DriSteem GTS LX Series, GTS LX-50, GTS LX-75, GTS LX-100, GTS LX-200 Installation, Operation And Maintenance Manual

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GTS

Gas-to-Steam Humidifier LX Series

Installation, Operation, and Maintenance Manual

WARNING

Fire or explosion hazard

If the information in this manual is not followed exactly, a ﬁre or explosion could result, causing property damage, personal injury, or death. Do not store or use gasoline or other ﬂammable vapors and liquids in the vicinity of this or any other appliance.

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 ﬁre department.

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

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

Page 2

Page 3

Warnings and cautions

WARNING

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

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 ﬂoor because gas can be heavier than air and settle on the ﬂoor.

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 ﬁre department.

C. Do not use this appliance if any part has been under water.

Immediately call a qualiﬁed 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.

Attention installer

Read this manual before installing, and leave this manual with product owner. This product must be installed by qualiﬁed 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 ﬁre.

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:

CAUTION

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

Continued

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 4

Warnings and cautions

WARNING

Carbon monoxide, ﬁre, explosion, and electrical shock hazards

Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poisoning, ﬁre, 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 qualiﬁed installer, service agency, local gas supplier, or your distributor or branch for information or assistance. The qualiﬁed installer or agency must use only factory authorized and listed kits or accessories when modifying this product.

• Inspect humidiﬁer and accessories upon arrival for damaged, missing, or improper parts. If there is a problem, call your local DriSteem Representative/Distributor.

• Application of this humidiﬁer should have special attention given to vent sizing and material, gas input rate, and unit sizing. Improper installation or misapplication of the humidiﬁer 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 ﬁre extinguisher available during start-up, adjustment procedures, and service calls.

• Do not lift humidiﬁer by gas controls, gas manifold, ﬁre 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 humidiﬁer. 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 humidiﬁer name plate for the gas type indicated (natural gas or propane gas). Supply the humidiﬁer only with the gas type indicated, or burner failure will result. To convert the humidiﬁer 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 ﬂammable atmospheres laden with grain dust, sawdust, or similar airborne materials.

• Installation of humidiﬁer 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-ﬁred unit in areas where chlorinated, halogenated, or acid vapors are present in the atmosphere.

• Locate the humidiﬁer in an area clear of combustible materials, gasoline, and other ﬂammable vapors and liquids.

Continued

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 5

Warnings and cautions

WARNING

Carbon monoxide, ﬁre, 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.

• Do not install the humidiﬁer indoor directly on carpeting, tile, or other combustible material other than wood ﬂooring. Outdoor units may be installed directly on combustible ﬂooring or, in the U.S., on wood ﬂooring or Class A, Class B or Class C roof covering materials.

• Remove all shipping brackets and materials before operating the humidiﬁer.

• Do not locate humidiﬁer in a negative pressure space. Combustion products could be suctioned from the venting. See page 42.

• Humidiﬁer ﬂue gases must be vented to the outside atmosphere.

• Do not interfere, disable, or tamper with the devices monitoring the combustion gas discharge, including the ﬂue temperature and ﬂue pressure sensors. Only authorized and trained technicians should perform any service on these items.

• Do not interfere or tamper with any sealed components. Only authorized and trained technicians should perform any service on these items.

• This humidiﬁer is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

• Children should be supervised to ensure that they do not play with the humidiﬁer.

• The GTS humidiﬁer LX series must be vented and supplied with combustion and ventilation air as described in this IOM. Ensure the vent and air piping and the combustion air supply comply with these instructions regarding vent, system, air system, and combustion air quality. Inspect ﬁnished vent and air piping thoroughly to ensure all are airtight and comply with the instructions provided and with all requirements of applicable codes. Failure to provide a properly installed vent and air system will cause severe personal injury or death.

• This humidiﬁer requires a special venting system. Use only approved stainless steel, PVC, CPVC, or polypropylene pipe and ﬁttings listed in this IOM. Failure to comply could result in severe personal injury, death, or substantial property damage.

• Do not connect any other appliance to the vent pipe or multiple humidiﬁers to a common vent pipe. Failure to comply could result in sever personal injury, death, or substantial property damage.

• The ﬂue gas vent shall not pass through any air duct or plenum. Do not insulate plastic ﬂue gas vent pipe.

• Do NOT mix components from different systems. The vent system could fail, causing leakage of ﬂue products. Mixing of venting materials will void the warranty.

• 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 humidiﬁer.

• 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).

Continued

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 6

Warnings and cautions

WARNING

Hot surfaces and hot water

This steam humidiﬁcation 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 humidiﬁcation system. Failure to disconnect electrical power could result in ﬁre, electrical shock, and other hazardous conditions. These hazardous conditions could cause property damage, personal injury, or death.

Follow the shutdown procedure on Page 60 before performing service or maintenance procedures on any part of the system.

Continued

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 7

Warnings and cautions

CAUTION

Hot discharge water

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

The humidiﬁer is equipped with integrated water drain tempering that needs make-up water no greater than 90°F (32 °C) in order to function properly. Make sure the water supply to the humidiﬁer remains open during draining.

Excessive supply water pressure

Supply water pressure greater than 80 psi (550 kPa) can cause the humidiﬁer to overﬂow.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 8

Table of contents

PRODUCT OVERVIEW .........................................................8

Supply water guidelines .................................8

Universal water .......................................8

Water level control ....................................9

Models, capacities, electrical specifications, and weights ...........11

SPECIFICATIONS........................................................... 11

Indoor dimensions .......................................12

INSTALLATION ............................................................ 14

Location and clearance recommendations ......................14

Optional floor stand mount (Models 50, 75,100, and 150 only) ......16

Optional wall mount (Models 50, 75 and 100 only) ...............18

Outdoor enclosure .......................................19

Overview ..........................................19

Operation ..........................................20

Dimensions .........................................21

Location ...........................................22

Mounting ..........................................23

Freeze Protection Piping ................................25

Venting ............................................26

Wiring ...............................................27

Piping ...............................................28

Overview ..........................................29

Connection sizes .....................................30

Condensate return ....................................31

Supply water and drain overflow connections .................33

Supply water and drain ................................34

Flue gas condensate ..................................36

Gas ..............................................38

General venting ........................................42

Room air combustion ..................................42

Sealed combustion (combustion air from outside the building). . . . . . 46

Guidelines .........................................47

Vertical venting .........................................50

Sidewall venting ........................................52

Determine a location ..................................52

Sidewall installation ...................................54

Selecting a dispersion location ..............................55

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 9

Table of contents

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

Start-up ..............................................56

Start-up checklist .....................................56

Start-up procedure ....................................57

Start-up commissioning checklist .............................58

MAINTENANCE ........................................................... 60

Inspection recommendations ................................60

Replacement parts ....................................61

Water quality and maintenance .............................62

Water quality recommendations ..........................62

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

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

Heat exchangers .....................................67

Combustion assemblies ...................................68

Removing the combustion assembly ........................68

Maintenance frequency ................................68

Burner maintenance instructions ...........................69

Ignitor and flame sense rod .............................69

REPLACEMENT PARTS ....................................................... 70

GTS humidifier (Models LX-50 through LX-150) ...................70

GTS humidifier (Models LX-200, LX-250, and LX-300) ..............72

GTS humidifier (Models LX-400 through LX-600) ..................74

Electrical parts .........................................76

Outdoor enclosure .......................................78

ATTENTION INSTALLER

Original Instructions

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

DriSteem Technical Support 800-328-4447

Website:

Documents can be viewed, printed or ordered from our website, www.dristeem.com.

DriCalc sizing and selection software:

DriCalc® is our humidiﬁcation system sizing and selection software, which can be accessed from dristeem.com.

EUROPEAN MODELS........................................................ 80

Authorized countries of destination ........................80

Appliance category ...................................80

WARRANTY .............................................................. 86

Two-year Limited Warranty ..............................86

Extended warranty ....................................86

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 10

The GTS humidiﬁer LX series burns either natural or propane gas to heat and boil ﬁll water into steam for humidiﬁcation. The unit has either one or two burners that ﬁre into a heat exchanger submerged in a tank of water. When there is a call for humidity, the burners ﬁre and generate steam until the call for humidity ends.

UNIVERSAL WATER

DriSteem's GTS humidiﬁer LX series incorporates universal water control for use with any water type (well, tap, softened, DI or RO water). There is no need to change control conﬁgurations based on water type when ordering equipment or retroﬁtting to ﬁt new water sources in the ﬁeld. The water level control algorithm monitors water quality and any changes over time to assure the user of accurate control no matter the type of water that is used.

PRODUCT OVERVIEW

Product overview

Supply water guidelines

FIGURE 8-1: GTS HUMIDIFIER LX SERIES

Duct dispersion option shown: Ultra-sorb Model LV

Supply water guidelines

Supply water quality is an important component of humidiﬁer reliability and maintenance.

Examples:

• Corrosive water can decrease the service life of the humidiﬁer.

• Excessive water hardness can increase the humidiﬁer maintenance requirements.

To maximize humidiﬁer service life and minimize humidiﬁer maintenance, DriSteem has established guidelines for supply water. See Table 8-1.

Table 8-1: DriSteem supply water guidelines

Chlorides*

Tap water RO/DI water Softened water

* Damage caused by

chloride corrosion is not covered by your DriSteem warranty.

Total hardness

Tap water < 500 ppm

< 50 ppm

< 5 ppm

< 25 ppm

(29 gpg)

Steam outlet

Combustion air intake

Flue gas vent

Control components

Secondary heat exchanger

Blower

Gas valve

Supply water connection

Open drain

Drain

Air gap

Primary heat exchanger

Electrical ﬁeld connection

Flue gas condensate

Gas connection

OM-7942

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Tap water RO/DI, softened water

6.5 to 8.5

7.0 to 8.0

Silica < 15 ppm

Supply water outside of the guidelines may void your DriSteem warranty. Please contact your DriSteem Representative or DriSteem Technical Support if you need advice.

Page 11

Product overview

WATER LEVEL CONTROL

The LX series of GTS humidiﬁers control water level using a three-rod probe (see Figure 9-1). All water types and conductivities work with the universal water system. The user does not need to select a new water type or change hardware to change water types. Additional valves and Vapor-logic algorithms measure and control the water level for optimum efﬁciency and low water safety conditions. Vapor-logic automatically provides a steady output while maintaining the water level between the bottom and middle probes.

FIGURE 9-2: GTS HUMIDIFIER LX SERIES (MODELS LX-50 THROUGH LX-150)

Steam outlet

Combustion air pipe

Flue gas vent

Secondary heat exchanger

Water level sensing probe

Control components

Overﬂow outlet

FIGURE 9-1: WATER LEVEL CONTROL

Water level is controlled electronically using three probes

Overﬂow/foam detection

Full

Low

VLC-OM-030

Blower

Gas valve

Supply water connection

Drain

Air gap

Open drain

Note: Dashed lines indicate supplied by installer

Primary heat exchanger

Electrical ﬁeld connection

Flue gas condensate

Gas connection

OM-7943

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 12

Product overview

FIGURE 10-1: GTS HUMIDIFIER LX SERIES (MODELS LX-400 THROUGH LX-600)

Steam outlet

Flue gas vent

Secondary heat exchanger

Blower

Combustion air pipe

Gas valve

Drain

Open drain

Air gap

Water level sensing probe

Control components

Primary heat exchanger

Overﬂow outlet

Supply water connection

Electrical ﬁeld connection

Gas connection

Flue gas condensate

OM-7996

Note: Dashed lines indicate supplied by installer

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 13

SPECIFICATIONS

Models, capacities, electrical speciﬁcations, and weights

Table 11-1: GTS models, capacities, electrical specifications, turndown, and weights

GTS humidiﬁer

Maximum

GTS

model

LX-50 50 23 61 17.8 1.7 6 23 14 53 304 138 187 85 5:1 10 2.0 1.5

LX-75 75 34 91.5 26.8 2.5 9 34 14 53 304 138 187 85 6:1 12.5 2.0 1.5

LX-100 100 45 122 35.8 3.4 12 45 13 49 300 136 192 87 8:1 12.5 2.0 1.5

LX-150 150 68 183 53.6 5.1 18 68 25 95 450 204 242 110 6:1 25 2.5 2.0

LX-200 200 91 244 71.5 6.8 24 91 42 159 706 320 356 161 6.7:1 30 4.0 2.5

LX-250 250 113 305 89.4 8.5 30 114 42 159 706 320 356 161 8.3:1 30 4.0 2.5

LX-300 300 136 360 105.5 10 36 136 41 155 709 321 367 166 10:1 30 4.0 2.5

LX-400 400 181 488 143 13.5 48 182 80 303 1259 571 593 269 13.3:1 30 6.5 3.5

LX-500 500 227 610 178.8 16.9 60 227 80 303 1259 571 593 269 16.7:1 30 6.5 3.5

LX-600 600 272 720 211 20 72 273 78 295 1265 574 615 279 20:1 30 6.5 3.5

* For outdoor enclosures, see Table 26-1. ** Add approximately 60-90 lbs (27-41 kg) for packaging material.

steam

capacity

lbs/hr kg/h MBh kW m

Input

Water usage at maximum

capacity

gals/hrlitres/

Tank

volume

gals litres lbs kg lbs kg ratio lbs/hr

LX series*

Operating

weight

Shipping

(empty)

weight**

Turndown

Full load

120V

60 Hz

amps*

230V

50 Hz

LP GAS

All models operate at rated input

HIGH ALTITUDE

The input shown6 in Table 11-2 is derate when operating units at a high altitude. See the "Start-up procedure" on page 57 for adjusting oxygen levels on the LX series gas valve.

