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" H2 0.
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.
SPECIFICATIONS
CAPACITY
Moisture Output - 3 Ib'/hr.
Electric Motor
50 Watts
115 volts, single phase, 60 Hz.
WEIGHT
Net: 17 lb.
Shipping: 19 lb.
Operating: 20 lb.
CARTON SIZE
15 Yz" X 12 %" X 15 %"
WATER CONNECTIONS & PRESSURES
Supply: 1/8" Male Pipe Thread
Overflow: %" Female Pipe Thread
Operating Pressure Range: 10-1 00 psig
UNIT SIZE
Height: 11 Yz"
Diameter: 10 %"
Disk
Vapor Making
7 + - - - Comb
Pump Tube
Impeller
Cap
CENTruFUGALATOM~ER
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.
Humidity Source POSITIVE CAPACITY ATOMIZING humidifiers produce
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.
Side View
Discharge Tube
Top View
27/16" 1.0.
-~
11------;
I
_f ~
/"
13112"
~-+--11 314"
Water
Supply
I\
Air Intake
-------Is
Mounting
Bracket
Overflow
Duct Location Requirements
12'Minimum
12'Minimum
-I
A
12'Minimum
6'0'
Minimum
_ _ 6'0'
Minimum-
ACCESSORIES
C
A.
Duct mounted, high: limit humidistat.
Model No. HC-2011
B. Wall mounted humidistat. Model No.
P825.
C. Johnston Controls electronic humidistat.
Model No. W351 with remote sensor (E)
D. Air duct pressure switch. Model No.
PC-301
!
NOTE: MAXIMUM STATIC AIR PRESSURE
ALLOWED AT SUPPLY IS .25" H2 0.
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.
Extension
1-=--8
Tube /
--y----~
Water
Connection
Air Intake
':....
T
Rubber
Foot --...........
-
~~~rfIOW
5. Assemble the mounting plate to the duct with (2) Y. -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 50 to prevent water from dripping
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 %" 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.
Discharge
- - - , _ Mounting
Plate
See Enlarged
View Below
Reservoir Air
Intake Tube
Figure A
Extension Tube
~vaporDome
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 ~
This Joint
Must be Sealed
Extension Tube
Vapor 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.
Positive capacity atomizing humidifiers produce
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.
Water Supply Connections
Cold Water Pipe
Saddle Valve /
Float Assembly Details
Mounting
Washer
Reservoir Wall
Float Valve Operation
Pressure Range
10·150 psig
Mounting
Nut
Instructions For
Connecting
Water Supply
~
Yt" Tubing Water
Line
1/8" MPT
Water Lever
Adjusting Screw
..
~
Fittings As
Required
Figure 0
Reservoir
Figure C
Duct Location Requirements
Receptacle
Wiring Diagram For
P-825 Humidistat
o
H
C
120 VAC
L2
Figure F
L1
Neutral
Hot
(Connect To Furnace
Blower Motor)
Humidity Source P-825
Wall Humidistat
Your Humidity Source humidifier is a precision-built
instrument that, given proper care, will provide years of
dependable service. All that is required is periodic cleaning
during the humidifying season when your humidifier is most
used. Depending on local water conditions, mineral solids and
other matter may accumulate in various parts of the unit.
These accumulations must be removed so that water flows
freely for efficient operation of the humidifier. A reverse
osmosis water treatment system will remove minerals and
greatly reduce the need to clean the humidifier.
CLEAN YOUR HUMIDIFIER AT END OF THE HEATING
SEASON. LEAVE THE UNIT EMPTY AND DRY
DURING THE SUMMER MONTHS. REFILL AGAIN IN THE
FALL. INSPECT AND CLEAN (IF NEEDED) ONCE OR
TWICE DURING THE HEATING SEASON. IF USED ALL
YEAR,
INSPECT AND
CLEAN
AS
NECESSARY
QUARTERLY
STEP 1.
DISCONNECT ELECTRICAL PLUG FROM HOUSE LINE.
TURN OFF WATER SUPPLY.
STEP 2.
REMOVE DOME FROM UNIT, AFTER FIRST REMOVING
DOME STRAP. The dome rests on the copper motor pan; it
lifts up and away from the duct and the unit. The vapor tube
and extension tube are connected by the rubber tube seal and
will come out together.
STEP 3.
LIFT OUT THE ATOMIZING UNIT. This rests freely in the
reservoir pan and lifts out easily.
Dome
Atomizing
Unit
Pump
Tube
~
oo..
Of Pump Tube
Showing Apertures
Reservoir
STEP 4.
CLEAN THE ATOMIZING UNIT. Do not submerge unit in
water or the atomizer motor will be damaged. First, remove
the cylindrical screen. Twist slightly out of lock position and
remove. Next, remove the impeller cap from the pump tube by
tapping lightly on edge of cap with a flat object (such as a file
or flat screwdriver). Do not tap on face of cap, this can
damage its ability to pump water. Insert a pointed scraper or
pipe cleaner through the open end of the pump tube into the
three apertures located inside the pump tube (you may not
actually see the apertures but you can "feel" them). Gently
poke and free the three apertures of any solids that may have
accumulated. Scrape out waste materials along the inner
walls of the pump tube. Flush out pump tube with low
pressure water being very careful to not force water into the
atomizer motor. Replace impeller cap on pump tube by
tapping into place around edge of cap, again, do not tap face
of cap. Spin the pump tube by hand to insure it rotates freely.
Replace screen by twisting into lock position. Brush-clean the
vapor maker comb with a small wire brush or old tooth brush.
Rinse out motor pan being careful not to get water into the
motor.
STEP 5.
EMPTY AND CLEAN RESERVOIR of all liquids and waste
materials. Use white vinegar to dissolve minerals. Care should
be taken so as not to disturb floats or float valve.
STEP 6.
REASSEMBLE THE UNIT. Replace the atomizing unit in the
reservoir. Place the dome on the motor pan with the discharge
exhaust and extension tube positioned in line with the air
intake tube on the reservoir. Set entire unit back on mounting
plate positioning discharge tube and air intake tube through
the duct openings. Be sure the angled cut of the intake tube is
pointing toward the duct air flow.
TURN ON YOUR WATER SUPPLY, PLUG IN YOUR
ELECTRIC CORD AND YOUR HUMIDIFIER IS AGAIN
READY FOR THE NEXT HUMIDIFING SEASON.
MODEL WF-HP-226 Replacement Parts
Part Number
Description
c-t//I'------I//~
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
Float Valve Assembly
079057
Reservoir
905062
Humidifier Accessories
P-825 Humidistat
Human Hair Element
W351 Humidistat
Electronic Sensor
Humidity Source Reverse Osmosis water
Treatment systems. Sizes range from industrial
capacities down to individual room units.
r---",~-...,~
~
~
I.
Standard
For high humidity
And/or close
tolerances
'--