Herz pelletfire, Operating Instructions Manual

Page: 57 / 96

Description of the menu navigation and adjustment values 11
Betriebsanleitung_pelletfire_Touch_Englisch_V1.2 57
Term Description Unit
Overview
  
External demand
Display, if the external foreign control loop makes a requirement over
the digital input or not:

When the indicator lamp lights up the external foreign control loop
makes a requirement over the digital input
-
Analog must
temperature
Display of the actual analogue must temperature °C
Status
  
Demand active Indication of the state of the external demand -
Analog Must Display of the actual analogue set temperature °C
Analog Must
Display of the actual analogue set temperature

The analog must temperature was calculated into a voltage with
the diagram in Figure 12
and the relation over Ohm’s law
mV
Settings
  
External must
temperature
Here you can set the (digital) external must temperature:

The boiler operates at a demand with a fixed temperature, as far
as the analogue must temperature is not higher
°C
Analog must active Activates the analogues setpoint setting -
Analog must
temperature 4 mA
Setting up lower limit of analogue set temperature at 4 mA (see
Figure 12)

If input is a analogue signal of 4 mA, the boiler runs with the set up
temperature
°C
Analog must
temperature 20 mA
Setting up upper limit of analogue set temperature at 20 mA (see
Figure 12).

If input is a analogue signal of 20 mA, the boiler runs with the set
up temperature
°C
Analog must
temperature max.
Setting up maximum of analogue set temperature °C
Analog must-
temperature min.
Setting up minimum of analogue set temperature °C
Line monitoring Activates the line monitoring (ON/OFF)
MODUL
Boiler Buffer Hot water tank Heating circuit Time mode
Solar
Hydr.compensat
Net pump Zone valve
Ext. requirement
addit. boiler