of a high efﬁ ciency ﬁ lter. The ﬁ lter can remove the visible moisture and become waterlogged.

Selecting a location

• Place the dispersion assembly so absorption occurs before coming in contact with any metal surface.

• Place the dispersion assembly so absorption occurs before ﬁ re or smoke detection devices.

• Place the dispersion assembly so absorption occurs before a split in the duct. Otherwise, the dispersion assembly may direct more moisture into one duct than the other.

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

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 38

INSTALLATION

Dispersion:

Interconnecting piping requirements

• 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 33-1.

• See the steam loss data in Table 33-2.

• See the Table 37-1 for pitch of dispersion tubes and interconnecting piping for single tube and multiple tube applications. See Table 42-1 for pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb applications.

• If the humidiﬁ er must be located higher than the dispersion assembly, use the recommended installation shown in Figure 35-1.

• For single tube applications, see the capacities in Table 39-1.

CONNECTING TO DISPERSION ASSEMBLY WITH STEAM HOSE

• 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.

WARNING

Prevent pressure build-up in evaporating chamber

The evaporating chamber is designed as a nonpressurized vessel. Do not

restrict piping where steam exits the humidiﬁ er. Do not install a shut-off

valve on the piping connecting the evaporating chamber to the steam outlet.

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

• 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.

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

mc_060310_1145

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 39

INSTALLATION

Dispersion:

Interconnecting piping requirements

Table 33-1: Maximum steam carrying capacity and length of interconnecting steam hose or tubing

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

2 50 250 113 10 3 2 50 220 100 30 9

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-GTS

Tubing size Maximum capacity

3 5 80 5450 204 80 24

4 5 100

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.

5. Requires ﬂ ange connection.

Copper or stainless steel tubing

750 340 100 30

Maximum developed

length

Table 33-2: Steam loss of interconnecting steam hose or tubing

Description

Hose

Tubing

Note: Data based on an ambient air temperature of 80 °F (27 °C), ﬁ berglass insulation, and copper tubing.

Nominal hose or tubing size

Noninsulated Insulated

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

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 0.16 0.020 0.030 2.0 50

2 50 0.14 0.21 0.025 0.037 2.0 50

3 80 0.20 0.30 0.030 0.045 2.5 64

4 100 0.26 0.39 0.030 0.045 3.0 76

Steam loss

Insulation thickness

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 40

INSTALLATION

Steam outlet connectionsDispersion:

FIGURE 34-1: STEAM OUTLET CONNECTIONS

Tubing using hose cuff with clamps

Hose clamps

OM-1233

Flange connection

Support member

Tubing

6"-long (152 mm) hose cuff

Steam outlet connection (tubing)

Support tubing from above to prevent undue pressure on humidiﬁ er outlet. Allow for thermal expansion.

Hose connection

Steam hose

Hose clamp

Steam outlet connection (tubing)

OM-1232

Notes:

• Dashed lines indicate provided by installer.

• Diameter of interconnecting steam hose or tubing must be equal to or greater than the diameter of the steam outlet. Do not use steam hose or tubing that is smaller than the steam outlet.

Swing arm by installer

Directional arm (up, down, right, left) by installer

Steam outlet connection (ﬂ ange)

OM-1234

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 41

Drip tee installationDispersion:

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

• When interconnecting piping runs are long

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

FIGURE 35-1: DRIP TEE INSTALLATION (PIPING OVER AN OBSTRUCTION)

INSTALLATION

90° long sweep or two 45° elbows

Obstruction

Insulate tubing to reduce steam loss

To dispersion assembly

6" (150 mm) minimum

8" (200 mm) minimum

1" (25 mm) air gap

Notes:

• 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.

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

• Dashed lines indicate provided by installer

3/4" (DN20)

Open drain required. See ﬁ rst note below.

Pitch

OM-1210

GTS humidiﬁ er

Tubing drip tee, by installer. DriSteem part numbers for 304 stainless steel in-line tees:

• 1½" diameter (DN40): No. 162710

• 2" diameter (DN50): No. 162712

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 42

INSTALLATION

Dispersion:

INSTALLATION

Single tube and multiple tube

See the following pages for detailed drawings and notes for installing single tube and multiple tube dispersion assemblies.

DISPERSION TUBE MOUNTING

• Orient dispersion tube(s) so the tubelets (steam oriﬁ ces) point up.

• See Table 37-1 for dispersion tube pitch requirements.

• If mounting the humidiﬁ er above the level of the dispersion tube(s), see Figure 35-1.

CONDENSATE DRAIN PIPING

• Minimum diameter (ID) for draining from one or two dispersion tubes: 3/4" (DN20)

• Minimum diameter (ID) for draining from three or more dispersion tubes: 1" (DN25)

• Condensate drain piping must be rated for 212 °F (100 °C) continuous operating temperature.

• Condensate drain line must be piped as shown in the ﬁ gures on the following pages. Provide a 6" (152 mm) drop prior to a 5" (127 mm) water seal to ensure drainage of condensate from the header and to keep steam from blowing out of the drain line

Important:

mc_060210_0843

• 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.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 43

INSTALLATION

Single tube and multiple tubeDispersion:

Table 37-1: Pitch of dispersion tubes and interconnecting piping for single tube or multiple tube evaporative dispersion units*

Condensate

drain

Without

drain

With

drain

Notes: * When piping over an obstruction, see the drip tee installation illustration Figure 35-1.

• Assemble multiple dispersion tubes or use a Rapid-sorb or Ultra-sorb dispersion assembly to accommodate maximum humidiﬁ er load.

• The smallest GTS humidiﬁ er steam outlet is 2" (DN50). Install an adaptor manifold if using multiple 1½" (DN40) dispersion tubes. See Table 33-1.

Type of

interconnecting

piping

Steam hose

Tubing

Steam hose

Tubing

Diameter of dispersion tube and

interconnecting piping

1½" (DN40)

2" (DN50)

1½" (DN40)

2" (DN50)

1½" (DN40)

2" (DN50)

1½" (DN40) 1/2"/ft (5%)

2" (DN50) 1/4"/ft (2%)

Pitch of interconnecting

piping toward humidiﬁ er

2"/ft (15%)

1/8"/ft (1%)

2"/ft (15%)

Pitch of

dispersion tube(s)

2"/ft (15%)

toward humidiﬁ er

1/8"/ft (1%)

toward

condensate

drain

Pitch of

condensate drain

No drain

1/4"/ft (2%)

toward ﬂ oor drain or

toward humidiﬁ er if

humidiﬁ er is below

dispersion unit

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 44

INSTALLATION

Single tube and multiple tubeDispersion:

FIGURE 38-1: SINGLE TUBE DISPERSION WITH CONDENSATE WASTED TO FLOOR DRAIN

Steam hose or tubing. Insulate tubing to reduce steam loss. Do not insulate steam hose.

Secure and seal escutcheon plates

Duct

Dispersion tube

90° long sweep or two 45° elbows

GTS humidiﬁ er

Notes:

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

2. Assemble multiple dispersion tubes or use a Rapid-sorb or Ultra-sorb dispersion assembly where necessary to accommodate maximum humidiﬁ er load.

3. The smallest GTS humidiﬁ er steam outlet is 2" (DN50). Install an adaptor manifold if using multiple 1½" (DN40) dispersion tubes. See also Table 37-1.

