XT SERIES Installation, Operation, and Maintenance

XT SERIES Installation, Operation, and Maintenance
READ AND SAVE THESE INSTRUCTIONS
XT SERIES
Electrode Steam Humidifiers
Installation, Operation,
and Maintenance Manual
Warnings and cautions
WARNINGS AND CAUTIONS
CAUTION
WARNING
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.
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.
DriSteem® Technical Support:
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.
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 50 before performing service or maintenance procedures on any part of the
system.
ii
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Warnings and cautions
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 50.
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
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
iii
Table of contents
ATTENTION INSTALLER
Read this manual before installing.
Leave manual with product owner.
WARNINGS AND CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
DriSteem® Technical Support
800-328-4447
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
WHERE TO FIND MORE INFORMATION
Our web site:
The following documents are available on our
web site: www.dristeem.com
• Catalogs
– XT Series
– Ultra-sorb
• Installation, Operation, and Maintenance
manuals (IOM)
– Ultra-sorb
– Vapor-logic controller (includes
humidifier operation and troubleshooting)
• DriSteem Humidification System Design
Guide (includes steam loss tables and
general humidification information)
DriCalc®:
DriCalc, our software for humidification system
sizing and selection, can be ordered at our
web site. Also in DriCalc:
• Library of installation guides
• Dispersion and sensor placement in ducts
and air handlers
• Vertical airflows
Call us at 800-328-4447
Obtaining documents from our web site or
from DriCalc is the quickest way to view our
literature, or we will be happy to mail literature
to you.
iv
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models, capacities, and electrical specifications
Line currents and fusing . . . . . . . . . . . . . . . . . .
Dimensional drawings . . . . . . . . . . . . . . . . . . .
Dimensions and weights . . . . . . . . . . . . . . . . .
Dispersion options . . . . . . . . . . . . . . . . . . . . .
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.4
.5
.6
.7
.8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Selecting a location . . . . . . . . . . . . . . . . . .
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . .
Fill cup extension kit . . . . . . . . . . . . . . . . . .
Steam cylinder . . . . . . . . . . . . . . . . . . . . . .
Piping: . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply water and drain . . . . . . . . . . . . .
Field piping overview. . . . . . . . . . . . . . .
XT steam blowers. . . . . . . . . . . . . . . . . .
Humidifier wiring. . . . . . . . . . . . . . . . . . . . .
Sensor placement . . . . . . . . . . . . . . . . . . . .
Dispersion: . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the dispersion assembly location
Returning condensate to steam cylinder . .
Steam outlet connections . . . . . . . . . . . .
Steam outlet connections with hose . . . . .
Interconnecting piping requirements . . . . .
Single dispersion tube . . . . . . . . . . . . . .
Drip tee installation . . . . . . . . . . . . . . . .
Connecting to humidifier with tubing . . . .
Rapid-sorb . . . . . . . . . . . . . . . . . . . . . .
Ultra-sorb . . . . . . . . . . . . . . . . . . . . . . .
XT steam blowers. . . . . . . . . . . . . . . . . .
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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. .9
. 10
. 12
. 13
. 14
. 14
. 15
. 16
. 18
. 20
. 22
. 22
. 23
. 24
. 25
. 27
. 30
. 32
. 33
. 34
. 40
. 41
Table of contents
46
. 46
. 48
. 49
. 50
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principle of operation
Start-up checklist . . . .
Model XTP . . . . . . . .
Model XTS . . . . . . . .
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52
. 52
. 53
. 54
. 55
. 60
. 65
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown and cool-down procedures
Replacing steam cylinder . . . . . . . . .
Drain valve . . . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . .
Replacement parts . . . . . . . . . . . . . .
Accessories . . . . . . . . . . . . . . . . . . .
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WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
68
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
1
Product overview
PRODUCT OVERVIEW
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.
FIGURE 2-1: XT SERIES HUMIDIFIER COMPONENTS
Steam to duct or XT steam blower
(see dispersion options on Page 8)
Control panel for on-board controller
(see Figure 3-1)
Fill cup
High water sensor
Steam cylinder
Electrodes
Overflow
hose
Electrical resistance in fill water
OM-7661X
Cylinder drain
Fill hose
Supply water connection
Overflow to drain
Note: See detailed installation drawing on Page 15 and principle of operation on Page 44.
2
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Download DriSteem literature
DriSteem product manuals can be
downloaded, printed, and ordered from our
website: www.dristeem.com
Product overview
SUPPLY WATER
Recommended supply water conductivity for
DriSteem electrode humidifiers is 125 to 1250
μS/cm (roughly comparable to water hardness
of 3 to 36 grains per gallon).
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: 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.
Demineralized, deionized, and reverseosmosis water cannot be used. These water
types are not conductive enough for electrode
humidifiers.
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.
CONTROLLER
The Model XTS humidifier standard controller features push-button operation,
with indicators for operating status and troubleshooting information. See
“Operation” beginning on Page 45 for details.
The Model XTP humidifier Vapor-logic® controller features menus for all
humidifier functions, with a Web interface for access to all functions via
Ethernet.
FIGURE 3-1: XT SERIES HUMIDIFIER CONTROL PANEL
Standard control panel
Vapor-logic keypad/display
Status display and
menu selection
On-off / function
selection button
Fill
Steam
Drain
Indicator lights
Softkeys for direct
menu access
Navigation buttons
for item selection
Service
Controller on-off switch*
Controller on-off switch*
* On-off switch for control board — not a safety shut-off to humidifier power wiring.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
3
SPECIFICATIONS
Line currents and fusing
Table 4-1:
Line currents and recommended fusing for XT Series humidifiers (North America)
Model
Nominal steam capacity
XTS / XTP
lbs/hr
kg/h
002
5
2
kW
Phase
1.7
1
1
003
10
5
3.3
3
1
006
18
8
6.0
3
010
017
025
033
042
048
XTP050*
XTP067*
XTP083*
XTP096*
30
50
75
100
125
143
150
198
250
287
14
22
34
45
57
65
68
90
113
130
10.0
16.5
25.0
33.3
41.7
47.8
50.0
66.7
83.3
95.7
3
3
3
3
3
3
3
3
3
3
Volts
Maximum line current (amps)
Recommended fusing (amps)
120
17
25
208
10
15
240
8
15
208
19
25
240
17
25
277
14
20
480
8
15
600
7
10
208
11
15
240
10
15
480
5
10
600
4
10
208
35
45
240
30
40
277
26
35
480
15
20
600
12
15
208
20
25
240
17
25
480
9
15
600
7
10
208
33
45
240
29
40
480
14
20
600
12
15
208
55
70
240
48
60
480
24
35
600
19
25
480
36
50
600
29
40
480
48
70
600
39
50
480
60
80
600
48
70
480
69
90
600
56
70
480
69
90
600
56
70
480
2 x 48
2 x 70
600
2 x 39
2 x 50
480
2 x 60
2 x 80
600
2 x 48
2 x 70
480
2 x 69
2 x 90
600
2 x 56
2 x 70
* Model XTP only. These models have two steam cylinders and require independent service connections.
mc_052312_1618
4
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SPECIFICATIONS
Dimensional drawings
FIGURE 5-1: XT SERIES HUMIDIFIER DIMENSIONAL DRAWINGS
Models XTP 050 through 096
Models XTS / XTP 002 through 048
Top
E
Top
Electrical knockout
Dispersion outlet
21.0 (533)
E
D
D
Electrical knockout
Front
Fill cup extension kit*
Dispersion outlets
10.0 (254)
Front
Fill cup extension kits*
10.0 (254)
B
B
A
Bottom
Drain outlet
Supply water
connection
C
F
Electrical
knockouts
A
15.1 (384)
Bottom
G
D
Electrical
knockouts
OM-7672
Supply water connections
G
E
C
OM-7673
Notes:
* Fill cup extension (Figure 5-1) 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 and electrical knockouts in Figure 10-1.
F
D
Drain outlets
E
21.0 (533)
mc_051712_1212
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
5
SPECIFICATIONS
Dimensions and weights
Table 6-1:
XT Series humidifier dimensions by model number
Model XTS / XTP
Dimension
Description
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
D
Cabinet 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
F
Cabinet back edge to supply water connection
center
6.7
170
9.5
241
11.1
282
11.1
282
G
Cabinet left edge to supply water connection
center
1.0
25
1.0
25
1.1
28
1.1
28
* Model XTP only
mc_051712_1214
Table 6-2:
XT Series humidifier weights by model number
Model XTS / 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
* Model XTP only
mc_051712_1215
6
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SPECIFICATIONS
Dispersion options
The duct dispersion options in Figure 7-1 and the open space dispersion
options in Figure 7-2 are available for XT Series humidifiers. For installation
details, see “Dispersion” beginning on Page 22.
FIGURE 7-2: XT STEAM BLOWERS
Mounted on top of humidifier
FIGURE 7-1: XT SERIES HUMIDIFIER DUCT DISPERSION OPTIONS
Ultra-sorb
OM-7670
OM-7667
Mounted up to 10' (3 m) away from
humidifier
Rapid-sorb
OM-7668
OM-7698
Single dispersion tube
OM-7669
Note: Models XTS / XTP 010 and larger require condensate drain. See Page 29.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
7
INSTALLATION
Selecting a location
HUMIDIFIER
Staging multiple humidifiers
When selecting a location for the humidifier, consider the following:
Up to four Model XTP humidifiers can be
staged to operate in sequence. In a sequenced
application, one control input signal is divided
into user-selectable control input signals for
the connected humidifiers. See the Vapor-logic
Installation and Operation Manual for
instructions on staging multiple humidifiers.
• Proximity to the duct
Install the humidifier near the air duct system where the dispersion assembly
will be located. The maximum recommended length for steam hose
connecting a single humidifier to a dispersion assembly is 10' (3 m). The
maximum recommended developed length for tubing connecting a single
humidifier to a dispersion assembly is 20' (6 m).
For more information about installing dispersion assemblies, see
“Dispersion” beginning on Page 21.
FIGURE 8-1: XT SERIES HUMIDIFIER
RECOMMENDED MINIMUM CLEARANCES
36" (914 mm)
front clearance
• Elevation of the installed dispersion assembly
The recommended installation location for the dispersion assembly is at an
elevation higher than the humidifier. However, if the dispersion assembly
must be installed at an elevation lower than the humidifier, install a drip tee
and drain. See “Drip tee installation” on Page 31.
16"
(400 mm)
Before installing a dispersion assembly or interconnecting piping, review all
pitch requirements in the “Dispersion” section of this manual.
• Temperature and relative humidity (RH):
Install humidifier only in locations that meet the following temperature and
RH requirements:
- Maximum ambient temperature: 104 °F (40 °C)
3"
(76 mm)
- Minimum ambient temperature: 41 °F (5 °C)
- Maximum ambient humidity: 80% RH (non-condensing)
• Required clearances (see Figure 9-1)
• Electrical connections
Electrical power supply connections are at the lower or upper right rear
corner of the unit. See “Humidifier wiring” on Pages 18 and 19.
• Supply water and drain piping connections
Water supply piping and drain connections are at the bottom of the
cabinet. See “Piping” on Page 14.
• Exterior wall insulation
Install the humidifier on an exterior wall only if the wall is properly
insulated.
DISPERSION CONTROL DEVICES
See Figure 21-1 for recommended installation locations for the dispersion
assembly and associated control devices.
8
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
15" (380 mm)
3" (76 mm)
between
units
OM-7664
mc_051712_1218
INSTALLATION
Mounting
FIGURE 9-1: XT SERIES HUMIDIFIER MOUNTING KEYHOLE LOCATIONS
Models XTS / XTP 002 through 048
0.390" x 0.719"
(9.9 x 18.3 mm)
dia. keyholes
A
Models XTP 050 through 096
0.390" x 0.719"
(9.9 x 18.3 mm)
dia. keyholes
B
E
A
B
C
C
D
D
OM-7663
OM-7662
0.390" (9.9 mm)
dia. holes
0.390" (9.9 mm)
dia. holes
mc_051712_1226
Table 9-1:
XT Series humidifier mounting keyhole dimensions
Model XTS / XTP
Dimension
002, 003, 006
010, 017
025, 033, 042, 048
050*, 067*, 083*, 096*
inches
mm
inches
mm
inches
mm
inches
mm
A
3.9
100
7.1
180
7.5
190
14.0
356
B
3.0
75
3.6
92
3.4
86
3.3
84
C
3.2
81
4.4
112
4.1
104
4.1
104
D
14.0
355
16.3
414
18.9
480
18.9
480
E
—
—
—
—
—
—
19.0
483
* Model XTP only
mc_051712_1227
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
9
INSTALLATION
Mounting
Unpack the humidifier from the shipping carton, and remove the cabinet doors
and steam cylinder.
Note: When first unpacking the humidifier, cut and remove the shipping strap
that goes around the cylinder and through the cylinder guides. This strap
does not need to be replaced.
REMOVING STEAM CYLINDER
If sent to this page from the “Maintenance” section, and the humidifier has
been operating, make sure the cylinder is empty and cooled before removing
it. See the shutdown and cool-down procedures on Page 51.
1. Disconnect electrode and high water sensor connectors from steam
cylinder.
2. Place hands palms-down below cylinder on both sides of drain outlet.
3. Press up against bottom of cylinder with backs of hands while pressing
down against cabinet floor with fingers.
4. Raise cylinder until drain outlet clears drain valve body, and remove
cylinder from cabinet.
WALL MOUNTING HUMIDIFIER
Mount the humidifier level and plumb using the lag bolts provided. Follow the
instructions below for mounting on a wood stud wall.
1. Mount spanner boards on wall, spanning at least two studs. Position one
board at top of cabinet (for the lag bolts), and other board at bottom of
cabinet.
2. Predrill pilot holes in spanner boards, and secure humidifier to spanner
boards with lag bolts.
Note: Use the appropriate mounting methods and mounting hardware for other
wall types.
