FIELD CONTROLS S2000 Electronic Steam Unit Power Humidifier Instruction Manual
- July 31, 2024
- FIELD CONTROLS
Table of Contents
S2000 Electronic Steam Unit Power Humidifier
“`html
Specifications:
-
Model: FIELD CONTROLS 094021A0104P
-
Type: Electronic Steam Unit – Power Humidifier
-
Compatibility: Gas or Oil Forced Air Furnaces, Heat Pumps,
Electric Furnaces -
Weight: 9 lbs. empty, 15 lbs. full of water
-
Power Requirements: 120 VAC, 15 amp outlet for S2000; 240 VAC,
10 amp outlet for S2020
Product Usage Instructions:
Simplified Installation Instructions:
-
Insulate the water reservoir following the instructions in
Figure 3. -
Select the mounting location on the duct and tape the mounting
template. -
Drill (8) 1/8″ mounting holes.
-
Cut out the humidifier opening in the duct.
-
Insert the humidifier into the opening and secure in
place. -
Connect the water line.
-
Connect the drain line.
-
Make 24 VAC electrical connections to blower interlock.
-
Install and connect the humidistat.
-
Plug the power cord into a grounded dedicated outlet as per
power requirements.
Detailed Installation Instructions:
-
Insulate Water Tank Reservoir:
With insulation foil side down, remove adhesive backing. Align
humidifier with the insulation and fold it up onto the sides,
pressing firmly. Seal with provided tape. Apply additional tape if
needed to prevent damage. -
Weight – Required Criteria:
If installing on fiberglass duct, provide structural support as
fiberglass alone won’t support the weight of the unit. Ensure
adequate support for the unit’s weight.
FAQ:
Q: What are the parts included in the Steam Humidifier
package?
A: The parts included are Self Piercing Saddle Valve,
Installation Instructions, Mounting Templates x2, Installation
Hardware package, Insulation and tape, Automatic Drain Assembly,
Humidistat – Autoflo Models 062000 or 072000, 1/2 I.D. Drain Hose-8
FT., Anode #Z 100.
Q: What options and additional parts are recommended for this
product?
A: Recommended options include Water Hammer Arrester #WH 100,
Decorative under duct cover # Sc100, Anode #Z 100, and Gasket
Material to seal flanges (field provided).
“`
This Owner’s Manual is provided and hosted by Appliance Factory Parts.
FIELD CONTROLS 094021A0104P Owner’s Manual
Shop genuine replacement parts for FIELD CONTROLS 094021A0104P
Find Your FIELD CONTROLS Humidifier Parts – Select From 14 Models ——– Manual
continues below ——–
Installation Instructions & Owner’s Manual
This symbol on
the product means
C
UL US the product is
listed by
R
Underwriters
Laboratories, Inc.
ELECTRONIC STEAM UNIT – POWER HUMIDIFIER MODELS S2000 AND S2020
FOR GAS OR OIL FORCED AIR FURNACES, HEAT PUMPS AND ELECTRIC FURNACES
The AutoFlo Residential Power Humidifier you have purchased has been designed to be simple to Install, Operate and Maintain. Read this manual before you install the Humidifier.
Familiarizing yourself with the items listed in Figures 1 and 2 will assist you in installing and maintaining your Steam Power Humidifier.
WATER INLET
WATER LEVEL PROBE
WATER PAN
TANK BAFFLE WATER INLET FOR DRAIN VALVE DETAILS SEE FIG. 8
TEMPERATURE PROBE
HEATER
FIG. 1
Ewc
CONTROLS, INC.
MStoeam H ® del S2u0m20idifieULr 2.0 KW 240 Volt 8.3CAmpsUS
UF30s9o.8e0rSS2Rr51.ieauAPplH0ilAat1nac1Tiue8gbmEmhleNebnwTtefPoraNarrytUsRCM3ae3Blls(,E8id0RE0e
)n5n474gt6i5la-i38sl110hU01tso8ewOnLn,ISlNyT®EJD017471V26
POWER HTWheaeatretemrristor BLOWER HEATER
FILL
DRAIN
OVERFLOW “T” ADAPTER MANUAL WATER DRAIN
BLOWER INTERLOCK & HUMIDISTAT CONN.
STATUS LIGHTS
AUTO DRAIN CONN.
FIG. 2
Parts included in the Steam Humidifier package are: 1. Self Piercing Saddle Valve 2. Installation Instructions and Owners Manual 3. Mounting Templates x2 4. Installation Hardware package 5. Insulation and tape 6. Automatic Drain Assembly 7. Humidistat – Autoflo Models 062000 or 072000 8. 1/2″ I.D. Drain Hose-8 FT. 9. Anode #Z 100
Options and additional parts recommended: 1. Water Hammer Arrester #WH 100 2. Anode #Z 100 3. Decorative under duct cover # Sc100 4. Gasket Material to seal flanges (field provided)
P/N 094021A0099 Rev. J Copyright C 1999-2003 EWC Controls All Rights Reserved.
