DriSteem XT Series User manual

XT SERIES
Electrode Steam Humidifiers
STEAM HUMIDIFICATION
Installation, Operation, and
Maintenance Manual
Read and save these instructions

ii XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING
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®Technical Support: North America: 800-328-4447
Europe: [phone]
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.
Hot surfaces and hot water
This steam humidification system has extremely hot surfaces. Water in steam cylinders, 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.
Contact with energized circuits can cause property damage, severe personal injury, or death as a result of electrical shock
or fire. Do not remove cabinet doors until electrical power is disconnected.
Follow the shutdown procedure on Page 58 before performing service or maintenance procedures on any part of the
system.
WARNING CAUTION
Indicates a hazardous situation that could result in death or
serious injury if instructions are not followed.
Indicates a hazardous situation that could result in damage to or
destruction of property if instructions are not followed.
WARNINGS AND CAUTIONS
Warnings & Cautions

iii
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
CAUTION
Follow steam piping recommendations
Controlling condensate flow and collection in an XT Series humidifier system is critical to maximize performance. Failure to follow
the steam piping recommendations in this manual can cause system pressure fluctuations and increase cylinder pressure, steam
velocity, and condensate noise.
Hot discharge water
Discharge water can be as hot as 212 °F (100 °C) and can damage some drain plumbing materials not rated for hot drain
water. To prevent such damage, make sure drain water tempering is selected, and supply water is not heated. Do not shut off
supply water to the cylinder before it is drained.
Excessive supply water pressure
Supply water pressure greater than 80 psi (550 kPa) can cause the humidifier to overflow.
WARNING
Electrical shock hazard
If the humidifier starts up responding to a call for humidity during maintenance, severe personal injury or death from
electrical shock could occur. To prevent such start-up, follow the shutdown procedure on Page 58.
WARNINGS

iv XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNINGS AND CAUTIONS ...................................................ii
TABLE OF CONTENTS ........................................................ iv
OVERVIEW.................................................................2
Dimensional drawings .....................................4
Dimensions and weights ...................................5
SPECIFICATIONS .............................................................6
Capacities, line currents, and fusing ...........................6
Dispersion options .......................................7
INSTALLATION ..............................................................8
Selecting a location ......................................8
Mounting ..............................................9
Fill cup extension kit .....................................11
Steam cylinder .........................................12
Piping: ...............................................13
Supply water and drain ................................13
Field piping overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
XT steam blowers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Humidifier wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sensor placement .......................................19
Outdoor enclosure: ......................................20
Operation..........................................20
XT outdoor enclosure voltage and weights ...................21
Dimensions .........................................22
Location ...........................................24
Mounting ..........................................25
Piping and electrical ..................................27
Freeze Protection Piping ................................29
Dispersion: ............................................30
Selecting the dispersion assembly location ...................30
Returning condensate to steam cylinder .....................31
Steam outlet connections ...............................32
Steam outlet connections with hose ........................33
Connecting to humidifier with tubing .......................37
Drip tee installation ...................................38
Single dispersion tube .................................39
Rapid-sorb .........................................42
XT steam blowers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
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.
Table of Contents
TABLE OF CONTENTS
Learn More

1
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION .............................................................. 54
Principle of operation ....................................54
Start-up checklist ........................................56
Model XTP ............................................57
MAINTENANCE ........................................................... 58
Shutdown and cool-down procedures .........................58
Replacing steam cylinder ..................................59
Drain valve............................................61
Troubleshooting.........................................63
TROUBLESHOOTING........................................................ 63
REPLACEMENT PARTS ......................................... 66
Table of Contents
TABLE OF CONTENTS

2XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Note: See detailed installation drawing on Page 14 and principle of operation on Page 54.
The Vapor-logic Installation and Operation
Manual ships with Model XTP humidifiers.
It is a comprehensive manual. Refer to it
for information about the keypad/display
and Web interface, and for troubleshooting
information.
OM-7661_aa
DriSteem XT Series electrode steam humidifiers use heat caused by electrical
resistance in their fill water to boil the fill water into humidification steam.
Steam output and water conductivity are managed via automatic draining and
filling. See Figure 2-1.
Steam to duct or XT steam blower
(see dispersion options on Page 8)
Electrodes
Electrical resistance in fill water
Overflow to drain
Supply water connection
Control panel for on-board controller
(see Figure 3-1)
Steam cylinder
High water sensor
Fill hose
Overflow
hose
Cylinder drain
Fill cup
Download DriSteem literature
DriSteem product manuals can be
downloaded, printed, and ordered from our
website: www.dristeem.com
* On-off switch for control board — not a safety shut-off to humidifier power wiring.
XTP Vapor-logic keypad/display
Softkeys for direct
menu access
Navigation buttons
for item selection
Controller on-off switch*
Status display and
menu selection
FIGURE 2-1: XT SERIES HUMIDIFIER COMPONENTS
FIGURE 2-1: XT SERIES HUMIDIFIER CONTROL PANEL
OVERVIEW
Table 2-1:
DriSteem supply water guidelines for
XT series electrode humidifiers
Supply water
conductivity
125-350 mS Low conductivity
cylinder*
350- 1250 mS Standard
cylinder
Chlorides Not limited
pH 6.5 to 8.5
Silica < 15 ppm
Demineralized, deionized, and reverse-
osmosis water cannot be used.
Supply water outside of these guidelines may
void your DriSteem warranty. Please contact
your DriSteem Representative or DriSteem
Technical Support if you need advice.
The start-up time will vary based on supply
water conductivity and operational conditions,
the humidifier may not reach the full steam
capacity during the first few hours of
operation. NOTE: For very low conductivity
supply water applications, when full capacity
is required quickly, Dristeem's resistance style
generators are recommended.
* For optimal low conductivity operation
enable the Mini Drain feature in your
Vapor-logic controller: Main > Setup > XT
management > Mini Drain > Enable.
See Table 6-1 for Low conductivity
availability.

3
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SUPPLY WATER
There are benefits and trade-offs to consider when the application allows a choice between hard and softened water:
• Hard water: The benefit of hard water is less frequent draining and filling than with softened water, which results in
better energy and water efficiency and more consistent steam output. However, cylinder replacement could be more
frequent with hard water, because hard water scale coats the electrodes. The harder the water, the more frequent the
need for a new cylinder.
• Softened water may be used in the XT series electrode humidifier. However, softened water ions stay in solution to
much higher concentrations than hard water ions. The result can be more frequent draining and filling, which results
in less energy and water efficiency, and less consistent steam output. While softened water can reduce scale build-up
in the cylinder, it can also shorten cylinder electrode life.
CONTROLLER
The Model XTP humidifier Vapor-logic®controller features menus for all humidifier functions, with a Web interface for
access to all functions via Ethernet. See "Operations" beginning on page 45 for details.
CONDUCTIVITY OF THE WATER
All of DriSteem’s isothermal humidifiers can use hard, softened, DI, or RO water except for XT Series electrode
humidifiers. Electrode humidifiers require conductive water and, therefore, cannot use water with little or no total
dissolve solids (TDS), such as DI or RO water.
Electrical conductivity in water is proportional to the concentration of conductive ions in the water. The higher the
concentration of conductive ions, the higher the conductivity of the water.
Resistivity is the inverse of conductivity. Ultra-pure water has so few conductive ions that it is, for all practical purposes,
infinitely resistive. Conductivity is determined by the following:
• Charge on the ions
• Size of the ions
• Temperature of the water
Conductivity and resistivity are critical to the operation of an electrode humidifier. In electrode humidifiers, steam output
is directly related to the resistance of the water in the steam cylinder and, therefore, to the conductivity of the water
between the electrodes.
As the water in an electrode humidifier cylinder heats up, the conductivity increases. When it boils into steam, the
concentration of the conductive ions increases until it reaches a threshold that triggers a drain-and fill cycle. This rids the
cylinder of highly conductive water and replaces it with less conductive supply water.
The more conductive the supply water and the higher the demand, the more quickly the threshold is reached, and the
more frequently the cylinder automatically drains and fills to stay within the parameters for the proper steam output. The
frequency and duration of the drain-and-fill cycles is proportional to the conductivity of the supply water. Generally, less
conductive supply water takes somewhat longer to reach full output at startup but requires less frequent drain-and-fill
cycles. This results in more consistent steam output over time and more efficient use of energy and water.
To test your job site's water conductivity use conductivity tester kit or ask your local municipalities for a water report.
OVERVIEW

4XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Notes:
* Fill cup extension (Figure 4-1) is required for the following:
- All XT Series humidifiers using Ultra-sorb or Rapid-sorb
- When developed length of steam tubing is more than 20' (6 m)
and duct static pressure exceeds 2" wc (498 Pa)
• Labeled dimensions: inches (millimeters).
• See mounting dimensions in Figure 9-1.
• See Figure 22-1 and Table 23-1 for units mounted in an
outdoor enclosure.
Models XTP 002 through 048
E
D
Electrical knockout
Top
Bottom
Front
Drain outlet
Electrical
knockouts
Supply water
connection
B
OM-7672
10.0 (254)
Fill cup extension kit*
OM-7673
D
B
E
F
Models XTP 050 through 096
10.0 (254)
21.0 (533)
Dispersion outlets
Drain outlets
Supply water connections
Fill cup extension kits*
A
A
C
C
F
Front
Top
Bottom
Electrical knockout
Dispersion outlet
E
E
Electrical
knockouts
21.0 (533)
15.1 (384)
D
D
G
G
Dimensional drawings
FIGURE 4-1: XT SERIES HUMIDIFIER DIMENSIONAL DRAWINGS
3" (76 mm)
SPECIFICATIONS

