CeilAir CW series Betreibershandbuch PDF herunterladen (Seite 42)

(©July, 2008)

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 operation,

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

(accomplished through programming) and tempera-

ture setpoint override. See control panel for additional

features.

The temperature setpoint can be overridden tempo-

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

mended to run the fan continuously especially during

cooling mode to enhance efficiency. 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 personal sched-

ule 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 correct No.1 dip

switch selection must be made. Complete 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 happens,

simply repeatedly press the PROGRAM button

until you get back to where you left off. The in-

formation 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 de-

sired temperature. If you want the space to be

a certain temperature by 7:00 am, set the morn-

ing 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 flash Mo (Monday) or another day of the

week. Press the decrease or increase button

until the symbol for the current day flashes on the

display.

Figure 15. A-Tech-1.2 Control Panel

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