- Therma-Stor Ultra-Aire 100V OWNER'S MANUAL

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FOR HVAC INSTALLER ONLY AND HOMEOWNER

The ventilation indicator “

” will be displayed whenever the unit

is ventilating. The fan operation indicator “

” 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 “SAT-SUN”:

1. Enter the starting time for weekdays using the up/down

RH keys to change the time.

This example shows the damper in “PROGRAM” mode

(denoted by the schedule 15 minutes on, 5 minutes off).

The status of the damper is show here.

is open, blank is closed.

Ultra-Aire 100V Installer’s & Owner’s Manual