10
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING
Mounting hazard
Mount humidifier per the instructions
in this manual and to a structurally
stable surface. Improper mounting of
the humidifier can cause it to fall or tip,
resulting in severe personal injury or
death.
mc_060110_1540
INSTALLATION
Fill cup extension kit
FIGURE 11-1: FILL CUP EXTENSION KIT
A fill cup extension (Figure 11-1) is required for the following:
Fill cup
(see inset below)
• 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)
Overflow elbow
REMOVING EXISTING FILL CUP
Remove the existing fill cup as follows:
1. Remove steam cylinder from XT cabinet (if not already out).
2. Expand spring clamps and slide them up cylinder fill hose and supply
water hose, and disconnect hoses from cylinder fill hose connection and
fill valve adapter.
3. Disconnect overflow hose from overflow elbow.
4. Remove fill cup and hoses (fill cup is press fit into top of XT cabinet).
Overflow hose (C)
Cylinder fill hose (B)
Supply water
hose (A)
INSTALLING FILL CUP EXTENSION KIT
Fill valve adapter
1. Remove steam cylinder(s) from XT cabinet (if not already out).
2. Route fill cup extension kit hoses into cabinet through fill cup hole, and
fasten extension bracket as shown with two screws provided.
OM-7690
Cylinder fill hose connection
Drain cup plate
3. Route hoses along back of cabinet interior to provide clearance for
cylinder.
Fill cup
4. Cut supply water hose (small-diameter hose) (A) to length so it can attach
to fill valve adapter without kinking.
5. Expand spring clamp and slide it onto supply water hose (A) far enough
so it will not interfere, then push hose onto fill valve adapter. Expand and
slide spring clamp into place.
6. Cut cylinder fill hose (bottom, center hose) (B) to length so it can attach to
cylinder fill hose connection without kinking.
Supply water (A)
Overflow (C)
OM-7629
Cylinder fill (B)
mc_052312_1450
7. Expand spring clamp and slide it onto cylinder fill hose (B) far enough
so it will not interfere, then push hose onto cylinder fill hose connection.
Expand and slide spring clamp into place.
8. Cut overflow hose (C) to length so it can attach to overflow elbow
without kinking.
9. Push overflow hose onto overflow elbow. Spring clamp is not required on
this connection.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
11
INSTALLATION
Steam cylinder
INSTALLING STEAM CYLINDER
1. Make sure strainer is pressed into steam cylinder drain outlet and strainer
flange is flush with bottom of cylinder outlet. See Figure 12-1.
FIGURE 12-1: STEAM CYLINDER
INSTALLATION
2. Use water to lubricate drain outlet on bottom of cylinder and O-ring in
drain valve body. See Figure 12-1.
High water
sensor pin
Note: Because of tight clearances, perform Steps 3 through 7 only if servicing
Models XTS / XTP 002 through 017 with top-mounted steam blower. For
all other models, skip to Step 8.
3. Slide steam hose that connects to cylinder and steam blower up
until it is engaged on steam inlet of steam blower and tight against
bottom of steam blower.
OM-7632
4. Slide steam outlet of new cylinder all the way up into open end of
steam hose from Step 3.
Strainer
5. With Warning label on cylinder facing you, lower cylinder drain
outlet into drain valve body, and rotate cylinder so side tabs line
up with cylinder guides inside cabinet. Push down on cylinder until
drain outlet is fully seated in drain valve body.
6. Slide steam hose down so it is fully engaged on cylinder steam
outlet.
7. Re-install clamps on steam hose, and skip to Step 10.
8. With Warning label on cylinder facing you, lower cylinder drain outlet into
drain valve body, and rotate cylinder so side tabs line up with cylinder
guides inside cabinet. Push down on cylinder until drain outlet is fully
seated in drain valve body.
9. Connect steam hose to cylinder, and re-install hose clamp.
Warning
label
Cylinder
guide
Drain valve
body
10. Connect high water sensor (yellow) wire to single pin surrounded by
plastic shoulder on cylinder.
11. Connect electrode wires to pins on top of cylinder. Make sure all plugs fit
snugly and are fully engaged on pins.
Important: Three phase cylinders have color-coded dots on the cylinder
and color bands on the electrode plugs. When connecting the plugs, match
the band colors on the plugs with the dot colors on the cylinder. Refer to the
wiring diagram shipped with the humidifier if necessary.
CAUTION
If cylinder plugs become loose, damage to the humidifier may occur. Obtain
replacement plugs from DriSteem. See “Replacement parts” on Pages 61 and
63 for part numbers.
12
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-7675X
INSTALLATION
Piping: Supply water and drain
Important:
SUPPLY WATER PIPING
Use only copper for supply water piping; do not use rubber or plastic. The
standard supply water connection before the fill valve is a 1/4" FIP strainer.
Note: The supply water connection size is 3/8" BSP [DN10] in Europe.
Thoroughly flush supply
water piping to remove pipe residue and
stagnant water before connecting piping to
humidifier. Pipe residue and stagnant water
in water supply piping can cause foaming,
preventing humidifier from reaching required
steam capacity.
In cases where water hammer may be a possibility, consider installing a shock
arrestor. Water pressure must be 25 to 80 psi (175 to 550 kPa).
WARNING
DRAIN PIPING
Drain piping must be code-approved, 3/4" (DN 20) ID material rated for
212 °F (100 °C) minimum.
The drain cup has an integral grounding plate and requires a field-installed
1" (25 mm) air gap to a drain funnel to prevent conduction of electricity in the
drain line.
The XT Series humidifier features user-selectable drain water tempering.
When drain water tempering is selected, the humidifier tempers drain water
by opening the fill valve whenever the drain valve is energized, which
automatically cools drain water before it enters the drain. Drain water
tempering is intended to keep water entering the drain line no hotter than
140 °F (60 °C). Manually energizing the drain valve when the supply water is
shut off can allow 212 °F (100 °C) water to enter the drain line.
Hot drain pipes
Drain piping surface may be hot.
Touching or contact with hot pipe may
cause severe personal injury.
FIGURE 13-1: DRAIN PIPING DETAIL
Observe the following precautions when selecting and installing drain piping
to ensure personal safety and material integrity:
• When using copper or other metallic drain piping, ground the drain piping
to the earth ground lug in the XT Series humidifier.
OM-7591
1" (25 mm)
air gap
Open drain
• Chlorinated polyvinyl chloride (CPVC) piping is a non-metallic alternative
for drain piping. It is rated up to 212 °F (100 °C) for intermittent-use, lowpressure applications.
3/4" (DN20) I.D.
The connection size for the steam cylinder drain is 1" (DN25) hose. Do not
reduce this connection size. If drainage by gravity is not possible, use a
reservoir pump rated for 212 °F (100 °C) water.
Hose clamp*
Drain hose*
Pitch 1/8"/ft (1%)
toward drain
To drain
* Ship with humidifier, and can be ordered
from DriSteem. See Table 63-1.
mc_052312_1323
The open drain must be at least 12” (300 mm) below the bottom of the XT
humidifier, to prevent steam condensation on the humidifier. Use the 12”
(300 mm) drain hose provided and position above field-installed open drain.
Alternately, route drain line away from beneath humidifier to open drain. See
Figure 13-1.
AUTOMATIC DRAIN WATER TEMPERING
XT Series humidifiers are shipped with drain water tempering set to OFF. To
activate automatic drain water tempering:
Model XTS: See "Enabling automatic drain water tempering" on page 49.
Model XTP: See the Vapor-logic Installation and Operating Manual.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
13
INSTALLATION
Piping: Field piping overview
FIGURE 14-1: XT SERIES HUMIDIFIER FIELD PIPING OVERVIEW
Steam hose or tubing. DriSteem
recommends tubing for runs longer than
10' (3 m). See Table 27-1 for maximum
tubing lengths. Tubing must be grounded.
Hose and clamp
Install plumb
Fill valve with 1/4"
FIP strainer (3/8" BSP
[DN10] in Europe)
supply water connection
in
dra
d
r
a
tow
%)
1
(
t
f
8"/
1/
h
c
t
Pi
Metallic water
supply line
Floor
drain
Shock arrester (by
installer)recommended to
reduce water hammer
Open drains required directly below
humidifier drains to prevent downstream
drain line blockage from causing water to
back up into cylinder. Refer to governing
codes for drain pipe size and maximum
discharge water temperature. Install spill
funnels plumb to floor drain.
1¼" (DN32) drain piping after
second drain connection, or if piping
run is over 10’ (3 m)
3/4" (DN20) drain piping up to
second drain connection
3/8" (DN10) copper water supply line; water
pressure must be 25 to 80 psi (175 to 550 kPa).
Inlet strainer, by installer
OM-7666
Supply valve, by installer
Notes:
• Dashed lines indicate provided by installer.
• Two-cylinder model shown.
mc_051712_1217
14
1" (25 mm) air gap required to isolate
unit drain piping from sanitary drain
piping. Locate air gap only in spaces with
adequate temperature and air movement
to absorb flash steam, or condensing on
nearby surfaces could occur.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Piping: XT steam blowers
FIGURE 15-1: PIPING FROM XT SERIES HUMIDIFIER TO REMOTE XT STEAM BLOWER
Notes:
• Maximum recommended distance between humidifier
and XT steam blower is 10’ (3 m).
• Models XTS / XTP 042 and 048 are not intended for use
with a steam blower.
Hose clamp (provided)
Plastic tie
Steam hose
(purchased separately
from DriSteem)
Condensate hose (purchased
separately from DriSteem)
Hose clamp (provided)
7” (178 mm)
water seal
Plastic tie
OM-7681
To open drain or humidifier fill cup.
Water seal is required, whether condensate is piped to
open drain or returned to humidifier fill cup.
Hose clamps
(provided)
Steam hose
(purchased separately from DriSteem)
Plastic tie
Stainless steel Y connector*
Condensate hose
(purchased separately
from DriSteem)
Hose clamp*
Steam hose*
7” (178 mm)
water seal
Hose clamp*
* Provided in optional connector
kit Part No. 191070-102
Plastic tie
OM-7604X
Model XTS / XTP 025 only
To open drain or humidifier fill cup.
Water seal is required, whether
condensate is piped to open drain
or returned to humidifier fill cup.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
15
INSTALLATION
Piping: XT steam blowers
FIGURE 16-1: PIPING FROM XT SERIES HUMIDIFIER TO TOP-MOUNTED XT STEAM
BLOWER
Hose clamp (provided)
Steam hose (provided)
Hose clamp (provided)
OM-7682
Notes:
• Maximum recommended distance between humidifier and XT steam blower is 10’ (3 m).
• Models XTS / XTP 025 and 033 are not intended for use with a direct-mounted steam blower.
• Model XTS / XTP 042 and 048 are not intended for use with a steam blower.
16
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Humidifier wiring
All wiring must be code approved and in accordance with the unit wiring
diagram. Power supply wiring must be rated for 105 °C. See Figure 17-1 for
the humidifier wiring diagram locations.
When selecting a location for installing the humidifier:
• Avoid areas close to sources of electromagnetic emissions such as power
distribution transformers.
• Do not loop power wiring.
• Do not use aluminum wire.
WARNING
Electric shock hazard
Only qualified electrical personnel
should perform field wiring installation
procedures. Improper wiring or contact
with energized circuits may cause
property damage, severe personal
injury, or death as a result of electric
shock and/or fire.
CONDUIT KNOCKOUTS
Conduit and control wiring knockouts are provided on the XT Series humidifier
cabinet. See Figure 5-1.
CONTROL COMPONENT PLACEMENT
Follow the guidelines on Page 20 for placing humidistats, transmitters, and
airflow proving switches.
CAUTION
FIGURE 17-1: FIELD WIRING
REQUIREMENTS
Wiring
diagram
inside of
humidifier
cabinet
Adding conduit connections not recommended
Adding alternate conduit connections is not recommended. If you must make
additional holes in the humidifier cabinet, protect all internal components from
debris, and vacuum out the cabinet when finished. Failure to follow these precautions
can damage sensitive electronic components and void the DriSteem warranty.
Power supply
Fused disconnect
OM-7692
XT Series humidifier
Notes:
• Control wiring and power wiring must be
run in dedicated or separate earthed metal
conduit, cable trays, or trunking.
• Separate the line voltage wiring from low
voltage control circuit wiring when routing
electrical wiring inside the humidifier
cabinet.
• Do not use chassis or safety grounds as
current-carrying commons. Never use a
safety ground as a conductor or neutral to
return circuit current.
• For circuit protection requirements, see
recommended fusing in Table 4-1.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
17
INSTALLATION
Humidifier wiring
CONNECTION INSTRUCTIONS
Before connecting power, refer to the wiring diagram or the data plate on the
outside of the cabinet for wire sizing amperage.
For control signal wiring from a humidistat, transmitter, or signal by others, see
the wiring diagrams shipped inside the humidifier.
MODEL XTP:
See “Step 1 – Field wiring” in the Vapor-logic Installation and Operation
Manual for detailed instructions on the following:
• Control input wiring:
See the “Control input” section.
• Duct airflow proving switch and duct high limit humidistat wiring
(recommended optional devices):
See the following sections:
“Airflow proving switch” and
“Duct high limit switch or transmitter”
• Remote signal wiring:
See the following sections:
“Programmable triac” and
“Programmable relay (dry contact)”
MODEL XTS:
See the external control connections and dip switch settings diagram inside the
cabinet door.
EARTH GROUNDING REQUIREMENTS
A code-approved safety earth grounding system is required. The ground
connection must be made with solid metal-to-metal connections. Ground wire
should be the same size as power wiring.
WARNING
Excessive moisture hazard
DriSteem strongly recommends
installing a duct airflow proving switch
and a duct high limit humidistat. These
devices prevent a humidifier from
making steam when there is low airflow
in the duct or when the RH level in the
duct is too high. Failure to install these
devices can result in excessive moisture
in the duct, which can cause bacteria
and mold growth or dripping through
the duct.
mc_060310_0725
Proper wiring prevents electrical noise.
Electrical noise can produce undesirable effects
on electronic control circuits, which affects
controllability. Electrical noise is generated
by electrical equipment, such as: inductive
loads, electric motors, solenoid coils, welding
machinery, or fluorescent light circuits. The
electrical noise or interference generated from
these sources (and the effect on controllers)
is difficult to define, but the most common
symptoms are erratic control or intermittent
operational problems.
