Walton Sw2 Owner's Manual

umidity Source

H

Sample specifications for SW-2

Humidifiers shall be of the high speed centrifugal atomizing type.
Construction shall be of heavy gauge copper, brass and non-ferrous
alloy. Heavy duty shaded pole motor with overload protection shall
drive the centrifugal disc and pump assembly to draw water up from the
seamless copper reservoir, against breaker combs, producing a finely
atomized mist. Rotating parts shall be electronically balanced to
eliminate vibration. An automatic float valve shall maintain water level
in the reservoir.

Vapor output of the humidifier shall be constant while in operation and
shall not depend on the temperature of the air or water.

Humidifier(s) shall be Model SW-2 as manufactured by Humidity
Source, LLC. Must be UL listed for US and Canada.

Quality, Selection, Support

MODEL

SW-2

Support bracket optional

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 2 lb./hr. 50 Watts

115 volts, single phase, 60 Hz.

WEIGHT
Net: 10 lb. CARTON SIZE

Shipping: 11 lb. 15 ½” X 12 ¼” X 15 ¼”
Operating: 15 lb.

WATER CONNECTIONS & PRESSURES

Supply: 1/8” Male Pipe Thread

Overflow: ¼” Female Pipe Thread
Operating Pressure Range: 10-150 psig

Disk

CENTRIFUGAL ATOMIZER

Vapor Making
Comb

Pump Tube

Impeller
Cap

Heart of the unit
The heart of Humidity Source humidifier units is the patented
masterfully engineered Centrifugal Atomizer. Water is drawn by
centrifugal force up through the rotating impeller cap and pump tube,
then spun across the disk rotating at 3250 RPM striking the Vapor­Maker Comb creating an extremely fine vapor. An integral fan under
the rotating disk blows the vapor out of the unit resulting in a fine
atomized vapor that is quickly absorbed into the air.

1

HUMIDITY SOURCE ATOMIZING

humidifiers produce moisture that will quickly
be absorbed in the air. However, it is very important that the humidifier be installed so
that there is no chance of the moisture striking any object before it has been absorbed
by the air. If any solid is hit with air containing suspended or unabsorbed moisture,
condensation and dripping will result. It is therefore most important that all directions and
minimum dimensions be strictly adhered to.

Water Supply
1/4” O.D. Tube

No Obstruction Within
This Region To
Prevent
Wetting Objects

Water conn
1/8” MPT

Overflow
Connection
1/4” FPT

24”

24”

ection

Top View

6’ 0”

18”

6’ 0”

6’ 0”

Elevation

NOTE: Drawings Not To Scale

C

A

B

D

ACCESSORIES

A. Duct mounted, high limit humidistat.

Model No. HC-201

B. Wall mounted humidistat. Model No.
P825.
C. Johnston Controls electronic humidistat.

Model No. W351 and remote sensor (E)

E

D. Air duct pressure switch. Model No.

PC-301

Humidity Source, LLC

90 Dayton Ave. Suite 58 Passaic, New Jersey 07055

TEL [phone] FAX: [phone]

2

umidity Source

H

MODEL SW-2

Your humidifier has been designed and engineered to
give, with proper care, many years of trouble free
service. Therefore, if this unit ceases to operate
properly, we suggest you contact your local dealer. If
we, at Humidity Source, can be of any assistance to
you, please feel free to write, call or e-mail.

IMPORTANT

This space type humidifier is designed so that it may
be shelf mounted. The shelf should be at least 18”
(45.7cm) below the ceiling and 6 feet (1.8m) above
floor. The directional vapor dome should be positioned
to diffuse moisture without striking any obstructions
closer than six feet and maintain 24” minimum between
each side of the humidifier and any wall or obstruction.

PROCEDURE

Run a water supply line using 1/4” o.d. copper or
plastic tubing or 1/8” pipe. Keep the line to the rear of
the unit to avoid creating an obstruction.

Flush water feed lines before making final connection
to avoid having cutting oil, pipe scale, or chips which
may clog the float valve.

Turn on water valve and adjust water level to 1/2”
below the overflow connection by adjusting the thumb
screw as shown in Figure 1.

Adjustment is easily made using the adjusting thumb
screw for higher or lower water level as illustrated.

SERVICE & REPAIR

Should this humidifier need service or repair some time
in the future, return only atomizing unit direct to the
factory.

CARE OF THE MACHINE

Due to air washing while the humidifier is in operation,
a deposit of dirt and dust may settle in the bottom of
the water reservoir and screen, and it is recommended
that both be cleaned regularly.

Quality, Selection, Support

24”

24”

Top View

INSTALLATION & MAINTENANCE INSTRUCTIONS

IN ROOM MOUNTED HUMIDIFIER

Periodically the atomizing unit should be taken from
the reservoir and given a careful visual check. The
pump tube should be spun by hand to make sure that it
is free to revolve without binding. See maintenance
instructions.

Shut –off
valve

¼” water
supply

¼” comp.
connection
water supply

¼” female pipe
overflow connection
to drain

WIRING

The atomizer motor draws .67 Amps at 115 Volts A.C.
single phase and 60 Hz service.
Provide standard electric receptacle to receive electric
cord from humidifier. Have the hot leg of service to this
receptacle wired in series with the humidistat terminals
and use a standard disconnect switch if required. See
wiring diagram.

This humidifier may be run continuously or operated by
means of a humidistat.

Our standard human hair element humidistat model P­825 is correct for most applications maintaining up to
60% RH.

For humidors and other high humidity applications, or
for more precise control, use the electronic humidistat
model W351A. This model also has an optional digital
display module to indicate the set point and the actual
R.H. in the room.

Typical Installation

No obstruction within
the dimensions indicated to
prevent wetting objects.

Ceiling

18”

6’ Minimum
To Wall

6’ Minimum
To Floor

3

Float Valve Operation

Pressure Range

10-150 psig

Figure 1

Screen

Remove impeller

cap

2-B

Reservoir Wall

Atomizing Unit

2-A

FIGURE 2

Adjusting
Thumb Screw

Pump Tube

Impeller Cap

Sight into bottom

of tube

These openings

must be clear

2-C

Mounting
Washer

Mounting
Nut

1/8” MPT

OPERATION

Positive capacity atomizing humidifiers produce a mist that
will quickly evaporate into the air if there is no impingement
of water particles against barrier surfaces before the water
particles against barrier surfaces before the water is
completely absorbed. Strict attention to minimum clearance
dimensions must be adhered to in order to avoid
condensation.

MAINTENANCE

Unplug electric cord & remove dome. Carefully lift atomizing
unit out of reservoir (Figure 2). Hold atomizing unit firmly
and remove the perforated screen (2-A) by turning it slightly
to the left until the four lugs are in line with the slots. To
remove the impeller cap (2-B), hold a flat file or the back of a
table knife flat against the side of the tube and gently tap the

cap which is held in place by a pressed fit. After the cap has
been removed, the inside of the tube is visible and it is
simple matter to clean it with a piece of cloth on the end of a
screwdriver or a small round brush.

There are three ports through which water makes its way
from the pump tube to the top of the rotating disc (2-C).
These ports should be cleaned out with the aid of a wire.
See drawing on this page.

Replace the impeller cap by tapping it evenly back into
place, using plastic handle on screwdriver.

Remove water from reservoir & rinse. Fill reservoir with
white vinegar or other mild acid solution. Replace dome &
atomizer on reservoir & block outlet of dome with plastic
wrap & a rubber band. Run atomizer for ½ hour or until
minerals are completely dissolved. If necessary, rinse with
diluted chlorine bleach solution. Rinse with clean water and
return to service. For hard water problems, see
“demineralized water” below.

Inspect float valve assemble periodically, & replace when
necessary, or every few years. Should this humidifier need
service or repair some time in the future, return only
atomizing unit direct to the factory.

DEMINERALIZED WATER

If your local water supply has a high mineral content, (call
water company & ask for “total dissolved solids” or T.D.S.)
This mineral will create tiny particles of airborne “white dust”
when the mist evaporates in the air. To eliminate this dust,
use an ion exchange or a reverse osmosis demineralizer.
See Humidity Source data sheets for Reverse Osmosis
demineralizing filters.

4

C

er

W351 Humidistat

Electronic Sensor

COM
PWR
OUT

Wiring Diagram If Using P-825 Humidistat Installation

Humidifi

Receptacle

Humidity Source P-825
Wall Humidistat

120 VAC

L1

L

2

Neutral Hot

H

L

W351A Wiring Diagram If Using W351 On/Off Controller

Controller Power Module Digital Display
W351A Y350R D351

COM
VDC
SEN

120 VAC

To Humidifier

5

MODEL SW-2 REPLACEMENT PARTS

Description Part Number

Dome Strap Assembly 079590

Dome 905026

Channel Rubber 905582

Atomizing Assembly WF/525/9/2

Rubber Mounts (3) 80096

Impeller Cap 905587

Cylindrical Screen 905543

P-825 Humidistat
Human Hair Element

Standard

Humidifier Accessories

W351 Humidistat
Electronic Sensor

For high humidity
And/or close
tolerances

Float Valve Assembly 079057

Reservoir 905608

Humidity Source Reverse Osmosis water
Treatment systems. Sizes range from industrial
capacities down to individual room units.

Humidity Source LLC

90 Dayton Ave.Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

6

umidity Source

H

Sample specifications for SF-5/SW-5

Cold water centrifugal atomizing type humidifier and mounting
brackets for installation overhead. Water level reservoir includes
valve to automatically regulate water flow. Atomizer includes
motor, impeller, disc and breaker comb to produce a fine vapor
and introduce moisture with a small amount of air through the
vapor dome to the surroundings. All water exposed parts to be
copper, brass or non-ferrous alloy.