4. Pitch steam hose or tubing toward humidiﬁ er:

– 2"/ft (15%) when using steam hose – 1/2"/ft (5%) when using 1½" tubing – 1/4"/ft (2%) when using 2" tubing

5. Dashed lines indicate provided by installer

Water seal

5" (127 mm)

OM-1212a

Pitch

(see Notes)

6" (152 mm)

recommended

1" (25 mm) air gap

3/8" (M10) mounting nut

Pitch tube toward drain

1/4" (DN8) pipe thread

Condensate drain tube, by installer, minimum 3/4" (DN20); must be suitable for 212 °F (100 °C) water

Open drain required. See Note 1 below.

1/2" (DN15) O.D. condensate drain tube; pitch 1/4"/ft (2%)

1/8"/ft (1%)

Table 38-1: Dispersion tube and condensate drain escutcheon plate dimensions

for 1½" (DN40) tube for 2" (DN50) tube

inches mm inches mm

A 1.51 38 2.03 52

B 3.25 83 5.00 127

C 0.75 19 0.75 19

D 3.25 83 3.25 83

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

FIGURE 38-2: DISPERSION TUBE AND CONDENSATE DRAIN ESCUTCHEON PLATES

Dispersion tube plate

(diameter)

Condensate drain plate

(diameter)

OM-351c

Page 45

Single tube and multiple tubeDispersion:

FIGURE 39-1: SINGLE TUBE WITH CONDENSATE RETURNED TO HUMIDIFIER

Duct

Dispersion tube

INSTALLATION

Steam hose or tubing

90º long sweep or two 45° elbows

GTS humidiﬁ er

Notes:

1. Assemble multiple dispersion tubes or use a Rapid-sorb or Ultra-sorb dispersion assembly where necessary to accommodate maximum humidiﬁ er load.

2. The smallest GTS humidiﬁ er steam outlet is 2" (DN50). Install an adaptor manifold if using multiple 1½" (DN40) dispersion tubes. See also Table 37-1.

3. Pitch steam hose or tubing toward humidiﬁ er:

– 2"/ft (15%) when using steam hose – 1/2"/ft (5%) when using 1½" (DN40) tubing – 1/4"/ft (2%) when using 2" (DN50) tubing

4. Dashed lines indicate provided by installer

1/2" (13 mm) air vent

Secure and seal escutcheon plates

Pitch (see Notes)

6" (152 mm)

minimum

H (see Table 16-1)

OM-1215b

6" (152 mm)

minimum

Pitch

1/4" pipe thread (DN8)

1/2" (DN15) O.D. condensate drain tube, pitch 1/4"/ft (2%)

5" (127 mm)

water seal

Condensate drain tube, by installer, 3/4" DN20 minimum. Return line piping material must be suitable for 212 °F (100 °C) water. Note: Condensate may be returned to the humidiﬁ er or wasted to a drain. See the previous page for piping condensate to a drain.

Mounting nut, 3/8" (M10)

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

Table 39-1: 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

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

DriCalc for the correct capacity.

• Single dispersion tube available with face width between 6" (152 mm) up to 120" (3048 mm) in 1" (25 mm) increments.

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

• The smallest GTS humidiﬁ er steam outlet is 2" (DN50). Install an adaptor manifold if using multiple 1½" (DN40) dispersion tubes.

(High-Efﬁ ciency Tubes)

Without drain With drain Without drain With drain

Uninsulated

FIGURE 39-2: SINGLE TUBE DISPERSION WITH CONDENSATE DRAIN

Thermal-resin tubelets (steam oriﬁ ce inserts)

1/4" (DN8) pipe thread end

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Movable escutcheon plate. Plate can be mounted within limits of

2.5" (64 mm).

Mounting

bracket

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

OM-351b

Page 46

INSTALLATION

Single tube and multiple tubeDispersion:

FIGURE 40-1: MULTIPLE TUBES WITH CONDENSATE WASTED TO FLOOR DRAIN

Duct

Dispersion tube

Steam hose or tubing

90° long sweep or two 45° elbows

GTS humidiﬁ er

OM-1215a

Notes:

1. Assemble multiple dispersion tubes or use a Rapid-sorb or Ultra-sorb dispersion assembly where necessary to accommodate maximum humidiﬁ er load.

2. The smallest GTS humidiﬁ er steam outlet is 2" (DN50). Install an adaptor manifold if using multiple 1½" (DN40) dispersion tubes. See also Table 37-1.

3. Pitch steam hose or tubing toward humidiﬁ er: – 2"/ft (15%) when using steam hose – 1/2"/ft (5%) when using 1½" (DN40) tubing – 1/4"/ft (2%) when using 2" (DN50) tubing

4. Dashed lines indicate provided by installer

Secure and seal escutcheon plates

Pitch (see Notes)

(152 mm)

Water seal

5" (127 mm)

1" (25 mm) air gap

Pitch

1/4" (DN8) pipe thread

Condensate drain tube provided by installer, 3/4" (DN20) minimum

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.

Dispersion tube

Mounting nut, 3/8" (M10)

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

1/2" (DN15) O.D. condensate drain tube, pitch 1/4"/ft (2%)

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 47

INSTALLATION

Dispersion:

GENERAL INSTALLATION INSTRUCTIONS

Rapid-sorb

Before you begin installation, read all dispersion instructions in this manual.

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

– Multiple dispersion tubes – Header – 3/4" × 2" (19 mm × 51 mm) L-bracket – 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 (in plastic

bag)

– Bolts and washers for mounting dispersion tubes to bracket (in end of

tubes or packaged in a bag with other accessories)

– Tubes, header, and L-bracket are tagged with customer requested

identiﬁ cation number written on each component.

• When choosing a location for installation, select a location that provides necessary access in and around ductwork or air handler.

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

• Center line of outer dispersion tubes should never be closer than 4.5" (114 mm) from side of ductwork or air handler wall.

Important:

mc_060210_0843

Table 41-1: 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

* 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

• Rapid-sorbs are provided with an L-bracket for installation:

– L-brackets 50" (1270 mm) or shorter have a hole 4" (102 mm) from

each end for mounting L-bracket to duct or air handler wall.

– L-brackets longer than 50" (1270 mm) have an additional hole in center

of L-bracket.

– Important: Before marking and drilling holes in duct or air handler,

refer to ALL pitch requirements for the Rapid-sorb assembly you received (see Table 42-1). Size, quantity, and location of penetrations are determined by speciﬁ c dimensions and conﬁ guration of Rapid-sorb assembly you received.

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

hardware for header support bracket is not provided.

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

Table 41-2: 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

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 48

INSTALLATION

Rapid-sorbDispersion:

PITCH REQUIREMENTS

• When installing Rapid-sorb with header outside a horizontal airﬂ ow duct, consider the following pitch issues:

– For 1½" (DN40) dispersion tubes, use a fastener of sufﬁ cient length to

accommodate 1/8"/ft (1%) pitch requirements toward the 3/4" pipe thread (DN20) header drain ﬁ tting.

– For 2" (DN50) dispersion tubes, bracket can be mounted ﬂ ush to

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

• See the table below and the drawings on the following pages for pitch requirements.