SIMPLIFIED INSTALLATION INSTRUCTIONS
1. Insulate the water reservoir. See figure 3. 2. Select the mounting
location on the duct and tape
on the mounting template. 3. Drill the (8) 1/8″ mountings holes. 4. Cut out
the humidifier opening in the duct. 5. Insert the humidifier into the opening
and screw in
place.
6. Connect the water line. 7. Connect the drain line. 8. Make 24 VAC
electrical connections to blower
interlock. 9. Install and connect the humidistat. 10. Plug power cord into a
grounded dedicated 120 VAC, 15
amp outlet for S2000 (240 VAC, 10 amp for S2020).
If the humidifier installation does not meet the required criteria, consider using a different Autoflo model humidifier such as a SC15 or 200P.
DETAILED INSTALLATION INSTRUCTIONS
1. INSULATE WATER TANK RESERVOIR
With insulation foil side down, remove adhesive backing. Align humidifier so
that front side of unit meets long edge of insulation. Fold insulation up onto
sides of humidifier and press firmly. Apply 5 continuous strips from the tape
provided to seal the foil as shown. The tape will prevent the sharp duct edges
from damaging the foil. Use additional foil tape to repair damage to the foil.
The Insulation MUST be applied to the tank regardless of the mounting
location.
INSULATION (FOIL SIDE OUT)
3. WEIGHT – Required Criteria
If the humidifier is installed on fiberglass duct, the installer must provide
structural support for the unit. The fiberglass duct alone will not support
the weight of the steam humidifier, which is 9 Lbs. empty and 15 Lbs. when
full of water. Providing Adequate Structural Support for this unit is the
responsibility of the Installer
4. MOUNTING TEMPLATE
Two mounting templates are provided. Choose the correct template for your
mounting method. Tape the mounting template to the duct. The template must be
leveled using the top of the cutout on the template. The template should be
located so that the bottom of the reservoir cut-out is flush with the inside
of the bottom of the duct for horizontal duct. Since most ducts are insulated
this additional space, about one (1) inch, must be accounted for when
determining the location for the bottom of the reservoir cut-out. If you are
mounting it under the duct, make sure the duct is level.
USE TAPE TO SEAL THE FOIL TO THE FRONT MOUNTING PLATE (3 PLACES-SIDES AND
BOTTOM)
FIG. 3
USE TAPE TO SEAL THE OUTSIDE EDGE OF THE FOIL (2 PLACES)
2. LOCATION-LOCATION – Required Criteria
DO NOT INSTALL this unit in an attic unless freeze and flood protection
measures are taken! See page 12 for details. The steam humidifier can be
installed in either the warm air supply or the cold air return ducts; however
the preferred location would be in the warm air supply duct of the heating
system. This humidifier does not require warm air to evaporate the water in
order to provide humidity, but it will operate more efficiently in the warm
air duct and condensation is less likely to occur on the surrounding cold
surfaces. Efficiency is lost in a return air duct location.
5. DRILL HOLESAND CUT OPENINGS
Use an electric drill, with grounded power cord, to drill eight (8) mounting
holes, 1/8″ diameter, in the duct. These can be drilled through the template
at the locations indicated on the template.
A saber saw or tin snips can be used to cut out the water reservoir opening.
CUT ON LINE
MOUNTING TEMPLATE
MODEL S2000 & S2020
CUT ON LINE
CUT ON LINE
When selecting a location on the duct, be certain that there is enough room in
the duct for the water reservoir. There should be at least five (5) inches
above the reservoir and the reservoir should not occupy more than about 25
percent of the duct space. If this criteria can not be met, you should install
the unit under the duct by means of the tank flange. A template is provided
for installing the unit under the duct, on the cold air return.
A suitable means of gravity draining the unit should be available, Although
the unit will work with the drain valve physically or electrically
disconnected. See page 12.
2
1. TAPE TEMPLATE IN LEVEL POSITION.
2. DRILL (8) HOLES FOR SHEET METAL SCREWS SHOWN ON TEMPLATE (DO NOT DRILL
LARGER THAN 1/8″ DIAMETER.
3. CUT OUT SOLID LINE AREAAS MARKED.
4. MOUNT HUMIDIFIER PER INSTRUCTIONS.
CUT ON LINE
FIG. 4
P/N 094021B0037
6. WATER SUPPLY – Required Criteria
A. WATER SUPPLY USING THE SADDLEVALVE FURNISHED WITH UNIT
Installation instructions for the saddle valve are printed on the plastic bag
containing the saddle valve and its components. Tap into a 1/2″ or 3/4″
domestic hot water line for best results, but a cold water line will do. Avoid
connecting to water lines from a Reverse Osmosis system. The supply water must
read a minimum of 25 ppm in order for the Steam unit to reliably sense the
water.
