Steam-to-Steam Humidifier

Steam-to-Steam Humidifier
STS
®
Steam-to-Steam Humidifier
Vapor-logic ® controller with:
• Web-enabled remote access
• Modbus ®, BACnet ®, and LonTalk ®
interoperability
• Ultra-sorb Model XV dispersion option
Chemical-free humidification steam
STS HUMIDIFIER
GA S
The STS steam-to-steam humidifier creates chemical-free humidification steam
using boiler steam as its energy source. It accomplishes this by using boiler steam
in its heat exchanger to vaporize clean fill water into humidification steam. It's
a closed-loop system, so no boiler steam or chemicals enter the humidified
space; they return to the boiler.
NO DIRECT INJECTION OF BOILER CHEMICALS
Another way to use boiler steam for humidification is to disperse it directly
into the air. However, humidifier owners are learning that chemically treated,
boiler-generated steam is unsuitable for direct injection humidification for the
following reasons:
Boiler water is usually treated with anticorrosion chemicals that
can contaminate spaces humidified by direct steam injection.
Airborne boiler chemicals have been found to irritate eyes and skin, and
to aggravate respiratory disorders. In addition, they accelerate the aging
of certain materials like paper and wood, an issue especially relevant to
museum owners.
To ensure chemical-free humidification while taking advantage of economical
on-site boiler steam, consider using an STS humidifier.
INTEROPERABILITY, WEB-ENABLED ACCESS WITH VAPOR-LOGIC CONTROL
STS humidifiers are now fully interoperable via Modbus or optional BACnet or
LonTalk. The Vapor-logic Web interface provides the capability to set up, view,
and adjust humidifier functions via Ethernet, either directly or remotely through
a network. See Page 3 for more information.
NO DISPERSION-GENERATED CONDENSATE WITH ULTRA-SORB MODEL XV
DriSteem's Ultra-sorb Model XV is an STS steam dispersion option, delivering
chemical-free humidification steam with no condensate loss. That's because
Ultra-sorb Model XV has a single header with an integral heat exchanger.
Boiler steam in the heat exchanger instantly flashes dispersion-generated
condensate back into humidification steam while returning pressurized
condensate to the boiler without additional pumps, valves, or controls.
2
STS HUMIDIFIER
The STS humidifier generates chemicalfree humidification steam. STS is designed
for use with tap or softened water and is
available with an option for RO/DI water
(water that has been treated using reverse
osmosis, or deionized water).
ELECTRICITY
HUMIDIFY USING AN ECONOMICAL ENERGY SOURCE
Vapor-logic controller
ACCURATE, RESPONSIVE CONTROL
The Vapor-logic controller provides accurate, responsive
RH control. PID control tunes the system for maximum
performance.
Web interface, a standard feature, enables remote,
simultaneous, secure access from anywhere, at any time.
Modbus, BACnet, and LonTalk allow interoperability with
multiple building automation systems (BAS).
Up-time optimizer keeps humidifiers operating through system faults, as long as
safety conditions are met, minimizing production down-time.
USB port on Vapor-logic allows easy software updates, and data backup and
restore capability.
Use the Vapor-logic keypad or the standard
Web interface, shown here, to control your
STS humidification system.
PID control provides accurate, responsive, and adjustable relative humidity control.
Real-time clock allows time-stamped alarm and message tracking, and accurate
drain and flush scheduling.
Tank temperature sensor, mounted on the evaporating chamber, allows overtemperature protection, freeze protection, and tank preheating, allowing rapid
response to a call for humidity.
Auxiliary temperature sensor/transmitter allows temperature compensation
control to prevent window condensation, or air temperature monitoring, such
as in a duct.
Programmable outputs allow remote signaling or device activation, and are
easily configured during the setup process.
Insert a USB flash drive into
the Vapor-logic board’s USB
port to perform software
updates, download data
logs, and back up and
restore data.
Multiple-humidifier control allows staged control of up to 16 humidifiers with
one controller.
Enhanced diagnostics include:
• Test outputs function, using the keypad or Web interface to verify
component operation
• Test humidifier function, by simulating demand to validate performance
• Data collection of RH, air temperature, water use, energy use, alarms, and
service messages for viewing from the keypad or Web interface
Factory commissioning of humidifier and control board guarantees a reliable,
fast installation, minimizing field installation requirements. All units are
operated and tested — heating water in each tank — before shipping.
Preconfigured but easily changed. Just go into the Setup menu to change a
factory setting if, for example, a transmitter changes.
STS HUMIDIFIER
3
STS principle of operation
1 When the system is first activated, the fill valve opens, and the evaporating
chamber fills with water to the operating level.
2 On a call for humidity, boiler steam passes through the valve to the heat
exchanger, causing water in the evaporating chamber to boil. The fill valve
opens and closes as needed to maintain the operating water level.
3 During refill in tap/softened water systems, a portion of the surface water is
skimmed off, carrying away precipitated minerals.
Humidifiers with the DI/RO water option (using deionized water or water
that has been treated using reverse osmosis) do not require skimming.
4 Steam created in the evaporating chamber flows through steam hose,
tubing, or piping to the dispersion assembly, where it is discharged into the
airstream.
STS PRINCIPLE OF OPERATION
Tap/softened water model shown
1
Heat exchanger
2
4
3
OM-938A
4
STS HUMIDIFIER
STS components
1 Vapor-logic controller
(keypad and web interface not shown)
Vapor-logic controls all humidifier functions as a stand-alone controller or
integrated into a Modbus, BACnet, or LonTalk system.
2 Water level control
Tap or softened water systems control water levels electronically using a
three-rod probe. DI/RO water systems control water levels using a float
valve and a low-water cutoff switch.
3 Drain
Tap/softened water humidifiers are programmed to automatically drain
if there is no call for humidity after a user-defined time period (72-hour
default).
Humidifiers with the DI/RO water option have a manual drain unless
ordered with an electric drain to enable automated end of season draining.
STS COMPONENTS
Tap/softened water model shown
8
6
2
9
7
4
3
1
5
OM-7643
STS HUMIDIFIER
5
STS features and benefits
Table 6-1:
STS humidifier features and benefits
Reliable
• Control RH to ±3% of set point; control to ±1% of set point with available options for specific applications. Consult DriSteem
for recommendations.
• Electronically monitored water level ensures continuous, safe operation.
• Closed-loop system results in less wear on the boiler — no need to chemically treat make-up water for humidification.
Efficient
• Utilizes energy from existing plant steam.
• Most energy-efficient means of producing chemical-free steam with pressurized steam as the energy source.
Flexible
• Easy retrofit for steam injection humidifiers
• Broad capacity range from 10 to 1600 lbs/hr (4.5 to 726 kg/h), link up to 16 units for capacity up to 25,600 lbs/hr
(11,612 kg/h).
• Supports all fill water types: tap, softened, deionized, and reverse osmosis; easy field conversion if water type changes.
• Suitable for all dispersion options.
• Robust outdoor enclosure or weather cover options available for outdoor operation in any climate.
Easy to maintain
• Cleanout plate and removable cover provide access to heat exchanger and tank without removing steam dispersion piping.
• User-adjustable water skimmer eliminates floating minerals, while automatic drain and flush removes precipitated minerals;
softened fill water significantly reduces maintenance requirements.
• Heat exchanger sheds mineral buildup automatically.
• End-of-season autodrain.
