Honeywell HE440A User manual

PRODUCT DATA/OWNER’S GUIDE
68-0265EF-3
HE440A
Steam Power Humidifier
APPLICATION
HE440A Steam Power Humidifier uses a thermal fan interlock
control to provide whole house humidification on demand.
A two-stage water treatment system keeps the reservoir
clean, maintains operation and reduces maintenance. Steam
power humidifiers work with furnaces, heat pumps, setback
thermostats and virtually any Honeywell humidity control.
Use Honeywell H1008 Automatic Humidity Control for optimal
performance.
FEATURES
• Humidifies the air without a call for heat from the
thermostat so relative humidity fluctuates less,
optimizing homeowner comfort.
• Two-stage water treatment system keeps reservoir
clean; maintains operation and reduces maintenance.
• Low water cut-off switch, built-in overflow and thermal
cut-off switch protection are integral safety features.
• Capable of humidifying a large area.
• Ideal for homes with extensive woodwork, hardwood
floors, antiques, oil paintings, leather furniture, pianos,
and fine collectibles.
• Compact size allows easy installation.
• Includes easy-to-use humidity control that mounts on
the wall or duct for more installation flexibility.
Contents
Application/Features..........................................................1
Specifications/Ordering Information ..................................2
Installation .........................................................................3
Wiring ................................................................................5
Plumbing ...........................................................................6
Operation...........................................................................7
Maintenance......................................................................8
Checkout/Troubleshooting.................................................9
Replacement Parts............................................................10

HE440A STEAM POWER HUMIDIFIER
68-0265EF-3 2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
Capacity:
HE440A:12 gallons per day (gpd) or 45 liters per day (lpd).
Humidified Area:
For precise sizing and product selection, use the Honeywell
HumidiCalc™ Humidifier Sizing software. If unavailable,
refer to Table 1.
Internal Heating Source:
Nickel-plated brass sheathed element:
HE440A: 120 Vac, 1.5 kW, 12.5A.
Duct Opening (Height x Width):
8-1/2 in. x 11-1/2 in. (215 mm x 290 mm).
Dimensions:
See Fig. 1.
Fig. 1. HE440A dimensions in in. (mm).
Approvals:
Underwriter’s Laboratories Inc: Listed 56BL.
Canadian Underwriter’s Laboratories: Listed 56BL.
Air Conditioning and Refrigeration Institute Tested:
Standard 610.
Models:
HE440A TRADELINE ® Steam Power Humidifier package
includes select hardware and H8908B Humidity Control
and two-stage water treatment system with reverse
osmosis (RO) membrane and chlorine filter.
Accessories:
C7089H Outdoor Temperature Sensor for use with H1008.
H1008A Automatic Humidity Control with HumidiCalc™
Software (software calculates dewpoint to prevent
moisture condensation).
H8908B Convertible Humidity Control (included with steam
power humidifier).
50-8578 HumidiCalc™ Humidifier Sizing Software
(software calculates required humidifier capacity for
application).
Table 1. Size of Humidified Area.
5-1/2 (140)
8-1/2 (216)
6-3/4 (171)
12-5/8 (302)
10-1/2 (267)
13-1/4 (336)
M20325
HUMIDIFIER
HUMIDIFICATEUR
House
Description
Air Changes
(per hour)
Humidified Area
(sq ft) (sq m)
Loose Two 1,415 131
Average One 1,970 183
Tight One-half 3,095 288

HE440A STEAM POWER HUMIDIFIER
368-0265EF-3
INSTALLATION
When Installing this Product ...
1. Read these instrucitions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the rating given in the instructions and on the
product to make sure the product is suitable for your
operation.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation.
Select Location and Mounting Configuration
Steam Power Humidifier
There are three typical mounting configurations:
• Horizontally, under at least an 11 in. (280 mm) wide duct,
using the mounting bracket (preferred mounting method).
• Horizontally, under a reinforced duct.
• Horizontally, under a duct extension, using the mounting
bracket.
Select the appropriate mounting method and follow these
mounting instructions. (See Fig. 2 through 4.)
— Select a location where the humidifier can be plugged in
without an extension cord. (The preferred installation
location is on the warm air side of the furnace.)
— If that location is not possible, mount the humidifier a
minimum of 6 ft (1.8m) upstream from the furnace filter.
— Depending on the location selected, additional duct
reinforcement may be necessary because the humidifier
weighs 18 lb (8 kg) when filled with water.
Fig. 2. Mounting humidifier horizontally under duct
using mounting bracket.
