30
Adjustment info
fig. 30
1
EVE 05 CTN 24 F - EVE 05 CTN 24 - EVE 05 RTN 24
Tipe of
gas
Output
min. - max
(kW)
Input
min. - max
(kW)
Supply
pressure
(mbar)
No. of
Nozzles
Ø
Diaphragme
(mm)
Natural gas(G20)
Propan (G31)
10,17 - 24,0
10,17 - 24,0
11,5 - 26,5
11,5 - 26,5
20
37
12
12
Ø
Nozzles
(mm)
-
-
EVE 05 CTFS 24 F - EVE 05 CTFS 24 - EVE 05 RTFS 24
9,9 - 24,2
9,9 - 24,2
11,5 - 26,5
11,5 - 26,5
20
37
12
12
-
-
1,25
0,80
2,7
6,2
13,3
33,0
1,22 m³/h
0,89 kg/h
2,80 m³/h
2,06 kg/h
1,30
0,80
2,3
6,2
12,0
33,0
1,22 m³/h
0,89 kg/h
2,80 m³/h
2,06 kg/h
Gas nat. (G20)
Propano (G31)
fig. 31
JP1:
For nat. gas boilers, the jumper is
on
NAT.
For LPG boilers, the jumper is on
LPG
.
LPG
JP1
NAT
LPG
NAT
The pressures at the burner indicated in the following table must be checked after the boiler has been operating for 3 minutes.
NOZZLES - PRESSION - DIAPHRAGME - CONSUMPTION TABLE
max.
min.
(mbar)
max
(mbar)
min.
Burner pressure
Tipe of
gas
Supply
pressure
(mbar)
No. of
Nozzles
Ø
Diaphragme
(mm)
Ø
Nozzles
(mm)
min.
(mbar)
max
(mbar)
Burner pressure
2.7 - MODIFICATION FOR
OTHER GASES
The boilers are manufactured for the type of
gas specifically required upon order.
Any subsequent conversion must be perfor-
med by qualified technicians who will use the
kits supplied by
Unical
and perform the con-
version and required adjustments for correct
preparation of the boiler for use.
To convert the boiler from one type of gas to
another proceed as follows:
for conversion from natural gas to LPG
-
remove the main burner;
-
disassemble injectors of the main burner
and replace them with those with a diame-
ter corresponding to the new type of gas
(see table “INJECTORS - PRESSURES”);
-
reassemble the main burner;
-
position the jumper on the modulation PCB
in the panel board as shown in fig. 31
-
remove plug
‘’A’’
(fig.28) on the gas valve
and fully tighten max pressure adjustment
screws
‘’B’’
-
check the pressure value upstream the gas
valve (see table “INJECTORS - PRESSU-
RES”) and adjust the pressure of the bur-
ner as indicated in section “ADJUSTING
THE BURNER”
-
check that the burner is functioning pro-
perly;
-
check that there are no gas leaks.
-
tighten the plug
”A”
(fig.28) of the max
pressure adjustment screw
-
when the conversion is completed, fill in
the label supplied in the kit with the infor-
mation required and stick it onto the boiler
alongside the data plate.
for conversion from LPG to natural gas
-
remove the main burner;
-
disassemble injectors of the main burner
and replace them with those with a diame-
ter corresponding to the new type of gas
(see table “INJECTORS - PRESSURES”);
-
reassemble the main burner;
-
position the jumper on the modulation PCB
in the panel board as shown in figure 31;
-
remove plug ‘
’A’’
(fig.28) on the gas valve
-
check the pressure value upstream the gas
valve (see table “INJECTORS - PRESSU-
RES”) and adjust the burner pressure as
indicated in section “ADJUSTING THE
BURNER”;
-
check that the burner is functioning pro-
perly;
-
check that there are no gas leaks.
-
tighten the plug
“A”
(fig.28) of the max
pressure adjustment screw;
-
when the conversion is completed, fill in
the label supplied in the kit with the infor-
mation required and stick it onto the boiler
alongside the data plate.
Gas
consumption
max.
min.
Gas
consumption
Output
min. - max
(kW)
Input
min. - max
(kW)