Table 6-1:
STS humidifier models and capacities with copper heat exchangers
Steam pressure at connection to STS steam valve (valve provided by DriSteem)
STS models
5 psi (34 kPa)
10 psi (69 kPa)
13 psi (90 kPa)
15 psi (103 kPa)
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
25C
20
9
70
32
100
45
120
54
50C
50
23
150
68
200
91
240
109
100C
100
45
300
136
400
181
480
218
400C
300
136
580
263
720
327
790
358
800C
650
295
1275
578
1500
680
1600
726
mc_010411_1645
Table 6-2:
STS humidifier models and capacities with stainless steel heat exchangers
Steam pressure at connection to STS steam valve (valve provided by DriSteem)
STS models
5 psi (34 kPa)
10 psi (69 kPa)
15 psi (103 kPa)
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
25S
10
5
25
11
30
14
35
16
50S
30
14
55
25
75
34
80
36
100S
60
27
110
50
140
64
150
68
200S
150
68
290
132
360
163
390
177
400SNC
170
77
392
178
552
250
637
289
800SNC
212
96
825
374
1095
497
1223
555
mc_010411_1645
For use with tap/softened or RO/DI water:
• STS models ending in C (copper heat exchangers with a nickel coating)
• STS models ending in S (stainless steel heat exchangers with a Teflon coating)
For use with RO/DI water option only:
STS models ending in SNC (stainless steel heat exchangers with no coating)
6
13 psi (90 kPa)
lbs/hr
STS HUMIDIFIER
STS weights
ULTRA-SORB MODEL XV
Table 7-2:
STS weights
Shipping weight
STS model
Operating weight*
lbs
kg
lbs
kg
25
95
43
175
79
50
125
57
336
152
100
139
63
350
159
200
245
111
850
386
400
320
145
950
431
800
413
186
1450
658
* Operating weight does not include weight of interconnecting piping
provided by Installer.
mc_010411_1647
Ultra-sorb Model XV disperses STSgenerated humidification steam with no
condensate loss.
• Zero water waste from condensate loss
• High-efficiency tubes and insulated
header provide up to 85% reduction in
wasted energy
• Steam capacity up to 450 lbs/hr (204
kg/h) per dispersion panel when used
with STS
• Dispersion option for all STS models
STS HUMIDIFIER
7
STS mounting options
SUPPORT LEGS, STS MODEL 25, 50 AND 100 ONLY
OUTDOOR ENCLOSURE
TAP/SOFTENED WATER MODEL SHOWN
Optional set of four legs
and hardware
OM-933
mc_010511_1740-tap
Install an STS humidifier virtually anywhere.
This prepackaged, factory-installed unit ships
complete to the job site, ready for easy-toconnect water and electrical connections.
The STS outdoor enclosure option comes
with the control cabinet mounted on the
humidifier.
WALL BRACKETS, STS MODEL 25, 50, AND 100 ONLY
TAP/SOFTENED WATER MODEL SHOWN
Table 8-2:
Clearances
A
A
STS model
25 and 50
100
B
inches
mm
inches
15.5
394
24
610
21
533
30
762
B
DriSteem
optional wall brackets
(two required)
DC-1454
mc_010511_1741-tap
RECOMMENDED CLEARANCES
* Minimum access clearance of 18" (457 mm) recommended for periodic
removal of top cover for access to tank.
Left side:
36" (914 mm) with
mounted control
cabinet.
6"(152 mm) without
mounted control
cabinet
Top: 18" (457 mm)*
Rear: 6"
(152 mm)
TAP/SOFTENED
WATER MODEL
SHOWN
Front:
36" (914 mm)
Right
side:
6" (152 mm)
Bottom:
24" (610 mm)
DC-1452
mc_010511_1742-tap
8
STS HUMIDIFIER
mm
STS mounting
H-LEGS, STS MODELS 200, 400, AND 800 ONLY
Table 9-1:
STS mounting options
TAP/SOFTENED WATER MODEL SHOWN
STS model
Uninsulated
25, 50, 100
200, 400,
800
Trapeze
hanger
standard
----
H-legs
---
standard
Support legs
optional
---
Wall brackets
optional
----
Mounting
method
Due to size and weight, STS models
200, 400, and 800 must be
mounted on H-legs.
OM-947
mc_010511_1744-tap
TRAPEZE HANGER, STS MODELS 25, 50, AND 100 ONLY
TAP/SOFTENED WATER MODEL SHOWN
See Note 1
Provide 18" (457 mm)
minimum clearance above
cover
See Note 2
See Note 3
See Note 4
1¼" (DN32) minimum
See Note 5
25%
larger than
humidifier
Notes:
1. Secure rods to overhead construction.
2. 3/8" (M10) threaded rod of length required.
3. Angle or channel sized to properly support humidifier.
4. Humidifier drain to appropriate building waste. Do not drain humidifier
directly into drip pan. Install water seal as shown on Pages 13 through
16.
5. Drip pan (by installer) recommended in overhead installations to prevent
possible water damage to equipment below.
DC-1453
mc_010511_1743-tap
STS HUMIDIFIER
9
STS connection sizes
4 Water skimmer/overflow port
In tap/softened water systems, the water skimmer reduces surface minerals
in the evaporating chamber. Skimming occurs each time the humidifier fills.
The skim time duration is user-adjustable.
WATER LEVEL CONTROL FOR TAP/
SOFTENED WATER HUMIDIFIER
Fill valve closes when
water level rises to this
probe.
In systems with the DI/RO water option, skimming is not required; the
skimmer port functions as an overflow port.
5 Steam valve
Fill valve opens when
water level is below this
probe.
Upon a call for humidity, the steam valve allows boiler steam to enter the
heat exchanger.
Low-water cutoff. Power
to heaters is cut if water
level drops below this
probe (if steam to STS
heat exchanger is
controlled by Vaporlogic).
6 Heat exchanger
The heat exchanger transfers energy from boiler steam to the clean fill water
in the evaporating chamber, generating chemical-free humidification steam.
The STS is available with either copper or stainless steel heat exchangers.
7 Temperature sensor
Mounted on the evaporating chamber, this sensor enables:
• Freeze protection
• Preheating, allowing rapid response to a call for humidity
VLC-OM-030
mc_030910_1335-STS
Humidifiers using tap or softened water
control water levels electronically using a
three-rod probe. The controller responds
with the above actions when the water level
reaches each rod.
• Over-temperature protection
8 Service access
The cover allows periodic inspection and servicing of the evaporating
chamber without removing steam hose, tubing, or piping. The cleanout
plate allows side access to the heat exchanger and tank floor.
9 Steam outlet
Steam generated in the humidifier rises through the steam outlet and travels
to the dispersion assembly through steam hose, tubing, or piping.
WATER LEVEL CONTROL FOR DI/RO
WATER OPTION HUMIDIFIER
Fill valve
Float rod
Float ball
VLC_OM_026
Humidifiers using DI/RO water control
water levels using a float valve. An optional
low-water cutoff switch is available as a
remote water indicator.