Important: See Pages 80 and 81 for additional European model speciﬁcations and capacity notes.

Table 11-2: 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

Input

derate %

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 14

SPECIFICATIONS

Indoor dimensions

FIGURE 12-1: LX MODELS 50 - 150 INDOOR UNIT DIMENSIONS

Side view Front view Top view

See "Indoor unit dimensions" on page 13-1.

OM-7946

FIGURE 12-2: LX MODELS 200 - 300 INDOOR UNIT DIMENSIONS

Side view Front view Top view

See "Indoor unit dimensions" on page 13-1.

OM-8014

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 15

Indoor dimensions

FIGURE 13-1: LX MODELS 400 - 600 INDOOR UNIT DIMENSIONS

Side view Front view Top view

SPECIFICATIONS

For outdoor dimensions see page 21.

OM-7998

Table 13-1: Indoor unit dimensions

Description

A Overall length 23.25 590 32.25 819 56 1422 56 1422

B Overall width 23.25 590 23.25 590 22 559 34 864

C Overall height 42.75 1085 42.75 1085 47 1194 53 1346

Flue position

E 4.4 112 4.4 112 5.61 143 5.6 142

F Flue diameter 3 76 3 76 4 102 6 152

Steam outlet position

H 5.3 135 5.3 135 6.9 175 7.4 188

J Steam outlet diameter 2 51 2 51 3 76 4 102

Gas inlet position

L 4.6 119 4.6 119 14.3 363 14.3 363

Drain position

N 4.5 114 4.5 114 8 203 8 203

Combustion air

P 2.7 69 2.7 69 14 363 14.5 368

Q Combustion air diameter 3 76 3 76 4 102 6 152

R Flue and combustion air height 5.5 140 5.5 140 5.6 142 7.1 180

Fill valve connection position

T 5.60 142 5.60 142 12.4 315 12.4 315

LX-50, LX-75, LX-100 LX-150 LX-200, LX-250, LX-300 LX-400, LX-500, LX-600

inches mm inches mm inches mm inches mm

4.3 109 4.3 109 8.7 221 14.5 368

3.8 97 3.8 97 7.1 180 7 178

9.2 234 9.2 234 16.6 4022 16.6 422

3.5 89 3.5 89 11 279 11 279

8.92 227 8.92 227 6.5 165 14.5 368

6.59 167 6.59 167 22.4 569 22.4 569

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 16

INSTALLATION

Location and clearance recommendations

FINDING A LOCATION

• Provide a level, solid foundation for the humidiﬁer.

• The GTS humidiﬁer LX series vent and air piping can be installed through the roof or through a sidewall. Use only vent/air piping methods described in this IOM. Locate the humidiﬁer as near as possible to an outside wall or accessible roof space so that the ﬂue pipe from the humidiﬁer is short, direct, and limited to wind exposure.

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

• Install the humidiﬁer in a location away (and protected) from drafts. Follow the instructions concerning combustion and ventilation air.

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

WARNING

Installation requirements

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

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

• See the combustion air and ﬂue gas venting section on page 42 for pipe termination locations and instructions.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 17

Location and clearance recommendations

FIGURE 15-1: LX SERIES CLEARANCE RECOMMENDATIONS (INDOOR UNITS)

18" (457 mm)

Indoor Unit

INSTALLATION

1" (25 mm)

30" (762 mm) for LX-50 through LX-150

54" (1372 mm) for LX-200 through LX-600

FIGURE 15-2: LX SERIES CLEARANCE RECOMMENDATIONS (OUTDOOR UNITS)

Outdoor Unit

36" (914 mm)

1" (25 mm)

36" (914 mm)

OM-7947

36" (914 mm)

36" (914 mm) for LX-50 through LX-150

54" (1372 mm) for LX-200 through LX-600

36" (914 mm)

OM-8012

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 18

INSTALLATION

Optional ﬂoor stand mount (Models 50, 75,100, and 150 only)

FIGURE 16-1: LX SERIES FLOOR STAND MOUNT ASSEMBLY FLOOR STAND MOUNTING INSTRUCTIONS

Model LX-150

1. Refer to Figure 17-1 for assembly of the floor stand.

2. Use the hardware provided by DriSteem to assemble.

3. Arrange appropriate lifting mechanism and personnel to mount the GTS humidifier LX series on the floor stand. See Warning below.

4. Use the lifting hole on the base of humidifier to carefully lift it off the ground. See Warning below.

OM-7972

Models LX-50 - LX-100

OM-7971

5. Slowly lower the humidifier on the floor stand.

6. Secure the base of the humidifier to the floor stand using sheet metal screws.

WARNING

HEAVY OBJECT

To avoid muscle strain or back injury, use lifting aids and proper lifting techniques when removing or replacing.

Notes:

• Weight of ﬂoor stand:

Models LX-50 - LX-100: 24 lbs (11 kg), Model LX-150: 30 lbs (14 kg)

• Allows for condensate piping/pump

• Bottom supply water connection is located underneath the side

water connection. See ﬁll valve connection position on page 13.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 19

INSTALLATION

Optional ﬂoor stand mount (Models 50, 75,100, and 150 only)

FIGURE 17-1: LX SERIES WITH FLOOR STAND MOUNT (MODELS 50, 75, AND 100)

See "Indoor unit dimensions" on page 13-1.

21.125" (537mm)

OM-7970

OM-7962

FIGURE 17-2: LX SERIES WITH FLOOR STAND MOUNT (MODEL 150)

See "Indoor unit dimensions" on page 13-1.

21.125" (537mm)

OM-8021

OM-8022

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 20

INSTALLATION

Optional wall mount (Models 50, 75 and 100 only)

FIGURE 18-1: LX SERIES WITH WALL MOUNT

42.75"

(1086 mm)

20.13"

(511 mm)

23.13" (587 mm)

22.88" (581 mm)

See "Indoor unit dimensions" on page 13-1.

24.63" (626 mm)

OM-7993

OM-7992

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 21

INSTALLATION

Outdoor enclosure

GENERAL DESCRIPTION

Overview

• The outdoor GTS is CSA/ETL approved for installation outdoors. It uses an optional heater and fans to properly operate in operating temperatures of

-40 ºF to 122 ºF (-40 ºC to 50 ºC). The unit is intended to be mounted on a concrete pad or rooftop curb. Properly sized curbs are available from DriSteem.

• The knockouts located on the front of the unit are used to run electrical power and gas to the unit. There is a pipe chase located inside the enclosure that is used for both the supply water and drain piping. Supply water and drain piping will need to come through the knockouts at the front of the unit if the chase cannot be used. Combustion air is drawn from within the enclosure, and ﬂue gas is vented out the back of the enclosure.

• An emergency drain is provided on the front of the unit. In case of a water leak, water drains onto the roof through this emergency drain. The drain is intended to have a ﬁeld installed water seal.

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

• In cold climates, Freeze Protection Piping (see page 25), is an important component to the proper operation of the outdoor humidiﬁer.

FIGURE 19-1: OUTDOOR ENCLOSURE TYPICAL INSTALLATION OVERVIEW

Steam outlet to rooftop AHU dispersion

Flue vent

Pipe chase

Gas piping

Flue condensate drain

Drain piping

Electrical

Fill

connections

OM-8004

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 22

INSTALLATION

Outdoor enclosure: Operation

If the ambient temperature in the enclosure is below 50 ºF (10 ºC), the heater is powered up. The heater remains powered up until the enclosure reaches 50 ºF (10 ºC). When there is no call for humidity, an aquastat maintains tank temperature at the factory default of 50 ºF (10 ºC). This temperature can be reset in the ﬁeld to be from 50-180 ºF (10-82 ºC). If for any reason the tank temperature falls below 40 ºF (4 ºC), the tank will drain to keep the unit from freezing.

When the temperature of the enclosure reaches 85 ºF (29 ºC), the ventilation fans turn on to cool the electronic components. If the enclosure temperature reaches 150 ºF (66 ºC), the Vapor-logic controller will extinguish any operating burners and allow the ventilation fans to cool the enclosure. When the enclosure temperature falls below 150 ºF (66 ºC), the GTS humidiﬁer automatically resumes normal operation.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 23

Outdoor enclosure: Dimensions

FIGURE 21-1: OUTDOOR ENCLOSURE TOP VIEW

INSTALLATION

Exit for standard steam outlet

GTS humidiﬁer LX series

Exit for optional steam outlet (through pipe chase)

Heater

Flue (by installer)

Access panel door

Air intake

F D

Ventilation fans

Control cabinet

Access panel door

Pipe chase

OM-8010

DIMENSIONS

• For outdoor unit weights, see Table 11-1.

• For clearances, see Figure 15-1.

Table 21-1: Outdoor unit dimensions

Description

A Enclosure length 36 914.4 45 1143 57.35 1456.59 57.35 1456.59

B Enclosure width 27.35 694.7 27.35 694.7 27.35 694.69 39.10 993.04

C Enclosure height 57 1447.8 57 1447.8 62 1574.8 62 1574.8

Pipe chase position

E 6.51 165.28 6.51 165.3 2.048 52.02 2.05 52.04

Pipe chase size

G 11 279.4 11 279.4 16 406.4 16 406.4

Steam pipe position

J 22.61 574.2 21.33 541.76 22.16 562.84 31.48 799.36

K Curb height 14.0 - 36.0 356 - 914 14.0 - 36.0 356 - 914 14.0 - 36.0 356 - 914 14.0 - 36.0 356 - 914

L Height to bottom of ﬂue outlet 47.0 1194 47.0 1194 45.0 1143 45.0 1143

LX-50, LX-75, LX-100 LX-150 LX-200, LX-250, LX-300 LX-400, LX-500, LX-600

inches mm inches mm inches mm inches mm

2.05 52.02 2.05 52.02 2.425 61.60 2.05 52.02

7 177.8 7 177.8 10 254 10 254

6.96 176.78 6.96 176.79 9.214 234.04 8.965 227.61

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 24

INSTALLATION

Outdoor enclosure: Location

• 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.

• The GTS must be level and located so there is enough clearance for opening the access panels (see recommended clearances on Page 15).

• Do not locate unit in areas where the surrounding air has high levels of particulates, such as some industrial parks or areas near highways. In situations such as these, you will need to ﬁlter the air inlets.

• The unit should be located so prevailing winds do not blow into the air intakes.

• When located on the roof, the air intakes must be a minimum of 14” (360mm) off the roof to prevent intake of snow or splashed rain.

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

FIGURE 22-1: OUTDOOR ENCLOSURE MOUNTED ON A CURBBFIGURE 22-2: OUTDOOR ENCLOSURE MOUNTED FLUSH

OM-8008 OM-8009

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 25

Outdoor enclosure: Mounting

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

• DriSteem rooftop curbs are shipped knocked down for ease of transporting to the roof. The curb is manufactured out of 14-gauge galvanized steel and is shipped with all hardware for bolt-together assembly, a curb gasket for sealing between the curb and the unit, and an installation drawing. All holes are matched before leaving the factory.

• Roof curbs supplied by others must be at least 14” high, and 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.

• Prior to installation, remove all of the unit packaging.

• The GTS outdoor enclosure must be lifted by the lift plates (See Figure 23-1) on the base of the unit. It must be lifted in a fashion that holds it level and keeps it from tipping, falling, or twisting.

INSTALLATION

• 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.

• All lifting operations must be accomplished with a load spreader of

sufﬁcient width to ensure that the lifting cables clear the side of the unit.

FIGURE 23-1: OUTDOOR ENCLOSURE MOUNTING WITH LIFT BRACKET

1-1½" dia 938 mm) hole lifting bracket in each corner (typical of 4)

OM-8011

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 26

INSTALLATION

Outdoor enclosure: Piping

FIGURE 24-1: GTS OUTDOOR ENCLOSURE WITH STANDARD OR OPTIONAL STEAM OUTLET, ELEVATION VIEW

Standard steam outlet Optional steam outlet

Steam outlet

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

Pipe chase

Emergency drain

OM-8006

Ventilation fans

GTS LX humidiﬁer

See Piping beginning on Page 28 for directions on installing water, drain, ﬂue gas condensate, and gas on the GTS humidiﬁer LX series. For Outdoor Enclosure speciﬁc items, see below.

Steam outlet

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

Pipe chase

Emergency drain

FLUE GAS CONDENSATE

Ventilation fans

GTS LX humidiﬁer

OM-8007

For cold climates, do not drain condensate on roof. This will cause the condensate to freeze and back up. Follow local code requirements.

