10
15
9.4 Operation screen in safety system of boiler return temperature
Fig.84. Screen of mixer operation (protection of the return temperature)
Boiler
temperature
Direction
of valve
move
Icons of
additional
data
Icon of
MIXER screen
Return
temperature
Mixer
pump
Preset
temperature
of the protection
of the return
F1=setting
the basic
parameters
F2=manual
operation
!
”
Direction of valve movement"
means opening the valve for the return water from the
CH system (respectively
- closing the return water and mixing it with the water from the boiler to
increase the return temperature).
If the valve drive runs, the arrow blinks. Lack of the arrow means in the next cycle the valve remains
motionless. Pressing the F1 button enables the change of the basic parameters of the mixer
:
# <62>"TempMIXER" - preset minimum temperature of the boiler return
↑
↓
By pressing the F2 button you can transition to the manual operation in order to test the correctness of
mounting and operation of the valve.
Icon of
MIXER and
MANUAL screen
Time to end of
manual
operation
Direction
of valve
move
F2=end of
manual
operation
F1=change of
direction of valve
move
Icon of
additional
data
!
The screen appears at the setting <60>(
”
ModeMIXER
”
)=RETURN
Fig.84A Screen of mixer operation (protection of the return temperature)- Manual mode
Manual operation is restricted in time. It ends automatically after 2 mins since last pressing
the F1 button
!
LEVEL OF PARAMETERS 2
PARAMETERS CAN BE CHANGED AT UNLOCKED PASSWORD
No
NAME
RANGE
SETTING
FUNCTION
2X
21
Temp-
ALARM-
BOILER
75...95
o
C
90
o
C
Boiler temperature at exceeding of which
the alarm activates
22
Temp-
STOP-
BOILER
(water)
20...45
o
C
35
o
C
Boiler temperature below which the automatic operation
is switched off, that is, the transition to the stop state
occurs. The switch-off happens if for 45min (parameter
<23> that state is active. Function is off with the flue gas
sensor
23
Time-
STOP-
BOILER
(water)
5...60min
45min
The time of keeping up the low boiler temperature after
which 'the transition to the stop state follows.
3X
blower
DEFAULT
boiler
30
-
ADJUSTABLE
-
31
10..100%
100%
32
1
…
10
o
C
2
o
C
38
2..10
o
C
5
o
C
39
0
…
100%
100%
ON/OFF
ADJUSTA-
BLE
REG1
REG2
Adjusting the blower control to the motor type:
ON/OFF-operation without adjustable rotation
ADJUSTABLE- typical motors
REG1- motors type RV-14
REG2 - motors type WPA-07
C
BLOWER
ontrol-
Max
Motor
Speed
-
-
Hysteresis
BLOWER
-
ZoneOf
Control
-
RangePID
Motor rotation that defines maximum efficiency of
the blower.
(e.g. if <31>=85% and on the display the efficiency
is 100% it means the motor reached the level <31>=85%
of its maximum power.
All the other settings regarding
the blower are in relation to this value
Hysteresis of turning on the blower operating
without adjustable rotation, that is, at <30>=ON/OFF
Ranges of boiler temperature that correspond to
adjustable rotation.
Impact of the PID algorithm on the control of
the blower. 0% means switching off the PID
24
Temp-
-
STOP-
BOILER
(flue gas)
Flue gas temperature of the damping threshold.
The controller detects the damping state if the flue gas temperature is
below <24> and active for the time <25>
Setting <24>=500 C turns off this function-
Transition between the phases is controlled by the water temperature
o
24d
Temp-
HYSTERESIS
(24)
The controller detects the fired-up state if the flue gas
temperature is above <24>+<24d>
25
Time-
STOP-
BOILER
(flue gas)
1. .90min
10min
36
o
C
250
o
C
MAXtemp.
of
FlueGas
If the flue gas temperature exceeds <36> then
the blower efficiency is reduced to <37>
Setting <36>=500 C turns off this function-
there
’
s no performance reduction of the blower
o
36d
10..90
o
C
20
o
C
Temp-
(36)
Hysteresis
Temperature drop of the flue gas below <36>-<36d>
causes the return to the normal operation.
37
Blower-
Rotations-
Reduction
If the flue gas temperature exceeds <36> the efficiency
of the blower is reduced to <37> (if it
’
s higher)
30... 500
o
C
50
o
C
10... 90
o
C
30
o
C
The controller detects the damped state if the flue gas
temperature is below <24> and that state is active
for the time <25>
100..500
10..90%
40%