The SF5 includes an air filter to protect atomizing unit from dust,
lint etc. in the small amount of primary air that passes through
the atomizer. Must be UL listed for US and Canada.

Quality, Selection, Support

MODEL

SF-5/SW-5

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 5 lb./hr. .76 amps

115 volts, 1 ph – 50/60 Hz.

WEIGHT 3250 RPM
Net: 25 lb.

Shipping: 28 lb. CARTON SIZE
Operating: 36 lb. Unit: 12” x 20” x 18”
Dome: 13 3/4” x 10 ¼” x 19 ¼”
DIMENSIONS
Height: 10 ½”
Diameter: 14 ½”

WATER CONNECTIONS & PRESSURES Notes:

Supply: 1/8” Male Pipe Thread SF Models equipped with filters of a washable,

Overflow: ¼” Female Pipe Thread replaceable filter media type. Proper dome
Operating Pressure Range: 10-100 psig. selection must be made.

These specification are subject to change without
Notice. Mounting brackets supplied with units.

7

9

Hanging straps

pp

916

0

by contractor

Dome ports

Humidity Source ATOMIZING

absorbed in to the air, However, It is very important that the humidifier be installed so
there is on chance of the moisture striking any object before it has been absorbed in the
air. If any solid object is hit with air containing suspended or absorbed moisture,
condensation and dripping will result. It is therefore most important that all directions and
minimum dimensions be strictly adhered to.

APPLICATION NOTES:

1. Allow minimum distance of un-obstructive space around humidifier for moisture to be

absorbed into the air as shown in diagram.

2. Operation is by means of P-825 wall mounted humidistat with human hair sensing

element. Order separately.

3. If water supply is hard, install a demineralizer in water in water line to prevent “white

dust” from being formed.

4. When ordering, choose proper dome (see below).

Ceiling Line

humidifiers produce moisture that will quickly be

Note: Drawing not to scale

Hanging bracket
su

Water supply
1/8” male pipe thd.

Over flow
¼” female pipe thd.

lied

Two way Dome shown

No obstruction within this region
To prevent wetting object for
One and Two way Domes, L = 41”
For Standard Dome, L = 6’ 0”

IMPORTANT: Select proper Dome to avoid condensation on obstructions.

Standard Dome Two way directional Dome One way Directional Dome

Humidity Source, LLC

90 Dayton Ave. Suite 58 Passaic, New Jersey 07055

TEL 973-

16-1001 FAX: 973-

-077

Shelf mounted use
For one way Dome

8

umidity Source

H

Quality, Selection, Support

INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL SF-5 and SW-5

GENERAL INFORMATION

This space type humidifier is designed to be
suspended from the ceiling or mounted on a shelf.
Hanging brackets are provided but supports from the
ceiling or shelf must be furnished by others.
The humidifier consists of two assemblies; the water
reservoir which includes a float type water level valve
with 1/8” male pipe thread connection and a safety
overflow port and the atomizer assembly which is a
delicately balanced, completely self-contained unit
that rests in the water reservoir and supports the
directional vapor distribution dome.

PROCEDURE

When selecting exact location for each humidifier be
sure that the vapor discharge is approximately six feet
from the any obstruction such as lights, pipes or
beams. Vapor must also avoid touching humidifier
wiring and supports. The following procedure is
recommended.

1. Obtain the correct type of vapor distribution
dome for each humidifier location.

2. At each location place the correct dome in the
reservoir and install one hanging bracket
above the water inlet valve, above the position
of the water valve on the side of the tank. Then
rotate and position the dome so that its vapor
ports will avoid this bracket.

3. Place the other hanging brackets in a position
which will give level, secure suspension and at
the same time will avoid striking the hangers
which are to be attached to these brackets.

4. After positioning the reservoir to avoid vapor
touching any existing obstructions, locate
points on the ceiling directly above the
brackets and connect suspension straps or
rods at these points. See Figure “B” for further
details.

NOTE: ALL MINIMUM INSTALLATIONS
DIMENSIONS AS SHOWN IN FIGURE “A” MUST
BE FOLLOWED.

PLUMBING

Insert the float valve assembly as illustrated in
Figure “C”. Run a water supply line near the

ceiling and drop a 1/4" tubing line ( or 1/8” pipe)
from the supply line. Keep the drop very close to
one of the hangers to avoid creating an
obstruction.
Flush all water feed lines before making final
connections to avoid clogging the float valve with
foreign matter.
Adjust the position of float valve stem to establish a
water level in the reservoir about 1/2” below the
overflow fitting. See Figure “C” for location of
adjusting screw.
Be sure that the water valve arm is directed toward
the center of the reservoir when tightening the
mounting nut.

FOR MODELS WITH FILTER

Place the filter in the reservoir with wide flange on
top, and the notch directly above marker near
water inlet position. Place atomizer assembly into
this flange positioned so that the motor extension
cord matches the notch in the flange. This avoids
the possibility of atomizer legs interfering with the
operation of the water regulating valve.
Place vapor dome over the atomizer assembly and
run electric cord along one hanger to a female
receptacle. Wiring to the receptacle should be
through a humidistat control that will operate the
humidifier. Refer to Figure “E” for wiring diagram.
Due to a certain amount of “air-washing” when the
humidifier is operating, an accumulation of dust
and dirt may settle at the bottom of the reservoir. It
is therefore recommended that periodic inspection
and cleaning be performed as necessary. Also the
water drain plug or valve should be opened
frequently and the water line flushed out. This
periodic maintenance can greatly extend the life of
the humidifier.

IMPORTANT:
IT IS NECESSARY TO KEEP THE RESERVOIR
AND ATOMIZER UNIT CLEAN IN ORDER TO
MAINTAIN FULL HUMIDIFIER CAPACITY AND
NOT OVERLOAD THE MOTOR.

MAINTENANCE

As stated above, the water reservoir and pump
tube must be kept clean and free of minerals, scale
and dust. Periodically remove atomizer assembly
and clean reservoir with white vinegar. Carefully
remove impeller cap (see Figure “D”) and clean
pump tube with pipe cleaner or test tube brush.
Motors have sealed bearings and do not require
lubrication.

9

SERVICE

Atomizer motors are sealed in a copper housing at
the top of the atomizer assembly. DO NOT
BREAK THIS SEAL. If for any reason a repair
becomes necessary, carefully package the entire
atomizer assembly and return intact to your
installer, local distributor or Humidity Source, LLC.
When ordering parts have model number and
voltage available.

Two Way Dome Shown

No obstacle within this region
to prevent wetting objects
For one and two way domes, L = 41”
For standard dome, L = 6’ – 0”

Figure A

Hanging straps
By contractor

Positive Capacity Atomizing Humidifiers
produce a fine vapor that will quickly evaporate in
the air if there is no impingement of water particles
against obstructions before absorption is complete.
Strict attention to minimum clearance dimensions
must be adhered to in order to avoid condensation.

FLOAT VALVE

Float Valve Operation

Pressure Range

10-150 psig

Reservoir Wall

Mounting
Washer

Mounting
Nut

1/8” MPT

Adjusting
Thumb Screw

Dome Ports

Water supply
1/8” MPT

Overflow
1/4" FPT

Brackets Supplied

Figure B

by Humidity Source

GENERAL NOTES:

1. Water reservoir must be level.

2. Keep water supply piping close to hanging strap.

3. Use a humidistat for automatic operation.

4. Use Reverse Osmosis for poor quality water.

Figure C

Figure D

10

Wiring Diagram For P-825 Humidistat

er

Humidifi

Receptacle

120 VAC

L1

L

2

Neutral Hot

W351A Wiring Diagram – On/Off Control

Humidity Source P-825
Wall Humidistat

H

L

C

W351 Humidistat

Electronic Sensor

COM
PWR
OUT

Controller Power Module Digital Display
W351A Y350R D351

COM
VDC
SEN

120 VAC

To Humidifier

11

Humidifier Accessories

Humidistats, Sensors & Controls

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity

And/or close

tolerances

W351 ELECTRONICHUMIDITY

CONTROL With Digital Display

Reverse Osmosis Demineralizers

Humidity Source Reverse Osmosis

water Treatment systems. Sizes range from
industrial capacities down to individual room units.

RO-120
RO-450

RO-24

Humidity Source LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

12

RO-900

umidity Source

H

Sample specifications for SF-10/SW-10

Cold water centrifugal atomizing type humidifier and mounting brackets
for installation overhead. Water reservoir includes valve to automatically
regulate water flow. Atomizer includes motor, impeller, disc and breaker
comb to produce a fine vapor and introduce moisture with a small
amount of air through the vapor dome to the surroundings. All water
exposed parts to be copper, brass or non-ferrous alloy.

SF10 includes an air filter to protect atomizing unit from dust, lint etc. in
the small amount of primary air that passes through the atomizer

b

e UL listed for US and Canada.

Quality, Selection, Support

& SF-10B/SW-10B

. Must

MODEL
SF-10/SW-10
SF-10B/SW-10B

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 10 lb./hr. Model SF-10 & SW-10

1.15 amps, 115 volts, 1 ph – 50/60 hz.

WEIGHT Model SF-10B & SW-10B
Net: 28 lb. .55 AMPS, 220 volts, 1 ph – 50/60 hz.

Shipping: 31 lb.
Operating: 40 lb.

