601
21
Burner Pressure C.H. and D.H.W.
8.6
To Range Rate the Boiler C.H. (not required on standard installations).
The boiler can be range rated for an output from 9.7 kW up to 23.3 kW. When the boiler is supplied
it is factory set at the maximum output 23,3 kW.
Procedure
a. Release the control panel fixing screws (fig. 30) and lower panel.
b. Loosen the screw in the burner pressure test point (fig. 22) and attach a gauge.
c. Switch on the electricity supply to relight the main burner.
Fig. 22
Balance tube
Black cable
White cable
Modureg
Gas valve
Test point burner pressure
Fig. 23
Fig. 24
Test point inlet pressure
0
2
4
6
8
10
12
14
16
18
20
22
9.7
12.8
23.3
28.6
mbar
12
1
TR1
X4
X6
2
3
4
X2
RY1
X1
2AT
230V
50Hz
1
11 10
7
2
6
3
5
12
9
10
1
2
P1
X3
6
5
3
4
1
F1
9 8 7 6 5 4 3 2 1
X8
1
2
3
4
5
6
7
8
9
X5
1
2
X7
JP4
13
L7
RY2
RY4
JP1
P2
P2
P1
MIN
MAX
MIN
MAX
Btu/h x 1000
Note 1 - Modulation is available on central heating, so
the procedures must be carried out while the system is
relatively cold. Recheck boiler thermostat is set to
maximum.
d. Adjust the potentiometer P1 on the PCB (fig. 24) in the
control panel until the required burner pressure is obtained
(Anticlockwise to reduce the pressure).
Note 2 - The range of inputs with corresponding burner
pressure is given on the Data badge which is situated behind
the top front panel. Further informations is on (fig. 23).
e. With the pressure set, turn off the electrical supply and
mark the set input on the Data badge (with sticker
supplied).
Burner Pressure C.H. and D.H.W.
P1 = C.H. range rating to be set on site
P2 = D.H.W. temperature (factory set, not to be adjusted)
P1 Adjust with screwdriver!
Pressure
Minimum
Maximum
settings
mbar
mbar
Natural Gas
2.7
14.5
L.P.G.
7.9
36.0
Summary of Contents for optima 601
Page 6: ...601 6 Boiler Flow Diagram Fig 2...
Page 17: ...601 17 Fixing points Lift here Fig 15 Fixing screws Fig 16 Fig 17...
Page 29: ...601 29...
Page 30: ......
Page 31: ......
