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AS150 Steam Humidifier
with Steam Dispersion Unit
Installation, Operation, and Maintenance Manual
ii ANDEN AS150 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING
Attention installer
Read this manual before installing, and leave this manual with product owner. This product must be installed by qualified
HVAC and electrical contractors. Installation must be code approved. Improper installation can cause property damage,
severe personal injury, or death as a result of electric shock, burns, or fire.
Anden Technical Support: 800-972-3710
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 28 before performing service or maintenance procedures on any part of the
system.
Warnings and cautions
WARNING CAUTION
Indicates a hazardous situation that could result in death or
serious injury if instructions are not followed.
Indicates a hazardous situation that could result in damage to or
destruction of property if instructions are not followed.
WARNINGS AND CAUTIONS
iii
ANDEN AS150 SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
CAUTION
Follow steam piping recommendations
Controlling condensate flow and collection in an Anden AS150 Series humidifier system is critical to maximize performance.
Failure to follow the steam piping recommendations in this manual can cause system pressure fluctuations and increase cylinder
pressure, steam velocity, and condensate noise.
Hot discharge water
Discharge water can be as hot as 212 °F (100 °C) and can damage some drain plumbing materials not rated for hot drain
water. To prevent such damage, make sure drain water tempering is selected, and supply water is not heated. Do not shut off
supply water to the cylinder before it is drained.
Excessive supply water pressure
Supply water pressure greater than 80 psi (550 kPa) can cause the humidifier to overflow.
WARNING
Electrical shock hazard
If the humidifier starts up responding to a call for humidity during maintenance, severe personal injury or death from
electrical shock could occur. To prevent such start-up, follow the shutdown procedure on Page 28.
Warnings and cautions
iv ANDEN AS150 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table of contents
WARNINGS AND CAUTIONS ...................................................ii
PRODUCT OVERVIEW ........................................................2
SPECIFICATIONS .............................................................4
Dimensional drawings, capacities, line currents, and fusing ...........4
Dimensions and weights ...................................5
Dispersion options .......................................6
INSTALLATION ..............................................................7
Selecting a location ......................................7
Mounting ..............................................8
Steam cylinder .........................................10
Piping: ...............................................11
Supply water and drain ................................11
Steam blowers ......................................12
Humidifier wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Sensor placement .......................................16
Dispersion: ............................................17
Selecting the steam dispersion unit location ..................17
Steam outlet connections ...............................18
Steam blowers ......................................19
ATTENTION INSTALLER
Original Instructions
Read this manual before installing. Leave
manual with product owner.
Anden Technical Support
800-972-3710
Website:
Documents can be viewed, printed or ordered
from our website, www.anden.com.
1
ANDEN AS150 SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table of contents
OPERATION .............................................................. 24
Principle of operation ....................................24
Start-up checklist ........................................26
Model AS150..........................................27
MAINTENANCE ........................................................... 28
Shutdown and cool-down procedures .........................28
Replacing steam cylinder ..................................29
Drain valve............................................30
Troubleshooting ........................................31
Replacement parts .......................................34
2ANDEN AS150 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Product overview
Note: See detailed installation on Page 10 and principle of operation on Page 24.
The Vapor-logic Installation and Operation
Manual ships with Model AS150 humidifiers.
It is a comprehensive manual. Refer to it
for information about the keypad/display
and Web interface, and for troubleshooting
information.
OM-7661_aa
The AS150 electrode steam humidifier uses heat caused by electrical resistance
in their fill water to boil the fill water into humidification steam. Steam output
and water conductivity are managed via automatic draining and filling. See
Figure 2-1.
Steam to AS150 steam blower
(see dispersion options on Page 8)
Electrodes
Electrical resistance in fill water
Overflow to drain
Supply water connection
Control panel for on-board controller
(see Figure 3-1)
Steam cylinder
High water sensor
Fill hose
Overflow
hose
Cylinder drain
Fill cup
Download Anden literature
Anden product manuals can be
downloaded, printed, and ordered from our
website: www.anden.com
FIGURE 2-1: AS150 SERIES HUMIDIFIER COMPONENTS
PRODUCT OVERVIEW
3
ANDEN AS150 SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Product overview
SUPPLY WATER
There are benefits and trade-offs to consider when the application allows a
choice between hard and softened water:
Hard water: The benefit of hard water is less frequent draining and filling
than with softened water, which results in better energy and water efficiency
and more consistent steam output. However, cylinder replacement could
be more frequent with hard water, because hard water scale coats the
electrodes. The harder the water, the more frequent the need for a new
cylinder.