Table 42-1: Pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb evaporative dispersion units

Airﬂ ow

Horizontal

Vertical

Type of

interconnecting piping

Steam hose 1½" (DN40), 2" (DN50)

Tubing

Steam hose 1½" (DN40), 2" (DN50)

Tubing

Diameter of

interconnecting piping

1½" (DN40), 2" (DN50),

3" (DN80), 4" (DN100),

5" (DN125), 6" (DN150)

1½" (DN40), 2" (DN50),

3" (DN80), 4" (DN100),

5" (DN125), 6" (DN150)

Pitch of

interconnecting piping

2"/ft (15%)

toward Rapid-sorb

1/8"/ft (1%)

toward Rapid-sorb

2"/ft (15%)

toward Rapid-sorb

1/8"/ft (1%)

toward Rapid-sorb

Pitch of

dispersion tubes

Vertically plumb

2"/ft toward header

Pitch of header

1/8"/ft (1%) toward

condensate drain

1/8"/ft (1%) toward

condensate drain

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 49

INSTALLATION

Rapid-sorbDispersion:

RAPID-SORB HEADER OUTSIDE OF DUCT (HORIZONTAL AIRFLOW)

1. Locate and cut holes in ductwork for dispersion tubes. Use L-bracket as a template to locate holes on duct floor.

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

3. Mount dispersion tubes to header with provided connector, either a slip coupling or a hose cuff.

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

care not to shear O-rings.

• Set slip coupling on header stub or dispersion tube so O-ring is resting

on face of tubing.

• Rotate slip coupling as you push them onto tubing.

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

DO NOT use a petroleum-based lubricant.

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

Continued

Note: See Figure 43-1 for steam supply and condensate drain line connection instructions.

FIGURE 43-1: RAPID-SORB WITH HEADER OUTSIDE THE DUCT, HORIZONTAL AIRFLOW

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

90° long sweep or two 45° elbows

Steam hose or tubing

GTS humidiﬁ er

* Pitch steam hose or tubing toward Rapid-sorb: – 2"/ft (15%) when using steam hose – 1/8"/ft (1%) when using tubing

Slip coupling or hose cuff

Pitch*

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

OM-1214

Pitch*

3/4" pipe thread

(DN20) condensate drain

3/4" (DN20) copper

1" (25 mm) air gap

Stainless steel support by DriSteem

Airﬂ ow

Duct

Support bracket

Secure and seal escutcheon plates

2" (51 mm) recommended

5" (127 mm)

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 50

INSTALLATION

Rapid-sorbDispersion:

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

• For 1½" (DN40) dispersion 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 onto header

stub for O-rings to provide a seal.

• For 2" (DN50) dispersion tubes:

Before securing hose cuff in place with hose clamps on dispersion

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

6. Slide assembly up until L-bracket aligns with mounting holes in duct.

• For 1½" (DN40) dispersion tubes: – Header pitch is duplicated in 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 tightly to duct or air handler. – On low end of L-bracket, fastener must be long enough to

compensate for pitch, and a nut should be provided and secured on

both sides of L-bracket and duct or air handler for stability.

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

pitch of header.

– Before securing hose cuff in place with hose clamps on dispersion

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

7. Permanently secure both ends of the header and verify that the 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 dispersion tube escutcheon plate and condensate drain tube escutcheon plate around respective tubes, if applicable.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 51

Rapid-sorbDispersion:

RAPID-SORB HEADER INSIDE OF DUCT (HORIZONTAL AIRFLOW)

1. Locate and cut the holes in ductwork or air handler for steam header penetration, condensate drain piping, and header 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 horizontally in the duct.

When installing in an air handler, the rotation of the header is often less

than 90°. Typically, due to the condensate drain piping requirements, the header can be set on the ﬂ oor of the air handler, assembled in the vertical position, and then raised and mounted in place.

Continued

FIGURE 45-1: RAPID-SORB HEADER INSIDE THE DUCT, HORIZONTAL AIRFLOW

INSTALLATION

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

Slip coupling or hose cuff

90° long sweep or two 45° elbows

Pitch*

Steam hose or tubing

Secure and seal escutcheon plate

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

OM-1213

GTS humidiﬁ er

* Pitch steam hose or tubing toward Rapid-sorb: – 2"/ft (15%) when using steam hose – 1/8"/ft (1%) when using tubing

Stainless steel support by DriSteem

Airﬂ ow

Duct

3/4" pipe thread (DN20) drain

3/4" (DN20) copper

1" (25 mm) air gap

5" (127 mm)

Support bracket

2" (51 mm) recommended

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 52

INSTALLATION

Rapid-sorbDispersion:

4. 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 the O-rings.

• Set the slip coupling on the header stub or dispersion tube so the O-ring

is resting on the face of the tubing.

• Rotate the slip coupling as you push it on to the tubing.

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

necessary, DO NOT use a petroleum-based lubricant.

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

6. 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.

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

• 1½'' (DN40) dispersion tubes

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

the header stub for the O-rings to provide a seal.

– The high end of the L-bracket can be fastened tight to the duct or air

handler.

– On the low end of the L-bracket, the fastener must be long enough to

compensate for the pitch, and a nut should be provided and secured on both sides of the L-bracket and the duct or air handler for stability.

• 2" (DN50) dispersion tubes

– Fasten the bracket to the top of the duct or air handler and use the

hose cuffs to compensate for the pitch of the header.

– Before securing the hose cuff in place, with the hose clamps on the

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

8. 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

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

10. See Figure 45-1 for steam supply and condensate drain line connection instructions.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 53

Rapid-sorbDispersion:

STEAM SUPPLY CONNECTIONS TO THE RAPID-SORB HEADER

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

2. If multiple humidifiers 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.

• Route the necessary number of steam supplies from the humidiﬁ er tanks

to the steam supply connector.

• Position the steam supply connector to accept the steam supplies while

maintaining the necessary pitch.

• Make sure the hose clamps on the steam supply connector and header

are tight.

CONDENSATE DRAIN CONNECTIONS TO THE RAPID-SORB HEADER

1. Piping must be minimum 3/4" I.D. (DN20) and rated for 212 °F (100 °C) minimum continuous operating temperature.

INSTALLATION

2. Condensate drain line must be piped as shown in the figures on the previous pages. 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

3. 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 flash steam, or condensing on nearby surfaces may occur.

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

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 54

INSTALLATION

Area-type fanDispersion:

Table 48-1: Area-type (evaporative steam) minimum non-wetting distances*

60 °F (16 °C)

Maximum steam

capacity

Rise Spread Throw Rise Spread Throw Rise Spread Throw

lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m

50 20 1.0 0.3 2.0 0.6 6.0 1.8 1.0 0.3 2.0 0.6 6.0 1.8 1.0 0.3 2.5 0.8 6.0 1.8

75 34 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 4.0 1.2 8.0 2.4

100 45 4.0 1.2 4.0 1.2 10.0 3.1 4.0 1.2 4.0 1.2 10.0 3.1 4.0 1.2 5.0 1.5 10.0 3.1

150 68 6.0 1.8 5.0 1.5 12.0 3.7 6.0 1.8 5.0 1.5 12.0 3.7 6.0 1.8 5.0 1.5 12.0 3.7

200 90 7.0 2.1 7.0 2.1 13.0 4.0 8.0 2.4 7.0 2.1 14.0 4.3 8.0 2.4 7.0 2.1 14.0 4.3

30% RH 40% RH 50% RH

225 102 7.0 2.1 7.0 2.1 13.0 4.0 8.0 2.4 7.0 2.1 14.0 4.3 8.0 2.4 7.0 2.1 14.0 4.3

250 110 8.0 2.4 8.0 2.4 15.0 4.6 9.0 2.7 9.0 2.7 16.0 4.9 9.0 2.7 9.0 2.7 16.0 4.9

285 130 9.0 2.7 9.0 2.7 17.0 5.2 10.0 3.1 10.0 3.1 18.0 5.5 10.0 3.1 10.0 3.1 18.0 5.5

300 136 9.0 2.7 9.0 2.7 17.0 5.2 10.0 3.1 10.0 3.1 18.0 5.5 10.0 3.1 10.0 3.1 18.0 5.5