WATER CONNECTIONS & PRESSURES Notes:

Supply: 1/8” Male Pipe Thread SF Models equipped with filters of a washable,

Overflow: ¼” Female Pipe Thread replaceable filter media type. Proper dome
Operating Pressure Range: 10-100 psig. selection must be made.

These specification are subject to change without
Notice. Mounting brackets supplied with units.

13

Humidity Source ATOMIZING

pp

humidifiers produce moisture that will quickly be
absorbed in to the air, However, It is very important that the humidifier be installed so
there is on chance of the moisture striking any object before it has been absorbed in the
air. If any solid object is hit with air containing suspended or absorbed moisture,
condensation and dripping will result. It is therefore most important that all directions and
minimum dimensions be strictly adhered to.

Ceiling Line

Hanging straps
by contractor

Dome ports

Hanging bracket
su

Water supply
1/8” male pipe thd.

Over flow
¼” female pipe thd.

lied

Two way Dome shown

No obstruction within this region
To prevent wetting object for
One and Two way Domes, L = 41”
For Standard Dome, L = 6’ 0”

IMPORTANT: Select proper Dome to avoid condensation on obstructions.

Note: Drawing not to scale

Standard Dome Two way directional Dome One way Directional Dome

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Humidity Source, LLC

TEL [phone] FAX: [phone]

14

umidity Source

H

Quality, Selection, Support

INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL SF-10, SF-10B, and SW-10, SW-10B

GENERAL INFORMATION

This space type humidifier is designed to be
suspended from the ceiling or mounted on a shelf.
Hanging brackets are provided but supports from the
ceiling or shelf must be furnished by others.
The humidifier consists of two assemblies; the water
reservoir which includes a float type water level valve
with 1/8” male pipe thread connection and a safety
overflow port and the atomizer assembly which is a
delicately balanced, completely self-contained unit that
rests in the water reservoir and supports the directional
vapor distribution dome.

PROCEDURE

When selecting exact location for each humidifier be
sure that the vapor discharge is approximately six feet
from the any obstruction such as lights, pipes or
beams. Vapor must also avoid touching humidifier
wiring and supports. The following procedure is
recommended.

1. Obtain the correct type of vapor distribution
dome for each humidifier location.

2. At each location place the correct dome in the
reservoir and install one hanging bracket above
the water inlet valve, above the position of the
water valve on the side of the tank. Then rotate
and position the dome so that its vapor ports
will avoid this bracket.

3. Place the other hanging brackets in a position
which will give level, secure suspension and at
the same time will avoid striking the hangers
which are to be attached to these brackets.

4. After positioning the reservoir to avoid vapor
touching any existing obstructions, locate points
on the ceiling directly above the brackets and
connect suspension straps or rods at these
points. See Figure “B” for further details.

NOTE: ALL MINIMUM INSTALLATIONS
DIMENSIONS AS SHOWN IN FIGURE “B” MUST
BE FOLLOWED.

PLUMBING

Insert the float valve assembly as illustrated in
Figure “C”. Run a water supply line near the ceiling
and drop a 1/4" tubing line ( or 1/8” pipe) from the

supply line. Keep the drop very close to one of the
hangers to avoid creating an obstruction.
Flush all water feed lines before making final
connections to avoid clogging the float valve with
foreign matter.
Adjust the position of float valve stem to establish a
water level in the reservoir about 1/2” below the
overflow fitting. See Figure “C” for location of
adjusting screw.
Be sure that the water valve arm is directed toward
the center of the reservoir when tightening the
mounting nut.

FOR MODELS WITH FILTER

Place the filter in the reservoir with wide flange on
top, and the notch directly above marker near water
inlet position. Place atomizer assembly into this
flange positioned so that the motor extension cord
matches the notch in the flange. This avoids the
possibility of atomizer legs interfering with the
operation of the water regulating valve.
Place vapor dome over the atomizer assembly and
run electric cord along one hanger to a female
receptacle. Wiring to the receptacle should be
through a humidistat control that will operate the
humidifier. Refer to Figure “E” for wiring diagram.
Due to a certain amount of “air-washing” when the
humidifier is operating, an accumulation of dust and
dirt may settle at the bottom of the reservoir. It is
therefore recommended that periodic inspection
and cleaning be performed as necessary. . Also the
water drain plug or valve should be opened
frequently and the water line flushed out. This
periodic maintenance can greatly extend the life of
the humidifier.

IMPORTANT:
IT IS NECESSARY TO KEEP THE RESERVOIR
AND ATOMIZER UNIT CLEAN IN ORDER TO
MAINTAIN FULL HUMIDIFIER CAPACITY AND
NOT OVERLOAD THE MOTOR.

MAINTENANCE

As stated above, the water reservoir and pump tube
must be kept clean and free of minerals, scale and
dust. Periodically remove atomizer assembly and
clean reservoir with white vinegar. Carefully remove
impeller cap (see Figure “D”) and clean pump tube
with pipe cleaner or test tube brush.

15

Motors have sealed bearings and do not require
lubrication.

SERVICE

Atomizer motors are sealed in a copper housing at
the top of the atomizer assembly. DO NOT BREAK
THIS SEAL. If for any reason a repair becomes
necessary, carefully package the entire atomizer
assembly and return intact to your installer, local
distributor or Humidity Source, LLC. When ordering
parts have model number and voltage available.

Two Way Dome Shown

No obstacle within this region
to prevent wetting objects
For one and two way domes, L = 41”
For standard dome, L = 6’ – 0”

Figure A

Hanging straps
By contractor

Positive Capacity Atomizing Humidifiers
produce a fine vapor that will quickly evaporate in
the air if there is no impingement of water particles
against obstructions before absorption is complete.
Strict attention to minimum clearance dimensions
must be adhered to in order to avoid condensation.

FLOAT VALVE

Float Valve Operation

Pressure Range

10-150 psig

Reservoir Wall

Mounting
Washer

Mounting
Nut

1/8” MPT

Adjusting
Thumb Screw

Dome Ports

Water supply
1/8” MPT

Overflow
1/4" FPT

Brackets Supplied

Figure B

by Humidity Source

GENERAL NOTES:

1. Water reservoir must be level.

2. Keep water supply piping close to hanging strap.

3. Use a humidistat for automatic operation.

4. Use Reverse Osmosis for poor quality water

Figure C

Figure D

.

16

er

W351 Humidistat

Electronic Sensor

COM
PWR
OUT

COM
VDC
SEN

Wiring Diagram For P-825 Humidistat Installation

Humidifi

Receptacle

120 VAC

L1

L

2

Neutral Hot

W351A Wiring Diagram – On/Off Control

Humidity Source P-825
Wall Humidistat

H

L

C

Controller Power Module Digital Display
W351A Y350R D351

120 VAC

To Humidifier

17

Humidifier Accessories

Humidistats, Sensors & Controls

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity

And/or close

tolerances

W351 ELECTRONIC HUMIDITY

Reverse Osmosis Demineralizers

Humidity Source Reverse Osmosis Water

Treatment systems. Sizes range from industrial capacities
down to individual room units.

CONTROL With Digital Display

RO-120
RO-450

RO-24

Humidity Source LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

18

RO-900

MODEL

umidity Source

H

Quality, Selection, Support

Sample specifications for WF-225

Cold water centrifugal atomizing type humidifier and mounting
brackets for installation in return duct applications. Water
reservoir includes float valve to automatically regulate water
level. Humidifier includes motor, impeller, disk and breaker
comb to produce a fine vapor. Rotating parts shall be
electronically balanced to eliminate vibration. Tubes shall be
employed to direct moisture into vertical or horizontal duct
systems and equalize humidifier internal air pressure to that of
the duct. All water exposed parts to be copper, brass, or non­ferrous alloy. Vapor output of the humidifier shall be constant
while in operation and shall not depend on the temperature of
the air or water. Humidifier(s) shall be Model WF-225 as
manufactured by Humidity Source. Must be UL listed for US and
Canada.

WF-225

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 3.5 lb./hr. 50 Watts

115 volts, single phase, 60 Hz.

WEIGHT
Net: 16 lb. CARTON SIZE

Shipping: 18 lb. 15 ½” X 12 ½” X 15 ¼”
Operating: 20 lb.

WATER CONNECTIONS & PRESSURES UNIT SIZE

Supply: 1/8” Male Pipe Thread Height: 11 ½”

Overflow: ¼” Female Pipe Thread Diameter: 10 ¼”
Operating Pressure Range: 10-100 psig

Disk

CENTRIFUGAL ATOMIZER

Vapor Making
Comb

Pump Tube

Impeller
Cap

The heart of Humidity Source humidifier units is the patented
masterfully engineered Centrifugal Atomizer. Water is drawn
by centrifugal force up through the rotating impeller cap and
pump tube, then spun across the disk rotating at 3250 RPM
striking the Vapor-Maker Comb creating an extremely fine
vapor. An integral fan under the rotating disk blows the
vapor out of the unit resulting in a fine atomized vapor that is
quickly absorbed into the air.

19

Humidity Source POSITIVE CAPACITY ATOMIZING humidifiers produce moisture that

pply

Air Flow

will quickly be absorbed in to the air stream, provided there is no impingement. It is
therefore most important that all directions and minimum dimensions be strictly adhered
to In order to avoid condensation.