Important:
• For maximum EMC effectiveness, wire all
humidity, high limit, and airflow controls
using multicolored shielded/screened
plenum-rated cable with a drain wire for
the shield/screen. Connect the drain wire
to the shield/screen ground terminal with
wire less than 2" (50 mm) in length.
• Do not ground shield at the device end.
18
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Sensor placement
SENSOR LOCATION IS CRITICAL
Other factors affecting humidity control
Sensor location has a significant impact on humidifier performance. See the
recommendations below and Figure 21-1.
Humidity control involves more than the
controller’s ability to control the system. Other
factors that play an important role in overall
system control are:
• Size of humidification system relative to
load
Note: DriSteem recommends that you do not interchange room and duct
humidity devices. Room humidity devices are calibrated with zero or little
airflow, whereas duct humidity devices require air passing across them.
• Overall system dynamics associated with
moisture migration time lags
Recommended humidity control (transmitter/humidistat) locations:
• Accuracy of humidistats and humidity
transmitters and their location
A. Ideal. Ensures the best uniform mix of dry and moist air with stable
temperature control.
• Dry bulb temperature accuracy in space
or duct
B. Acceptable, but room environment can affect controllability, such as when
sensor is too close to air grilles, registers, or heat radiation from room
lighting.
• Velocities and airflow patterns in ducts
and space environments
• Electrical noise or interference
mc_072011_1656
C. Acceptable. Provides uniform mixture of dry and moist air. If extended time
lag exists between humidity generation and sensing, extend sampling time.
D. Acceptable (behind wall or partition) for sampling entire room if sensor is
near an air exhaust return outlet. Typical placement for sampling a critical
area.
E. Not acceptable. These locations might not represent actual overall
conditions in the space.
F. Not acceptable. Do not place sensors near windows, door passageways,
or areas of stagnant airflow.
Recommended safety (airflow and high limit) sensor location:
G. Best sensing location for high limit humidistat or humidity sensor and airflow
proving switch.
mc_072011_1655
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
19
INSTALLATION
Sensor placement
FIGURE 20-1: RECOMMENDED SENSOR LOCATIONS
8' to 12'
(2.4 m to 3.7 m)
min.
Outside air
Damper control
Relief air
Return air
sC
Window
Air handling
unit
sG
High limit humidistat or high limit transmitter
(set at 90% RH maximum) for VAV applications
Airflow switch or differential pressure
switch (sail type recommended for VAV
applications)
Vapor absorption has taken place
Wall or partition
Point of vapor absorption
sD
sE
E
s
Humidifier dispersion assembly
Turning vanes
sB
As
F
E
s
Doorway
20
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
F
DC-1084
mc_060508_0750-XT
Window
INSTALLATION
Dispersion: Selecting the dispersion assembly location
DriSteem humidifiers operate with several types of dispersion assemblies for
open spaces and for ducts and air handling units.
Dispersion assemblies in ducts and air handling units must be positioned where
the water vapor being discharged is carried off with the airstream and is
absorbed before it can cause condensation or dripping.
• 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.
WARNING
Hot surface and steam hazard
Dispersion assembly and steam hose or
tubing can contain steam, and surfaces
can be hot. Discharged steam is not
visible. Contact with hot surfaces or air
into which steam has been discharged
can cause severe personal injury.
mc_060110_1555
• In general, the dispersion assembly is best placed where the air can absorb
the moisture being added without causing condensation at or after the unit.
This normally will be after the heating coil or where the air temperature is
highest.
• Place the dispersion assembly such that absorption will occur:
– before the intake of a high efficiency filter, because the filter can remove
the visible moisture and become waterlogged;
– before coming in contact with any metal surface;
– before fire or smoke detection devices;
– before a split in the duct; otherwise, the dispersion assembly can direct
more moisture into one duct than the other.
• When draining dispersion condensate to an open drain, provide a 1"
(25 mm) air gap between the condensate drain piping and the drain.
Locate the gap only in spaces with adequate temperature and air movement
to absorb flash steam; otherwise, condensation may form on nearby
surfaces.
mc_060210_0838
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
21
INSTALLATION
Dispersion: Returning condensate to steam cylinder
CONDENSATE RETURN GUIDELINES
XT Series humidifier steam outlet
To prevent overfilling the steam cylinder, follow the condensate guidelines
below:
The steam outlet on the humidifier is sized
to the output of the humidifier. DO NOT use
interconnecting steam hose or tubing with an
inside diameter smaller than the humidifier
steam outlet. Reducing the inside diameter will
result in the internal humidifier system pressure
exceeding the parameters for acceptable
performance.
• See maximum system pressure in Table
26-1.
• When condensate can be returned to the steam cylinder:
– Single dispersion tube
– Up to 20 lbs/hr (9.1 kg/h) of steam production
– 10' (3 m) or less of steam hose between humidifier and dispersion
– 20' (6 m) or less of tubing between humidifier and dispersion
• When condensate should be wasted to the drain:
– Ultra-sorb or Rapid-sorb dispersion
– Single dispersion tube with condensate drain
– Single dispersion tube with:
22
-
More than 20 lbs/hr (9.1 kg/h) or more of steam production, or
-
More than 10' (3 m) of steam hose between humidifier and
dispersion
-
More than 20' (6 m) of tubing between humidifier and dispersion
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
• See maximum steam carrying capacities in
Table 27-1.
• If the humidifier must be located higher
than the dispersion assembly, use the
recommended installation shown in Figure
31-1.
INSTALLATION
Dispersion:
Steam outlet connections
FIGURE 23-1: STEAM OUTLET CONNECTIONS, MODELS XTS / XTP 002 THROUGH 025
Steam outlet connections to steam hose
(Models XTS / XTP 002 through 006)
To dispersion assembly
Steam outlet connections to tubing
(Models XTS / XTP 010 through 025)
To dispersion assembly
1½” (DN40) steam hose
1” (DN25) steam hose,
12" (305 mm) long
(optional)*
Connector (optional)*
See Caution below
1½” (DN40) tubing
(must be grounded)
Hose clamp
Hose clamp
(optional)*
1½” (DN40) I.D.
steam hose, 12"
(305 mm) long
Hose clamp
OM-7674
OM-7675
* Provided in optional connector kit Part No. 191070-100 (see Table 65-1)
CAUTION
Connector kit location
Install the connector for increasing from 1” to 1½” (DN25 to DN40) hose or tube immediately above the XT Series humidifier as
shown above.
Failure to install the connector kit immediately above the humidifier will cause system pressure fluctuations and increase cylinder
pressure, steam velocity, and condensate noise.
mc_022111_1600
mc_051712_1035
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
23
INSTALLATION
Dispersion: Steam outlet connections with hose
FIGURE 24-1: STEAM OUTLET CONNECTIONS WITH HOSE, MODELS XTS / XTP 033 THROUGH XTP096 WITHIN 10' (3 M) OF
DISPERSION ASSEMBLY
WARNING
Preventing back pressure/abnormal operation in dual cylinder humidifiers and installations where two individual units are
connected to a single dispersion panel.
Read and follow all steam hose installation instructions. Failure to follow these instructions could result in excessive back pressure or
abnormal operation of the unit. Severe personal injury or damage to the unit may result.
Models XTS / XTP 033, 042, and 048
To dispersion assembly
2" (DN50)
steam hose,
10' (3 m)
maximum
Stainless steel Y connector*
Hose clamp*
Notes:
•
For horizontal runs longer than 5' (1.5 m) or vertical runs long than
10' (3m), tubing is required (see Figure 35-1). Do not use steam hose.
•
See Table 63-1 for optional kits listed below.
*
Provided in optional connector kit Part No. 191070-101
** Provided in optional connector kit Part No. 191070-002
*** Provided in optional connector kit Part No. 162825-202F
1½" (DN40) steam hose*,
12" (305 mm) long
Model XTP050
Stainless steel tube connector** (see below)
Hose clamp**
OM-7676
Steam hose** attaches directly to
dispersion, 2" (DN50) on Ultra-sorb and
Rapid-sorb (see below)
1½" (DN40) steam hose. Each cylinder
to connect to dispersion separately. For
distance greater than 10', use hard pipe.
Models XTP 067 through 096
3" (DN80) flange connection***
attaches directly to dispersion
(see right)
2" (DN50) steam hose. Each cylinder
to connect to dispersion separately. For
distance greater than 10', use hard pipe.
Stainless steel Y connector*
Hose clamp*
1½" (DN40) steam hose*,
12" (305 mm) long
OM-7679
mc_050812_1725
24
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-7677
INSTALLATION
Dispersion: Steam outlet connections with hose
FIGURE 25-1: CONNECTING TWO CYLINDERS TO A DISPERSION ASSEMBLY
WARNING
2" (DN50) steam hose connection
OM-7913
1½" (DN40) hose connections
from two cylinders
Preventing back pressure/abnormal
operation in dual cylinder humidifiers
and installations where two individual
units are connected to a single
dispersion panel.
Read and follow all steam hose
installation instructions. Failure to
follow these instructions could result in
excessive back pressure or abnormal
operation of the unit. Severe personal
injury or damage to the unit may result.
3" (DN80) flange connection
2" (DN50) hose connections
from two cylinders
OM-7914
Notes:
•
For two cylinders, connect the stainless steel tube connector directly to the dispersion inlet as shown.
The diameter and pitch of the tube connector must match the inlet diameter and pitch of the dispersion unit.
•
Always run separate steam tubing from each cylinder to the connection of the dispersion device.
Only connect a maximum of two cylinders to any single dispersion unit.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
25
INSTALLATION
Dispersion: Interconnecting piping requirements
Table 26-1:
Insulated 1½" (DN40) steam tubing maximum lengths for Models XTS / XTP
002 through 017
Model
Maximum developed length*
XTS / XTP
ft
m
002
13
4.0
003
25
7.6
006
50
15.2
010**
50
15.2
017**
50
15.2
Notes:
• For larger XT Series humidifier models, see Table 27-1.
• Values in this table are based on condensate flowing with steam (steam tubing pitched
toward dispersion device).
* Maximum developed lengths are based on 5% steam loss in tubing. Developed length equals
measured length plus 50% of measured length to account for fittings.
** Values in this table are based on duct static pressure of 2" wc (498 Pa). If maximum
developed length is more than 20' (6 m) and duct static pressure exceeds 2" wc (498 Pa), a
fill cup extension kit (Figure 11-1) is required.
26
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Condensate control and collection
Controlling condensate flow and collection
in an XT Series humidifier system is critical
to performance. To maximize humidifier
performance:
• See Tables 26-1 and 27-1.
• Follow all installation recommendations
for your specific humidifier and
dispersion assembly from here through
Page 44.
INSTALLATION
Dispersion: Interconnecting piping requirements
Table 27-1:
Maximum steam carrying capacity and length of interconnecting steam hose and tubing for Models XTS / XTP 025
through XTP096
Copper or stainless steel tubing
(Insulate tubing to minimize loss of capacity and efficiency.)
DriSteem steam hose*
Model
Hose I.D.
Maximum capacity
per cylinder†
Maximum
length ††
Tube size
Maximum capacity
per cylinder†
Maximum
developed length†††
XTS / XTP
inches
DN
lbs/hr
kg/h
ft
m
inches
DN
lbs/hr
kg/h
ft
m
025,
050**
1½
40
75
34.0
10
3
1½
40
75
34.0
100
30
033,
067**
2
50
100
45.4
10
3
2
50
100
45.4
100
30
042,
083**
2
50
125
56.7
10
3
2
50
125
56.7
100
30
048,
096**
2
50
143
65.0
10
3
2
50
143
65.0
100
30
Notes:
• See Table 26-1 for XT Series humidifiers with lower capacities using 1½" (DN40) steam tubing.
• Values in this table are based on XT Series humidifiers with fill cup extensions, and condensate flowing in direction of steam (steam hose or
tubing pitched toward dispersion device).
* When using steam hose, use DriSteem steam hose for best results. Field-supplied hose may have shorter life and may cause foaming in cylinder,
resulting in condensate discharge at dispersion assembly. Do not use steam hose for outdoor applications.
** Model XTP only. These models have two steam cylinders.
†
For Models XTS / XTP 050 through XTP096, capacities listed are maximum steam carrying capacity per tube attached to each cylinder, with
separate steam tubing from each cylinder to connection on dispersion device. See Figure 24-1.
††
DriSteem typically recommends 10' (3 m) maximum steam hose length pitched at 2"/ft (15%). Steam hose tends to sag if not supported for its full
length. Sagging leads to collecting condensate and system pressure issues. Tubing is less prone to sagging and can allow for 1/8"/ft (1%) pitch
minimum and longer runs.
†††
Developed length equals measured length plus 50% of measured length to account for fittings.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
27
INSTALLATION
Dispersion: Interconnecting piping requirements
CONNECTING TO HUMIDIFIER WITH STEAM HOSE
For tubing connections, see “Connecting to
humidifier with tubing” on Page 32.
• Support steam hose for its full length to prevent sags, or low spots:
– For single dispersion tube without condensate drain, maintain a
minimum pitch of 2"/ft (15%) toward the steam cylinder.
– For dispersion devices with condensate drain, maintain a minimum pitch
of 2"/ft (15%) toward the dispersion device.
• Use DriSteem steam hose. Other manufacturers of steam hose may use
unacceptable release agents or material mixes that can affect humidifier
system performance adversely. Using hose from alternative manufacturers
increases the possibility of foaming in the cylinder and accelerated steam
hose aging. Foaming causes condensate discharge at the dispersion
assembly.
Important:
Steam hose must be supported for its full length
to prevent sagging or low spots.
• Do not use steam hose in outdoor applications.
• Do not insulate steam hose. Insulation causes accelerated heat aging,
causing the steam hose to become hard and susceptible to failure due to
cracks.
• For single dispersion tube applications, see hose kit sizes in Table 30-1.
Table 28-1:
Steam loss of interconnecting steam hose and tubing
Steam loss
Description
Nominal hose or tubing size
Noninsulated
Insulation thickness
Insulated
inches
DN
lbs/hr/ft
kg/h/m
lbs/hr/ft
kg/h/m
inches
mm
1½
40
0.15
0.22
N/A
N/A
N/A
N/A
2
50
0.20
0.30
N/A
N/A
N/A
N/A
1½
40
0.11
0.164
0.02
0.03
2
50
2
50
0.14
0.21
0.025
0.037
2
50
Steam hose
Tubing
Note: These data are based on an ambient air temperature of 80 °F (27 °C), fiberglass insulation, and copper tubing.