NOTE: Never install the saddle valve on the bottom of the water pipe. Sediment
in the water pipe may clog the saddle valve. When tightening the hex
compression nut, tighten only enough to assure there are no leaks. NOTE:
Saddle valves do not meet plumbing codes in some areas. A “T” fitting with a
valve may be required to meet code or, if low water pressure causes frequent
water alerts on the steam humidifier. NOTE: Do not use any line which is
served by a water softener. If your home has a water softener, make the water
connections to a water line upstream from the water softener. A water softener
is not a demineralizer. It merely exchanges various hard ions for soft ions in
the water. These soft ions, or minerals, will build up in the humidifier,
causing the need for frequent servicing. The evaporation of softened water may
also produce a white powder which may be carried into the duct system and,
ultimately, into your home.
Note: Use a water hammer arrester (WH-100)
if water spikes occur during operation.
A temperature sensor is mounted in the water reservoir of the humidifier. As
the water temperature increases to about 170 degrees F, the computer closes a
set of blower relay contacts. When the water cools to about 140 degrees F, the
computer will open the relay contacts.
9. WIRING THE STEAM HUMIDIFIER
IMPORTANT: Dedicated fused circuits of the proper voltage and current ratings
must be provided. All wiring must conform to local and national codes.
A. INSTALLINGAND WIRING THE HUMIDISTAT
A humidistat, such as the AutoFlo Models 062000 or 072000 is required to
control the Steam Humidifier. The humidistat may be installed on the wall in
the living space or on the return air duct. NOTE: Continuos fan operation
should be initiated if the humidistat is installed on the return air duct!
Instructions for installation are packaged with the humidistat. DO NOT connect
any foreign voltage to the “H” terminals of the humidifier. The unit supplies
it’s own 24 volt control voltage. Simply connect the two “H” terminals
straight to the humidistat terminals.
S2000 & S2020 Typical Wiring and Blower Interlock Diagram
S2000 & S2020 Humidifier
Typical Thermostat
RWG Y
G1 R G2 H
H
B. OVERFLOW & DRAIN LINES – Required Criteria
The use of an overflow line and drain line is always required.
Use the supplied 1/2″ ID high temperature hose. Slip the hose over the 1/2″ OD
“T” drain fitting and use a hose clamp to secure. Route the hose to a suitable
drain, avoiding kinks, traps and sharp objects.
DO NOT route the hose above the humidifier.
RWG Y Furnace
Humidistat
NOTE: Previous models required two [2] drain hoses. The new models include an
integrated overflow tube with a high temperature barbed “T” fitting. The new
design simplifies the installation process.
Failure to install all necessary drain lines will result in water leaks during
normal operating conditions, and voids all warranties.
7. MOUNTING THE STEAM HUMIDIFIER
Use gaskets to seal where the steam flanges contacts the ductwork. Place the
humidifier reservoir into the opening in the duct and secure with eight (8)
sheet metal screws.
NOTE: If the ductwork will not support the unit in a level position with the
water pan full of water, the duct-work must be reinforced. Both steam models
weigh approximately 9 Lbs. empty and approximately 15 Lbs. full of water.
8. STEAM OPERATION
Because of the high output of this Humidifier, it must not
be operated in ducts or plenums without the blower
operating. The steam humidifier is designed to be
“Dominant” over the Heating-Air Conditioning System
Blower. The “System” Blower will be operated by the
humidifier, when humidity is required to meet the
demand. A minimum of 800 cfm is required for proper
operation of the steam humidifier. Lower velocities will
result in excessive condensation inside the duct.
3
FIG. 5
Heat & Cool System
B. FIELD WIRING
All wiring must be made in accordance with local codes and ordinances. DO NOT
cut off the grounded plug and/or hard wire this unit to line
voltage. Do not use extension cords to operate this unit!
Figures 5 & 6 describes the suggested interlock wiring arrangement for HVAC
systems. Interlocking may be performed on heating systems that provide a 24
VAC NEC Class 2 terminal for blower control.
IMPORTANT NOTE:
If the Steam Humidifier is removed and disconnected from the system, the
blower interlock circuit must be
restored to it’s original configuration. Failure to do so may result in loss
of blower operation!
Heat only Thermostat
RW
S2000 & S2020 Humidifier
G1 R G2 H
H
RWG Furnace
Humidistat
FIG. 6
Heat Only System
Connect field wiring as shown in Figures 5 or 6.
