Sears 2500 User Manual

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Page 1

Kenmore 2500

15 GALLON

CENTRAL HUMIDIFIER

Installation Maintenance

Repair Parts

Troubleshooting

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

Page 2

contents

WARRANTY ........................................... 2

BEFORE YOU START

Rules for Safe Installation

and Operation ................................... 2

Tools and Materials Needed .................. 2

introduction

Please read the instructions before you install and use your humidifier.This will help you obtain the full value from the humidifier. It will also help you avoid any needless service cost, ifthe problem is something we cannot control and cannot cover in our Warranty.

FULL ONE YEAR WARRANTY ON HUMIDIFIER

If, within one year from the date of purchase, this humidifier falls due to a defect In material or workmanship, Sears will repair It, free of charge.

WARRANTY SERVICE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS STORE OR SERVICE CENTER IN THE UNITED STATES.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. This warranty DOES NOT cover the replacement media pad.

Seam, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179

DO-IT-YOURSELF CHECK LIST

Ifyoufeel the following operations are withinyourskills,you should

have no difficulty installing this humidifier.

[] Cutting and ddlling sheet metal. [] Using hand tools: screwdriver, wrench, etc. [] Hooking up low voltage electdcal connections.

UNDERSTANDING HUMIDITY .............. 3

SELECTING A LOCATION ..................... 4

INSTALLATION ...................................... 4

DISASSEMBLY ...................................... 4

WATER SUPPLY ................................... 6

Youmustrealizethat the wrong useof any toolcan be danger- ous. Be sureyou knowhow to use the toolsand equipmentto avoidany possiblehazards.If you haveany doubtwe ask that youcontactyourSearssalesperson.They willarrangeforprofes-

sionalinstallation.

HUMIDISTAT.......................................... 8

OPERATI_)N .......................................... 9 _

MAINTENANCE..................................... 9

SERVICE HINTS .................................. 10

REPAIR PARTS .................................... 11

SEARS INSTALLATION POLICY AllinstallationlaborarrangedbySearswillbeperformedinaneat,

workmanlikemannerinaccordancewithgenerallyacceptedtrade practices.Further,all installationswillcomplywithall local laws,

codes, regulations,and ordinances.The customerwillalso be protected,dudnginstallation,by insurancerelatingto property

damage,Workman'sCompensation,and publicliability.

before you start

RULES FOR SAFE INSTALLATION & OPERATION

1. Read these rules and the instructions carefully. Failure to fol-

low the rules and instructions could cause bodily injury and/ or property damage.

2. Check your local building codes and utility standards. The installation must comply with their rules.

3. Always shut offthe furnace blower before installing or servic-

ing the humidifier.

4. Always wear safety glasses when installing or servicing.

5. HUMIDIFIER MUST NOT BE INSTALLED IN AREAWHERE FREEZING IS POSSIBLE OR LEAKING WOULD CAUSE

WATER DAMAGE.

6. Follow a regular service and maintenance schedule.

7. Always shut off electricity and water to the humidifier before servicing.

8. When the furnace blower is used for air-conditioning, the hu- midifier damper should be closed, and the humidistat should

be turned to the minimum humidity setting.

9. NEVER OILANY PARTOFTHE HUMIDIFIER.

SEARS INSTALLATION WARRANTY In additionto any warrantyextendedto you on the Sears mer-

chandiseinvolved,whichwarrantybecomes effectivethe date themerchandiseisinstalled,shouldtheworkmanshipofanySears arrangedinstallationprovefaultywithinoneyear,Searswill,upon

noticefrom you, cause suchfaults to be correctedat no addi- tionalcast toyou.

10. Topreventoverhumidification,humidifiermustnotbe oper-

ated above humidistat high position or above the +20 position (whichever applies) except briefly to test op-

eration after installation or servicing.

TOOLS AND MATERIALS NEEDED

• Safety Glasses

• Straight edge ruler

• Pencil or grease pencil

• Hand ddll or grounded

electric drill

• Ddll bits, 5/32", 1/8"

• Tin snips or metal

cutting saw

• Screwdriver (flat point,

medium size)

• File

Level

• Hammer

• Small adjustable wrench

• Center punch

Page 3

THANK YOU! ....