10
STS HUMIDIFIER
STS dimensions
DIMENSIONS, STS MODELS 25, 50, 100, 200, AND 400 (WITH COPPER OR STAINLESS STEEL HEAT EXCHANGERS)
FRONT VIEW
SIDE VIEW
Mounting holes:
Models 25–100: 5/16" (8 mm) slot
Models 200 & 400: 1/2" (12 mm) slot
L
J
K
M
A
D
E
H
C
B
OM-931
OM-932
mc_010511_1012-tap
Notes:
• Tap/softened water model shown
• See dimensions in Tables 12-1 and 12-2
DIMENSIONS, STS MODEL 800 (WITH COPPER OR STAINLESS STEEL HEAT EXCHANGERS)
FRONT VIEW
SIDE VIEW
L
M
Mounting hole:
1/2" dia.
(12 mm) slot
J
K
F
A
G
D
E
H
C
OM-936
B
Notes:
• Tap/softened water model shown
• See dimensions in Tables 12-1 and 12-2
mc_010511_1013-tap
STS HUMIDIFIER
11
STS dimensions
Table 12-1:
Dimensions, STS with copper heat exchangers
STS model*
Description
See drawings on page 11
25C
50C
100C
400C
800C
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
A
Height**
19.50
495
19.50
495
19.5
495
19.5
495
29.75
756
B
Width
14.75
375
14.75
375
19.25
489
30.25
768
30.25
768
C
Length
23.65
600
39.65
1007
39.65
1007
55.15
1401
55.15
1401
D
Bottom to supply inlet of first heat exchanger
6.63
168
6.63
168
6.63
168
6.63
168
6.63
168
E
Bottom to return outlet of first heat exchanger
3.63
92
3.63
92
3.63
92
3.63
92
3.63
92
F
Bottom to supply inlet of second heat exchanger
---
---
---
---
---
---
---
---
14.28
363
G
Bottom to return outlet of second heat exchanger
H
Side the heat exchanger
J
Pressurized steam supply inlet
¾" pipe
DN20
thread
K
Pressurized steam return outlet
¾" pipe
¾" pipe
DN20
DN20
thread
thread
L
Side to steam outlet
6.25
159
8.63
M
Front to steam outlet
2.50
64
2.25
---
---
---
---
---
---
---
---
11.24
285
3.25
83
3.25
1¼"
pipe
thread
83
83
330
3.25
1½
pipe
thread
1¼"
pipe
thread
13.00
83
245
3.25
1½"
pipe
thread
1¼"
pipe
thread
13.00
83
219
3.25
1¼"
pipe
thread
1¼"
pipe
thread
9.63
57
2.75
70
3.75
95
3.75
DN32
DN32
DN32
DN40
DN32
DN40
DN32
330
95
* C, S, and SNC in model numbers are explained in Table 6-2.
** Add 23.5" (597 mm) to overall height when STS is mounted on four support legs. Add 22.5" (572 mm) to overall height when STS is mounted on two H-legs.
mc_010511_1010
Table 12-2:
Dimensions, STS with stainless steel heat exchangers
STS model*
Description
See drawings on page 11
25S
50S
100S
200S
400SNC
800SNC
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
A Height**
19.50
495
19.50
495
19.5
495
19.50
495
19.50
495
29.75
756
B
Width
14.75
375
14.75
375
19.25
489
30.25
768
30.25
768
30.25
768
C Length
23.65
600
39.65 1007 39.65 1007 55.15 1401 55.15 1401 55.15 1401
D Bottom to supply inlet of first heat exchanger
6.85
174
6.85
174
6.85
174
6.85
174
6.85
174
6.85
174
E
Bottom to return outlet of first heat exchanger
3.35
85
3.35
85
3.35
85
3.35
85
3.35
85
3.35
85
F
Bottom to supply inlet of second heat exchanger
---
---
---
---
---
---
---
---
---
---
14.5
368
G Bottom to return outlet of second heat exchanger
---
---
---
---
---
---
---
---
---
---
11.0
279
H Side the heat exchanger
J
Pressurized steam supply inlet
K
Pressurized steam return outlet
L
Side to steam outlet
M Front to steam outlet
3.25
83
3.25
83
3.25
83
3.25
83
3.25
83
3.25
83
¾"
1"
1"
1½"
1½"
1½
pipe DN20 pipe DN25 pipe DN25 pipe DN40 pipe DN40 pipe DN40
thread
thread
thread
thread
thread
thread
¾"
¾"
¾"
¾"
¾"
¾"
pipe DN20 pipe DN20 pipe DN20 pipe DN20 pipe DN20 pipe DN20
thread
thread
thread
thread
thread
thread
6.25 159 8.63 219 9.63 245 13.00 330 13.00 330 13.00 330
2.50
64
2.25
57
2.75
70
3.75
95
3.75
95
3.75
* C, S, and SNC in model numbers are explained in Table 6-2.
** Add 23.5" (597 mm) to overall height when STS is mounted on four support legs. Add 22.5" (572 mm) to overall height when STS is mounted on two H-legs.
mc_010511_1010
12
STS HUMIDIFIER
95
STS piping: Tap/softened water, one heat exchanger
FIELD PIPING OVERVIEW FOR TAP/SOFTENED WATER STS MODELS 25, 50, 100, 200, AND 400
Water supply shut-off valve (by installer)
If water piping to humidifier is nonmetallic, we
recommend a 2" (50 mm) metallic water seal or loop in
the supply line to isolate steam during maintenance
3/4" pipe thread (DN20) dispersion unit condensate
return inlet*
Water supply line (see Table 14-1);
water pressure range 25 to 80 psi (172 to 582 kPa);
water conductivity 30 μS/cm minimum
Optional condensate
Unions (by installer)
return piping from
Vacuum breaker
nonpressurized steam
(by installer)
dispersion unit*
Shock arrester recommended to reduce water hammer (by
installer)
Steam outlet
Install level
Strainer
Air vent tube
6"
(152 mm)
minimum
* Condensate return
piping is not needed for
Ultra-sorb® Model XV
dispersion unit, which
returns pressurized
condensate to the boiler.
See the Ultra-sorb Model
XV Installation Guide
for condensate piping
requirements.
H2 (see
Table
13-1)
Install level
From steam
source
Trap
Condensate return
to nonpressurized
system, by gravity
only
3/4" (DN20) minimum
condensate drain piping
rated for 212 °F (100 °C)*
12"
(305 mm)
minimum
drop to
trap
Electric drain valve
Pit
c
(1% h 1/
Ov
erfl
If run is over 10' (3 m),
) to 8"/
ow
wa ft
rd
lin increase pipe to 1¼" (DN32)
e
dra
H1(see
Water seal line
in
Table
MUST be below
13-1)
drain valve to ensure
humidifier drains
correctly
Drain, skim,
1" (25 mm) air gap
overflow piping
rated for 212 °F
(100 °C)
(see sizes in Table
14-1)
Open floor drain.
See first note below.
Notes:
• Offset humidifier from floor drain to prevent flash steam from rising into the humidifier.
• 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.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from
tank. No additional backflow prevention is required; however, governing codes prevail.
mc_010411_1556-tap
DC-1451
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
• Dashed lines indicate provided by installer.
