Armstrong Series HC- 6100 Manual

HumidiClean™Humidifiers
Series HC- 6100/6300/6500/6700
Installation, Operation and
Maintenance Instructions
539D-EN
Please read and save
these instructions

2Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Contents
Warning Labels ................................... 3-4
Model Number Description ..................... 5
Installation ........................................ 6-13
Display Menus .................................... 14-15
Start-Up Procedure and Operation ............ 16
Maintenance ...................................... 17-21
Troubleshooting .................................. 21-26
Typical Wiring Schematic ....................... 27-36
Repair Parts ....................................... 37-41
PID Control ........................................ 42
Software Update .................................. 43-45
Communication ................................... 46-55
Dimensional Data ................................ 56-57
Start-Up Checklist ................................ 58-59
Start-Up Procedure .............................. 60
Warranty ........................................... 63

3
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Warning Labels
The Armstrong HumidiClean™ humidifier converts ordinary tap water or purified water to steam for distribution to
raise the relative humidity level.
To allow HumidiClean™ to function to its full capability, be certain to install in accordance with Armstrong
recommendations.
DANGER: ELECTRICAL SHOCK HAZARD HIGH VOLTAGES EXIST INSIDE THE HUMIDIFIER
TO PROTECT YOURSELF AND OTHERS FROM ACCIDENTAL SHOCKS:
1. Keep the humidifier locked during normal operation and store the key in a safe location away from the humidifier.
2. ALWAYS DISCONNECT THE POWER SUPPLY AT THE CIRCUIT BREAKER OR SAFETY SWITCH BEFORE OPENING
ANY COVERS AND DOORS!
3. Before servicing the humidifier, learn where the high voltage parts are. KEEP HANDS AND METAL TOOLS AWAY
FROM THESE AREAS!
Warning: All wiring and installation must be completed by qualified personnel only and
per the relevant local or national codes on electrical wiring. Negligence of this warning
might result in the loss of property or personal damage.
Warning: High Temperature! Material that is not resistant to high temperature should
not come in contact with these areas. Negligence of this warning might result in the
loss of property or personal damage.
Model HC-6100/HC-63000 Series
6010-ISO Electrical
Shock-Electrocution
6043-ISO Burn Hazard
Hot Surface

4Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Warning: Do not operate the supplied humidifier in combustible or explosive surroundings.
Warning: Do not operate the supplied humidifier if there is any damage to the cabinet or any components in humidifier
are damaged.
Warning: The main switch should be a connection breaker which has over current and leakage current protecting
functions per code EN60947-3 or EN60947-2 if point gap required by EN60947-3 can be fulfilled.
4. Physical environment and operating conditions
 •Ambienttemperature+4°C~+38°C(40°Fto100°F)
 •Humidity=50%at40°C(104°F),=90%at20°C(68°F)
 •Altitude=1000m(abovemeansealevel)(3300ft)
5. Transportation and storage conditions
Electrical equipment shall be designed to withstand, or suitable precautions shall be taken to protect against, the
effectsoftransportationandstoragetemperatureswithinarangeof-25°Cto+55°C(-15°Fto130°F)andfor
shortperiodsnotexceeding24h,upto+70°C(160°F).Suitablemeansshallbeprovidedtopreventdamagefrom
humidity, vibration and shock.
6. Requirements
 Thesupplydisconnectingdevice(i.e.aswitch-disconnect,adisconnectusedincombinationwithswitchingdevices,
oracircuit-breaker)shallfulfillallofthefollowingrequirements:
•IsolatetheelectricalequipmentfromthesupplyandhaveoneOFF(isolated)andoneONpositiononly,clearly
markedwith“O”and“I”(symbols60417-2-IEC-5008and60417-2-IEC-5007,see10.2.2),withtheactuating
directionsinaccordancewithIEC60447.Circuit-breakerthat,inaddition,hasareset(tripped)positionbetween
“O” and “I” are also deemed to satisfy this requirement.
•HaveavisiblegaporapositionindicatorwhichcannotindicateOFF(isolated)untilallcontactsareactually
open and there is an adequate isolating distance between all the contacts in accordance with IEC 60947-3.
•BeprovidedwithameanspermittingittobelockedintheOFF(isolated)position(e.g.bypadlocks).When
locked, remote as well as local closing shall be prevented.
•Disconnectallliveconductorsofitspowersupplycircuit.However,forTNsupplysystems,theneutral
conductor may or may not be disconnected. It is noted that in some countries, disconnection of the neutral
conductor(whenused)iscompulsory.
•Thehandleofthesupply-disconnectingswitchshallbelocatedbetween0.6mand1.7m(2ft.and5-1/2ft)
above the servicing level.
•Thedisconnectingswitchmusthaveovercurrentandoverloadprotectingfunctionsandinitializethemaslow
as possible under normal running.
•Thedisconnectingswitchshouldhaveabreakingcapacitysufficienttointerruptthelargestnormalrunning
currentofloads.Thebreakingcapacityrequiredshouldbeselectedaccordingtothetableonpage8.