Thankyouforselecting a Sears Humidifier.Itwillprovideyearsofsarvlca ffyougiveita littlecare.

UNDERSTANDING HUMIDITY

Humiditycan be puzzling. It cannot be seen, heard, touched,

smelledortasted. Many peopledo notunderstandwhata humidi- fier willor will notdo.

Probablythe best way tojudge whetherthe humidityistoo high,

too loworaboutdghtistowatch yourwindows.Ifthey are heavily fogged you mostlikely have too much.Ifthere is no moistureon

TYPICAL QUESTIONS ASKED

themat all, especiallyin the comers, you have too little.(NOTE:

Moisturewill notnormallyformon thermopaneorwhenstormwin- dowsare used.) If there is some moisture inthe windowcomers

andalongthe edges,the humidityis Justaboutright.This isa good rule of thumb, if you do not have an expensive piece of testing

equipment.Yourcomfort isanothergoodcheck.

1. Why do moisture requirements vary from home to home? Requirements depend on the amount and dryness of air to be

humidified. The larger and more loosely constructed the home, the greater the quantity of moisture required.

2. How can I best check my home's relative humidity?

Firstgive your humidifiertime to build up the humidityto an

acceptablelevel. Instrumentsareavailabletomeasurerelative

humidity,but from a practicalstandpoint,yourcomfortis the bestguide.Youcannotdependon table top or wall hungdial gauges.

3. How long will It take my humidifier to build up the

humidity In my home? Much depends on the outside temperature, time of year, home

construction, and how dded outthe home has become. In some cases, it may take a week or more.

4. What are some of the common things that cause higher than average air leakage In the home, therefore causing

low humidity? A. Jalousie windows

B. Open fireplace dampers C. Cracks around windows and doors

D. Open doors and windows

E. Unusually large attic or foundation vents F. Range hoods and bath fans

5. What else causes static shock besides low humidity?

Some types of carpets tend to create more static than others. While the proper humidity level will reduce the static level, it may not eliminate static entirely.

6. What Is the safe humidity level for my home?

In ordertodeterminethe safe relativehumidityfor homesex- posedtovadouslowoutsidetemperatures,NESCA*conducted

tests and publishedrecommendedhumiditylevelsfor various

outdoortemperatures.These are shown in the chart.These levelshelppreventdamageto your home suchas water run-

ningdownthewallsor even buildingupinsidethewalls.

The safe indoor relative humidity percentage isnot a fixed num-

ber but will increase or decrease as the outdoor temperatures

dse or fall.

Outside Temperatures Maximum Safe Recommended

Indoor Relative Humidity

-10 ° F 20% 0o F 25%

10° F 30% 20° F 35% 30 ° F 35%

"NESCA = National Environmental Systems Contractors Association,

Page 4

selecting a location

Consider these points as you choose the location for your hu- midifier.

Locate humidifieron supplyair plenum(Fig. 1) or return air plenum.If the humidifieris installedonthe returnair plenum, theflexiblehose,roundopening,isconnectedtothe supplyair plenum.

If furnaceisequippedwithair conditioning,humidifiershould be mountedaboveorat slopesideof"A"coiltoavoidpossible splashing(Fig. 2) ofwaterin reservoir.

Humidifier should be installed so that if the humidifier or any other connections should leak, the resulting flow of water will

notcause damage. Under no condition isSears and the manu-

facturer to be held liable for any water damage in connection

withthis humidifier. Never install humidifierin atticor crawl space where freezing may occur or leaking will cause water damage.

if holes between supply air plenum and return air plenum must be located more than 36 inches apart (Fig. 1), standard 6 inch

round pipe and fittings (not supplied) may be used, or an 8 foot section of flexible tube No. 281152-05 may be purchased

through the Soars parts department. Materials needed for this type installation are available at Sears.

11inchminimum

36 inchmaximum usingflex

hoseprovided*

• Purchaseaddttlc_laJ hosefor greaterspans,

Return Air Plenum

PlaceHumidifier

SupplyAi

Plenum

AirConditionerCoil

Plenum

_otachrmto

Duct

inspection

This humidifier is assembled withthe bypass duct on the left

side (Fig. 3).This issuitable for installation as shown in Fig. 1. If this is suitable for your installation, remove parts as shown

under Disassembly. Skip conversion steps A, B, and C. Start

your installation with Step 1, Page 5.