SUPPLY WATER AND DRAIN

• Using the pipe chase

Use insulation to completely ﬁll the area around the pipes in the chase to maintain proper enclosure pressure and protect unit components from elevated moisture levels within the 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.

• Using the knockouts on the front of the unit

Heat trace and insulate piping if freezing temperatures is a concern.

• Insulate supply water piping inside the unit to avoid

dripping from condensation.

• For cold climates, see Freeze Protection Piping on Page

25.

STEAM

The humidiﬁer has two available steam distribution conﬁgurations. The standard conﬁguration has a steam outlet on the right side of the enclosure. The optional internal steam distribution conﬁguration routes steam within the enclosure and down through the pipe chase into a building.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 27

Outdoor enclosure: Freeze Protection Piping

FIGURE 25-1: OUTDOOR ENCLOSURE FREEZE PROTECTION PIPING

GTS humidiﬁer in Outdoor Enclosure installed on rooftop

INSTALLATION

Drain connection

Supply water piping (by installer)

Install open

drain or vacuum

breaker within 12" (305 mm)

vertical

Open drain or

vacuum breaker

(by installer)

Heated building interior

Typical drain line, min. 1½"

Normally open (fail open) minimum

8 gpm electric valve (by installer)

Domestic water, 20-80 psig (582 kPa) maximum

Optional Drane-kooler water tempering device

Open drain (See Note 4)

Disconnect (by installer); see Detail A

120 V supply (230 V in Europe)

Roof decking

Vacuum breaker (by installer) Water hammer arrestor (by installer)

120 V (230 V in Europe) from unit disconnect or other source (See Note 2)

Normally closed (fail closed) minimum

Domestic water, 20-80 psig (582 kPa) maximum

Open drain (See Note 4)

8 gpm electric valve (by installer)

Detail A

120 V (230 V in Europe)

Disconnect

box

To supply and drain valves (by installer) (See Note 2)

To GTS LX humidiﬁer

OM-8005

Piping notes:

1. Insulate supply water piping to avoid dripping from condensation.

2. To ensure that water does not remain in the fill line and freeze if there is a loss of power, use field installed additional valves upstream of the fill 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 fill line to prevent freezing (see above).

3. In extreme or critical applications in which the unlikely event of a water leak could cause severe damage, use a thermostat with a remote sensor on the fill line to cut power to the Model LX and safety valves to stop fill water to the Model LX and drain the fill piping when the temperature is below freezing.

4. Locate 1" air gap only in spaces with adequate temperature and air movement to absorb flash steam; otherwise, condensation may form on nearby surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.

5. If drain water tempering is required in the case of a power outage, install a Drane-kooler water tempering device. Pipe the cold water supplying the Drane-kooler ahead of the field-installed additional valves mentioned in Note 2.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 28

INSTALLATION

Outdoor enclosure: Venting

See General Venting beginning on Page 42 for directions on venting. For Outdoor Enclosure speciﬁc items, see below.

• Flue gas venting should include a 90 degree elbow and end with a tee to the back of the unit to minimize effects of wind and prevent condensate from dripping on to the unit. Governing codes prevail.

• Combustion air is drawn from within the DriSteem outdoor enclosure which is sufﬁciently vented.

Table 26-1: Outdoor unit amps and weights

Full Load Amps

Model

LX-50 7.0 4.5 3.0 2.5 479 217 362 164

LX-75 7.0 4.5 3.0 2.5 479 217 362 164

LX-100 7.0 4.5 3.0 2.5 475 216 367 166

LX-150 7.5 5.0 3.5 3.0 629 285 421 191

LX-200 9.0 5.5 5.0 3.5 914 415 564 256

LX-250 9.0 5.5 5.0 3.5 914 415 564 256

LX-300 9.0 5.5 5.0 3.5 916 415 574 260

LX-400 16.5 8.5 7.5 4.5 1606 729 940 426

LX-500 16.5 8.5 7.5 4.5 1606 729 940 426

LX-600 16.5 8.5 7.5 4.5 1612 731 962 436

** Add approximately 60-90 lbs (27-41 kg) for packaging material.

(Heater Package)

120V 60 Hz 230V 50Hz 120V 60Hz 230V 50Hz lbs kg lbs kg

Full Load Amps

(No Heater Package)

Operating weight Shipping (empty) weight*

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 29

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 humidiﬁers must be supplied with 120 Vac, 60 Hz (North American models) or 230 Vac, 50 Hz (European models) separately fused electrical service. The GTS humidiﬁer is equipped with transformers to step down the voltage to 24 Vac control voltage.

• When installed, the GTS humidiﬁer 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 humidiﬁer. Use only copper wire. Failure to follow these instructions could cause a ﬁre, resulting in severe bodily injury, death, or signiﬁcant 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 humidiﬁer is adjusted for correct performance at the factory. Only a qualiﬁed 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 speciﬁcations in Table 11-1 (North America) and Table 81-1 (Europe).

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

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 30

INSTALLATION

Piping

FIGURE 28-1: LX SERIES FIELD PIPING OVERVIEW - MODELS LX-50 THROUGH LX-150

Shock arrester recommended to reduce water hammer (by installer)

Steam hose or tubing

Steam outlet

Flue gas vent

Combustion air intake

7/8" (22mm) electrical ﬁeld connection

Install level

Offset humidiﬁer from ﬂoor drain to prevent

ﬂash steam from rising into the humidiﬁer

1" NPT (DN25) drain piping must be rated

for 212 °F (100 °C) (by installer)

1" (25 mm) air gap or

vacuum breaker

Open drain required. See ﬁrst note below.

Supply water line; water pressure range 25 to 80 PSI (172 to 582 kPa); water

Install level

OM-7952

Gas inlet connection

Flue gas condensate (see page 36)

Notes:

• Locate air gap only in spaces with adequate temperature and air movement to absorb ﬂash 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.

• Humidiﬁer ﬂue gases must be vented to the outside atmosphere.

• Supply water inlet is more than 2" (51 mm) above skim/overﬂow port, eliminating the possibility of backﬂow or siphoning from tank. No additional backﬂow prevention is required; however, governing codes prevail.

• For additional backﬂow prevention installation, install at a minimum of 40' (12 m) from the humidiﬁer.

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

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 31

INSTALLATION

Piping:

FIGURE 29-1: LX SERIES FIELD PIPING OVERVIEW - MODELS LX-200 THROUGH LX-600

Overview

Steam hose or tubing

Steam outlet

Install level

Combustion air intake

Flue gas vent

7/8" (22mm) electrical

ﬁeld connection

Shock arrester recommended to reduce water hammer (by installer)

Supply water line; water pressure range 25 to 80 PSI (172 to 582 kPa); water

Install level

Flue gas condensate (see page 36)

1" (25 mm) air gap or vacuum breaker

Open drain required. See ﬁrst note below.

Notes:

• Dashed lines indicate provided by installer.

• Humidiﬁer ﬂue gases must be vented to the outside atmosphere.

• For additional backﬂow prevention installation, install at a minimum of 40' (12 m) from the humidiﬁer.

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

Gas inlet connection

Offset humidiﬁer from ﬂoor drain to prevent

ﬂash steam from rising into the humidiﬁer

1½" NPT (DN40) drain piping must be

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

OM-7997

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 32

INSTALLATION

Connection sizesPiping:

Table 30-1: Connection sizes

Description

Gas supply 1/2 (pipe thread) 15 1/2 (pipe thread) 15 3/4 (pipe thread) 20 1 ¼ (pipe thread) 32

LX-50, LX-75, LX-100 LX-150 LX-200, LX-250, LX-300 LX-400, LX-600

inches DN inches DN inches DN inches DN

Sealed combustion piping

Flue vent 3 80 3 80 4 100 6 150

Supply water

Drain 1 (drain block) 25 1 (drain block) 25 1 (drain block) 25 1 (drain block) 25

Steam outlet*

Flue gas condensate

Condensate return (recommended)

Notes:

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

STEAM PIPING SUPPORT

3/8 (pipe thread - side)

1/2 (pipe thread - bottom)1015

(all steam: hose/pipe

3 80 3 80 4 100 6 150

3/8 (pipe thread - side)

1/2 (pipe thread - bottom)1015

(all steam: hose/pipe

thread)

5/8 (OD) 18 5/8 (OD) 18 5/8 (OD) 18 5/8 (OD) 18

3/4 (pipe thread) 20 3/4 (pipe thread) 20 3/4 (pipe thread) 20 3/4 (pipe thread) 20

thread)

3/8 (pipe thread - side)

1/2 (pipe thread - bottom)1015

503 (all steam: ﬂange/pipe

thread)

3/8 (pipe thread - side)

1/2 (pipe thread - bottom)1015

804 (all steam: ﬂange/pipe

thread)

100

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

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 33

INSTALLATION

Piping:

FIGURE 31-1: LX SERIES CONDENSATE RETURN FIELD PIPING - MODELS LX-50 THROUGH LX-150

Air vent tube

6" (150 mm) minimum

Condensate return

Optional condensate return piping from dispersion unit, ¾" pipe thread (DN20) ﬁtting at humidiﬁer

vent height

Condensate return

Use union for cleanout plate removal

Access by others

OM-8001

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 34

INSTALLATION

Piping:

FIGURE 32-1: LX SERIES CONDENSATE RETURN FIELD PIPING - MODELS LX-200 THROUGH LX-600

Condensate return

Air vent tube

6" (150 mm) minimum

vent height

Optional condensate return piping from dispersion unit, ¾" pipe thread (DN20) ﬁtting at humidiﬁer

Access by others

Condensate return

Manual drain valve (if required)

OM-8000

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 35

Supply water and drain overflow connectionsPiping:

AUTOMATIC DRAIN WATER TEMPERING

The GTS humidiﬁer LX series is shipped with drain water tempering enabled. This feature can be disabled in the Vapor-logic controller. When drain water tempering is enabled, the following steps will take place to ensure drain water is less than 140°F (60 °C):

1. Water greater than 140°F (60 °C) is detected in the drain assembly with a

temperature sensor.

2. Fill valves open, directing cool water to the drain port within the tank.

3. Hot and cold water mix in the tank near the drain port.

4. Drain port valve opens and sends tempered water to the drain manifold.

5. The Vapor-logic controller controls the drain and fill valves using input

from the drain temperature sensor to enable closed-loop control of drain water temperature, thus ensuring it does not exceed 140°F (60°C) while minimizing water usage.

INSTALLATION

SUPPLY WATER CONNECTIONS

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

• There is one water connection to the humidiﬁer. Water is connected in the

ﬁeld to the ﬁll water manifold. The ﬁll water manifold provides water to the humidiﬁer tank and to the secondary heat exchanger. The water provided to the tank is also used for tempering drain water.

• Make union connections at the humidiﬁer on the make-up water supply and

drain/overﬂow lines.

• Provide a shutoff valve in the supply water line to isolate the humidiﬁer from

the water system while servicing.

• A shock arrester, provided by installer, is required to reduce water hammer.

• A 2" (51 mm) air gap is provided in the humidiﬁer tank to accommodate

skim and/or overﬂow protection and prevent water backﬂow.

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

• Use insulating unions or bushings to make connections between copper and

other dissimilar metal ﬁttings, such as galvanized steel. These insulating ﬁttings 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 humidiﬁer at a new installation,

make sure the humidiﬁer tank is full of water and the water is free to ﬂow into the tank.

• Do not use heated supply water. Using supply water over 90°F (32 °C) will

adversely effect the performance of the GTS humidiﬁer LX series.

• Water inlet and outlet must be permanent pipe connections shown in Table

30-1. Do not connect with hose-sets or other non-permanent methods.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 36

INSTALLATION

Supply water and drainPiping:

SUPPLY WATER PIPING

• The GTS humidiﬁer has a 2" (51 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 backﬂow preventer.

• The supply water pressure range must be 25 psi to 80 psi (172 kPa to 552 kPa).

• The supply water assembly has both a 3/8" (DN10) pipe thread (side) and 1/2" (DN 15) pipe thread (bottom) connection.

• During an integral drain tempering event, cold water in the internal drop tube may cause a low rolling sound.

• In cases where water hammer occurs when the ﬁll solenoid closes, a shock arrester is recommended. Reducing the supply water pressure (minimum 25 psi [172 kPa]) or using ﬂexible 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 end-of-season feature 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.)

• Supply water tubing must be rated for at least 80 psi (552 kPa) at 140°F (60 °C) continuous service.

DRAIN

The drain line piped from the humidiﬁer must be run to an approved sanitary waste or suitable drain that accommodates a 12 gpm ﬂow rate. Although the GTS humidiﬁer is equipped with integral water tempering, if nonmetallic drain pipe or hose is used, it should be rated for 212 °F (100 °C) minimum continuous operating temperature.

If vertical drop of drain exceeds 12” (305 mm) a vacuum breaker or open drain with air gap must be installed within 12 vertical inches (305 mm) of unit. Failure to do so will create a siphon during drain events, disrupting normal drain operation and allowing steam to enter the drain through the overﬂow p-trap outlet (see Figure 35-2).

Important: Damage caused by chloride

corrosion is not covered by your DriSteem warranty. See “Supply water guidelines” on Page 8.