Fig. 3. Mounting humidifier horizontally under duct.
Fig. 4. Mounting humidifier horizontally under duct
extension using mounting bracket.
M20326
HU
MI
D
IFIE
R
HU
MI
D
IFI
CA
TE
UR
MOUNTING BACKET
SUPPORT
M20327
HU
MI
D
IFIE
R
HU
MI
D
IFI
CA
TE
UR
SUPPORT
M20328
HUMIDIFIER
HUMIDIFICATEUR
MOUNTING
BACKET
TURNING VANE
DRAIN
PAN
TO DRAIN

HE440A STEAM POWER HUMIDIFIER
68-0265EF-3 4
Two-Stage Water Treatment System
Mounting holes are provided for two mounting configurations:
• Between two exposed wall studs.
• Wall mounted.
NOTE: Do not mount on duct or furnace cabinet.
Choose a location convenient for running a drain line, water
supply and wiring between the humidifier, water treatment
system and equipment fan.
WARNING
Electrocution, Heavy Equipment and Chemical
Hazard.
Can cause death, blindness, water damage to
home and heater failure.
Do not cut into any air conditioning or electrical line.
Mount the humidifier in level position to avoid water
damage and heater failure.
Wear safety glasses when cutting or drilling.
Reinforce duct, as necessary, to ensure stability.
CAUTION
Steam Condensation, Fire and Freezing Water
Hazard.
Can cause fan or limit control failure or result in
water damage in home.
Do not install humidifier where return air duct sidewalls
are constructed of wood (floor joist).
Do not install humidifier where temperature is lower
than 40°F (4°C) or higher than 160°F (71°C).
Mounting Steam Power Humidifier
Mount Horizontally Using Mounting Bracket
(Preferred Mounting Method)
IMPORTANT
Be sure duct is at least 11 in. (280 mm) wide to use
this mounting method.
The duct is the strongest when using the mounting bracket
method because less duct reinforcement is required to support
the bracket using this bracket location. It is important to
evaluate if reinforcement is necessary to help support the
weight of the humidifier and keep it level.
1. Measure and mark an 8-1/2 in. (215 mm) x 11-1/2 in.
(290 mm) outline on the bottom of the duct in the desired
location.
2. Drill 3/8 in. hole (10 mm) within the outlined mounting
hole location. See Fig. 5.
IMPORTANT
Be sure to carefully cut around the marked lines.
3. Use the tin snips to cut around the outline.
4. Remove the sheet metal.
5. Place the two 8-1/2 in. (215 mm) S-cleat pieces
(provided) on the narrow sides of the rectangular
opening so the opening (slot) protrudes down and out
from the duct.
6. Place the 11-1/2 in. (290 mm) piece of S-cleat on
the long side of the rectangular opening closest to the
center of the duct so the opening (slot) shows below
the duct.
7. Use two machine screws and nuts (provided) to attach
the mounting bracket (L-shaped with six holes) to the
top/front surface of the humidifier. (The humidifier is now
ready for mounting.)
8. Slide the humidifier tabs into the installed S-cleat. Be
sure the back tab engages completely with the S-cleat
and the mounting bracket touches the side of the duct.
9. Using the mounting bracket as a guide, drill three
7/64 in. (3 mm) holes through the duct.
10. Secure the humidifier to the duct with three no. 8 sheet
metal screws (not provided).
Fig. 5. Mounting hole location.
Mount Horizontally on Reinforced Duct
This method usually requires duct reinforcement to support the
humidifier weight and keep it level. See Fig. 3. The mounting
bracket is not used.
1. Measure and mark an 8-1/2 in. (215 mm) x 11-1/2 in.
(290 mm) outline on the bottom of the duct in the desired
location.
2. Drill 3/8 in. hole (10 mm) within the outlined mounting
hole location.
IMPORTANT
Be sure to carefully cut around the marked lines.
3. Use the tin snips to cut around the outline.
4. Remove the sheet metal.
5. Place the two 8-1/2 in. (215 mm) S-cleat pieces on the
narrow sides of the rectangular opening so the opening
(slot) protrudes down and out of the duct.
6. Place the 11-1/2 in. (290 mm) piece of S-cleat on the
long side of the rectangular opening, opposite the two
holes previously drilled. Position so the opening (slot)
protrudes down and out of the duct.
7. Slide the humidifier tabs into the installed S-cleat. Be
sure the back tab engages completely with the S-cleat.
8. Secure the humidifier to the duct with two no. 8 sheet
metal screws (not provided).