5
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Model Number Description
Pre-Installation
1. Check Shipment.Aclaimshouldbefiledwiththetransportationcompany,(andreportedtoArmstrong),ifany
items are missing or damaged.
2. Check Local Codes. The installation of HumidiClean™ should be in accordance with all applicable building,
plumbing, and electrical codes.
3. Site Selection. The humidifier should be installed in an easily accessible location. Do not install the unit where
malfunction of the humidifier might cause damage to non-repairable, irreplaceable or priceless property.
Refer to Installation section for other details regarding site selection.
Series HumidiClean™ Humidifiers
HC - XXXX (DI) - XXX X
Type number
6100
6300
6500
6700
Quality of Water
Blank: Tap water
DI: Deionized or reverse osmosis
Rated Power
 InKW.Theminimumis3KW,andthemaximumis96KW.
Symbol of Rated Voltage
 A=Ratedvoltageofunitis208V
 D=Ratedvoltageofunitis480V
 B=Ratedvoltageofunitis240V/220V
 E=Ratedvoltageofunitis600V
 C=Ratedvoltageofunitis400V/380V

6Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
See Detail “A”
Pitch Min. 1” Per
12” Back to Unit
“P” Trap Drain
Every 20’ of Piping
or at Bottom of Vertical Run
24”
2” Insulated Copper
24”
1” Copper (Min) Pitched
1” Per 12” (Min) to Open Drain
1” ID Hose
Air Gap
Fused Disconnect or
Magnetic Breaker
within Sight of Unit
Water in 3/8” Copper
Type with Ball Valve
Hose Clamp
Steam Hose or Copper
Hose
Soldered Joints
1/2” or 3/8”
Copper Tube
Full Size Te e
2” Copper Te e
Reducer
To Drain
UP
Detail “A”
See Detail “A”
Pitch Min. 1” Per
12” Back to Unit
2” Insulated Copper
“P” Trap Drain Every
20’ of Piping or at
Bottom of Vertical Run
Pitch Min. 1” Per
12” Back to Unit
1” ID Hose
Air Gap
1” Copper (Min) Pitched
1” per 12” (Min) to
Open Drain
Water in 3/8” Copper
Type with Ball Valve
24”
Clearance
Fused Disconnect or
Magnetic Breaker
within Sight of Unit
Hose Clamp
Steam Hose or Copper
Hose
Soldered Joints
1/2” or 3/8”
Copper Tube UP
Full Size Te e
2” Copper Te e
Reducer
6” Min.
To Drain
Detail “A”
24”
Figure 6-1 HC-6100/6300 Installation
Figure 6-2 HC-6500/6700 Installation
Note: On all
HC6000 models
24” clearance is
required on both
sides and the front
of the unit.
Note: On all
HC6000 models
24” clearance is
required on both
sides and the front
of the unit.
Installation