5
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 5-1:
XT Series humidifier dimensions by model number
Dimension Description
Model XTP
002, 003, 006 010, 017 025, 033, 042, 048 050, 067, 083, 096
inches mm inches mm inches mm inches mm
A Cabinet width 14.6 370 17.7 450 19.9 504 39.6 1005
B Cabinet height 20.6 523 24.1 612 25.6 650 25.6 650
C Cabinet depth 8.7 221 11.8 300 13.4 340 13.4 340
DCabinet back edge to steam/drain outlet
centers 4.5 114 6.0 152 6.7 170 6.7 170
E Cabinet left edge to steam/drain outlet centers 4.4 112 6.0 152 7.0 178 7.0 178
FCabinet back edge to supply water connection
center 6.1 156 9.2 235 10.8 275 10.8 275
GCabinet left edge to supply water connection
center 1.0 25 1.0 25 1.1 28 1.1 28
Refer to Figure 22-1 and Table 23-1 for units mounted in an outdoor enclosure.
Table 5-2:
XT Series humidifier weights by model number
Model XTP
002, 003 006 010, 017 025, 033, 042, 048 050, 067, 083, 096
lbs kg lbs kg lbs kg lbs kg lbs kg
Shipping weight 37 17 37 17 50 23 64 29 139 63
Maximum operating weight 38 17 46 21 79 36 115 52 219 99
Refer to Table 21-1 for units mounted in an outdoor enclosure.
Dimensions and weights
SPECIFICATIONS

6XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Capacities, line currents, and fusing
Table 6-1:
Line currents and recommended fusing for XT Series humidifiers(1)
Model Nominal steam capacity kW Phase Volts Maximum line current
(amps)
Recommended fusing
(amps)
Low conductivity
cylinder option**
XTP lbs/hr kg/h
002 5 2 1.7 1
120 17 25 yes
208 10 15 yes
230 8 15 yes
240 8 15 yes
003 10 5 3.3
1
208 19 25 yes
230 17 25 yes
240 17 25 yes
277 14 20 yes
400 10 13 yes
480 8 15 N/A
600 7 10 yes
3
208 11 15 N/A
240 10 15 N/A
400 6 10 yes
480 5 10 yes
600 4 10 yes
006 18 8 6.0
1
208 35 45 N/A
230 31 40 N/A
240 30 40 N/A
277 26 35 N/A
400 18 25 yes
480 15 20 yes
600 12 15 yes
3
208 20 25 N/A
240 17 25 N/A
400 10 13 yes
480 9 15 yes
600 7 10 yes
010 30 14 10.0 3
208 33 45 N/A
240 29 40 N/A
400 17 25 N/A
480 14 20 yes
600 12 15 yes
017 50 22 16.5 3
208 55 70 yes
240 48 60 yes
400 29 40 yes
480 24 35 yes
600 19 25 yes
025 75 34 25.0 3
400 43 63 yes
480 36 50 yes
600 29 40 yes
033 100 45 33.3 3
400 58 80 yes
480 48 70 yes
600 39 50 yes
042 125 57 41.7 3
400 72 100 yes
480 60 80 yes
600 48 70 yes
048 143 65 47.8 3
400 80 100 yes
480 69 90 yes
600 55 70 yes
050* 150 68 50.0 3
400 2 x 43 2 x 63 yes
480 2 x 36 2 x 50 yes
600 2 x 29 2 x 40 yes
067* 198 90 66.7 3
400 2 x 58 2 x 80 yes
480 2 x 48 2 x 70 yes
600 2 x 39 2 x 50 yes
083* 250 113 83.3 3
400 2 x 72 2 x 100 yes
480 2 x 60 2 x 80 yes
600 2 x 48 2 x 70 yes
096* 287 130 95.7 3
400 2 x 80 2 x 100 yes
480 2 x 69 2 x 90 yes
600 2 x 55 2 x 70 yes
(1) For units with outdoor enclosure:
• If unit is a model XTP002 - XTP-048 without heater package, add 1 amp to "Maximum Line Current".
• If unit is a model XTP002 - XTP-048 with heater package, add 5 amps to " Maximum Line Current ".
* These models have two steam cylinders and require independent service connections.
** For part numbers refer to DriSteem parts website.
SPECIFICATIONS