M20329
3/4 IN. (19 MM)
FROM EDGE

HE440A STEAM POWER HUMIDIFIER
568-0265EF-3
Mount Horizontally on Vertical Duct
Horizontal mounting on a vertical duct requires the installation
of a duct extension. See Fig. 4. Additional duct reinforcement
may also be necessary to help support the humidifier weight
and keep it level. Create and install the duct extension.
Then follow steps 1 through 10 in Mount Horizontally Using
Mounting Bracket section to complete installation.
Place a drain pan correctly connected to a suitable drain below
the humidifier. See Fig. 4.
Mount Two-Stage Water Treatment System Bracket to
Wall
NOTE: Be sure bracket is level.
Use four screws (not provided) to secure mounting bracket to
exposed wall studs or flat wall through mounting holes
provided. See Fig. 6.
Fig. 6. Mounting water system on wall.
NOTE:
— Be sure there is an accessible drain near the water
treatment system.
— Plan system location considering 20 ft (6m) cable
(provided) to connect water treatment system to
humidifier.
— Be sure there is adequate clearance above and
below the system to replace the filters. See Fig.12.
WIRING
All wiring must comply with local codes and ordinances. When
selecting a location for mounting the humidifier, be sure
connections can be made to the power source without using an
extension cord.
WARNING
Voltage or Fire Hazard.
Can cause death or fire.
Use a receptacle rated at 120 Vac, 15/20A (NEMA
configuration 5-15R) for the HE440A Humidifier.
Equipment Fan Applications
CAUTION
Moisture Condensation and Wiring Hazard.
Moisture can destroy furnace electronic controls
and miswiring can burn out electrical components.
Do not alter any heating and cooling system functions.
Be sure to wire only the system fan.
See wiring diagrams in Fig. 7-9 for typical wiring applications.
Fig. 7. Typical wiring diagram for humidifier in single-
speed fan applications without air conditioning (switching
through external relay).
Fig. 8. Typical wiring diagram for humidifier in dual-speed
fan applications with air conditioning.
M20330
BRACKET AND HOLES (4)
FOR MOUNTING ON STUDS
HOLES (4) FOR FLAT
WALL MOUNTING
1
1
2
3
STEAM
HUMIDIFIER
TRANSFORMER
NOT SUPPLIED
EQUIPMENT
BLOWER
N.O.
BLACK
WHITE
RELAY NOT
SUPPLIED
FAN LIMIT CONTROL
L2
L1
(HOT)
24V WIRING.
2R8222D1014 RECOMMENDED.
3AT2DA1123 RECOMMENDED. M20331
FAN
WIRING
SOLENOID
WIRING
HUMIDISTAT
TERMINALS
1
STEAM
HUMIDIFIER
TRANSFORMER
NOT SUPPLIED
EQUIPMENT
BLOWER
LOW
SPEED
N.C.
N.O.
COOL
HEATBLACK
WHITE
RELAY NOT
SUPPLIED HIGH
SPEED
G CONTACTOR
FAN LIMIT CONTROL
L2
L1
(HOT)
M20332
FAN
WIRING
SOLENOID
WIRING
HUMIDISTAT
TERMINALS
124V WIRING.
2
2
R8222D1014 RECOMMENDED.
3
3
AT2DA1123 RECOMMENDED.

HE440A STEAM POWER HUMIDIFIER
68-0265EF-3 6
Fig. 9. Typical wiring diagram for humidifier in single-
speed fan applications without air conditioning (switching
through G contactor).
The humidifier has a sealed switch with a thermostatic sensor
that is designed only for low voltage applications. The sealed
switch is attached to the humidifier wall and is wired through a
thermal switch fan plug. The switch is preset to turn on the fan
when the water temperature is 170°F (76°C) and turn off the
fan when the water temperature falls below 120°F (50°C).
Heat Pumps
No wiring diagrams can be suggested due to many variations
and wiring complexity of heat pumps. If humidifier control fan
operation is desired, be sure to design a safe control circuit
using equipment diagrams and tracing the equipment wiring.
In heat pump applications, a fan sail switch must be installed
due to almost continuous system fan operation. Wire the fan
sail switch in series with the low voltage humidity control circuit
so the humidifier is on only when the fan is operating. (In most
cases, the humidifier does operate in conjunction with the
system fan.)
NOTE: Wiring the humidifier to operate with the system fan
limits the humidification output.
