Carrier 49BG - Manual (Page 3)

Table 2—Humidistat Settings
OUTSIDE RECOMMENDED
TEMPERATURE HUMIDISTAT SETTING
(F°) (% RELATIVE HUMIDITY)
-20 15
-10 20
- 0 25
10 30
20 35
Above 20 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
A87184 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