SIDE VIEW

TOP VIEW

Water
Su

Overflow

Mounting
Bracket

Duct Location Requirements

Example Locations

Return Air

Place nozzle
of unit in
center of duct

A

B

C

6’

6’

12”

16”

Furnace

Filters

ACCESSORIES

D

A. Duct mounted, high limit humidistat.

Model No. HC-201

B. Wall mounted humidistat. Model No.
P825.

C. Johnston Controls electronic humidistat.

D. Air duct pressure switch. Model No.

E

Supply Air

Model No. W351 with remote sensor (E)

PC-301

90 Dayton Ave. Suite 58 Passaic, New Jersey 07055 TEL [phone] FAX [phone]

Humidity Source, LLC

20

r

r

umidity Source

H

Quality, Selection, Support

INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL WF-225

Your humidifier has been designed and engineered to
give, with proper care, many years of trouble free
service. Therefore, if this unit ceases to operate
properly, we suggest you contact your local dealer. If
we, at Humidity Source, can be of any assistance to
you, please feel free to write, call or e-mail.

APPLICATION

The WF-225 is designed for forced air systems only
mounted on the return air duct. The unit must be wired
to function only when the furnace fan is in operation. A
typical return air duct installation is shown in Figure C.
All dimensions and mounting positions are considered
minimum to prevent wetting of internal duct surfaces.
The WF-225 output is sufficient for forced air furnaces
up to 125,000 BTU output.

INSTALLING

Water Supply. Run a water supply line from an

existing cold water pipe using 1/4” o.d. copper or
plastic tubing or 1/8” pipe (see Figure A). A saddle
valve and compression fittings are a convenient way to
run the supply water line to the humidifier. Flush water
feed lines before making final connection to avoid
foreign objects which may clog the float valve.

Mounting. The WF-225 comes with a duct mounting
plate to support the unit. Place the mounting plate at a
point where the humidifier is to be installed. Scribe a
hole for discharge tube and mounting screw locations.
Cut out the hole for vapor discharge tube. Drill (2) 9/32”
holes to accommodate top of mounting plate for 1/4”­20 bolts. The rest drill with #30 drill for #10 sheet metal
screws. Install mounting plate on duct.
Insert (3) rubber feet in bottom of mounting plate using
nuts to secure. Tighten front nuts only.
Set reservoir in place and connect water line. Turn on
water valve and adjust water level to 1/2” below the
overflow connection by adjusting the thumb screw as
shown in Figure D.
Insert atomizer assembly into reservoir with power cord
in notch provided in reservoir. Fit tube seal over vapor
discharge tube. Set dome over atomizer and through
mounting plate and hole in duct. Adjust reservoir to
touch front rubber feet then slide the tube seal against
the mounting plate. Slide rear rubber foot against the
reservoir holding it in place, tighten nut.

WIRING. Provide standard electric receptacle to
receive electric cord from humidifier. Power for
humidifier must come from the furnace blower motor to
insure that it never runs unless there is air flow.

A humidistat may be wired in series with the hot leg
from the blower motor. See wiring diagram, Figure B.
Plug in the humidifier, it is now ready for operation.

CARE OF THE MACHINE

Periodically the atomizing unit should be removed from
the reservoir and given a careful visual check. The
pump tube should be spun by hand to make sure that it
is free to revolve without binding. See maintenance
instructions.

Typical Water Connections

Saddle
Valve

½” Cold Water Pipe

¼” Water
Supply

¼” Comp.
Elbow

¼” FPT Overflow
Connection To Drain

FIGURE A

Humidifie

Wiring Diagram Fo
P-825 Humidistat

Receptacle

Humidity Source P-825
Wall Humidistat

H

L
C

120 VAC

L

L1

21

2

Neutral Hot
(Connect To Furnace
Blower Motor)

FIGURE B

W351 Humidistat

Electronic Sensor

COM
PWR
OUT

W351A Wiring Diagram – On/Off Control

Controller Power Module Digital Display
W351A Y350R D351

COM
VDC
SEN

120 VAC

Return Air

Place nozzle
of unit in
center of duct

12”

6’

6’

To Humidifier

Example Locations

16”

Air Flow

Supply Air

Furnace

Filters

FIGURE C

22

Float Valve Operation

Pressure Range

10-150 psig

FIGURE D

Atomizing Unit

Screen

Remove impeller

cap

E-2

FIGURE E

Reservoir Wall

E-1

Adjusting
Thumb Screw

Pump Tube

Impeller Cap

Sight into bottom

of tube

These openings

must be clear

E-3

Mounting
Washer

Mounting
Nut

1/8” MPT

OPERATION

Positive capacity atomizing humidifiers produce a mist that
will quickly evaporate into the air if there is no impingement
of water particles against barrier surfaces before the water
particles against barrier surfaces before the water is
completely absorbed. Strict attention to minimum clearance
dimensions must be adhered to in order to avoid
condensation.

MAINTENANCE

Unplug electric cord & remove dome. Carefully lift atomizing
unit out of reservoir (Figure E). Hold atomizing unit firmly
and remove the perforated screen (E-1) by turning it slightly
to the left until the four lugs are in line with the slots. To
remove the impeller cap (E-2), hold a flat file or the back of a
table knife flat against the side of the tube and gently tap the

cap which is held in place by a pressed fit. After the cap has
been removed, the inside of the tube is visible and it is
simple matter to clean it with a piece of cloth on the end of a
screwdriver or a small round brush.

There are three ports through which water makes its way
from the pump tube to the top of the rotating disc (E-3).
These ports should be cleaned out with the aid of a wire.
See drawing on this page.

Replace the impeller cap by tapping it evenly back into
place, using plastic handle on screwdriver.

Remove water from reservoir & rinse. Fill reservoir with
white vinegar or other mild acid solution. Replace dome &
atomizer on reservoir & block outlet of dome with plastic
wrap & a rubber band. Run atomizer for ½ hour or until
minerals are completely dissolved. If necessary, rinse with
diluted chlorine bleach solution. Rinse with clean water and
return to service. For hard water problems, see
“demineralized water” below.

Inspect float valve assemble periodically, & replace when
necessary, or every few years. Should this humidifier need
service or repair some time in the future, return only
atomizing unit direct to the factory.

DEMINERALIZED WATER

If your local water supply has a high mineral content, (call
water company & ask for “total dissolved solids” or T.D.S.)
This mineral will create tiny particles of airborne “white dust”
when the mist evaporates in the air. To eliminate this dust,
use an ion exchange or a reverse osmosis demineralizer.
See Humidity Source data sheets for Reverse Osmosis
demineralizing filters.

23

MODEL WF-225 REPLACEMENT PARTS

Description

Part Number

Dome 905026

Channel Rubber 905582

Atomizing Assembly WF/525/9/2

Rubber Mounts (3) 80096

Impeller Cap 905587

P-825 Humidistat
Human Hair Element

Humidifier Accessories

W351 Humidistat
Electronic Sensor

Cylindrical Screen 905543

Float Valve Assembly 079057

Reservoir 905608

FIGURE F

Humidity Source Reverse Osmosis water

Treatment systems. Sizes range from industrial
capacities down to individual room units.

For high humidity

Standard

And/or close
tolerances

Humidity Source LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

24

umidity Source

H

Sample specifications for WF-HP-226

Cold water centrifugal atomizing type humidifier and mounting
brackets for installation in duct systems negative or positive
pressure. Maximum allowed positive static pressure - .25” H2O.
Water reservoir includes float valve to automatically regulate
water level. Humidifier includes motor, impeller, disk and
breaker comb to produce a fine vapor. Rotating parts shall be
electronically balanced to eliminate vibration. Tubes shall be
employed to direct moisture into vertical or horizontal duct
systems and equalize humidifier internal air pressure to that of
the duct. All water exposed parts to be copper, brass, or non­ferrous alloy. Vapor output of the humidifier shall be constant
while in operation and shall not depend on the temperature of
the air or water. Humidifier(s) shall be Model WF-HP-226 as
manufactured by Humidity source. Must be UL listed for US and
Canada.

Quality, Selection, Support

MODEL

WF-HP-226

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 3 lb./hr. 50 Watts

115 volts, single phase, 60 Hz.

WEIGHT
Net: 17 lb. CARTON SIZE

Shipping: 19 lb. 15 ½” X 12 ¼” X 15 ¼”
Operating: 20 lb.

WATER CONNECTIONS & PRESSURES UNIT SIZE

Supply: 1/8” Male Pipe Thread Height: 11 ½”

Overflow: ¼” Female Pipe Thread Diameter: 10 ¼”
Operating Pressure Range: 10-100 psig

Disk

Vapor Making
Comb

Pump Tube

Impeller
Cap

The heart of Humidity Source humidifier units is the patented
masterfully engineered Centrifugal Atomizer. Water is drawn
by centrifugal force up through the rotating impeller cap and
pump tube, then spun across the disk rotating at 3250 RPM
striking the Vapor-Maker Comb creating an extremely fine
vapor. An integral fan under the rotating disk blows the
vapor out of the unit resulting in a fine atomized vapor that is
quickly absorbed into the air.

CENTRIFUGAL ATOMIZER

25

Humidity Source POSITIVE CAPACITY ATOMIZING

moisture that will quickly be absorbed in to the air stream, provided there is no
impingement. It is therefore most important that all directions and minimum dimensions
be strictly adhered to in order to avoid condensation.

humidifiers produce

Side View

Top View

Water
Supply

Duct Location Requirements

6’ 0” Minimum

Overflow

Discharge Tube

Air Intake

Mounting
Bracket

A

B

C

D

ACCESSORIES

A. Duct mounted, high limit humidistat.

Model No. HC-201

B. Wall mounted humidistat. Model No.
P825.
C. Johnston Controls electronic humidistat.

Model No. W351 with remote sensor (E)

E

D. Air duct pressure switch. Model No.

PC-301

Humidity Source, LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

TEL [phone] FAX: [phone]

26

r

r

umidity Source

H

Quality, Selection, Support

INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL WF-HP-226

NOTE: MAXIMUM STATIC AIR PRESSURE
ALLOWED AT SUPPLY IS .25” H

1. Choose a mounting location, with a 6 ft. minimum straight
unobstructed downstream run, on the side of a 12 inch
minimum width by 12 inch minimum height supply or return
duct. See Fig. F.

