HHUMumidifiers
HOMEOWNER’S MANUAL
Model HUMCCLFP1025-A--
Fan-Powered Humidifier
Model HUMCCSFP1016-A--
Fan-Powered Humidifier
Model HUMCCLBP2018-A--
Bypass Humidifier
Model HUMCCWTR2019-A--
Water-Saver Bypass Humidifier
Model HUMCCSBP2017-A--
Bypass Humidifier
NOTE TO INSTALLER: This manual should be left with the equipment user.
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• Supply- and return-air grilles should not be blocked by items
such as drapes, furniture, and toys. Restricted airflow reduces
the efficiency of the humidifier, as well as that of the whole com-
fort system.
SOLENOID VALVE
DISTRIBUTOR COVER
DISTRIBUTOR PAN
EVAPORATOR PAD
• The humidifier unit must be properly maintained on a regular
basis.
STARTUP PROCEDURES
1. Open the saddle valve on the water supply line. (See Fig. 4.)
Set humidistat to the desired relative humidity. (See Fig. 5
and Table 2.)
CABINET
2. Turn the furnace on and adjust the thermostat to a high tem-
perature setting. Be sure that the furnace blower is operating.
3. Check to see if water is flowing into the humidifier.
BOTTOM ACCESS PANEL
Fig. 7 — Model HUMCCLP1025-A--
HUMIDISTAT
INLET
SOLENOID VALVE
CABINET
Fig. 4 — Saddle Valve
Fig. 5
DISTRIBUTOR PAN
EVAPORATOR PAD
• On a Model HUMCCLBP or Model HUMCCLFP humidifi-
er, loosen the thumbscrew that holds the distributor cover to the
top of the cabinet. Lift up the distributor cover slightly to make
certain that water is flowing from the solenoid valve into the
distributor pan. Do not lift the cover off the cabinet more than
1 in. when water is flowing. (See Fig. 6 or 7 according to the
model you own.)
DUCT HOUSING
SIDE ACCESS DOOR
RECTIFIER
DRAIN
SOLENOID VALVE
Fig. 8 — Model HUMCCSBP2017-A--
DISTRIBUTOR COVER
DISTRIBUTOR PAN
EVAPORATOR PAD
CABINET
FRONT COVER
CABINET
SCREWS (4)
PAD ASSEMBLY
BOTTOM ACCESS
PANEL
Fig. 6 — Model HUMCCLBP2018-A--
• On a Model HUMCCSBP humidifier, gently pull the latch
that secures the access door. Remove the door. Check to see if
water is flowing from the solenoid valve into the evaporator pad.
(See Fig. 8.)
SIDE ACCESS DOOR
• On a Model HUMCCSFP humidifier, open the side door or
the front cover. If the front cover is opened, hold the pad assem-
bly in place. Check to see if water is flowing from the solenoid
valve into the distributor pan. (See Fig. 9.)
Fig. 9 — Model HUMCCSFP1016-A--
• On a Model HUMCCWTR unit, look through the window on
front of the unit to see that the evaporator pad is rotating and
water is flowing. (See Fig. 10.)
4. Turn off the furnace. When the blower stops, look into the
humidifier to make sure the water is not flowing into the
unit.
5. Replace the cover assembly and fasten securely.
6. Now, turn the furnace on and set the thermostat for desired
room temperature.
The Model HUMCCWTR is controlled by a float valve. Turning
off the furnace will not affect the water flow until float level is
achieved. (See Fig. 11.)
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SHUTDOWN PROCEDURES
CLEANING PROCEDURES
Models HUMCCLBP, HUMCCSBP, HUMCCLFP, and
HUMCCSFP
To shut down your humidifier, close the saddle valve on the wa-
ter line. Then turn off the humidistat. When set to the OFF posi-
tion, the humidistat shuts off the electrical power to the solenoid
valve on the humidifier.
1. Turn off all electrical power to the humidifier and furnace
or fan coil.
NOTE: If your home comfort system includes cooling, be sure
the water supply to your humidifier isturned offduring the cool-
ing season. Close the damper located in the bypass duct if one
is installed. If your humidifier is a Model HUMCCWTR, drain
and clean the water pan as described in cleaning procedures.
2. Turn off the humidifier’s water supply. (See Fig. 4.)
3. Disassemble the humidifier.
• To disassemble a Model HUMCCSBP humidifier, gently pull
the latch that secures the access panel. Remove the door and
slide the evaporator pad assembly out of the unit. (See Fig. 8.)
