Carrier 49BG User Manual

49WS

A89459

A89452

'''' - -V

to INSTALLER: This manual should be left with the equipment user

REFRESHING MOISTURE... AS NATURE

INTENDED

Congratulations on your excellent choice and sound invest
ment in this addition to your home comfort system.

Your humidifier represents both the latest in engineering
development and the culmination of many years of experi
ence from one of the most reputable manufacturers of com
fort systems.

Your new unit is among the most energy-efficient and reli
able home humidifiers available today. To assure its depend
ability, spend just a few minutes with this booklet now.
Learn about the operation of your humidifier and the small
amount of maintenance it takes to keep it operating at peak
ef&ciency.

With minimal care, your humidifier will provide you and
your fEimily with moist, spring-fresh air—from season to
season, and year to year.

YOUR HOME HUMIDIFIER

YOUR HOME CAN BE DRIER THAN DEATH VALLEY

During the heating season, your home can become uncom
fortably dry. This is because cold winter air holds very little
moisture. When outdoor air is warmed to average room tem
perature, its relative humidity falls to even lower levels.

Refer to Table 1 for a comparison of the levels of relative

humidity for a few sample environments.

description of the process: Water flows through a valve to
soeik the large evaporator pad. Hot, dry air from the furnace
passes through the pad smd absorbs the water. Then, this
moisture-laden air is distributed throughout the house via

the ductwork. See Figs. 1, 2, and 3.

Table 1—Relative Humidity Comparison Chart

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Parched air can cause the wood used in the construction of
your house and furnishings to dry, crack, and split. Draper
ies and upholstery may age prematurely. Annoying static
electric shock is more prevalent. Your throat, nasal pas
sages, sinuses, and skin are more susceptible to irritating
dryness. You may even have to set the thermostat higher
than otherwise necessary—just to feel warm.

MOISTURE MAKES A REFRESHING DIFFERENCE

Proper humidity control can eilleviate problems caused by
excessive dryness. Furnishings and fabrics take on a more
lustrous appearance. Houseplants thrive. Static electricity
is significantly reduced in a properly humidified home. Your
family will breathe more easily and be relieved from the
cool, drafty feeling commonly experienced in overly dry
homes. The additional moisture supplied by your humidifier
may enable you to reduce the temperature setting on your
thermostat—without any loss of indoor comfort.

HOW YOUR HUMIDIFIER WORKS

Your humidifier adds water molecules to the air inside your
home. Although the rate of humidification is variable, it
may exceed one-half gallon of water per hour. That’s a
healthy drink for a dry household. The following is a brief

OPERATING YOUR HUMIDIFIER

Your new humidifier is designed to operate as part of your
home heating system. It will perform at maximum effi
ciency if these recommendations are followed;

• If your humidifier is controlled by a humidistat, adjust
its setting according to the outside temperature. Refer to
Table 2 as a general guide. If, after several days, the air in
your home seems too moist, lower the humidistat setting.
Condensation on single-pane windows indicates excessive
moisture. However, if the air is too dry, raise the setting.
Dry throat and nasal passages indicate dry air.

• If your system does not include a humidistat, consider
running the heating unit blower continuously—day and

night. Uninterrupted blower operation provides for con
stant humidification. It may also contribute to greater per
sonal comfort because continuous blower operation mini

mizes temperature differences throughout the home. Fur

thermore, a system equipped with an electronic air cleaner
offers the added benefit of full-time air filtration.

• Supply- and return-eiir grilles should not be blocked.
Drapes, furniture, and toys are some of the items commonly
found obstructing grilles. Restricted airflow reduces the
efficiency of the humidifier, as well as that of the whole com
fort system.

• 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.

WA

Table 2—Humidistat Settings

OUTSIDE

TEMPERATURE HUMIDISTAT SETTING

(F°)

-20

-10

- 0
10
20

Above 20

RECOMMENDED

(% RELATIVE HUMIDITY)

15
20
25
30
35
40

2. Turn the furnace ON and adjust the thermostat to a
high temperature setting. Be sure that the furnace
blower is operating.

3. Check to see if water is flowing into the humidifier.

• If yours is a Model 49BF or Model 49FH humidifier,
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.

DISIRIBUIOBCOWB

DIS1RIBUTQB PAN

EVAPOBATOH PAD

• CABINET

BOTTOM ACCESS
PANEL

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MODEL 49BF

•

• On a Model 49BG humidifier, gently piill the latch that
secures the access door. Lift the door about 1 in. Check to
see if water is flowing from the solenoid VEilve into the dis
tributor pan. See Fig. 8.

• If your humidifier is a Model 49WS unit, look through
the window on front of the unit to see that the evaporator
pad is rotating and water is flowing. See Fig. 9.

4. Turn OFF the furnace. When the blower stops, look
into the humidifier to make sure the water is not flow
ing into the unit.

NOTE; The Model 49WS is controlled by a float valve.

Turning off the furnace will not affect the water flow until
maximum heater level is achieved.

5. Replace the cover assembly and fasten securely.

6. Now, turn the furnace ON and set the thermostat for
desired room temperature.

SHUTDOWN PROCEDURES

To shut down your humidifier, simply close the saddle valve
on the water Une. Then turn OFF the humidistat. When set
to the OFF position, the humidistat shuts off the electrical
power to the solenoid valve and/or motor on the humidifier.

NOTE: If your home comfort system includes cooling, be