7
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
HC-6100/6300 Mounting
TheHumidiClean™modelsHC-6100/6300aredesignedtobewallmounted.Awallmountingbracketand
lagscrewsareprovidedformountingon410mm(16”)centers.Theoperatingweightoftheunitis106kg
(233lbs).Aclearanceof600mm(23”)onthefrontandsidesofthecabinetisrequiredforservicing.
1. Position wall mounting bracket level on wall and mark the hole pattern. Make sure holes line up with
studs or other sturdy structure.
2.Use3/8”x1-1/2”lagscrewsprovidedtosecurethebracket.
3.Hangthehumidifieronthewallmountingbracket.Thedryweightoftheunitis70kg(154lbs).
HC-6500/6700 Mounting
TheHC-6500/6700HumidiClean™isdesignedtobefloormountedonalevelsurface.Theoperating
weightis230kg(507lbs),aclearanceof610mm(24”)isrequiredforthefrontandsides.
Water Fill Supply
Thehumidifiercanuseanypotableorpurifiedwatersupply.Waterpressuremustbe25-120psig.Water
temperaturemustbelessthan60°C(140°F).Thefillrateis.31GPMforHC6100/6300and1.2GPMfor
HC6500/6700units.
1. Install a shut-off valve near the unit.
2.Connectthewatersupplytothe3/8”compressionfittingonthefillwatersolenoidvalveonmodels
HC-6100/6300.TheHC6500/6700issuppliedwithacompressionfittingfor10mmplastictubing.A6’
piece of 10mm plastic tubing is included for the larger models. The access for the water supply tubing
is under the fill valve in the bottom wall.
Electrical Service Wiring
1. Connect main power supply wiring to high voltage terminals in unit. Read breaker size required on
humidifier’snameplateandrefertoTable8-1and8-2forHC-6100/6300wire(gage)required;Table8-3
and8-4forHC-6500/6700.Makesureaninterlockingcircuitbreakerorsafetyswitch(notfurnished)is
accessible and within sight of the unit.
2. The humidifier cabinet must be grounded. A ground lug is provided in the cabinet.
3.Useonlywirewithcopperconductorsratedat90°C(194°F)orhigherforpowersupplyandgrounding.

8Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Drainage
Connect HC-6000 drain to suitable waste
drainage system. HC-6100 and HC-6300
drainwatermaybeashotas70°C(158°F),
HC-6500andHC-6700maybeashotas57°C
(135°F).Usecleardrainhoseprovidedand
25mm(1”)copperpipepitchedawayfrom
unitat25mm(1”)inchperfoot.Anairgapto
preventbackflowisrequired.SeeFigure8-1.
Figure 8-1 HC-6100/6300/6500/6700
Table 8-1. Recommended Branch Circuits
Rating Amp 1-12 13-15 16-20 21-24 25-32 33-40 41-48 49-64 68-80 81-100 101-120 121-140 141-60
Wire (AWG) 14 12 10 10 8 8 6 4 3 1 0 0 0
(mm2) 3 4 6 6 10 10 16 25 35 50 50 70 95
Circuit Breaker 15 20 25 30 40 50 60 80 100 125 150 175 200
Table 8-2. Steam Capacities and Rating Amperages
Volts
(Vac)
HC6100/HC6100DI HC6300/HC6300DI
3 KW Unit 9 KW Unit 15 KW Unit 18 KW Unit 30 KW Unit
Nominal
Amperage
Rating
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage Rating Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Steam
Output
kg/hr
(lb/hr)
Phase Phase Three
Phase
Three
Phase
Three
Phase
Single Three Single Three
208 13.3 7.7 3.8(8.3) 39 23 11(24) 37 18(40) 46 22(48) 74 36(80)
240 12.9 7.5
4.1(9)
38 22
12(27)
36
20(45)
44
25(54)
72
41(90)
200 - 4.7 - 14 23 28 46
480 -3.8 - 11 18 22 36
600 - 3 - 9 15 18 30
Table 8-3. Steam Capacities and Rating Amperages
Volts
(Vac)
HC6500/6500DI
30 KW Unit 33.5 KW Unit 40 KW Unit 48 KW Unit 45 KW Unit
Nominal
Amperage
Rating Three
Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
208 84 41(90) - - - - - - 125 61(135)
240 - - - - 96 54(120) - - - -
400 - - 51 45(100) - - 73
65(144)
- -
480 - - - - - 58 - -
600 - - - - - 47 - -
Table 8-4. Steam Capacities and Rating Amperages
Volts
(Vac)
HC6500/6500DI HC6700/HC6700DI
50.3 KW Unit 60 KW Unit 72 KW Unit 96 KW Unit
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating Three
Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
Nominal
Amperage
Rating
Three Phase
Steam
Output
kg/hr
(lb/hr)
240/220 - - 144 82(180) - - - -
400/380 77 30(68) - - 110
98(216)
145
130(288)480 - - - - 87 116
600 - - - - 70 93
A
ir Gap 1” I.D. Clear Hose
Supplied with Unit
Fit Hose Inside
1-1/2” Pipe
1” or Larger
Copper Pipe