2. Place the mounting plate against the duct at the mounting
location and scribe the (2) large air tube holes and (11)
mounting screw locations on the duct.

3. With a straight edge scribe a 3 inch wide by 8 inch high
rectangle enclosing the (2) large circles on the duct and cut out
this rectangle.

4. Drill (2) 9/32 inch diameter holes at the two top screw hole
locations and drill the remaining (9) screw hole locations with a
#30 drill.

5. Assemble the mounting plate to the duct with (2) ¼ -20
screws and nuts and (9) #10 sheet metal screws.

6. Slide the intake tube with a tube seal onto the reservoir air
intake tube oriented such that when the humidifier is
assembled on the mounting plate the intake end of the elbow
will be facing directly into the duct air flow. Slide the extension
tube onto the dome and seal the joint with the supplied rubber
seal band as shown in Fig. B. This extension tube must be
tilted upward approximately 5
into the duct.

7. Insert (3) rubber feet in the bottom of the mounting plate,
with rubber bumper up, and attach nuts to the feet. Tighten the
front nut and leave the (2) rear nuts loose.

8. Place the reservoir on the mounting plate while slipping the
air intake tube through the lower hole in the mounting plate.
Again, make sure the intake tube faces the duct air flow.

9. Connect water supply line to float valve as illustrated in Fig.
C. Turn on water valve and adjust the water level to ½” below
the overflow port by adjusting the float position with the
adjusting screw. See Fig. D

10. Place the atomizer unit in the reservoir with its electrical
cord located in the notch provided in the reservoir lip. Place the
dome on the atomizer unit while slipping its extension tube
through the upper hole in the mounting plate. Attach the dome
strap assembly. See Fig. A.

11. Adjust the reservoir so that it touches the front rubber foot.
Slide the tube seals up to the mounting plate. Move the two
rear rubber feet so they touch the reservoir, holding it in place.
Tighten the rear nuts.

12. Provide a receptacle in a convenient location and make
necessary electrical connections as indicated in the schematic
wiring diagram in Fig. F.

13. If the water has a high concentration of minerals, a
Humidity Source reverse osmosis unit may be required.

o

to prevent water from dripping

2

O.

Dome Strap

Dome

Atomizing
Unit

Water
Connection

Rubber
Foot

Rubber Seale

Tube Seals

Overflow
Port

See Enlarged
View Below

Vapor Dome

Mounting
Plate

Extension
Tube

Reservoir Air
Intake Tube

Rubber Seale

Discharge

Air Int ake

Figure A

Extension Tube

Figure B

Slip rubber sealer end of extension tube all the way over
vapor tube of dome. Peel top layer of rubber sealer off the
extension tube and on to the vapor tube.

Rubber Sealer

Vapor Tube

This Joint
Must be Sealed

Extension Tube

Figure B
Enlarged View

Be sure that the rubber seal over laps the extension tube and
the extension tube overlaps the vapor tube as shown in the
illustration above.

27

Positive capacity atomizing humidifiers produce

r

moisture that will quickly evaporate in the air stream, provided
there is no impingement of water particles against barrier
surfaces before the water is completely absorbed by the air in
the duct. Strict attention to minimum clearance dimensions
must be adhered to in order to avoid condensation in the duct.

Float Valve Operation

Float Assembly Details

Reservoir Wall

Pressure Range

10-150 psig

Humidifier

Figure F

Figure D

Receptacle

Water Lever
Adjusting Screw

Duct Location Requirements

Wiring Diagram Fo
P-825 Humidistat

120 VAC

L

L1

2

Neutral Hot
(Connect To Furnace
Blower Motor)

Mounting
Washer

Mounting

Nut

1/8” MPT

H

Humidity Source P-825

L

Wall Humidistat

C

Water Supply Connections

Cold Water Pipe

Saddle Valve

Instructions For
Connecting
Water Supply

¼” Tubing Water
Line

Fittings As
Required

Reservoir

Figure C

Figure E

28

Float Valve Operation

Pressure Range

10-150 psig

Figure 1

Screen

Remove impeller

cap

2-B

Reservoir Wall

Atomizing Unit

2-A

FIGURE 2

Adjusting
Thumb Screw

Pump Tube

Impeller Cap

Sight into bottom

of tube

These openings

must be clear

2-C

Mounting
Washer

Mounting
Nut

1/8” MPT

OPERATION

Positive capacity atomizing humidifiers produce a mist that
will quickly evaporate into the air if there is no impingement
of water particles against barrier surfaces before the water
particles against barrier surfaces before the water is
completely absorbed. Strict attention to minimum clearance
dimensions must be adhered to in order to avoid
condensation.

MAINTENANCE

Unplug electric cord & remove dome. Carefully lift atomizing
unit out of reservoir (Figure 2). Hold atomizing unit firmly
and remove the perforated screen (2-A) by turning it slightly
to the left until the four lugs are in line with the slots. To
remove the impeller cap (2-B), hold a flat file or the back of a
table knife flat against the side of the tube and gently tap the

cap which is held in place by a pressed fit. After the cap has
been removed, the inside of the tube is visible and it is
simple matter to clean it with a piece of cloth on the end of a
screwdriver or a small round brush.

There are three ports through which water makes its way
from the pump tube to the top of the rotating disc (2-C).
These ports should be cleaned out with the aid of a wire.
See drawing on this page.

Replace the impeller cap by tapping it evenly back into
place, using plastic handle on screwdriver.

Remove water from reservoir & rinse. Fill reservoir with
white vinegar or other mild acid solution. Replace dome &
atomizer on reservoir & block outlet of dome with plastic
wrap & a rubber band. Run atomizer for ½ hour or until
minerals are completely dissolved. If necessary, rinse with
diluted chlorine bleach solution. Rinse with clean water and
return to service. For hard water problems, see
“demineralized water” below.

Inspect float valve assemble periodically, & replace when
necessary, or every few years. Should this humidifier need
service or repair some time in the future, return only
atomizing unit direct to the factory.

DEMINERALIZED WATER

If your local water supply has a high mineral content, (call
water company & ask for “total dissolved solids” or T.D.S.)
This mineral will create tiny particles of airborne “white dust”
when the mist evaporates in the air. To eliminate this dust,
use an ion exchange or a reverse osmosis demineralizer.
See Humidity Source data sheets for Reverse Osmosis
demineralizing filters.

29

MODEL WF-HP-226 Replacement Parts

Description

Dome Strap Assembly 079590

Tube Seal 908576

Extension Tube Sealer 905528

Dome 905026

Channel Rubber 905582

Atomizing Assembly WFHP526

Motor Pan Gasket 905615

Impeller Cap 905503

Cylindrical Screen 905543

Float Valve Assembly 079057

Reservoir 905062

Part Number

Humidifier Accessories

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity
And/or close
tolerances

Humidity Source, LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

30

Humidity Source Reverse Osmosis water
Treatment systems. Sizes range from industrial
capacities down to individual room units.

umidity Source

H

Sample specifications for WJ-228

Quality, Selection, Support

Cold water centrifugal atomizing type humidifier and mounting
plate for installation in bottom of a straight run of air duct that is
under either negative or positive pressure. Water reservoir
(normally) is suspended from mounting plate to hang below
bottom of duct and permit external plumbing connections for feed
to automatic water valve within the reservoir. Atomizer and
moisture diffusing ring stand in reservoir so that air will pass
through, around, and over the atomizer. Atomizer include motor,
impeller, disc and breaker comb to produce a fine vapor.
Humidifiers also includes a rim slide to regulate the air stream
entering the atomizing section. All water exposed parts to be
copper, brass, non-ferrous alloys and stainless steel. Operation
is by means of wall mounted (P825) or return air duct mounted
line voltage humidistat. Multiple units may be operated with one
humidistat by using relay transformer. See installation
instruction.

MODEL

WJ-228

SPECIFICATIONS

CAPACITY WEIGHT

Moisture Output – 12lb./hr. Net: 24 lb.

CARTON SIZE Operating: 33 lb.
19 ¼’ X 17 ¼’ X 21

Electric Motor
.76 amps, 115 volts, 1 ph – 50/60 hz
WATER CONNECTIONS & PRESSURES

Supply: 1/8 in. Male Pipe Thread

TOP

Overflow:1/4 in. Female Pipe Thread

Operating Pressure Range: 10-100 psig

.

Mounting plate supplied with unit.

These specifications are subject to change

VIEW

Mounting plate
supplied

Shipping: 27 lb.

without notice.

SIDE
VIEW

Disk

Vapor Making
Comb

Pump Tube

CENTRIFUGAL ATOMIZER

The heart of Humidity Source humidifier
units is the patented masterfully engineered
Centrifugal Atomizer. Water is drawn by
centrifugal force up through the rotating
impeller cap and pump tube, then spun
across the disk rotating at 3250 RPM
striking the Vapor-Maker Comb creating an
extremely fine vapor. An integral fan under
the rotating disk blows the vapor out of the
unit resulting in a fine atomized vapor that
is quickly absorbed into the air.

