OWNER'S MANUAL
FOR BYPASS AND FAN POWERED HUMIDIFIERS
Includes Safety, Operating and Maintenance Instructions
Bypass and Fan Powered Humidifiers
Table of Contents
Page
Introduction .................................................. 1
Principleof Operation.......................................... 1
OperatingInstructions ......................................... 3
Effectof Water Characteristics ................................. 3
Annual Maintenance .......................................... 4
AnnualSummerShutdown ..................................... 4
PeriodicPreventativeMaintenance ............................. 4
Maintenance Instructions
Smalland LargeBypassHumidifiers........................... 5
FanPoweredHumidifiers .................................... 6
Introduction
Thankyoufor yourrecenthumidifierpurchase,We sincerelyappreciate your
businessand are pleasedto addyour nameto our growing list of customers.
Now,pleasetake afew minutesand readthis booklet.This will familiarizeyou
with the benefitsyouwill receivefrom the equipmentyoujust purchasedand
helpyou understandthe routinemaintenancethat will be required.
I. Prindple of Operation
Youhavepurchaseda humidifierthat operatesonthe evaporativeprinciple.
It will providethe properrelative humidity(seeoperatinginstructions)all during
the heating season.It isvery possiblethat youhavequestionsconcerningwhat
yournew humidifiercandofor you,andwhat you shoulddoto receive maximum
benefitsfromit.Thisbookletisintendedtoanswerthesequestions.
Thehumidifieroperatesinconjunctionwiththefurnaceblowermotor.When
thehumidistatcallsforhumidityandtheblowermotorisoperating,waterflows
tothedistributionpanlocatedatthetopoftheunit.Thewaterisuniformlydis-
tributedacrossthewidthofthepanandthroughascientificallydesignedsystem
ofoutlets.Itflowsbygravityovertheevaporativemedia.Dry,hotairismoved
throughthemoisture-ladenevaporativemediawhereevaporationtakesplace.
Thenow-humidifiedaircarriesmoistureinvaporformthroughoutthehome.
Thecorrectwaterflow isdeterminedbyanorifice ill eachunit.When
the unitisoperating,therewill hea small,steadystreamofwaterto drain,
whichflushesaway mostofthetrouble-causingminerals.Donot usethe
saddlevalveto regulatethe water flow. It is designedto be completelyopened
or closed.
Themineralsand solidresiduenottrapped bythe replaceableevaporative
mediaareflushed downthe drain.Thedrain alsoeliminatesthe problems
caused bystagnantwater. Thisisthe mosteffective and leastexpensive
methodto disposeoftrouble-causing minerals.
Trouble-freeperformanceandminimummaintenanceare assured bythe
designfeatures ofthe humidifier.All unithousingpartsthat comein contact
with water arenon-metal andwill neverrust or corrode.Neither heatnor water
will affectthem undernormaloperatingconditions.
The evaporativemedia,designed especially for uniform, high evapora-
tion, and the Scale Control Insert also efficiently trap mineral deposits which
are oftenthe cause of damageto working parts in ordinary humidifiers. No
"white dust" can bedistributedthroughoutthe living quarters.Theevaporative
mediamustbe in good condition to assure high capacity trouble-free perform-
ance. It shouldbe changedannually.
Thegranular coating inthe bottomof the distributiontray is designedto
provideequal distributionofwater to eachof the openingsassuringan even
flow ofwater overthe evaporativemedia.Donot cleanthe mineralscale off the
bottomofthe water distributiontray atthe end ofthe humidification season.
Thescale provides an excellenttrack for the water to follow.This is actually
what we try to simulatewith the syntheticcoatingin the bottomofthetray. If
the coating is removed,it is not necessaryto purchasea new distribution tray.
Youcan accomplish the same uniform performance by applyinga small
amountof liquid dishsoapoverthe entire lower surface ofthe water distribu-
tion tray.Thiswill allow thewater toflow evenlythrough each ofthe openings.
II. Operating Instructions
Yournew humidifieris controlled bya manualhumidistat,HumidiTracTM or
ThermidistatZM,installedeitherinthelivingareaor inthe coldairreturn.It is
importantto anticipatea drop in temperatureand reducethe setting according-
lyto avoidexcessivecondensation.Forexample,with an outsidetemperature
of 20° the correct settingwill be35%relativehumidity.Ifthe temperatureis
expectedto fall to 0° that evening,then reducethe settingto 25%severalhours
prior tothe temperaturechange.
