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ANNUAL MAINTENANCE
ANNUAL SUMMER SHUTDOWN
For best performance, we recommend that you replace the
Humidifier Pad in your Humidifier annually.
To obtain a replacement:
• Call your heating and air conditioning dealer.
• Look in the Yellow Pages under Heating & Air Conditioning Contractors.
• If none of the above are successful and you still need information,
please feel free to write us or send an email to our website.
For Models EHUMD200ABM00B, EHUMD300ABA00B
close the bypass damper.
AUTOMATIC HUMIDIFIER CONTROL:
Humidifiers controlled by the Automatic Humidifier Control require no
control adjustment. Shut off the water supply to the humidifier by closing
the saddle valve.
MANUAL HUMIDIFIER CONTROL:
For
humidifiers controlled by a Manual Humidifier Control, simply turn the
Control to the “Off” position. Shut off the water supply to the humidifier
by closing the saddle valve.
PERIODIC PREVENTATIVE MAINTENANCE
NOTE: Periodic inspection and preventive maintenance of your total
heating system is important for efficient and safe operation. Your heating
dealer should perform humidifier service at the same time.
All models are equipped with an in-line water strainer and orifice as
shown below. These parts should be inspected and cleaned periodically to
assure continued proper humidifier performance.
WARNING
Disconnect Electrical Power and Shut Off Water
Supply Before Servicing. Failure to follow this warning may cause
property damage, personal injury or death.
CAUTION
Turn Humidifier Control to “OFF” or lowest
setting before servicing. Sudden operation may cause personal injury
or property damage.
1. Disconnect electrical power to the furnace and
shut off water supply.
2. Disconnect the water line at the inlet
compression nut.
3. Remove the in-line strainer from inside the inlet
side of the valve by using a small nail or wire.
4. Flush the in-line strainer clean or replace with a
new strainer, Service Part No. SRA00859.
5. Reconnect the inlet water line.
Double Wrench
to Prevent Leaking.
6. Disconnect the water feed tube at the outlet
compression nut.
7. Inspect the water feed tube (plastic only) by
gently flexing it and looking for cracks or signs of
wear. Replace tube if it is cracked, brittle, or has
been damaged.
8. Remove the orifice from the copper or plastic
water feed tube and make sure this small opening
is unplugged.
9. Replace the orifice and reconnect the water feed tube.
Double Wrench to
Prevent Leaking.
10. Remove the drain line from the bottom of the humidifier. If applicable, flex it to
loosen any mineral deposits or blockages. Flush the drain line with water under
pressure to clear it of any debris, and slip it back onto the drain fitting. If drain
line does not clean properly, replace it. Inspect the drain line to make sure it
has a constant downward slope and is not flattened or blocked.
11. Turn on water supply and reconnect electrical power to the furnace.
WATER LINE INSPECTION AND SERVICE INSTRUCTIONS
INLET
COMPRESSION
NUT
INLET
SOLENOID
VALVE
ORIFICE
OUTLET
COMPRESSION
NUT
IN-LINE
STRAINER
WATER
FEED TUBE
90-1053