Table 34-1: Supply water guidelines

Supply water pressure

Supply water ﬂow rate

Supply water temperature

25-80 psi at 6.0 gpm ﬂow rate

6.0 gpm 21 l/min

34°F to 90°F 1°C to 32°C

172-552 kPa

Table 34-2: Water tempering specifications

for optional Drain-kooler water tempering device

Maximum

Water type

Hot water inﬂow

Cold water inﬂow*

Tempered water outﬂow

* Cold water inﬂow pressure must be between

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

Flow rate

U.S. gpm

L/m °F °C

6 22.7 212 100

6 22.7 90 32

12 45.4 140 60

Maximum

temperature

Ensure the drain piping conﬁguration (diameter, length, slopes, elbows, hangers, etc.) supports a 12 gpm ﬂow rate for proper drain operation and to prevent overﬂow and spillage from an open drain with air gap.

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.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 37

INSTALLATION

Supply water and drainPiping:

Do not locate the humidiﬁer directly above a ﬂoor drain — skim and drain water dumped into the drain will cause ﬂash steam. This steam will rise and saturate electrical components, adversely affecting component life and performance.

An open drain or vacuum breaker 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 ﬂash 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 humidiﬁer 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). A check valve is required on the discharge of the pump (see Figure 35-1). Electrical power for the pump is independent of the humidiﬁer.

The GTS humidiﬁer has an auxiliary 3/4" (20 DN) drain outlet located on or near the cleanout plate. 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. If this connection is used, install a union to facilitate removal of the cleanout plate.

Drain water tempering

Governing codes may require that the 212 °F (100 °C) drain and skim/overﬂow water from the humidiﬁer be tempered before it is discharged into the building drain piping. The GTS humidiﬁer has closed loop integral drain tempering.

Integral tempering sequence:

1. Water greater than 140 °F (60 °C) is detected in the drain manifold with a temperature sensor.

2. Tank ﬁll valve opens and directs cold water through the tank and toward the drain.

3. Drain valve opens and sends tempered water to the drain manifold.

4. Feedback from the drain manifold temperature sensor will open/close the drain valve/ﬁll valves to maintain a maximum of 140 °F (60 °C) in the drain manifold.

FIGURE 35-1: LIFTING DRAIN WATER FIGURE 35-2: VERTICAL DRAIN

Inlet drain water piping, by installer

Water pump

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

Discharge piping, by installer

Check valve

DC-1117

Install open drain or

vacuum breaker within

12" (305 mm)

Greater than 12" (305 mm)

OM-8023

Open drain or vacuum breaker (by installer)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 38

INSTALLATION

Flue gas condensatePiping:

FLUE CONDENSATE PIPING GUIDELINES

• Follow local code requirements for discharge of condensate. The ﬂue gas condensate will have a 2-4 pH range and may need to be treated prior to discharge.

• Minimum drain pipe size is 5/8" inside diameter.

• If treatment is needed, DriSteem offers a condensate neutralizer kit. The neutralizer should be installed per manufacturer instructions below condensate p-trap level. Avoid obstructions as condensate could be damaging to surrounding surfaces and articles.

• Prime the condensate p-trap at the base of the secondary heat exchanger.

FIGURE 36-1: GTS SEALED COMBUSTION CONNECTION

- MODELS LX-50 THROUGH LX-150

Combustion air intakeFlue gas vent to outside

24" (607 mm)

6" - 8" (152 - 203 mm)

Flue gas condensate

½" (13 mm)

Notes:

1. Use ﬂexible tubing that is rated for acidic condensate.

2. All tubing must allow ﬂow away for humidiﬁer to condensate neutralizer (if equipped).

3. Condensate neutralizer should be installed per manufacturer instructions below the condensate p-trap level.

4. If ﬂoor drain is greater than 5' (1.5 m) from humidiﬁer, use a 5/8" PVC pipe instead of a hose.

5/8" secondary heat exchanger condensate

Optional condensate neutralizer

5/8" (16 mm)

Open drain

OM-7967

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 39

Flue gas condensatePiping:

FIGURE 37-1: GTS SEALED COMBUSTION CONNECTION - MODELS LX-200 THROUGH LX-600

Combustion air intake

Flue gas vent to outside

INSTALLATION

Optional condensate neutralizer

5/8" (16 mm) secondary heat exchanger condensate

Notes:

1. Use ﬂexible tubing that is rated for acidic condensate.

2. All tubing must allow ﬂow away for humidiﬁer to condensate neutralizer (if equipped).

3. Condensate neutralizer should be installed per manufacturer instructions below the condensate p-trap level.

4. If ﬂoor drain is greater than 5' (1.5 m) from humidiﬁer, use a ½" PVC pipe instead of a hose.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

5/8" (16 mm)

Open drain

OM-7995

Page 40

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 tightening 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 liqueﬁed 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 ﬁre or explosion, resulting in bodily injury, death, or signiﬁcant property damage.

WARNING

Fire hazard

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

To convert the humidiﬁer 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 ﬁeld piping and humidiﬁer gas train for gas leaks.

• Do not use soap solution or open ﬂame on humidiﬁer 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).

• 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 humidiﬁer controls must never exceed 24" wc (6 kPa, 60 mbar), or the gas valve will become damaged and require replacement.

The gas pressure diagnostic port on the gas valve can be used to check pressure. Loosen the screw and push a 5/16" ID hose over the ﬁtting connected to a gauge. Remove the hose and tighten the screw when ﬁnished.

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 HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 41

INSTALLATION

Gas (continued)Piping:

• 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 ﬂow 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 ﬂow, and length of main must be considered. Avoid pipe sizes smaller than 1/2" (DN15). Table 39-2 allows for the usual number of ﬁttings with a 0.3" wc (0.07 kPa) pressure drop.

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

1.53 for propane, use Table 39-1.

Table 39-2: Gas pipe capacities for gas pressures of 0.5 psig (3.45 kPa) or less

/hr and m3/hr at pressure drop of 0.3" wc (0.07 kPa)

Speciﬁc gravity = 0.60

Nominal iron pipe diameter in inches (DN)

Length of

pipe

ft m ft

Gas ﬂow in piping in ft

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

Table 39-1: Specific gravity conversion factors

Natural gas

Speciﬁc gravity Factor

0.55 1.04

0.60 1.00

0.65 0.962

Propane gas

Speciﬁc gravity Factor

1.50 0.633

1.53 0.626

1.60 0.612

Note: Use the above multiplying factor with Table: 39-2 when the speciﬁc 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 40

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 42

INSTALLATION

Gas (continued)Piping:

EXAMPLE

For this example, refer to the tables on Page 39.

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

• Btuh (kW) input / caloriﬁc value of gas

Caloriﬁc 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 LX-150 operating on natural gas, calculate the ft3/ hr or m3/hr as follows:

• 183,000 Btuh / 1025 Btu/ft3 = 390 ft3 per hour

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

Using the same example, if the speciﬁc gravity of your natural gas was 0.55 (instead of the 0.60 standard), see Table 39-2 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 39-2, 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 speciﬁc gravity of the gas.

Gas leak testing

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

• With the burner running at full capacity, 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.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 43

Gas (continued)Piping:

FIGURE 41-1: GTS GAS PIPING

All Models

INSTALLATION

See page 30 for connection sizes

OM-7953

Drip pocket

Manual gas shutoff valve

Plugged test gauge connection

3” (76 mm) min.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 44

INSTALLATION

General venting

The GTS humidiﬁer is pre-plumbed to support both room air and sealed combustion. See Warning. Requirements and recommendations for each follow.

ROOM AIR COMBUSTION

• All fuel burning equipment must be supplied with air for combustion of the fuel. Sufﬁcient 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 humidiﬁer 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 humidiﬁer area.

WARNING

Air for combustion

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

When the GTS is located in an environment with negative pressure or toxic air, pipe the sealed combustion connection to fresh supply air at atmospheric pressure.

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

• Do not locate in a dusty environment.

• Do not block the ﬂow 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 humidiﬁer 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 42-1 outlines four types of locations, and the requirements of each.

Table 42-1: Location of humidifier and required air openings (non-ducted combustion air)

Location description Required air opening

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

Conﬁned space with all air from outside the building through air ducts

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

Unconﬁned 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 cm opening per 4000 Btu/hr (1172 W) input*

Same as conﬁned space; all air from outside the building

) per

WARNING

Do not interfere, disable, or tamper with the devices monitoring the combustion gas discharge, including the ﬂue temperature and ﬂue pressure sensors. Only authorized and trained technicians should perform any service on these items. If the unit fails repeatedly due to a discharge (ﬂue) fault, have the device serviced and

)

tested by authorized and trained technicians.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 45

INSTALLATION

General venting (continued)

WARNING

Combustion air quality (list of contaminants)

Sample list of contaminants to be avoided:

The recommended source of combustion air is to use the outdoor air supply. However, the use of indoor air in most applications is acceptable except as follows:

1. If the furnace is installed in a conﬁned space it is recommended that the necessary combustion air come from the outdoors by way of attic, crawl space, air duct, or direct opening.

2. If outdoor combustion air is used, there must be no exposure to the installations or substances listed in “3” below.

3. The following types of installation may require OUTDOOR AIR for combustion, due to chemical exposures:

• Commercial buildings

• Buildings with indoor pools

• Furnaces installed in laundry rooms

• Furnaces installed in hobby or craft rooms

• Furnaces installed near chemical storage areas

Exposure to the following substances in the combustion air supply may also require OUTDOOR AIR for combustion:

• Permanent wave solutions

• Chlorinated waxes and cleaners

• Chlorine based swimming pool chemicals

• Water softening chemicals

• De-icing salts or chemicals

• Carbon tetrachloride

• Halogen type refrigerants

• Cleaning solvents (such as perchloroethylene)

• Printing inks, paint removers, varnishes, etc.

• Hydrochloric acid

• Cements and glues

• Antistatic fabric softeners for clothes dryers

• Masonry acid washing materials

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 46

INSTALLATION

General venting (continued)

FIGURE 44-1: ROOM AIR COMBUSTION FOR THE LX-50, LX-75, AND 100

Flue gas vent to outside

Quantity of two 2" (60 mm) 90° elbows

24" (607 mm)

6" - 8" (152 - 203 mm)

Flue gas condensate

To drain or condensate neutralizer

Note: Field piping supplied by others.

Bird screen

3" to 2" (80 to 60 mm) reducer (user installed)

3" (80 mm) air intake)

See Table 48-1 for ﬂue venting sizes and lengths.

OM-7978

CAUTION

Flue condensate removal

(For Models LX-50 - LX-300 only).

Install a drip tee within the ﬁrst 3' (1 m) of ﬂue venting for ﬂue condensate removal. Failure to follow these instructions could reduce the service and efﬁciency of the secondary heat exchanger.

If ﬂue vent is less than 10' (3 m) long and a sidewall exit, then no drip tee needed.

FIGURE 44-2: ROOM AIR COMBUSTION FOR THE MODELS LX-150, 200, AND 300

Flue gas vent to outside

Quantity of two elbows

24" (607 mm)

Bird screen

6" - 8" (152 - 203 mm)

Flue gas condensate

See Table 48-1 for

To drain or condensate neutralizer

Note: Field piping supplied by others.

OM-7979

ﬂue venting sizes and lengths.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 47

General venting (continued)

FIGURE 45-1: ROOM AIR COMBUSTION FOR THE LX-400, LX-500, AND LX-600

INSTALLATION

No drip tee required

Flue gas vent to outside

Quantity of two 90° elbows (See Table 48 for vent size)

Bird screen

See Table 48-1 for ﬂue venting sizes and lengths.

OM-8020

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 48

INSTALLATION

General venting (continued)

SEALED COMBUSTION (COMBUSTION AIR FROM OUTSIDE THE BUILDING)

• The GTS is pre-plumbed to support sealed combustion using PVC, CPVC ABS, polypropylene, or stainless steel or piping (see Figure 46-1). All GTS models have a single point connection on top of the humidiﬁer shroud.

• When running piping for sealed combustion, see Tables 48-1 and 49-1 for maximum and minimum equivalent length of vent pipe and equivalent length of each elbow (maximum of eight elbows including terminations). The outside air source can be either a ﬁnal 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 airﬂow.

• If sealed combustion piping passes through warm, conditioned space insulate piping to prevent condensation.

WARNING

Requirement for manifolding sealed combustion piping runs

When installing sealed combustion piping for more than one GTS humidiﬁer, do not commonly manifold multiple sealed combustion piping runs without having the manifold sized for the speciﬁc installation by a licensed engineer. Failure to follow these instructions could starve the GTS humidiﬁer 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 46-1: LX SERIES SEALED COMBUSTION CONNECTION

Flue gas vent to outside

Flue

Tee

24" (607 mm)

6" - 8" (152 - 203 mm)

Flue gas condensate

To drain

Combustion air intake

PVC or CPVC combustion air intake

OM-7977

Note: Field piping supplied by others.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 49

General venting (continued)

GUIDELINES

• The GTS is a Fan Assisted Category IV (condensing, positive pressure)

Appliance.

• Maximum ﬂue temperature is 140 °F (60 °C).