Table 13-1:
Height required to overcome humidifier internal pressure (H1, H2)
Water seal height (H1)
Air vent height (H2)
Unit output
STS models
All STS models
25, 50, 100, 200, 400
800
lbs/hr
kg/h
inches
mm
inches
mm
inches
mm
≤138
≤62
12
305
27
686
----
----
139-183
63-83
15
381
30
762
>183
>83
18
457
33
838
42.25
10.73
mc_010611_0730
STS HUMIDIFIER
13
STS piping: tap/softened water, two heat exchangers
FIELD PIPING OVERVIEW FOR TAP/SOFTENED WATER STS MODEL 800
3/4" pipe thread (DN20) dispersion unit condensate
return inlet*
Shock arrestor (by installer) recommended to
eliminate water hammer
Steam outlet
Water supply shut-off valve (by installer)
Install level
Water supply line (see Table 14-1);
water pressure range 25 to 80 psi (172
to 582 kPa); water conductivity 30 μS/cm
minimum
Unions (by installer)
Optional condensate Vacuum breakers (by
return piping from
installer)
nonpressurized steam
Install level
Strainers
dispersion unit*
Ov
(by installer)
lin erflo
e
Air vent tube
w
Pit
From
c
Electric drain valve
(1% h 1
steam
) to /8"
If run is over 10' (3 m), increase
/
w
Traps
f
source
ard t
H1(see
pipe to 1¼" (DN32)
6" (152 mm)
d
rai
Table
n
H2
(see
Table
minimum
Water seal line MUST be
13-1)
13-1)
* Condensate return piping is not
12"
below drain valve to ensure
needed for Ultra-sorb® Model
(305 mm) Drain, skim,
humidifier drains correctly
Condensate return
1" (25 mm) air gap
XV dispersion unit, which
minimum overflow piping
to nonpressurized
returns pressurized condensate
drop to rated for 212 °F
Open floor drain.
system, by gravity only
(100 °C)
to the boiler. See the Ultra-sorb
traps
See first note below
3/4" (DN20)
(see sizes in
Model XV Installation Guide for
minimum condensate drain piping
Table 14--1)
condensate piping requirements.
rated for 212 °F (100 °C)*
Notes:
• Offset humidifier from floor drain to prevent flash steam from rising into the humidifier.
• 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.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from tank. No
additional backflow prevention is required; however, governing codes prevail.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
• Dashed lines indicate provided by installer.
mc_010411_1550-tap
DC-1467
Table 14-1:
STS connection sizes
Description
Connection size
Water makeup (fill)
¼" pipe thread (DN8), all STS models
Drain
¾" (DN20) for STS models 25 through 100
1" (DN25) for STS models 200 through 800
Steam outlet
Varies with capacity and dispersion type; see Table 17-1
Condensate return
¾" pipe thread (DN20)
Pressurized steam supply inlet and return outlet
See sizes in Tables 12-1 and 12-2.
mc_01011_1555
14
STS HUMIDIFIER
STS piping: DI/RO water option, one heat exchanger
FIELD PIPING OVERVIEW FOR STS MODELS 25, 50, 100, 200, AND 400 WITH DI/RO WATER OPTION
Water supply line (see Table 16-1);
water pressure range 25 to 80 psi (172 to 582 kPa);
first 3' (1 m) of supply line must be rated for 212 °F
(100 °C)
If water piping to humidifier is nonmetallic, we
recommend a 2" (50 mm) metallic water seal or
loop in the supply line to isolate steam during
maintenance
3/4" pipe thread (DN20)
Optional condensate
dispersion unit condensate
return piping from
return inlet*
nonpressurized steam
Unions (by installer)
dispersion unit*
Vacuum
breaker (by
Air vent tube
installer)
6"
(152 mm)
minimum
* Condensate return piping
is not needed for Ultrasorb® Model XV dispersion
unit, which returns
pressurized condensate to
the boiler. See the Ultrasorb Model XV Installation
Guide for condensate
piping requirements.
H2 (see
Table
15-1)
Steam outlet
Install level
Strainer
From
steam
source
Trap
Condensate return
to nonpressurized
system, by gravity
only
3/4" (DN20) minimum
condensate drain piping
rated for 212 °F (100 °C)*
Install level
Manual SST drain valve (electric drain valve
available for end-of-season drain option)
Pit
c
Ov
(1% h 1
If run is over 10' (3 m),
/
) to 8" line erflo
w
wa /ft
increase pipe to 1¼" (DN32)
rd
dra
H1 (see
12"
Water seal line
in
Table
(305 mm)
MUST be below
15-1)
minimum
drain valve to ensure
drop to
humidifier drains
trap
correctly
Drain, skim, overflow
1" (25 mm) air gap
piping rated for 212 °F
Open floor drain.
(100 °C)
See first note below.
(see sizes in Table
16-1)
DC-1459
mc_010411_1556-di
Notes:
• Offset humidifier from floor drain to prevent flash steam from rising into the humidifier.
• 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.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from tank. No
additional backflow prevention is required; however, governing codes prevail.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
• Dashed lines indicate provided by installer.
Table 15-1:
Height required to overcome humidifier internal pressure (H1, H2)
Water seal height (H1)
Air vent height (H2)
Unit output
STS models
All STS models
25, 50, 100, 200, 400
800
lbs/hr
kg/h
inches
mm
inches
mm
inches
mm
≤138
≤62
12
305
27
686
----
----
139-183
63-83
15
381
30
762
----
----
>183
>83
18
457
33
838
42.25
10.73
mc_010611_0730
STS HUMIDIFIER
15
STS piping: DI/RO water option, two heat exchangers
FIELD PIPING OVERVIEW FOR STS MODEL 800 WITH DI/RO WATER OPTION
Water supply line (see Table 16-1);
water pressure range 25 to 80 psi (172 to
582 kPa);
Steam outlet
Install level
If water piping to humidifier is nonmetallic, we
recommend a 2" (50 mm) metallic water seal or loop
in the supply line to isolate steam during maintenance
Optional condensate return
piping from nonpressurized
steam dispersion unit*
Air vent tube
Unions (by installer)
Strainer (by installer)
Vacuum breakers (by
installer)
Strainers
(by
installer)
From
steam
source
6"
(152 mm) H2 (see Table
minimum 16-1)
* Condensate return piping is
Traps
not needed for Ultra-sorb®
Condensate return
Model XV dispersion unit,
to nonpressurized
which returns pressurized
system, by gravity only
condensate to the boiler.
See the Ultra-sorb Model
3/4" (DN20)
XV Installation Guide
minimum condensate drain piping
for condensate piping
rated for 212 °F (100 °C)*
requirements.
3/4" pipe thread (DN20)
dispersion unit condensate
return inlet*
Install level
Ov
lin erflo
e
w
Manual SST drain valve (electric drain
valve available for end-of-season drain
option)
If run is over 10' (3 m), increase
pipe to 1¼" (DN32)
Pit
c
(1% h 1/
)
tow 8"/ft
H1 (see
ard
Table
dra
16-1)
in
12"
(305 mm)
minimum
drop to
traps
Drain, skim,
overflow
piping rated
for 212 °F
(100 °C)
(see sizes in
Table 16-1)
Water seal line MUST be
below drain valve to ensure
humidifier drains correctly
1" (25 mm) air gap
Open floor drain.
See first note below
DC-1468
mc_010411_1550-di
Notes:
• Offset humidifier from floor drain to prevent flash steam from rising into the humidifier.
• 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.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from tank. No
additional backflow prevention is required; however, governing codes prevail.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
• Dashed lines indicate provided by installer.
