28
7.10.1 CHECKING THE FAN SPEED
Locate the CO button (see Fig 40 pos SW1).
Select the main selector switch to the ON position, press the
CO button once, the display will then scroll through the fan
speeds along with the relevant icon.
7.10.2 THERMOREGULATION
To set the temperature regulation curve, locate potentiometer
(P3). By turning (P3), the curve is shown on the LCD display.
The user can adjust the temperature of the heating system
indirectly by changing the required room temperature from
between 15°C & 25°C, this will allow the PCB to recalculate
the system temperature required, the default temperature for
calculating the curve is 20°C.
The graph below can be used to determine the correct curve
setting.
REFERENCE
TEMPERATURE 15 °C
REFERENCE
TEMPERATURE 20 °C
REFERENCE
TEMPERATURE 25 °C
20 °C
25 ° C
15 °C
10
20
30
40
50
60
70
80
90
-20
-15
-10
-5
0
5
10
15
20
25
30
ROOM TEMPERATURE CURVE OFFSET
DELIVER
Y
TEMPERA
TURE
(°C)
EXTERNAL TEMPERATURE (°C)
Fig. 42
The boiler is supplied with the adjustments shown in the table. Depending on plant engineering requirements or regional fl ue gas emission limits it is, however,
possible to modify this value, referring to the graphs below.
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
COs.a. curve (Qnheating)
Heat output (kW)
800
1200
1600
2000
2400
2800
3200
3600
4000
4400
4800
5200
5600
6000
6400
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
HTG curve (Qnheating)
Heat output (kW)
Fan rotations (rpm)
CO emissions s.a. (p.p.m.)
Mynute
i20
Mynute
i30
1000
1400
1800
2200
2600
3000
3400
3800
4200
4600
5000
5400
5800
6200
0
4
8
12
16
20
24
28
32
36
40
HTG curve (Qnheating)
Heat output (kW)
Fan rotations (rpm)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
COs.a. curve (Qnheating)
Heat output (kW)
CO emissions s.a. (p.p.m.)
Summary of Contents for Mynute i20
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