12
Ultra-Aire 90H Installer’s & Owner’s Manual
13
Ultra-Aire 90H Installer’s & Owner’s Manual
FOR HVAC INSTALLER ONLY
DEHUMIDIFIER DEACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
• The common wire on the thermostat transformer
(black) needs to be wired with the yellow wire from the
dehumidifier.
• The Yellow wire from the thermostat must be wired to the
AC off sensor terminal.
DEHUMIDIFIER ACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
• The common wire on the thermostat transformer
(black) needs to be wired with the yellow wire from the
dehumidifier.
• The Yellow wire from the thermostat must be wired to the
AC on sensor terminal.
5.2E Location
Install the remote control panel in a central area of the
structure where it will sense the relative humidity of the
structure accurately. Do not install the control panel where it
may not accurately sense the relative humidity such as near
HVAC supply registers, near exterior doors and windows, or
near a pool or spa.
5.2F Testing
After wiring connections have been made, verify connections.
First, make sure the white wire from the base unit is not
wired directly to the DEH 3000 control. There must be a
motorized damper in series with these connections, or the
white wire must not be connected to the control. Mis-wiring
may result in transformer damage.
After connections have been verified, this short test will
confirm proper wiring.
1. Install front cover of control; insert at top first, then bottom.
2. Plug in Ultra-Aire base unit. The control should power up.
3. Turn control on by pressing the ON/OFF button.
4. Engage dehumidification operation by adjusting RH
setpoint below ambient conditions.
a. Press RH until RH setpoint is 20%.
b. Verify Ultra-Aire fan and compressor operation.
c. Verify ventilation damper (if used) is closed.
5. Verify fan only operation by disengaging dehumidification and
operating fan:
a. Adjust RH setpoint above ambient conditions by pressing and
holding RH until set point is 80%.
b. Press fan button, then press again to toggle fan to “ON”
setting.
c. Release fan button, then press again to toggle fan to
“ON”
setting until
“FAN”
flashes on display.
d. Verify fan operation of Ultra-Aire. No compressor operation
should be noted, and ventilation damper (if used) should be
closed.
6. Verify ventilation damper operation (if installed) by disengaging
from operation and engaging ventilating operation.
a. Press and hold fan button until
“FAN”
flashes on display.
b. Release
“FAN”
button, then press again to toggle fan
operation off.
c. Press and hold
“VENT”
button until
“VENT”
flashes on display.
d. Release
“VENT”
button, then press again until
“OPEN”
is
displayed.
e. Verify Ultra-Aire fan operation and ventilation damper is open,
with no compressor operation.
7. If any functions are not working properly, verify wiring and
connections. Meters may be used across terminals to verify voltage.
If there is a concern about the base unit not operating properly, the
leads exiting the base unit may be connected and operation verified
according to the following matrix:
Wire connections
Operation
Yellow & Blue
Fan & Compressor
Yellow & Green
Fan Only
Do not test any other connections or transformer damage
may result. Refer to the appropriate Ultra-Aire base unit
manual for additional information.