IMPORTANT: If the humidifier is installed in the return air plenum the
humidistat must be located at least three (3) feet upstream from the
humidifier. Fan should be operated in continuos mode when humidistat is
mounted in the return air plenum.
The humidistat has two (2) screw terminals which should be connected to the
low-voltage interlock plug. (Figure 5).
Wiring instructions for the 072000 model Humidistat are packaged with the
072000.
10. SETTING THE HUMIDISTAT
It is recommended that humidistat settings of 30-40% not be exceeded. If
condensation is noticed on windows during very cold outside temperatures, the
humidistat setting should be lowered.
The maximum recommended relative humidity for your home depends upon factors
such as outdoor air temperature, type and placement of insulation, vapor
barriers, effectiveness of weather stripping, type of windows and doors
(including frames and jambs) and whether or not storm windows and doors are
used. With all these variables it is nearly impossible to recommend a proper
humidity setting. The best humidistat setting is one that you are comfortable
with. Also, as the outdoor temperature fluctuates, it may be necessary to
adjust the humidity level of your system a few times during the heating
season.
Refer to the “Relative Humidity Chart” as a starting point for your proper
humidistat setting. Generally, in a tighter and better insulated house, the
humidistat may be set higher than in a drafty, un-insulated house.
RELATIVE HUMIDITY CHART
Outside Temperature
Outside Relative Humidity
Indoor Relative Humidity
When Outside Air Is Heated To
72 Degrees F
Maximum Safe Recommended Indoor
Relative Humidity
-10 Deg. F
40%
1%
20%
60%
2%
80%
2%
0 Deg. F
40%
2%
25%
60%
2%
80%
5%
10 Deg. F
40%
4%
30%
60%
5%
80%
7%
20 Deg. F
40%
6%
35%
60%
8%
80%
11%
30 Deg. F
40%
8%
40%
60%
13%
80%
17%
4
11. INITIALSTART-UP – SEQUENCE OFOPERATION and SERVICE “LED” INDICATORS
Once the Steam Humidifier has been installed and the water, humidistat and
blower interlock connections completed, the humidifier may be initially
started.
A. Flush and Turn “ON” the water supply to the steam Humidifier.
B. Set the humidistat to a high or “ON” position.
D. BLOWER: When the water in the reservoir reaches approximately 170 deg. F. the “BLOWER” LED will be illuminated and the interlock wiring should turn the system blower on. Depending upon the water and ambient temperatures, it may take anywhere from four to twelve minutes for the water to heat to 170 deg. F. If the humidistat remains closed the “HEATER” and “BLOWER” LED’s will both be illuminated at the same time and the “POWER” LED will be blinking slowly.
C. Plug the S2000 Humidifier line cord into a 120 VAC, 15 amp source.
(240VAC,10amp for S2020).
D. The Green “POWER” LED should blink rapidly and the drain valve will open
momentarily upon initial start up. The “FILL” LED will illuminate and water
should begin to fill the Water Pan.
E. When the water has reached the probe level the “FILL” lamp and fill valve
will be turned off, and the “HEATER” LED and heater element will be turned on.
The “POWER” LED will blink slow and steady.
F. Once the water reaches 170 deg. F. the “BLOWER” LED will illuminate and the
system blower should start up.
G. If the above steps have been successfully completed, the humidifier is
operating properly.
12. OPERATINGSEQUENCE
A. POWER: In normal standby mode, when the humidistat is not calling for
humidity and the power cord is plugged in, the “POWER” LED should be blinking
slowly. If the green “POWER” LED is not flashing, when there is power to the
unit, there has been a malfunction in the microprocessor circuit.
B. FILL: When the humidistat closes, on a call for humidity, the “FILL” LED is
illuminated, the Solenoid Valve is open and the water reservoir is filling.
E. The “FILL” LED will illuminate and the water reservoir will refill at
irregular intervals, depending on the boil off rate. Depending upon the water
temperature, the “BLOWER” LED may remain illuminated or may go off when the
reservoir is filling. The “HEATER” LED should remain illuminated unless the
humidistat opens or the humidifier enters a drain cycle or failure mode.
F. DRAIN: This LED will be illuminated when the microprocessor cycles the
humidifier into a Maintenance Mode. After a fan forced cool down period, the
water is allowed to drain at 140 degrees F. The drain valve will then close
and the fill valve will open to refill the reservoir and resume normal
operation This mode will last about one hour and the microprocessor will
automatically restart the unit afterwards, if there is a call for humidity.
This drain cycle will occur once every 8-12hours, to reduce the mineral
concentration in the tank and let the heater cooldown. That will shed most
deposits that have built up on the heater. NOTE: The “POWER” LED will blink
rapidly during Maintenance mode. NOTE: A unique feature of the “S” series
humidifiers is called “Fill on Request”. The unit will not refill with water
after a maintenance cycle, unless there is a demand for humidity from the
humidistat. This ensures that the unit will not sit idle with standing water,
which can stagnate over time.