70 °F (21 °C)

Maximum steam

capacity

Rise Spread Throw Rise Spread Throw Rise Spread Throw

lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m

50 20 1.0 0.3 1.5 0.5 4.0 1.2 1.0 0.3 2.0 0.6 4.0 1.2 1.0 0.3 2.0 0.6 4.0 1.2

75 34 2.0 0.6 2.0 0.6 6.0 1.8 2.0 0.6 2.5 0.8 6.0 1.8 2.0 0.6 2.5 0.8 6.0 1.8

100 45 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 3.0 0.9 8.0 2.4

150 68 4.0 1.2 4.0 1.2 10.0 3.1 4.0 1.2 4.0 1.2 11.0 3.4 4.0 1.2 4.0 1.2 11.0 3.4

200 90 5.0 1.5 5.0 1.5 11.0 3.4 5.0 1.5 5.0 1.5 12.0 3.7 5.0 1.5 5.0 1.5 12.0 3.7

225 102 5.0 1.5 5.0 1.5 11.0 3.4 5.0 1.5 5.0 1.5 12.0 3.7 5.0 1.5 5.0 1.5 12.0 3.7

250 110 6.0 1.8 6.0 1.8 12.0 3.7 6.0 1.8 6.0 1.8 13.0 4.0 6.0 1.8 6.0 1.8 14.0 4.3

30% RH 40% RH 50% RH

285 130 7.0 2.1 7.0 2.1 14.0 4.3 7.0 2.1 7.0 2.1 15.0 4.6 7.0 2.1 7.0 2.1 16.0 4.9

300 136 7.0 2.1 7.0 2.1 14.0 4.3 7.0 2.1 7.0 2.1 15.0 4.6 7.0 2.1 7.0 2.1 16.0 4.9

* With fan on high speed Rise: Minimum non-wetting height above the steam chute Spread: Minimum non-wetting width from the steam chute Throw: Minimum non-wetting horizontal distance from the steam chute

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 55

INSTALLATION

Dispersion:

Area-type fan

Table 48-1 lists the Area-type steam minimum rise, spread, and throw nonwetting dimensions. Surfaces or objects located within this minimum dimension can cause condensation and dripping.

The greater the space relative humidity, the higher and farther the discharged steam will carry and rise in the space until becoming absorbed.

The Area-type fan, brackets, and wiring are factory installed on the humidiﬁ er.

Note: For European Area-type models, contact your Distributor for parts.

FIGURE 49-2: AREA-TYPE RISE, SPREAD, THROW

ULTRA-SORB

Ultra-sorb

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

Also see Figure 49-1.

FIGURE 49-1: ULTRA-SORB WITH THE HIGH-EFFICIENCY TUBE OPTION

OM-1230

Table 49-1: Area-type electric fan specifications

Motor 120 V, 50/60 Hz

Blade diameter 18" (457 mm)

Speeds 3

Control Rotary switch

RPM (high speed) 1500

Amps (high speed) 1.52

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.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 56

OPERATION

Start-up

START-UP CHECKLIST

After the system is installed and connected to gas, electrical, water supplies, and controls, check the following items:

☐ Verify that the GTS humidiﬁ er, controls, piping, electrical connections, steam

supply, and dispersion unit(s) are installed according to the following:

• Installation instructions in this manual

• Vapor-logic Installation and Operation Manual (shipped with the humidiﬁ er)

– Installation section – Installation checklist

• Ladder style wiring diagram (shipped inside unit)

• External connections wiring diagram (shipped inside unit)

• Gas connection instructions in this manual

• Mounting instructions in this manual

• All governing codes

☐ Piping (gas)

• Verify that the gas type supplied to the humidiﬁ er matches the unit nameplate label.

• Verify that all ﬁ eld and humidiﬁ er gas piping has been tested for leaks. (Soap and water are not recommended near gas valves.)

☐ Piping (steam, drain, supply water)—Verify that all piping connections have

been completed as recommended and that water pressure is available.

WARNING

Startup

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

The Vapor-logic Installation and Operation Manual 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 was shipped with your humidiﬁ er. Additional copies can be viewed, printed, or ordered on our website: www.dristeem.com

☐ Electrical—Verify that all wiring connections have been made in accordance

with all governing codes and the GTS wiring diagrams.

☐ Controls—Verify that all control wiring has been completed as speciﬁ ed and

required for correct and safe operation of the GTS humidiﬁ er. Refer to the Vapor-logic Installation and Operation Manual.

☐ Verify that the humidiﬁ er tank is securely installed and level before ﬁ lling

with water (see the operating weights in Table 4-1.

☐ Verify that the humidiﬁ er tank is level front to back and side to side after it is

full of water.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 57

Start-up

OPERATION

START-UP PROCEDURE

1. Refer to the Vapor-logic Installation and Operation Manual, and verify that the installer has followed the Pre-installation Checklist (including proper wiring).

2. Follow the “Start-up commissioning checklist” on Pages 52 and 53 of this manual.

Note: During start-up, do not leave the humidiﬁ er unattended.

3. Monitor the humidifier operation through multiple fill cycles. The humidifier operating status appears on the Vapor-logic keypad/display.

Notes:

• On tap/softened water units, water skims from the humidiﬁ er after every

ﬁ ll cycle. Adjust the amount of skim by increasing or decreasing the skim time (see the Vapor-logic Installation and Operation Manual).

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

factory default setting for skim time. See “Adjusting skim duration” on Page 56, and see the Vapor-logic controller Setup menu.

For complete operating instructions, read and follow the instructions in the “Operation” section of the Vapor-logic Installation and Operation Manual.

Systems and safeguards

The GTS humidiﬁ er has a number of systems and safeguards to ensure proper operation.

• When there is a call for humidity, all of the combustion blowers must start. Each combustion blower sends a signal to the microprocessor relaying its current speed. If this actual speed is outside an acceptable range, the GTS will not operate.

• The negative pressure gas valves used on the GTS are designed to keep a constant ratio of air and gas throughout the operating range of the blower. If the ﬂ ue becomes blocked or the blower fails to run, the blocked ﬂ ue sensor will shut down the humidiﬁ er.

• During operation, the water level in the tank is monitored by a probe system for tap/ softened water units and by a low water ﬂ oat for RO/DI units. These water monitors tie into the Vapor-logic controller. If the water level drops below a safe point, the controller turns heaters off and tries to ﬁ ll. If humidiﬁ er is unable to ﬁ ll within a deﬁ ned time period, an “Excessive reﬁ ll time” alarm appears in the Vapor-logic Alarm Log. The heaters will remain off until this alarm is cleared. (For more about alarms, see the Vapor-logic Installation and Operation Manual.)

• In tap/softened water applications, the water level in the tank is also monitored by a redundant low-water system that runs independently of the Vapor-logic. This system is tied directly into the power source for the gas valves. If this system detects a low water condition, the humidiﬁ er shuts down until water is present or until the a “GTS low water” alarm is cleared from the Vapor-logic Alarm Log.

• In addition to monitoring the water level, there is a temperature sensor located near the top of the heat exchanger. If the water level drops too low and both the main and redundant low water sensors fail to detect it, the temperature sensor shuts down the humidiﬁ er before an unsafe condition occurs.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 58

OPERATION

Start-up commissioning checklist

Visit date _______________________________________________

Model # ________________________________________________

Serial # _________________________________________________

Tag # ___________________________________________________

Important: Troubleshooting information for this humidiﬁ er is

located in the Vapor-logic Installation and Operation Manual shipped with your humidiﬁ er. If you do not have this manual, go to www. dristeem.com to download or order a copy.

