Maintenance Instructions; Small And Large Bypass Humidifiers; Fan Powered Humidifiers - CAC / BDP FOR BYPASS AND FAN POWERED HUMIDIFIERS Owner's Manual

MAINTENANCE INSTRUCTIONS FOR

SMALL AND LARGE BYPASS HUMIDIFIERS

90-819
CAUTION! Sudden operation may cause personal injury or property damage.
Turn humidistat to "OFF" before servicing.
1. Note humidistat setting and turn
humidistat to the "OFF" position.
2. At the side of the unit opposite the
airflow duct, pull front cover (1) off
holding with both hands and set aside.
3. Carefully pull the feed tube (2) out of
the nozzle (3) at the top of the
evaporative assembly (4). Pull this
assembly out by grasping at top and
tipping out.
4. Remove the black distribution tray (5)
from the evaporative assembly by
unsnapping the white plastic ends of
the Scale Control Insert (8), from the
tabs at the end of the tray. Follow the
instructions below depending upon
the type of distribution tray in your
humidifier:
For trays with a synthetic fabric liner:
Lightly scrape out or brush off any
mineral deposits, being careful not to
stretch or loosen the synthetic fabric
liner. Soaking the tray in vinegar or a
lime-removing agent is helpful when
trying to remove stubborn mineral
deposits.
For trays with granular coating: Do not
scrape off the granular coating, but
lightly scrape out any mineral deposits
and clean the "V" notches (6). This
textured surface helps ensure even
water flow for maximum performance.
If the granular coating has been
removed, place several drops of liquid
dishwashing soap on the distribution
tray. This will only need to be done
once if there is no granular coating.
1. Front Cover
2. Feed Tube
3. Nozzle
4. Evaporative Assembly
5. Distribution Tray
6. "V" Notches
7. Humidifier Pad
8. Scale Control Insert
9. Drain Hose
10. Bypass Damper
5. Slide the humidifier pad (7) out from the
plastic Scale Control Insert (8). Clean the insert
frame by twisting and flexing it to loosen the
calcium deposits, or use a putty knife. Replace the
humidifier pad (Part No. P110-1045 for Small
Bypass Humidifier and Part No. P110-3545 for Large
Bypass Humidifier) and slide the pad back into the
scale control insert frame with color mark up. Snap
the black distribution tray (5) back into place.
6. Inspect plastic feed tube by gently flexing it and
looking for cracks or signs of wear. Replace tube if
it is cracked, brittle, or has been damaged.
7. Reinstall the evaporative assembly into the unit by
fitting its drain tube into the round receptacle at the
base of the unit. Push the assembly in at the top
against the beveled tabs that will hold it in place.
Push the end of the feed tube back firmly into the
nozzle and replace the front cover.
8. Remove the drain hose (9) from the bottom of the
unit and bend and flex it to loosen the internal
calcium deposits. Then flush it with water under
pressure and slip it back onto the black drain fitting.
Make sure the drain hose has a constant
downward slope and is not flattened or blocked.
9. Check system operation:
Manual Humidistat: With the furnace blower
operating and the furnace calling for heat, turn up
Humidistat and check system operation.
HumidiTrac™ Humidifier Control: (Automatic or
Manual) Check system operation and reset Change
Humidifier Pad indicator by setting the knob to
"Test/Reset". With furnace blower operating and
furnace calling for heat, humidifier will operate for
one minute. DO NOT LEAVE IN TEST MODE AS
HUMIDIFIER WILL NOT OPERATE.
10. Set Manual Humidistat or HumidiTrac™ Humidifier
Control to its original position.
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MAINTENANCE INSTRUCTIONS FOR
FAN POWERED HUMIDIFIER
1
1. Front Cover
2. Base
3. Evaporative Assembly
4. Distribution Tray
5. "V" Notches
6. Humidifier Pad
7. Scale Control Insert
8. Drain Hose
9. Power Cord
WARNING! 120 VOLTS may cause serious injury from electrical shock. Disconnect power and
shut off water supply before servicing.
1. Note humidistat setting and turn humidistat
to the "OFF" position.
2. Disconnect electrical power and turn off
water supply.
3. Unlatch humidifier cover assembly (1) from
base assembly (2) at the bottom of the
cover, lift, and set aside.
4. Pull out the evaporative assembly (3) by
grasping at the top and tipping out.
5. Remove the black distribution tray (4) from
the evaporative assembly by unsnapping
the white plastic ends of the Scale Control
Insert (7), from the tabs at the end of the
tray. Follow the instructions below
depending upon the type of distribution tray
in your humidifier:
For trays with a synthetic fabric liner:
Lightly scrape out or brush off any mineral
deposits, being careful not to stretch or
loosen the synthetic fabric liner. Soaking
the tray in vinegar or a lime-removing
agent is helpful when trying to remove
stubborn mineral deposits.
For trays with granular coating: Do not
scrape off the granular coating, but lightly
scrape out any mineral deposits and clean
the "V" notches (5). This textured surface
helps ensure even water flow for maximum
performance. If the granular coating has
been removed, place several drops of
liquid dishwashing soap on the distribution
tray. This will only need to be done once if
there is no granular coating.
3
4 5
7
6
8
9
6. Slide the humidifier pad (6) out from the plastic
Scale Control Insert (7). Clean the insert frame by twisting
and flexing it to loosen the calcium deposits or use a
putty knife. Replace the humidifier pad (Part No.
P110-3545) back into the Scale Control Insert with the
colored spot up and snap the black distribution tray (4)
back into place.
7. Reinstall the evaporative assembly (3) into the base
assembly (2). Push the evaporative assembly (3) in at the
top between the retaining ribs that hold the assembly in
place in a vertical position.
8. Remove the drain hose (8) from the bottom of the unit.
Bend and flex it to loosen the internal calcium deposits.
Then flush it with water under pressure and slip it back
onto the drain fitting. Make sure the drain hose has a
constant downward slope and is not flattened or blocked.
9. Reinstall cover assembly (1) by hooking at the top of base
assembly (2) and latching at the bottom.
10. Reconnect electrical power (9) and turn on water supply.
11. Check system operation:
Manual Humidistat: With the furnace blower operating
and the furnace calling for heat, turn up Humidistat and
check system operation.
HumidiTrac™ Humidifier Control: (Automatic or Manual)
Check system operation and reset Change Humidifier
Pad indicator by setting the knob to "Test/Reset". With
furnace blower operating and furnace calling for heat,
humidifier will operate for one minute. DO NOT LEAVE IN
TEST MODE AS HUMIDIFIER WILL NOT OPERATE.
12. Set Manual Humidistat or HumidiTrac™ Humidifier
Control to its original position.
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