FOR HVAC INSTALLER ONLY AND HOMEOWNER
The ventilation indicator
“
O
”
will be displayed whenever the unit
is ventilating. The fan operation indicator
“
O
”
will also be lit.
There are three damper operation modes,
“OPEN –
HOLD,”
“CLOSED – HOLD”
and
“PROGRAM”
(denoted by
“ON TIME”
–
“OFF TIME.”
Refer to section 3.8). With the damper in the
“OPEN –
HOLD”
mode, the damper will be open and the fan of
the system will be operating in order to introduce fresh air into
the space. Use this mode for continuous fresh air ventilation. The
fan is always on when the damper is open. When in
“CLOSED
– HOLD”
mode, the damper will not open and the system will not
ventilate.
When in the “program” mode, the control will operate the damper
and fan (ventilate) according to the programmed ventilation
schedule (See Section 3.8).
To set the damper operation:
1. Press the
“VENT”
button. The current setting will begin to
flash on the display. Release the button.
2. Press the
“VENT”
button again to toggle between
“OPEN,”
“CLOSED”
and
“PROGRAM.”
3. Leave the control alone for 10 seconds to select the indicated
damper mode and return to
“HOME.”
5.3H Intermittent or Programmed Ventilation
The system will operate the ventilation function according to the
current ventilation program. The control needs to be programmed
to turn the ventilation function on and off at the desired intervals.
This is done by programming the ventilation timer.
There are two programs available for ventilation Monday
through Friday. There are also two programs for Saturday and
Sunday. No other choice of days is available.
Each program has:
• A
“START”
time of day when the ventilation schedule
begins.
• An
“OPEN FOR”
duration for the amount of time the
damper stays open in 5 minute intervals, from 0 to 60.
• A
“CLOSED FOR”
duration which closes the vent for a
specified time in 5 minute intervals from 0 to 60.
Example:
1. Press
“PROGRAM ENTER”
button. The following menu
appears:
2. Using the up/down RH buttons, select
“PROGRAM.”
The
following menu appears:
You can select from:
“MON-FRI”
or
“SAT-SUN”
for separate weekday/weekend
schedules or
“MON-SUN”
which gives you equal weekday/
weekend schedules.
Menu when you select
“MON-FRI”
or
“
S
AT-SUN”:
1. Enter the starting time for weekdays using the up/down
RH keys to change the time.
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Ultra-Aire 90H Installer’s & Owner’s Manual
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Ultra-Aire 90H Installer’s & Owner’s Manual