• Vent piping must be UL or UL/CSA listed PVC, CPVC, polypropylene or any

other vent type approved for a Category IV appliance.

• Follow supplier ﬁtting and cement/primer instructions to ensure proper ﬁt,

adhesion, and assembly.

• Clean and seal inlet piping per the pipe manufacturer's recommended

solvents and cements. Follow manufacturer's recommended procedures for pipe and ﬁtting preparation, cutting and attachment with appropriate solvents and cements for the material.

• Insulate sealed combustion piping to avoid dripping from condensation.

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

• Do not insulate the ﬂue vent piping.

• 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.

INSTALLATION

WARNING

Installation requirements

The humidiﬁer must be installed by a qualiﬁed 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.

WARNING

Installation requirements

Failure to properly seal all joints and seams as required in the air inlet piping may result in ﬂue gas recirculation, spillage of ﬂue products and carbon monoxide emissions causing sever personal injury or death.

Table 47-1: Approved PVC/CPVC flue gas vent pipe and fittings

Item Vent material United States Canada

PVC ANSI/STM D2665

PVC, Sch. 40 ANSI/ASTM D1785

Piping

Fittings

Cement,

primer

Note: Do not use cellular (foam) core PVC, DWV pipe, ASTM F891, or cellular core CPVC or RADEL (Polyphenylsulfone).

PVC, SDR series ANSI/ASTM D2241

CPVC, Sch. 40 ANSI/ASTM F441

CPVC, SDR series ANSI/ASTM F422

PVC, DWV, Sch. 40 ANSI/ASTM D2665

PVC, Sch. 40 ANSI/ASTM 2466

PVC, Sch. 80 ANSI/ASTM 2467

CPVC, Sch. 40 ANSI/ASTM F438

CPVC, Sch. 80 ANSI/ASTM F439

PVC ANSI/ASTM D2564

CPVC ANSI/ASTM F493

IPEX system 1738

ULC S636

Table 47-2: Approved vent manufacturers

Item Manufacturer

Polypropylene

Stainless steel

* For 2", 3", and 4" vent pipe only.

Centrotherm Eco Systems*

DuraVent (M&G Group)

Z-Flex

Heat Fab

Metal Fab

Security Chimney

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 50

INSTALLATION

General venting (continued)

• When applying the codes, reference also the venting manufacturer's instructions, the service gas

supplier's regulations, and the speciﬁc instructions provided in this manual.

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

• For Models LX-50 - LX-300 only: Install a drip tee within the ﬁrst 3' (1 m) of ﬂue venting for ﬂue

condensate removal. If ﬂue vent is less than 10' (3 m) long and a sidewall exit, then no drip tee needed. See Figure 46-1.

• The purpose of venting the gas humidiﬁer is to completely remove all products of combustion

and ventilation gases to the outside air.

• Maintain a minimum upward slope of 1/4" per linear foot (2%) and supported every 4' (1 m)

on all horizontal runs of the ﬂue gas. Maintain proper support of vent connections and joints. Observe clearances (in accordance with applicable codes) from all combustible materials.

• Inspect for proper and tight construction. Clean and remove any restrictions or obstructions. An

existing chimney may be used as a chase.

• Do not connect this humidiﬁer to a chimney ﬂue servicing any other appliance.

• Dedicated ﬂue gas venting and combustion air piping must be used for each individual LX series

GTS humidiﬁers.

• The ﬂue gas outlet and combustion air inlet pressures at the vent adapters on the LX series GTS

Table 48-1: Flue vent lengths

Minimum equivalent pipe length

Model

LX-50 10 (3) 70 (21) 10 (3) 70 (21)

LX-75 5 (1.5) 30 (9) 10 (3) 30 (9) 50 (15)

LX-100 5 (1.5) 10 (3) 10 (3) 20 (6) 25 (8)

LX-150 10 (3) 10 (3)

LX-200 40 (12)

LX-250 30 (9)

LX-300 25 (8)

LX-400 50 (15)

LX-500 35 (10)

LX-600

Combustion air intake Flue gas vent Combustion air intake Flue gas vent

(60

mm)

(80

mm)

(mm)

ft (m)

(60

mm)

(80

mm)

(mm)

(60

mm)

100 (30)

Maximum equivalent pipe length

(80

mm)

250 (76)

200 (61)

150 (46)

100 (30)

(mm)

175

(53)

125

(38)

100

(30)

ft (m)

(mm)

200 (61)

150 (46)

100 (30)

(60

mm)

100

(30)

50 (15)

25 (8)

(80

mm)

250 (76)

200 (61)

150 (46)

100 (30)

40 (12)

30 (9)

25 (8)

(mm)

175 (53)

125 (38)

100 (30)

50 (15)

35 (10)

(mm)

200 (61)

150 (46)

100 (30)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 51

General venting (continued)

INSTALLATION

humidiﬁer must be within the ranges shown in Table 49-2 from full output to minimum output.

• Do not common vent products of combustion the LX

series GTS humidiﬁer with another LX series or any other appliance.

• Flue gas outlet and combustion air inlet adapters

accept PVC, CPVC, Polypropylene and stainless steel piping.

• Flue vent adapters, if used, must be installed vertically

at the point of connection to the GTS humidiﬁer LX series.

• 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.

Table 49-2: Venting pressure

Description Minimum Maximum

Flue gas outlet pressure

Combustion air inlet pressure

FIGURE 49-1: VENT ELBOWS AND TEES

-0.05" WC (+12 Pa)

-0.45" WC (-112 Pa)

long

mitered

+0.45" WC

(+112 Pa)

+0.05" WC

(+12 Pa)

medium

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

• Building materials must be protected from degradation by ﬂue gases.

Note: A maximum of eight elbows, including terminations, are allowed.

concentric

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

Table 49-1: Equivalent vent lengths

Description

Long radius 90° elbow 3 0.9 4 1.2 6 1.8

Medium radius 90° elbow 5 1.5 7 2.0 10 3.0

Mitered 90° elbow 8 2.4 11 3.3 16 4.9

Long radius 45° elbow 1.5 0.5 2 0.6 3 0.9

Medium radius 45° elbow 2.5 0.8 3 1.0 5 1.5

Mitered 45° elbow 4 1.2 5 1.6 8 2.4

Concentric vent termination 5 1.5 7 2.0

Tee 16 4.9 21 6.5 32 9.8

3" to 2" (80 to 60 mm) step down adapter 5 1.5 7 2.0 10 3.0

2" - 3" diameter 4" diameter 6" diameter

feet meter feet meter feet meter

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 52

INSTALLATION

Vertical venting

• Never connect this humidiﬁer to an existing chimney.

• Rigidly support the vent pipe every 3' (1 m) or less with hangers or straps to ensure there is no movement after installation. The humidiﬁers secondary heat exchanger 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. Install a high-wind vent cap on all GTS humidiﬁers.

• Install and ﬁre-stop all vent pipe passing through ﬂoors, 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 humidiﬁer 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.

FIGURE 50-1: CONCENTRIC VENT ROOF INSTALLATION

12" (305 mm) [18" (457 mm) for Canada] minimum

Vent

Combustion air

Roof boot/ﬂashing (ﬁeld supplied)

Flue gas

clearance above highest anticipated snow level. Maximum of 24" (610 mm) above roof

Support (ﬁeld supplied)

Elbow (ﬁeld supplied)

Combustion air

OM-7976

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 53

Vertical venting (continued)

• 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 sufﬁcient height above ground level to prevent blocking by expected snowfall.

• Building materials must be protected from degradation by ﬂue gases.

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

• See Tables 48-1 and 49-1 for maximum and minimum equivalent length of vent pipe.

FIGURE 51-1: GTS VERTICAL VENTING

2 qty 90° elbows or tee (optional)

Bird screen

INSTALLATION

Flue gas vent (straight)

12" (305 mm) minimum vertically

12" (305 mm) minimum above roof/snow level 24" (610 mm) maximum without additional support

Notes:

• For Models LX-50 - LX-300 only: Install a drip tee within the ﬁrst 3' (1 m) of ﬂue venting for ﬂue condensate removal.

If ﬂue vent is less than 10' (3 m) long and a sidewall exit, then no drip tee needed. See Figure 46-1.

• Required distance between air intake and vent hood is deﬁned by governing codes.

• Slope ﬂue gas vent horizontal runs ¼"/ft (2°) back towards the tee at humidiﬁer.

• 4' (1.2 m) minimum from any cable, dormer, or other roof structure with building interior access (e.g. vent or window).

• 10' (3 m) minimum from any forced air inlet to the building, including make up air inlets such as dryer or furnace areas.

24" (610 mm) minimum center to center

To drain

GTS humidiﬁer LX series

Bird screen

Combustion air intake (2 qty 90° elbows)

Bird screen

12" (305 mm) minimum above roof/ snow level 24" (610 mm) maximum without additional support

Bird screen

Flue gas vent (straight)

Combustion air intake

OM-7973

2 qty 90° elbows or tee (optional)

Bird screen

2 qty 90° elbows

Bird screen

12" (305 mm) minimum vertically

OM-7975-LX

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 54

INSTALLATION

Sidewall venting

DETERMINE A LOCATION

Consider the surroundings when terminating the vent and air:

• Position the vent where vapors will not damage nearby shrubs, plants, or air conditioning equipment or be objectionable.

• The ﬂue will form a noticeable plume as it condenses in cold air. Avoid areas where the plume could obstruct window views.

• Prevailing winds could cause freezing of condensate and water/ice buildup where ﬂue products impinge on building surfaces or plants.

WARNING

A gas vent extending through an exterior wall shall not terminate adjacent to wall or below building extensions such as eaves, parapets, balconies, or decks. Failure to comply could result in severe personal injury, death, or substantial property damage.

• Avoid possibility of accidental contact of ﬂue gas with people or pets.

• Do not locate the vent where wind could affect performance or cause recirculation, such as inside building corners, near adjacent buildings or surfaces, window wells, stair wells, alcoves, courtyards, or other recessed areas.

• Do not locate the vent above any door or window. Condensate can freeze, causing ice formations.

• Locate or guard vent to prevent condensate damage to exterior ﬁnishes.

• Combustion air and ﬂue gas terminations should be seated in the same atmospheric zones.

• In cold climate application, insulate sealed combustion air piping that passes through warm, humid interior environments to prevent condensation.

FIGURE 52-1: GTS HUMIDIFIER LX SERIES SIDEWALL VENTING

Flue gas vent

Pitch

¼"/ft. minimum

Combustion air pipe

Pitch

¼"/ft. minimum

Sidewall vent and air inlet terminations must terminate in the same pressure zone.

Failure to prime all ﬂue gas condensate traps (tees and secondary heat exchanger P-trap) with water will result in combustion gas entering the living space (which may contain carbon monoxide).

To avoid the risk asphyxiation from carbon monoxide, never operate the humidiﬁer unless the condensate drip tees and secondary heat exchanger P-trap are sealed with water.

CAUTION

Sidewall venting commercial products will result in large exhaust plumes in cold climates. Consideration should be taken when locating in proximity to windows, doors, walkways, etc.

OM-7983

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 55

Sidewall venting (continued)

FIGURE 53-1: GTS HUMIDIFIER LX SERIES SIDEWALL VENTING

For Models LX-50 - LX-300 only: Install a drip

tee within the ﬁrst 3' (1 m) of ﬂue venting for

ﬂue condensate removal. If ﬂue vent is less

than 10' (3 m) long and a sidewall exit, then

no drip tee needed.

INSTALLATION

Bird screen

Flue gas vent

Bird screen

OM-7980

Bird screen

Combustion air pipe

WARNING

Do not exceed the maximum lengths of the outside vent piping as shown in Figure 54-1. Excessive length exposed to the outside could cause freezing of condensate in the vent pipe, resulting in potential humidiﬁer shutdown.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 56

INSTALLATION

Sidewall venting (continued)

SIDEWALL INSTALLATION

See Figures 54-1 and Figures 54-2.

• For Models LX-50 - LX-300 only: Install a drip tee within the ﬁrst 3' (1 m) of ﬂue venting for ﬂue condensate removal. If ﬂue vent is less than 10' (3 m) long and a sidewall exit, then no drip tee needed. Warning: Failure to follow these instructions could reduce the service and efﬁciency of the secondary heat exchanger.

• If total actual length of ﬂue gas venting is less than 10' AND sidewall exit is used, a tee is not needed.

• The combustion air piping must end in a down-turned elbow. This arrangement avoids recirculation of ﬂue products into the combustion air stream.

• The ﬂue gas vent piping may terminate in an elbow pointed outward or away from the air inlet at least 12" (305 mm) above the combustion air inlet, or use a tee as a termination to minimize effects of wind.

• The vent must end:

• At least 6' (1.8 m) from adjacent walls.

• No closer than 12" (305 mm) below roof overhang.

• At least 3' (0.9 m) above any forced air intake within 10' (3 m).

• No closer than 12" (305 mm) below or horizontally from any door or

window or any other gravity air inlet.

• Air inlet must be at least 12" (305 mm) above grade or snow line; at least

12" (305 mm) below the vent end; and the vent pipe must not extend more than 24" (610 mm) vertically outside the building unless supports are added.

