
Fig. 6 -Humidistat
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4. Open the side door. Check to see if water is flowing from
the solenoid valve into the distributor pan. (See Fig. 7.)
REWS(4)
Fig. 7 -Fan powered humidifier
A95262
5. Turn off the furnace. When the blower stops, look into the
hunfidifier to make sure the water is not flowing into the
unit.
6. Replace the cover assembly and fasten securely.
7. Now, turn the furnace on and set the thermostat for desired
room temperature.
SHUTDOWN PROCEDURES
To shut down your hunfidifier, close the saddle valve on the water
line. Then turn off the hunfidistat. When set to the OFF position,
the humidistat shuts off the electrical power to the solenoid valve
on the hunfidifier.
NOTE: If your home comfort system includes cooling, be sure the
water supply to your hunfidifier is turned off during the cooling
season.
PERFORMING ROUTINE MAINTENANCE
With the proper maintenance and care, your hunfidifier will operate
econonfically and dependably. Maintenance can be accomplished
easily by referring to the following directions. However, before
perfornfing any maintenance, consider the following important
safety precautions.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal iniury
or death.
The following procedures could expose hazardous live
components. Only a trained, experienced service person
should install this hunfidifier. Before perfornfing installation,
service or maintenance operations on unit, turn off all power to
unit. TAG DISCONNECT SWITCH WITH LOCKOUT
TAG.
CUT HAZARD
Failure to follow this caution may result in personal iniury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
Your hunfidifier has been designed for easy disassembly to
simplify cleaning and servicing. Your unit must be kept clean to
maintain its efficiency.
Regular inspection allows you to deternfine the cleaning schedule
best suited to your hunfidifier's operating conditions. The
frequency for required maintenance will depend most upon the
quality of the available water supply. In areas where hard water and
high nfineral content are prevalent, more frequent cleaning and
servicing may be required.
At minimum, the hunfidifier will need to be cleaned at the
beginning of every heating season.
CLEANING PROCEDURES
1. Turn off all electrical power to the hunfidifier and furnace or
fan coil.
2. Turn off the hunfidifier's water supply. (See Fig. 5.)
3. Disassemble the hunfidifier. The pad assembly can be re-
moved 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, 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.
After the front cover is off, lift the pad assembly up and
twist it out. The pad assembly consists of 4 parts; the dis-
tributor 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 distributor pan as this will distort the
pad.
4. Clean the hunfidifier's external components.
5. Clean the internal components of your hunfidifier. Wash the
distributor pan with a nfild 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.
6. Reassemble your hunfidifier.
7. Turn on the electrical power and water supplies. Refer to the
start-up procedures.