G. FAILURE LED’S: When service is required, these LED’s will illuminate. If
the humidifier enters a failure mode, it must be manually reset by
disconnecting the power and then reconnecting it.
C. HEATER: When the water reaches it’s proper level the valve closes, the
“FILL” LED goes out, the “HEATER” LED is illuminated, and the Heater begins to
heat the water.
NOTE: If the humidifier is unplugged while in operation and then plugged back
in, A rapid flashing of the “POWER” LED will occur and all other functions
will stop! The unit wants to perform a water probe test, but cannot perform
this test until the water cools down. Simply wait until the unit cools down
and it will resume normal operations.
WATER: This will occur when the reservoir is not filling up with water, not
filling fast enough or the microprocessor cannot recognize that the water is
touching the probe. Reverse Osmosis water or purified (distilled/deionized)
water sources should be avoided, unless the final feed water measures at least
25 ppm conductivity.
HEATER: This will occur if the humidifier is not boiling off water during the
“HEATER” cycle. Water in the reservoir is not reaching 170 deg. F.
temperature, or the unit has not detected a request for water in a 45 minute
steaming time period. Both red LED’s will illuminate in this condition.
THERMISTOR: This will occur if a short or open is detected in the temperature
probe.
5
13. MAINTENANCE/SPRING SHUTDOWN
Proper maintenance and removal of mineral deposits is still required on your
steam humidifier in order to optimize performance. Annual cleaning is a must
and more frequent cleaning may be necessary depending on the mineral content
of the water in your area.
A post winter cleaning and shutdown, will prevent hard deposits from
accumulating inside the bin, while the humidifier is idle over the summer. Do
not allow the unit to sit idle for long periods without a proper draining,
cleaning, and shutdown. Failure to do so, will affect the performance of your
steam humidifier.
Maintenance and inspection of the unit requires removal of the humidifier from
the duct. This can be done following these steps.
K. Rinse out the reservoir. Be careful to keep water off of the wiring
compartment or the outside of the humidifier. Allow the unit to dry thoroughly
before using!
L. Reinstall the tank baffle and tighten the two (2) screws.
M. Re-install the unit in the duct and connect the water line, the drain lines
and the cable plug. Store the unit in this condition for the summer, or
continue to the next step.
N. Turn on the water supply. Inspect the water connections and drain fittings
for leaks.
O. Plug-in the S2000 power cord to the 120 VAC (240 VAC for S2020) grounded
outlet. DO NOT use an extension cord.
A. Unplug the power cord from the 120 volt source for S2000 (240 volt for
S2020) and allow the water to cool for at least 30 minutes prior to removal.
B. Turn off the water supply at the saddle tapping valve.
C. Remove the cable assembly wire plug from the top of the plastic control
housing.
D. Drain the water with the manual drain valve. NOTE: The drain valve will be
hot if the humidifier has not been allowed to cool.
a. The green POWER light should blink slowly.
b. If the humidistat is calling for humidity the water valve will energize and
the water pan will begin to fill.
14. SERVICE INDICATORS
Seven LED lamps provided on the front panel indicate the functional status of
the humidifier as shown in Figure 7 below.
E. Disconnect the water and drain lines. NOTE: Some water may drain out of the water line. Have a small container ready to catch the water.
NOTE: Although the water has been drained, some water may still remain in the humidifier reservoir along with sediment. Be careful not to tip the unit over when removing it from the duct.
Remove the eight (8) screws from the front mounting plate.
F. Slide the humidifier out of the duct.
G. Remove the two (2) screws holding the tank baffle to the pan flange and
remove the baffle from the unit. Scrape all mineral deposits from the baffle
and wash baffle off as described in step J. Remove the Anode from the baffle
plate and purchase a new one. Operating the unit without the Anode will
degrade the performance and increase maintenance.
H. Use a putty knife to scrape the minerals from the sides and bottom of the
water reservoir. DO NOT scrape on the small temperature probe, or the heater
element. Use a soft emory cloth or brass brush.
I. Carefully scrape the Water Level Probe to remove mineral deposits. Use soft
emory cloth if necessary.
J. Clean the Water Probe Insulator, inside the pan, with a cloth and 50-50
mixture of water and vinegar, rinse with fresh water. Inspect for any mineral
deposits on the plastic insulator. Repeat cleaning if necessary and thoroughly
dry. Use a small brass brush to clean deposits off the heater element and
thermistor probe. Be careful not to damage any of the components.
LED LIGHT EXPLANATION
POWER
– GREEN – BLINKING SLOWLY-IF POWER TO UNIT
SERVICE THERMISTOR – RED – ON STEADY
SERVICE HEATER
-RED – ON STEADY BOTH LED’S
SERVICE WATER
– RED – ON STEADY
BLOWER
– AMBER – ON STEADY WHILE PAN ABOVE 170 DEG F.
HEATER
– AMBER – ON STEADY WHILE HEATING (BOILING)
FILL
– AMBER – ON STEADY WHILE FILLING PAN
DRAIN
– AMBER – ON STEADY WHILE DRAINING PAN
IMPORTANT NOTE
ON THE INITIAL FILL AFTER INSTALLATION OR ANYTIME THE WATER PAN IS DRAINED THE
PAN MUST FILL WITH ABOUT THREE (3) TIMES THE AMOUNT OF WATER AS REQUIRED IN
THE NORMAL CYCLE OF FILLING. THE ‘FILL TIMER’ MAY TIME OUT BEFORE THE WATER
LEVEL REACHES THE WATER LEVEL PROBE CAUSING THE ‘SERVICE CYCLE’ TO BE STARTED.
IF THE WATER FAILURE ILLUMINATES, UNPLUG THE UNIT FROM ITS POWER SOURCE, WAIT
ABOUT 15 SECONDS AND RECONNECT THE POWER SOURCE. THE SERVICE LIGHT WILL GO OUT
AND THE UNIT WILL CONTINUE FILLING TO THE CORRECT LEVEL.
FIG. 7
6
SERVICE INDICATORS
A. The green “Power” light does not blink off and on.
1. The S2000 is not connected to an active 120 VAC 15 Amp power source.
(S2020, 240 VAC, 10 AMP).
2. Call the Technical Support Hotline.
B. The “HEATER” LED does not illuminate.
1. The humidistat is not closed, calling for humidity or the humidistat is
wired incorrectly.
2. The unit is in the maintenance cycle.
C. The HVAC Blower will not operate, but the “Blower” LED is on.
1. The blower “Field” wiring and/or interlock circuitry is incorrect.
2. The HVAC electric power is disconnected.
3.The humidifier internal “Blower” relay is defective. Call the Technical
Support Hotline.
4. The HVAC Blower motor has failed.
D. The HVAC Blower will not operate and the “Blower” LED is not on.
1. The water pan temperature has not reached a high enough temperature to
activate the “Blower” relay, about 170 degrees Fahrenheit. This takes several
minutes after the “HEATER” LED is illuminated. Depending on the water
temperature and the surrounding condition, this may take up to 12 minutes. If
the problem continues, the heater element may be defective, the thermistor
temperature probe may be defective. Contact the Technical Support Hotline.
E. Red Service Light (error #1) is on constantly. THERMISTOR …This is an
indication that the temperature probe is open or shorted to ground. May also
indicate the probe has detected a pan temperature below 32 degrees F. Or in
excess of 230 degrees F., resulting in a total shutdown. Try to reset the unit
by unplugging the cord and reconnecting, or call Technical Support.
F.
Red Service Light (error #2) is on constantly. WATER …This is an indication
that the water fill time has been exceeded. The water level did not reach the
probe tip in the given amount of time. It may also indicate an unsuccessful
drain cycle.
1. The water line is shut off at the saddle valve. 2. The water line is
crimped or pinched. 3.The water valve inlet screen is plugged. Remove the
water line from the unit and check the screen found inside the inlet side of
the valve. 4.Unit is connected to a water source which is distilled, over-
filtered, de-mineralized, or from a reverse osmosis system. Minimum 25 ppm
water conductivity is required. *The unit supply water must contain dissolved
solids in the water, or the processor will not be able to detect the water
level.
7
5.The water valve may be defective and must be replaced See replacement parts.
6. The drain valve is unplugged or defective.
7. Debris is clogging the drain valve or drain line.
8. Reset the unit by unplugging the power cord and reconnecting.
G. Both Red Service Lights (error #3) are on. HEATER FAILURE…This is an
indication that the water temperature is not increasing or reaching the
boiling point.
1. Faulty heater element or faulty wire connection.
2. This can happen if the unit is operated without water in the pan as a
result of a water level probe malfunction, due to lack of maintenance. The pan
boils dry and overheats the water pan. If this condition occurs, call the
Technical Support Hotline.
3. The unit has operated for 45 minutes without a request for water, due to a
leaking water fill valve, which is filling the tank continuously.
If the humidifier seems to operate in a random manner that doesn’t seem to fit
any of the pre-described conditions, check the following:
H. 1. Check to make sure that the wires used to connect the humidifier to the
humidistat are separate wires and not part of a multi-wire bundle used to hook
up the furnace thermostat or any other device. The associated close wires may
create an induced voltage in the humidistat wiring.
