Publicité
H1008A,D AUTOMATIC HUMIDITY CONTROL
H1008 AUTOMATIC
HUMIDITY CONTROL
OUT
OUT
G
FAN
CG
RELAY
CW
HEATING
W
RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
IN SINGLE TRANSFORMER SYSTEMS, JUMPER CG AND CW.
Fig. 9. Wiring for two-transformer system.
H1008 AUTOMATIC
HUMIDITY CONTROL
OUT
OUT
G
CG
CW
W
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. 10. Wiring for R7997, R8184, RA116 and RA117
oil systems.
SETTINGS
Adjustment
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
• Increase the dial setting for more humidity, or
• Decrease 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.
69-1185EF-3
COOLING
TRANSFORMER
L1
(HOT)
120V
L2
1
2
L1
(HOT)
120V
L2
1
HEATING
TRANSFORMER
M13307
SAIL SWITCH
(OPTIONAL)
2
BLOWER
CURRENT
SENSING
RELAY
3
EXTERNAL 24 VAC
TRANSFORMER
24 VAC
• Allow two days for the humidity level to subside before
making further adjustments.
• Once the frost factor is set, no further adjustment is
needed.
Table 1. Recommended Frost Factor Adjustment.
Humidity Level
Condensation on
windows.
Insufficient humidity.
The H1008A,D Automatic Humidity Control with
HumidiCalc+™ Software is designed to provide an
optimal 50°F (10°C) dewpoint. It automatically adjusts
the humidity level to prevent window frost or conden-
sation. The H1008D activates a ventilator or dehumidifier
to lower the indoor humidity level when the house dew-
point 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 by sensors located on the back of the control.
The frost factor–set by using the frost factor dial–allows
for variables in furnace oversizing, window insulation and
average daily outdoor temperature. The Automatic
Humidity Control with HumidiCalc+ Software requires
an initial adjustment period.
L1
SYSTEM STATUS
(HOT)
L2
1
The control has a green indicator light that flashes to
indicate system status. Flash frequency represents
system status. See Table 2 for status descriptions.
M13306A
System Status
Error
Standby
Test
Call for humidification/
dehumidification
Off
6
Recommended
Adjustment
Decrease the frost factor dial
by one setting.
Increase the frost factor dial
by one setting.
Table 2. System Status.
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
Publicité