Table 16-1:
STS connection sizes
Description
Connection size
Water makeup (fill)
¼" pipe thread (DN8), all STS models
Drain
¾" (DN20) for STS models 25 through 100
1" (DN25) for STS models 200 through 800
Steam outlet
Varies with capacity and dispersion type; see Table ?-1
Condensate return
¾" pipe thread (DN20)
Pressurized steam supply inlet and return outlet
See sizes in Tables ?-1 and ?-2.
mc_01011_1555
16
STS HUMIDIFIER
Interconnecting steam hose, tubing, and pipe
Table 17-1:
Maximum steam carrying capacity and length of interconnecting steam hose, tubing, and pipe*
Copper or stainless steel tubing
and Schedule 40 steel pipe
DriSteem steam hose†††
Hose I.D.
Maximum capacity
Maximum length**
Tube or pipe size***
Maximum capacity
Maximum developed
length†
inches
DN
lbs/hr
kg/h
ft
m
inches
DN
lbs/hr
kg/h
ft
m
2
50
250
113
10
3
2
50
220
100
30
9
3††
50††
450
204
80
24
4††
80††
750
340
100
30
5††
100††
1400
635
100
30
6††
125††
2300
1043
100
30
*
Based on total maximum pressure drop in hose, tubing, or pipe of 5" wc (1244 Pa).
** Maximum recommended length for steam hose is 10' (3 m). Longer distances can cause kinking or low spots.
*** To minimize loss of capacity and efficiency, insulate tubing and pipe.
†
Developed length equals measured length plus 50% of measured length to account for pipe fittings.
††
Requires flange connection.
†††
When using steam hose, use DriSteam steam hose for best results. Field-supplied hose may have shorter life and may cause foaming in the evaporating chamber
resulting in condensate discharge at the dispersion assembly. Do not use steam hose for outdoor applications.
mc_091410_1050-STS
STS HUMIDIFIER
17
STS steam outlet connections
2-INCH HOSE CONNECTION
Table 18-1:
STS steam outlet sizes and types
Steam hose
Hose clamp
Pipe
thread
size
Hose
size
Flange size
2"
(DN50)
2"
(DN50)
3"
4"
5"
6"
(DN80) (DN100) (DN125) (DN150)
25
X
X
50
X
X
X
X
100
X
X
STS
model
Tap/softened
water model
shown
X
X
200
X
X
X
X
400
X
X
X
X
X
X
X
800
Steam
outlet
connection
(tubing)
DC-1455
mc_010511_1748-tap
2-INCH THREADED PIPE CONNECTION
mc_010611_1100
Dashed lines indicate provided by installer
* Support pipe from above to prevent
excessive weight on humidifier
outlet. Allow for thermal expansion.
Threaded pipe*
Pipe union
FLANGE CONNECTION
Steam outlet
connection (threaded
pipe nipple)
Dashed lines indicate provided by installer
Support member
Tap/softened
water model
shown
Support piping from
above to prevent
excessive weight on
humidifier outlet. Allow
for thermal expansion.
DC-1456
mc_010511_1747-tap
2-INCH TUBING OR HARD PIPE
CONNECTION USING HOSE CUFF WITH
CLAMPS
Dashed lines indicate provided by installer
Tubing or pipe
Hose
clamps
Steam outlet connection (flange)
6" (152 mm)
long hose cuff
Steam outlet
connection
(tubing)
Tap/softened
water model
shown
Tap/softened
water model
shown
DC-1456
mc_010511_1746-tap
DC-1458
mc_010511_1745-tap
18
STS HUMIDIFIER
STS weather cover
The optional STS weather cover is water-resistant and designed to protect an
STS humidifier from rain and sun. The STS weather cover option comes with the
control cabinet mounted on the humidifier. This weather cover has been tested
and approved by ETL Testing Laboratories, Inc., and is listed to UL Standard
1995 and certified to CAN/CSA Standard C22.2 No. 236.
WEATHER COVER EXPLODED VIEW
Panel
Panel
Panel
Panel
Hinged
door
Hinged door
OM-7466
mc_012511_1606
WEATHER COVER DIMENSIONS
Table 19-2:
Weather cover weights
B
C
Weather cover size
A
lbs
kg
STS 25 to 100
425
193
STS 200 to 800
550
250
mc_012511_1600
D
OM-7465
mc_012511_1607
Table 19-1:
STS dimensions
STS 25 to 100
STS 200 to 800
Description
inches
mm
inches
mm
A
Height
62
1575
66
1676
B
Length
43.5
1105
53
1346
C
Width
62
1575
78.25
1988
D
Distance from bottom
22
559
22
559
mc_012511_1605
STS HUMIDIFIER
19
STS outdoor enclosure
Outdoor humidifier operation in any climate is possible with the DriSteem
outdoor enclosure. The prepiped, factory-assembled unit ships complete to the
job site. Installation is a snap with curb or flush mounting options.
OUTDOOR ENCLOSURE CLEARANCES
Left side:
36"
(914 mm)
Top:
Keep open
Back:
12"
(305 mm)
Factory constructed and assembled. The outdoor enclosure is shipped complete
with the humidifier preinstalled and tested. The humidifier is prepiped within
the enclosure with an integral water seal, ready for quick connection to water,
steam and electricity.
Install on the ground or on the roof. Outdoor enclosures are ideal for facilities
that have limited interior space.
Certified, tested and proven. In-house testing and numerous successful
installations have proven that the outdoor enclosure provides reliable operation
under extreme conditions.
Easy access for service. Steel enclosure doors provide full access to internal
components. The doors feature stainless steel hinges, and the latches operate
from outside and inside of the unit.
Protects in cold and hot climates. To ensure complete safety and operation in
all climates, the outdoor enclosure has supplemental heating and ventilating
systems that automatically maintain required operation conditions. DRI-STEEM
humidifiers housed in outdoor enclosures operate properly when outdoor
temperatures range from –40 °F to 122 °F (–40 °C to 50 °C).
Robust design. The outdoor enclosure is ruggedly built to completely protect
internal components. The enclosure is constructed of heavy-duty galvanized
steel and is fully insulated. Gaskets on doors ensure a tight seal.
TYPICAL ROOFTOP INSTALLATION OVERVIEW
Humidifier in outdoor
enclosure
Roof surface
Electrical
connections
Remote
Vapor-logic
keypad
20
STS HUMIDIFIER
Steam piping
Curb
Drain piping
Water piping
OM-7464
mc_012611_1545
Front:
36"
(914 mm)
Right side:
24"
(610 mm)
OM-955
mc_012611_1546
STS outdoor enclosure
OUTDOOR ENCLOSURE INSTALLATION DETAIL
Normally closed fill
valve (by factory)
Disconnect (by installer); see Detail A
Make-up water supply piping
(by installer) (See Note 2)
Open to drain
Vacuum breaker
(by installer)
Humidifier
120 V supply
Roof decking
120 V from unit
disconnect or
other source (See
Note 1)
Normally closed (fail
closed) min 3/8"
electric valve (by
installer)
Open drain
(See Note 4)
Domestic water, 80 psig
(582 kPa) maximum
Detail A
120 V
N
Drain line, min. 1½" electric
valve (See Note 3)
Optional water seal (P-trap) drain
line, min. 1½" (DN40) (See Note
Disconnect
3)
box
Normally open (fail open) min
1/2" electric valve (by installer)
HEATED BUILDING INTERIOR
Open drain
(See Note 4)
To valves
(by installer)
(See Note 1)
To STS
humidifier
OM-7558
Notes:
1. Insulate supply water piping to avoid dripping from condensation. To ensure that water does not remain in the fill line and freeze if there is
a loss of power, DriSteem recommends field installing additional valves upstream of the fill valve in a conditioned space. Power these valves
on the same circuit that supplies the STS (as shown above); if the power goes off, water drains out of the fill line to prevent freezing.