2. Make sure that the water level probe and plastic insulator are clean and
free of mineral build-up. It may become electrically conductive to ground,
sensing a false indication that the water level is correct.
3. If the electric solenoid valve makes a loud noise when it closes, install
an optional water hammer arrester to absorb the spike. Frequent or erratic
water fill cycles can be due to air turbulence, when mounted in the supply air
plenum.
4. The water probe uses the natural conductivity of the water, to determine
the proper water level in the reservoir. Water that has been de-mineralized or
over treated may not allow the unit to function properly. Minimum 25 ppm of
total dissolved solids must be present in the water. Add approximately 1
tablespoon of salt to the tank, to temporarily remedy this problem.
5. These steam humidifiers must be connected to dedicated outlets of the
proper current and voltage ratings. The use of extension cords is not
recommended.
DO NOT cut off the grounded plug and/or hard wire this humidifier to line
voltage. This will void the warranty.
ITEM
1 1 2 3 4 5 6 7 8 9 10 11
S2000 PART NO.
2120
2001 2002 2003 2004 2006 2007 2008 WH 100 Z 100 2009
S2020 PART NO.
2240 2001 2002 2003 2005 2006 2007 2008 WH 100 Z 100 2009
DESCRIPTION OF PART
120 VOLT HEATER ASSEMBLY 240 VOLT HEATER ASSEMBLY 24 VOLT SOLENOID VALVE
ASSEMBLY THERMISTOR PROBE ASSEMBLY WATER LEVEL PROBE ASSEMBLY CIRCUIT BOARD
ASSEMBLY DRAIN VALVE ASSEMBLY TANK BAFFLE INSULATION KIT (not shown) WATER
HAMMER ARRESTER (not shown) ANODE UNDER DUCT STEAM COVER (not shown)
15. SERVICE AND REPLACEMENT PARTS
7 1
10
3 2
4 5 4
6
Ewc
CONTROLS, INC.
MStoeam H ® del S2u0m20idifieULr 2.0 KW 240 Volt 8.3CAmpsUS
UF30s9o.8e0rSS2Rr51.ieauAPplH0ilAat1nac1Tiue8gbmEmhleNebnwTtefPoraNarrytUsRCM3ae3Blls(,E8id0RE0e
)n5n474gt6i5la-i38sl110hU01tso8ewOnLn,ISlNyT®EJD017471V26
POWER HTWheaeatretemrristor BLOWER HEATER
FILL
DRAIN
3
1
Ewc
CONTROLS INC.
385 Highway 33
Englishtown, NJ 07726
www.ewccontrols.com
e-mail: autoflo@ewccontrols.com
Tel. 800-446-3110
Fax: 732-635-8646
8
FIG. 8
OVERFLOW TUBE, .50 ID x 6″ LG. P/N 094021A0074
SOLENOID VALVE, 24/60 VAC P/N 094021A0040
BARBED TEE, 1/4-18 NPT TO 1/2″ P/N 094021A0073
BLACK WIRES 18GA. X 18″ LONG P/N 501052A0002
DRAIN COCK VALVE P/N 094020A0055
JUMPER WIRE,
20GA. X 1.50″ LONG
MOLEX PLUG
“T” ADAPTER, 1/4″ NPT P/N 094021A0038
P/N 205113A0098
EWC
CONTROLS INC.
385 Highway 33
Englishtown, NJ 07726
www.ewccontrols.com
e-mail: autoflo@ewccontrols.com
Tel. 800-446-3110
Fax: 732-635-8646 Tech. 800-526-4048
9
AUTOFLO HUMIDIFIER
Z100 ASSEMBLY
APPLICATION NOTE
AN 131
INSTALLATION INSTRUCTIONS & OWNER’S MANUAL Z100 REPLACEMENT INSTRUCTIONS
SUPPLEMENT TO THE AUTOFLO ELECTRONIC STEAM POWER HUMIDIFIERS MODEL # S2000 AND
S2020
The AUTOFLO steam humidifier now comes equipped with a factory installed Z100,
which acts as a sacrificial metal. Put simply, minerals in the water will
attack and cling to the Z100. The minerals will not attack the other
components inside the humidifier as long as the Z100 is present and active.
This results in a dramatic decrease in mineral and scale build up on the
critical components inside the tank. In particular, it means less scale build
up on the heating element which is subject to damage from excessive scaling
and over heating. This also means that efficiency stays high and preventive
maintenance is faster and easier.
The Z100 is positioned on the baffle plate inside the tank and is easily
removed and replaced. Remember that the Z100’s job is to become the target of
mineral attack, so it will be heavily covered with scale and should be
replaced annually for best results.