Ifyourequirethe motoronthe leftside(Fig.4), removeparts underDisassembly,andstartwith=A:'

SAFETY GLASSES SHOULD BE WORN TO PREVENT EYE INJURY WHEN INSTALLING HUMIDIFIER.

disassembly

• Take off front panel by sliding panel up and pulling out at the bottom.

• Remove media wheel and reservoir by sliding reservoir straight out toward you while raising latch on right hand side.

EE;I[t_€!

AS SHIPPED (lefthandflange)

By-PassFlange

la[C_l.'3

Motor Side

ASCONVERTED (righthand flange)

By-Pass Flange

Motor Side

• Lift media wheel out of reservoir by flexing wire support

outward to release shaft.

conversion (if required, see "Inspection" above)

[] A From inside pull motorbracket up by top flange (Fig. 5).

TopFlangeof MotorBracket

(PullUp to

Remove)

Page 5

[] 1Mark a levellineon plenum.Holdstiffeneragainst the ple-

numwithbottomedgeonlevelline andflangestowardyou.Mark the locationof ell holes Includinglarge rectangularopeningin

centeron plenum(Fig.8).

[] 2 Drillor puncha largeholein one cornerof rectangle. Thiswillallowyouto insertthetin snipsor metal saw.

CAUTION: BE SURE NOTTO DRILL OR CUT INTO AIR CONDITIONING COIL OR TUBING.

Electric Disconnect

[] B Install motor bracket on left side. Make sure bracket is

firmly seated(Fig. 6).

Media

Wheel

k._ SmallDiameter

Large_ PositionMedia

Diameter WheelShaft

Wire UnderDimples

Support ByFlexing

Wire Support.

Outward.

lltqm

Drill(5)

118"Holes_

Mounting

Tabs

<-- - Stiffener

Cut Along

This Line

Hole"A"-- ,_•

I Furnace

[]

are rough, file them smooth.

[]

1/8" drill bit.

[] 5 Mountthe stiffenerwith the flangestowardyou using the four cornermountingholes.Do not useHole "A". Make sure

stiffenerisflush withthe plenum.Seal aroundedgewithcaulking

if necessary(Fig.8).

Cut out the area inside the rectangle. If any ofthe edges

HI" Drill the remaining holes marked on the plenum with a

Cut Out

This Area - Level

Line

Supply

Air

Plenum

[] C Removemediawheel wire supportsfromreservoir.In- sertlargediameterwiresupportonleft sideof reservoirandsmall

diameterwiresupportonrightsideofreservoir.Place mediawheel inwire supportswithgear onleftside of reservoir.(Flexwire sup-

portoutwardto capturemediawheelshaftunderdimples.)Fig.7.

Unit is now converted to a left side motor.

installation (onsheet metal plenum duct)

NOTE: Figures 8 & 9 show humidifier installation on supply air plenum for illustration purposes only. If more convienient,

humidifiermay be mounted on return air plenum. Ifhumidifier is installedon the return air plenum, the flexible hose (round collar

opening) is connected to the supply air plenum.

FIBER PLENUM DUCTS

NOTE: The mounting screws supplied are for standard installa-

tionon _ plenumducts.Ifyou have fiber plenum ducts,

installthe humidifierand components with thru-bolts,nuts, and washers (not supplied). If necessary, reinforce the humidifier mountingarea on fiber ducts with sheet metal and provide addi- tional bracing as required to supportthe weight ofthe humidifier and water. (This fiber duct installation hardware is not supplied and must be pumhased from your local hardware store.)

[]

U Hang the humidifier case on the mounting tabs. The

tabs may have to be bent out slightly to mount the case. Secure the case to the stiffener with a sheet metal screw in hole "A".

case isnot attached with the screw, it could be dropped and

I NOTE: It is very important that the case is secured. If the I

damaged during routine maintenance.

[] 7 Position collar at selected location. Mark center open-

ing and (5) holes. Cut out center opening and drill (5) 1/8" holes.