2. Ensure that water lines are protected from freezing conditions.
•
Install heat tracing and insulation on fill piping inside the outdoor enclosure.
•
In extreme or critical applications in which the unlikely event of a water leak could cause severe damage, DriSteem recommends a
thermostat with a remote sensor on the fill line to cut power to the STS and safety valves to stop fill water to the STS and drain the fill
piping when the temperature is below freezing.
3. DriSteem recommends copper or iron drain piping for outdoor enclosures. On a loss of power the tank water will drain, but not be cooled
by the Drane-kooler because of the field supplied safety shut-off valves. If it is critical to keep the Drane-kooler functional in the case of a
power loss, disconnect the Drane-kooler and relocate it down inside the conditioned space of the building. Pipe the supply water for the
Drane-kooler before the safety shut-off valves.
4. If copper or iron piping is used for both the fill and drain piping, these drains may be tied together. Locate 1" air gap only in spaces with
adequate temperature and air movement to absorb flash steam; otherwise, condensation may form on nearby surfaces. Refer to governing
codes for drain pipe size and maximum discharge water temperature.
mc_011311_1705
STS HUMIDIFIER
21
STS outdoor enclosure
OUTDOOR ENCLOSURE WITH STANDARD OR OPTIONAL STEAM OUTLET, ELEVATION VIEW
Standard steam outlet
K
Ventilation fans
Optional steam
outlet
STS humidifier
A
Power block
See Note 2
Knockouts, 4" (102 mm) on
center
Pipe chase
Enclosure drain 1½" pipe
thread (DN40) with male
nipple
G
L
mc_012511_1635
DC-1476
Notes:
1. The outdoor enclosure has two available steam distribution configurations. The standard configuration has a steam outlet on the right side of
the outdoor enclosure for connecting to steam dispersion unit piping. The optional internal steam distribution configuration routes steam within the
outdoor enclosure and down through the enclosure pipe chase into a building.
2. There are four knockouts located on the right and left side of the enclosure. Knockout sizes are 1½" (hole dia. 50 mm) for STS models 25-100,
and 2" (hole dia. 63.5 mm) for STS models 200-800. Run the electrical power into the enclosure at these knockouts.
3. All piping from the STS unit to the steam outlet is stainless steel pipe. Depending on the application, interconnecting piping from the steam outlet
to the dispersion assembly can be steam hose, tubing, or piping.
4. Install a riser trap in the branch line leading to the humidifier.
5. The preferred location for the STS steam control valve is inside the outdoor enclosure. If one of these valves must be located inside the building, it
must be located within 6' (1.8 m) of the humidifier to reduce pressure drop.
6. See the dimensions in Table 22-1.
Table 22-1:
Outdoor enclosure weights
Shipping weight*
Table 22-2:
Outdoor enclosure connection sizes
Operating weight*
STS Model
lbs
kg
lbs
kg
25-100
25
600
272
680
308
Water makeup ¼" pipe thread ¼" pipe thread
(fill)
(DN20)
(DN20)
50
625
284
840
381
Drain
100
640
290
860
390
Condensate
return
200
1050
476
1650
748
Steam outlet
400
1125
510
1750
794
mc_012611_1017
800
1225
556
2250
1021
*Includes humidifier
mc_012611_1016
22
STS Model
Description
STS HUMIDIFIER
¾" (DN20)
200-800
1" (DN25)
¾" pipe thread ¾" pipe thread
(DN20)
(DN20)
See Table 18-1.
STS outdoor enclosure
OUTDOOR ENCLOSURE, TOP VIEW
Valve access door:
• Models 25-100 have one access door
• Models 200-800 have two access
doors
E
C
Valve access door
J
Pipe chase extending 1" (25 mm)
above enclosure floor
D
Optional steam outlet
(exits enclosure through pipe chase)
F
H
Valve section heater
Intake ventilation fan
Enclosure drain
Control panel
Control panel heater
Standard steam outlet (exits enclosure here)
STS humidifier
Electrical and cleanout access
door
Intake ventilation fan
mc_012611_0837
DC-1478
B
Table 23-1:
Outdoor enclosure dimensions*
STS Model
Item
Description
25-100
200-800
inches
mm
inches
mm
A
Enclosure height
56.00
1422
66.00
1676
B
Enclosure width
36.00
914
46.00
1168
4.50
114
4.50
114
2.00
57
3.50
89
20.00
508
32.00
312
F
8.00
203
10.00
254
G
6.00
152
8.50
216
18.63
473
22.00
559
J
14.50
368
20.50
521
K
12.25
311
11.00
279
60.00
1524
78.00
1981
C
Pipe chase position
D
E
Pipe chase size
H
Steam pipe position
L
Enclosure length
* See drawings on pages 22-1 and 23-1.
mc_012611_1015
STS HUMIDIFIER
23
Drip-free dispersion basics and options
GUARANTEED NON-WETTING DISTANCES
DRISTEEM DISPERSION TUBES
Using data collected in our on-site test laboratories, we have developed
guaranteed steam absorption (non-wetting) distances, allowing you to
confidently choose equipment that will accommodate any application.
DRY STEAM
Adding humidification to an airstream without creating wetness in the duct
system is critical for the maintenance of a healthy environment. Wet areas
in ducts are a threat to the health of building occupants since they moisten
dust on duct floors, creating ideal breeding grounds for disease-producing
microbes. In addition, water accumulating in ducts can drip and cause
building damage.
STEAM EXITS DRIP-FREE THROUGH TUBELETS
All DriSteem evaporative dispersion tube units discharge steam through
thermal-resin tubelets fitted into dispersion tubes. These tubelets extend from
the center of the tube, where the steam is driest, through the tube wall, to
the duct airstream. In essence, the tubelets provide a temperature-neutral exit
tunnel for steam, allowing steam to cross over lower-temperature metal without
condensing or dripping. Each tubelet contains a calibrated orifice sized for
steam capacity. These tubelets are a DriSteem exclusive, and are essential for
drip-free steam dispersion.
CONDENSATE MANAGEMENT
Some condensation is inevitable in steam dispersion, but through careful
design condensate can be managed.
For example, Ultra-sorb® Models LV and LH use gravity to remove condensate.
Steam enters the supply header, exits through the tubelets, and condensate
drains out the return header. Ultra-sorb Model XV, available with STS®
humidifiers, has a heat exchanger that vaporizes dispersion-generated
condensate.
Rapid-sorb® dispersion units manage velocities to ensure condensate is not
pushed out into the air along with steam but drains out the opposite end of the
header.
REDUCE CONDENSATE, WASTED ENERGY WITH HIGH-EFFICIENCY TUBES
To significantly reduce condensate and wasted energy, use DriSteem's highefficiency tubes, which reduce dispersion-generated condensate and wasted
energy by up to 85%. See our High-Efficiency Tube option described in more
detail on Page 17.
24
STS HUMIDIFIER
DriSteem's dispersion tubes are fitted with
one or two rows of closely-spaced thermalresin tubelets to evenly disperse steam
across the airstream.