Supply water

☐ RO ☐ DI ☐ Softened ☐ Potable Grains hardness ______________________________________ ☐ Hot* ☐ Cold Water pressure ________________ psi (must be between 25 and 80 psi [172 and 582 kPa])

☐ Supply water piping is 3/8" pipe thread (DN10) minimum Float adjustments (DI system)

____________________________________________________

* If using heated supply water, disconnect the supply water

line to the water tempering device at the ﬁ ll manifold and reconnect it to a cold water supply. This will ensure that the water tempering device operates properly.

Gas supply

☐ Natural ☐ LP Manifold pressure _____ inches wc ( _____ kPa) Supply shutoff valve distance ___________________________ Supply line size _______________________________________

Flue piping

Class ________________________________________________ Size _________________________________________________ Rise _________________________________________________ Run _________________________________________________ ☐ Slight pitch toward drip tee ☐ Termination point capped and covered Power venter location __________________________________ Barometric damper location ____________________________

Job site representation:

________________________________________________________

Job name _______________________________________________

Program code ___________________________________________

DriSteem rep ____________________________________________

Required clearances

☐ Top cover removal 18" (457 mm)

☐ Distance vent box to combustible 30" (762 mm)

☐ Cleanout plate side 36" (914 mm)

Wiring

☐ Control transmitter

Gauge _________

☐ Shield

☐ High limit duct humidistat

Gauge _________

☐ Shield

☐ Airﬂ ow proving switch

☐ Power vent

☐ Combustion air damper

☐ Area-type fan

☐ External fault contact

☐ Twisted pair connection between boards

(for multiple units only)

Steam pipe

Outlet size ___________________________________________

☐ Flange

☐ Hard pipe

☐ Insulated

☐ Steam hose (do not insulate)

Rise _________________________________________________

Run _________________________________________________

☐ Pitched back to humidiﬁ er

☐ 45° angles used in piping

Continued

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 59

Start-up commissioning checklist

OPERATION

Dispersion

☐ Ultra-sorb

☐ Rapid-sorb

☐ Single tube

☐ Single tube with drain

☐ Area-type fan

Condensate/drain piping

Water seal height of dispersion system

____________________________________________________

☐ Air gap

☐ Condensate return to tank

☐ Drane-kooler

Cold-start burner ignition

Burner 1 lights after: ☐ First try ☐ Second try ☐ Third try

Burner 1 color after 15 minutes: ☐ Blue ☐ Orange ☐ Red-orange

Burner 2 lights after: ☐ First try ☐ Second try ☐ Third try

Burner 2 color after 15 minutes: ☐ Blue ☐ Orange ☐ Red-orange

Burner 3 lights after: ☐ First try ☐ Second try ☐ Third try

Burner 3 color after 15 minutes:

☐ Blue ☐ Orange ☐ Red-orange

Burner 4 lights after: ☐ First try ☐ Second try ☐ Third try

Burner 4 color after 15 minutes: ☐ Blue ☐ Orange

☐ Red-orange

Safety testing to verify function

Low water test ________________________________________

High humidity limit test _________________________________

Airﬂ ow test ___________________________________________

Aquastat test _________________________________________

Additional comments

__________________________________________________

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 60

MAINTENANCE

Inspection recommendations

USER INSPECTION EVERY 30 DAYS

• Vent connector is in place, sloping upward and is physically sound without holes or excessive corrosion.

• Physical support of the appliance is sound without sagging, cracks, or gaps between ﬂ oor stand or tank ﬂ anges.

• There are no obvious signs of deterioration of the appliance.

• Burner ﬂ ame is primarily orange in color — up to a 1/4" (6 mm) from the surface of the burner.

• Check for alarms and messages through the message/alarm log. See Vapor-logic controller instruction manual for description and troubleshooting.

• Check ignition sequence:

1. Ignitor energized - visual orange glow noted at the burner sight glass

2. Gas valve on (click) 2-3 seconds after ignitor glows

3. Flame on the burner

4. Flame rectiﬁ cation - ﬂ ame is sensed

5. Burner stays on - visual inferred glow (brilliant orange)

• Replace ignitor at regular intervals

1. When cycle count exceeds 80,000

• Notiﬁ cation will appear on Vapor-logic controller

• First alarm at 80,000 cycles

• Second alarm and shut-off at 100,000 cycles

• Replacement veriﬁ cation required to re-start cycle count

2. If signs of cracking or uneven heating are noted during ignition sequence

check, or if unit fails to ignite after three attempts.

Note: If replacing the ignition ignitor, reset the GTS ignitor counter through

the Vapor-logic controller setup screen. See the Vapor-logic Installation and Operation Manual for instructions.

WARNING

Shutdown procedure

To prevent severe personal injury or death from electrical shock, ﬁ re, or explosion, follow this shutdown procedure before performing service or maintenance procedures on this humidiﬁ er.

1. Use Vapor-logic keypad/display, change the control mode to Standby.

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

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

4. Close gas shut-off valves.

Table 54-1: GTS products of combustion

guidelines (at 100% demand)

CO2%

O2% 4 – 7 %

Flue temperature

Less than 40 ppm; 0 or low single digits is typical

8-10%; 9% is typical for natural gas, 10% is typical for LP gas

Less than 400°F plus room temperature (Less than 204.4°C plus room temperature)

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Burner efﬁ ciency

Troubleshooting

The Vapor-logic Installation and Operation Manual that shipped with your humidiﬁ er is a

comprehensive operation manual. Refer to it for troubleshooting information.

Greater than 80%

Page 61

Inspection recommendations

APPLIANCE SYSTEM INSPECTED AT A MINIMUM ONCE A YEAR BY A QUALIFIED SERVICE PERSON (ANNUAL PRE-SEASONAL INSPECTION)

• Proper ﬁ eld operation of burner. Measure CO, CO2%, O2%, ﬂ ue temperature, and burner efﬁ ciency at 100% demand with the tank at a boil. Verify that measurements are within the guidelines described in Table 55-1; if not, consult DriSteem.

• Flue passageways external to the appliance, such as vent connector and chimney, are clear and free of obstructions.

• Upgrade Vapor-logic software to the latest version.

• At least annually, inspect the ventilation apparatus, ensuring the following:

– Vent connector is in place, sloping upward, and physically sound

without holes or excessive corrosion.

– Physical support of the appliance is sound without sagging, cracks, or

gaps between ﬂ oor stand or tank ﬂ anges.

– Adequate combustion and ventilation air in accordance with Section

5.3, Air for Combustion and Ventilation, of the National Fuel Gas Code, ANSI Z223.1 or applicable provisions of governing codes.

Canadian installations must be installed in accordance with sections

7.2, 7.3, and 7.4 of the CAN/CGA.B149 Installation Codes and all authorities having jurisdiction.

MAINTENANCE

REPLACEMENT PARTS

When servicing or repairing this equipment, use only DriSteem-approved service replacement parts. Complete replacement part lists are on Pages 62 through 69. Refer to the rating plate on the GTS humidiﬁ er for complete unit model number, serial number, and company address. Any substitution of parts or controls not approved by DriSteem will be at owner’s risk and will void the warranty.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 62

MAINTENANCE

Burners

BURNER ASSEMBLIES AND HEAT EXCHANGER TUBES

This is not a regular maintenance item, but if the heat exchanger tubes contain carbon deposits, soot, or other residue, clean as follows:

1. Follow shutdown procedure on Page 54.

2. Remove gas train shroud.

3. Disconnect wiring to blowers, flame sensors, gas valves, and ignition controllers. Remove burner assemblies (each assembly is mounted with four bolts).