Hot Air

Plenum

ReturnAir

Plenum

Collar

Location

Furnace

Page 6

[] 8 Attachcollarand flexiblehoseto plenum.If additional flexiblehoseisrequired,an eightfoot lengthisavailablethrough

thepartsdepartment,order281152-05. Beforetightening screws, insertdamperbetweencollarand plenum(Fig. 10). Itshouldbe openfor humidifieroperation.

Damper Blade beSlideshut

fore using air

Slide open at start of heating season.)

conditioning.

9 Connect the flexible hose as shown using clamp pro-

vided. Do notallow flexible tube to come within 3" of furnace flue pipe because of flue pipes extreme heat. If hose is under stress (pulling), it may be necessary to drill 2 holes in humidifier collar for screws. This will prevent clamp from slipping off (Fig. 11).

installation

WATER SUPPLY

[] 1 Water for the humidifier must be taken from a nearby

cold water line. Turn off the water supply. Drain by opening a fau-

cet at a lower level of the line.

[] 2 Position the saddle valve on the water line as close to

the humidifier as possible.You have been supplied with 10 feet of

1/4" plastic tubing.

SPECIAL NOTE: When measuring the distance from the saddle valve location to the humidifier, keep in mind that the

tubingmust be supported;therefore, it must runalong ceiling J

J and walls. Measure along the path the tubing will follow. I

[] 3 Back out the piercing pin by turning the _ handle

counter clockwise and then clamp the saddle valve body securely

on the water line with rubber gasket positioned as shown (Fig.

13). On galvanized or copper pipe over 5/8", first ddll a 5/32' hole.

[ CAUTION: Forsafety,use a hand drillor groundedelectricdrill. ,J

Screws(2)

InCollar

[] 10 It Is best to install an overflow line. Local codes may

require overflow protection. The overflow is in the bottom of the humidifier reservoir (Fig. 12). Use 1/2" inside diameter rubber or

plastic tubing to connect to nearby floor drain. (Tubing not sup- plied. Overflow tubing is available at your local hardware store.)

[] 4 Turnhandleclockwiseuntil it has piercedthe water

lineandvalveiscompletely closed (Fig. 13).

[] 5 Partially uncoil the tubing. Slide the brass compres- sion nut over the tubing. The threads in the nut must face the tubing end. Place the brass compression sleeve as shown in Fig.

13. Slip brass insert intoend of tubing.

[] 6 Insert the tubing end into the saddle valve at threaded

stem "A" (Fig. 13) as far as it will go.Thraad the brass compres- sion nut onto the valve, then tighten gently with a wrench. Take care not to overtighten the nut.

BrassCompressionSleeve

=::O/ BrassInsert

Brass

Compression Nut

_ Overflow Drai_

[] 11 Installmedia wheel and reservoir trayin humidifiercase

and engage latch on right hand side to valve body inlet stem.

Water Pipe

UAU

Rubber Gasket

(Stem Up)

MOUNTING SADDLE VALVE

Page 7

[] 7 Unwind the rest of the tubing. Take care not to kink it.

Run the tubing along flat surfaces to the humidifier. Support the

tubing as needed to avoid contact with furnace.

[] 8 Close previously opened faucet. Turn on main water supply. Place a pall under the and of the tubing. Open the caddie

valve, Flush the line. Make sure there are no leaks along the line or at the valve. Turn valve off.

[] 9 Removethe quickdisconnectsocket,brasscompres-

sionnut,andbrasssleevefromhardwarebag(Rg. 14). Withwater supplytubingcutto the properlength,slidethebrass compres- sionnutandsleeve overthe tubingas describedinStep 5, Page

6. Slipbrass insertintothe endoftubing.

Nut

QUICK DISCONNECT

ASSEMBLY

Sleeve

Insert

II[l_lill

-I Sleeve

L _Humiditier

Quick Disconnect

Socket

1/4" Plastic

Water Supply

Tubing

[] 10 Insertthetubingend intothe quick disconnectsocket

as far asitwillgoand holditthere, threadthebrasscompression nut onto the quickdisconnectsocket, then tighten using two

wrenches,onetoholdquick disconnectsocketandoneto tighten nut.DO NOT over tighten nut.

[] 11 Connectthe quickdisconnectsockettotheplugonthe

valvebody(Fig. 16). To connect, pull back sleeve, pushsocket onto plug, release

sleeve. To disconnect,pullback sleeve,unlockingquickdisconnectand

sealingwater supplyline,separatefrom plug.