OulsideTemperature
+40°
+30°
+20°
+10°
0o
-10 °
20o
RecommendedR.H.
45%
4O%
35%
30%
25%
20%
15%
Observanceof the recom-
mendedrelativehumiditylevel
on your humidistat (seetable)
is an important safeguard.
Condensationofwater on inside
windows in the form offogging
or frost is usuallyan indication
of excessive relative humidity.
The same condensation can
take place in other areas in
your homewith the possibility of resulting damage.
Besureto keepfireplace dampersclosedwhen not in use.Theyprovidean
excellentescape routefor heat, aswell as humidity.
Thehumidistat canbe usedto determinethe relativehumidityin yourhome
duringthe winter.Turnthe dialto the lower settingthen reversethe dial direc-
tion slowly untila "click" is heard.At this point,readthe relativehumidityonthe
dial.Thiswill bevery closeto the actual relative humidityin your home.
Tocheckthe humidifieroperation,set the humidistatabovethe click point,
makesurethat the water saddlevalveis openandthat there iselectricity tothe
unit.Thefurnace blowermotor mustbeoperatingfor the humidifierto function.
After the humidifierhasoperatedfor several minutesand water isenteringthe
unit and comingoutat the drain,reducethe humidistatsettingbelowthe click
pointandthe unitshouldautomaticallyshut off.Now,set the humidistatdial at
the recommendedinsiderelativehumidity,dependingonthe outsidetempera-
ture. Followthe suggestedsettings priorto a drop in the outsidetemperature.
III. Effect of Water Characteristics
Yourhumidifierwill operateeffectively usingeitherhard or mechanically
softenedwater.
Anytype of water (hard,soft, hot, or cold)is acceptablefor usewith the
drain-typehumidifiers. Hotsupplywater, 140° maximum,isrecommendedfor
all heat pumpapplications.Theuseof hotsupply water will alsoincreasethe
amountof humiditygeneratedinother applications.Theheatin the water
increasesevaporationandthe water goingto the drain is coldto the touch.
IV. Annual Maintenan(e
Forbestperformance,we recommendthatyoureplacetheevaporative
mediainyourhumidifierannually.
•Callthe installerof yourhumidifier.Thisinformationis oftenfound on your
equipment.
V. Annual Summer Shutdown
FORTHESUMMERHUMIDIFIERSHUTDOWN,SIMPLYTURNTHE
HUMIDISTATCONTROLTOTHE"OFF"SETTINGANDCLOSETHEDAMPER
IN THEBYPASSHUMIDIFIER.
Vl. Periodi( Preventative Maintenan(e
NOTE:Periodicinspectionand preventativemaintenanceofyourtotal heat-
ing systemisimportantfor efficient and safe operation.Yourdealer will include
humidifier serviceduring a maintenanceinspection.
Yourhumidifieris equippedwith an in-linewater strainer and orifice as
shown below.These partsshouldbe inspectedand cleanedperiodicallyto
assure continuedproper unit performance.
Inspection and Service Instructions
1. Disconnect electrical supply to furnace, install lock-out tag and shut off water supply.
2. Disconnect the water line at the inlet fitting,
3. Remove the inqine strainer from inside the inlet fitting
by using a smallnail or wire,
4. Flushthe in-line strainer to clean it If it is neoBssafyto
replace the strainer contact your dealer for a replacement
5. Disconnect the water line at the outlet fitting.
6. Remove the orifice from the copper or plastic tube
and make sure this small opening isunplugged.
7. Replace the orifice and reconnect the outlet water line
(double wrench to prevent leaking and valve breakage).
8. Replace the in-line strainer and reconnect the inlet
water line (double wrench to prevent leaking and
valve breakage).
9. Turn on water supply and reconnect electrical power to the furrrace.
I!