4. Remove vent box.

5. Use a 6" (150 mm) flue brush with a 24" (600 mm) extension and reversible drill. Work brush in and out of all combustion chambers.

Note: To ease reassembly, disconnect components from one burner

assembly at a time, and clean each corresponding combustion chamber individually.

WARNING

Respiratory hazard

When cleaning burners with compressed air, wear appropriate respiratory protection. Failure to do so may cause severe bodily injury.

Note: Soot and carbon deposits may indicate a combustion problem that needs to be corrected. Consult the factory.

6. Remove loose deposits and residue that falls into rear header with vacuum cleaner and hose extension.

7. Inspect 1½" (DN40) return tubes. Clean if necessary.

8. Run thin brush between turbulator and tube wall on all four sides.

9. Reinstall burner assemblies and gaskets, vent box and gasket, all electrical wiring, gas train shroud, and pressure switch connections.

MAINTENANCE FREQUENCY

Under normal use conditions, the burner(s) should not need cleaning for a minimum of ﬁ ve years. However, depending on the operating environment, the burner(s) may require periodic cleaning to remove accumulated materials. Failure to clean burners can result in reduced unit capacity. Use sealed combustion in dirty environments. See burner maintenance instructions below.

BURNER MAINTENANCE INSTRUCTIONS

To service the burner system, clean both the blower and the burner. Remove the blower(s) from the system and clean dust from the wheel. Remove the burner(s) for cleaning. Removing and cleaning one burner at a time eases reassembly. To dislodge particulate matter from the burner surface matrix, use compressed air (100 psig [700 kPa] maximum). Keep the air nozzle about 2" (50 mm) from the burner’s surface, blowing air perpendicular to the burner surface while moving the nozzle back and forth lengthwise. This dislodges particles trapped in the matrix, pushing them back inside the burner. Avoid blowing air across the surface, which tends to have a destructive effect on the burner surface. Allow particulate matter to fall from the burner through the air/gas inlet. To assist in removing the particulate matter, use a vacuum at the burner’s air/gas inlet.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 63

Tap/softened water

MAINTENANCE

WATER QUALITY RECOMMENDATIONS

The best way to determine how often your particular system needs maintenance is to remove the probe plate and inspect it for mineral deposits after 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

• Light to moderately hard water (2 to 10 grains hardness per gallon [35 mg/L to 170 mg/L]) requires:

– Annual cleaning – Regular skimming

• High mineral content water (more than 10 grains hardness per gallon [more than 170 mg/L]) requires:

– Cleaning frequency determined by use and water quality – Regular skimming – Periodic drain and ﬂ ush cycles

• Softened water dramatically reduces mineral accumulation inside tap/ softened water models.

Humidifier De-scaling solution

Scale buildup on humidiﬁ er heat exchangers 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_1405

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

ADJUSTING SKIM DURATION

The skim time duration determines the quantity of water skimmed with each ﬁ ll cycle. Skim time is ﬁ eld adjustable using the Vapor-logic keypad.

Each time the GTS reﬁ lls, it ﬁ lls to an elevation near the lip of the skim/ overﬂ ow ﬁ tting. A portion of the reﬁ ll water then ﬂ ows to the drain carrying most of the minerals left by the previous evaporating cycle. This reduces the mineral concentration, thereby reducing the frequency of cleaning needed.

The heated water that ﬂ ows to the drain is an operational cost. Cleaning the humidiﬁ er also is an operational cost. Therefore, DriSteem recommends that the user observe and adjust the skimming quantity to achieve a balance between minimizing mineral buildup and conserving heated water.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 64

MAINTENANCE

Tap/softened water

COOL DOWN PROCEDURE

Before performing any maintenance, allow the tank to cool down.

• Insulated and uninsulated tanks will have hot surfaces.

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

• Models with a standard drain valve:

1. Manually open the drain valve by moving the valve lever located on the

back of the drain valve to the manual open position.

2. The ﬁ ll valve eventually opens.

3. Let the ﬁ ll water run until the tank is cooled; then shut off the ﬁ eld-

installed manual supply water shut-off valve.

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

• For models without a manually operated drain valve, use the keypad to perform the cool down process.

1. From the Main menu, enter the Tank Status submenu.

2. Change mode to Drain, and allow approximately half the water to drain

out of the tank.

3. Change the mode back to Auto; the ﬁ ll valve opens and the humidiﬁ er

cools down.

4. When the ﬁ ll valve closes, go back into Drain mode, and allow the tank

to drain completely. The humidiﬁ er should be cool enough to work on.

Note: For more information about using the keypad, see the

Vapor-logic Installation and Operation Manual.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 65

Tap/softened water

INSPECTION AND MAINTENANCE

1. Annually (also recommended when maintenance is performed)

• Inspect tank, piping, and gaskets for water and gas leaks.

• 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. – Redundant low water level probe

2. Seasonally (or as required, depending on water quality)

• Clean tank – Remove cleanout plate and dispose of any loose scale that has

collected in the tank. Do this before the scale buildup reaches the bottom of the heat exchanger.

– Inspect the area inside the tank in front of the drain valve ﬁ tting and

thoroughly clean all scale and mineral buildup from that area.

• Dismantle and clean drain valve and associated piping

• Clean the probes – Access the probe assembly either from the electrical panel or by

removing the roof panel above the electrical area.

– Disconnect the probe plug and cable assembly and unscrew the

probe rod assembly from the humidiﬁ er probe housing.

– Inspect the probe housing and clean, ensuring that all the housing

passageways are clear. Remove the housing from the tank by

removing the cover plate from the tank. – The scale should ﬂ ake off easily from the probe assembly rods. – The bottom 3/8" (10 mm) of each rod is the sensing portion; clean

these areas with a wire brush, abrasive pad, or steel wool. – Inspect the composite plastic probe rod assembly for any signs

of cracking, roughness, or deterioration. If found, replace probe

assembly. – Reassemble the probe assembly.

MAINTENANCE

WARNING

Follow the shutdown procedure

Follow the shutdown procedure on Page 54 before performing service or maintenance procedures on this humidiﬁ er. Failure to follow the shutdown procedure could cause electrical shock, ﬁ re, or explosion and severe personal injury or death.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 66

MAINTENANCE

Tap/softened water

• Clean the skim/overﬂ ow port – Water should drain from the skimmer drain pipe after each ﬁ ll cycle.

This should be veriﬁ ed visually by a weekly inspection.

– Loosen deposits in and around the skimmer/overﬂ ow port with a

long tool such as a screwdriver.

– If ﬂ ow through the water seal/P-trap is diminished due to mineral

accumulation:

- Remove the water seal piping from the humidiﬁ er and ﬂ ush out.

- Replace the water seal with new piping if the minerals have

hardened in the water seal.

• Clean the low water cutout probe — Remove the shroud cover and inspect the probe rod for mineral accumulation. The rod is located on the top of the tank near the back. Use stainless steel wool to clean the probe.

• Inspect blower motor — A lubrication port is not provided, therefore lubrication is not required.

• Remove dust — Using a vacuum, remove all dust from areas around the motor, vent fan(s), and louvers that allow air to the shrouded area.

• When the maintenance requirements are complete: – Replace cleanout plate and tighten the nuts on the plate. Torque the

nuts to 25 to 35 in-lb (2.8 to 4.0 N-m).

