EUROSTER 11K CONTROLLER USER MANUAL
8
Controller treats the fireplace as shut down and closes its throttle if the fireplace
temperature has dropped down below
tE
. On the other hand the controller
resumes normal operation after the ignition phase as soon as the temperature
has risen above
tE
. If the put-out temperature is set too high, the fireplace
might be put out by the controller. If the put-out temperature is set too low, the
throttle might be opened unnecessarily.
tb
Standby temperature. Range: 40÷(60 or
OH
-5)°C. Standard value: 45°C.
Controller maintains that temperature while there is no demand for heat. The
parameter should be set for a minimum temperature at which fire at the
fireplace can be sustained.
OH
Critical temperature. Range: 60÷(90 or
AL
-1)°C. Standard value: 80°C. As soon
as the fireplace temperature has exceeded that threshold, the controller starts
emergency cool down procedure: throttle is closed and all available pumps are
engaged.
AL
Alarm temperature. Range: 85÷95°C. Standard value: 90°C. Should the
fireplace temperature exceed that threshold, acoustic warning signal is activated.
dF
Minimum difference between temperature of the fireplace and temperature of
the CH tank/buffer at which the tank/buffer is loaded. Range: 1÷20°C. Standard
value: 5°C.
On
Automatic controller activation. Range: 0÷1. Standard value: 1.
On
=0: the controller will not activate until the fireplace temperature rises above
the
OH
threshold.
On
=1: the controller will activate as soon as the fireplace temperature exceeds
the
tE
threshold.
OF
Automatic shut-down delay. Range: 0÷30 min. Standard value: 5 min. The
controller will shut down automatically
OF
minutes after the time when the
fireplace temperature has dropped down below the
tE
threshold.
OF
=0: the controller will never shut down automatically.
C1
S1 sensor offset. Range: -5÷5°C. Standard value: 0°C. That parameter may be
used to correct temperature readings.
C2
S2 sensor offset. Range: -5÷5°C. Standard value: 0°C.
SC
CH system layout. Range: 1÷3. Standard value: 1.
SC
=1: heat exchanger, 2 pumps (the simplest layout)
SC
=2: heat buffer, 2 pumps
SC
=3: DWH tank, heat exchanger, 3 pumps.
See detailed description in the SYSTEM LAYOUT section below.
Pr
DHW priority suspend period. Range: 0÷90 min. Standard value: 0 min.
Pr
=0: DHW priority disabled, CH and DHW pumps operate independently.
Pr
=30/60/90: DWH priority function will be suspended and the CH pump turned
on every 30/60/90 minutes for 10 minutes to prevent room temperature against
dropping down too much while the DHW tank is heated.
t1
P1 output state. Range: 0÷1.
t1
= 0: the output is inactive
t1
= 1: the output is activated
t2
P2
output state. Range: 0÷1
t3
P3
output state. Range: 0÷1
tP
THROTTLE
output state. Range: 0÷1
tA
AUX
output state. Range: 0÷1
c) Automatic verification of settings
The controller verifies the entered presets and automatically corrects settings which would
prevent its correct operation. This is accomplished two ways:
If the modified setting is a key parameter on which other less important parameters
depend, the entered modification automatically forces respective modification of all
dependent parameters. For example, if the alarm temperature is lowered, throttle
activation temperature is also automatically lowered.