Variable-Speed Motors
Continuous speed on variable speed motors may need to be
increased to provide enough air flow to prevent condensation
inside the ductwork. Minimum recommended air flow, under
most conditions, would be 400 cfm (680 cmh) in the duct
where the humidifier is mounted.
Water Treatment
Use cable (provided) to connect plug end to humidifier and
wire to solenoid using wire nuts (provided). See Fig. 10.
Fig. 10. Wiring water treatment system and humidifier.
Fan Failure Safety Lockout Circuit (HE440)
It is recommended using a fan failure safety lockout circuit that
stops the humidifier operation if the system fan fails.
IMPORTANT
Failure to install a fan failure lockout can result in
excessive condensation in the event of a motor/
blower failure.
If a safety lockout is used, be sure to design a safety control
circuit:
— Use equipment diagrams and trace the equipment wiring.
— In most cases, a fan sail switch must be installed to allow
the humidifier to operate only when the system fan is
operating. Wire the sail switch in series with the low voltage
humidity control circuit so the humidifier is on only when the
system fan is operating.
— In cases where the humidifier fan wiring terminals are used
to control the system fan, a time delay relay may be
required to allow time for the system fan to start, prior to
using the sail switch to check for fan operation.
CAUTION
Excessive Condensation Hazard.
Can damage ductwork.
Install fan failure safety lockout circuit to stop humidifier
operation if system fan fails.
Humidistat Wiring
Wire the humidistat terminals directly to the humidistat control
using low voltage (18 gauge) wiring.
PLUMBING
CAUTION
Chemical Hazard.
Can cause damage to environment or air
conditioning system.
Do not use any refrigerant line connected to an air
conditioner.
NOTE: Use either hard or soft water in the water treatment
system.
IMPORTANT
Use only copper tubing to plumb from the humidifier
to the water treatment system.
1. Locate the cold water pipe closest to water treatment
system.
2. Plumb between the saddle valve (provided) and the sole-
noid on the water treatment system. See Fig. 11.
3. Use the saddle valve instructions to install the valve (pro-
vided). The valve is self-piercing when installed on cop-
per pipe.
IMPORTANT
— Position the valve so water flows from the top or side
to reduce the chance of clogging the valve with
minerals.
— Lightly clean the copper tubing ends with fine
sandpaper before making any connections.
1
2
1
2
STEAM
HUMIDIFIER
EQUIPMENT
TERMINAL
STRIP
EQUIPMENT
BLOWER
G CONTACTOR
L1 L2
24V WIRING.
INSTALL JUMPER FROM R TO RC.M20333
FAN
WIRING
SOLENOID
WIRING
HUMIDISTAT
TERMINALS
R
RC
G
W
C
STEAM HUMIDIFIER
M20334
FAN WIRING
SOLENOID WIRING
HUMIDISTAT TERMINALS
TWO STAGE WATER
TREATMENT SYSTEM

HE440A STEAM POWER HUMIDIFIER
768-0265EF-3
4. Run 1/2 in. (12.7 mm) ID drain line from barbed fitting on
water treatment system to floor drain.
5. Run 1/4 in. (6.35 mm) OD copper tubing from water
treatment system to humidifier.
IMPORTANT
Do not overtighten the compression nut. Moderate
tightness prevents leaking.
CAUTION
Flooding Hazard.
Can cause water damage to equipment or home.
Connect humidifier overflow drain to a suitable waste
drain.
6. Use a male 3/8 in. NPT fitting (not supplied) or a 3/4 in.
female NPT fitting, standard garden hose (not supplied)
to connect the overflow provision of the humidifier to a
suitable waste drain.
7. Support the drain line at several locations to prevent
kinks. Be sure to provide support near any heat source.
Fig. 11. Plumbing water treatment system and humidifier.
CHECKING INSTALLATION
After installation is complete, use the following procedure to
check humidifier operation:
1. Turn on the humidifier water supply.
2. Plug in the humidifier and check that the humidifier has
power. Wait a few minutes for the reservoir to fill.
3. Turn the Convertible Humidity Control to the highest
setting.
4. Check that the furnace blower comes on to circulate the
moist air. The blower may take as long as fifteen
minutes to turn on.
5. Reset the Convertible Humidity Control to a comfortable
setting.
OPERATION
The HE440A Humidifier is controlled by the Convertible
Humidity Control that is installed either on the interior wall in
the living area or on the return air duct.
— Choose the humidity control setting using the combination
relative humidity/outdoor temperature setting scale on your
humidity control.
— Match the dial setting to the outdoor temperature to
optimize the humidity level while reducing the moisture
condensation on your windows.
