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
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
1
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
2
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
3
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
4
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
5
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
6
Table of contents
OPERATION ..............................................................
56
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
7
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
8
pH
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.
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
9
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
10
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
3
/h
Water usage
at maximum
capacity
gals/hrlitres/
hr
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
11
SPECIFICATIONS
Indoor dimensions
FIGURE 12-1: LX MODELS 50 - 150 INDOOR UNIT DIMENSIONS
Side view Front view Top view
C
B
See "Indoor unit dimensions" on page 13-1.
R
E
F
D
O
Q
P
T
L
N
M
S
K
A
J
G
H
J
OM-7946
FIGURE 12-2: LX MODELS 200 - 300 INDOOR UNIT DIMENSIONS
Side view Front view Top view
R
C
L
N
B
See "Indoor unit dimensions" on page 13-1.
M
T
K
S
P
E
O
D
F
Q
A
G
H
J
OM-8014
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
12
Indoor dimensions
FIGURE 13-1: LX MODELS 400 - 600 INDOOR UNIT DIMENSIONS
Side view Front view Top view
R
SPECIFICATIONS
P
E
G
D
C
B
For outdoor dimensions see page 21.
L
N
M
K
S
F
Q
T
A
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
D
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
G
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
K
Gas inlet position
L 4.6 119 4.6 119 14.3 363 14.3 363
M
Drain position
N 4.5 114 4.5 114 8 203 8 203
O
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
S
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
H
J
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
13
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
14
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)
36" (914 mm)
OM-8012
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
15
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
16
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)
B
See "Indoor unit dimensions" on page 13-1.
A
C
21.125" (537mm)
OM-7970
OM-7962
FIGURE 17-2: LX SERIES WITH FLOOR STAND MOUNT (MODEL 150)
B
See "Indoor unit dimensions" on page 13-1.
A
C
21.125" (537mm)
OM-8021
OM-8022
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
17
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
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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
19
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
20
Outdoor enclosure: Dimensions
FIGURE 21-1: OUTDOOR ENCLOSURE TOP VIEW
INSTALLATION
B
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
H
J
F D
Ventilation fans
Control cabinet
Access panel door
Pipe chase
G
E
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
D
Pipe chase position
E 6.51 165.28 6.51 165.3 2.048 52.02 2.05 52.04
F
Pipe chase size
G 11 279.4 11 279.4 16 406.4 16 406.4
H
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
21
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
C
L
K
A
B
A
OM-8008 OM-8009
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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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
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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
24
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)
N
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
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