9
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Duct Steam Distribution
1. The dispersion tube should be proper length. Verify correct size from Table 9-1.
2.Installdispersiontube(s)horizontallyinductsoholesfaceupward.Airflowmustbeverticaluporhorizontal.Do
notrestrictductwithaheightof200mm(8”)orless.Installationsover10m/s(1800FPM)airvelocityarenot
recommended.Consultfactoryifairflowisverticaldownorairvelocityisover10m/s(1800FPM).Donotinstallin
ductedsystemswithtotalbackpressureexceeding150mm(6”),wc.Airflowshouldbeaminimumof250FPMfor
installations using dispersion tubing. Consult factory if velocity is below recommended level.
3.Thedispersiontube(s)shouldbelocatedupstreamofastraightductrun,withoutobstructions,3m(10feet)ormore
in length. Consult the factory if this distance is not available.
4.Cut2-3/8”(61mm)dispersiontubeinstallationhole.Fastenthemountingplatetoductwithsheetmetalscrews.Ifthe
dispersiontubeis900mm(35”)orlonger,supportthefarendwiththreadedrodorsimilarmeans.
5. Note:Forsteambeinggeneratedfromadeionized(DI)orreverseosmosis(RO)watersource,theuseof50mm(2”)
insulated stainless steel piping in lieu of copper is required. Pipe used for steam dispersion piping must be oil and
contaminate free. Premature element failure could result if oils or contaminates are present. Contact the factory with
questions.Connectdispersiontube(s)toHumidiClean™tankusing50mm(2”)nominalinsulatedcopperpipeand
hosecuffsprovided.Wedonotsuggeststeamdistributionpipingoffieldsuppliedrubberbasedcompoundstobe
usedforanyHumidiClean™application.Pitchpipebacktounit25mm(1”)perfoot.Thesteampipemustbefreeof
kinks and sags to allow for gravity drainage of condensate. Maximum pipe run distance from tank to dispersion tube
is12m(40feet)equivalentpipinglength.Avoidexcessiveuseofelbowsor45°changesindirection.A“P”trapshould
beinstalledevery6m(20feet),ofpipingrunoratthebottomofverticalrunsthatcannotdrainbacktothetank.See
Fig. 6-1 or 6-2 for piping detail.
6.Ifductstaticpressurepluspipingbackpressureisgreaterthan0.5inHG(6”WC),pleaseconsultthefactory.(See
Figure9-1forbackpressureinpiperun.)
Table 9-1. Dispersion Tube Length
Model
HC6100,
HC6100DI
Model
HC6100,
HC6100DI
“D” Dia.
Model HC6300,
HC6300DI, HC6500,
HC6500DI, HC6700,
HC6700DI
Model HC6300,
HC6300DI, HC6500,
HC6500DI, HC6700,
HC6700 DI “DL” Dia.
Steam Disp. Tube
Length “L”
mm (in)
Duct Width
Minimum
mm(in)
Maximum
mm (in)
D-1
1-1/2”
DL-1
2-3/8”
305(12) 280(11) 406(16)
D-1.5 DL-1.5 457(18) 432(17) 559(22)
D-2 DL-2 610(24) 584(23) 864(34)
D-3 DL-3 914(36) 889(35) 1168(46)
D-4 DL-4 1219(48) 1194(47) 1473(58)
D-5 DL-5 1524(60) 1499(59) 1778(70)
D-6 DL-6 1829(72) 1803(71) 2083(82)
D-7 DL-7 2133(84) 2108(83) 2388(94)
D-8 DL-8 2438(96) 2413(95) 2692(106)
D-9 DL-9 2743(108) 2718(107) 2997(118)
D-10 DL-10 3048(120) 3023(119) 3302(130)
Table 9-2.
Fitting Style
Equivalent
Linear
Piping (feet)
2”-45°Elbow 2.8
2”-90°Elbow 5.5
2”-90°LongElbow 3.5
2” - Tee 12
Figure 9-1 Figure 9-2

