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H46C,E HUMIDITY CONTROLLERS
H46
(COVER ON)
Fig. 2. Mounting H46E with two screws.
STANDARD WALL OUTLET
OR EXTENSION CORD
TO H46E
DEHUMIDIFIER PLUG
TO DEHUMIDIFIER
Fig. 3. Connecting H46E interrupter plug.
WIRING
Disconnect power supply before connecting wiring to
avoid electrical shock or equipment damage. All wiring
must comply with local codes and ordinances. Do not
exceed contact and coil ratings when wiring into the
system.
Connections and Operation
A dehumidistat in combination with the thermostat
can be used to run the air conditioner to control
relative humidity levels. The H46C dehumidistat and
thermostat can be wired in parallel or in series.
Wiring in parallel allows the dehumidistat to
independently control the humidity level, but could
cause overcooling of the home. During unoccupied
times, the homeowner should set the thermostat to a
relatively high setting and control moisture using the
dehumidistat.
69-1000EF—03
WOOD SCREWS
2 IN.
KEYHOLES
IN BACK OF
CASE (2)
WALL
SURFACE
M7908A
CORD
H46E PLUG
M7909A
Wiring in series prevents overcooling but the air
conditioner runs only when both the thermostat and
dehumidistat are calling. During unoccupied times,
the homeowner should set the thermostat to a
relatively low setting and control moisture using the
dehumidistat.
HUMIDITY
RISE
L1
(HOT)
POWER
1
SUPPLY
L2
1
PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
Fig. 4. Typical wiring diagram for H46C,E.
SETTINGS AND
ADJUSTMENT
The H46 makes contact on a relative humidity rise to
the set point to start the dehumidifier. On a decrease
in relative humidity to the set point (minus the
differential), the switch breaks contact to stop the
dehumidifier. Turn the knob clockwise to the setting
stop to place the H46 in the ON position. Turn the
knob counterclockwise to the stop to place the H46 in
the Off position.
CHECKOUT
After all mounting and wiring is completed, turn on the
power supply. Place the system into operation by
turning the setting knob toward the low end of the
scale until the dehumidifier motor starts. Turn the
setting knob slowly toward the high end of the scale
until the dehumidifier motor stops.
FLOAT FLOAT
Fig. 5. Typical wiring diagram for H46C with
dehumidifier without system fan control.
2
H46C,E
CONTROLLER
DEHUMIDIFIER
EXHAUST FAN
OR AIR
CONDITIONER
H46C
DHUM
R
FAN
C
DEHUMIDIFIER
M38265
M7915A
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