FIGURE 54-2: GTS HUMIDIFIER LX SERIES SIDEWALL VENTING WITH CONCENTRIC VENT

Overhang or roof

Bird screen

12" (305 mm)

OM-7982

Grade/snow line

FIGURE 54-1: GTS HUMIDIFIER LX SERIES SIDEWALL VENTING

Maximum outside vent piping length 24" (610 mm)

Flue gas vent

Combustion

air intake

Bird screen

12" (305 mm)

OM-7981

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Bird screen

12" (305 mm)

Grade/snow line

Bird screen

Use a tee in high wind areas

Bird screen

Page 57

Selecting a dispersion location

SELECTING THE DISPERSION ASSEMBLY LOCATION

• 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.

• 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 humidiﬁcation system design and is dependent on several application parameters. To determine your dispersion assembly’s non-wetting distance, consult your system’s design engineer or project documentation. Non-wetting distance can also be calculated using DriSteem’s DriCalc sizing and selection software, available at www.dristeem.com. Note that your current design conditions may vary from conditions used for system design.

• In general, the dispersion assembly is best placed where the air can 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.

INSTALLATION

• Place the dispersion assembly so that absorption occurs before the intake of a high efﬁciency ﬁlter. The ﬁlter can remove the visible moisture and become waterlogged.

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

• Place the dispersion assembly so absorption occurs before ﬁre 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 ﬂash steam; otherwise, condensing on nearby surfaces may occur.

• Refer to the Interconnecting Piping Instructions for further information

(Part #: 890000-631).

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 58

OPERATION

Start-up

START-UP CHECKLIST

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

 Verify that the GTS humidiﬁer, 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 humidiﬁer)

- 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 humidiﬁer matches the unit nameplate label.

• Verify that all ﬁeld and humidiﬁer 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 qualiﬁed 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:

• Display setup and menu information

• Control input signals and functions

• Drain, ﬂush, and skim features

• Safety features

• Alert screens and fault messages

The manual was shipped with your humidiﬁer. 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 speciﬁed and

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

 Verify that the humidiﬁer tank is securely installed and level before ﬁlling

with water (see the operating weights in Table 11-1.

 Verify that the humidiﬁer tank is level front to back and side to side after it is

full of water.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 59

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. Prime the condensate p-trap at the base of the secondary heat exchanger.

3. Follow the “Start-up commissioning checklist” on Pages 58 and 59 of this manual.

• Note: During start-up, do not leave the humidiﬁer unattended.

4. Monitor oxygen levels and adjust if out of range. Desired oxygen range is

5.5% ±1.0% at 100%. To adjust oxygen levels turn the gas valve throttle screw clockwise to increase oxygen and turn counterclockwise to decrease oxygen levels.

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

FIGURE 57-1: DETAIL OF GAS VALVE

Top view

Throttle screw

Gas valve power plug

Gas pressure diagnostic port

Vacuum reference signal

Gas valve

Systems and safeguards

The GTS humidiﬁer 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 ﬂue becomes blocked or the blower fails to run, the blocked ﬂue sensor will shut down the humidiﬁer.

• During operation, the water level in the tank is monitored by a probe system that ties into the Vapor-logic controller. If the water level drops below a safe point, the controller turns the burners off and tries to reﬁll the tank. If humidiﬁer is unable to ﬁll within a deﬁned time period, an “Excessive reﬁll time” alert appears in the Vapor-logic Alert Log. The burners will remain off until this alert is cleared. (For more about alerts, see the Vapor-logic Installation and Operation Manual.)

• Low water conditions are redundantly

identified by a temperature sensor/ switch located inside the tank. This sensor/switch is utilized by the Vaporlogic controller and is additionally tied directly into the power source for the gas valves. If this system detects an elevated temperature condition, the humidifier shuts down until the alert is cleared from the Vapor-logic Alert 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 humidiﬁer before an unsafe condition occurs.

OM-7945

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 60

OPERATION

Start-up commissioning checklist

Visit date _______________________________________________

Model # ________________________________________________

Serial # _________________________________________________

Tag # ___________________________________________________

Important: Troubleshooting information for this humidiﬁer is

located in the Vapor-logic Installation and Operation Manual shipped with your humidiﬁer. 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 ________________________________ Water pressure ________________ psi (must be between 25 and 80 psi [172 and 582 kPa] at 6.0 gpm)

 Supply water piping is 3/8" (DN10) pipe thread (side) or

½" (DN 15) pipe thread (bottom) connection or up sized for longer runs to maintain 25-80 psi at 6.0 gpm.

______________________________________________________ Gas supply  Natural  LP Manifold pressure _____ inches wc

_____ kPa _____ mbar Supply shutoff valve distance Supply line size Check for leaks Flue piping  Flue piping material  PVC  CPVC  Polypropylene  Stainless steel Size ________________________________ Rise ________________________________ Run ________________________________  Dedicated ﬂue gas and combustion air piping  Slight pitch toward drip tee  All pipe connections sealed and tight  All ﬂue gas condensate traps primed.  Plastic ﬂue gas vent pipe is not insulated.  Total developed length is within requirements.

Flue and combustion air pressures within spec at 100% output



Job site representation:

________________________________________________________

Job name _______________________________________________

Program code ___________________________________________

DriSteem rep ____________________________________________

Required clearances

 Top cover removal 18" (457 mm)

 Cleanout plate/electrical panel side 36" (914 mm)

Wiring

 Control transmitter

Gauge _________

 Shield

 High limit duct humidistat

Gauge _________

 Shield

 Airﬂow proving switch

 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 humidiﬁer

 45° angles used in piping

Continued

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 61

Start-up commissioning checklist

OPERATION

Dispersion  Ultra-sorb  Rapid-sorb  Single tube  Single tube with drain

 Space distribution unit

Condensate/drain piping

Water seal height of dispersion system

________________________________

 Air gap, open drain, or vacuum breaker within

12" (305 mm) vertical of LX unit

 Condensate return to tank

Cold-start burner ignition

Burner 1 lights after:  First try

 Second try

 Third try

Additional comments

__________________________________________________

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

 Flue gas oxygen range 5.5% ±1.0 at 100%

 Flue gas CO ppm 0-60 ppm typical,

400 ppm max allowable

Safety testing to verify function

Low water test ________________________________

High humidity limit test ________________________

Airﬂow test ________________________________

__________________________________________________

Aquastat test ________________________________

Blocked ﬂue test ________________________________

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 62

MAINTENANCE

Inspection recommendations

USER INSPECTION EVERY 30 DAYS

• Vent adapter and ﬂue gas inspection port are in place with vent pipe seated and secured.

• Physical support of the appliance is sound without sagging, cracks, or gaps between ﬂoor stand or tank ﬂanges.

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

• Burner ﬂame is primarily orange in color when operated under low demand, and primarily blue in color when operated under high demand.

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

• Check ignition sequence:

1. Blower RPMs ramp up and then level off.

2. Gas valve on (click) 4 seconds after blower starts

3. Flame on the burner

4. Flame rectiﬁcation - ﬂame is sensed

WARNING

SHUTDOWN PROCEDURE

To prevent severe personal injury or death from electrical shock, ﬁre, or explosion, follow this shutdown procedure before performing service or maintenance procedures on this humidiﬁer.

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

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

3. Close ﬁeld-installed manual supply water shut-off valve.

4. Close gas shut-off valves.

5. Burner stays on - visual ﬂame/glow

Table 60-1: GTS products of combustion

guidelines (at 100% demand)

CO2%

% 5.5% ±1.0%

Flue temperature

Thermal efﬁciency

NOx 20 ppm max, (domestic units)

Troubleshooting

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

comprehensive operation manual. Refer to it for troubleshooting information.

Must be less than 400 ppm. 0-60 ppm typical.

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

Less than 140°F (Less than 60°C)

Greater than 91%

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 63

Inspection recommendations

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

• Proper ﬁeld operation of burner. Measure CO, CO2%, O2%, ﬂue temperature, and burner efﬁciency at 100% demand with the tank at a boil. Verify that measurements are within the guidelines described in Table 60-1; if not, consult DriSteem.

• Flue passageways external to the appliance, such as vent connector, sealed combustion piping, 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 ﬂoor stand or tank ﬂanges.

• 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 70 through 79. Refer to the rating plate on the GTS humidiﬁer 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 HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 64

MAINTENANCE

Water quality and maintenance

WATER QUALITY RECOMMENDATIONS

The best way to determine how often your particular system needs maintenance is to remove the water detection probe and inspect the interior of the unit 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

• Occasional skimming and draining

• 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

• More frequent skimming and draining

• Periodic drain and ﬂush cycles

• Softened water dramatically reduces mineral accumulation Note: Solids, like silica, are not removed in the softening process.

Humidifier De-scaling solution

Scale buildup on humidiﬁer heat exchangers acts as an insulator, reducing humidiﬁer performance while increasing energy costs. To keep humidiﬁers operating as efﬁciently as possible, remove scale with DriSteem's Humidiﬁer De-scaling Solution, available for purchase from your DriSteem representative or distributor.

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

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

• RO/DI water virtually illuminates the build-up of minerals.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 65

Water quality and maintenance

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 humidiﬁers that use RO/DI water do not require regular cleaning, although regular inspections are advised.

• GTS humidiﬁers that use RO/DI water do not require skimming or draining and ﬂushing to remove precipitated minerals. However, at the end of a humidiﬁcation season, drain all DI humidiﬁers by programming the humidiﬁer to automatically drain at end-of-season.

COOL DOWN PROCEDURE

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

MAINTENANCE

• 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 display screens in Settings/Water Management) is less than room temperature (default setting is 50 °F [10 °C]) so the burners do not energize while cooling down the tank.

• Use the display to perform the cool down process.

1. Go to the Home screen.

2. Change mode to Drain, and allow approximately half the water to drain out of the tank. The fill valves may also be on to temper the water.

3. Change the mode back to Auto; the fill valve opens and the humidifier cools down with the additional cool water.

4. When the fill valve closes, go back into Drain mode, and allow the tank to drain completely. The humidifier should be cool enough to work on.

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

Vapor-logic Installation and Operation Manual.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 66

MAINTENANCE

Inspection and maintenance

1. Annually (also recommended when maintenance is performed)

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

• Inspect condensate lines for blockage and verify condensate neutralizer is in working condition (pH above 5).

• Inspect venting bird screens for blockage. Clean or replace if damaged.

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

- High limit switch

- Airﬂow proving switch

- Low water level probe. Pull out probe plug; ﬁll valve should energize.

- Flue temperature sensor. Observe the temperature read out on the Vapor-logic display during normal operation. The temperature will ﬂuctuate slightly during reﬁll events.

- Tank temperature sensor. Observe the tank temperature read out on the Vapor-logic home screen during a cold start of the humidiﬁer. The temperature will gradually increase to boiling temperature.

WARNING

Follow the shutdown procedure

Follow the shutdown procedure on Page 60 before performing service or maintenance procedures on this humidiﬁer. Failure to follow the shutdown procedure could cause electrical shock, ﬁre, or explosion and severe personal injury or death.

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

• Clean tank

- Drain 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 ﬁtting and thoroughly clean all scale and mineral buildup from that area.

- Replace the cleanout plate using new gaskets.

• Dismantle and clean drain valve and associated piping

• Clean the probes

- Access the probe assembly through the round pop cover on the roof panel.

- Disconnect the probe plug and cable assembly and unscrew the probe rod assembly from the humidiﬁer probe housing.

- Inspect the probe housing and clean, ensuring that all the housing passageways are clear.

- The scale should ﬂake 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 head for any signs of cracking, roughness, or deterioration. If found, replace entire probe assembly.

- Reassemble the probe assembly.

• Clean the skim/overﬂow port

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 67

Inspection and maintenance (continued)

MAINTENANCE

- Water should drain from the skimmer drain pipe after each daily probe check. This should be veriﬁed visually by a weekly inspection.

- Loosen deposits in and around the skimmer/overﬂow port with a long tool such as a screwdriver.

- If ﬂow through the water seal/P-trap is diminished due to mineral accumulation:

- Remove the water seal piping from the humidiﬁer and ﬂush out.

- Replace the water seal with new piping if the minerals have hardened in the water seal.

• Clean the tank temperature probe — Inspect the probe for mineral accumulation. The probe is located on the heat exchanger plate just above the combustion assembly. 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 60 in-lb (6.8 N-m). Note: Always install a new gasket when the clean out plate is reassembled.

- Verify that the probe head 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.

• After conﬁrming the plumbing connections are secure, perform a tank de-scaling procedure using the DriSteem GTS humidiﬁer tank de-scaling kit.

• When the chemical de-scaling process is complete:

- Replace and secure all covers and doors.

- Turn on the water supply.

- Turn on the electrical power.

- Turn on gas.

- Do not leave humidiﬁer unattended. Allow the humidiﬁer to cycle through multiple ﬁll cycles and verify that the humidiﬁer cover, cleanout plate, and probe holder gasket are not leaking.

• Verify proper operation of the humidiﬁer after servicing is complete.