10 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Area Steam Distribution
TheEHF-3fanpackage(minimumof2requiredforHC-6500or3fortheHC-6700)isdesignedtobehungonawall
tooperateasaremotemounted,directareadischargeoption.Itincorporatesablowerratedat120v-1.28amps.CFM
ratingis463@1600RPM.Thefanpackagerequiresaseparate120voltpowersupply(optionalstepdowntransformer
available).ConsultArmstrongInstallationBulletinIB-95formoreinformation.
Alternative for shortened non-wettable vapor trail
For applications with particularly limited downstream absorption distance, Armstrong HumidiPack™ or ExpressPack may
beconsidered.HumidiPack™isaprefabricatedseparator/headerandmultipledispersiontubeassembly.ExpressPackisa
multi-tube steam dispersion panel which is shipped unassembled. The Armstrong HumidiPack™ or ExpressPack provide
uniform distribution and shortened non-wetting vapor trail. Consult Armstrong Installation Bulletin No. 560 or Bulletin
573 for more information.
Control Wiring
Whenknock-outforsensorwiringisremoved,anIP65compliantcablebushingwillberequiredtokeeptheelectric
cabinet in compliance with IP32.
Wiringforlowvoltagecontrolsshouldnotberuninsameconduitasthepowersupply.Useofshieldedwireoraseparate
dedicatedmetalconduitisrequired.Whenshieldedcableisused,shieldistobegroundedatthehumidifieronly.Thewire
shouldnotbelongerthan30meters(100ft).Ifthewireisoutofthislimit,pleasecontactArmstrong.RefertoFigures
11-1 and 11-2 for wiring schematics.
Control Humidistat
1. Locate control humidistat where it will sense the average air condition of the space to be humidified. Avoid areas of
restricted circulation or locations where the sensor will be subjected to drafts, localized heat or moisture sources.
2. Optional duct mounted humidistats are available to sense return or exhaust air, if preferred.
3. Set DIP switch S-2 on the PC board to the proper range for the humidistat control signal to be used. Also set voltage
source Berg Jumper S3 to proper range. See Fig. 10-1 for location of switches and pages 10 and 11 in tandem with the
applicable wiring diagram below for correct switch settings.
Figure 10-1

11
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Figure 11-1
Standard Humidistat
Figure 11-2
On/Off Humidistats
D51768 or
D51772
0-10 Vdc
Stat
A8581
High Limit
Humidistat
A9023
Pressure Switch
Modulating High
Limit Sensor
Main Stat/Sensor In
Supply
Outdoor
Temperature Sensor
Ground
Ground
Class 2
Alarm
High Limit/
Air Flow Switch
To Set Up:
1) S3 - 24 VAC (Top Position)
2) S2-1, 2, 3, 4, 5 Off
3) Select 0-10v “Signal” in the Setup Menu.
4) Select Humidistat “Sensor” in the Setup Menu.
2
1
6
Supply Brown
Orange Part #: A8581 or A8581A
Main Stat/Sensor In
Modulating
High Limit Sensor
Outdoor
Temperature Sensor
Ground
1) S3 to + 10vdc
2) S2 Off (All)

12 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Figure 12-1
0-10 Vdc or 4-20mA Control Signal
Figure 12-2
RH Sensors/Transmitters
Supply
Control
Signal
4-20ma Setup or 10 vdc Setup
1) S2-1, 2, 3 On if 4-20ma
2) S2 Off (All) If 0-10vdc
3) Select Corresponding Signal
Type In Setup Menu.
Main Stat/Sensor In
Modulating
High Limit Sensor
Outdoor
Temperature Sensor
Ground
S5079a,b,
c
Supply
Main Stat/Sensor In
Modulating
High Limit Sensor
Outdoor
Temperature Sensor
Ground
Main Control
Sensor
High Limit
Sensor
Outside
Temperature Sensor
(Optional)
SYM Function Description
S1
and
S3
Power SupplyS1 S3
24Vac: S4-2 on S4-1, 3 OffS3-1 on S3-2, 3, 4 off
24Vac: S4-1, 3 on S4-2 OffS3-2 on S3-1, 3, 4 off
10Vac: S4-1, 3 on S4-2 OffS3-3 on S3-1, 2, 4 off
5Vac: S4-1, 3 on S4-2 OffS3-4 on S3-1, 2, 3 off
4 on 5 off: Thermistor
4 off and 5 on: Temp. Sensor
Switch Positions
3: Outside Temp. Sensor
On: Current Signal
Off: Voltage Signal
4&5: Outside Temp. Sensor
Input Signal Type SelectS2
For Sensors Select
(S1 and S3 together)
At one time, only one digit of S3-1, 2, 3 or 4 should be on.
2: High Limit Sensor
Settings
1: Stat/Main Sensor
Select RH sensor in sensor select window in operation setup menu
if using high limit sensor, select high limit sensor, set high limit set
point, 85% default.
If using out temperature sensor, select “outside temperature”.
Select signal type in operation setup menu.
Select desired RH in operation setup menu.
Verify PID settings in operation setup menu.
Chart 12-3
Jumper and Dip Switch Settings
S3: Voltage Selector from the
Humidifier to the Stat
Pins 1&2- 24vac
Pins 3&4- 24VDC
Pins 5&6- 10vdc
Pins7&85vdc
S4: code erase and code write To Erase, place the jumper on pins 1&2. Leave the jumper on pin 4 during operation.
S2 Dip Switch:
1,2,3 ON – Current Input
1,2,3OFF–VoltageInput(DC)
4,5 OFF – NO Outdoor Temp in
4 Off 5 ON – Out door Temp In
4 ON 5 OFF NTC In
4ON5ON–N/A
J8 Jumper Pins 1,2 Write to Project
Pins 2,3 Read/Write