PERFORMING ROUTINE MAINTENANCE
• To disassemble either a Model HUMCCLBP or Model
HUMCCLFP humidifier, first remove the water supply con-
nection to the solenoid valve. Next, remove the screw that
holds the distributor cover to the cabinet, and lift off the cover.
Disconnect the drain line from the sump and loosen the
thumbscrew(s) holding the sump to the cabinet. Remove the
sump. Remove evaporator pad assembly. (See Fig. 6 or 7,
according to the model you own.)
With the proper maintenance and care, your humidifier will op-
erate economically and dependably. Maintenance can be accom-
plished easily by referring to the following directions. However,
before performing any maintenance, consider these important
safety precautions:
• DISCONNECT ALL ELECTRICAL POWER TO THE
HUMIDIFIER AND FURNACE BEFORE PERFORMING
ANY SERVICE OR MAINTENANCE TO AVOID PER-
SONAL INJURY.
• To disassemble a Model HUMCCSFP, the pad assembly can
be removed from the side access door or the front cover. When
removing the side door, lift the pad assembly up by holding the
tabs and slide the assembly out. When removing the front cover
on Model HUMCCSFP, disconnect the quick connects to the
solenoid valve, unscrew the 4 screws to the front cover, snap
loose the top and bottom catches, and lay the front cover aside.
Once the front cover is off, lift the pad assembly up and twist it
out. The pad assembly consists of 4 parts; the distributor pan,
frame, sump, and the evaporator pad. Pull the distributor pan
apart from the frame and the evaporator pad can be removed. Do
not force the evaporator pad in or out without removing the dis-
tributor pan as this will distort the pad.
BEARING RETAINER
4. Clean the humidifier’s external components.
• If your humidifier is a Model HUMCCSBP humidifier, wash
the access door and outlet drain portion of the cabinet. Make
sure the drain is open.
CABINET
PAD
• If your humidifier is a Model HUMCCLBP or HUMCCLFP,
wash the distributor cover, sump cover, and cabinet. Be sure the
inlet ports are open and clean. Then, clean the sump with a solu-
tion of detergent and water.
PAN
Fig. 10 — Model HUMCCWTR2019-A--
5. Clean the internal components of your humidifier. Wash the
distributor pan with a mild detergent and warm water. Be
sure holes and slots in the pan are clean and unobstructed.
Wash the evaporator pad assembly in a detergent solution.
If there are scale deposits on the pad, soak it in ordinary
household vinegar. If the pad is covered by a heavy deposit
of scale, or if the local water supply has high sulfate or cal-
cium content, replace the pad with a new one. Contact your
dealer for replacement part.
NOTE: THERE MAY BE MORE THAN 1 ELECTRICAL
DISCONNECT SWITCH.
• ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO
MINIMIZE SHARP EDGES IN THE CONSTRUCTION OF
YOUR HUMIDIFIER, BE EXTREMELY CAREFUL WHEN
HANDLING PARTS OR REACHING INTO THE UNIT TO
AVOID PERSONAL INJURY.
6. Reassemble your humidifier.
7. Turn on the electrical power and water supplies. Refer to
the startup procedures.
Your humidifier has been designed for easy disassembly to sim-
plify cleaning and servicing. Your unit must be kept clean to
maintain its efficiency.
Model HUMCCWTR
1. Turn off all electrical power to the humidifier and furnace
or fan coil.
Regular inspection allows you to determine the cleaning sched-
ule best suited to your humidifier’s operating conditions. The
frequency for required maintenance will depend most upon the
available water supply. In areas where hard water and high min-
eral content are prevalent, more frequent cleaning and servicing
may be required.
2. Turn off the humidifier’s water supply. (See Fig. 4.)
3. Drain water from the unit. Place a pail underneath the drain
plug located on the bottom of the humidifier cabinet. Lift
the tab on the drain plug and remove the plug. Allow all
water to drain from the unit. (See Fig. 12.)
At minimum, the humidifier will need to be cleaned at the be-
ginning of every heating season.
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4. Remove the front door from the humidifier. Rotate the
latches one-half turn, then pull the door forward.
5. Remove and inspect the evaporator pad assembly. Lift the
bearing from its retainer. (See Fig. 10.) Pull the assembly
away from the motor to disengage the assembly shaft from
the motor coupling. Remove assembly through the access
opening.
Inspect the evaporator pad. If the pad is heavily loaded with
scale, or if the local water has a high sulfate content, replace the
pad. Contact your dealer for replacement part.