Important:

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

WARNING

Prevent wiring errors

When servicing controls, before disconnecting, label all connections. Wiring errors can cause explosion or ﬁre, resulting in severe bodily injury, death, or signiﬁcant property damage.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 68

MAINTENANCE

Inspection and maintenance (continued)

3. Off-season maintenance

• Perform complete inspection and cleaning of the following:

- Probe rods

- Skimmer port and water seal

- Humidiﬁer tank

- Primary heat exchanger (see page 67 for instructions)

• Drain humidiﬁer tank and rinse.

• Perform a tank de-scaling using the DriSteem GTS humidiﬁer tank descaling kit.

• After cleaning, the humidiﬁer should remain empty until humidiﬁcation is required.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 69

MAINTENANCE

Inspection and maintenance:

REMOVAL OF THE PRIMARY HEAT EXCHANGER

1. Disconnect:

• Incoming gas line

• Water lines (at the primary tank secondary tank and Drain-kooler water tempering device)

• Main drain line

• Component power connections (blower, ignition module and tank temp sensor)

2. Remove secondary heat exchanger. See instructions.

3. Remove the water tempering device.

4. Remove nuts around the perimeter of the heat exchanger face.

5. Pull heat exchanger out horizontally Note: Support the heat exchanger face once it is free of the studs.

6. Reverse this procedure to reassemble. Note: Always install a new gasket when the heat exchanger is reassembled.

REMOVAL OF THE SECONDARY HEAT EXCHANGER(S)

1. Drain the humidifier tank.

Heat exchangers

2. Follow the shut down procedure on page 60.

3. Disconnect from the secondary heat exchanger(s):

• Combustion air hoses

• Combustion air vacuum line

• Incoming water

• Discharge water

• Pressure equalization hose

• Pressure switch

• Temperature switch

• Condensate p-trap

4. Remove the tri-clover clamp connecting the primary and secondary heat exchanger(s).

5. Loosen the worm gear clamp on the stainless steel collar at the top of the heat exchanger(s).

6. Remove eight bolts and nuts from the flange at the secondary heat exchanger(s) flue gas outlet.

7. Remove the four nuts from the bracket securing the secondary heat exchanger(s) to the primary tank, and allow it to drop free from the plastic flue adapter.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 70

MAINTENANCE

Combustion assemblies

REMOVING THE COMBUSTION ASSEMBLY

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 the shutdown procedure on Page 60.

2. Remove shroud.

3. Disconnect wiring to blowers, flame sensors, gas valves, and ignition controllers. Remove sealed combustion tube, pressure equalization tube, primary gas line and enhanced spark ignition gas supply line.

4. Remove the four burner assembly nuts from each assembly and pull the entire valve, blower, and burner assembly out.

5. Perform maintenance as required.

6. Reinstall the combustion assembly with the new gasket.

7. Reconnect all electrical wiring, intake venting, pressure switches, and gas supply lines.

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.

Note: To ease reassembly, disconnect components from one burner

assembly at a time, and clean each individually.

MAINTENANCE FREQUENCY

Under normal use conditions, the burner(s) should not need cleaning for a minimum of ﬁve 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 on page 69.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 71

Combustion assemblies

BURNER MAINTENANCE INSTRUCTIONS

To service the burner system, clean both the blower and the burner. Remove the blower(s) from the system and allow you to clean dust from the wheel. Remove the four nuts from each burner assembly 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.

IGNITOR AND FLAME SENSE ROD

MAINTENANCE

The enhanced spark ignition and ﬂame sensor rod, as well as their supporting gaskets, should be replaced at the same time every 5 years. The entire combustion assembly does not need to be removed to replace these components.

1. Follow the shutdown procedure on Page 60.

2. Remove shroud.

3. Disconnect flame sensor wire, ignition wire and enhanced spark ignition from gas line.

4. Remove the mounting nuts and pull the components free from the assembly.

5. Replace with the new components.

6. Reconnect flame sensor wire, ignition wire and enhanced spark ignition to the gas line.

7. Replace shroud.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 72

REPLACEMENT PARTS

GTS humidiﬁer (Models LX-50 through LX-150)

FIGURE 70-1: GTS HUMIDIFIER LX SERIES REPLACEMENT PARTS (MODELS LX-50 THROUGH LX-150)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OM-7966

Page 73

REPLACEMENT PARTS

GTS humidiﬁer LX series (Models LX-50 through LX-150)

Table 71-1: GTS humidifier LX series replacement parts (Models LX-50 through LX-150)

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

1 LEFT BURNER SHROUD GTS LX 50-150 600273

BACK SHROUD GTS LX 50/75/100 600274

BACK SHROUD GTS LX 150 600278 CLEANOUT PLATE ASSY GTS LX 150 304 184405-100

TOP SHROUD GTS LX 50/75/100 600271 CLEANOUT PLATE ASSY GTS LX 150 316 184406-100

TOP SHROUD GTS LX 150 600276

CLEANOUT PLATE ASSY GTS LX 50/75/100 304

CLEANOUT PLATE ASSY GTS LX 50/75/100

316

TANK ASSY LX 50/75/100 304SST 184400-050

184405-050

184406-050

4 RIGHT SHROUD GTS LX 50-150 600275 TANK ASSY LX 50/75/100 316SST 184401-050

FRONT SHROUD GTS LX 50/75/100 600272 TANK ASSY LX 150 304SST 184400-100

FRONT SHROUD GTS LX 150 600277 TANK ASSY LX 150 316SST 184401-100

6 HANDLE DOOR PLASTIC BLACK 405805-003

DRAIN MANIFOLD ASSY GTS LX 600199-100 FRAME GTS LX 150 22.75 X 31.75 184310-002

DRAIN MANIFOLD ASSY GTS LX EURO 600199-101 17 PROBE ASSY GTS LX 184315-003

BLOWER ASSY GTS LX 50/75/100 400092-050

BLOWER ASSY GTS LX 150 400092-150 GTS LX BURNER ASSY 150 600446

9 FLUE FLANGE 5'' TO 3'' WELD 161145-001 19 IGNITION CONTROL 24VAC SPARK 405811-001

SEC HX ASSY GTS LX 50/75/100 INDOOR 600375-001 20 VALVE 3/4'' NPT SST (NC) 505077-001

SEC HX ASSY GTS LX 50/75/100 OUTDOOR 600375-002 21

SEC HX ASSY GTS LX 150 INDOOR 600376-001 22

SEC HX ASSY GTS LX 150 OUTDOOR 600376-002 23 DRAIN 3/4'' INDOOR ASSY LX 184325-001

PRIMARY HX ASSY LX 50/75 304 184411-075

PRIMARY HX ASSY LX 100 304 184411-100

PRIMARY HX ASSY LX 150 304 184411-150

PRIMARY HX ASSY LX 50/75 316 184411-076

PRIMARY HX ASSY LX 100 316 184411-101 25 ADAPTER 3 TO 1 DURO VENT 3" 305394-003

FRAME GTS LX 50/75/100 22.75 X 22.75 184310-001

GTS LX BURNER ASSY 50/75/100 600445

INTERCONNECTING PIPING SEC HEAT EXCH 5''

GASKET 5.75X5.75 CONN 3" PIPING SILICONE

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY BSP

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY BSP

161125-001

308239-001

184330-001

184330-002

184330-011

184330-012

PRIMARY HX ASSY LX 150 316 184411-151 26 VALVE FILL SST ¼" 24V 0.125 ORF 505095

12 GASKET HT EXCH PRIMARY EPDM LX 50-300 308239-013 27 TRICLOVER CLAMP 3" C 207001-300

GASKET CLEANOUT PLATE LX 50/75/100 EPDM 308238-051 28 TRICLOVER GASKET 3" O-RING EPDM 207002-300

GASKET CLEANOUT PLATE LX 150 EPDM 308238-101 29 PRESSURE SWITCH 1" WC 127601-001

30 SUBPANEL ASSY GTS LX

DUAL THERMOSTAT

(OUTDOOR ENCLOSURE ONLY)

3/4" FREEZE PROTECTION VALVE

(OUTDOOR ENCLOSURE ONLY)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Contact DriSteem

600293

600086

Page 74

REPLACEMENT PARTS

GTS humidiﬁer (Models LX-200, LX-250, and LX-300)

FIGURE 72-1: GTS REPLACEMENT PARTS (MODELS LX-200 THROUGH LX-300)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OM-8015

Page 75

REPLACEMENT PARTS

GTS humidiﬁer LX series (Models LX-200, LX-250, and LX-300)

Table 73-1: GTS replacement parts for Models LX-200 through LX-300)

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

1 LEFT BURNER SHROUD GTS LX 200-300 600172

2 SHROUD BACK LEFT GTS LX 200-300 600407 CLEANOUT PLATE LX 200-600 316 SST 184405-601

3 SHROUD BACK RIGHT GTS LX 200-300 600408

4 TOP SHROUD GTS LX 200-300 600169 TANK ASSY GTS LX 200-300 316 184400-301

5 RIGHT SHROUD GTS LX 200-300 600173 20 FRAME LX 200-300 21.52 X 55.75 X 6.13 600153

6 SHROUD FRONT LEFT GTS LX 200-300 600409 21 PROBE ASSY GTS LX 184315-003

7 SHROUD FRONT RIGHT GTS LX 200-300 600410 22 GTS LX BURNER ASSY 200 TO 600 600396

8 SUPPORT, CENTER GTS LX 200-300 600411 23 IGNITION CONTROL 24VAC SPARK 405811-001

9 SUPPORT, CORNER GTS LX 200-300 600412 24 INTER CONN. PIPING SECONDARY HX 600108

10 HANDLE DOOR PLASTIC BLACK 405805-003 25

DRAIN MANIFOLD ASSY GTS LX 600199-100 26 DRAIN 3/4'' INDOOR ASSY LX 184325-001

DRAIN MANIFOLD ASSY GTS LX EURO 600199-101

BLOWER ASSY GTS LX 200-600 120V 400092-200

BLOWER ASSY GTS LX 200-600 230V (PP) 400092-241

13 SECONDARY HX ASSY LX 200/250 INDOOR 600236

CLEANOUT PLATE LX 200-600 304 SST 184405-600

TANK ASSY GTS LX 200-300 304 184400-300

GASKET 5.75X5.75 CONN 3" PIPING SILICONE

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY BSP

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY BSP

308239-001

184330-001

184330-002

184330-011

184330-012

14 PRESSURE SWITCH 1" WC 127601-001 28 VALVE 3/4'' NPT SST (NC) 505077-001

PRIMARY HX ASSY GTS LX 200-250 (304) 184410-250 29 SUBPANEL ASSY GTS LX

PRIMARY HX ASSY GTS LX 200-250 (316) 184410-251 30 MOUNT INTAKE/EXHAUST LX 200-300 600207

PRIMARY HX ASSY GTS LX 300 (304) 184410-300 31 ADAPTER 3 TO 1 DURO VENT 4" 305394-004

PRIMARY HX ASSY GTS LX 300 (316) 184410-301 32 TRICLOVER GASKET 4" O-RING EPDM 600248

16 GASKET HT EXCH PRIMARY EPDM LX 50-300 308239-013 33 TRICLOVER CLAMP 4" 600048

17 GASKET CLEANOUT EPDM LX 200-600 308238-102 34

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

COMBUSTION AIR INTAKE HOSE ASSY -2.5 DIA

35 VALVE FILL SST ¼" 24V 0.125 ORF 505095

DUAL THERMOSTAT

(OUTDOOR ENCLOSURE ONLY)

3/4" FREEZE PROTECTION VALVE

(OUTDOOR ENCLOSURE ONLY)

Contact DriSteem

600196

600293

600086

Page 76

REPLACEMENT PARTS

GTS humidiﬁer (Models LX-400 through LX-600)

FIGURE 74-1: GTS REPLACEMENT PARTS (MODELS LX-400 THROUGH LX-600)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

OM-7999

Page 77

REPLACEMENT PARTS

GTS humidiﬁer LX series (Models LX-400 through LX-600)

Table 75-1: GTS replacement parts for Models LX-400 through LX-600)

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

1 LEFT BURNER SHROUD GTS LX 400-600 600149 25 PROBE ASSY GTS LX 184315-003

2 LEFT BACK SHROUD GTS LX 600401 26 GTS BURNER ASSY LX 200-600 600396

3 RIGHT BACK SHROUD GTS LX 600402 27 IGNITION CONTROL 24VAC SPARK 405811-001

4 TOP SHROUD GTS LX 400-600 600146 28 VALVE 3/4" NPT SST (NC) 505077-001

5 RIGHT SHROUD GTS LX 600150 29

6 FRONT SHROUD GTS LX LEFT 600403 30

7 FRONT SHROUD GTS LX RIGHT 600404 31 DRAIN 3/4" INDOOR ASSY LX 184325-001

8 SUPPORT, CENTER GTS LX 400-600 600405

9 SUPPORT, CORNER GTS LX 400-600 600406

10 HANDLE DOOR PLASTIC BLACK 405805-003

DRAIN MANIFOLD ASSY GTS LX 600199-100

DRAIN MANIFOLD ASSY GTS LX EURO 600199-101 33 ADAPTER 3 TO 1 DURO VENT 6" 305394-006

BLOWER ASSY GTS LX 200-600 120V 400092-200 34 SUB PANEL ASSY GTS LX 600562

BLOWER ASSY GTS LX 200-600 230V 400092-241 35 MOUNT INTAKE/EXHAUST LX 400-600 600113

13 WELD FLUE ADAPTER 5" TO 6" 600534 36 MAINFOLD WELD GAS 2 BURNER 600268

INDOOR SECONDARY HEAT EXCHANGER ASS

LX-400 TO LX-600 (2X)

