H46C Humidity Controllerꢀꢀ
INSTALLATION INSTRUCTIONS
5.ꢀꢀ Pull the wires from the switch box through the
opening in the adapter plate and connect to the
H46 leadwires with the solderless connectors
provided. See Fig. 2 and 3 for typical hookup.
6.ꢀꢀ Push the wires back into the switch box.
7.ꢀꢀ Place the H46 against the adapter plate, making
certain the tab at the bottom of the plate fits into the
notch on the H46.
APPLICATION
The H46C Humidity Controller is used with portable and
central unit dehumidifiers to maintain relative humidity.
The H46 has an spst, snap-acting switch designed for
line voltage circuits and two leadwires for switch box
mounting.
8.ꢀꢀ Fasten the H46 to the adapter plate by tightening
the captive screw.
9.ꢀꢀ Replace the cover and the setting knob.
INSTALLATION
2 X 3 IN.
SWITCH BOX
When Installing this Product...
ADAPTER PLATE
SCREWS (2)
1.ꢀꢀ Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
H46 CAPTIVE
MOUNTING SCREW
2.ꢀꢀ Check the ratings in the instructions and on the
product to make sure the product is suitable for
your application.
H46
(COVER OFF)
3.ꢀꢀ Installer must be a trained, experienced service
technician.
4.ꢀꢀ After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock Hazard.ꢀꢀ
Can cause electrical shock or equipment ꢀ
damage.ꢀ
Disconnect power supply before connecting
wiring.
WALL SURFACE
ADAPTER PLATE
PLATE TAB
Location
NYLON
ELEMENT
M7907
H46 LEADWIRES (2)
Select a location about 5 ft (1.5m) above the floor in an
area with good circulation at average temperature and
humidity for the area to be controlled. Avoid locations
near hot or cold air ducts and discharged air from the
controlled equipment.
Fig. 1. Mounting H46C on vertical switch box.
Wiring
Disconnect power supply before connecting wiring to
avoid electrical shock or equipment damage. All wiring
must comply with local codes or equipment damage. All
wiring must comply with local codes and ordinances. Do
not exceed contact and coil ratings when wiring into
system. See Fig. 2.
Mounting
1. Remove the setting knob.
2. To remove cover, pull cover forward from device.
3.ꢀꢀ Install a 2 in. x 3 in. (51 mm x 76 mm) verticalꢀꢀ
switch box at the selected location.ꢀꢀ
4.ꢀꢀ Using the two screws provided, fasten the adapter
plate to the switch box, as shown.
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc. •
• All Rights Reserved
95-5367-4
H46C HUMIDITY CONTROLLER
H46C
T87F/Q539A INTERNALSCHEMATIC
T87F
FIXED
R1
COOL
ANTICIPATOR
FILTER
LIGHT
TEMPERATURE
FALL
ADJUSTABLE
HEAT
ANTICIPATOR
W1
Y1
HEAT OFF COOL
AUTO FAN ON
HEAT
OFF
COOL
3
2
R
H
X
B
O
W
Y
G
R
HEATING
RELAY OR
VALVE COIL
COOLING
CONTACTOR
COIL
FAN RELAY
COIL
1
PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS
AS REQUIRED.
HEATING DAMPER MOTOR, IF USED.
2
3
CLOGGED FILTER SWITCH OR COOLING PANEL CONNECTION.
1
M7914
Fig. 4. Typical series wiring hookup of H46C with T87F/Q539A combination
for dehumidification and mildew control.
3
95-5367-4
H46C HUMIDITY CONTROLLER
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
95-5367-4 G.H. Rev. 07-03
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