LI1[t]! i1,1

[] 12 Turnonwatersupplyatsaddlavalva.Chackwaterlevel.

Water should be 3/8" belowtop of overflowcompartmentwall

(Fig.17).Ifadjustmentisnecessary,disconnectwatersupplytub-

ing,andremovefloat assembly(Fig.18). See instructionsonbot- tom of float.To raisewater level,turn float clockwise.To lower

waterlevel,turnfloatcounterclockwise.

Float

Valve Button

Valve

Body

Float Pin

[] 13 Attach front panel. Be sure lip at bottom of front panel

is inside lip at front edge of humidifier case.

Disconnect Plug

Page 8

installation

HUMIDISTAT

The humidistatis designedto _ount on the coldair plenumof yourfurnaceor onan interiorwallof the home.The coldair ple-

num,howeveris thepreferredlocationfor sensingthe average humiditythroughoutyourhome. Select your location and follow theappropriateinstructions.

I OTE: THE HUMIDISTATAS SUPPLIED IS ASSEMBLEDFOR COLD AIR PLENUM INSTALLATION(FIG. 20).

On ColdAir

Plenum

Minimum

_,Air Flow I

"" _ -- "" _ Fumaca

I I

HotAir

Plenum

cold air plenum mount (no.20)

[] 1 Select a locationthat is a minimumof 6" upstream

on cold air plenum (Fig. 19). Peel off paper backing and posi-

tion template supplied,drill four 1/8" diameter holes and cut out center portionalong solid line. Peel off backing and apply

gasketmatedalas indicatedbydashedlines.

I CAUTION: DONOT install humidistat on hot air plenum. I

[] 2 Remove knob and cover from humidistat. To remove

cover, place screwdriver blade in slotat side of humidistat and twist.

[] 3 Position humidistat in opening and fasten with four

screws provided.

[] 4 Installshaft extension.Installcoverby snappingonto

backplate. Press knobonto shaft extension.

5 Connect wiring (Fig. 21)_ Plug 24 VAC transformer

into 120 VAC outlet. Do not use existing transformer on furnace.

6 Peel off backing and attach the operating instruc-

tion label to the cold air plenum next to the humidistat.

wall mount (Fig.22)

Knob

Humidifier

Apply Gasket Here Around Opening

,Return Air

Plenum

Opening

DUCT MOUNT

Humid

Electdcal

Disconnect

120 VAC Wall Outlet

[] 1 Remove knobend coverfrom humidistat.To remove

cover,placescrewdriverbladeinslotatsideof humidistatandtwist.

2 Convert humidistat for wall mounting by removing

control unit from backplate. Reassemble control unit to backplate as illustrated in Pig. 22 with spacers to rear and shaft forward. Remove electrical disconnect by cutting the (2) wires.

Strip ends 1/2" for splicing to wall wire.

I NOTE: Shaft extension is not required forwall mounting, I

3 Select a location on a convenient inside wall, usu-

ally beside your furnace thermostat.

[] 4 Run low voltage wire through the wall, Exit hole must

be within the lower backplate opening. (Purchase additional wire as required.)

[] 5 Connect low voltage wires from wall to previously cut leads on humidistat by stripping ends and using wire nuts

(not provided). Position and fasten humidistat to wall with four screws provided. Install cover by snapping onto backplate.

Press knob onto humidistat shaft. Make sure 1/8" air space is maintained between wall and backplate to allow air circulation and humidity sensing.

6 Connect wiring (Fig. 21). Remove electrical discon-

nect by cutting wires on harness, strip ends and splice to low voltage wire from wall humidistat using wire nuts. (Wire nuts

not provided. Purchase them from your local Sears Hardware Store.) Plug 24 VAC transformer into 120 VAC outlet. Do not

use existing transformer on furnace.

Media _ willtum wheneverhumidistatcallsfor humidity. J

I NOTE: Humidifierhumidifiesonlywhen fumaco is on, however,

Page 9

Mounting,

Screws

(4)

Hole In Wall

Mounting

Screws

I-<--Spacers

AIR CONDITIONING - IMPORTANT:

If your furnace has air conditioning (cooling), close the damper

completely during summer months and turn the humidistat to the Minimum Humidity setting. BE SURE TO OPEN DAMPER

DURING HEATING SEASON.