STS steam dispersion options
Ultra-sorb Model XV
ULTRA-SORB MODELS XV
Highest performance
Steam from
boiler
• Guaranteed, short non-wetting distances — install
within inches
of downstream devices
Steam from
STS humidifier
• Integral condensate management
– Heat exchanger vaporizes dispersion generated
condensate, creating condensate within the heat
exchanger, which returns to the boiler without
additional pumps, valves, vents, or controls
ULTRA-SORB MODELS LV
• Most efficient dispersion
– Zero water waste
All condensate returns to the boiler while still hot,
saving energy, water, and boiler chemicals
– Lowest heat gain
High-Efficiency Insulated Tubes and an insulated
steam
delivery header reduce airstream heat gain by up
to 85%
Capacity:
Up to 450 lbs/hr (204 kg/h) per panel
5 psi (35 kPa) minimum steam pressure
ULTRA-SORB MODEL LH
ULTRA-SORB MODELS LV AND LH
Most versatile
• Guaranteed, short non-wetting distances --- install within
inches of downstream devices
• Reduce wasted energy up to 85% and increase
capacity with optional High-Efficiency Dispersion Tubes
ULTRA-SORB MODEL LV WITH
HIGH-EFFICIENCY TUBES
• Lowest installation cost --- factory assembly for easy
installation
Capacity:
Up to 1850 lbs/hr (840 kg/h) per panel
HIGH-EFFICIENCY DISPERSION TUBES OPTIONS
For new and existing Ultra-sorb, Rapid-sorb, single
dispersion tube
• Highest efficiency
RAPID-SORB WITH HIGH-EFFICIENCY
TUBES
• Increases tube capacity up to 6 lbs/hr (2.7 kg/h)
• Up to 85% reduction in wasted energy, airstream heat
gain, and condensate production
• Plenum approved for in-duct installation
STS HUMIDIFIER
25
Calculating non-wetting distances
RAPID-SORB® DISPERSION TUBE SYSTEMS
RAPID-SORB DISPERSION TUBE SYSTEM
Multiple tubes, short non-wetting distance
• Short non-wetting distance, compared to single dispersion tube
• Horizontal or vertical airflows
• Install Rapid-sorb header inside or outside duct
• Available with high-efficiency dispersion tubes
Capacity: Up to 2100 lbs/hr (955 kg/h) per system
SINGLE DISPERSION TUBE
Installation flexibility
• Low-capacity dispersion for horizontal or vertical airflows.
• Available with high-efficiency dispersion tubes
Capacity: Up to 97 lbs/hr (38 kg/h)
SINGLE DISPERSION TUBE
AREA-TYPE FAN
Quiet steam dispersion for open spaces
• Mounts directly on top of GTS humidifier
Capacity: Up to 300 lbs/hr (136 kg/h)
AREA-TYPE FAN MOUNTED ON GTS
HUMIDIFIER
26
STS HUMIDIFIER
Ultra-sorb Model XV
ULTRA-SORB MODELS XV CONTROL CABINET
Table 27-1:
Ultra-sorb Model XV dimensions
Dimensions
12" (305 mm)
Inches (mm)
A Unit width
15" (380 mm) min,
147" (3735 mm) max,
in 1" (25 mm) increments
A' Face width
12" (305 mm) min,
144" (3660 mm) max,
in 1" (25 mm) increments
B Unit height*
21.75" (550 mm) min,
153.75" (3905 mm) max,
in 1" (25 mm) increments
B' Face height
12" (305 mm) min,
144" (3660 mm) max,
in 1" (25 mm) increments
C Frame depth
7.2" (183 mm)
D Frame enclosure
3.9" (99 mm)
E Header enclosure
5.85" (149 mm)
F Mounting flange
1.5" (38 mm)
12" (305 mm)
mc_101410_0820
OM-7533
6" (152 mm)
Notes:
• Electrical power requirements: 120 VAC, 0.2 Amps, or 240 VAC, 0.1
Amps
• Components are 24 VAC, powered by a transformer in the control
cabinet. A pneumatic interface is available for systems ordered with
pneumatic control.
• Maximum distance from control cabinet to Ultra-sorb Model XV is 50'
(15 m).
• 1" or 2" NPT (DN25 or DN50), determined
G Humidification steam by maximum steam capacity
inlet (internal thread) • 3" (DN80) flange, for humidification steam
from STS humidifier only
Note:
For more information about Ultra-sorb, see the Ultra-sorb catalog or
DriSteem’s Dri-calc software.
H Pressurized steam
3/4" NPT (DN20)
inlet (internal thread)
J Float switch,
optional header
overflow/access port
(internal thread)
1/2" NPT (DN15)
ULTRA-SORB MODELS XV DIMENSIONS
K Pressurized condensate 3/4" NPT (DN20)
outlet (internal thread)
• 1" (DN25)
• 2" (DN50)
(dimension
• 3" (DN80)
(dimension
L Overall width
Control cabinet
connection, same as dimension A;
connection, dimension A + 1"
A + 25 mm)
flange, dimension A + 6.5"
A + 165 mm)
Top view
C
A
D
See Figure 27-2.
Note:
* Panels with unit height more than 120" (3048 mm) have two-piece side
flanges and are shipped with brackets and panel fasteners for easy field
assembly. Panels with unit height more than 98" (2490 mm) are shipped
unassembled.
B’
B
mc_091608_1500
Table 27-2:
Ultra-sorb Model XV tube capacity*
G
lbs/hr
kg/h
43
19.5
H J
K
Header
A’
E
F
L
Note:
* If face height is <17" (432 mm), consult
DRI-STEEM or see Dri-calc for the correct calculation.
Connections
side view
Elevation view
Blank
side view
mc_101410_0755
OM-7483
STS HUMIDIFIER
27
Ultra-sorb Model LV
ULTRA-SORB MODEL LV DIMENSIONS
TOP VIEW
E
G
A'
Supply header
Dispersion tubes
G
E
Insulated
C
G
F
B
Table 28-1:
Ultra-sorb Model LV and LH tube
capacity*
kg/h
inches
DN
86
39
80
36
Notes:
* For Model LV, If face height is <26” (660 mm),
tube quantity per panel may need to increase to
compensate for reduced capacity of short tubes.
* For Model LH, if face width is <25” (635 mm),
tube quantity per panel may need to increase to
compensate for reduced capacity of short tubes.
Header
H
Consult DriSteem or see Dri-calc for the correct
calculation.
For more information about Ultra-sorb, see the
Ultra-sorb catalog or DriSteem's dri-calc software.