13
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
High Limit Humidistat
Removethejumpertabfromgroundandinofhighlimit/pressureswitchconnectionsandwirethehighlimitstat
betweentheseterminals.RefertoFigure11-1(theoverallwiringdiagram)formoreinformation.Aductmountedhigh
limit humidistat is recommended to prevent over-saturation of the duct air. Use an on-off controller that opens on fault
(highhumidity).Humidistatshouldbesetforamaximumof90%RH.Locatethehighlimithumidistatapproximately
3m(10feet)downstreamofthedispersionmanifold.If3m(10feet)isnotavailable,consultthefactory.Note: High limit
humidistat will be wired in series with duct pressure switch, if used, see Figure 11-1.
Airflow/Pressure Switch
An airflow switch is recommended to deactivate the humidifier when there is insufficient air flow in a duct system. A duct
pressureswitchispreferredasanairflowsensor.Thepressureswitchshouldopenoninsufficientairflow(openson
fault).Airflowswitchshouldbemountedinsupplyairductupstreamofhumidifierdispersion.Removethejumpertab
fromgroundandinofhighlimit/pressureswitchconnectionsandwiretheairflowsensorbetweentheseterminals.See
Figure11-1(theoverallwiringdiagram)formoreinformation.Completeinstallationandwiringinstructionsarecontained
in the duct pressure switch package.
State light will flash green if either high limit or air pressure switches are open.
Modulating High Limit Humidistat/Sensor
AmodulatinghighlimithumidistatmaybeusedonapplicationssuchasVariableAirVolume(VAV)orinsituationswhere
the duct RH required to maintain the room set point is near saturation. The modulating high limit alleviates the humidifier
fromoperatinginon/offifworkingnearthehighlimitsetpoint.SeeFigure11-1orFigure12-2forwiring.
Alarm Circuit
Theterminals3&4(normallyopenrelayexternalalarm)areconnectionsforaclassIINECalarmcircuit(switchclosure
only,1amp.maximum@24Vdcor0.5amp.@125Vac).Theswitchwillcloseiftheunitencountersanerrororwhen
servicelifehasexpireditwillnotengageifhighhumidity/sailswitchcircuitisopen.

14 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Display Menus

15
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.

