Setting And Adjustment; Checkout - Honeywell H46C Installation Instructions

H46C HUMIDITY CONTROLLER
HUMIDITY CONTROLLER
RISE
L1
(HOT)
POWER
1
SUPPLY
L2
1 PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
Fig. 2. Typical H46C wiring diagram.
Connections and Operation
A dehumidistat in combination with the thermostat can be
used to run the air conditioner to control relative humidity
levels. The dehumidistat and thermostat can be wired in
parallel or in series.
Wiring in parallel allows the dehumidistat to indepen­
dently 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.
H46C
R
1 PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS
AS REQUIRED.
HEATING DAMPER MOTOR, IF USED.
2
3
CLOGGED FILTER SWITCH OR COOLING PANEL CONNECTION.
Fig. 3. Typical parallel wiring hookup for H46C with T87F/Q539A combination
95-5367-4
H46C
DEHUMIDIFIER
EXHAUST FAN
OR AIR
CONDITIONER
FILTER
LIGHT
HEAT
3 2
H X B
for dehumidification and mildew control.
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.

SETTING AND ADJUSTMENT

M7923
The H46 makes contact on a relative humidity rise to the
setpoint to start the dehumidifier. On a decrease in
relative humidity to the setpoint (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
setting stop to place the H46 in the Off position.

CHECKOUT

After completing all mounting and wiring, 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.
T87F/Q539A INTERNALSCHEMATIC
T87F
R1
W1 Y1
OFF COOL
HEAT OFF
O W
HEATING
RELAY OR
VALVE COIL
COOLING
CONTACTOR
COIL
2
FIXED
COOL
ANTICIPATOR
TEMPERATURE
FALL
ADJUSTABLE
HEAT
ANTICIPATOR
AUTO FAN ON
COOL
Y G
FAN RELAY
COIL
R
1
M7913