D
A
ELEVATION VIEW
lbs/hr
Header
B'
Condensate header
Uninsulated
E
SIDE VIEW
mc_010709_0710
OM-123
mc_062711_1425
Table 28-2
Ultra-sorb Model LH dimensions
A Unit width
15" (380 mm) min, 147" (3735 mm) max, in 1" (25 mm) increments
A’ Face width
12" (305 mm) min, 144" (3660 mm) max, in 1" (25 mm) increments
B Unit height
21" (530 mm) min, 156" (3960 mm) max, in 1" (25 mm) increments
Shipped unassembled by request or if unit height is more than 98" (2490 mm)
B’ Face height
12" (305 mm) min, 144" (3660 mm) max, in 1" (25 mm) increments
C Steam inlet diameter Determined by maximum steam capacity
D Condensate drain
3/4" pipe thread (DN20)
E Header enclosure
(front to back)
For 3" (DN80) and 4" (DN100) headers, E = 5" (127 mm); for 5" (DN125) header, E = 6" (152 mm); for 6" (DN150)
header, E = 7" (178 mm)
F Header enclosure
(top to bottom)
For 3" (DN80) header, F = 4.5" (114 mm); for 4" (DN100) header, F = 5.5" (140 mm); for 5" (DN125) header, F = 6.5" (165 mm);
for 6" (DN150) header, F = 7.5" (191 mm)
G Mounting flange
1.5" (38 mm)
H Condensate header
4.5" (114 mm)
enclosure
Note: Header dimensions are determined by capacity. See Table 28-1.
mc_050808_1215
28
STS HUMIDIFIER
Ultra-sorb model LH
ULTRA-SORB MODEL LH DIMENSIONS
TOP VIEW
E
Table 29-1:
Nonpressurized steam header capacities
Header capacity
Header diameter
F
A'
H
E
G
Dispersion tubes
C
B
lbs/hr
kg/h
inches
DN
300
135
3
80
600
270
4
100
1100
500
5
125
1850
820
6
150
G
B'
Notes:
Supply header
D
A
ELEVATION VIEW
G
D
•
When connected to a CRUV humidifier install
Ultra-sorb Model LH in vertical airflows only.
•
For more information about Ultra-sorb, see
the Ultra-sorb catalog or DriSteem's Dri-calc
software.
E
SIDE VIEW
OM-124b
mc_062711_1424
Table 29-2:
Ultra-sorb Model LH dimensions
A Unit width
21" (530 mm) min, 129" (3280 mm) max, in 1" (25 mm) increments
A’ Face width
12" (305 mm) min, 120" (3050 mm) max, in 1" (25 mm) increments
B Unit height
15" (380 mm) min, 123" (3125 mm) max, in 1" (25 mm) increments
Shipped unassembled by request or if unit height is more than 98" (2490 mm)
B’ Face height
12" (305 mm) min, 120" (3050 mm) max, in 1" (25 mm) increments
C Steam inlet diameter Determined by maximum steam capacity
D Condensate drain
3/4" pipe thread (DN20)
E Header enclosure
(front to back)
For 3" (DN80) and 4" (DN100) headers, E = 5" (127 mm); for 5" (DN125) header, E = 6" (152 mm); for 6" (DN150)
header, E = 7" (178 mm)
F Header enclosure
(top to bottom)
For 3" (DN80) header, F = 4.5" (114 mm); for 4" (DN100) header, F = 5.5" (140 mm); for 5" (DN125) header, F = 6.5" (165 mm);
for 6" (DN150) header, F = 7.5" (191 mm)
G Mounting flange
1.5" (38 mm)
H Condensate header
4.5" (114 mm)
enclosure
Note: Header dimensions are determined by capacity. See Table 29-1.
mc_062711_1430
STS HUMIDIFIER
29
Rapid-sorb dimensions
RAPID-SORB DIMENSIONS
A
E
1½" (DN40) dia.
dispersion tubes use slip
coupling
B
2" (DN50) dia. dispersion tubes
use hose cuff and clamps
Header outside duct
C
Pitch header toward drain
Escutcheon plate
F
OM-3005
D
Header inside duct or AHU
Note:
Add water seal to condensate drain as shown in the Dri-calc Installation Guides or the humidifier’s Installation,
Operation, and Maintenance manual.
Table 30-1:
Rapid-sorb capacities
Tube diameter
Table 30-2:
Rapid-sorb dimensions
Insulated (highefficiency tubes)
Uninsulated
Dimension Description
inches
DN
lbs/hr
kg/h
lbs/hr
kg/h
1½
40
43
19.5
40
18.2
2
50
80
36.4
77
35
Note:
* Capacities shown are for horizontal airflow. See
Dri-calc 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 Dri-calc for the correct
calculation.
Inches (mm)
12" (305) minimum
(3048) maximum in
increments
12" (305) minimum
(3048) maximum in
increments
to 120"
1" (25)
A
Face width
B
Face height
C
Steam inlet
Determined by humidifier
maximum capacity
D
Condensate drain
¾" pipe thread (DN20)
E
Distance from tube center to
4.5" (114) minimum
inside of duct or AHU wall
F
Distance from outside of duct
or AHU wall to end of
4.5" (114) minimum
Rapid-sorb leader
to 120"
1" (25)
Note:
All Rapid-sorb units are custom-sized and field-assembled to fit the duct
or air handler. Consult DriSteem for sizes larger or smaller than those
listed above.
30
STS HUMIDIFIER
Single dispersion tube
SINGLE DISPERSION TUBE WITHOUT AND WITH CONDENSATE DRAIN
WITHOUT DRAIN
Dispersion tube pitch
2"/ft (15%)
Hose, tubing
or pipe pitch:
See Notes
Dristeem
steamgenerating
humidifier
4.5" (114 mm)
minimum from top
of duct
Single dispersion tube without condensate drain:
Recommended pitch toward humidifier for
interconnecting hose, tubing or pipe:
• Vapor hose: 2" per ft (15%)
• Tubing or pipe: 1/8” per ft (1%)
WITH DRAIN
4.5" (114 mm) minimum from top of duct
Hose, tubing or pipe pitch:
See Notes
6"
(152 mm)
DriSteem
steamgenerating
humidifier
Dispersion tube pitch 1/8”/ft (1%)
4.5" (114 mm) minimum
from bottom of duct
5" (127 mm)
Condensate
drain. Pitch
¼"/ft (2%)
1" (25 mm) air gap
Single dispersion tube with condensate drain:
Recommended pitch toward humidifier for
interconnecting hose, tubing or pipe:
• Vapor hose: 2” per ft (15%)
• 1½" tubing or pipe: ½" per ft (5%)
• 2" tubing or pipe: ¼” per ft (2%)
VLC-OM-19-m
VLC-OM-18-m
Table 31-1:
Single dispersion tube capacities
Insulated
(High-Efficiency Tubes)
Tube size
Without drain
Uninsulated
With drain
Without drain
With drain
inches
DN
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
1½
40
29
13.2
65
29.5
28
12.7
62
28.2
2
50
65
29.5
97
44.1
62
28.2
93
42.3
Note:
Single dispersion tube available with face width between 6" (152 mm) up to 120" (3048 mm) in 1" (25 mm) increments.
* If face width is <19" (483 mm), tube capacity may be reduced. Consult DriSteem or see Dri-calc for the correct capacity.
mc_121311_1337
STS HUMIDIFIER
31
DRI-STEEM Corporation
A subsidiary of Research Products 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)
European office:
Marc Briers
Grote Hellekensstraat 54 b
B-3520 Zonhoven
Belgium
+3211823595 (voice)
+3211817948 (fax)
E-mail: marc.briers@dristeem.com
Continuous product improvement is a policy
of DriSteem Corporation; therefore, product
features and specifications are subject to
change without notice.
DriSteem, Dri-calc, Rapid-sorb, STS, Ultra-sorb,
and Vapor-logic are registered trademarks of
Research Products Corporation and are filed
for trademark registration in Canada and the
European community.
Drane-kooler is a trademark 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.
© 2015 Research Products Corporation
Form No. STS-CAT-EN-1015
EXPECT QUALITY FROM THE INDUSTRY LEADER
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 DriSteem Evaporative Cooling Systems.
DriSteem leads the industry with a Two-year Limited Warranty and
optional extended warranty.
For more information
www.dristeem.com
sales@dristeem.com
For the most recent product information visit our website:
www.dristeem.com
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising