User manual | Herrtronic® 6000 Series

READ AND SAVE THESE INSTRUCTIONS
Herrtronic® 6000 Series
Electrode Steam Humidifiers
H E R R M I D I F I E R ® | w w w. h e r r m i d i f i e r - h v a c . c o m
Installation, Operation, & Maintenance Manual
TABLE OF CONTENTS
SECTION I WARRANTY
Preface............................................................................................................................................................3
SECTION II UNIT OPERATION
Basic Operation............................................................................................................................................... 4
Key Features...................................................................................................................................................5
Engineering & Application............................................................................................................................... 6
SECTION III INSTALLATION INSTRUCTIONS
Mounting..........................................................................................................................................................6
Plumbing.........................................................................................................................................................7
Steam Distribution........................................................................................................................................... 7
Wiring..............................................................................................................................................................7
Supply Power.................................................................................................................................................. 7
Control Circuit Connections............................................................................................................................. 8
SECTION IV OPERATING INSTRUCTIONS
Start-up Instructions........................................................................................................................................ 8
Checklist..........................................................................................................................................................9
Maintenance....................................................................................................................................................10
SECTION V TROUBLESHOOTING GUIDE
Board Test Points............................................................................................................................................ 11
Unit Detected Faults: (Red Service Light On)................................................................................................. 12
Non-fault Activated Problems.......................................................................................................................... 13
Wiring Diagram................................................................................................................................................15
Exploded View.................................................................................................................................................16
Parts List.........................................................................................................................................................17
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Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
SECTION I WARRANTY
Warranty
1. HERRMIDIFIER warrants to the buyer or any user
during the duration of the Warranty that the humidifier
described in this manual will be free from defects of
material and workmanship for a period of two (2) years
from the date of shipment.
2. For this Warranty to be effective, this humidifier must
be installed, operated and maintained in accordance
with the Installation Instructions, Operations and
Maintenance Manual(s) supplied with the humidifier.
3. In the event of a defect or malfunction in this product
during the Warranty Period, user may contact the
Customer Service Department or their HERRMIDIFIER
Representative for a Customer Relations Management
(CRM) number. Items tagged (on the outside of the box)
with this number may be returned to HERRMIDIFIER
for replacement. Incidental expenses such as cost
of transporting the humidifier to HERRMIDIFIER or
labor associated with removal/replacement of the
parts shall be paid by the user. Upon completion of the
reconditioning, the humidifier will be returned at no cost
to the user. Items returned without a CRM number will
not be accepted!
4. Every 6000 series steam generating humidifier contains
a plastic steam generating cylinder which is to be
considered a routinely disposable part to be changed
at regular maintenance intervals at the user’s expense.
This steam generating cylinder is not covered by this
Warranty. If, after the installation of your 6000 humidifier,
you feel the steam generating cylinder is not operating
normally, you should contact HERRMIDIFIER with an
explanation of the problem. However, in the continuing
operation of the humidifier, replacements of this part are
your responsibility as part of routine maintenance.
5. This Warranty does not cover field labor for
repairs to this humidifier or any special, indirect or
consequential damages. Some states do not allow
the exclusion or limitation of incidental or consequential
damages, so the above limitation may not apply to you.
6. If, after a reasonable number of attempts to do so,
HERRMIDIFIER is unable to remedy any defects or
malfunctions in this humidifier, then the user may elect
either a replacement of such product or part which may
be defective without charge or a refund of the buyer’s
original purchase price.
Herrtronic® Model 6000
7. This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to
state.
NOTE
Water quality plays a vital role in the performance and
maintenance requirement of any humidifier. Adjustments to the circuit board may be necessary based on
the incoming water quality. See pages: 11-14.
Performance problems associated with water quality
are not warranty issues!
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3
Installation, Operation, & Maintenance Manual
SECTION II UNIT OPERATION
Basic Operation
Controlled humidification requires a very precise control
system. The 6000 utilizes a solid state control to monitor
performance and maintain humidity. The humidifier evaluates
the operation and alerts the operator to problem conditions
and prevents undesirable operation.
On initial start-up or a call for humidity, the humidifier will
attempt to fill to its full load amp rating. The unit will not
necessarily have a full cylinder of water. Water level depends
on the conductivity of the water. The more conductive the
water, the more current that can be passed through the same
volume of water.
If the water is not conductive enough to allow the unit
to reach full load amps (full capacity) on the initial fill, the
cylinder full light will indicate a full cylinder condition. The
unit will operate in this mode with repetitive fill and boil cycles
until the unit has concentrated enough minerals in the water
to reach the rated amp level.
Once full load amp (FLA) has been reached, the fill valve will
shut off. The unit will now compare the rate of change of amp
draw to a time cycle.
If the water in the cylinder is mineral laden and hence very
conductive, a drain cycle will be initiated.
Output
High Drain
Threshold
1.
After the drain cycle and/or the time cycle is completed, the
unit will refill and start the process over.
These cycles will repeat until:
•The call for humidity is satisfied.
•The cylinder is used up.
•A fault condition occurs.
On initial start-up, if the water is not conductive enough for
the unit to reach FLA, the water will stop filling when the
water reaches the cylinder full electrode. Once the unit has
entered a cylinder full condition it will operate with fill and
boil cycles only. By eliminating the drain cycle, the water
conductivity will be increased by producing pure steam and
leaving the minerals behind. The increased mineral levels
will raise the conductivity allowing the humidifier to draw
sufficient amperage to achieve FLA. Normal operation will
then commence.
As the electrodes in the cylinder are coated with minerals,
the water level will slowly increase to the cylinder full level.
Concentration of coating on electrodes will no longer allow
the unit to reach FLA. After a period of time, the unit will
display the red “Service” light indicating the need to change
the cylinder.
3.
2.
Capacity
Set Point
Low Drain
Threshold
General Time of Operation
Water Level
Cylinder
Full
Steadily Increase
Water Level
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Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
Key Features
Adjustable Setpoints (See Figure 7, Page 11)
Faults:
Capacity
• Range = 50-100%
• Preset at 100% for 6000-1
• Preset at 50% for 6000-2
Overcurrent
• 138% of Rated Current
• System Shutdown
Fill System
• Fill valve open for 6 hours without achieving capacity
setpoint or cylinder full
• System Shutdown
Low Drain Threshold
• Range = 50-100%
• Preset at 90%
End of Cylinder Life
• 6 hours of operation while on cylinder full without
achieving capacity setpoint.
• System Shutdown
Cycle Time
• Range = 30-180 seconds
• Preset at 60 seconds
•
•
Operation using water of less than 100 micromho is
not recommended.
Typically 500-2000 hours of cylinder operation can
be obtained. Your actual cylinder life may be higher
or lower depending on the exact composition of
your water supply.
ADJUSTABLE LOUVER
INTEGRAL, QUIET
OPERATING FAN
FILL SYSTEM
(INTEGRAL 1" AIR GAP PREVENTS
REVERSE SIPHONING TO POTABLE
WATER SUPPLY; "ADJUSTABLE
METERING VALVE ACCOMODATES
WATER PRESSURES UP TO 100 PSI."
"CYLINDER FULL" ELECTRODE
(RED WIRE)
INTERNAL CIRCUIT BREAKER
INTEGRAL HUMIDISTAT
CYLINDER - REPLACEABLE
GLASS FILLED POLYPROPYLENE
ISOLATED CONTROL COMPARTMENT
WITH SOLID STATE CONTROLS
POWER, CYLINDER FULL,
AND SERVICE INDICATOR LIGHTS
ON/OFF/DRAIN SWITCH
DRAIN SYSTEM
(SEALED DRAIN VALVE, ADJUSTABLE
DRAIN THRESHOLD AND CYCLE
TIME PROVIDE EXTENDED LIFE.)
COVER INTERLOCK SWITCH
(PREVENTS UNIT OPERATION
WITH COVER OFF)
HERRMIDIFIER
Herrtronic® Model 6000
CONCEALED FILL AND
DRAIN CONNECTIONS
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Installation, Operation, & Maintenance Manual
Engineering and Application
SECTION III INSTALLATION INSTRUCTIONS
The HERRMIDIFIER 6000 Series Steam Humidifiers can be
applied in a variety of applications. The simplest application is
to utilize the model with the built-in blower package. The steam
generated by the unit is distributed into the conditioned space by
the built-in blower package (Figure 1).
Mounting
The cabinet is designed to safely contain the working components
of the HERRMIDIFIER 6000 series humidifier and dissipate heat
to protect the electronics. Locate humidifier in a manner to allow
routine inspection and any necessary maintenance. DO NOT
install the unit above false ceilings or around valuable property,
where a malfunction could cause damage. Correct positioning of
the humidifier is important to allow for proper operation and easy
maintenance. Minimum clearance around the cabinet should be
maintained as follows:
5 FEET MINIMUM
5 FEET MINIMUM
Minimum Clearances
Around Cabinet
18 INCHES
MINIMUM
Left
6”
Right
12”
Top
18”
Bottom
12”
Note: Duct liner may be used
with a maximum
thickness of 1".
5 FEET MINIMUM
Remove foam packing from top of cylinder. Four lag bolts, (2)
5/16” and (2) 1/4”, are supplied with the 6000 unit. Install the
top two lag bolts (5/16”) according to the dimensions in Figure
2. Hang the unit on the wall, and then install the bottom two lag
bolts (1/4”) and secure all four bolts. Be sure the unit is level and
mounted directly to the wall to wood studs at least 2” thick (or
equivalent). Operating weight: 35 lbs.
Figure 1
9"
Back View
4 1/4"
Allowable Operating Conditions:
Ambient Temperature: 40°F (4°C) to 120°F (50°C)
Ambient Relative Humidity: 0% to 90% (non-condensing)
Line Voltage: -15% to +10% of Nominal
Frequency: 50/60 HZ.
Water Supply Pressure: 20 psi – 100 psi.
1"
5/16 x 5/8 DIA.
KEYHOLE
MOUNTING SLOT
1/2"
16 1/2"
1 1/2"
5/16" DIA.
Figure 2
WARNING!
Do not mount any controls inside the unit or tap power
from any location in the unit, except as stated in these
instructions. Do not place objects near the cabinet. Do
not attach to dry wall without studs. At least one 5/16”
and one 1/4” lag bolt must be located on a stud.
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Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
Plumbing
Steam Distribution
To make the necessary connections for water fill and drain, the
following steps are required: (refer to Figure 3 for locations)
1. Install external shutoff valve between the water supply and
the humidifier for ease in servicing the unit.
2. Connect water supply to the 1/4’ compression fitting on the
bottom of the cabinet.
The 6000 Series Steam Humidifier with the built-in blower pack
should be mounted a minimum of 18” from the ceiling. There
should also be 5 feet of horizontal clearance in front of the unit
to prevent steam from condensing on obstructions (See Figure
1). There is an adjustable louver to adjust the direction of the
steam plume.
CAUTION!
Do not use reverse osmosis or demineralized water
treatment without first consulting the factory. This
water may not be sufficiently conductive to allow proper
operation. Consult factory if water is outside the range of
allowable conductivities. Do not use hot water.
3. Connect the 3/4” tube from the accessory pack to the drain
reservoir. Cut the tube to the length necessary to reach the
drain.
4. Insert the other end of the tube into a minimum 6” vertical
length of the 1-1/4” minimum I.D. drain line. The balance of
the drain line should be 1” I.D. minimum with a minimum
1/8” per foot slope. (See Figure 3.)
WARNING!
Do not adjust this louver to extreme angles as it will
restrict the airflow causing condensation to form around
the steam distribution manifold.
WARNING!
Locate away from areas where people can walk into the
steam path.
Wiring
All field wiring should be routed up through the knockout in the
bottom panel or in the back of the unit.
WARNING!
7/8" KNOCKOUT
If the drain line is exposed, it is recommended that it be
insulated for safety. Do not use PVC drain line unless
“Drain Tempering” is enabled.
BOTTOM VIEW
2" KNOCKOUT
1"
NOTE:
Inlet water pressure must be in the range of 20-100
psig. Consult the factory if you are outside this range.
Softened water may be used but requires that the low
drain threshold be adjusted. Drain water can be tempered
to lower its temperature.
1 3/8"
1 1/2"
3 3/4"
FIgure 4
Supply Power
DRAIN LINE TO BE 1" MIN. I.D. TERMINATING
AT THE UNIT WITH 6" OF 1 1/4" I.D. VERTICAL
PLUMBING.
THIS ALLOWS AN AIR GAP BETWEEN THE
1" O.D. DRAIN TUBE FROM THE UNIT AND
THE DRAIN.
UNIT HOUSING
DRAIN RESERVOIR
FILL CONNECTION
3/4" I.D./1" MAX. O.D.
FLEXIBLE DRAIN HOSE
1/4" O.D. COPPER OR
POLY TUBE WATER FILL LINE
1. Ensure that minimum circuit ampacity is 15 amps.
2. Terminals are provided in the electrical compartment for
field connection of the main power supply legs (single
phase) and a ground wire.
3. Install external overcurrent protection and provide wiring in
accordance with the NEC, state and local codes.
4. Power supply must be “clean”: free of spikes, surges and
sags: -15% to +10% of nominal.
Electrical Characteristics
1 1/4" I.D. COPPER
OR PVC DRAIN PIPE
BOTTOM COVER
Capacity
Steam Output
Lbs. / hr
4
Kg / hr
1.8
1" I.D. COPPER
OR PVC DRAIN PIPE
Figure 3
Herrtronic® Model 6000
8
3.6
Input KW
1.33
Volts/Ph:
2.66
Amps
120/1
11.8
N/A
230/1
5.9
11.8
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Installation, Operation, & Maintenance Manual
Control Circuit Connections
WARNING!
Do not install any controls inside the HERRMIDIFIER 6000
cabinet. Installations of any extraneous devices inside
the electrical compartment may cause erratic behavior of
the circuitry and will VOID the warranty.
The 6000 units with built-in blowers require no external control
wiring since the humidistat is built-in.
SECTION IV OPERATING INSTRUCTIONS
Start-up Instructions
1. Check that the humidifier is properly mounted and level.
2. Check that the water fill and drain are properly connected.
3. Check that the correct voltage and amperage service are
supplied.
4. With power off, double check all electrical connections and
plumbing connections to ensure that they did not loosen
during shipment.
5. With the “on-off-drain” switch in the “off” position, and the
control humidistat at its lowest setting, turn on the main
disconnect. The contactor should remain deenergized
and the power light should remain “off”. Place the “on-offdrain” switch in the “on” position and the power light should
illuminate.
6. Turn the control humidistat up to its highest setting. The
contactor should pull in.
7. After approximately a 5 second delay, the fill valve energizes
and water begins to fill the cylinder to the preset amp level
or cylinder full condition, depending on the incoming water
supply. When starting up the unit, it is best to put an amp
clamp on the power leg that passes through the toroid
transformer. Ensure that the humidifier fills to “cylinder full”
(approximately 1.5” from the top of the cylinder), or that
the amperage reaches the data plate maximum and the fill
valve de-energizes.
8. All units are equipped with a drain tempering feature which
mixes cold fill water with the hot drain water to protect
drain piping. Depending on your fill water pressure, some
adjustment of the fill metering valve may be necessary to
ensure drain water of less than 140°F. (See Figure 5.) To
deactivate, remove diode from socket CRI8 from circuit
board. (See Figure 7.)
9. Reset control humidistat to its desired settings. Typical
control humidistat settings are 30-40%.
NOTE:
The capacity of the humidifier can be adjusted between
50% and 100% of the maximum level by adjusting the
capacity adjustment potentiometer (labeled R39) on the
main circuit board. All units are set from the factory to
produce 4 lbs/hr. If the psychrometric conditions permit,
the 6000—2 may be increased to 8 lbs/hr by adjusting
R39 from 50% to 100% capacity. Refer to Figure 7.
CAUTION!
Inadequate airflow may allow humidity to collect in areas
causing condensation.
RELAY
FILL VALVE
MOUNTING SCREWS
CYLINDER FULL
INTERFACE
FILL VALVE
ADJUSTING SCREW
L1 L2
TRANSFORMER
TERMINAL BLOCK
NOTE:
If upon initial start-up of this humidifier the cylinder is
slow in heating and/or the service light continues to come
on, drain the cylinder to 1/4 full. Turn off power at breaker, obtain some Alka-Seltzer tablets and crumble 1/2 of
one tablet (Alka-Seltzer) into the grey fill tee. Change the
middle blue dial on the left side of the circuit board, R18,
from 90% to 87%. Then turn the breaker on and run the
unit. If you have had to use these this step on a 240V unit
(6000-2,4), it is advisable that you order a GT-176-1 replacement cylinder rather than the standard replacement
cylinder in the future so this procedure will not need to
be repeated. Upon receipt of the GT-176-1 cylinder, adjust
the dial, R18, on the circuit board back to 90%.
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VIEW IN FROM RIGHTSIDE OF UNIT
Figure 5
Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
Installation Checklist
MAKE SURE LOUVER IS ADJUSTED TO
PREVENT STEAM FROM CONDENSING
ON COVER.
FILL VALVE
POWER SUPPLY:
1. MATCHES DATA PLATE
2. IS PROPERLY GROUNDED
3. CAN CARRY AT LEAST 15 AMPS
4. EXTERNAL FUSED DISCONNECT
PROVIDED BY OTHERS.
MAKE SURE ALL HIGH VOLTAGE
ELECTRICAL CONNECTIONS ON
STEAM CYLINDER ARE TIGHT.
MAKE SURE ALL HIGH VOLTAGE
ELECTRICAL CONNECTIONS
ARE TIGHT, 15-20 IN-LBS.
3/4" MIN. I.D./ 1" MAX. O.D.
FLEXIBLE DRAIN CONNECTION
DRAIN RESERVOIR
DURING FILL CYCLE, CHECK TO SEE IF ANY WATER
IS DRAINING FROM UNIT. A LOT OF WATER FLOWING
OUT OF THE UNIT WOULD INDICATE EXCESSIVE
WATER PRESSURE. TURN OFF POWER AND REDUCE
THROUGH METERING FILL SOLENOID OR SUPPLY
VALVE TO HUMIDIFIER. A SMALL AMOUNT OF WATER
IS NOT UNCOMMON.
6" MIN. LENGTH OF 1 1/4" MIN. I.D. VERTICAL COPPER LINE.
IF PVC IS USED, ADD DRAIN TEMPERING.
BALANCE OF DRAIN LINE TO BE 1" MIN. I.D.
DRAIN WATER TEMPERATURE IS SUITABLE FOR PLUMBING.
NOTE:
The HERRMIDIFIER 6000 Humidifier checklist is provided to help the installer ensure a successful installation. If further
assistance is needed from the HERRMIDIFIER representative or the factory, the checklist is expected to be completed. If
a job site visit is required from the HERRMIDIFIER representative or the factory, and the checklist has not been accurately
completed, additional charges may be applied by the individual(s) representing HERRMIDIFIER. If the visit uncovers a
component malfunction, the parts will be replaced under warranty.
_____________________________________________
Project Name
____________________________________________
Checklist completed by
_____________________________________________
Humidifier Installer (Company)
____________________________________________
Checklist completion date
Herrtronic® Model 6000
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9
Installation, Operation, & Maintenance Manual
Maintenance
To maintain output, the water level in the cylinder will slowly
move upwards, exposing new electrode to the water as the
electrodes become coated with minerals. Eventually, all of the
usable electrode surfaces will be coated and the cylinder will be
full of water. At this point, the output will begin to drop and the red
“service” light will come on. The unit will shutdown. This indicates
the need to change the cylinder, typically 500-2000 hours of
operation, depending on the quality of the fill water supply.
To replace the cylinder
1. Drain cylinder completely using the ‘on-off- drain” switch.
2. Turn off power to the unit at the external disconnect.
Disconnect electrode power wires (#38 & #39) and
cylinder full electrode wire (#29) from the cylinder. These
connections are 1/4” quick connects. (See Figure 6B, 6C,
& 6D.)
3. Disconnect 1” hose at top of cylinder.
4. Remove cylinder, clean out the drain cup and insert the new
5.
6.
7.
8.
9.
cylinder. Be sure that “o” ring is in place on the cylinder fill/
drain port prior to installation. (See Figure 6A.) New o-ring
is included with each replacement cylinder.
Clean and check both the fill and drain valves while servicing
the unit.
Check the strainer. If it is dirty or restricting the waterreplace it.
Install cylinder in unit by pushing downward with a slight
twisting motion, while ensuring proper orientation of cylinder
within cabinet.
Reconnect electrode power wires (#38 & #39) and cylinder
full electrode, wire (#29). Make sure that all electrical
connections are securely tightened. (See Figures 6B, 6C,
& 6D.)
Follow cold start-up instructions on page 8. Monitor amp
draw for several cycles. .
Extended Shutdown
Always drain cylinder completely if unit will be off for an extended
period of time. This will preserve the life of the cylinder.
CYLINDER FILL/DRAIN PORT
EST-1060-3
O-RING
POWER WIRE CONNECTIONS
CYLINDER FULL
ELECTRODE
WIRE #29
POWER
WIRE #39
POWER
WIRE #38
Figure 6B
Figure 6A
CYLINDER FULL ELECTRODE CONNECTION
PROTECTIVE BOOT
(SHOWN TRANSPARENT FOR CLARITY)
PROTECTIVE BOOT
(SHOWN TRANSPARENT FOR CLARITY)
RED POWER WIRE
ELECTRODE CONNECTION
1/4"-20 NUT
BLACK POWER WIRE
1/4" LOCK WASHER
1/4" LOCK WASHER
GROMMET
1/4" MALE
QUICK CONNECT
1/4" MALE
QUICK CONNECT
Figure 6C
10
1/4"-20 NUT
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Figure 6D
Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
SECTION V TROUBLESHOOTING GUIDE
Test Point #1:
Provides exact reading of drain threshold setting.
Test Point #2:
Provides circuit board reference voltage. Should always
read 4 VDC +/-2%.
Test Point #3:
Provides actual percentage of output. For example, a unit
running at 80% of maximum output would have a Test Point #3
to ground reading of 3.2 VDC.
All HERRMIDIFIER 6000 Series Humidifiers are manufactured
under strict quality control and are subjected to a complete
operational test before shipment. All circuit board adjustments
are made at the factory and should not be adjusted beyond the
guidelines set in this troubleshooting guide without first consulting
a factory representative. The following information is for your help
and reference. If you still experience difficulty after trying these
remedies, contact your HERRMIDIFIER representative.
Maximum Capacity Setpoint
The potentiometer labeled “R39” located in the top left-hand
corner of the board allows adjustment of the unit’s capacity in
the range of 50-100% of maximum.
WARNING!
The HERRMIDIFIER 6000 Series Electronic Steam
Humidifier cabinet was designed to house and shield
the components from outside interference. Absolutely
NO other components may be mounted inside or
be electrically tapped into the humidifier without
HERRMIDIFIER’s express written permission. Failure to
heed this warning will void your warranty.
Circuit Board Settings
Models
Time Cycle
R23
Low Drain
Setting, R18
Capacity,
R39
Standard Settings
TEST POINTS
Each circuit board (See Figure 7) features three test points to
aid in the troubleshooting process. Each of these test points
works on a 0-4 VDC scale. “0 VDC” = 0%. “4 VDC” = 100%.
All readings are between the test point and ground (Molex J1,
terminal 11 [far right of molex connector, wire #11).
All
60 sec
90% at 3.6V
100% at 4V
High Conductivity Settings (> 1000 micromho)
All
84 sec
93% at 3.72V 90% at 3.6V
Softened Water Settings (750-1000 micromho)
All
60 sec
92% at 3.68V 95% at 3.8V
Low Conductivity Settings (<100 micromho)
All
Capacity adjustment R39
60 sec
100% at 4V
CR17 LED - overamp
condition indicator if
illuminated
copyright 1986 HERRMIDIFIER CO, INC.
CAP
ADJ
Test point #3
(Output capacity)
85% at 3.4V
CR18 diode drain
tempering socket
CR17
CR18
TP3
PROP
DISPLAY
R4
R4 Capacity
resistor socket
Low drain
threshold R18
(50-100%)
Test point #1
(Drain threshold reading)
Test point #2
(Equilibrium voltage reading)
Cycle timer R23
(30-180%)
TP1
TP2
%
R18
SEC
R23
J1
J1 Connector
Figure 7
Herrtronic® Model 6000
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11
Installation, Operation, & Maintenance Manual
Unit Detected Faults: (Red Service Light is ON)
Problem / Symptom
Probable Cause
Reason - Correction
Overcurrent
The alarm condition occurs when an
overcurrent situation (>138% of rated
current) has occurred and the humidifier
has shut down to prevent any damage.
This alarm indicates that there has been
a significant reduction in resistance between the main legs of the supply power
and the humidifier has been shut down to
prevent damage and should be serviced
before it is restarted. Overcurrent LED
CR 17 (Figure 7) is illuminated.
Dead short between electrodes.
Replace the steam cylinder. Check resistance between electrodes with power
“off”
Restricted or blocked drain.
Clean and inspect drain system.
Restricted fill system
Clean and inspect the fill system. Check
for restriction or loss of supply pressure.
Check amp draw to unit during start-up.
If amp draw greatly exceeds rated amp
draw, the drain threshold pot, labeled
“% adj.” (R18), must be increased 2% to
increase the frequency and duration of
drains to reduce the conductivity inside
the cylinder.
Manually drain the unit and restart.
End of Cylinder
This alarm condition occurs if the humidifier is unable to reach full output over a 6
hour timeframe. It is constantly switching
between “fill” and “cylinder full” modes.
This alarm indicates a need to change
the cylinder, that the water supply is low
in conductivity, or that a foaming condition exists:
End of cylinder life – Cylinder life is
typically between 500 and 2000 hours,
depending on incoming water supply.
For emergency use, you may restart the
humidifier with the capacity setpoint,
R39, at a lower level to allow operation
until a replacement steam cylinder can
be obtained. To clear the fault, turn the
main disconnect to the unit “off” and then
back “on”.
If incoming water supply is less than 100
micromho, the unit may not be able to
pass the rated current through the water.
See – NON-FAULT ACTIVATED PROBLEMS GUIDE – “Unit fills to the cylinder
full condition and remains cold”
Foaming condition exists.
Flush and fill the steam cylinder several
times and restart. If it persists, you must
filter or treat the water to remove the
foaming agent. See circuit board settings
on previous page if supply water is softened. See NON – FAULT ACTIVATED
PROBLEMS GUIDE – “Water foaming
inside the cylinder”
Loss of or restricted water supply
Check fill system.
Leaking drain system.
Check drain system.
Defective drain valve.
Repair and replace as required.
Defective fill valve.
Repair and replace as required.
Fill System Fault
This alarm condition occurs when the fill
valve has been energized for a 6 hour
timeframe. The humidifier has been
shutdown to prevent any damage.
Incoming water conductivity is outside
Consult the factory for options.
the range of normal circuit board settings.
NOTE: The three fault conditions outlined above will cause the humidifier to shut down and the service light on the front
of the unit to illuminate. To clear these faults, the main power must be turned “off” and back “on” again.
12
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Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
Non-Fault Activated Problems:
Problem / Symptom
Reason - Correction
24 VAC circuit breaker trips as
soon as power switch is turned
“on”.
Check the wiring at the 24 VAC breaker for a short or loose connection.
Disconnect the contactor coil from the circuit and repeat. If 24 volt breaker doesn’t blow,
replace the contactor.
Replace the main circuit board.
24 VAC circuit breaker trips after
the unit is turned on for about 15
seconds.
Disconnect fill valve from electrical circuit. If circuit breaker doesn’t trip, replace the fill
valve.
Replace the main circuit board
24 VAC Circuit breaker trips when- Disconnect drain valve from electrical circuit. If circuit breaker doesn’t trip, replace the drain
ever the drain valve activates
valve.
Remove the drain valve and ensure that it is clean and free of any obstructing mineral
deposits.
Replace the main circuit board.
Humidifier turned on but will not
operate. Power lamp is “off”.
Check power supply.
Check circuit breaker.
Check connector J1 on the circuit board and ensure that it is plugged into the circuit board
properly and that no wires are loose.
Ensure that there is 24 VAC between pole #9 and #11 connector J1. If not, check wiring.
Check door interlock.
Unit turned “on”. Contactor pulled
in, but no water is entering the
cylinder.
Check external shutoff valves and open if closed.
Check strainer and fill valve for clogs. Turn adjusting screw (Figure 5, page 8).
Check fill valve coil to determine if it is receiving 24 VAC. If so, replace the valve.
Check for break in wiring.
Excessive arcing in cylinder
Check drain valve and ensure that when it activates it drains freely. Clean if necessary.
Replace valve if defective.
Check water supply. If it is softened, increase the drain threshold pot, “% adj.” (R18), up to
92% at 3.68VDC. (See Figure 7, page 11.)
Use high conductivity settings if water supply is very hard, >750 micromho.
Unit filling slower or at the same rate as the water is boiling, causing over concentration and
foaming. Check restriction in fill line. Adjust the metering fill valve to allow greater flow of
water. (See Figure 5.)
Have water analyzed. If iron content is greater than .1 mg/liter, a filter will have to be used.
Consult factory with water analysis
Unit fills to the cylinder full condition and remains cold.
Check between Test Point #3 and ground with a multimeter set on VDC scale. Confirm the
circuit board is seeing low current flow (<2.8 VDC). Proceed to next step.
If on initial fill, unit reaches less than 70% of rated capacity (2.8 VDC on Test Point #3),
adjust the drain threshold pot, “% adj.” (R18), down 2-3%. Manually drain the unit down
completely and add ½ Alka Seltzer tablet via the fill tee(GT-120). Restart the unit while
monitoring the amp draw. Fill unit ¼ full and turn “off” for several minutes to allow tablets to
dissolve. Restart unit. If amperage rises rapidly, it may be necessary to dilute the water. If
amperage rises slowly, add another Alka-Seltzer tablet.
Check that drain valve is sealing properly.
Check the water conductivity and consult the factory.
Unit turned on and cycles for a
short period of time. Then it stops
in the middle of a fill cycle and
won’t reset until boiling stops.
Herrtronic® Model 6000
Check cylinder fill interface connections.
Check cylinder connections. (See Figures 6A-6D, page 10.)
Check items in next troubleshooting tip concerning foaming.
Check amperage between cylinder full electrode and cylinder full interface terminal #1. If it
is greater than 7.0 mA AC, take a fill water sample and consult the factory.
w w w. h e r r m i d i f i e r - h v a c . c o m
13
Installation, Operation, & Maintenance Manual
Problem/Symptom
Reason - Correction
Water “foaming” inside the cylinder.
Check drain valve and ensure that water drains freely. If necessary, clean or replace valve if
defective.
Check water supply. If it is commercially softened, either increase the drain threshold (R18)
to 92% or reconnect the unit to raw water. Drain and restart the unit. If the unit is connected to a hot water line, reconnect to the cold water line. (3.68VDC)
If steam line is hard copper, drain cylinder and test unit operation disconnected from steam
line to ensure flux from solder joints is not causing foaming.
Observe the fill tee(GT-120). If water is going down the overflow and the water level is low:
Check to ensure that static pressure in the duct is not forcing water down the overflow
instead of allowing water to enter the cylinder.
Adjust the fill metering valve to regulate the water flow to the cylinder. (Figure 5.)
Unit filling slower or at the same rate as it is boiling off, causing over concentration and
foaming. Fill rate must be increased. Open metering valve.
If the fill valve is already fully open, get a water analysis and consult the factory.
Cylinder fills and overflows
Check cylinder wiring. (See Figures 6A-6D, page 10.)
Check wiring of cylinder full interface.
If more than 1.9 mA AC is passing between the cylinder full electrode and interface terminal #1, and when placing multimeter between terminal #3 and ground yields approximately
negative 11 VDC, replace the interface.
Replace the circuit board.
Consult the factory after obtaining a water analysis
Unit turned on, fills to full amp
draw, stops filling, and after a
delay, the circuit breaker trips and
the service light comes on.
Use the “On-Off Drain” switch to drain the cylinder. Turn the capacity adjustment pot(R39)
on the main circuit board to 80% and restart the humidifier. (3.2VDC)
Unit cycle “on” and “off” rapidly
Check location and setting of high limit humidistat
Cabinet leaks
Check for loose connections
Check the drain valve and clean or replace if necessary.
If the drain valve doesn’t come on before the service light illuminates, replace the main
circuit board.