Overflow

Supply

Impeller
Cap

31

DUCT HUMIDIER APPLICATION DATA

Humidity Source positive capacity atomizing humidifiers produce moisture that will quickly evaporate in the surrounding air
if there is no impingement. Strict attention to minimum clearance dimensions must be adhered to in order to avoid
condensation.

ABSORPTION DISTANCE

Duct Air Velocity 800 1000 1200
ft/min.
Absorbtion Distance 8' 10' 12'
Required

Based on 65 F minimum and 30% R.H. maximum. Longer distances apply for lower temperatures or higher humidity.

Unit must be placed far enough downstream of an elbow or blower to prevent turbulence, normally 8’ is sufficient.

SPECIAL REQUIREMENTS

Where minimum straight run distance are not available, one or more of the following procedures may apply:

1. Ins

2. Ins

3. Install reduced capacity impeller cap on bottom of pump tube. Available from Humidity Sourc

4. Rotate rim slide (rim unit).

5. Seal all duct seams in 8’ section downstre

6. Install perforated metal baffle upstream of humidifier to reduce turbulence an

7. If water supply is hard, install a demineralizer to prevent “ white dust” from being formed.

8. Install temperature control to prevent operation below 65 F minimum temperature.

tall a hi imit duct humidistat at point of obstruction. Set at 95%. Barb man Co. Model HC-201. gh l er Col
tall moisture eliminator in duct at point of obstruction supplied by sheet metal fabricator. Pipe to drain.

e.

slide built into

am of unit and install duct drain.

d stratification of air flow.

14”
Minimum

14”
Minimum

24”
Minimum

Elevation View

Absorption
Distance

Perforated Metal Baffle

Elevation View

Absorption
Distance

Absorption
Distance

Plan Viewn View

24”
Minimum

Pla

Absorption
Distance

Elevation View

Perforated Metal Baffle

Absorption
Distance

w

24”
Minimum

Absorption
Distance

Plan Vie

Humidity Source, LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

973-916-1001 FAX: [phone] TEL

32

umidity Source

H

Quality, Selection, Support

MODEL WJ-228

INSTALLATION AND MAINTENANCE INSTRUCTIONS

These installation instructions have been provided to assist the installer in
making a good installation. Inside you will find a step by step typical installation,
pictured in road map fashion for your convenience. Please familiarize yourself
with these instructions before installing your Humidity Source Quality Humidifier.

APPLICATION

The model WJ-228 humidifier has been designed to discharge the mist directly
into the air stream of either supply or return ducts. Check to insure that the air in
the duct has a high enough temperature and low enough humidity to allow for
complete absorption of the mist. Reduce output if necessary.

Minimum air flow requirements for proper operation are:

WJ-228 1200 CFM

Humidity Source positive capacity atomizing humidifiers produce moisture that
will quickly evaporate in the air duct if there is no impingement of water particles
against barrier surfaces before the vapor is completely absorbed. It is important
that minimum clearance be adhered to as shown in these installation instructions
to prevent any condensation from forming in the duct.

READ AND SAVE THESE INSTRUCTIONS

33

Typical Installation For Model

Reservoir

Rim Slide

Remove humidifier components from
box and identify them.

18” X 11” access cut out.

Center mounting plate and
scribe opening on bottom
of duct. Cut out opening.

Insert reservoir and rim slide. Turn the reservoir so
that the air flow markings are in line with the arrow
on the mounting plate and the rim slide slot faces
the direction of air flow.

Motor Pan

Float Valve

Mounting Plate

WJ-228

Diffuser

Mark and drill (4) #30
holes for #10 sheet
metal screws

Air Flow

The examples shown below are based on air velocity in the duct of 800 ft/min.
For increased velocities add 1’ to the minimum obstruction distance for each
100ft/min. Distances based on 65 deg. F and 30% R.H. max.

Air Flow

24” Min.

8” Minimum To Any Obstruction
In Duct

Minimum duct height: WJ-228 14”
Minimum duct with: 24”
Note direction of air flow. Establish minimum duct size and minimum
Straight run requirements before proceeding.

Air Flow

Place mounting plate inside of duct noting
arrow indicating air flow direction. Secure plate
with (4) #10 sheet metal screws

Air Flow

Overflow fitting

Water supply connection

Water connections

Insert float valve assembly (see Fig 1) and over flow connection
with washers on the outside of the reservoir . Connect a water
line to 1/8” MPT on the float valve and if overflow is necessary
connect to the ¼” FPT overflow fitting. Flush water line of
impurities before making the water line connection to the float
valve. Turn on the water supply and adjust the water level to ½”
below the overflow fitting. See Fig 1 for float valve adjustments.

34

er

C

Braided Cable

Insert atomizer unit into reservoir making sure it is
centered and the float valve is clear of the motor pan legs
and moves freely. Position the braided cable so that it
extends from the left side of the slot and through the hole
on the mounting plate.

FLOAT VALVE

Float valve adjustments should be made so that
the water level is ½” below the overflow

Humidifi

Typical Electrical Wiring Diagram

Junction
Box

120 VAC

(220 VAC for WT-B)

To complete the installation insert diffuser and position as
shown with open gap facing air flow. Be sure diffuser is
properly seated. Refer to the electrical diagram below for
power connections.

Fig 1

Humidity Source P-825
Wall Humidistat

H

L

PC-301 Air
Flow Switch

HC-201 High Limit
Duct Humidistat

35

Reservoir Wall

Washer

Mounting Nut

1/8” MPT

Adjusting
Thumb Screw

For humidistats
and controls, see
“accessories”

A

Specifications for Model WJ-228

“A” Dimension 19”
“B” Dimension 17”
“C” Dimension 12 13/16”
“D” Dimension 9 7/8”
“E” Dimension 4”
Duct Height 14” Min.
Duct Width 24” Min
Access Panel Size 18” x 11”
Power Required 1 ph. 50/60 Hz 115v
Power Consumption 90 watts
Operating Weight 29 lbs.
Operating Water Pressure 10-100 psig

Cleaning Of The Atomizing Unit

MAINTENANCE

All natural water systems have a certain amount of
water solids which will accumulate in the atomizing
unit of your humidifier. Over time this accumulation
will reduce the efficiency and out-put of the
humidifier. When this happens it will be necessary
to clean the atomizing unit pump tube.

B

Air Flow

D

E

C

Before cleaning be sure to disconnect electrical power from the humidifier. Carefully lift
atomizing unit out of reservoir. To remove the impeller cap, hold a flat file or the back of
a table knife flat against the side of the tube and gently tap the cap which is held in
place by a pressed fit. After the cap has been removed, the inside of the tube is visible
and it is simple matter to clean it with a piece of cloth on the end of a screwdriver or a
small round brush.

There are three ports through which water makes its way from the pump tube to the top
of the rotating disc. These ports should be cleaned out with the aid of a wire.

Replace the impeller cap by tapping it evenly back into place, using plastic handle on
screwdriver.

Inspect float valve assemble periodically, & replace when necessary, or every few
years. Should this humidifier need service or repair some time in the future, return only
atomizing unit direct to the factory.

Humidity Source LLC

90 Dayton Ave.Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

36

Humidifier Accessories

Humidistats, Sensors & Controls

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity

And/or close

tolerances

W351 ELECTRONIC HUMIDITY

Reverse Osmosis Demineralizers

Humidity Source Reverse Osmosis Water

Treatment systems. Sizes range from industrial capacities
down to individual room units.

CONTROL With Digital Display

RO-24

RO-120
RO-450
RO-900

Humidity Source LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

37

38

38

umidity Source

H

Sample specifications for WF-HH-229

Cold water centrifugal atomizing type humidifier and mounting
brackets designed for through the wall installations. Water
reservoir includes float valve to automatically regulate water
level. Humidifier includes motor, impeller, disk and breaker
comb to produce a fine vapor. Rotating parts shall be
electronically balanced to eliminate vibration. Tubes shall be
employed to direct moisture into vertical or horizontal duct
systems and equalize humidifier internal air pressure to that of
the duct. All water exposed parts to be copper, brass, or non­ferrous alloy. Vapor output of the humidifier shall be constant
while in operation and shall not depend on the temperature of
the air or water. Humidifier(s) shall be Model WF-HH-229 as
manufactured by Humidity Source. Must be UL listed for US and
Canada.

Quality, Selection, Support

MODEL

WF-HH-229

SPECIFICATIONS

CAPACITY Electric Motor

Moisture Output – 2 lb./hr. 50 Watts

115 volts, single phase, 60 Hz.

WEIGHT
Net: 17 lb. CARTON SIZE

Shipping: 21 lb. 15 ½” X 12 ¼” X 15 ¼”

Operating: 25 lb.

WATER CONNECTIONS & PRESSURES UNIT SIZE

Supply: 1/8” Male Pipe Thread Height: 11 ½”

Overflow: ¼” Female Pipe Thread Diameter: 10 ¼”
Operating Pressure Range: 10-100 psig

Disk

CENTRIFUGAL ATOMIZER

Vapor Making
Comb

Pump Tube

Impeller
Cap

The heart of Humidity Source humidifier units is the patented
masterfully engineered Centrifugal Atomizer. Water is drawn
by centrifugal force up through the rotating impeller cap and
pump tube, then spun across the disk rotating at 3250 RPM
striking the Vapor-Maker Comb creating an extremely fine
vapor. An integral fan under the rotating disk blows the
vapor out of the unit resulting in a fine atomized vapor that is
quickly absorbed into the air.