– Verify that the probe rod holder is secure and that the probe plug

and cable assembly are plugged into the probe rod holder. – Verify that the drain valve assembly is in the closed position. – Replace and secure all covers and doors. – Turn on the water supply. – Turn on the electrical power. – Turn on gas. – Do not leave humidiﬁ er unattended. Allow the humidiﬁ er to cycle

through multiple ﬁ ll cycles and verify that the humidiﬁ er cover,

cleanout plate, and probe holder gasket are not leaking.

Important:

Minimum supply water pressure is 25 psi (172 kPa).

3. Off-season maintenance

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

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

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 67

RO/DI water option

RO/DI WATER QUALITY RECOMMENDATIONS

• Verify regularly that water processing equipment is operating correctly. The presence of chlorides in improperly processed DI water can cause pitting and failure of the tank and heat exchanger. Your DriSteem warranty does not cover damage caused by chloride corrosion.

• GTS humidiﬁ ers with the RO/DI water option do not require regular cleaning, although regular inspections are advised.

• GTS humidiﬁ ers with the RO/DI water option do not require skimming or draining and ﬂ ushing to remove precipitated minerals. However, at the end of a humidiﬁ cation season, drain all DI humidiﬁ ers either by manually opening the drain valve or by programming the humidiﬁ er to automatically drain at end-of-season (electric ﬁ ll and drain valve required).

MAINTENANCE

WARNING

Follow the shutdown procedure

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 68

MAINTENANCE

RO/DI water option

COOL DOWN PROCEDURE

Before performing any maintenance, allow the tank to cool down.

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.

• Tanks will have hot surfaces.

• Models with a standard drain valve:

– Manually open the drain valve. – The ﬂ oat valve 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.

• For models without a manually operated drain valve, use the keypad to perform the cool down process.

– From the Main menu, enter the Tank Status submenu. – Change mode to Drain, and allow approximately half the water to drain

out of the tank.

– Change the mode back to Auto; the ﬁ ll valve opens and the humidiﬁ er

cools down.

– When the ﬁ ll valve closes, go back into Drain mode, and allow the tank

to drain completely. 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.

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 69

RO/DI water option

INSPECTION

1. Annually (also recommended when maintenance is performed)

• 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 cutoff switch – Redundant low water cutoff switch

• Inspect tank and gaskets for leaks.

• Verify that the ﬂ oat valve is closing off. If the ﬂ oat valve will not shut off, there may be particulate on the valve seat, or the EPDM seat may be worn and in need of replacement.

• As long as mineral-free water is used in the GTS, no cleaning or ﬂ ushing of the humidiﬁ er should be necessary.

MAINTENANCE

WARNING

Prevent wiring errors

When servicing controls, before disconnecting, label all areas. Wiring errors can cause explosion or ﬁ re, resulting in severe bodily injury, death, or signiﬁ cant property damage.

2. Seasonally (or as required, depending on water quality)

• Inspect blower motor. Since a lubrication port is not provided, lubrication is not required.

• Remove dust — Using a vacuum, remove all dust from areas around the motor, vent fan(s), and louvers that allow air to the shaded area.

3. Off-season maintenance

• Perform a complete inspection of the following: – Float valve – Low water cutoff switch – Redundant low water cutoff switch – Humidiﬁ er tank and gaskets – Heat exchanger

• Drain humidiﬁ er tank and rinse.

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

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 70

REPLACEMENT PARTS

GTS humidiﬁ er

FIGURE 64-1: GTS REPLACEMENT PARTS

OM-1243

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 71

REPLACEMENT PARTS

GTS humidiﬁ er

Table 65-1: GTS replacement parts

No. Description Part no. No. Description Part no.

1 Tank Consult factory 19 Plug, 3/4" 250192-002

2 Heat exchanger Consult factory 20 Plug, 1½" 250681-002

3 Heat exchanger gasket Consult factory 21 Redundant probe * 405726-001

4 Flue box Consult factory 22 Bushing 405805-004

5 Probe plate 165302-005 23 Adapter weld * 168010-005

6 Probe plate gasket 308235-006 24 Probe plug * 406050-100

7 Cleanout plate 165479-001 25 Probe assembly * 406303-010

8 Cleanout plate gasket 308235-005 26 Probe gasket 309750-004

9 DI ﬂ oat valve assembly ** Consult factory 27 DI ﬂ oat switch ** 408420-002

10 Burner gasket 308230-006 28 DI ﬂ oat weld ** 167789

11 Burner Consult factory 29 Redundant DI ﬂ oat weld ** 167789-002

12 Blower gasket 308230-007 30 Temperature sensor bracket 128666-001

13 Blower 405800-003 31 Temperature sensor 405760

14 Gas valve 405800-007 32 Temperature sensor gasket 308230-011

Ignitor, 120 V US/Canada 405718 33 Gas manifold weld *** Consult factory

Ignitor, 230 V Europe 405718-001 34 Sealed combustion assembly *** Consult factory

16 Sight glass bracket 128661 35 Pallet/shroud components *** Consult factory

17 Sight glass 405720

18 Flame sensor 405725

* Tap/softened water GTS only ** GTS with RO/DI water option only *** Not shown

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 72

REPLACEMENT PARTS

Fill, drain, and blocked ﬂ ue sensor

FIGURE 66-1: GTS FILL, DRAIN, AND BLOCKED FLUE REPLACEMENT PARTS

OM-1244

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 73

Fill, drain, and blocked ﬂ ue sensor

Table 67-1: GTS fill, drain, and blocked flue sensor replacement parts

No. Description Part no.

1 Water tempering valve 505090

2 Water tempering tank Consult factory

3 Drain hose cuff 305389-003

4 Top water seal tube 204812-201

5 Bottom water seal tube 204812-202

6 Fill valve, DI EOS models ** 505086

7 Fill valve, tap/softened water models * 505095

8 Strainer * 300050

9 Blocked ﬂ ue sensor 406190

REPLACEMENT PARTS

10 Flexible tubing 405722

11 Copper tubing 100038-025

12 Compression elbow 405723

13 Drain valve, tap/softened water models * 505075

14 Drain valve, DI-EOS models ** 193458

15 Hose clamp 700560-100

16 Adapter, NPT × C 204700

17 Fill hose *** Consult factory

18 Water tempering hose *** Consult factory

* Tap/softened water GTS only ** GTS with RO/DI water option only *** Not shown

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 74

REPLACEMENT PARTS

Electrical parts

FIGURE 68-1: GTS ELECTRICAL REPLACEMENT PARTS

Note: See Pages 68 and 69 for GTS Outdoor Enclosure replacement parts.

OM-7470

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 75

Electrical parts

Table 69-1: GTS electrical replacement parts

No. Description Part no.

1 Ground wire lug 409250-003

2 Vapor-logic main board 183504-014

Ignition module (for North America) 405800-006

Ignition module (for Europe) 405800-005

4 Low water board * 405726 *

Transformer (for North America) 408965-001

Transformer (for Europe) 408985

6 Relays, Sockets, time delay Consult factory

7 Wire channel 408999-001

REPLACEMENT PARTS

8 DIN-rail end bracket 408252-006

9 Circuit breaker, 2-pole (for Europe only) 406775-004

10 Circuit breaker, single-pole (for SDU option only) 406775-009

11 Terminal strip Consult factory

* Tap/softened water GTS only

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 76

REPLACEMENT PARTS

Outdoor Enclosure

FIGURE 70-1: OUTDOOR ENCLOSURE ELECTRICAL REPLACEMENT PARTS

Note: For European models, refer to Fisair diagrams

OM-7471

Not shown

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 77

Outdoor Enclosure

Table 71-1: Outdoor Enclosure electrical replacement parts

No. Description Part no.