To remove the Z100 you must have already unplugged and shutdown your steam
humidifier and allowed it to cool. The water tank has been drained, the water
supply, drain lines and electrical wiring have been disconnected and the unit
has been removed from the duct.
Refer to the blow up view on Page 8. Using a phillips screwdriver, remove the
two screws that hold the baffle plate to the tank. Lift the baffle slightly
back to clear the water probe and then straight up and out of the tank. You
can then see the round Z100, or rather what is left of it after a single
season. Notice the heavy scale build up on the Z100 that would have been on
your element, if the Z100 was not there. Use a rag or pliers to grasp the
edges of the Z100 and simply unscrew it from the baffle plate. Rinse off or
wipe away any residual scale from the baffle plate and install a new Z100.
Leave a slight gap between the bottom of the Z100 and the baffle plate. Now
re-insert the baffle plate into the tank and secure with the two screws that
were removed previously. It’s that simple.
The Z100 can also benefit the older model steam humidifiers. Simply lay the
Z100 down into the baffle plate in the same location as the factory installed
model. DO NOT lay the Z100 down into the main tank. It may come in contact
with the heating element and damage it. The dimensions of the baffle plate
prevent the Z100 from falling down into the tank.
The Z100 is just the latest innovation in the AUTOFLO Steam Humidifier line as
we continue in our pursuit of Excellence Without Compromise.
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726
800-446-3110 FAX
732-635-8646 E-Mail-
info@ewccontrols.com
10
Excellence Without Compromise
EWCR
CONTROLS INC.
APPLICATION NOTE
AN 147
FAN FAILURE SAFETY LOCK-OUT CIRCUIT “Field Provided”
The use of a safety lock-out circuit is highly recommended. The circuit below is effective at stopping the humidifier operation if the fan motor fails for any reason. The use of a system interlock is optional and not required for basic operation. Failure to incorporate a lock-out can result in excessive condensation inside the duct work and/or possible flood damage, if the HVAC Fan/Blower fails to operate. This solution is provided as a supplement. Flood or water damage as a result of not using this diagram is not the responsibility of EWC Controls.
FAN FAILURE SAFETY LOCK-OUT CIRCUIT
TYPICAL THERMOSTAT
RWG Y
S2000 & S2020 HUMIDIFIER
G1 R G2 H
H
SEPARATE SAIL SWITCH
OR CURRENT SENSING RELAY CONTACTS
RWG Y C
FURNACE
K2 COIL
K1 COIL
NO
NO
NC
C
NO
SPST K2 Interlock Optional RELAY 24 VAC COIL
HUMIDISTAT
SPDT K1 Interlock Basic RELAY 24 VAC COIL
. . . . . EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 732-446-3110 FAX 732-446-5362
“S” series AutoFlo Steam Humidifier
IMPORTANT NOTES:
LOCATION: Installing the steam unit in the attic is NOT recommended. Freezing
temperatures, the possibility of flood damage, the possibility of producing an
environment where mold can start, are all good reasons to avoid this location.
However, a successful attic installation can be performed if the following
components and safety measures are included: 1. A safety catch pan should be
fabricated and installed directly underneath the entire air handler and the
steam unit. 2. Safety catch pan should have a water sensor with fail open dry
contacts wired in series with the Steamer control circuit. 3. The Fail safe
blower interlock circuit on page 11 should be utilized with all devices
included in the diagram. 4. Insulating the water supply line and drain lines
is mandatory. If code allows, apply heat tape to the water supply line and
then insulate it. 5. A decision to operate the Steamer without the automatic
drain valve may be necessary, if a suitable downgrade slope to drain is not
available. The drain lines should never be trapped, kinked, or routed above
the Steamer. 6. A separate High Humidity cut-out should be mounted in the
attic itself, and wired in series with the Steamer control circuit. 7. Routine
maintenance of the Steamer must be adhered to, and annual inspections for
moisture and/or mold on the wood surfaces should be performed. 8. All ductwork
must be completely sealed as the source of excess moisture in the attic will
come from leaky ductwork. WATER SUPPLY: 1. Remember, the Steamer water supply
must measure minimum 25 ppm conductivity in order for the processor to
reliably detect the presence of water and the proper water level. 2. Plastic
1/4″ water supply tubing is supplied in the box for you however, we recommend
the use of copper tubing in most applications as it is stronger, more
reliable, and can support the weight of the WH100 water hammer arrester. 3.
Use of a water hammer is highly recommended to dampen out water spikes when
the Steamer opens & closes the valve.
Field Notes:
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726
800-446-3110
732-446-3110 FAX
732-446-5362
References
- Repair Your Grill: Shop Replacement Parts for 24,880 Models
- Field Controls Humidifier Parts - Select From 14 Models