— Use Table 2 to adjust the humidity control to the
recommended setting.
NOTE: As the outside temperature drops, lower the
recommended setting to accommodate the effects of
dewpoint. These settings should reduce the
accumulation of moisture and ice on the windows and
in other areas of the house.
Some indoor activities such as cooking, showering and clothes
drying can cause excessive levels of humidity and start the
accumulation of moisture on the windows.
NOTE: If this condition persists for more than a few hours, set
the humidity control to the lowest setting to turn off the
humidifier. If the condition does not improve, ventilate
the house to remove the moisture.
The HE440A Humidifier uses the principle that hot water
creates water vapor. As dry air and vapor mix, the relative
humidity of the air rises. The humidity control monitors the
relative humidity and activates the humidifier accordingly.
When the humidity control calls for humidity, the humidifier
underwater heater starts heating the water in the humidifier
reservoir. When the water is warm enough, the humidifier
activates a relay that turns on the furnace fan. The warm dry
air from the furnace picks up the water vapor and circulates it
through the home. The fan continues to circulate the air until
the water cools down and then turns off the fan.
Humidified air feels warmer and more comfortable so you may
be able to lower the thermostat heating setpoint and save
money on heating fuel bills to give you a more comfortable
environment that is also energy efficient.
WATER FILL
CONNECTION
OVERFLOW DRAIN
M20335B
TO FLOOR
DRAIN
TO SADDLE VALVE
1/4 IN.
OD COPPER
TUBING
TO DRAIN Table 2. Recommended Convertible Humidity
Control Settings.
At Outside
Temperature
Use
This
Setting
At Outside
Temperature
Use
This
Setting
-20°F (-29°C) 15 +10°F (-12°C) 30
-10°F (-23°C) 20 +20°F (-7°C) 35
-0°F (-18°C) 25 Above 20°F
(-7°C)
40

HE440A STEAM POWER HUMIDIFIER
68-0265EF-3 8
MAINTENANCE
A regular maintenance program prolongs humidifier life and
provides a more comfortable environment. Frequency of filter
replacement depends on water conditions. Either hard or soft
water can be used in the water treatment system.
CAUTION
Voltage Hazard.
Can cause electrical shock and equipment damage.
Unplug device to disconnect power supply before
installing or servicing.
IMPORTANT
Never oil any part of the humidifier.
Every Year — 3 to 6 Months of Operation
(Depending on Usage and Water Quality)
Use the following procedure and see Fig. 12 to replace the
chlorine filter.
IMPORTANT
Regularly replacing the chlorine filter protects the
RO filter.
1. Unplug the humidifier.
2. Replace chlorine filter. Use hand tool (provided) to
loosen housing.
IMPORTANT
— Be sure gaskets on both ends of filter are removed
from housing with the old filter.
— Be sure new gaskets (provided with filter) are
installed.
Every 2 to 3 Years (Depending on Usage and
Water Quality)
Use the following procedure and see Fig. 12 to replace both
chlorine filter and RO filter.
Fig. 12. Replacing filters.
IMPORTANT
Regularly replacing RO filter reduces the potential for
deposit buildup in the reservoir.
1. Unplug the humidifier.
2. Replace chlorine filter. Use hand tool (provided) to
loosen housing.
IMPORTANT
— Be sure gaskets on both ends of filter are
removed from housing with the old filter.
— Be sure new gaskets (provided with filter) are
installed.
3. Disconnect the tubing between the chlorine filter and the
reverse osmosis (RO) filter.
4. Unscrew the cap on the RO filter.
NOTE: Do not twist the elbow fitting on the RO cap (allow it to
turn with the cap).
5. Replace the RO filter.
HINT: Carefully use a small screwdriver to help lever the
RO filter out of the casing. (See Fig. 13.)
6. Reconnect tubing.
Fig. 13. Removing RO filter.
M20336A
RO FILTER
CHLORINE FILTER
CHLORINE FILTER HAND TOOL
M20337

HE440A STEAM POWER HUMIDIFIER
968-0265EF-3
End of Humidification Season
Drain the humidifier at the end of the humidification season.
1. Unplug the humidifier.
2. Turn off the water supply.
IMPORTANT
Be sure to allow water to cool before continuing.
3. Remove the drain plug at the bottom of the humidifier
and allow the water to drain into a bucket.
4. Replace the plug.
5. Remove, clean the reservoir of deposit buildup, as
necessary, and replace reservoir.
6. Empty water from chlorine housing.
7. At the beginning of the next humidifier season:
— Turn on the water supply.
