Honeywell Tradeline H1008A Installation Instructions Manual page 6

H1008A,D AUTOMATIC HUMIDITY CONTROL
CHECKOUT
NOTE: The furnace blower must be on for the humidifier
to operate (does not apply to steam humidifier
applications).
IMPORTANT
When an outdoor sensor is not installed, allow
12 to 24 hours for the humidifier to start operat-
ing. This delay is caused by the method used to
determine outdoor temperature conditions. If the
furnace is off for more than 24 hours or the
outdoor temperature sensor reads greater than
63 ° F, the control enters an auto off mode where it
does not allow humidification until the furnace
cycles or the outdoor temperature drops below
60 ° F. This is to prevent the humidifier and air
conditioner from running simultaneously. The
control may enter dehumidification mode if the
house dewpoint rises above 58 ° F.
Outdoor Temperature Sensor Checkout
Check the thermistor sensor by comparing its resistance to
the temperature as measured by an accurate thermom-
eter. The resistance of the thermistor sensor inceases as
its temperature drops. Table 4 shows approximate sensor
resistance values at various temperatures.
Resistance (K ohm)
Temperature (°F)
Temperature (°C)
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524
69-1185EF—2 69-1185EF—2 G.H. Rev. 11-99
Table 4. Sensor Resistance at Various Temperatures.
333 99.2 74.3
-40 -4 5
-40 -20 -15
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 3N7
Test Mode
Use the following procedure to place the control in the test
mode and call for humidification/dehumidification:
1. Turn the frost factor setpoint dial to the Test position.
2. Do one of the following:
a. At the thermostat, with the system switch set
to HEAT and the fan switch to AUTO, move
the temperature setpoint about 10°F (6°C)
above the room temperature to call for heat,
or
b. Set the system switch to OFF and the fan
switch to ON for continuous fan operation.
3. Verify humidifier and/or dehumidifier/ventilation unit
is activated.
In the test mode, the indicator light remains on continu-
ously with a call for heat or fan; otherwise, it remains lit for
four seconds and turns off for one second. This flashing
sequence continues until the control is taken out of the test
mode. After thirty minutes, the control automatically resets
to the maximum frost factor setting. If system checkout is
not completed within thirty minutes, the test mode can be
extended by turning the dial back to one of the dial settings
and then returning it to the test mode. After the system has
checked out, return the control to the desired frost factor
setting. See the Adjustment section.
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