CAUTION:

Do not use tablets in an attempt to control lime de- posits in this humidifie!! Use of tablets may cause humidifier to splash causing damage to humidifier

or furnace.

Control

Unit

Wall Mount

NOTE: By turning knob to the test position humidifier should start. (Do not leave on test.) Ifthe installation is being made in the summer or when the humidity is high, turn knob to the test

position and the humidifier should start. When your system is working satisfactorily, turn knob back to the minimum humidity

setting until winter.

maintenance

CLEANING AND SERVICE INSTRUCTIONS:

This humidifier is an appliance which works with water. The

dissolved minerals normally found in tap water are left as lime deposits in the humidifier. REGULAR CLEANING is necessary to keep the parts free of lime deposits. Deposit build-up will

reduce humidifier output. Ease of servicing has been foremost in the design of this humidifier. Service at least every (4) four

weeks during the heating season or more often depend-

ing on the water conditions.

operation

1 Set knob to the lowest temperature predicted for a

24-hour period. Because of differences in house construction you may want to try a higher or lower setting to achieve proper

humidity.

2 Change knob settings as outdoor temperature changes

Occur.

DO NOT LEAVE KNOB SET ABOVE "+20" OR HUMIDI-

FIER WILL RUN CONSTANTLY AND MAY OVER HU-

J WARNING:

MIDIFYYOUR HOME.

IF SWEATING OF WINDOWS OR WALLS

OCCURS OR IF AIR ISTOO DRY: Check dial setting, Indicator should point to the lowest 24-hour

temperature, If setting does not agree, readjust knob to proper number and wait 24-hours for sweating to stop, If dial setting 9, was correct and conditions have not changed, rotate knob back

and forth from TEST to MINIMUM HUMIDITY SETTING. If hu- midifier goes ON and OFF, control is operating properly. 10.

SPLASH INSIDE HUMIDIFIER:

This humidifier depends on the difference of air pressure between

the supply air plenum and the return air plenum to propel air through the humidifier. Some furnaces have higher pressures than others. This could result in air travelling at high speed through the humidifier.This can cause droplets of water to be picked up and splashed against the inside of the humidifier case. Eventu- ally a coating of lime will build up. It could in extreme cases, cause leaking of water from the humidifier. If possible, operate the fur-

nace blower at a lower speed.

TO REDUCE SPLASH:

Partially close the damper located in the collar on the return air plenum. Some experimenting may be necessary to find the proper setting.

11.

Turn humidistat to minimum humidity setting.

Disconnect water supply at the humidifier using the quick dis-

connect. The water is automatically shut off.

Remove the front panel of the humidifier, remove drain line (if used) and slide out reservoir and media wheel while raising

latch on right hand side.

Lift out the media wheel by flexing wire support outward to release shaft.

Pull out stainless steel pivot pin and remove float and float

arm.

Pour contents of reservoir down the drain.

Lift out the reservoir liner and replace, (Part No.215711-01),

or clean.

Clean lime from all parts using a solution of vinegar and wa- ter, detergent and water, or Sears All-Purpose Humidifier Cleaner (Stock No. 42-14713).

Remove media pad from inside ofwheel and clean thoroughly, replace if necessary (Sears Stock No. 42-9335). IMPORTANT:

Stretch media lengthwise before placing in wheel

Ifthe Reservoir has been overflowing, the Float Valve Button

may be worn. In normal operation this button will erode even- tually much like a faucet washer. Remove the Float Valve

Button, turn it over and reinsert or replace after both surfaces

are worn (Fig. 23). Replacement buttons are available at Sears.

Reassemble unit (flex wire support outward to capture media

wheel shaft under dimples), connect water supply and drain line (if used), and turn humidistat to desired setting. Unit is

back in operation.

NOTE: Make sure latch on right hand side is engaged to

float valve body inlet stem. This prevents reservoir move-

ment and possible disengagement of media wheel gears

during operation.

Page 10

reminder,you may want to puta tag or stickeron the unit indi- cating it has been shut downfor the summer and will require

start up inthe fall.)