28
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion: Single dispersion tube
Important:
DISPERSION TUBE WITH OR WITHOUT CONDENSATE DRAIN
• Use a hose cuff and clamps to connect the steam outlet to tubing.
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
• Tubing diameter must match XT steam outlet connection.
• See maximum steam carrying capacities in Table 26-1 and steam loss in
Table 28-1.
• If mounting the humidifier above the level of dispersion tube, see "Drip tee
installation" on Page 31. See also "Vertical riser drip details" in Figure
32-1.
mc_060210_0843
DISPERSION TUBE WITHOUT CONDENSATE DRAIN,
MODELS XTS / XTP 002 THROUGH 006
CAUTION
• See Figure 29-1.
Connector kit location
Install the connector for increasing from
1” to 1½” (DN25 to DN40) hose or
tube immediately above the XT Series
humidifier as shown below.
• Maximum capacity of 1½" (DN40) dispersion tube without condensate
drain is 29 lbs/hr (13.2 kg/h) insulated; 28 lbs/hr (12.7 kg/h)
uninsulated.
• Condensate can flow back to the cylinder against 20 lbs/hr (9.1 kg/h)
steam flow. Pitch the steam supply line back toward the humidifier (see
Figure 29-1).
Failure to install the connector kit
immediately above the humidifier will
cause system pressure fluctuations
and increase cylinder pressure, steam
velocity, and condensate noise.
mc_022111_1600
FIGURE 29-1: SINGLE DISPERSION TUBE WITHOUT CONDENSATE DRAIN, MODELS XTS / XTP 002 THROUGH 006 ONLY
Tubing must be grounded. Insulate
tubing to reduce steam loss. See Table
26-1 for maximum tubing lengths.
Single dispersion tube
without condensate drain
Duct
4.5" (115 mm) minimum from top
of duct
Pitch*
See first bullet in
installation notes above.
Pitch 2"/ft (15%)
Optional connector
(see Caution above)
* Pitch steam hose
or tubing toward
humidifier:
• 2"/ft (15%) when
using steam hose
• ½"/ft (5%) when
using 1½" tubing
• ¼"/ft (2%) when
using 2" tubing
Secure and seal
escutcheon plates.
90° long sweep or
two 45° elbows
OM-7693
Mounting nut, 3/8" - 16 (M10)
Dispersion tube: Orient with tubelets
(steam orifices) pointing up.
Dispersion tube escutcheon plate
A
XT Series humidifier
A
Note: Dashed lines indicate provided by installer.
OM-351-1
Dimension A: 3.25" (82.5 mm) for 1½" tubes
mc_052312_1336
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
29
INSTALLATION
Dispersion: Single dispersion tube
DISPERSION TUBE WITH CONDENSATE DRAIN,
MODELS XTS / XTP 010 AND 017
Table 30-1:
Hose kit sizing by capacity
• See Figure 30-1.
• Models XTS / XTP 010 through XTP096 have
capacities requiring dispersion devices with
condensate drains. DriSteem recommends pitching
steam tubing for these models towards the dispersion
device. For XT Series humidifiers with capacities
more than 20 lbs/hr (9.1 kg/h), the installer should
not attempt to drain condensate back to the cylinder.
When a vertical riser is required in the steam tubing, a
drip tee is required in order to eliminate a condensate
collection point that will restrict steam flow. See vertical
riser examples in Figure 32-1.
• If maximum developed length is more than 20' (6 m)
and duct static pressure exceeds 2" wc (498 Pa), a fill
cup extension kit (Figure 11-1) is required.
Maximum
tube capacity
Hose kit
(steam hose,
dispersion tube,
and hardware)
• Maximum capacity of 1½" (DN40) dispersion tube
with condensate drain is 65 lbs/hr (29.5 kg/h)
insulated; 62 lbs/hr (28.1 kg/h) uninsulated.
Insulated
Uninsulated
lbs/hr
kg/h
lbs/hr
kg/h
1½" (DN40) without drain
29.0
13.2
28.0
12.7
1½" (DN40) with drain
65.0
29.5
62.0
28.1
These capacities require
multiple tube assemblies
and cannot use a single
hose kit.
>65.0
>29.5
>62.0
>28.1
Capacities of Models XTS / XTP 025 through XTP096 require multiple
tube assemblies and cannot use a hose kit. For multiple tube assemblies,
see “Rapid-sorb” beginning on Page 33.
FIGURE 30-1: SINGLE DISPERSION TUBE WITH CONDENSATE DRAIN, MODELS XTS / XTP 002 THROUGH 017 ONLY
Tubing must be grounded. Insulate
tubing to reduce steam loss. See Table
26-1 for maximum tubing lengths.
Secure and seal
escutcheon plates
Single dispersion tube with condensate drain;
orient dispersion tube with tubelets (steam
orifices) pointing up.
Duct
Pitch tube toward drain 1/8"/ft (1%).
Mounting nut, 3/8"–16 (M10)
Pitch*
90° long sweep or two
45° elbows
6" (150 mm)
recommended
4.5" (115 mm) minimum from bottom
of duct
1/4" NPT (DN8)
Water seal
5" (125 mm)
1/2" O.D. (DN15) condensate drain tube.
Pitch 1/4”/ft (2%) toward escutcheon plate.
3/4" (DN20) (minimum) condensate drain tube by installer. Must
be suitable for 212 °F (100 °C) water.
1" (25 mm)
air gap
XT Series humidifier
OM-7694
* Pitch steam hose or tubing toward humidifier:
• 2"/ft (15%) when using steam hose
• 1/8"/ft (1%) when using tubing
Open drain required. 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.
Escutcheon plates
Dispersion tube
Condensate drain
A
Note: Dashed lines indicate provided by installer.
A
mc_052312_1335
A
OM-351-1
A
Dimension A: 3.25" (82.5 mm) for 1½" tubes
30
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion: Drip tee installation
Install a drip tee as shown below when the humidifier is mounted higher than
the dispersion assembly, when interconnecting hose or tubing needs to go over
an obstruction, or when interconnecting piping runs are long.
FIGURE 31-1: DRIP TEE INSTALLATION
90° long sweep or two 45° elbows
Pitch
Obstruction
Insulate tubing to reduce steam loss
XT Series humidifier
OM-7695
To dispersion assembly
6" (150 mm) recommended
8" (200 mm) minimum
Tubing drip tee, by installer (see Part No. in
Table 63-1)
3/4" (DN20)
1" (25 mm) air gap
Open funnel or floor drain. See first note below.
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.
• Support steam hose for its full length so there are no sags or low spots.
• Dashed lines indicate provided by installer.
mc_062810_0645-XT
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
31
INSTALLATION
Dispersion: Connecting to humidifier with tubing
See Figures 29-1 and 30-1 for interconnecting tubing pitch requirements
for single dispersion tube applications. See Table 34-3 for interconnecting
tubing pitch requirements for Rapid-sorb applications.
• Support tubing between the humidifier steam outlet and the dispersion
system with pipe hangers. Failure to properly support the entire tubing
weight may cause damage to the humidifier tank and void the warranty.
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
• Ground metal steam tubing. See “Grounding steam tubing” at right.
• 90° elbows are not recommended. DriSteem recommends 90° long
sweeps. Two 45° elbows, 1' (0.3 m) apart may also be used.
Grounding steam tubing
• Insulating tubing reduces the loss in output caused by condensation.
• If flux or any other surface preparation material is used when connecting
steam tubing and fittings, drain and fill the steam cylinder two times after
the first half hour of steam production:
– Model XTP, step 5 on page 48
– Model XTS, step 3 on page 49
The XT Series humidifier has built-in functionality
for detecting and eliminating foaming in
the steam cylinder. However, because brief
periods of foaming are possible, grounding
metal steam tubing back to the humidifier earth
ground lug is necessary. This earth ground
will prevent foam from creating an electrically
conductive path from the electrically charged
cylinder water to the metal steam tubing.
This will minimize the possibility of foaming in the steam cylinder.
FIGURE 32-1: DETAIL OF VERTICAL RISER DRIPS
90° long sweep or two 45° elbows
Pitch
To dispersion assembly
Insulate tubing to reduce steam loss
Pitch
3/4" (DN20)
Tubing drip tee
6" (150 mm)
recommended
8" (200 mm) recommended
XT Series humidifier
1" (25 mm)
air gap
OM-7680
32
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Open funnel or floor drain
INSTALLATION
Dispersion: Rapid-sorb
Read all dispersion instructions in this manual, and follow the installation
instructions below:
• Unpack shipment and verify receipt of all Rapid-sorb® components
with packing list. Report any shortages to DriSteem immediately. The
components typically include the following:
– Multiple dispersion tubes
– Header
– 3/4" × 2" (19 mm × 51 mm) L-bracket
WARNING
Hot surface and steam hazard
Dispersion assembly and steam hose or
tubing can contain steam, and surfaces
can be hot. Discharged steam is not
visible. Contact with hot surfaces or air
into which steam has been discharged
can cause severe personal injury.
mc_060110_1555
Note: Dispersion tubes, header, and L-bracket are each tagged with the
customer requested identification number.
– A single duct escutcheon plate the size of the header
– Slip couplings or hose cuffs and clamps
Important:
– Accessories such as duct plates, slip couplings, or hose cuffs
Before marking and drilling holes in the duct
or air handler, refer to ALL pitch requirements
for the Rapid-sorb assembly you received (see
Table 33-1). The size, quantity, and location of
penetrations are determined by the dimensions
and configuration of the Rapid-sorb assembly
you received.
– Bolts and washers for mounting the dispersion tubes to the bracket
• L-bracket mounting holes (see note at left):
– L-bracket 50" (1270 mm) long or shorter has a mounting hole 4" (100
mm) from each end for mounting the L-bracket to the duct or air handler
wall.
mc_060210_0937
– L-bracket longer than 50" (1270 mm) has an additional mounting hole
in the center.
Note: Hardware for mounting the L-bracket to the duct or air handler
wall and the hardware for the header support bracket is not
provided.
• Select an installation location that provides necessary access in and around
the ductwork or air handler.
• The Rapid-sorb typically is installed centered side to side in a duct, or is
installed across the face of a coil in an air handler.
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
• The center line of the outer dispersion tubes should never be closer than
4.5" (114 mm) from the side of the ductwork or air handler wall.
• The following instructions are for a typical Rapid-sorb installation —
horizontal-airflow duct with Rapid-sorb header either inside or outside
the duct. See the DriCalc Installation Guides library or contact your
representative/distributor or DriSteem for installation instructions for air
handler or vertical airflow applications.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
33
INSTALLATION
Dispersion: Rapid-sorb
PITCH REQUIREMENTS
• For Rapid-sorb with the header outside a horizontalairflow duct, consider the following:
Table 34-1:
Rapid-sorb dispersion tube capacities*
Tube capacity
– 1½" (DN40) dispersion tubes: Use a fastener of
sufficient length to accommodate the 1/8"/ft (1%)
pitch requirement toward the 3/4" pipe thread
(DN20) header drain fitting.
– 2" (DN50) dispersion tubes: Bracket can be
mounted flush to ductwork. Typically, the 1/8"/ft
(1%) pitch can be accomplished in the length of the
hose cuffs used to connect tubes to header.
• See Table 34-3 and the drawings on the following
pages for pitch requirements.
Tube
diameter
Insulated
(High-Efficiency Tubes)
Uninsulated
inches
DN
lbs/hr
kg/h
lbs/hr
kg/h
1½
40
43.0
19.5
40.0
18.2
2
50
80.0
36.4
77.0
35.0
* Capacities shown are for horizontal airflow.
See DriCalc for vertical airflow capacities. If face height is
<22" (559 mm), tube quantity per panel may need to increase to
compensate for reduced capacity of short tubes. Consult DriSteem or
see DriCalc for the correct calculation.
Table 34-2:
Rapid-sorb header capacities
Header capacity
Header diameter
lbs/hr
kg/h
inches
DN
≤ 250
≤ 113
2
50
251-500
114-227
3
80
501-800
228-363
4
100
801-1300
364-591
5
125
1301-2100
592-955
6
150
Table 34-3:
Pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb evaporative dispersion units
Airflow
Type of
interconnecting piping
Diameter of
interconnecting piping
Pitch of
interconnecting piping
Steam hose
1½" (DN40)
2" (DN50)
2"/ft (15%)
toward Rapid-sorb
Tubing
1½" (DN40)
2" (DN50)
1/8"/ft (1%)
toward Rapid-sorb
Steam hose
1½" (DN40)
2" (DN50)
2”/ft (15%)
toward Rapid-sorb
Tubing
1½" (DN40)
2" (DN50)
1/8”/ft (1%)
toward Rapid-sorb
Horizontal
Vertical
34
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Pitch of
dispersion tubes
Pitch of
header
Vertically
plumb
1/8”/ft (1%)
toward
condensate
drain
2"/ft (15%)
toward
header
1/8”/ft (1%)
toward
condensate
drain
INSTALLATION
Dispersion: Rapid-sorb with Models XTS / XTP 025 through 048
FIGURE 35-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER INSIDE THE DUCT
L-bracket. Install with flange facing upstream direction of airflow.
Drawing shows L-bracket correctly positioned for airflow.
Dispersion tube. Orient with tubelets perpendicular to airflow.
Air
90° long sweep
or two 45° elbows
Tubing must be grounded.
Insulate tubing to reduce
steam loss. See Tables
26-1 and 27-2 for
maximum tubing lengths.
See Note 1.
XT Series humidifier
Slip coupling or hose cuff
Duct
• 2"/ft (15%) when using steam hose
• ¼"/ft (2%) when using 2" tubing
Secure and seal
escutcheon plates.
Header pitch:
1/8"/ft (1%)
minimum
OM-7696
mc_052312_1451
Condensate drain:
3/4" pipe thread (DN20)
3/4" (DN20) copper
w
flo
Support bracket has
0.421" (11 mm)
mounting holes at top,
bottom, and end)
6" (150 mm)
recommended
1" (25 mm) air gap
5" (125 mm) recommended
Open drain required:
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.
