DriSteem XT Series User manual

XT Series
Electrode Steam Humidifiers
Installation, Operation,
and Maintenance Manual

1BHFJJt%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBM
Warnings and cautions
8BSOJOHTBOEDBVUJPOT
WARNING
Indicates a hazardous situation that could result in death or
serious injury if instructions are not followed.
CAUTION
Indicates a hazardous situation that could result in damage to
or destruction of property if instructions are not followed.
mc_051508_1145
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.
DRI-STEEM®technical support: [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 pipes, 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 48 before performing service or maintenance procedures on any part of
the system.

%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBMt1BHFJJJ
8BSOJOHTBOEDBVUJPOT
CAUTION
Follow steam piping recommendations
Controlling condensate flow and collection in an XT Series humidifier system is critical to maximum 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.
mc_123010_1520-XT
WARNING
Electrical shock hazard
If the humidifier starts up responding to a call for humidity during maintenance, severe bodily injury or death from
electrical shock could occur. To prevent such start-up, follow the shutdown procedure on Page 48.

1BHFJWt%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBM
Warnings and cautions ................................ ii
Product overview .................................... 2
Models, capacities, and electrical specifications ............ 4
Dimensional drawings ................................. 6
Dimensions and weights ............................... 7
Dispersion options ................................... 8
Installation
Selecting a location .....................................9
Staging multiple XT Series humidifiers ....................9
Mounting:
Keyhole locations and dimensions .....................10
Removing steam cylinder .............................11
Wall mounting humidifier ............................11
Fill cup extension kit ...................................12
Steam cylinder.........................................13
Piping:
Supply water and drain ...............................14
Field piping overview ................................15
XT steam blowers....................................16
Humidifier wiring .....................................17
Sensor placement ......................................19
Dispersion:
Selecting the dispersion assembly location ..............20
Returning condensate to steam cylinder ................21
Condensate return guidelines............................21
Steam outlet connections,
Models 002 through 025 ..............................22
Steam outlet connections with hose,
Models 033 through 083 ..............................23
Interconnecting piping requirements
Condensate control and collection ..................24
Connecting to humidifier with steam hose ...........25
Single dispersion tube
Dispersion tube with or without condensate drain ....26
Dispersion tube without condensate drain,
XT Models 002, 003, and 006.......................26
Dispersion tube with condensate drain,
XT Models 002 through 017 .......................27
Drip tee installation ..................................28
Connecting to humidifier with tubing or pipe ...........29
5BCMFPGDPOUFOUT

%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBMt1BHF
5BCMFPGDPOUFOUT
Rapid-sorb®.........................................30
Rapid-sorb with models 025 through 042 ...............32
Rapid-sorb with Models 050 through 083 ...............33
With header outside of duct for horizontal airflow ....34
With header inside of duct for horizontal airflow .....34
Steam supply connections to Rapid-sorb header ......36
Condensate drain connections to Rapid-sorb header . . 36
Ultra-sorb®Model LV ................................36
XT steam blowers....................................37
Mounting XT steam blower on top of humidifier .....39
Remote mounting XT steam blower.................40
Wiring XT steam blowers..........................41
Piping condensate to humidifier fill cup .............41
Piping condensate to drain.........................41
Operation
Principle of operation ..................................42
Start-up checklist ......................................44
Control panel, Model XTS ..............................45
Start-up procedure, Model XTS..........................46
Start-up procedure, Model XTP..........................47
Maintenance
Shutdown procedure ...................................48
Scheduled maintenance ................................48
Steam cylinder service life...............................48
Cool-down procedure
Model XTS .........................................48
Model XTP .........................................48
Replacing steam cylinder................................49
Drain valve............................................50
Troubleshooting
Model XTS .........................................51
Model XTP .........................................51
DRI-STEEM Technical Support .........................51
Replacement parts:
XTS/XTP Models 002 through 042.....................54
XTP Models 050 through 083 .........................56
Steam blowers.......................................58
Warranty .................................... Back cover

1BHFt%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBM
1SPEVDUPWFSWJFX
Note: See detailed installation drawing on Page 15
and detailed principle of operation on Page 42.
Figure 2-1:
XT Series humidifier
OM-7661X
DRI-STEEM XT Series electrode steam humidifiers use heat caused
by electrical resistance in their fill water to boil the water into
humidification steam. Steam output and water conductivity are
managed via automatic draining and filling. See the components
and operation summary in Figure 2-1.
Steam to duct or
XT steam blower
(see dispersion
options on Page 8)
Electrodes
Electrical resistance
in fill water
Overflow to drainSupply 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 DRI-STEEM literature
DRI-STEEM product manuals can be
downloaded, printed, and ordered from our
website: www.dristeem.com