39

Humidity Source POSITIVE CAPACITY ATOMIZING humidifiers produce

pply

moisture that will quickly be absorbed in to the air stream, provided there is no
impingement. It is therefore most important that all directions and minimum dimensions
be strictly adhered to In order to avoid condensation.

TYPICAL THROUGH THE

WALL INSTALLATION

Discharge Tube
Extends Through

Wall

Wall

SIDE VIEW

TOP VIEW

A

Water
Su

B

Humidifier Discharge Must
Be A Minimum Of 6 ft.
From Opposite Wall and
Floor and 1 ft. From

Overflow

C

Mounting
Bracket

D

Ceiling

Note: Drawings not to scale

ACCESSORIES

A. Duct mounted, high limit humidistat.

Model No. HC-201

B. Wall mounted humidistat. Model No.
P825.
C. Johnston Controls electronic humidistat.

Model No. W351 with remote sensor (E)

E

D. Air duct pressure switch. Model No.

PC-301

Humidity Source, LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

TEL [phone] FAX: [phone]

40

g

H

Quality, Selection, Support

MODEL WF-HH-229

umidity Source

INSTALLATION AND MAINTENANCE INSTRUCTIONS

PRELIMINARY CONSIDERATIONS

Before proceeding with the installation, the location of Model
WF-HH-229 Humidifier must be selected. There are several
through-the-wall considerations that can be chosen, utility or
equipment rooms, a dead space area, closet space, etc.

Step 1. Select a location for your humidifier so that there will
be 6 feet minimum space between the Escutcheon side if the
wall and the nearest wall or obstruction. There should also be
6 ½ feet minimum distance to the floor and at least 12 inches
from the ceiling (see Figure A).

minimum distance guidelines may result in moisture on
the walls or ceiling.

Step 2. Use the Mounting Bracket as a template and mark the
location for (2) ½” diameter holes and slot for humidifier
discharge tube (Figure B). Drill the ½’ holes and cut the slot in
the wall board on the unit side only. Cut a 3 ½” hole in the
Escutcheon or unit discharge side of the wall to allow the
extension tube to protrude through the wall. Establish a 2” per
foot pitch toward the humidifier when cutting the 3 ½” hole.

Step 3. Fasten the Mounting Bar to the top of the Mounting
Bracket with (2) ¼” bolts as shown in Figure C. Mount the
entire assembly to the wall with (2) #12 wood screws through
the Mounting Bracket.. The Mounting Bar is sized to match
normal wall stud spacing (16” centers). Insert (3) rubber feet in
the bottom of the mounting plate, with rubber bumper up

Finished Ceiling

Escutcheon

Floor

6 ft. MI N

Figure A

Failure to follow the

12 “ MIN

6.5 ft. MIN

and attach nuts to the feet. Tighten the front nut and leave the
(2) rear nuts loose.

Wall Studs

Figure C

Mounting Bar

(2) #12 Wood Screws

(2) ¼” Bolts

Step 4. Place the Reservoir assembly on the Mounting
Bracket. Run a ¼” copper or PVC tubing line from an
appropriate water supply to the Reservoir float valve fitting. It is
recommended that a shut off valve be located at the water
supply connection in case of water leaks and for easy removal
of humidifier for maintenance. Turn on the water and adjust
the Reservoir water level to 1” below the over flow port using
the float valve adjusting thumb screw (Figure D).

Float Valve Operation

Float Assembly Details

Reservoir Wall

Pressure Range

10-150 psig

Figure D

Mounting
Washer

Mounting

Nut

1/8” MPT

Water Lever
Adjusting Screw

Finished Ceiling

½” Holes

Mounting Bar

Step 5. Cut the Extension Tube to the correct length
depending on your wall thickness. Allow sufficient Extension
Tube length (¾”) protruding through the wall to mount the
Escutcheon. Do not cut the Extension Tube at the rubber seal
end and smooth all rough edges after cutting.

Trace and Cut

12” Min.
From Center
Of Cut Out
To Ceiling

Wall Studs

Out of Unit Side
Wall

Use Mounting
Bracket as
Template

Fi

ure B

Step 6. Slip Rubber Sealer end of the extension tube all the

way over the Vapor Tube. Roll the top layer of the Rubber
Sealer off the extension tube and on to the Vapor Tube (Figure
E).

41

Vapor Tube

0

Extension Tube

Vapor Dome

Figure E

Slip rubber sealer end of extension tube all the way over
vapor tube of dome. Peel top layer of rubber sealer off the
extension tube and on to the vapor tube.

Rubber Sealer

Vapor Tube

Be sure that the rubber seal over laps the extension tube
and the extension tube overlaps the vapor tube as shown in
the illustration above.

Dome Strap

Rubber Feet

Rubber Sealer

This Joint
Must be Sealed

Extension Tube

Figure E
Enlarged View

Escutcheon Side

5

Wedge If
Necessary
to Achieve
Pitch

Figure F

Pitch

Step 7. Insert the Vapor Dome with Extension Tube through
the wall from the humidifier side as shown in Figure F. The
Extension Tube should have a downward pitch toward the
humidifier of approximately 1” per foot. Place Vapor Dome on
top of Reservoir and connect Dome Strap. Water placed in the
Extension Tube should run back into the humidifier, if not
wedge a piece of spacing material (like a piece of wood) under
the Extension Tube to raise it.

Step 8. Adjust the two rear rubber feet on the Mounting
Bracket to snug the Reservoir up against the front rubber foot
to keep the reservoir firmly in place.

Step 9. Assemble the Escutcheon to the protruding Extension
Tube as shown in the two steps shown in Figure G.

Step 10. Make electrical connections as shown in Figure H.
The Humidity Source Humidifier is now ready for many years
of service.

Escutcheon

Extension Tube

Wall

Figure G

Wiring Diagram For P-825 Humidistat

Humidifier

Receptacle

Humidity Source P-825
Wall Humidistat

H

L

C

120 VAC

L

L1

2

Neutral Hot

Figure H

42

Float Valve Operation

Pressure Range

10-150 psig

Figure 1

Screen

Remove impeller

cap

2-B

Reservoir Wall

Atomizing Unit

2-A

FIGURE 2

Adjusting
Thumb Screw

Pump Tube

Impeller Cap

Sight into bottom

of tube

These openings

must be clear

2-C

Mounting
Washer

Mounting
Nut

1/8” MPT

OPERATION

Positive capacity atomizing humidifiers produce a mist that
will quickly evaporate into the air if there is no impingement
of water particles against barrier surfaces before the water
particles against barrier surfaces before the water is
completely absorbed. Strict attention to minimum clearance
dimensions must be adhered to in order to avoid
condensation.

MAINTENANCE

Unplug electric cord & remove dome. Carefully lift atomizing
unit out of reservoir (Figure 2). Hold atomizing unit firmly
and remove the perforated screen (2-A) by turning it slightly
to the left until the four lugs are in line with the slots. To
remove the impeller cap (2-B), hold a flat file or the back of a
table knife flat against the side of the tube and gently tap the

cap which is held in place by a pressed fit. After the cap has
been removed, the inside of the tube is visible and it is
simple matter to clean it with a piece of cloth on the end of a
screwdriver or a small round brush.

There are three ports through which water makes its way
from the pump tube to the top of the rotating disc (2-C).
These ports should be cleaned out with the aid of a wire.
See drawing on this page.

Replace the impeller cap by tapping it evenly back into
place, using plastic handle on screwdriver.

Remove water from reservoir & rinse. Fill reservoir with
white vinegar or other mild acid solution. Replace dome &
atomizer on reservoir & block outlet of dome with plastic
wrap & a rubber band. Run atomizer for ½ hour or until
minerals are completely dissolved. If necessary, rinse with
diluted chlorine bleach solution. Rinse with clean water and
return to service. For hard water problems, see
“demineralized water” below.

Inspect float valve assemble periodically, & replace when
necessary, or every few years. Should this humidifier need
service or repair some time in the future, return only
atomizing unit direct to the factory.

DEMINERALIZED WATER

If your local water supply has a high mineral content, (call
water company & ask for “total dissolved solids” or T.D.S.)
This mineral will create tiny particles of airborne “white dust”
when the mist evaporates in the air. To eliminate this dust,
use an ion exchange or a reverse osmosis demineralizer.
See Humidity Source data sheets for Reverse Osmosis
demineralizing filters.

43

MODEL WF-HH-229 Replacement Parts

Description

Dome Strap Assembly 079590

Extension Tube 924050

Part Number

Escutcheon 905052

Extension Tube Sealer 905528

Dome 905026

Channel Rubber 905582

Atomizing Assembly WF525/9/2

Rubber Mounts (3) 80096

Impeller Cap 905587

Cylindrical Screen 905543

Float Valve Assembly 079057

Reservoir 905608

Humidifier Accessories

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity
And/or close
tolerances

Humidity Source, LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

44

Humidity Source Reverse Osmosis water
Treatment systems. Sizes range from industrial
capacities down to individual room units.

umidity Source

H

Sample specifications for WT & WT-B

Cold water centrifugal atomizing type humidifier and mounting plate for
installation in bottom of a straight run of air duct that is under either
negative or positive pressure. Water reservoir (normally) is suspended
from mounting plate to hang below bottom of duct and permit external
plumbing connections for feed to automatic water valve within the
reservoir. Atomizer and moisture diffusing ring stand in reservoir so that
air will pass through, around, and over the atomizer. Atomizer include
motor, impeller, disc and breaker comb to produce a fine vapor.
Humidifier also includes a rim slide to regulate the air stream entering the
atomizing section. All water exposed parts to be copper, brass, non­ferrous alloys and stainless steel. Operation is by means of wall mounted
(P825) or return air duct mounted line voltage humidistat. Multiple units
may be operated with one humidistat by using relay transformer. See
installation instruction.