— Plug in the humidifier.
Vacation
When you leave on vacation, you can turn off the humidifier, if
desired. To turn it off, just unplug the humidifier.
CHECKOUT
After winter startup or maintenance, use the following
procedure to check humidifier operation:
1. Turn on the humidifier water supply.
2. Be sure the humidifier has power and plug in the humidi-
fier.
3. Turn the Convertible Humidity Control to the highest set-
ting.
4. Check that the furnace blower turns on to circulate the
moist air. The blower can take as long as fifteen minutes
to turn on.
5. Reset the convertible Humidity Control to a comfortable
setting.
TROUBLESHOOTING
Refer to Table 3 for troubleshooting procedures.
Table 3. Troubleshooting Procedures.
Problem What To Look For What To Do
Low humidity Furnace blower not operating. • Reset circuit breaker or check for blown fuse.
• Check that the furnace power is on.
• Check all external wiring connections.
• Check the humidity control setting.
• Call a professional heating contractor.
Rapid air changes. Drafts (cold air
is dry and is an added load for the
humidifier).
• Keep doors and windows closed.
• Close fireplace damper when not in use.
• Keep exhaust fan running time to a minimum.
• Seal around doors and windows.
Clogged prefilter. • Replace prefilter (chlorine).
High humidity Condensation on the walls. • Turn off humidity control and water until condensation is completely
evaporated.
Heavy condensation on windows. • Turn down humidity control low enough to eliminate condensation
caused by moisture from bathing, mopping, coking, etc. If moisture
persists, more ventilation is needed.
Leaking
connection. Loose fitting. • Hand-tighten fitting.

HE440A STEAM POWER HUMIDIFIER
68-0265EF-3 10
WIRING DIAGRAM
CAUTION
Line Voltage and High Temperature Hazard.
Can cause personal injury.
Only a qualified contractor should troubleshoot and
repair steam power humidifiers.
The internal wiring diagram is provided to assist service
technician troubleshooting and repair. See Fig. 14.
Fig. 14. Internal wiring diagram for empty-state reservoir.
REPLACEMENT PARTS
See Fig.15 for exploded view and Tables 4 and 5 part numbers
for replacement filters and other parts.
Filters
Parts
LOW WATER
CUT OFF
LOW LEVEL
FILL TANK
HI LEVEL
TANK FULL
K4 K3 K2 K1
BLUEBLUE
RED
NO
NO
NC
NC NC NO
WHITE
HUMIDISTAT
THERMAL
SAFETY
SWITCH
OVER
110 C
CUTOFF
BLUE BLUE
BLUE
YELLOW
YELLOW
BROWN
YELLOW
BLACK
BLACK
WHITE
WHITE
GREEN
K2-1
K1-1
K3-1
K4-1
BLACK
BLACK
VARISTOR
150V (HE440)
275V (HE480)
BLACK
REED
SWITCH
REED
SWITCH
BLACK
BLACK
REED
SWITCH
BLACK BLACK
120 VAC
NEMA 5-15P
(HE440)
OR
240 VAC
NEMA 6-15P
(HE480)
LIGHT
HEATING
ELEMENT
1500W (HE440)
OR
2000W (HE480)
TRANSFORMER
120V/24V (HE440)
OR
240V/24V (HE480)
THERMAL FAN CONTROL
76 C ±5 C ON
55 C ±8 C OFF
SOLENOID WIRING
FAN WIRING
M20338C
STP-1 AWG 18-2C
105 C 300V 5 FT.
STP-1 AWG 18-2C
105 C 300V 20 FT.
Table 4. Filter Part Numbers.
Exploded
View No. Part No. Part Name
1 and 2 32006450-001 Filter Pack (1 RO and
2 chlorine filters)
1 32006451-001 Chlorine Filter
Table 5. Replacement Part Numbers.
Exploded
View No. Part No. Part Name
3 32006440-001 Solenoid Wiring Cable
(20 ft)
4 32006441-001 System Fan Wiring Cable
(5 ft)
5 32006442-001 Thermal Fan Switch
6 32006443-001 Transformer (120/24,
HE440)
7 32006444-001 Solenoid Valve
8 32006445-001 Relay
9 32006446-001 Float, long stem
assembly
10 32006447-001 Float, short stem
assembly
11 32006448-001 On Light (120V, HE440)
12 32006449-001 Heating Element
(1500W, 120V, HE440)
13 H8908B1002 Humidistat
14 H1008A1008 Automatic Humidistat
with HumidiCalc™