FALL START UP:

Body

Plugin transformer,open saddle valve, open bypass damper

and sat humidistatto TEST position.Check for proper water level and media wheel operation. Set humidistataccordingto

outdoortemperatureas instructedon label.

SERVICING THE FLOAT

*Reveme buttonif it

hasnotbeen used. Replacewithnew

buttonifbothsides are worn.

SUMMER SHUT DOWN: Unplugtransformer,close saddlevalve, closebypassdamper.

CLEAN PER ABOVEAND LEAVE RESERVOIR EMPTY. (Asa

If the humidifier has been overflowing, the float valve button may be worn. This button will wear much like a faucet washer.

To service:

1. Disengage quick disconnect.

2. Remove float from humidifier (pull out pivot pin).

3. Service float as shown in illustration at left.

4. Reinstall and test float.

service hints

Frequently what seems to be a major problem can be solved very easily. Listed below are the common concerns with any humidifier. Check the simple things first. Remove the front panel and see if there is a crusty,white lime build-up on the media pad. The lime build-

up won't hurt the humidifier, but will reduce its output. Low output might just mean your humidifier needs cleaning. While you're chocking for lime build-up, look to see if the media wheel is turning. If not, check the power supply.

CONDITION WHAT TO CHECK WHAT TO DO

Too little

Humidity

Too much Humidity

Humidifier 1. Is humidifier level? Overflows 2. Float valve.

1. Does humidifierneed cleaning.

2. Ismediawheel rotating?

3. Hun_idistatsetting.

4. Water tounit.

5. Excessive air loss in house.

6. Is water level correct?

7. Is damper open?

1. Humidistat setting.

2. Other humidification sources.

3. Air flow too high.

1. Clean humidifier and clean or replace media pad

and reservoir liner.

2. a. Clean or replace media pad. b. Check to see if transformer is properly plugged in.

c. Inspect main fuse or circuit breaker. d. Check to see if media motor is rotating.

e. Humidistat setting too low, turn knob clockwise

to increase humidity.

3. Set for proper outdoor temperature - lowest 24-hour

temperature.

4. Turn on saddle valve and check for possible

obstruction in water line. Is water supply connected?

5. Close fireplace damper, seal around doors and

windows.

6. Adjust float.

7. Slide damper out for winter operation.

1. Turn knob counterclockwise to decrease humidity.

2. May be a temporary condition caused by moisture

from laundering, bathing, cooking, etc.

1. Level unit.

2. Service as shown in Fig. 23.

3. Adjust damper.

Humidifier 1. Mounting or plenum. Making Noise 2. Water pressure.

HumidifierMotor Comes On When Furnace Isn't

3. Media Wheel.

This is a normal condition

1. If heating season is over.

2. If heating season isjust starting.

Running

1. Tighten all fasteners.

2. A slight sound is normal as water enters humidifier.

3. Check clearance of media wheel in reservoir.

1. Turn knob on humidistat to minimum setting.

2. This is a normal condition since humidistat is controlling humidifier.

Page 11

repair parts

KENMORE "2500" CENTRAL HUMIDIFIER

MODEL NO. 303.936613

KEY PART KEY PART

NO. NO. DESCRIPTION NO, NO. DESCRIPTION

1 21571501

2 35586401

3 05301101

4 21571601 5 STD575026 6 STD575025 7 35561801

8 21582703

9 43148901 10 43149102 11 21581001 12 21571101 13 21571901 14 21570901 15 21575001 16 35577002 17 03022815 18 35561102

19 42063901

THIS IS A PARTS LIST, NOT

Plenum Stiffener Upper Case

Lower Case

(Includes Key Nos. 33 & 34)

Motor and Bracket Brass Compression Sleeve 1/4"

Brass Compression Nut 1/4" Saddle Valve

(Includes Key Nos. 5 & 6)

Plastic Supply Tubing (1/4" x 10') Damper

Collar and Flexible Tube (3")

Tube Clamp

Reservoir (Water Tray) Liner Support Bracket (Gear)

Media Wheel with Gear Media Clip (3 Req.)

Media Pad (42-9335) Slinger Washer

Float Valve

(Includes Key Nos. 19-24)

Float

A PACKING LIST.

