Honeywell Dehumidifier H808C User Manual

H808C  
Convertible Dehumidifier Controller  
4. Remove the humidity controller assembly by prying  
Application  
with a screwdriver in the notch on the bottom of the case  
(Fig. 1).  
The H808C Dehumidifier Controller provides automatic  
5. Position the case horizontally over the wires with the  
low voltage control of dehumidifiers in central heating  
arrows on the tabs pointing up and secure the case to the  
systems. The humidity controller has an spst, snap-acting,  
wall using the two screws provided.  
dust-proof switch and is designed for wall or surface duct  
6. Connect the wires to the humidity controller assem-  
mounting.  
bly using leadwires and wire nuts provided (see Wiring  
section and Fig. 2).  
7. Tuck the wires into the bottom of the case.  
8. Snap the cover assembly into the case (Fig. 2).  
MODELS:  
I H808C1029: Premier White™.  
I H808C1037: Beige.  
ELECTRICAL RATING: 50 VA at 24 Vac.  
Fig. 1—Removing humidity controller assembly  
from case.  
MAXIMUM AMBIENT TEMPERATURE: 125° F [52° C].  
SWITCH DIFFERENTIAL: 5 percent RH, nonadjustable.  
SET POINT ADJUSTMENT RANGE: 20 to 80 percent  
RH; positive ON and OFF positions.  
Installation  
CAUTION  
1. Installer must be a trained, experienced service  
technician.  
2. Disconnect power supply before beginning  
M9262  
installation.  
3. Conduct a thorough checkout before leaving  
installation.  
Fig. 2—Wiring connections on humidity  
controller.  
WALL MOUNTING  
1. Locate the humidity controller about 5 ft [1.5m]  
above the floor on an inside wall.  
QUICK-CONNECT  
WIRE LEAD  
NOTES:  
a. Be sure the humidity controller is subject to average  
room temperature and average relative humidity.  
The maximum temperature at the location selected  
must not exceed 125° F [52° C].  
b. The humidity controller can be mounted directly on  
COVER  
WIRE  
NUT  
the wall.  
HUMIDIFIER  
LEADWIRE  
CASE  
2. Drill a small hole in the wall.  
UP  
UP  
3. Run low voltage wiring to the location and pull about  
UP  
6 in. [152 mm] of wire through the hole.  
MOUNTING  
HOLE (2)  
NOTE: Plug the opening to prevent drafts from affecting  
M9263  
humidity controller operation.  
J.F. • 3-94 • ©Honeywell Inc. 1994 • Form Number 69-0821  
 
Fig. 5—Typical parallel wiring diagram of H808C with T87F/Q539A combination for dehumidification  
and mildew control.  
H808C  
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
M18627  
Fig. 6—Typical series wiring diagram of H808C with T87F/Q539A combination for dehumidification and  
mildew control.  
H808C  
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
M18626  
3
69-0821  
 
DUCT MOUNT HUMIDITY CONTROLLER  
If the temperature at the humidity controller location  
on the return air duct is less than 80° F [27° C] ,use the  
procedure for wall mounted humidity controllers.  
If the air surrounding the humidity controller is greater  
than 80° F [27° C], reset the recommended settings to  
compensate for the higher ambient temperature. High ambi-  
ent temperatures will cause the humidity controller to control  
at an increased setting. To determine the compensated set  
point for surface mounted humidity controllers with high  
ambient temperatures, use the following procedure:  
1. With a bulb type thermometer, accurately determine  
the surrounding duct temperature at the humidity controller  
location.  
Fig. 7—Typical wiring diagram for H46C,E.  
HUMIDITY  
1
RISE  
DEHUMIDIFIER  
L1  
EXHAUST FAN  
(HOT)  
OR AIR  
CONDITIONER  
H46C, E CONTROLLER  
L2  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
M9297  
WIRING  
All wiring must comply with local codes and ordi-  
nances. Make wiring connections according to to dehu-  
midifier instructions if available; otherwise, see typical  
wiring diagrams in Figs. 5 and 6.  
2. Decrease the recommended setting about five percent  
for each 5° F [3° C] above 80° F [27° C] at the humidity  
controller.  
For example, if the humidity controller is set at 25 per-  
cent and the temperature at the humidity controller is 90° F  
[32° C], the compensated set point should be 15 percent.  
(This is the 25 percent setting less 10 percent for the 10° F  
[6° C] above ambient temperature.)  
Settings  
HUMIDITY CONTROLLER ADJUSTMENT  
The humidity comfort range of a living space is gener-  
ally between 25 and 50 percent RH. However, as the  
outdoor temperature changes, the humidity level on the  
humidity controller may need to be reset to assure maxi-  
mum comfort.  
To reduce the relative humidity, reduce the set point ap-  
proximately three percent RH every 24 hours. To increase  
the relative humidity, increase the set point approximately  
three percent RH every 24 hours.  
Checkout  
Place the system in operation and observe through at  
least one complete cycle to make certain that all compo-  
nents are functioning properly.  
WALL MOUNT HUMIDITY CONTROLLER  
Set the humidity set point according to the prevailing  
outdoor temperature to provide optimum relative humidity  
control for most installations. Adjust the humidity level to  
a particular structure using the procedure above.  
Home and Building Control  
Honeywell Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
Home and Building Control  
Honeywell Limited—Honeywell Limitée  
740 Ellesmere Road  
Scarborough, Ontario  
M1P 2V9  
Helping You Control Your World  
QUALITY IS KEY  
PrintedinU.S.A.  
 

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