Notes:
1. Use a hose cuff and clamps to connect steam outlet to tubing.
2. See installation procedure on Page 37.
3. Dashed lines indicate provided by installer.
WARNING
Hot surface and steam hazard
Dispersion assembly and steam hose or tubing can contain steam, and surfaces can be hot. Discharged steam is not visible.
Contact with hot surfaces or air into which steam has been discharged can cause severe personal injury.
mc_060110_1555
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
35
INSTALLATION
Dispersion:
Rapid-sorb and Ultra-sorb with Models XTP 050 through 096
Models XTS / XTP 050 through XTP 096 have capacities requiring dispersion devices with condensate drains (Figure
35-1). For these models, DriSteem recommends the following:
• Run separate steam tubing from each cylinder to the connection on the dispersion device.
• Pitch steam tubing toward the dispersion device.
The installer should not attempt to drain condensate back to the cylinder. When a vertical riser is required in the steam
tubing, a drip tee is required in order to eliminate a condensate collection point that will restrict steam flow.
FIGURE 36-1: DUAL-CYLINDER XT SERIES HUMIDIFIER CONNECTED TO RAPID-SORB OR ULTRA-SORB WITH RISER DRIPS IN
STEAM SUPPLY LINES
Rapid-sorb steam dispersion panel
WARNING
Preventing back pressure in dual-cylinder humidifiers
Read and follow all steam tubing installation instructions
for dual-cylinder humidifiers. Failure to follow these
instructions could result in excessive back pressure and
the risk of equipment damage or severe personal injury.
Pitch*
Pitch*
Pitch*
Drain
Pitch*
Drip tee
Ultra-sorb steam dispersion panel
Drain
OM-7678
mc_051712_1105
Dual-cylinder XT Series humidifier
Drain
Notes:
* Pitch 1/8"/ft (1%) minimum toward dispersion panel.
• See installation notes in Figure 25-1.
36
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion: Rapid-sorb
WITH HEADER INSIDE OF DUCT FOR HORIZONTAL AIRFLOW
Note: See the instructions at left for installing Rapid-sorb with the header
outside the duct for horizontal airflow.
1. Mark and cut holes in ductwork or air handler for steam header
penetration, condensate drain piping, and header support bracket fastener.
Allow 1/8"/ft (1%) header pitch toward the support bracket when you drill
the hole for the header support bracket fastener.
2. Loosely fasten the header in place.
3. Rotate the header 90° so the header stubs point horizontally in the duct.
When installing in an air handler, the rotation of the header is often less
than 90°. Typically, due to the condensate drain piping requirements, the
header can be set on the floor of the air handler, assembled in the vertical
position, and then raised and mounted in place.
CAUTION
Operate Rapid-sorb within rated steam
capacity
Excessive steam flow to the Rapid-sorb
steam dispersion assembly can
cause condensate to exit the tubelets,
which can cause water damage and
standing water in the duct or air
handler.
To avoid condensate exiting the
tubelets, do not operate the Rapid-sorb
beyond its rated capacity.
mc_072010_0930
4. Mount the dispersion tubes on the header with the slip couplings or hose
cuffs:
With header outside of duct for horizontal
airflow
• When installing slip couplings for 1½" (DN40) dispersion tubes, take
care not to shear O-rings.
1. Mark and cut holes in the ductwork for the
dispersion tubes. Use the L-bracket as a
template to mark the holes on the duct floor.
2. Temporarily, loosely suspend or support the
header below the final location. Vertical
balance point of the dispersion tube length
dictates where the header should be
suspended or temporarily supported.
3. Continue with Step 4 at right.
• Set slip coupling on header stub or dispersion tube so O-ring is resting
on face of tubing.
• Rotate slip coupling while pushing it onto the tubing.
• O-rings are lubricated at factory. If additional lubrication is necessary,
DO NOT use petroleum-based lubricant.
5. Allow the dispersion tubes to rest against the bottom of the duct.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
37
INSTALLATION
Dispersion: Rapid-sorb
6. Position the flange of the L-bracket so it is upstream of the tubes when the
assembly is rotated into position. Fasten the L-bracket to the end of the
dispersion tubes with the provided bolt, lock washer, and flat washer.
7. Rotate the assembly up until the L-bracket aligns with the mounting holes in
the duct or air handler.
• For 1½" (DN40) dispersion tubes:
– Header pitch is duplicated in the L-bracket.
– Dispersion tube and slip coupling must be fully engaged on header
stub for O-rings to provide a seal.
– High end of L-bracket can be fastened tight to duct or air handler.
– Fastener on low end of L-bracket must be long enough to compensate
for pitch. Use a nut on both sides of L-bracket and duct or air handler
for stability.
• 2" (DN50) dispersion tubes
– Fasten bracket to top of duct and use hose cuffs to compensate for
header pitch.
– Before securing hose cuffs with hose clamps on dispersion tube
and header stub, verify that dispersion tube orifices are directed
perpendicular to airflow.
8. Verify that all fasteners are secure:
• L-bracket to duct
• Dispersion tubes to L-bracket
• Hose clamps on 2" (DN50) tubes
• Header support bracket fastener
9. Secure and seal the header escutcheon plate around the header.
38
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Note:
See Page 39 for steam supply and
condensate drain line connection instructions.
INSTALLATION
Dispersion: Rapid-sorb
FIGURE 39-1: ULTRA-SORB WITH THE
HIGH-EFFICIENCY TUBE OPTION
STEAM SUPPLY CONNECTIONS TO RAPID-SORB HEADER
Connect the steam supply interconnecting piping from the humidifier to the
Rapid-sorb. Steam supply piping requires a minimum of 1/8"/ft (1%) pitch
toward the header.
If two humidifiers are supplying one Rapid-sorb, a steam supply connector
is needed. Typically, the steam supply connector attaches to the Rapid-sorb
header supply end with hose cuff and clamps:
1. Always run separate steam tubing from each cylinder to the connection
on the dispersion device. Connect a maximum of two cylinders to any
single dispersion unit. See page 25 for more detailed instructions and
connector kit part numbers.
2. Position the steam supply connector to accept the steam supplies while
maintaining the necessary pitch.
3. Make sure the hose clamps on the steam supply connector and header are
tight.
High-efficiency Tube option
Dispersion assemblies with the High-efficiency
Tube option are designed to produce
significantly less dispersion-generated
condensate and airstream heat gain, which
reduces wasted energy by up to 85%.
These improvements are accomplished by
reducing the thermal conductivity of the tubes
with 1/8" of polyvinylidene fluoride (PVDF)
insulating material on the outside of the tubes.
These assemblies require careful unpacking,
installation, and handling.
CONDENSATE DRAIN CONNECTIONS TO RAPID-SORB HEADER
Piping must be minimum 3/4" I.D. (DN20) and rated for 212 °F (100 °C)
minimum continuous operating temperature.
The condensate drain line must be piped as shown in Figure 35-1. Provide
a 6" (150 mm) drop prior to a 5" (125 mm) water seal to:
• Ensure drainage of condensate from the header
• Keep steam from blowing out of the drain line
After the water seal, run the drain line to an open drain with a 1" (25 mm)
vertical air gap.
• Cut the drain line at a 45° angle on the end above the drain to permit a
direct stream of water into the drain pipe while maintaining a 1" (25 mm)
air gap.
• Locate air gap only in spaces with adequate temperature and air movement
to absorb flash steam, or condensing on nearby surfaces may occur.
Ultra-sorb
All drain lines must be installed and sized according to governing codes.
ULTRA-SORB® MODEL LV
For Ultra-sorb steam dispersion panel instructions, see the installation,
operation, and maintenance manual shipped with the Ultra-sorb.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
39
INSTALLATION
Dispersion: XT steam blowers
XT STEAM BLOWER RISE, SPREAD, AND THROW
On a call for humidity, the controller closes the contactors
to energize the humidifier electrodes and the XT steam
blower. When the call for humidity is satisfied, the
controller opens the humidifier contactor, which stops the
steam blower.
Air intake
Rise
As steam is discharged from the XT steam blower, it
quickly cools and turns to a visible fog that is lighter than
air. As this fog is carried away from the XT steam blower
by the airstream, it tends to rise toward the ceiling. If
the fog contacts solid surfaces (columns, beams, ceiling,
pipes, etc.) before it disappears, it can condense and
drip. The greater the space relative humidity, the further
the fog will rise, spread, and throw.
Spread
Throw
Steam outlet
OM-7686
mc_051712_1241
Table 40-1 lists the maximum rise, spread, and throw non-wetting distances for XT Series humidifiers with XT steam
blowers. Surfaces cooler than ambient temperature, or objects located within this minimum dimension, can cause
condensation and dripping. To avoid steam impingement on surrounding areas, observe the minimum non-wetting
distances in the table.
XT steam blowers are field wired to the XT Series humidifier blower terminals. A wiring diagram is included with the XT
steam blower.
mc_052312_1625
Table 40-1:
XT steam blower minimum non-wetting distances
Nominal
steam
capacity
Model
XTS / XTP lbs/hr kg/h
30% RH @ 70 ºF (21 ºC)
40% RH @ 70 ºF (21 ºC)
50% RH @ 70 ºF (21 ºC)
60% RH @ 70 ºF (21 ºC)
Rise
Rise
Rise
Rise
ft
m
Spread
Throw
ft
ft
m
m
ft
m
Spread
Throw
ft
ft
m
ft
m
Throw
ft
ft
m
m
ft
m
Spread
Throw
ft
ft
m
m
002
5
2
0.7 0.2 0.9 0.3 1.9 0.6 0.8 0.2 1.2 0.4 2.1 0.6 1.1 0.3 1.5 0.5 2.5 0.8 1.5 0.5 1.5 0.5 3.2 1.0
003
10
5
1.4 0.4 1.9 0.6 3.8 1.2 1.7 0.5 2.4 0.7 4.3 1.3 2.3 0.7 3.0 0.9 5.0 1.5 3.0 0.9 3.0 0.9 6.5 2.0
006
20
8
2.5 0.8 2.8 0.9 6.5 2.0 3.0 0.9 3.3 1.0 7.4 2.3 3.8 1.2 4.0 1.2 8.5 2.6 4.0 1.2 4.0 1.2 10.0 3.0
010
30
14
3.1 0.9 3.0 0.9 7.5 2.3 3.6 1.1 3.4 1.0 8.7 2.7 4.3 1.3 4.0 1.2 9.5 2.9 4.2 1.3 3.5 1.1 11.0 3.4
017
50
22
3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
025*
75
34
3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
033*
100
45
3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
Rise:
Spread:
Throw:
* These
Minimum non-wetting height above the steam outlet of the XT steam blower
Minimum non-wetting width from the steam outlet of the XT steam blower
Minimum non-wetting horizontal distance from the steam outlet of the XT steam blower
models use two XT steam blowers.
mc_051712_1240
40
m
Spread
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion: XT steam blowers
FIGURE 41-1: XT STEAM BLOWER DIMENSIONS
The XT steam blower can be mounted on top
of an XT Series humidifier cabinet, or wallmounted remotely from the humidifier. See
Figure 41-1.
SDU-006E shown
Front
Side
Back
SDU-006E, for capacities up to 20 lbs/hr (9.1
kg/h), can be directly mounted on Models XTS
/ XTP 002 through 006.
E
A
C
D
SDU-017E, for capacities up to 50 lbs/hr (22.7
kg/h), can be directly mounted on Models XTS
/ XTP 010 and 017.
F
B
OM-7688
mc_051712_1525
XT Series humidifiers can be configured to
operate with one or two steam blowers.
Multiple SDU-017 are used remotely with
Model XTS / XTP 025 or 033. See Table 41-2.
Note: XT steam blower installation must comply
with governing codes.
Table 41-1:
XT steam blower dimensions
Table 41-2:
Single or multiple XT steam blowers for XT Series humidifiers*
SDU-006E
SDU-017E
Model
SDU-006
per kit
SDU-017
per kit
002
1
—
350
003
1
—
11.0
279
006
1
—
76
3.6
91
010
—
1
3.9
99
7.1
180
017
—
1
2.7
69
4.2
107
025
—
2
033
—
2
042 through 096
n/a
n/a
Dimension
inches
mm
inches
mm
XTS / XTP
A
14.7
373
17.9
455
B
6.0
152
13.8
C
7.8
198
D
3.0
E
F
mc_051712_1526
* XT steam blowers are sold as kits to match the associated XT Series
humidifier. The number of XT steam blowers per kit are shown in this table.
mc_110110_1541
Table 41-3:
XT steam blower specifications
Maximum capacity
Shipping weight
Operating weight
Volume airflow
Current draw at
115V (50/60 Hz)
Input
power
Noise
3.0
0.16 A
17 W
49 dBA
18.8
0.23 A
23 W
53 dBA
Model
lbs/hr
kg/h
lbs
kg
lbs
kg
cfm
m3/min
SDU-006E
20
9.1
14.0
6.4
11.0
5.0
106
SDU-017E
50
22.7
29.0
13.2
24.0
10.9
665
Notes:
• XT steam blowers ship separately from XT Series humidifiers.
• Noise measurements taken 6.5' (2 m) in front of XT steam blower cabinet.
mc_051712_1527
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
41
INSTALLATION
Dispersion: XT steam blowers
MOUNTING XT STEAM BLOWER ON TOP OF HUMIDIFIER
The condensate tee kit shipped with the XT steam blower returns condensate
from a top-mounted XT steam blower to the humidifier's cylinder fill hose. See
Figure 42-1. Install the kit as follows:
1. If humidifier is not already mounted to wall, see “Wall mounting
humidifier” on Page 10.
2. Remove steam cylinder (see “Removing steam cylinder”on Page 10).
3. Assemble condensate hose from kit to condensate outlet at base of steam
box, and install both plastic ties (included) on hose to ensure secure
connection to steam box condensate outlet.
4. Assemble hose cuff and clamp to steam port on steam box.
For remote-mounting the XT steam blower, see
Page 42.
FIGURE 42-1: CONDENSATE TEE KIT FOR
TOP-MOUNTED XT STEAM BLOWER
* Supplied with
condensate
tee kit
Steam box
Two plastic ties*
Steam port
5. Remove middle-rear knockout on top of humidifier cabinet, and mount XT
steam blower to wall as noted on Page 42.