%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBMt1BHF
1SPEVDUPWFSWJFX
Figure 3-1:
XT Series humidifier control panels
Model XTP Vapor-logic4 keypad/displayModel XTS standard controller keypad
LED indicators
On-off / function
selection button
Fill
Steam
Drain
Service
Softkeys for direct menu
access
Navigation buttons for item
selection
System alarms
Cylinder status
Set point
System messages
Mode
Room RH
Output
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 soft 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: The benefit of softened water is longer cylinder
life (depending on water chemistry) than with hard water,
because softened water does not coat the electrodes nearly
as much as hard water. However, softened water ions stay in
solution to much higher concentrations than hard water ions.
This requires more frequent draining and filling, which results
in less energy and water efficiency and less consistent steam
output.
Controller
The standard controller in Model XTS humidifiers features
push-button operation, with indicators for operating status and
troubleshooting information. See “Operation” beginning on Page
42 for details.
The Vapor-logic4 controller in Model XTP humidifiers features
menus for all humidifier functions, with a Web interface for access
to all functions via Ethernet.
Recommended supply water conductivity for
DRI-STEEM electrode humidifiers is 125 to 1250
μS/cm (roughly comparable to water hardness of
3 to 36 grains per gallon).
Demineralized, deionized, and reverse-osmosis
water cannot be used. These water types are not
conductive enough for electrode humidifiers.
The
Vapor-logic
®
4 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.
Controller on-off switch* Controller on-off switch*
* On-off switch for control board — not a safety shut-off to humidifier power wiring.

1BHFt%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBM
.PEFMTDBQBDJUJFTBOEFMFDUSJDBM
TQFDJGJDBUJPOT
Table 4-1:
XT Series humidifier technical data
XTS / XTP
model*
Input
power
(kW)
Nominal steam
capacity
Nominal current draw (amps) **
Single-phase Three-phase
lbs/hr kg/h 230V 400V 400V
002 1.7 5 2 7 — —
003 3.3 10 5 15 8 5
006 6.0 20 8 26 15 9
010 10.0 30 14 — — 14
017 16.5 50 22 — — 24
025 25.0 75 34 — — 36
033 33.3 100 45 — — 48
042 41.7 125 57 — — 60
050*** 50.0 150 68 — — 2 x 36
067*** 66.7 200 91 — — 2 x 48
083*** 83.3 250 113 — — 2 x 60
*XTS models include standard controller.
XTP models include Vapor-logic4 controller.
** For circuit protection requirements, see Table 5-1.
*** Model XTP only. These models have two steam cylinders and require
independent service connections.

%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBMt1BHF
Table 5-1:
Line currents and recommended fusing for XT Series humidifiers
XTS / XTP
model kW Phase Volts Maximum line current (amps) Recommended fusing (amps)
002 1.7 1 230 9 13
003 3.3
1400 10 15
3400 6 10
006 6.0
1400 18 25
3400 10 13
010 10.0 3 400 17 25
017 16.5 3 400 29 40
025 25.0 3 400 43 63
033 33.3 3 400 58 80
042 41.7 3 400 72 100
050* 50.0 3 400 2 x 43 2 x 63
067* 66.7 3 400 2 x 58 2 x 80
083* 91.7 3 400 2 x 72 2 x 100
*Model XTP only. These models have two steam cylinders and require independent service connections.
-JOFDVSSFOUTBOEGVTJOH

1BHFt%3*45&&.954FSJFT&MFDUSPEF4UFBN)VNJEJGJFS*OTUBMMBUJPO0QFSBUJPOBOE.BJOUFOBODF.BOVBM
Figure 6-1:
XT Series humidifier dimensional drawings
Notes:
*Fill cup extension kit is required and ships with Models 025 through 083 (ships loose). It is also required for Models 010 and 017 if maximum developed
length of steam tubing is more than 20' (6 m) and duct static pressure exceeds 2" wc (498 Pa), and all XT Series humidifiers using Rapid-sorb or Ultra-sorb.
t -BCFMFEEJNFOTJPOTJODIFTNJMMJNFUFST
t 4FFNPVOUJOHEJNFOTJPOTBOEFMFDUSJDBMLOPDLPVUTJOFigure 10-1.
Model XTS / XTP 002 through 042
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
Model XTP 050 through 083
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
%JNFOTJPOBMESBXJOHT