1 Vapor-logic display with back

Fan assembly (for North America) 185110-003

Fan assembly (for Europe) 185110-004

3 High limit stat 405800-065

Fan stat (for North America) 405800-067

Fan stat (for Europe) 405871-002

Heater stat (for North America) 405800-066

Heater stat (for Europe) 405871-001

6 Ground wire lug 409250-003

REPLACEMENT PARTS

7 Power block 408300-002

8 Circuit breaker 406775-005

9 Relays, sockets, time delay Consult factory

10 Heater assembly, 600W * 183502-044

12 DIN-rail end bracket 408252-006

* Not shown

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 78

EUROPEAN MODELS

European models only

This equipment has been tested by the Canadian Standards Association International to the Low Voltage, Gas Appliance, and EMC directives and has been certiﬁ ed by AFNOR for use in all EU countries.

AUTHORIZED COUNTRIES OF DESTINATION

GTS humidiﬁ ers bearing the CE mark are authorized for use in the European countries listed below.

Austria AT Greece GR Belgium BE Ireland IE Switzerland CH Iceland IS Germany DE Italy IT Denmark DK Luxembourg LU Spain ES Netherlands NL Finland FI Norway NO France FR Portugal PT United Kingdom GB Sweden SE

APPLIANCE CATEGORY

In relation to the country of destination, this humidiﬁ er is classiﬁ ed under one of the following boiler categories: category I2H, I2L, I2E, I

2E+

, I

2LL

2ES

2Fi

2ER

3B/P

, I

Electrical warning label

Location: Control cover, shroud Deﬁ nition: Electrical shock hazard

Important:

This equipment is for use with second family (G20, G25) natural gases; and third family (G30, G31) propane gas. Contact your distributor before converting to another group or supply pressure.

See the unit data plate for the speciﬁ c category of your appliance.

Table 72-1: Gas specifications for European models

Volumetric ﬂ ow rate by gas category

GTS

2H-G20-20 mbar

model

2E-G20-20 mbar

2Es-G20-20 mbar

100 2.31 m

200 4.62 m3/h 5.64 m3/h 4.62-5.64 m3/h 2.62 m3/h 2.98 m3/h 163 °C -0.025 mbar 13.8 g/s

300 6.93 m3/h 8.46 m3/h 6.92-8.46 m3/h 3.93 m3/h 4.47 m3/h 191 °C -0.025 mbar 20.7 g/s

400 9.24 m3/h 11.28 m3/h 9.24-11.28 m3/h 5.24 m3/h 5.96 m3/h 218 °C -0.025 mbar 27.6 g/s

500 11.55 m3/h 14.10 m3/h 11.55-14.10 m3/h 6.55 m3/h 7.45 m3/h 218 °C -0.025 mbar 34.5 g/s

600 13.86 m3/h 16.92 m3/h 13.85-16.92 m3/h 7.86 m3/h 8.94 m3/h 218 °C -0.025 mbar 41.4 g/s

700 16.17 m3/h 19.74 m3/h 16.17-19.74 m3/h 9.17 m3/h 10.43 m3/h 218 °C -0.025 mbar 48.3 g/s

800 18.48 m3/h 22.56 m3/h 18.47-22.56 m3/h 10.48 m3/h 11.92 m3/h 218 °C -0.025 mbar 55.2 g/s

2L-G25-25 mbar 2LL-G25-20 mbar 2Ei-G25-25 mbar

/h 2.82 m3/h 2.31-2.82 m3/h 1.31 m3/h 1.49 m3/h 121 °C -0.025 mbar 6.9 g/s

2E+G20/G25-20/25 mbar

2ER-G20/G25-20/25 mbar

3B-G30-30 mbar 3B-G30-50 mbar

3P-G31-30 mbar 3P-G31-37 mbar 3P-G31-50 mbar

Average ﬂ ue

temperature

Minimum

draught

requirement

Mass ﬂ ow

rate of

combustion

products

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 79

EUROPEAN MODELS

European models only

Table 73-1: GTS models, capacities, electrical specifications, and weights, European models

GTS

model

GTS-100 34 0-24 0-29

GTS-200 68 0-48 0-59

GTS-300 102 0-72 0-88 DN80 (3") ﬂ ange DN180 (7") 385 205 4.0

GTS-400 136 0-96 0-117 DN80 (3") ﬂ ange DN180 (7") 385 205 4.0

GTS-500 170 0-120 0-147 DN100 (4") ﬂ ange DN200 (8") 500 270 5.5

GTS-600 204 0-144 0-176 DN100 (4") ﬂ ange DN200 (8") 500 270 5.5

GTS-700 238 0-168 0-205 DN100 (4") ﬂ ange DN250 (10") 635 320 7.0

GTS-800 272 0-192 0-234 DN100 (4") ﬂ ange DN250 (10") 635 320 7.0

* Maximum steam capacities listed may be as much as 10% lower than the given values due to local variations in the Wobbe index of G20 and

G25 gases.

Steam

capacity per

hour in kg*

P = (kW) Q = (kW) Steam outlet

DN50 (2") BSPT

or DN50 hose

DN50 (2") BSPT

or DN50 hose

Recommended ﬂ ue

size (Class B)

DN125 (5") 320 170 2.8

Operating

weight in kg

Shipping weight

in kg

Full load

amps

CAPACITY NOTES

• At sea level, 402 kJ are required to raise the temperature of one kilogram of water from 4 °C to 100 °C.

• An additional 2257 kJ are required to change the state of one kilogram of 100 °C water to vapor.

• Another factor to consider is condensation steam loss from piping. See Table 33-2.

LP GAS

All models operate at rated kW input.

OPERATING CHARACTERISTICS

• Unit is capable of operating in ambient conditions of 5 °C to 40 °C.

• Unit is capable of operating in ambient conditions between 30% RH and 95% RH (noncondensing).

• NOx class 5

GAS SUPPLY PRESSURE

20 or 25 mbar for natural gas (depending on gas group), and 30, 37 or 50 mbar for propane gas (depending on gas group)

PMS (ALL UNITS)

7.0 bar

CAUTION

Install connection for gas pressure test gauge

Gas pressure to the humidiﬁ er controls must never exceed 6 kPa (60 mbar), or the gas valve will become damaged and require replacement. Install a 1/8" pipe thread (DN6) plugged tapping, accessible for test gauge connection, immediately upstream of the gas supply connection to the appliance.

ELECTRIC SUPPLY

230V, 667W to 2415W (see data plate)

MAX INLET WATER TEMPERATURE

90 °C

GTS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 80

ARRANTY

Expect quality from the industry leader

Since 1965, DriSteem has led the industry with innovative methods for humidifying and cooling air with precise control. Our focus on ease of ownership is evident in the design of the GTS humidiﬁ er, which features cleanable, stainless steel construction. DriSteem also leads the industry with a Two-year Limited Warranty and optional extended warranty.

For more information

www.dristeem.com [email protected]

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

DRI-STEEM Corporation

a subsidiary of Research Products Corporation DriSteem 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)

European ofﬁ ce: Grote Hellekensstraat 54 b B-3520 Zonhoven Belgium +3211823595 E-mail: [email protected]

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

DriSteem, Area-type, 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.

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. Excluded from the Limited Warranty are all consumable and wear and tear items such as cylinders, membranes, ﬁ lters, or media replacements. These items are subject to usual wear and tear during usage.

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.

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

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

Form No. GTS-IOM-EN-REVL-0617 Part No. 890000-101 Rev L