6. Feed condensate hose into humidifier cabinet through knockout hole
created in Step 5, place XT humidifier below XT steam blower on wall,
and secure humidifier to wall.
7. Push small burr of tee into loose end of condensate hose that was fed into
cabinet in Step 6.
Condensate
hose*
Tee*
5/8" fill hose
(see inset below)
OM-7697
8. Cut midpoint of 5/8" fill hose that connects center port on fill cup to fill
connection on floor of humidifier cabinet. Avoid kinks by leaving slack in
fill hose for cylinder installation.
5/8" fill hose
9. Install tee in 5/8" fill hose that was cut in Step 8.
10. Install steam cylinder (see “Installing steam cylinder” on Page 12).
OM-7640
FIGURE 42-2: TOP- AND REMOTE-MOUNTED XT STEAM BLOWER
Mounted on top of humidifier
Mounted remotely from humidifier
Condensate returned to
steam cylinder fill hose
Condensate
returned to
open drain
(condensate can
also be returned to
humidifier fill cup)
OM-7670
One XT Series humidifier with
two XT steam blowers
OM-7698
mc_051712_1252
OM-7699
42
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion: XT steam blowers
REMOTE MOUNTING XT STEAM BLOWER
The XT steam blower is constructed with a pitch toward the drain; however, it
must be installed level and plumb for proper drainage. See the Warning at left.
Follow the instructions below for your wall type:
Mount the XT steam blower using the lag bolts provided. Follow the instructions
below for mounting on a wood stud wall.
1. Mount spanner board on wall, spanning at least two studs, at top of XT
steam blower cabinet (for the lag bolts).
2. Predrill pilot holes in spanner board, and secure XT stream blower to
spanner board with lag bolts.
Note: Use the appropriate mounting methods and mounting hardware for
other wall types.
WARNING
Standing water in XT steam blower
Make sure the XT steam blower is
installed plumb. If it is not installed
plumb, standing water can accumulate,
which can:
• cause bacteria and mold growth,
which can cause illness;
• affect XT steam blower performance;
• cause 212 °F (100 °C) water to
discharge from the XT steam blower,
which can cause severe personal
injury.
mc_030311_1109
See Table 41-1 to determine clearance requirements for your application.
Make sure walls, ceilings, and other obstructions are not within the non-wetting
dimension, or condensation and dripping could occur (read Page 40).
Provide at least 3" (76 mm) of clearance on each side of the XT steam blower
for air intake.
mc_052312_1522
INSTALLING BASE PLATE
The steam blower has a base plate for remote-mounted steam blower
applications. The base plate isolates the hot steam box from contact. After the
electrical connections are made, assemble the base plate onto the bottom of
the steam blower with the screws provided.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
43
INSTALLATION
Dispersion: XT steam blowers
WIRING XT STEAM BLOWERS
Make the following wiring connections between the humidifier and the XT
steam blower, and tighten all terminals securely:
Connect XT steam blower fan wires to humidifier terminals 32, 33, and GRD.
FIGURE 44-1: PIPING CONDENSATE TO
HUMIDIFIER FILL CUP
Field-installed hole in
fill cup cap for remote
XT steam blower
Refer to the external connections diagram shipped with the XT steam blower.
PIPING CONDENSATE TO HUMIDIFIER FILL CUP
1. Remove fill cup cap from XT Series humidifier, and drill a 1/2" (13 mm)
hole in fill cup cap for SDU-006E and SDU-017E condensate hose as
shown in Figure 44-1.
2. Route XT steam blower condensate hose through hole in fill cup cap, and
secure condensate hose in place.
Note: Make sure condensate hose has a water seal, as shown in Figure
44-2. The water seal is required to ensure condensate drainage
from the XT steam blower and to keep steam from blowing out of the
condensate hose.
Approximate cap
orientation to front of
XT Series humidifier cabinet
OM-7636X
Drill hole here for XT steam blower
condensate hose
mc_030311_1110
FIGURE 44-2: PIPING CONDENSATE TO
DRAIN
PIPING CONDENSATE TO DRAIN
SDU-017E shown
The XT steam blower condensate hose must be routed as shown in Figure
44-2. The water seal is required to ensure condensate drainage from the XT
steam blower and to keep steam from blowing out of the condensate hose.
After the water seal, run the condensate hose to an open drain. Cut the hose
at a 45 degree angle on the end above the drain to permit a direct stream of
water into the drain while maintaining an air gap.
The condensate hose must be installed and sized according to governing
codes.
mc_052312_1523
OM-7687
Condensate
hose
Plastic tie
ADDITIONAL INSTRUCTIONS
See instructions for piping from XT Series humidifier to XT steam blower in
Figure 16.
1” (25 mm)
air gap
7” (178 mm)
water seal
Spill funnel
(plumb to floor
drain)
Open floor
drain. Refer
to governing
codes for drain
pipe size and
maximum
temperature
requirements.
Note:
Shown with condensate to open drain.
Condensate can also be returned to fill cup
through field-installed hole in fill cup cap. See
Figure 44-1.
mc_052312_1115
44
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION
Principle of operation
1. CONTROLLER RECEIVES A CALL FOR HUMIDITY
When the RH level in the humidified space drops below set point, the humidifier controller
receives a call for humidity and calculates a corresponding electrical current. The controller
closes the contactor, which energizes the electrodes. If there is not enough water in the steam
cylinder, the fill valve opens and water enters the steam cylinder.
2. ENERGIZED ELECTRODES BOIL WATER INTO STEAM
When the water level in the steam cylinder rises to touch the electrodes, electrical current flows
through the water between the electrodes. Electrical resistance in the water causes the water to
heat up and boil into steam. The steam flows through the steam outlet and through steam hose or
tubing to the XT steam blower or dispersion assembly, where it is discharged into the airstream.
3. ELECTRICAL CURRENT INCREASES TO MEET DEMAND
As the amount of water covering the electrodes increases, current flow increases. The fill valve
remains open until the amperage increases to 10 percent above the current corresponding to
the demand signal. Then the fill valve closes, and the water boils into steam.
4. WATER CONTINUES TO BOIL INTO STEAM
As the water boils into steam, the amount of water covering the electrodes decreases,
and current flow decreases. When current flow decreases to 10 percent below the current
corresponding to the demand signal, the fill valve opens to increase the water level in the steam
cylinder, which increases current flow and steam production.
5. CONTROLLER INITIATES DRAIN/FILL CYCLES TO FLUSH CONDUCTIVE IONS
As steam production continues, the concentration of conductive ions in the water increases,
eventually leading to increased electrical current through the water. An algorithm monitors
water conductivity and auto tunes drain and fill cycles to keep electrical current within demand
parameters. This optimizes humidifier performance based on water conditions and steam
production.
The humidifier has user-selectable drain water tempering. When drain water tempering is
selected, drain water is automatically cooled before entering the drain.
mc_091010_1415
WATER CONDUCTIVITY
In electrode humidifiers, steam output is directly related to the resistance of the water in the steam
cylinder and, therefore, the conductivity of the water between the electrodes. Higher water levels
cover more electrode surface and result in more steam; lower water levels cover less electrode
surface and result in less steam. Since water conductivity and water level both correlate to steam
output, DriSteem’s algorithm monitors conductivity and manages drain and fill cycles to optimize
humidifier performance and provide proper steam output.
DRAIN AND FILL CYCLES
As the water in the cylinder boils into steam, the concentration of 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 fill water. The more conductive the fill 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 proper steam output.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
45
OPERATION
Principle of operation
FIGURE 46-1: XT SERIES HUMIDIFIER PRINCIPLE OF OPERATION
4
SAFETY FUNCTIONS
XT Series humidifiers are protected against running dry —
current does not flow if the electrodes in the steam cylinder
are not submerged in water.
If the current rating exceeds 120% of nominal current, the
drain valve opens automatically. As the water level drops,
the current rating drops back to the nominal value.
If the current rating exceeds 120% of the nominal current
after several drainage operations, the humidifier shuts
down automatically.
1
2
3
OM-7661X
mc_051712_1300
5
(supply water
connection)
46
Overflow
5
(drain)
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION
Start-up checklist
Your humidification system may not have all of the options listed below. If an
item does not apply to your system, skip to the next item.
☐ Verify that humidifier, controls, piping, electrical connections, steam supply,
and dispersion units(s) are installed according to installation instructions in
this manual and:
• Ladder style wiring diagram and external connections wiring diagram
(inside humidifier cabinet)
• Governing codes
• XTP only: Vapor-logic Installation and Operation Manual
WARNING
Electric shock hazard
Contact with energized circuits can
cause property damage, severe
personal injury or death as a result of
electrical shock or fire.
Make sure cabinet doors are installed
before turning on electrical power.
For proper operation of safety interlock
switch, install electrical-side door first,
then install cylinder-side door.
– Installation section
– Pre-installation checklist
☐ Verify that field wiring is done per instructions in this manual and per unit
wiring diagram.
☐ Confirm that proper grounding and an approved earth ground are provided.
☐ Confirm that instructions in Warning at left have been followed.
☐ Confirm that water fill line was thoroughly flushed before it was connected to the humidifier.
☐ Verify that humidifier is mounted level and securely supported before filling with water. See
operating weights in Table 4-1.
☐ Make sure cylinder is fully seated into drain valve, and verify that all electrical connections are
secure.
☐ Turn water supply on (do not use demineralized, deionized, or reverse-osmosis water) and
confirm that drain valve is closed.
If the force of air exiting water supply lines blows fill cup cap off during first fill cycle, this is not
a sign of defect or a cause for concern; simply replace fill cup cap after all air has exited water
line.
☐ Verify that humidifier is level and plumb when filled with water.
☐ Turn power on and confirm that Model XTS control panel lights or Model XTP keypad/display
are illuminated.
☐ Confirm that airflow switch is closed.
☐ If you choose not to use airflow switch:
Model XTP: Jumper AFsw and 24vac terminals
Model XTS: Jumper A and B terminals
☐ If you choose not to use on-off duct high limit:
Model XTP: Jumper 21vdc and DHL terminals
Model XTS: Jumper A and B terminals
☐ Model XTP only: Confirm that high limit humidistat input is closed or that variable air volume
(VAV) control system high limit transmitter is connected.
☐ With sufficient water in steam cylinder, airflow switch closed, high limit humidistat closed, door
safety interlock switch closed, and a call for humidity, verify that heat outputs are activated.
☐ If you experience difficulties, see “Troubleshooting” on Page 54.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
47
OPERATION
Model XTP
START-UP PROCEDURE
After the Model XTP humidifier is installed and connected properly:
1. Perform all applicable “Start-up checklist” items on Page 47.
2. Read and follow the instructions in the “Operation” section of the
Vapor-logic Installation and Operation Manual.
3. Note: During start-up, do not leave the humidifier unattended.
4. Monitor humidifier operation through multiple drain and fill cycles.
5. Perform the cleaning procedure as follows:
a. Operate humidifier long enough for steam to be produced.
b. Using the keypad/display:
– At the Main menu, select Tank Status, and press Enter.
– Select Mode, and press Enter.
– Select Drain, and press Enter.
– Let steam cylinder drain for 5 to 10 minutes until empty.
WARNING
Electric shock hazard
Only qualified electrical personnel
should perform start-up procedure.
Contact with energized circuits can
cause property damage, severe
personal injury or death as a result of
electrical shock or fire.
Make sure cabinet doors are installed
before turning on electrical power.
For proper operation of safety interlock
switch, install electrical-side door first,
then install cylinder-side door.
c. Restart the humidifier, and repeat Steps a and b.
CAPACITY LIMITATION
Model XTP humidifier capacity can be limited to a user-specified maximum
using the keypad/display or Web interface. From the Main menu, select Tank
Setup, then select Capacity Adjustment for menu options.
The Vapor-logic Installation and Operation
Manual is a comprehensive operation manual.
Refer to it for information regarding the
following features:
• Keypad/display and Web interface setup
and menu information
• Control input signals and functions
• Safety features
• Alarm screens and fault messages
This manual ships with Model XTP
humidifiers and is available at our website:
www.dristeem.com
48
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION
Model XTS
START-UP PROCEDURE
WARNING
After the Model XTS humidifier is installed and connected properly:
Electric shock hazard
Only qualified electrical personnel
should perform start-up procedure.
1. Perform all applicable “Start-up checklist” items on Page 47.
2. Press On-off button on humidifier control panel (see Table 50-1).
On-off light illuminates green. Steam light will illuminates green, indicating
a call for humidity. Fill light will illuminate green, indicating that fill valve is
open and cylinder is filling.
You should hear water flowing. If water flows down drain while cylinder is
filling, check for kinks in hoses and make sure O-ring is properly seated in
groove in drain valve.
Contact with energized circuits can
cause property damage, severe
personal injury or death as a result of
electrical shock or fire.
Make sure cabinet doors are installed
before turning on electrical power.
For proper operation of safety interlock
switch, install electrical-side door first,
then install cylinder-side door.
3. After Fill light turns off, perform cleaning procedure as follows:
a. Operate humidifier long enough for steam to be produced.
b. Press and hold On-off button for five seconds to begin draining cylinder.
Drain light illuminates to indicated Drain mode, and you might hear fill
valve open to allow cold water into cylinder to cool drain water. Drain
light illuminates for several minutes while cylinder drains.
c. Restart humidifier, and repeat Steps a and b.
4. Monitor humidifier operation through multiple drain and fill cycles.
FIGURE 49-1: MODEL XTS DIP SWITCH
SETTING FOR AUTOMATIC DRAIN
WATER TEMPERING
ENABLING AUTOMATIC DRAIN WATER TEMPERING
Model XTS is shipped with drain water tempering set to OFF. To activate
automatic drain water tempering, find dip switch #12 on the control board,
and place it in the ON position as shown in Figure 49-1.
Slide dip switch 12 to
the ON position for
automatic drain water
tempering.
LIMITING HUMIDIFIER CAPACITY
To limit Model XTS humidifier capacity, find dip switches 9, 10, and 11 on the
control board. Slide them to the positions shown in Table 49-1.