BEFOREYOU REQUEST A “SERVICE CALL’’
BEFOREYOU CALL FOR SERVICE, CHECK FOR
THESE EASILY SOLVED PROBLEMS:
• Check the main power disconnect
switch. Verify that the circuit break-
ers are on and that fuses have not
blown. If you must reset breakers or
replace fuses, do so only once. Con-
tact your servicing dealer for assis-
tance if the breakers trip or the fuses
blow a second time.
NOTE: For best performance, the evaporator pad should be
replaced before each heating season.
6. Inspect the float assembly. Remove the float arm from the
valve body by sliding out the pin and lifting off the float
arm. (See Fig. 11.) Inspect the rubber valve seat located in-
side the float arm. If the seat appears to be nicked or worn,
invert the seat or replace it with the spare valve seat located
on the float arm. Inspect the water opening in the valve
body. If the opening is clogged, use a pin to remove the
obstruction. Remove any accumulated deposits from the
valve body and float arm.
7. Clean the water pan and unit cabinet. Tilt the water pan and
lift it from the unit. Wash the pan with warm, soapy water.
Flex the pan to loosen accumulated scale. Wash the unit in-
terior, removing any accumulated deposits. Inspect the
drain line to insure that no blockage has occurred. Clean as
required. (See Fig. 12.)
8. Reassemble your Model HUMCCWTR humidifier. Rein-
sert the water pan and drain plug. Ensure that the overflow
tube is inserted into the hole at the bottom of the cabinet.
Attach the float arm to the valve body by aligning the holes
on both parts and reinserting the pin. Do not force or bend
the pin. The float arm should have free up-and-down move-
ment. Install the evaporator pad assembly. Ensure that the
square shaft engages the motor coupling and that the bear-
ing washer is located inside the bearing retainer. Turn the
water on. Adjust float by rotating until water covers inside
of foam drum. Attach the access door and turn the latches.
• If the humidity level is too low, check the humidistat setting.
Confirm that the saddle valve is turned on. Check the evapora-
tor pad, and clean or replace the pad as necessary. Check water
level in Model HUMCCWTR.
• Check for sufficient airflow. Check the furnace filter or elec-
tronic air cleaner for excessive accumulations of dirt. Check for
blocked return- or supply-air grilles. Be sure grilles are open
and unobstructed.
• If water drips from the humidifier, check the drain hose for
kinks or obstructions. If your unit is a Model HUMCCWTR,
dripping may indicate that the float valve requires adjustment.
If your comfort system still fails to operate properly, contact
your servicing dealer for troubleshooting and repairs. Specify
your apparent problem, and state the model and serial numbers
of your equipment. (You should have them recorded where
noted in this booklet.)With this information, your dealer may be
able to offer helpful suggestions over the phone, or save valuable
time through knowledgeable preparation for the service call.
PIN
FLOAT ARM
VALVE
BODY
HIGHER
LOWER
VALVE SEAT
REGULAR DEALER MAINTENANCE
In addition to the routine maintenance that you perform, your
humidifier should be inspected regularly by a properly trained
service technician. The inspection (preferably each year, but at
least every other year) should include the following:
Fig. 11 — Float Arm Removal
HUMIDIFIER HOUSING
WATER PAN
• Routine inspection of the humidifier. Cleaning, if necessary.
Cleaning or replacement of the evaporator pad as required.
• A check of all electrical wiring and connections.
• A check of water connections to the unit.
DRAIN PLUG
OVERFLOW TUBE
• Operational check of the complete comfort system to deter-
mine actual working condition. Necessary repair and/or adjust-
ment should be performed at this time.
Fig. 12 — Cleaning Water Pan and Unit Cabinet
Your servicing dealer may offer an economical service contract
that covers seasonal inspections. Ask for further details.
9. Turn on electrical power supplies. Refer to startup proce-
dures listed on page 3.
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Record the model and serial numbers of your new humidifier in
the following spaces. This information, along with the other
ready-reference facts requested below, may be required if you
should ever need information or service.
Model No._________________________________________
Serial No. _________________________________________
Date Installed ______________________________________
Dealer Name_______________________________________
Address___________________________________________
City ______________________________________________
State ____________________ Zip_____________________
Telephone _________________________________________
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the
“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part
Carrier Corporation Indianapolis, IN 46231
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Copyright 1998 Carrier Corporation
Form: OMHUM-1
Replaces: OM49-9
Printed in the U.S.A.
7-98
PC 101
Catalog No. 03HU-MC0
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