Riello Condexa Pro3 Series User Manual

30
SETTING FUNCTIONING PARAMETERS
Voltage (Volt)
0123456789 1
0
Power (kW)
50
100
150
200
250
Fig. 31
The burner ignited when:
− Delivery temp. ≤ Setpoint_ch_high (Par.1) – Ch_high_hist_
on (Par.19)
− (Delivery temp. ≤ Setpoint_ch_low (Par.3) – Ch_low_hist_
on (Par.26))
The burner shuts off when:
− Delivery temp. > Setpoint_ch_high (Par.1) + Ch_high_hist_
off (Par.20)
− (Delivery temp. > Setpoint_ch_low (Par.3) + Ch_low_hist_
off (Par.27))
ANALOGUE TEMPERATURE INPUT, Par. 14=3 (Par. 22=3 for low tem-
perature circuits)
The following rules apply to high temperature (low temperature)
circuit demand:
0-2Vdc: no demand by the high temperature (low
temperature) circuit
2-9Vdc: the heat demand is converted into a power demand
for each Slave, using the algorithm PID_CH_high
(PID_CH_low). 2V corresponds to a setpoint equal to
T_Ch_high_foot, Par. 18 (T_Ch_low_foot, Par. 24), 9V to a
setpoint equal to SetPoint_Ch_high, Par.1 (SetPoint_Ch_
low, Par.3). The setpoint is calculated linearly between
2V and 9V. Hysteresis for the end of demand is 0.2V and
therefore demand is present above 2V and stops below
1.8V.
Setpoint
10
20
30
40
50
60
70
80
90
Voltage (Volt)
0123456789 1
0
Fig. 32
The burner ignited when:
− Delivery temp. ≤ Setpoint_ch_high (Par.1) – Ch_high_hist_
on (Par.19)
− (Delivery temp. ≤ Setpoint_ch_low (Par.3) – Ch_low_hist_
on (Par.26))
The burner shuts off when:
− Delivery temp. > Setpoint_ch_high (Par.1) + Ch_high_hist_
off (Par.20)
− (Delivery temp. > Setpoint_ch_low (Par.3) + Ch_low_hist_
off (Par.27))
MIX VALVE MANAGEMENT
The mix valve is controlled by the parameters:
− Mix_valve_step_open_time: Par.28 preset to 5s
− Mix_valve_step_close_time: Par.29 preset to 7s
− Mix_valve_interval_time: Par.30 preset to 5s
− Mix_valve_p_hyst: Par.31 preset to 2°C
− Mix_valve_still_hyst: Par.32 preset to 2°C
Before opening or closing, the valve waits the period of time set
in Par.30.
Opens if:
T_mandata_bassa < Setpoint_low – Par32
Closes if:
T_mandata_bassa > Setpoint_low + Par32
Within the interval, the valve remains in its current position.
If:
T_mandata_bassa < Setpoint_low – Par31
opens for a period of time equal to half the value set in Par. 28
If:
T_mandata_bassa > Setpoint_low + Par31
closes for a period of time equal to half the value set in Par. 29.
Time (s)
0
20
15105
Manifold temperature
-5
5
15
25
35
45
55
Fig. 33

Riello Condexa Pro3 Series Specifications

General

Brand	Riello
Model	Condexa Pro3 Series
Category	Boiler
Language	English