REMKO ATR-3 - Manual (Page 4)

4
Differential temperature control 2 sensor operation
The ATR-3 electronic clock thermostat gradually controls the speed of
REMKO DVL ceiling fans between 1 and a maximum of 14 and controls
a warm air heater.
The unit works with two sensors: a room temperature sensor at operat-
ing height and a ceiling temperature sensor. Unused warm air that rises
to the ceiling in high rooms is measured by the ceiling temperature sen-
sor.
If the room temperature falls below the set target temperature
(adjustment knobs A und B) and, at the same time, the ceiling tempera-
ture is above the room temperature by a set differential value
(adjustment knob C), the REMKO DVL ceiling fans start running and
transport the warm air down. The warm energy from the ceiling area is
can be used again in the work area.
If the difference in temperature increases, the fan speed also increases
up to the maximum speed. The minimum and maximum fan speeds are
adjustable (adjustment knobs F and G). The fan performance is dis-
played by indicators (M) on the display of the weekly clock timer (K).
If the room temperature falls by a specific, adjustable value (adjustable
knob E) below the target value, the heat also switches on. The operating
mode is displayed by a LED (N)
A digital weekly clock timer with power reserve makes it possible to pro-
gram heating and cooling off periods.
Proportional control 1 sensor operation
To meet special requirements, the unit can also be used for pure propor-
tional control. In this case, the “Heating” and “Cooling” operating modes
may be selected.
In the 1 sensor mode, only the room temperature is measured. If the tar-
get value of the room temperature goes above or falls below the value
set on the control mechanism Xp (D), the ceiling fans start running.
If, during “Heating” mode, the room temperature falls by a specific, ad-
justable value below the target temperature, the heat also switches on.
If the heating relay is not regulated during “Cooling” mode, the air is only
circulated.
In the "Setting the Functions" menu, the operator can switch from dif-
ferential temperature control to proportional control and from heating to
cooling is performed (see page 9).
The second sensor does not have a function. It can be used as a place
to perform measurements (display for 3 seconds after pressing the SET
program button).
Functionality