Sears 2500 - Manual (Page 9)

Backplate
Mounting.
Screws \,
(4) ^
Hole In Wall
Mounting
Screws (2)-
Cover
Knob
Wall Mount
Control
Unit
NOTE: By turning knob to the test position humidifier should
start. {Do not leave on test.) If the installation is being made in
the summer or when the humidity is high, turn knob to the test
position aid 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
occur.
Change knob settings as outdoor temperature changes
WARNING:
DO NOT LEAVE KNOB SET ABOVE “+20” OR HUMIDI­
FIER WILL RUN CONSTANTLY AND MAY OVER HU­
MIDIFY YOUR HOME.
IF SWEATING OF WINDOWS OR WALLS
OCCURS OR IF AIR IS TOO 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 humidifier! 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 dean 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.