Analogue Inputs; Digital Outputs; User Interface - MAXA LWF 13 Benutzer- Und Installationsanleitung

4.4 ANALOGUE INPUTS

4.4.1 Analogue inputs/Probes
Index Description
Ambient temperature probe (always internal)
ST1
Probe mounted on board in wall-mounted installations.
Optional sensor; it inhibits operating of ST1 if present.
Used for regulating ambient temperature, it is mounted on the device in
ST2
ceiling-mounted or floor-mounted installations.
For information on connections, see diagram.
Optional probe; it enables Hot Start and Too Cool functions when present.
ST3 This sensor, which must be installed on the downstream side of the water
valve, is used to control the water temperature.
Note: If the measurement range is exceeded, the probe is considered faulty.
4.4.2 Temperature set point
Index Description
Potentiometer input: used to set the controller set point. Ranging from a
ST1 (selector knob)
minimum set point of 5 °C to a maximum set point of 35 °C.

4.5 Digital outputs

The digital outputs consist of 5 TRIACs
Indice Funzione
Control of Outlet Fan (see Operating of
Fan
fan on demand)
OUT1 Valve control
OUT2 Unserviceable (*)
(*) Warning: Do not connect any cable or device at this output.
4.6 Dip Switch
There are 5 Dip Switches on the back of the electronic board. Their functions are listed below:
Locate the dip switches on the rear of the board (see Fig. position C), then configure the system according to needs.
Dip Switch n. ON
1
x
2
x
x
3
Dip Switch n. 4
4-5 OFF
Notes:
(1) on request in heat mode; continuous in cool mode
(2) no Hot Start and Too Cool

5. USER INTERFACE

DRA-L has two main controls:
● Selector knob with +/-.
● 2 Sliders.
33
Description
Starts ventilation. The fan control cursor takes the phase to three different
terminals so that the 3 fan speeds can be manually selected.
Allows water to flow into the coil
-
OFF Description
x
floor-mounted device
ceiling-mounted device
x Ventilation on demand (1)
Continuous ventilation (2)
thermostat control on valve
x thermostat control on fan
5 Descrizione
OFF 2 pipe device without electric heaters
Probe range Measurement range
-50°C +110°C -50°C +55°C
-50°C +110°C -50°C +110°C
-50°C +110°C -50°C +110°C
Use
-105°C +105°C
from average point