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DIP SWITCH DEFINITIONS
A-B (SYSTEM SETUP SWITCH #1):
HVAC FAN – OFF/ON (SYSTEM SETUP SWITCH #2):
WHL HOUSE / CONVERTIBLE (SYSTEM SETUP SWITCH #3):
VENT-AUTO / VENT-TIMED (SYSTEM SETUP SWITCH #4):
Reserved for future use.
Determines if the HVAC fan activates during a call for
dehumidification.
HVAC FAN-OFF
position. The dehumidifier will not
activate the HVAC fan during a call for
dehumidification; it will however activate the HVAC fan
for air cycling and ventilation.
HVAC FAN-ON
position. The dehumidifier will
activate the HVAC fan during a call for
dehumidification as well as for air cycling and
ventilation.
Default is
HVAC FAN-OFF
.
Determines if ventilation is restricted based on outdoor temperature.
VENT-AUTO
position. The dehumidifier will measure the outdoor
temperature (through sensor, part # 8052) to determine if the
ventilation damper will open. If the outside temperature is above
100°F or below 0°F the dehumidifier will not actuate the ventilation
damper terminals (VENT DAMPER). If the outside temperature is
between 0°F - 20°F, the dehumidifier will only actuate the ventilation
damper terminals (VENT DAMPER) when the HVAC system is making
a call for heat. The dehumidifier will energize the HVAC fan whether
or not the ventilation damper opens.
VENT-TIMED
position. The dehumidifier will actuate the ventilation
damper terminals (VENT DAMPER) regardless of the outdoor temperature.
The default position is
VENT-AUTO
.
Determines when the dampers are powered open or closed.
CONVERTIBLE
position. This is used for zoned dehumidification.
The damper (DEH) terminals are actuated when the HVAC equipment
is making a call for heat, cool or fan and the dehumidifier is making
an internal blower call for air sampling or dehumidification.
WHL HOUSE
position. This is used for central dehumidification. The
damper (DEH) terminals are actuated any time the dehumidifier is
making an internal blower call for air sampling or dehumidification.
The default position is
WHL HOUSE
.
SYSTEM CHECKOUT
1. Check the wiring to the HVAC equipment.
2. Rotate the main control knob clockwise to the “TEST” position.
3. If all is set up properly, the dehumidifier blower will turn on. The compressor will turn on after the dehumidifier blower has run
for 3 minutes. After 1 minute the dehumidifier blower and compressor will shut off (“TEST” mode only).
4. If the dehumidifier blower does not activate in TEST mode, refer to the Troubleshooting Guide.
5. For ventilation (optional) test, be sure that 24 VAC is applied in series with the Aprilaire
®
Normally-Closed Damper
(Model 6506) and connected to the “VENT DAMPER” terminals on the dehumidifier control.
6. Rotate the “CYCLE TIME” potentiometer clockwise to the “TEST” position.
7. If all is set up properly, the HVAC blower will turn on and the ventilation damper will open. Both should be audible to the
installer. The HVAC blower will remain on and the ventilation damper will remain open for 1 minute or until the dial is turned
from the “TEST” position, whichever happens first.
DO NOT
leave the CYCLE TIME in TEST.
8. If the optional ventilation damper or HVAC blower does not activate in TEST mode, refer to the Troubleshooting Guide.