Quality, Selection, Support

MODEL

WT & WT-B

SPECIFICATIONS

CAPACITY: WEIGHT:

Moisture Output – 24lb./hr. Net: 24 lb.

Operating: 37 lb.
Electric Motor:

Model WT: 1.15 amps,115 volts, 1 ph – 50/60 hz WATER CONNECTIONS & PRESSURES:

Model WT-B: .55 amps.230 volts 1 ph – 50/60 hz Supply: 1/8 in. Male Pipe Thread

Overflow:1/4 in. Female Pipe Thread

Operating Pressure Range: 10-100 psig

.

.

Shipping: 39 lb.

TOP
VIEW

SIDE
VIEW

Mounting Plate

Supplied

Supply

These specifications are subject to change

without notice.

Disk

Vapor Making
Comb

Pump Tube

CENTRIFUGAL ATOMIZER

The heart of Humidity Source humidifier
units is the patented masterfully engineered
Centrifugal Atomizer. Water is drawn by
centrifugal force up through the rotating
impeller cap and pump tube, then spun
across the disk rotating at 3250 RPM
striking the Vapor-Maker Comb creating an
extremely fine vapor. An integral fan under
the rotating disk blows the vapor out of the
unit resulting in a fine atomized vapor that
is quickly absorbed into the air.

Impeller
Cap

Overflow

45

DUCT HUMIDIER APPLICATION DATA

Humidity Source positive capacity atomizing humidifiers produce moisture that will quickly evaporate in the surrounding air
if there is no impingement. Strict attention to minimum clearance dimensions must be adhered to in order to avoid
condensation.

ABSORPTION DISTANCE

Duct Air Velocity 800 1000 1200
ft/min.
Absorbtion Distance 8' 10' 12'
Required

Based on 65 F minimum and 30% R.H. maximum. Longer distances apply for lower temperatures or higher humidity.

Unit must be placed far enough downstream of an elbow or blower to prevent turbulence, normally 8’ is sufficient.

SPECIAL REQUIREMENTS

Where minimum straight run distance are not available, one or more of the following procedures may apply:

1. Ins

2. Ins

3. Install reduced capacity impeller cap on bottom of pump tube. Available from Humidity Sourc

4. Rotate rim slide (rim unit).

5. Seal all duct seams in 8’ section downstre

6. Install perforated metal baffle upstream of humidifier to reduce turbulence an

7. If water supply is hard, install a demineralizer to prevent “ white dust” from being formed.

8. Install temperature control to prevent operation below 65 F minimum temperature.

tall a hi imit duct humidistat at point of obstruction. Set at 95%. Barb man Co. Model HC-201. gh l er Col
tall moisture eliminator in duct at point of obstruction supplied by sheet metal fabricator. Pipe to drain.

e.

slide built into

am of unit and install duct drain.

d stratification of air flow.

14”
Minimum

14”
Minimum

24”
Minimum

Elevation View

P

Absorption
Distance

Perforated Metal Baffle

Elevation View

Absorption
Distance

Absorption
Distance

Plan View lan View

24”
Minimum

Absorption
Distance

Elevation View

Perforated Metal Baffle

Absorption
Distance

w

24”
Minimum

Absorption
Distance

Plan Vie

90 Dayton Ave. Suite 58.

Humidity Source, LLC

Passaic, New Jersey 07055 USA

Ph. 973-916-1001 Fax [phone]

46

umidity Source

H

Quality, Selection, Support

MODELS WT and WT-B

INSTALLATION AND MAINTENANCE INSTRUCTIONS

These installation instructions have been provided to assist the installer in
making a good installation. Inside you will find a step by step typical installation,
pictured in road map fashion for your convenience. Please familiarize yourself
with these instructions before installing your Humidity Source Quality Humidifier.

APPLICATION

The model WT humidifier has been designed to discharge the mist directly into
the air stream of either supply or return ducts. Check to insure that the air in the
duct has a high enough temperature and low enough humidity to allow for
complete absorption of the mist. Reduce output if necessary.

Minimum air flow requirements for proper operation are:

WT/WT-B 2000 CFM

Humidity Source positive capacity atomizing humidifiers produce moisture that
will quickly evaporate in the air duct if there is no impingement of water particles
against barrier surfaces before the vapor is completely absorbed. It is important
that minimum clearance be adhered to as shown in these installation instructions
to prevent any condensation from forming in the duct.

READ AND SAVE THESE INSTRUCTIONS

47

Typical Installation For Models

Reservoir

Rim Slide

Remove humidifier components from
box and identify them.

18” X 11” access cut out.

Center mounting plate and
scribe opening on bottom
of duct. Cut out opening.

Insert reservoir and rim slide. Turn the reservoir so
that the air flow markings are in line with the arrow
on the mounting plate and the rim slide slot faces
the direction of air flow.

Motor Pan

Float Valve

Mounting Plate

WT and WT-B

Diffuser

Mark and drill (4) #30
holes for #10 sheet
metal screws

Air Flow

The examples shown below are based on air velocity in the duct of 800 ft/min.
For increased velocities add 1’ to the minimum obstruction distance for each
100ft/min. Distances based on 65 deg. F and 30% R.H. max.

Air Flow

24” Min.

8” Minimum To Any Obstruction
In Duct

Minimum duct height: WT 16”
Minimum duct with: 24”
Note direction of air flow. Establish minimum duct size and minimum
Straight run requirements before proceeding.

Air Flow

Place mounting plate inside of duct noting
arrow indicating air flow direction. Secure plate
with (4) #10 sheet metal screws

Air Flow

Overflow fitting

Water supply connection

Water connections

Insert float valve assembly (see Fig 1) and over flow connection
with washers on the outside of the reservoir . Connect a water
line to 1/8” MPT on the float valve and if overflow is necessary
connect to the ¼” FPT overflow fitting. Flush water line of
impurities before making the water line connection to the float
valve. Turn on the water supply and adjust the water level to ½”
below the overflow fitting. See Fig 1 for float valve adjustments.

48

er

C

Braided Cable

Insert atomizer unit into reservoir making sure it is
centered and the float valve is clear of the motor pan legs
and moves freely. Position the braided cable so that it
extends from the left side of the slot and through the hole
on the mounting plate.

FLOAT VALVE

Float valve adjustments should be made so that
the water level is ½” below the overflow

Humidifi

Typical Electrical Wiring Diagram

Junction
Box

120 VAC

(220 VAC for WT-B)

To complete the installation insert diffuser and position as
shown with open gap facing air flow. Be sure diffuser is
properly seated. Refer to the electrical diagram below for
power connections.

Fig 1

Humidity Source P-825
Wall Humidistat

H

L

PC-301 Air
Flow Switch

HC-201 High Limit
Duct Humidistat

49

Reservoir Wall

Washer

Mounting Nut

1/8” MPT

Adjusting
Thumb Screw

For humidistats
and controls, see
“accessories”

A

Specifications for Models WT/WT-B

“A” Dimension 19”
“B” Dimension 17”
“C” Dimension 14 9/16”
“D” Dimension 12 3/8”
“E” Dimension 4 3/8”
Duct Height 16” Min.
Duct Width 24” Min.
Access Panel Size 18” x 11”
Power Required 1 ph. 50/60 Hz 115v (WT)
1 ph. 50/60 Hz 230v (WT-B)
Power Consumption 132 watts (WT)
127 watts (WT-B)
Operating Weight 37 lbs.
Operating Water Pressure 10-100 psig

MAINTENANCE

Cleaning Of The Atomizing Unit

All natural water systems have a certain amount of
water solids which will accumulate in the atomizing
unit of your humidifier. Over time this accumulation
will reduce the efficiency and out-put of the
humidifier. When this happens it will be necessary
to clean the atomizing unit pump tube.

B

Air Flow

D

E

C

Before cleaning be sure to disconnect electrical power from the humidifier. Carefully lift
atomizing unit out of reservoir. To remove the impeller cap, hold a flat file or the back of
a table knife flat against the side of the tube and gently tap the cap which is held in
place by a pressed fit. After the cap has been removed, the inside of the tube is visible
and it is simple matter to clean it with a piece of cloth on the end of a screwdriver or a
small round brush.

There are three ports through which water makes its way from the pump tube to the top
of the rotating disc. These ports should be cleaned out with the aid of a wire.

Replace the impeller cap by tapping it evenly back into place, using plastic handle on
screwdriver.

Inspect float valve assemble periodically, & replace when necessary, or every few
years. Should this humidifier need service or repair some time in the future, return only
atomizing unit direct to the factory.

Humidity Source LLC

90 Dayton Ave.Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

50

Humidifier Accessories

Humidistats, Sensors & Controls

P-825 Humidistat
Human Hair Element

Standard

W351 Humidistat
Electronic Sensor

For high humidity

And/or close

tolerances

W351 ELECTRONIC HUMIDITY

Reverse Osmosis Demineralizers

Humidity Source Reverse Osmosis Water

Treatment systems. Sizes range from industrial capacities
down to individual room units.

CONTROL With Digital Display

RO-24

RO-120
RO-450
RO-900

Humidity Source LLC

90 Dayton Ave. Suite 58, Passaic, New Jersey 07055

Phone [phone] e-mail [email protected]

51