CeilAir DX Series Betreibershandbuch PDF herunterladen (Seite 42)

(Mar, 2012)

CeilAiR OHS Series Installation, Operation & Maintenance Manual

ir Technology Systems, Inc.

3.3.2 A-Tech-1.2 (See Figure 15)

The A-Tech-1.2 is a programmable thermostat that

represents one of the most advanced, solid-state,

microcomputer temperature controllers available. The

A-Tech-1.2 programmable thermostat provides the

user with the following features: dual stage cooling/

heating control, heat/cool/auto/off modes of opera-

tion, continuous/auto fan, day/time clock, setback

feature (accomplished through programming) and

temperature setpoint override. See control panel for

additional features.

The temperature setpoint can be overridden tem-

porarily or for an extended period. It is also recom-

mended to run the fan continuously especially during

cooling mode to enhance efﬁ ciency. The thermostat

may also be switched between Celsius and Fahren-

heit.

The A-Tech-1.2 thermostat is programmed in the

same way as the A-Tech-1.1. It has an additional

enhanced feature besides dual stage control. The

A-Tech-1.2 allows a different program for each day

of the week. The thermostat has been programmed

from the factory and it is suggested that your person-

al schedule be programmed. It can be programmed

for either a two events per day (Day and Night, only)

or four. It is factory programmed for four events. If a

two-day event is desired during installation, the cor-

rect No.1 dip switch selection must be made. Com-

plete the program schedule chart provided before

beginning programming.

NOTE

While programming you must press a button,

at least every 15 seconds or the thermostat

will revert to the operational mode. If this hap-

pens, simply repeatedly press the PROGRAM

button until you get back to where you left off.

The information you have already entered has

been retained.

If it is desired at any time to change the clock, sched-

uled times and/or temperatures the same procedure

is followed as setting.

NOTE

It is suggested that you set your desired pro-

gram times one hour before the time that you

will actually require the space to reach the

desired temperature. If you want the space to

be a certain temperature by 7:00 am, set the

morning temperature for 6:00 am.

3.3.2.1 Setting the Current Day and Time

STEP 1 - Press and release the CLOCK button.

Display will ﬂ ash Mo (Monday) or another day of the

week. Press the decrease or increase button

until the symbol for the current day ﬂ ashes on the

display.

Figure 15. A-Tech-1.2 Control Panel

3-5

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