CHANGING CONTROL INPUT SIGNALS
To change Model XTS humidifier control input signals, find dip switches 1 and
2 on the control board. Slide them to the positions shown in Table 49-2.
Note: Do not connect ground signal to earth ground.
Table 49-1:
Changing Model XTS humidifier control input signals
Control input
Dip switch
settings
1
Table 49-2:
Limiting Model XTS humidifier
capacity
Dip switch settings
Humidifier
capacity
(% of nominal)
9
10
11
100
Off
Off
Off
90
On
Off
Off
80
Off
On
Off
2
70
On
On
Off
Off
Off
On
On-off humidistat
Off
Off
60
0 – 20 VDC (JP300 must be in the 1/2 position)
On
Off
50
On
Off
On
40
Off
On
On
30
On
On
On
0 – 10 VDC (with JP300 in the 1/2 position) or
0 – 20 mA (with JP300 in the 2/3 position)
Off
On
2 – 10 VDC (with JP300 in the 1/2 position)
or 4 – 20 mA ( with JP300 in the 2/3 position)
On
On
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
49
OPERATION
Model XTS control panel
Table 50-1:
Model XTS control panel
Function
Symbol
On-off / function
selection button
Light
—
Press to turn humidifier on and off. Resets timer for start-up water conditioning.
Note: Disconnect power to humidifier to reset internal timers.
Flashing green
Humidifier is preparing to turn on. Occurs if power to humidifier was turned off when humidifier was
on. Humidifier turns on after light flashes for ten seconds.
Solid green
Humidifier is on.
Off
Humidifier is turned off, or power is disconnected. Outputs are not energized.
Solid green
Fill valve is energized, filling, or replenishing cylinder with water. During drain cycle when fill valve is
open (to allow cold water into cylinder to temper drain water), the Fill light does not illuminate.
Flashing green
Fill and drain valves are pulsing to dislodge mineral deposits from drain. Occurs if foam is being
detected.
Solid red
Humidifier cannot fill cylinder with water. Humidifier stops operating. Occurs after fill valve has been
energized for 40 minutes and high water probe does not detect water. Alarm relay (P200) is on.
Off
Fill valve is not energized.
Solid green
Humidifier is turned on and receiving a call for humidity.
Flashing green
Occurs when there is a call for humidity and limits circuit is open.
Solid yellow
Humidifier is producing steam, but at less than the rated capacity. Occurs if humidifier has operated
for 168 hours and has not reached nominal current.
Off
Humidifier is not producing steam.
Solid green
Drain valve is energized, allowing water to drain from cylinder.
Flashing green
Humidifier is preparing to drain, and automatic drain water tempering is enabled.
Off
Drain valve is not energized.
Flashing red
Cylinder has reached end of life. Humidifier continues to operate but at reduced capacity. Occurs
after humidifier has operated for 168 hours plus another 24 hours at less than 75% of the maximum
operating current.
Solid red
Humidifier is not operating and requires service. Alarm relay (P200) is on.
Fill
Steam
Drain
Service
Simultaneously flashing:
Red Fill light
Yellow Steam light
Red Service light
Description
Faulty current sense wiring.
On-off switch for humidifier control board.
– = On (closed)
O = Off (open)
Controller on-off switch
WARNING
Electric shock hazard
The controller on-off switch is not a safety shut-off to humidifier power wiring. Line voltage
to the humidifier remains energized even when controller on-off switch is open. To
disconnect electrical power to the humidifier, see the shutdown procedure on Page 50.
50
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Maintenance: Shutdown and cool-down procedures
SCHEDULED MAINTENANCE
At 1000-hour intervals or when “Service interval reached”
appears in the Messages Log, inspect the steam cylinder,
fill and drain valves, steam hose, condensate piping,
water supply piping, drain piping, drain, and all other
parts for proper operation and cleaning requirements.
Verify proper operation of the high limit humidistat, relays,
and airflow proving switch.
STEAM CYLINDER SERVICE LIFE
Steam cylinder service life depends on operating hours
and water hardness. If “Check cylinder” appears in
the Messages Log during and shortly after start-up, the
message can be cleared and will stop repeating after a
few drain and fill cycles.
WARNING
Shutdown procedure
To prevent severe personal injury or death from electrical
shock, follow this shutdown procedure before performing
service or maintenance procedures on this humidifier (after
cylinder is drained and cooled):
1. Use standard control panel (Model XTS) or Vapor-logic
keypad/display (Model XTP) to drain cylinder.
2. Model XTP only: Use Vapor-logic controller keypad/
display to change control mode to Standby.
3. Shut off all electrical power to humidifier using fieldinstalled fused disconnect, and lock all power disconnect
switches in OFF position.
Note: Two-cylinder XT Series humidifiers have two power
supply connections.
When “Check cylinder” appears in the Messages Log
4. Close field-installed manual water supply shut-off valve.
after extended operation, the humidifier will continue
to run, but the cylinder must be replaced to ensure
optimum output. Sure signs that a cylinder needs to be replaced are when it
is approximately one-third full of minerals, or minerals have bridged between
WARNING
electrodes.
To replace the steam cylinder, first follow the cool-down procedure below.
COOL-DOWN PROCEDURE
Model XTS
Hot water system
Cylinder and any undrained water may
be hot. To avoid injury from hot water,
follow the cool-down procedure before
proceeding with maintenance.
1. Press and hold the on-off / function selection button for five seconds.
2. Let steam cylinder drain for 5 to 10 minutes (drain water is automatically
tempered when drain water tempering is selected).
3. Close field-installed manual supply water shut-off valve, and allow cylinder
to continue draining.
Model XTP
1. In Vapor-logic keypad/display Main menu, select Tank Status, and press
Enter.
2. Select Mode, and press Enter.
3. Select Drain, and press Enter.
4. Let steam cylinder drain for 5 to 10 minutes (drain water is automatically
tempered when drain water tempering is selected).
5. Close field-installed manual supply water shut-off valve, and allow cylinder
to continue draining.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
51
MAINTENANCE
Maintenance: Replacing steam cylinder
1. When steam cylinder is completely empty, turn humidifier off. Place all
power disconnects in OFF position, and lock in OFF position.
2. Remove cabinet doors, and make sure cylinder and humidifier components
have cooled.
3. Pull the electrode plugs straight up off the cylinder and disconnect the high
water sensor wire.
Note: Because of tight clearances, perform Steps 4 through 6 only if
servicing Model XTS / XTP 002 through 017 with top-mounted steam
blower. For all other models, skip to Step 7.
4. Remove both clamps on steam hose that connects to cylinder and
steam blower.
5. Slide steam hose from Step 4 all the way up until it is tight
against bottom of steam blower.
6. Raise cylinder straight up out of drain valve body, and remove
from cabinet. Skip to Step 9.
7. Loosen steam hose clamp, and disconnect steam hose from cylinder.
8. Remove steam cylinder. See “Removing steam cylinder”on Page 10).
9. Vacuum scale and debris out of drain valve port.
Note: For more thorough cleaning, see drain valve maintenance instructions
on Page 52.
10. Replace O-ring in drain valve body (new cylinder ships with new O-ring).
Make sure O-ring is correctly placed.
11. Dampen O-ring seals with water before replacing cylinder. Do not use
lubricant or other substance.
12. Install new steam cylinder. See “Installing steam cylinder” on Page 12).
13. Connect steam hose to cylinder, and re-install hose clamp.
If returning humidifier to operation, see the start-up procedure:
• Page 48 for Model XTP
• Page 49 for Model XTS
52
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Note:
DriSteem recommends keeping a spare steam
cylinder in stock during the humidification
season. See “Replacement parts" on Pages 59
and 61.
CAUTION
If cylinder plugs become loose,
damage to the humidifier may
occur. Obtain replacement plugs
from DriSteem. See “Replacement
parts” on Pages 59 and 61 for part
numbers.
MAINTENANCE
Maintenance: Drain valve
DRAIN VALVE
FIGURE 53-1: DRAIN VALVE ASSEMBLY
If either of the following issues occur after several months of runtime, follow the
drain valve maintenance procedures below.
Drain valve body
Drain valve coil
O-ring
• Drain valve is closed, but draining and filling continue.
• End of cylinder life prompt appears prematurely.
Drain cup plate
DRAIN VALVE BODY MAINTENANCE
1. When steam cylinder is empty, turn humidifier off. Place all power
disconnects in OFF position, and lock in OFF position. See Figure 53-1.
2. Remove cabinet doors and steam cylinder (see Page 10).
Insert
Ground plate
3. Vacuum loose scale and debris out of the drain valve port.
Drain cup
4. Disconnect 2-pin Molex plug from 24 VAC drain valve coil.
5. Slide cap (A) off of drain valve coil (C).
6. Turn hex nut (B) counter-clockwise. Loctite on nut will cause drain valve
coil assembly to turn out of drain valve body (G). Remove coil/actuator
assembly from drain valve body. Make sure spring (E) and plunger (F) do
not fall out of actuator (D).
7. Clean plunger (F), spring (E), actuator (D), and plastic drain valve body
(G) with clean water.
8. Reassemble drain valve. When threading actuator (D) into drain valve
body (G), make sure it is not cross threaded. Torque actuator into drain
valve body to 18 in-lb (2.0 N·m).
OM-7630
Notes:
• Pay close attention to all parts shown above.
Verify that ground plate is in groove of drain
cup, and insert is in place through ground
plate loop.
• Failure to get ground plate and insert solidly
connected to frame will compromise ground
safety circuit.
9. Plug Molex plug into its mating wire harness plug, and slide cap (A) onto
drain valve coil (C).
10. See “Start-up procedure” on Page 48 if returning humidifier to
operation.
Note: If the procedure above did not resolve drain valve issues, perform the
drain valve assembly maintenance procedure on Page 53.
FIGURE 53-2: DRAIN VALVE BODY
Drain valve body (G)
Plunger (F)
Spring (E)
Drain valve coil (C)
Actuator (D)
Torque to 18 in-lb (2.0 N·m)
Nut (B)
Cap (A)
Wires to Molex plug
OM-7631
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
53
MAINTENANCE
Troubleshooting
DRAIN VALVE ASSEMBLY MAINTENANCE
DriSteem Technical Support
Perform the following procedure only if the procedure on Page 53 does not
resolve drain valve issues. See Figure 52-2.
Have the following information ready when
calling Technical Support. See phone number
inside front cover of this manual.
1. Perform Steps 1 through 4 on Page 53.
2. Remove the three screws and washers securing drain cup plate to drain
cup.
3. Lift drain valve body/plate assembly off of drain cup.
Humidifier model number
_______________________________
4. Vacuum loose scale and debris out of drain cup.
Humidifier serial number
5. Remove ground plate, and clean scale and debris from ground plate and
outlet of drain valve body.
_______________________________
6. Reassemble drain valve assembly: Fit mounting screws with washers, insert
them through drain cup plate, and tighten them into drain cup. See notes
in Figure 52-2.
When issue began
7. Clean end of hose, and reconnect it to drain valve body with hose clamp.
Plug Molex plug into its mating wire harness plug.
_______________________________
8. See “Start-up procedure” on Page 48 if returning humidifier to
operation.
MODEL XTS TROUBLESHOOTING
_______________________________
_______________________________
Issue description
Follow the procedure below to resolve issues with Model XTS humidifiers:
_______________________________
1. Review possible causes and recommended actions in Table 54-1.
_______________________________
2. Follow the Test mode procedure beginning on Page 56.
_______________________________
The Test mode procedure is intended to check the general function of Model
XTS humidifiers and components, and to help diagnose and resolve general
operational problems.
3. If Table 54-1 and the Test mode procedure do not help you solve the issue,
call DriSteem (see inset at right) with the following information available:
• Humidifier model number and serial number (see nameplate on side of
the humidifier and steam blower)
• Issue description
Example: water leaking, low humidity, high humidity, etc.
• When issue began
Example: After maintenance, cylinder replacement, etc.
• System changes
Example: Pressure, new service, new controller, relocation, change in
maintenance, etc.
54
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Troubleshooting
Table 55-1:
Model XTS humidifier troubleshooting guide
Problem
Possible cause
Action
Check L1, N/L2 and Ground connections.
Field-wired terminal connections Check wiring connections and settings on accessory items such as high limit switch and airflow
proving switch.
Follow the shutdown procedure on Page 50, then make sure electrode and high water probe
connections on top of cylinder are securely connected.
Make sure ribbon cable from membrane switch is securely plugged into control circuit board.
Humidifier will
not turn on or
turn off.
Internal connections
Check that terminals from internal components are securely attached to proper tabs on circuit
boards.
Make sure one of the electrode wires extends through toroid ring on current sensing circuit board.
No power to humidifier
Humidifier not turned on
No power to 24V control circuit
Steam light does Call for humidity not being
not turn on.
received
Malfunctioning drain valve.
Check main power supply and switch.
Check for proper voltage across L1 and N/L2 terminals.
Make sure front cover is attached to engage safety interlock switch. Press On-off button.
Make sure ribbon cable from membrane switch is securely plugged into control circuit board.
Check reset switch on transformer.
Check wiring and settings of high RH limit switch and airflow proving switch.
Check valve function using Test Mode.
Debris in drain valve preventing
Remove cylinder, and clean debris from drain valve.
it from closing
Water constantly
runs down drain. O-ring in drain valve not
properly seated in groove
Water flowing from fill cup
overflow port
Remove cylinder, and reposition O-ring.
Check internal hoses, and remove kinks or blockage.
Check supply water connection at fill valve inlet. Tighten as needed.
Water is leaking
Loose plumbing connections
from humidifier.
Check internal hose clamp connections. Reposition clamps and tighten as needed.
Check steam hose connection on top of cylinder. Tighten clamp as needed.
Humidifier makes
Make sure steam hose has constant downward slope to humidifier or to tees and traps in low
Excess condensate in steam hose
gurgling sound.
spots of hose.
Make sure water supply line does not contact ductwork.
Fill valve makes
banging sound.
Water hammer from line
pressure
Install shock arrestor.
Install section of 1/4" braided fill line. Conform to governing codes.
Humidifier will
not fill.
Humidifier will
not drain.
Field-installed supply water shutOpen valve.
off valve not open
Malfunctioning fill valve
Check valve function using Test mode.