OUTLET
COMPRESS}ON
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ORIFICE
OUTLET . Jim
Fl]q3 NG _
SOLENOID /
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; i _INLET
IN-LJN E _/£t
STRAINEA _ iNLET
COMPNESSlON
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,,,,,
1. Front Cover
2. Feed Tube
3. Nozzle
4. Water PanekEveporetive
Assembly
I 5. Distribution Tray
S 6. "V" Notches
7. Water Panel
8. Scale Control Insert
9. Drain Hose
CAUTION!Suddenoperationmay causepersonalinjuryorpropertydamage.
Turnhamidistatto "OFF"beforeservicing.
1. Notehumidistat setting and turn humidistatto the "OFF"position.
2. Atthe sideofthe unit oppositethe airflow duct, pullfront cover (1)off holdingwith bothhands
and set aside.
3. Carefullypull the plastic feedtube (2)out ofthe nozzle(3)atthe topof theWater Panelevapo-
rative assembly (4).Pullthis assemblyout by grasping attop andtipping out.
4. Slide the evaporative media (4)outfrom the white plastic Scale Control Insert (5).Cleanthe
insert frame bytwisting andflexing it to loosen the calcium deposits, or use aputty knife.
Replace the evaporative media(Part No. P110-1045for Small BypassHumidifier and Part No.
P110-3545for Large BypassHumidifier)and slide the pad back into thescale control insert
frame with color mark up.Snapthe black distributiontray (2)back into place.
5. Reinstallthe Water Panelevaporative assemblyinto the unit byfitting its drain tube into the
round receptacle atthe baseof the unit. Pushthe assembly in atthe top against the beveled
tabs that will hold it in place. Pushthe endof the feed tube backfirmly into the nozzleand
replace the front cover.
6. Removethe drainhose (6)from the bottom ofthe unit and bendand flexit to loosen the
internal calcium deposits.Then flush it with water under pressure and slip it back onto the
black drainfitting.
7. Resetthe humidistatand check unit operation.
1. Front Cover
2. Base
3. Evaporative Assembly
4. Distribution Tray
5. "V" Notcbes
6. Evaporative Media
7. Scale Control Insert
8. Drain Hose
9. Power Cord
WARNING!120VOLTSmay causeseriousinjuryfromelectricalshock. Disconnect
powerandshutoffwatersupplybeforeservicing.
1. Notehumidistatsetting andturn humidistattothe "OFF"position.
2. Disconnect electrical power andturn offwater supply.
3. Unlatch humidifier cover assembly(1)from baseassembly (2)atthe bottom ofthe cover,lift,
and set aside.
4. Pulloutthe evaporative assembly(3)by graspingatthe top andtipping out.
5. Removethe blackdistributiontray(4)fromthe evaporativeassemblybyunsnappingthe white
plastic endsofthe Scale Control Insert (7),fromthe tabs atthe endofthetray. Lightlyscrape
any calcium depositsout ofthe "V" notches(5),but do notscrapethe granularcoatingfrom
the bottomof thetray.Thistextured surface helps ensure evenwaterflow for maximumper-
formance. Ifthe granular coating hasbeen removed,place several drops of liquiddishsoap
onthe distribution tray and cleanthoroughly This will only needto be done once.
6. Slide the evaporativemedia(6)out fromthe white plasticScale Control Insert(7).Cleanthe
insertframe bytwisting andflexing itto loosenthe calcium depositsor usea putty knife.
Replacethe evaporative media (Part No.P110-3545)back intothe Scale Control Insertwith
the colored spot up andsnap the black distribution tray (4) backintoplace.
7. Reinstalltheevaporativeassembly(3)intothe baseassembly(2),Pushthe evaporativeassembly
(3)in atthe top between the retaining ribs that holdthe assemblyin placein avertical position.
8. Removethe drain hose(8)from the bottom ofthe unit. Bendand flex itto loosenthe internal
calcium deposits.Thenflush it with water underpressure and slip it backonto the drain fitting.
9. Reinstallcover assembly(1)by hookingatthetop ofbaseassembly(2)andlatchingatthe bottom.
10. Reconnect electrical power (9)and turn onwater supply.
11. Resetthe humidistatand check unit operation.
© 2OO2CAC/BDP
R0. Box 70,Indianapolis, IN 46206
DP#10005591 12.20.00 Form: OG-HUM-01
504.250M Catalog: 63HU-M02
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