20 22513801 21 28110101

22 28110201

23 21569101 24 03029401 25 21572601 26 21571001 27 21571202 28 21572701 29 21586101 30 03022701 31 STD610603 32 41067501 33 05299101 34 05299201

STD610803 21584001

35587301 35575901 21596001

Float Arm Float Valve Button

Pivot Pin

Valve Body

Locknut

Support Bracket (Shaft)

Reservoir (Water Tray) Front Panel

Plug Quick Disconnect

Socket/Quick Disconnect

U Type Speed Nut (4 Req.)

Type B Screw (#6 x 3/8") (4 Req.)

Brass Insert (2 Req.) Push Rivet

Latch, Reservoir Lock

Screw (#8 x 3/8") (10 Req.)

Low Voltage Wire (10 ft.) Humidistat (24V)

Transformer (24V) Owners Manual

*Not Shown

Page 12

Kenmore 303.93661 FURNACE HUMIDIFIER MAINTENANCE

(APPLY THIS LABEL WHERE EASILY SEEN)

Cleaning frequency is dependent upon mineral content of water supply.

Check every other week until schedule can be determined.

1. Turn humidistat to "minimum setting."

2. Disconnect water at humidifier using quick disconnect.

3. Remove front panel, remove overflow tubing (if used), slide out reservoir and media wheel assembly while raising latch on right hand side.

4. Lift out media wheel by flexing wire support outward to release shaft.

5. Pull out pivot pin, remove float and arm.

6. Empty water from reservoir.

7. Lift out reservoir liner and replace (part number 215711-01), or clean.

8. Clean residue and lime build-up from all parts using a solution of vinegar and water, detergent and water, or Sears All-Purpose Humidifier Cleaner (stock number 42-14713).

9. Remove media pad from wheel and clean thoroughly; replace pad if necessary - available from Sears (stock number 42-9335).

IMPORTANT: Stretch new pad lengthwise before placing in wheel.

10. If the reservoir has been overflowing the float valve button may be worn. Remove float valve button, turn over and reinsert or replace if both surfaces are worn. (Part Number 281101-01)

11. Reassemble parts in reservoir (Flex wire support outward to capture media wheel shaft under

dimples) and slide back into humidifier. Engage latch on right hand side with float valve stem.

12. Attach water supply quick connect, attach overflow tubing (if used), and allow reservoir to fill.

13. Check water level and adjust float if required.

14. Turn humidistat to "test" momentarily and check for media wheel rotation. Reset humidistat

according to outdoor temperature as instructed on label and reinstall front cover. Unit is back in operation.

Summer Shutdown Unplug transformer, close saddle valve, close bypass damper. Clean per above and leave

reservoir empty. (Asa reminder you may want to put a tag or sticker on the unit indicating it has

been shutdown and will require startup in the fall.)

Fall Startup Plug in transformer, open saddle valve, open bypass damper and set humidistat to "test". Check for

proper water level and media wheel operation. Reset humidistat according to the outdoor temperature as instructed on label. Unit is back in operation.

PIN 21604001R10-00

Page 13

Kenmore 2500

15 GALLON

CENTRAL HUMIDIFIER

For the repair or replacement parts you need

Call 7:00 a.m. - 7:00 p.m., 7 days a week

1-800-366-PART

(1-800-366-7278)

For in-home major brand repair service

Call 24-hours a day, 7 days a week

1-800-4-REPAIR

(1-800-473-7247)

For the location of a

Sears Repair Service Center in your area

Call 24-hours a day, 7 days a week

1-800-488-1222

For information on purchasing a Sears

Maintenance Agreement or to inquire

about an existing Agreement

Call 9:00 a.m. - 5:00 p.m., Monday-Saturday

1-800-827-6655

SEARS

r;/,'/,,IR_,/_/_ri/_

America's Repair Specialists

Tell Sears You Want It Installed, Then Relax...

When Sears arranges the installation, you can be sure the job is cloneright.We willarrange for professional workmanship...and

we'll take care of the entire project. What's more, during installa- tion you get insured protection...against property damage and

also against accidents to workmen. All you have to do istalk to your Sears salesperson or call 1-800-4MY HOME (1-800-469-4663) or your nearest Sears store today for detailed information.

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

10-00 215960-01-06 Printed in U.S.A.