Sears 2500 manual Operation, Maintenance

Hole	In Wall
Mounting,	Mounting
Screws	Screws

(4)

I-<--Spacers

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.

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-

JWARNING: 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 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.

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.

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.

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.

1.Turn humidistat to minimum humidity setting.

2.Disconnect water supply at the humidifier using the quick dis- connect. The water is automatically shut off.

3, 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.

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

5.Pull out stainless steel pivot pin and remove float and float arm.

6.Pour contents of reservoir down the drain.

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

8.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).

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

Stretch media lengthwise before placing in wheel

10.If the 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.

11.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.

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