Settings; System Status - Honeywell H1008A Product Data

H1008 AUTOMATIC
HUMIDITY CONTROL
OUT
OUT
G
CG
CW
W
24 VAC
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2 OPTIONAL SAIL SWITCH IS MONITORING THE OUTPUT AIR
OF THE BLOWER.
3
CURRENT SENSING RELAY IS MONITORING THE FURNACE
BLOWER MOTOR.
Fig. 11. Wiring for R7997, R8184,
RA116 and RA11 Oil Systems.

SETTINGS

Adjustment
The H1008A,D Automatic Humidity Control with
HumidiCalc+™ Software is designed to provide an optimal
50°F (10°C) dewpoint and automatically adjusts the humidity
level to prevent window frost or condensation. The H1008A,D
activates a ventilator or dehumidifier to lower the indoor
humidity level when the house dewpoing rises above 58°F.
Outdoor temperature is inferred (without the need for an
outdoor sensor), or measured (with optional outdoor sensor)
by the HumidiCalc+™ Software. Indoor humidity and
temperature information is measured from sensors located on
the back of the control. The frost factor, set by using the frost
factor dial, allows for variations in furnace oversizing, window
insulation and average daily climate temperature. The
Automatic Humidity Control with HumidiCalc+™ Software
requires an initial adjustment period. To adjust the frost factor,
set the frost factor dial to 10 and use Table 1 to adjust the
frost factor, only one setting at a time, increasing the dial
setting for more humidity, or decreasing the setting if moisture
starts to build up on the inside of your windows. For more
precise humidity adjustments, set the frost factor between the
dial settings. Allow two days for the humidity level to subside
before making further adjustments. Once the frost factor has
been set, no further adjustment is needed.
Table 1. Recommended Frost Factor Adjustment.
Humidity Level
Condensation on
windows
Insufficient humidity
SAIL SWITCH
(OPTIONAL)
2
BLOWER
CURRENT
SENSING
RELAY
3
EXTERNAL 24 VAC
TRANSFORMER
L1
(HOT)
L2
M13306A
Recommended Adjustment
Decrease the frost factor dial by
one setting.
Increase the frost factor dial by
one setting.
H1008A,D AUTOMATIC HUMIDITY CONTROL

SYSTEM STATUS

The control has a green indicator light that flashes at varying
frequencies to indicate system status. See Table 2 for status
descriptions.
Table 2. System Status.
System Status
Error
Standby
Test
Call for
humidification/
1
dehumidification
Off
Error Status
To troubleshoot the system when fault status is indicated:
— If an outdoor temperature sensor is not used:
— First check to ensure that the OUT terminals are
properly shorted together.
— Then cycle power to the device. If the control
continues to flash in the error mode, replace the
humidity control.
— If an outdoor temperature sensor is used, disconnect it,
short the OUT terminals together, and cycle power. If the
error status remains, replace the humidity control. If the
error status is eliminated, replace the outdoor
temperature sensor.
Control enters the error mode if any sensor reads out-of-
range. See Table 3.
Table 3. Error Messages.
Sensor
Indoor Temperature reads below 45°F or greater
temperature than 120°F.
RH sensor RH reads 0 or 100%.
Outdoor Temperature reads less than -40°F or
temperature greater than 120°F.
OUT terminals At powerup, if sensor is present and later
opens or shorts.
At powerup, if sensor terminals are jumped
and later are open.
7
Flash Frequency
1/8 second on, 1/8 second off.
1 second on, 1 second off.
4 seconds on, 1 second off. Steady
on with call for heat or fan.
Steady on.
Off.
Error Indicated When...
68-0207—3