Softened water may be used in the AS150 series electrode humidifier.
However, softened water ions stay in solution to much higher concentrations
than hard water ions. The result can be more frequent draining and filling,
which results in less energy and water efficiency, and less consistent steam
output. While softened water can reduce scale build-up in the cylinder, it
can also shorten cylinder electrode life.
CONTROLLER
The Model AS150 humidifier Vapor-logic®controller features menus for all
humidifier functions, with a Web interface for access to all functions via
Ethernet.
* On-off switch for control board — not a safety shut-off to humidifier power wiring.
AS150 Vapor-logic keypad/display
Softkeys for direct
menu access
Navigation buttons
for item selection
Controller on-off switch*
Status display and
menu selection
FIGURE 3-1: AS150 SERIES HUMIDIFIER CONTROL PANEL
Table 3-1:
Supply water guidelines for AS150
series electrode humidifiers
Supply water
conductivity
125* to 1250 μS/cm (roughly
comparable to water hardness
of 10 to 36 grains per gallon).
Chlorides Not limited
pH 6.5 to 8.5
Silica < 15 ppm
Demineralized, deionized, and reverse-
osmosis water cannot be used.
Supply water outside of these guidelines may
void your Anden warranty. Please contact
your Anden Representative or Anden Technical
Support if you need advice.
* For optimal low conductivity operation
enable the Mini Drain feature in your Vapor-
logic controller: Main > Setup > Anden
management > Mini Drain > Enable.
4ANDEN AS150 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 4-1:
Line currents and recommended fusing for Anden AS150 Series humidifiers
Model Nominal steam capacity kW Phase Volts Maximum line current (amps) Recommended fusing (amps)
AS150 lbs/hr kg/h
017 50 22 16.5 3 240 48 60
Notes:
* Fill cup extension is required for the following:
- When developed length of steam tubing is more than 20' (6 m)
and duct static pressure exceeds 2" wc (498 Pa)
• Labeled dimensions: inches (millimeters).
• See mounting dimensions in Figure 8-1.
Model AS150
E
D
Electrical knockout
Top
Bottom
Front
Drain outlet
Electrical
knockouts
Supply water
connection
B
OM-7672_no fill cup
F
A
C
Electrical knockout
Dispersion outlet
E
D
G
Dimensional drawings, capacities, line currents, and fusing
SPECIFICATIONS
FIGURE 4-1: AS150 HUMIDIFIER DIMENSIONAL DRAWINGS
5
ANDEN AS150 SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 5-1:
AS150 Series humidifier dimensions by model number
Dimension Description AS150
inches mm
A Cabinet width 17.7 450
B Cabinet height 24.1 612
C Cabinet depth 11.8 300
D Cabinet back edge to steam/drain outlet centers 6.0 152
E Cabinet left edge to steam/drain outlet centers 6.0 152
F Cabinet back edge to supply water connection center 9.5 241
G Cabinet left edge to supply water connection center 1.0 25
Table 5-2:
AS150 Series humidifier weights by model number
AS150
lbs kg
Shipping weight 50 23
Maximum operating weight 79 36
Dimensions and weights
SPECIFICATIONS
6ANDEN AS150 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Open space dispersion options in Figure 6-1 are available.
Dispersion options
SPECIFICATIONS
Notes:
• Models AS150 and larger require condensate drain.
• Anden steam blowers (SDU) shipped with fuses to be installed in connected AS150 series humidifiers. North America only
Mounted on top of humidifier
Mounted up to 10' (3 m) away from
humidifier
OM-7670
OM-7698
FIGURE 6-1: AS150 STEAM BLOWERS
Indice
Altri manuali Anden Umidificatore