PRIMARY HX ASSY GTS LX 400-500 (304) 184410-500 38 HIGH POLISH QUICK CLAMP 600048

PRIMARY HX ASSY GTS LX 400-500 (316) 184410-501 39 COUPLING AND TUBE CLAMP 600066

600234 37 TRICLOVER GASKET 4" O-RING EPDM 600248

INTERCONNECTING PIPING SEC HEAT EXCHANGER 5"

GASKET 5.75 X 5.75 CONN 3" PIPING EPDM

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY NPT

MANIFOLD BLOCK FILL 3/8'' INDOOR ASSY BSP

MANIFOLD BLOCK FILL 3/8'' OUTDOOR ASSY BSP

600108

308239-001

184330-001

184330-002

184330-011

184330-012

GASKET HEAT EXCHANGER EPDM

LX-400 TO LX-600

17 GASKET CLEANOUT PLATE LX 400-600 EPDM 308238-102 41 VALVE FILL SST ¼" 24V 0.125 ORF 505095

CLEANOUT PLATE ASSY GTS LX 200-600 304 184405-600 42 PRESSURE SWITCH 1" WC 127601-001

CLEANOUT PLATE ASSY GTS LX 200-600 316 184405-601 43

TANK ASSY GTS LX 400-600 304 184400-600 44

TANK ASSY GTS LX 400-600 316 184400-601

24 FRAME GTS LX 600093

308239-014 40 ADAPTER 2 TO 1 600062

DUAL THERMOSTAT (OUTDOOR ENCLOSURE ONLY)

3/4" FREEZE PROTECTION VALVE (OUTDOOR ENCOSURE ONLY)

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

600293

600086

Page 78

REPLACEMENT PARTS

Electrical parts

FIGURE 76-1: GTS ELECTRICAL REPLACEMENT PARTS

Note: See Pages 78 and 79 for GTS Outdoor Enclosure replacement parts.

OM-7968

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 79

Electrical parts

Table 77-1: GTS electrical replacement parts

No. Description Part no.

1 MAIN CONTROLLER VL6 408496-006

2 DISPLAY VAPOR-LOGIC TOUCHSCREEN 408494

3 TRANSFORMER, 120V, 24V SEC - QC 408965-101

TRANSFORMER, 230/400, 24V SEC - 100VA (EUROPEAN) 408985-201

TRANSFORMER, 230/400, 24V SEC - 150VA (EUROPEAN) 408895-203

5 TRANSFORMER, 230/400, 115V SEC - 150VA (EUROPEAN) 408985-202

6 FAN SQ 24V 36CFM 3.13" X 1.5" 407115

7 TERMINAL 3 POSITION 10MM SPACING WECO (SDU OPTION) 530010-073

8 TERMINAL DIN RAIL 20A CENTER 408252-001

REPLACEMENT PARTS

9 SOCKET RELAY DPDT W/OUT TIME DELAY 407900-019

10 RELAY 24V DPDT FINDER 407900-016

11 BREAKER CIRCUIT 2A 480V 1POLE GE D-CURVE (EUROPEAN) 406775-107

12 BREAKER CIRCUIT 5A 480V 1POLE GE D-CURVE (EUROPEAN) 406775-112

13 BREAKER CIRCUIT 4A 480V 1POLE GE D-CURVE (SDU OPTION) 406775-109

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 80

REPLACEMENT PARTS

Outdoor enclosure

FIGURE 78-1: OUTDOOR ENCLOSURE ELECTRICAL REPLACEMENT PARTS

OM-7969

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 81

Outdoor enclosure

Table 79-1: Outdoor Enclosure electrical replacement parts

No. Description Part no.

1 MAIN CONTROLLER VL6 408496-006

2 DISPLAY VAPOR-LOGIC TOUCHSCREEN 408494

3 TRANSFORMER, 120V, 24V SEC - QC 408965-101

TRANSFORMER, 230/400, 24V SEC - 100VA (EUROPEAN) 408985-201

TRANSFORMER, 230/400, 24V SEC - 150VA (EUROPEAN) 408895-203

5 TRANSFORMER, 230/400, 115V SEC - 150VA (EUROPEAN) 408985-202

FAN ASSY CABINET 120V 185110-003

FAN ASSY EURO CABINET 230V 185110-004

7 TERMINAL 3 POSITION 10MM SPACING WECO (SDU OPTION) 530010-073

REPLACEMENT PARTS

8 TERMINAL DIN RAIL 20A CENTER 408252-001

9 SOCKET RELAY DPDT W/OUT TIME DELAY 407900-019

10 RELAY 24V DPDT FINDER 407900-016

11 BREAKER CIRCUIT 2A 480V 1POLE GE D-CURVE (EUROPEAN) 406775-107

12 BREAKER CIRCUIT 5A 480V 1POLE GE D-CURVE (EUROPEAN) 406775-112

13 BREAKER CIRCUIT 4A 480V 1POLE GE D-CURVE (SDU OPTION) 406775-109

BREAKER CIRCUIT 10A 480V 2POLE GE D-CURVE 406775-113

BREAKER CIRCUIT 4A 480V 2POLE GE D-CURVE (EUROPEAN) 406775-104

15 DUAL THERMOSTAT FOR OE 600293

16 FREEZE PROTECTION VALVE 600086

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 82

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 certiﬁed by AFNOR for use in all EU countries.

AUTHORIZED COUNTRIES OF DESTINATION

GTS humidiﬁers 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 humidiﬁer is classiﬁed 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 Deﬁnition: 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 speciﬁc category of your appliance.

Table 80-1: Gas specifications for European models

Volumetric ﬂow rate by gas category

Model GTS

LX Series

LX-50 1.41 m

LX-75 2.11 m3/h 2.58 m3/h 2.11-2.58 m3/h 1.20 m3/h 1.36 m3/h

LX-100 2.82 m3/h 3.44 m3/h 2.82-3.44 m3/h 1.60 m3/h 1.82 m3/h

LX-150 4.23 m3/h 5.16 m3/h 4.23-5.16 m3/h 2.40 m3/h 2.73 m3/h

LX-200 5.64 m3/h 6.88 m3/h 5.64-6.88 m3/h 3.20 m3/h 3.64 m3/h

LX-250 7.05 m3/h 8.60 m3/h 7.05-8.60 m3/h 4.00 m3/h 4.54 m3/h

LX-300 8.32 m3/h 10.15 m3/h 8.32-10.15 m3/h 4.72 m3/h 5.36 m3/h

LX-400 11.27 m3/h 13.76 m3/h 11.27-13.76 m3/h 6.39 m3/h 7.27 m3/h

LX-500 14.09 m3/h 17.20 m3/h 14.09-17.20 m3/h 7.99 m3/h 9.09 m3/h

LX-600 16.63 m3/h 20.30 m3/h 16.63-20.30 m3/h 9.43 m3/h 10.73 m3/h

2H-G20-20 mbar 2E-G20-20 mbar

2Es-G20-20 mbar

/h 1.72 m3/h 1.41-1.72 m3/h 0.80 m3/h 0.91 m3/h

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

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

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 83

European models only

Table 81-1: Specifications for European models

Model GTS

LX Series

LX-50 50 °C 1.2 mbar 5.9 g/s 1.2 g/s

LX-75 50 °C 1.2 mbar 8.9 g/s 1.8 g/s

LX-100 50 °C 1.2 mbar 11.8 g/s 2.4 g/s

LX-150 50 °C 1.2 mbar 17.8 g/s 3.6 g/s

LX-200 50 °C 1.2 mbar 23.7 g/s 3.6 g/s

LX-250 50 °C 1.2 mbar 29.6 g/s 3.6 g/s

LX-300 50 °C 1.2 mbar 35.0 g/s 3.6 g/s

LX-400 50 °C 1.2 mbar 47.4 g/s 3.6 g/s

LX-500 50 °C 1.2 mbar 59.2 g/s 3.6 g/s

Average ﬂue

temperature

Maximum

ﬂue back pressure

Mass ﬂow rate of

combustion products

Minimum mass ﬂow

combustion products

EUROPEAN MODELS

rate of

LX-600 50 °C 1.2 mbar 69.9 g/s 3.6 g/s

Table 81-2: GTS models, capacities, electrical specifications, and weights, European models

GTS

model

LX-50 23 0-17 0-18 DN50 (2") hose/BSP DN50 or 80 (2" or 3") 217 164 1.5

LX-75 34 0-25 0-27 DN50 (2") hose/BSP DN80 (3") 217 164 1.5

LX-100 45 0-33 0-36 DN50 (2") hose/BSP DN80 (3") 216 166 1.5

LX-150 68 0-50 0-54 DN50 (2") hose/BSP DN80 (3") 285 191 2.0

LX-200 91 0-67 0-72 DN80 (3") hose/BSP/ﬂange DN100 (4") 415 256 2.5

LX-250 113 0-82 0-89 DN80 (3") hose/BSP/ﬂange DN100 (4") 415 256 2.5

LX-300 136 0-98 0-106 DN80 (3") hose/BSP/ﬂange DN100 (4") 415 260 2.5

LX-400 181 0-132 0-143 DN100 (4") BSP/ﬂange DN150 (6") 729 426 3.5

LX-500 227 0-166 0-179 DN100 (4") BSP/ﬂange DN150 (6") 729 426 3.5

LX-600 272 0-195 0-211 DN100 (4") BSP/ﬂange DN150 (6") 731 436 3.5

* 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 Recommended ﬂue size

Operating

weight in kg

Shipping

weight in kg

Full load

amps

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 84

EUROPEAN MODELS

European models only

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.

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

• Maximum ﬂue temperature under normal operating conditions: 68.3 °C

• Maximum ﬂue temperature safety lockout 82.2°C

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

ELECTRIC SUPPLY

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

INLET WATER TEMPERATURE

See Table 34-1.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 85

European models only

TYPE C3 BOILERS

The terminal outlets from separate combustion and air supply circuits shall ﬁt inside a square of 100 cm and that the distance between the planes of the two oriﬁces shall be less than 100 cm.

TYPE C5 AND C6 BOILERS

The terminals for the supply of combustion air and for the evacuation of combustion products shall not be installed on opposite walls of the building.

TYPE C6 BOILERS

• With all non-certiﬁed control devices defeated during a worst case boil down condition, overheat combustion product temperature rating will not exceed 82.2°C.

• Minimum combustion product temperature output is 30°C.

• CO2 content at normal operating conditions is 8.5%.

EUROPEAN MODELS

CAUTION

Install connection for gas pressure test gauge

Gas pressure to the humidiﬁer 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.

• Maximum allowable pressure difference is 125 Pa Flue gas outlet maximum =112 Pa at maximum Flue gas outlet minimum = -12.5 Pa

Inlet air maximum =12.5 Pa Inlet air minimum = -112 Pa

• 25 m/s maximum allowable draught

• Condensate return into the humidiﬁer is allowed but should be minimized.

• Maximum allowable recirculation rate of 10% under worst case wind conditions.

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 86

Notes

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 87

Notes

GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Page 88

WARRANTY

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 humidiﬁer, 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 sales@dristeem.com

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

DRI-STEEM Corporation a subsidiary of Research Products Corporation DriSteem U.S. operations are ISO 9001:2015 certiﬁed

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

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

Continuous product improvement is a policy of DriSteem; therefore, product features and speciﬁcations 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 ﬁled for trademark registration in Canada and the European community.

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

TWO-YEAR LIMITED WARRANTY

DRI-STEEM Corporation (“DriSteem”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twentyseven (27) months from the date DriSteem ships such product, whichever date is the earlier. If any DriSteem product is found to be defective in material or workmanship during the applicable warranty period, DriSteem’s entire liability, and the purchaser’s sole and exclusive remedy, shall be the repair or replacement of the defective product, or the refund of the purchase price, at DriSteem’s election. DriSteem shall not be liable for any costs or expenses, whether direct or indirect, associated with the installation, removal or reinstallation of any defective product. The Limited Warranty does not include cylinder replacement for electrode steam humidiﬁers or media replacement for Wetted Media Systems.

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 modiﬁed 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. Excluded from the Limited Warranty are all consumable and wear and tear items such as cylinders, membranes, ﬁlters, or media replacements. These items are subject to usual wear and tear during usage.

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 ﬁrst 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. When a DriSteem humidiﬁer is purchased with a DriSteem RO system, an extended twenty-four (24) month coverage is included.

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

Patents pending.

Form No. GTS-LX-IOM-EN-0819 Part No. 890000-261 REV B