Debris in drain valve blocking
outlet port
Remove cylinder and clean debris from drain valve.
Malfunctioning drain valve
Check valve function using Test mode.
Continued
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
55
MAINTENANCE
Troubleshooting
Table 55-1:
Model XTS humidifier troubleshooting guide (continued)
Problem
Water in duct from dispersion
tube.
Possible cause
Action
Dispersion tube installed
incorrectly
Install dispersion tube with tubelets facing straight up.
Impurities in steam hose or
tubing causing foaming
Rinse cylinder and hose in clean water.
Plumb humidifier to filtered water.
Service light flashing red before
Cylinder full of mineral deposits
end of humidification season.
Plumb humidifier to softened water.
Steam light is yellow.
Humidifier is not satisfying
demand.
Excess humidity.
56
Humidifier operating below
rated capacity
Notes:
• This is normal for systems
plumbed to low-conductivity
water and systems that
operate for short cycles.
• XT Series humidifier
recommended fill water
conductivity is
125 to 1250 μS/cm.
Plumb humidifier to softened water.
To determine operating current, attach clamp-on ammeter to one of the electrode
wires on top of cylinder.
Add add 1/4 to 1/2 tab sodium bicarbonate (i.e., Alka Seltzer) to water in cylinder
increase water conductivity. Consult DriSteem for further advice.
Control setting too low
Adjust control to higher setting.
Control mounted in wrong
location
See installation instructions with control for correct mounting location.
Control setting too high
Adjust control to lower setting.
Control mounted in wrong
location
See installation instructions with control for correct mounting location.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Troubleshooting
MODEL XTS TEST MODE PROCEDURE
The humidifier must be powered, and control must be turned to the OFF
position. The humidifier should be plumbed to a water supply and the drain
line should be connected. Test mode involves repeatedly pressing the On-off
button and listening for clicks as the various components are energized and
de-energized. The humidifier will remain in Test mode for five minutes, then
automatically return to the Off state. If the procedure is not completed in five
minutes, restart Test mode. If the humidifier or components do not respond as
indicated, investigate components being tested.
1. Press On-off button, and hold it for 10 seconds until all control panel lights
turn on. On-off, Fill, Steam, and Drain lights will illuminate green. Service
light will illuminate red.
2. Press On-off button again. All control panel lights will turn off, Fill light will
illuminate red, and Steam light will illuminate yellow.
3. Press On-off button again. Red Fill light will turn off, then illuminate green.
Yellow Steam light will turn off, then illuminate green.
4. Press On-off button again. The controller is now in the limits circuit test.
Open/close the airflow, high limit, or interlock switch to toggle the lights
on/off. If all lights are on all limit devices are closed.
5. Press On-off button again. The cylinder light will turn on.
a. If the green On-off LED is also on, the J1 and J3 plugs on the current
sensor circuit board may be installed in reverse orientation or there
is a wiring issue between the current sensor circuit board and XTS
circuit board.
b. If the Red Fill LED is also on, the J1 plug on the current sensor circuit
board may be reversed or there is a wiring issue between the current
sensor circuit board and XTS circuit board.
c. If the Yellow Steam LED is also on, the J3 plug on the current sensor
circuit board may be reversed or there is a wiring issue between the
current sensor circuit board and XTS circuit board.
6. Press On-off button again. The cylinder light will turn off.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
57
MAINTENANCE
Troubleshooting
7. Press On-off button again. Listen for click as power relay is energized.
Steam light will illuminate green. If click is not heard, measure voltage
across terminal block CT (P201). If 24 VAC is present, replace Power
Relay. If 24 VAC is not present, replace control circuit board.
FIGURE 58-1: SAFETY INTERLOCK SWITCH
OM-7730
8. Press On-off button again. Listen for click as power relay is de-energized.
Steam light will turn off.
9. Press On-off button again. Listen for a click as fill valve is energized. Fill
light will illuminate green. Water should flow, filling the cylinder. If fill
valve does not energize, measure voltage across FILL terminal (P202) on
control circuit board. If 24 VAC is present, replace fill valve. If 24 VAC is
not present, replace control circuit board.
Safety interlock
switch; pull button
to override.
10. Press On-off button again. Listen for click as fill valve is de-energized.
Water should stop flowing. Fill light will turn off.
11. Press On-off button again. Listen for a click as drain valve is energized.
Drain light will illuminate green. Water should flow down drain. If valve
does not energize, measure voltage across DRAIN terminal (P201). If 24
VAC is present, replace drain valve. If 24 VAC is not present, replace
control circuit board.
12. Press On-off button again. Listen for click as drain valve is de-energized.
Water should stop flowing down drain. Drain light will turn off.
Exit Test Mode by powering off humidifier or allowing five minutes to elapse.
58
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Safety interlock switch override
If monitoring of humidifier operation is required
during troubleshooting, the safety interlock
switch function can be overridden. To override
the safety interlock function, pull out on the
safety interlock switch button. Interlock function
will be reset automatically when the cylinderside cabinet door is installed. See Figure 58-1.
MAINTENANCE
Troubleshooting
MODEL XTP TROUBLESHOOTING
DriSteem Technical Support
Follow the procedure below to resolve issues with Model XTP humidifiers:
Have the following information ready when
calling Technical Support. See phone number
inside front cover of this manual.
1. Review possible causes and recommended actions in the Troubleshooting
guide in the Vapor-logic Installation and Operation Manual.
2. If the Troubleshooting guide does not help you solve the issue, call
DriSteem (see “DriSteem Technical Support” on Page 54) with the
following information available:
• Humidifier model number, serial number, and firmware version (see
nameplate on side of the humidifier and steam blower)
Humidifier model number
_______________________________
Humidifier serial number
To access firmware version:
_______________________________
Keypad/display: Select Diagnostics in the Main menu, select Humidifier
info, scroll down to Firmware version.
Firmware version
Web interface: Click Diagnostics in the toolbar, click Humidifier info, see
Firmware version below.
_______________________________
• When issue began
Example: Always, after remodel, after a change in weather, etc.
• Issue description
When issue began
_______________________________
Example: water leaking, low humidity, high humidity, etc.
_______________________________
• System changes
Example: Pressure, new service, new controller, relocation, change in
maintenance, etc.
_______________________________
Issue description
_______________________________
_______________________________
_______________________________
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
59
MAINTENANCE
Replacement parts
FIGURE 60-1: MODELS XTS / XTP 002 THROUGH 048 REPLACEMENT PARTS
OM-7702
Subpanel
Earth ground lug
OM-7703
60
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Replacement parts
Table 61-1:
Models XTS / XTP 002 through 048 replacement parts
Item Description
Part No.
Transformer, 208/240/480 to 24 VAC
408965-001
Transformer 277 to 24 VAC
408982
Transformer, 600 to 24 VAC
408986
Transformer, 230/400 to 24 VAC
408985
Contactor - 24 VAC - 35 A
407010-001
Contactor - 24 VAC - 55 A
407010-002
Plug, high water sensor
530010-105
Board, current sensing, 208/230/240/277 V
(Model XTS / XTP 002)
530013-001
Board, current sensing, 400/480 V
530013-002
Board, current sensing, 600 V
530013-003
Board, current sensing, 208/230/240/277/400 V
530013-004
Display board, Vapor-logic controller (Model XTP)
408495-004
Main board, Vapor-logic controller (Model XTP)
183504-004
Main board, standard controller (not shown, Model XTS)
408637-001
7
Kit, electrode wiring (plugs/wires: 1 red, 1 black, 1 white)
194625-001
8*
Kit, cylinder
194601-*
9
Strainer, cylinder
531006
10
Drain valve assembly (see parts in Figure 52-2)
194610-001
Fill valve assembly Models XTS / XTP 002 and 003
194622-001
Fill valve assembly Models XTS / XTP 006 through 017
194622-002
Fill valve assembly Models XTS / XTP 025 through 048
194622-003
Kit, fill cup extension (see parts in Figure 12-1)
194605-101
1
2
3
4
5
6
11
12
*
See cylinder Part No. on your XT Series humidifier.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
61
MAINTENANCE
Replacement parts
FIGURE 62-1: MODELS XTP 050 THROUGH 096 REPLACEMENT PARTS
OM-7704
Subpanel
Earth ground lug
OM-7705
62
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Replacement parts
Table 63-1:
Models XTP 050 through 096 replacement parts
Item
Description
Part No.
Transformer, 208/240/480 to 24 VAC
408965-001
Transformer, 600 to 24 VAC
408986
Transformer, 230/400 to 24 VAC
408985
Contactor - 24 VAC - 35 A
407010-001
Contactor - 24 VAC - 55 A
407010-002
Plug, high water sensor
530010-105
Board, current sensing, 400/480 V
530013-002
Board, current sensing, 600 V
530013-003
Board, current sensing, 208/230/240/277/400 V
530013-004
Board, current sensing, 230/400 V (Model XTP096 only)
530013-005
5
Display board, Vapor-logic controller
408495-004
6
Main board, Vapor-logic controller
183504-004
Kit, electrode wiring
(plugs with wires: 1 red, 1 black, 1 white)
194625-001
Kit, electrode wiring, extended
(plugs with wires: 1 red, 1 black, 1 white)
194625-002
Kit, cylinder, XT-75/150, XT-025/050, 380V, 3P
194601-023
Kit, cylinder, XT-75/150, XT-025/050, 400-600V, 3P
194601-025
Kit, cylinder, XT-100/200, XT-033-096, 380/400V, 3P
194601-026
Kit, cylinder, XT-100/200, XT-033-096, 480/600V, 3P
194601-028
Strainer, cylinder
531006
10
Drain valve assembly (see parts in Figure 52-2)
194610-001
11
Fill valve assembly
194622-003
12
Kit, fill cup extension (see parts in Figure 12-1)
194605-101
1
2
3
4
7
8*
9
*
See cylinder Part No. on your XT Series humidifier.
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
63
MAINTENANCE
Replacement parts
FIGURE 64-1: SDU-006E AND SDU-017E STEAM BLOWERS
OM-7700
Table 64-1:
SDU-006E and SDU-017E steam blowers
Item
Description
Part No.
Fan, SDU-006E, 120V
407109-002
Fan, SDU-017E, 230V
306377
Fan, SDU-006E, 230V
407109-102
Fan, SDU-017E, 120V
306376
1
64
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Accessories
Table 65-1:
Accessories
Description
Part No.
Steam hose, 1" (DN25) x 10' (3 m), for remote XT steam blower
305400-100
Steam hose, 1½" (DN40) x 10' (3 m), wire-reinforced
305400-010
Steam hose, 2" (DN50) x 10' (3 m), wire-reinforced
305560-0010
Condensate hose, 1/4" (DN8) x 13' (4 m), for remote XT steam blower
305400-150
Drain hose cuff, 1" (DN25) I.D. x 12" (305 mm) long
305389-012
Hose clamp, 1" (DN25) I.D.
700560-100
Hose clamp, 23 mm, spring band
700560-023
Hose clamp, 19 mm, spring band
700560-019
Hose clamp, 1½" (DN40) I.D.
700560-150
Hose clamp, 2" (DN50) I.D.
700560-200
Kit, drip tee, 304 stainless steel, 1½" (DN40)
191071-001
Humidistat, duct high limit, HC-201
405850-201
Humidistat, room, HC-101
405870
Humidity transmitter, duct, 2% RH DSB
405884-009
Humidity transmitter, room, 2% RH
405883-008
Switch, airflow, AFS-112-150, electric
406190
Kit, Y connector; Models XTS / XTP 033, 042, and 048 (see Figure 25-1)
• 1 Y connector, stainless steel, 1½" x 2" (DN40 x DN50)
• 2 steam hoses, 1½"(DN40), 12" (305 mm) long
191070-101
• 4 hose clamps
Kit, Y/tube connectors; Models XTP067 through 096 (see Figure 25-1)
• 2 Y connector kits
191070-101
• 1 flanged tube connector, stainless steel, 3" (DN80)
162825-202F
Kit, tube connector; Model XTP050 (see Figure 25-1)
• 1 tube connector, stainless steel, 1½" x 2" (DN40 x DN50)
• 1 hose cuff, 2" (DN50), 6" (152 mm) long
191070-002
• 2 hose clamps
Kit, tube reducer; Models XTS / XTP 002 through 006 (see Figure 24-1)
• 1 tube reducer, stainless steel, 1" x 1½" (DN25 x DN40)
• 1 steam hose, 1" (DN25), 12" (305 mm) long
191070-100
• 2 hose clamps
Kit, tube Y connector; Model XTS / XTP 025 (see Figure 24-1)
• 1 Y connector, 1.5" x 1.5" x 1.5"(DN40 x DN40 x DN40)
• 1 steam hose, 1.5" (DN40), 12" (305 mm) long
191070-102
• 2 hose clamps
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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66
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
67
WARRANTY
Expect quality from the industry leader
Two-year Limited Warranty
For more than 45 years, DriSteem has been
leading the industry with creative and reliable
humidification solutions. Our focus on quality
is evident in the construction of the XT Series
humidifier. DriSteem also leads the industry
with a Two-year Limited Warranty and optional
extended warranty.
DriSteem 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.
For more information
www.dristeem.com
sales@dristeem.com
For the most recent product information
visit our Web site: www.dristeem.com
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.
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.
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 Corporation
An ISO 9001:2000 certified company
U.S. Headquarters:
14949 Technology Drive
Eden Prairie, MN 55344
800-328-4447 or 952-949-2415
952-229-3200 (fax)
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.
European office:
Marc Briers
Grote Hellekensstraat 54 b
B-3520 Zonhoven
Belgium
+3211823595 (voice)
+3211817948 (fax)
E-mail: marc.briers@dristeem.com
Extended warranty
Continuous product improvement is a policy of
DriSteem Corporation; therefore, product
features and specifications are subject to
change without notice.
Any extension of the Limited Warranty under this program must be in writing, signed by DriSteem,
and paid for in full by the purchaser.
DriSteem, Rapid-sorb, Ultra-sorb, 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.
© 2017 Research Products Corporation
Form No. XT-IOM-EN-0317
Part No. 890000-139 Rev E
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.
mc_051308_0630
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