16 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Start-Up Procedures and Operation
The HumidiClean™ humidifier converts ordinary tap water or purified water to steam for distribution to raise the relative
humidity level. The demand for humidity is sensed by a humidistat or sensor which sends a control signal to the HumidiClean™.
TheHumidiClean™isconnectedtothepowersupply(208,220/240,380/400,480or600Vac)throughaseparatecircuit
breakersuppliedbythecustomer.Whenpowerisinitiallysuppliedtotheunitfromthecircuitbreaker,theLCDwilldisplay
“ARMSTRONGHC6000”.The“POWER”LEDwillcomeonandtheunit’sfillvalvesolenoidisenergizedtoallowwatertoenter
thetankatarateof1.2L/min(.31GPM)(HC-6500/6700fillrateis3.735L/min(1GPM)).Note:Whenunitisturnedonthe
drain valve will energize for 6 sec. or until water level drops below the high water probe. If water level in tank is above the low
water level switch, assuming the air proving switch is close, the high limit humidity switch is closed, the heating elements will
be activated.
The water fill solenoid continues to be activated until the water level in the tank has energized the high water switch. Note: If fill
or drain valves are not energized when power is first applied, check LCD for diagnostic code. See DIAGNOSTICS section. The
heating elements will remain on to preheat the water inside the tank until the temperature of water has reached the aquastat set
point. During this preheat cycle the amperage draw of the tank can be checked with a clamp on amp meter. The amperage draw
on all high voltage wires connected to the main power supply terminal block should correspond to the value on the nameplate.
If aquastat has been disabled, the humidifier will go into a 3 minute warm-up once the water hits the low water probe.
After the heat-up time, the HumidiClean™ will continue to produce steam based on the demand signal, read from the humidistat
orcalculatedbyreadingtherelativehumidityandsetpoint.Ifthedemandsignaldropsbelow2%orthehighlimit/sailswitch
circuitopens,thecontactor(s)willopenandtheunitwillidle.Note:Ifthehumidifiershutsoffduetolowhumidistatdemand,
ademandsignalof4%orgreaterisneededtore-initiatesteamgeneration.Ifallthesignalsareconsistentasstatedabove,
HumidiClean™ will produce steam continuously and refill the tank with water when the low water level is reached. These fill
intervals will operate based on modulating fill settings in software.
Power to the heating elements is switched on and off by the triacs in the power module to achieve a modulating output based
onthedemandsignal.Thetriacutilizesa1/2secondcycletime.Forexample,witha50%humidistatdemandsignalthetriacs
wouldbeonfor1/4secondandofffor1/4second.Ifthetriacsarefullyon,thegreen“SIGNAL”LEDonthepowermodulewill
beonconstantly.Whenthetriacsstarttomodulate(switchpowertotheheatingelementsonandoff)theLEDwillshowthe
triac on condition and will appear to flicker or blink.
As HumidiClean™ continues to produce steam, the unit will accumulate and memorize the heating element active time for the
purposeofdefiningadraincycleandservicelife(thismemoryisnotaffectedbypoweroutages).WhentheHumidiClean™
heating elements have been on for the drain frequency setting, the unit activates the drain and fill solenoids and begins draining
the tank. The tank will drain with the water being tempered from an activated water fill solenoid. The drainage from the tank
will pass the low water switch, opening the switch and shutting off power to the heating elements. The drainage from the tank
shouldnotexceed70°C(158°F)ontheHC-6100andHC-6300,or57°C(135°F)ontheHC-6500andHC-6700.Thedraincycle
is controlled by the user inputted values in the operation setup menu. Once the unit has timed out of the drain cycle and all of
the switches are still in position to generate steam, the water fill solenoid switch is activated to fill the tank and the cycle starts
over again.

17
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Maintenance
When90%ofthesettingservicetimehasaccumulated,the“STATE”LEDonthecontrolpanelwillblinkinyellow.(RefertoEOL
settings,forbedlifedurationsettings).IftheHumidiClean™isnotservicedatthistime;theunitwillcontinuetooperateforthe
remaining10%oftheservicelifesetting.When100%ofthebedlifesettinghasbeenreached,the“STATE” LED will be on in red.
The unit will drain the tank and not respond to a call for demand.
Note: Service Life can be adjusted based on water quality. If Ionic Beds are relatively free of scale deposits or scale is forming on
tank walls and elements because beds are saturated with scale, please consult the factory for Service Life adjustment procedures.
A. Servicing the Unit
1. Enter the SETUP menu
2. Scroll to Mode
a. Drain tank by changing from “STEAM” to “MANUAL DRAIN” in the Setup Menu.
b. Once the tank is drained, shut power off to unit and allow the tank to cool.
c. Remove the cabinet access panel and tank access panel, located on left side of humidifier.
3. Ionic Bed Inspection
Remove and inspect one of the ionic beds and inspect the drain screen at the bottom of the tank. If the bed does not
appeartobesaturatedwithmineraldeposit(afullbedwillweigh1.1kg(2.42lbs)dryandifthedrainscreenisclear,you
can reset the Ionic Bed life timer and either change that timer or leave it as it was. Continue on to Step 4.
 Ifthebedsaresaturated,removeallofthem.Removeanylargepiecesofscalefromthetank.SeePage18(Replacingthe
IonicBeds)forcompleteinstructions.
4. Cleaning the Unit
 a.ChemicallycleantheunitwithRite-Qwik.(Ifdesired.)
i.Pour3.75L(1gallon)ofRite-Qwikintotankfollowedby3.8L(1gallon)offreshwater.TheHC-6500/6700model
requires7.6L(2gallons)ofRite-Qwikand7.6L(2gallons)ofwater.
ii.Allowthesolutiontoworkuntilthebubblingactionceases,nottoexceed1hour.Whilewaitingyoucanproceed
with Steps b, c and d.
iii.Fillthetankwithwateranddrain.(Performthisstepseveraltimes.)
b. Clean the water level electrodes, using an emery cloth. See Page 20 for complete instructions.
c. Ensure drain lines are free of leaks and secure.
d. Check inlet screen on fill valve and remove any debris.
e. Install the new Ionic Beds once you flushed the tank out.
5. Restoring the Unit to Operation
a. Turn power on at breaker.
 b.Unitshouldbegintofill.Maximumfilltimeisapproximately30-45minutesbeforecontactor(s)willbeclosed.
c. Go into the Setup menu and verify that the unit is in “Steam Gen”.
6. Resetting the EOL Timer
a. Enter Setup menu.
b. Scroll to “Reset EOL?”.
c. Press enter to reset the EOL timer to 0 .
7. Modifying the Bed Life Setting
1. Complete the steps for servicing the unit as outlined above.
2. Change the EOL settings to desired value in Unit Status menu.
3. Save settings in menu.