Fill tube out of fill tee
Steam cylinder out of drain cup
Cabinet drain backing up, kink in drain line
14
w w w. h e r r m i d i f i e r - h v a c . c o m
Herrtronic® Model 6000
FAN
37
GRN
30
RELAY
GROUNDED
TO CHASSIS
POWER
TERMINAL BLOCK
BLK
BLK
BLK
35
BLK
L2
POWER ELECTRODES
39
BLK
33
BLK
38
34
32
31
WHT
BLK
RED
TOROID
RED
13
BLK
(240V)
BLK
BLK
36
18
BLK
32
(120V)
BLK
13
3
1 2
4
BLK
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6
40
32
7
MOLEX
5
32
BLK
8
CYLINDER
FULL
ELECTRODE
(240V)
BLK
(240V)
BLK
BLK (120V)
31
9 10 11
J1
29
TRANSFORMER
4
1
3
2
23
7 8
WHT
BLK
2A BREAKER
CYLINDER FULL
INTERFACE
22
16 PIN DIP PLUG
RED
35
BLK
(24 RET)
(24 VAC)
BLK
15
BLK
L1
1
RED
5
ORG
19
7
RED
BLK
8
5
9
BLK
ORG
BLK
16
6
5
4
10
24
RED
SWITCH
3
1
2
25
BLK
BLUE
12
22
6
20
WHT
ORG
WHT
WHT
DRAIN
VALVE
RED
RED
3
2
9
8
7
11
WHT
DOOR
INTERLOCK
RED
WHT
RED
237
OHM
25
5
RELAY/TIMER
BLK
WHT
BLK
BLK
BLK
FILL
VALVE
14
19
16
34
30
RED
27
GND
3
RED
2
ORG
9
BLK
ORG
3
WHT
6
WHT
8
BLK
10
BLK
11
WHT
ORG
12
28
BLUE
SERVICE
LIGHT
POWER
LIGHT
HUMIDISTAT
CYLINDER
FULL IND.
27
RED
WIRING DIAGRAM
15
WHT
20
WHT
21
WHT
18
Herrtronic® Model 6000
17
POWER INPUT (120 VAC FOR 6000-1 AND 6000-3)
(240 VAC FOR 6000-2 AND 6000-4)
Installation, Operation, & Maintenance Manual
15
16
CYLINDER ASSEMBLY
GT-202
(6000-2)
EST-207
EST-1516
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EST-1533-3
(6000-1)
CYLINDER ASSEMBLY
GT-176-1
GT-262
EST-207
GT-120
GT-122
1095
DRAIN SUB-ASSEMBLY
EST-1012
GT-262
EST-1415
4060
FILL SUB-ASSEMBLY
EST-1513
EST-1225-KIT
EST-1501
GT-116
GT-153
GT-116
EST-1415
GT-196-KIT
EST-1522A
EST-207
121800-004
EST-1143
EST-105A
EST-1409
1845
EST-353
8260R
EST-1142
EST-1141
EST-1407
EST-1517-1 (120V)
EST-1518-1 (240V)
EST-1519
EST-1530
EST-1409
EST-1136
1860
EST-177
EST-003PA
EST-1405
EST-1512
EST-353
EST-1001B
EST-353
EST-1514
Installation, Operation, & Maintenance Manual
Herrtronic® Model 6000
Installation, Operation, & Maintenance Manual
Parts List
1095
Hose Clamp SS
1845
Door Interlock
1860
KEP Nut, 6-32
4060
Fitting, 1/4” Bulkhead
8620R
Humidistat Element
121800-004
KEP Nut, 8-32
EST-003PA
Cylinder Full Interface
EST-105A
Toroid Transformer
EST-177
Nylon Spacer
EST-207
Clamp
EST-353
Bushing
EST-1001B
Main Circuit Board
EST-1136
Nylon Washer
EST-1141
Red Lamp
EST-1142
Green Lamp (2)
EST-1143
On Off Drain Switch
EST-1225-KIT Drain Reservoir Kit
EST-1405Timer/Relay
EST-1407Knob
EST-1409
Universal Bushing
EST-1415Tubing
EST-1501
Steam Manifold
EST-1512
Transformer 120/240 to 24 VAC
EST-1513
Distribution Louver
EST-1514
Relay, 2 pole, 20 A
EST-1516
Steam Hose
EST-1517-1
Fan, 120V
EST-1518-1
Fan, 240V
EST-1519
Circuit Breaker, 2A
EST-1522A
Fill Assembly
EST-1530
Terminal Block
EST-1533-3
Drain Valve Kit
EST-1542
Power Wire Assembly (Not Shown)
GT-116
Celcon Compression Nuts
GT-120
Fill Tee
GT-122
Nylon Clamp
GT-153
Strainer SS
GT-176-1
Low Conductivity Steam Cylinder Assembly (Standard 120V Units)
GT-196-KIT
Fill Valve Replacement Kit
GT-202
Steam Cylinder Assembly (Standard 240V Units)
GT-262
Hose, 1/2” I.D. Overflow
Herrtronic® Model 6000
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17
HERRMIDIFIER®
101 McNeill Rd. | Sanford, NC 27330
P: 800.884.0002 | F: 800.458.2379 | www.herrmidifier-hvac.com | [email protected]
Form No. OM-273 Rev. 01/17
© HERRMIDIFIER 2017. All Rights Reserved.

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