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Mynute Green C.S.I. E - R.S.I. E
HTG curve (Qnheating)
6500
6000
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
6
8
10
12
14
16
RANGE RATED
This boiler can be adapted to the heating requirements of the sys-
tem, in fact it is possible to set the maximum delivery for heating
operation of the boiler itself:
- switch off the power supply
- setting the heating water temperature selector at the maximum
value
- remove the shell
- turning the instrument panel towards you
- unscrew the two screws of the small cover on the electronic
board to have access to the terminals
- insert JP1 jumper
- power up the boiler.
The display shows "ADJ" for about 4 sec.: it is then possible to
change the maximum heating value by means of the heating water
temperature selector and the CO button in order to set and confirm
the desired value.
The icon
will appear on the display.
Finish the procedure by removing the jumper JP1 to store the set
values.
Once the desired output (maximum heating) has been set, note the
value on the table on the back cover.
For subsequent controls and adjustments, refer to the set value.
The calibration does not entail the ignition of the boiler. By ro-
tating the heating setpoint selector knob, the value expressed
in hundreds (e.g. 25 = 2500 rpm) is automatically displayed.
The boiler is supplied with the adjustments shown in the table.
Depending on plant engineering requirements or regional flue gas
emission limits it is, however, possible to modify this value, refer-
ring to the graphs.
4.8 Gas conversion (fig. 22)
Gas conversion from one family of gases to another can also be
easily performed when the boiler is installed.
This operation must be carried out by professionally qualified
personnel. The boiler is designed to operate with methane gas
(G20) according to the product label.
It is possible to convert the boiler to LPG, using the special kit.
For disassembly, refer to the instructions below:
- switch off the power supply to the boiler and close the gas tap
- remove the housing
- remove the fixing screw from the instrument panel
- unhook and turn the instrument panel forwards
- remove the gas valve (A)
- remove the nozzle (B) inside the gas valve and replace it with the
nozzle from the kit
- refit the gas valve
- re-power the boiler and turn on the gas tap.
Adjust the boiler as described in the chapter entitled "Adjustments"
with reference to the information on LPG.
Conversion must be carried out by qualified personnel.
Once the conversion is complete, affix the new
identification label supplied in the kit.
If you need to convert Mynute Green 25 C.S.I. E - 25 R.S.I.
E (clapet inside) from natural gas to other gas types
you MUST remove the clapet and put the new gasket
contained into the conversion kit.
If you need to convert Mynute Green 25 C.S.I. E - 25
R.S.I. E from other gas types to natural gas you need to
regulate G20 values as follows:
14
Mynute Green 38 C.S.I. E
18
20
22
24
26
28
30
32
Heat output (kW)
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
6
8
10
34
36
38
40
Numbers of fan revolutions at slow start
Maximum number of fan rotation (CH-DHW)
Minimum number of fan rotation (CH-DHW)
4.9 Checking the combustion parameters (fig. 21)
Mynute Green C.S.I. E:
- Position the function selector on
- Turn the DHW temperature selector on
Wait until the ignition of the burner (about 6 seconds). The dis-
play shows "ACO", the boiler operates at full power heating.
- Remove the screw C and the cover E on the air box.
- Insert the probes of the analyzer in the positions provided on the
air box.
The flue gas analysis probe must be fully inserted as far
as possible.
- Check that the CO
value shown is different, change it as indicated in the chapter
entitled "Gas valve calibration".
MAXIMUM CO
25 C.S.I.
30 C.S.I.
38 C.S.I.
MINIMUM CO
25 C.S.I.
30 C.S.I.
38 C.S.I.
Mynute Green R.S.I. E:
- Position the function selector on
- Turn the DHW temperature selector on
Wait until the ignition of the burner (about 6 seconds). The dis-
play shows "ACO", the boiler operates at full power heating.
- Remove the screw C and the cover E on the air box.
- Insert the probes of the analyzer in the positions provided on the
air box.
The flue gas analysis probe must be fully inserted as far
as possible.
- Check that the CO
value shown is different, change it as indicated in the chapter
entitled "Gas valve calibration".
MAXIMUM CO
12 R.S.I.
15 R.S.I.
20 R.S.I.
25 R.S.I.
35 R.S.I.
CO s.a. curve (Qnheating)
12
14
16
18
20
22
24
26
Heat output (kW)
to switch off the boiler
values match those given in the table, if the
2
METHANE
2
GAS (G20)
9,0
9,0
9,5
METHANE
2
GAS (G20)
9,5
9,5
9,5
to switch off the boiler.
values match those given in the table, if the
2
METHANE
2
GAS (G20)
9,0
9,0
9,0
9,0
9,0
28
30
32
34
36
38
40
G20
rpm/min
3.400
rpm/min
5.600
rpm/min
1.800
.
LIQUID GAS
(G31)
10,0
%
10,0
%
10,5
%
LIQUID GAS
(G31)
10,0
%
10,5
%
10,5
%
.
LIQUID GAS
(G31)
10,0
%
10,0
%
10,0
%
10,0
%
10,0
%
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