18 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
End of Season Drain
If at any time during normal operation there is not a demand for a continuous 72 hour period, HumidiClean drains the
tank and the PC Board initiates a drying cycle by cycling the heating elements for short intervals in order to dry the
ionic beds.
Replacing the Ionic Beds
1. Enter the SETUP menu
2. Scroll to Mode Menu
a. Drain tank by operating menu from “STEAM GEN.” to “MANUAL DRAIN” position.
b. Once the tank is drained, shut power off to unit and allow the tank to cool.
c. Remove the cabinet access panels, and slowly open tank access panel.
3. Unsnap ionic beds from support pins and slide them out through the access opening.
4. Inspect tank drain screen and elements inside the tank. The elements should appear to be flaking off scale. If
the drain screen appears to building deposits in the screen holes it should be cleaned. Remove any scale that
appears in the bottom of the tank.
5.Installsix(6)newionicbeds(14fortheHC-6500/6700),snappingthemintoplaceonthesupportpins.
(Pinchendstosecure.)
6. Make sure access panel gasket is lapped over all edges of tank access opening. Replace and secure tank access
panel.
7.Makesurebothaccessdoors/panelsaresecure.
8.Turnonpoweratcircuitbreaker.
9. After the unit has heated up and started making steam, turn main power off and double check tank access panel
gasket for steam leakage. Hand tighten wing nuts or reposition gasket if necessary.

19
Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Figure 19-1 HC-6100/6300
Figure 19-2 HC-6500/6700
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20 Designs, materials, weights and performance ratings are approximate and subject to
change without notice. Visit armstronginternational.com for up-to-date information.
Cleaning the Water Level Electrodes
1. If there is water in the steam generating tank, operate the “SETUP”, “MODE” menu to “MANUAL DRAIN”. The
drain valve should energize, and the unit should completely drain.
2. After the tank has drained, turn off the main power at the disconnect.
3.Unclampandremovethe5/8”IDSiliconetubingfromthetopoutletofthelevelcanister.
4.Disconnectwires#21(highlevelprobe),#20(lowlevelprobe)and#19(commonprobe)fromtheprobes,
noting the probe and wire locations. Note: Level control float switches are used for DI, RO, or very pure
water. Cleaning should not typically be required.
5.Unscrewtheprobesfromthelevelcanisterusingthehexnutfittingontheprobe(Note:Levelcanisterbushings
mayberemovedwiththeprobes,ifnecessary).
6. Use a wire brush, wire wheel, or similar means to clean scale deposits off the stainless steel tip of the probe.
CleaningoftheTefloninsulatingjacket(whiteportion)shouldnotbeneeded.
7.Wipeprobeswithacleandrycloth.
8.Inspecttheinteriorofthelevelcanister.Iflargeamountsofscaleordebrisarepresent,removethecanister
fromthecabinetbyremovingthetwoclampingbracketscrewsanddisconnectingthe5/8”IDSiliconehoseat
the bottom of the canister. Flush the canister with water to remove debris and reinstall.
9.Reinstalltheprobesandprobewiresintheirproperlocations.Thehighwaterprobe(shortest)goesinthe
rightholeofthecanister.Thelowwaterprobe(mediumlength)goesintheleftfrontholeofthecanister.The
commonprobe(longest)goesintheleft,rearholeofthecanister.
10.Reconnectthe5/8”IDSiliconehose(s).
Low Level Electrode Probe
Electrode Level
Container
Common Electrode Probe
(No Reducing Bushing)
To Bottom of Tank
High Water Electrode Probe
Reducing Bushing
To Top of Tank