Ariston INTESA TP23, User Manual

Page: 28 / 52

28
1
A
B
8. GAS ADJUSTMENTS
The boiler can be converted to use either
methane (natural) gas (G20) or L.P.G. (G30
- G31) by an Authorised Service Centre.
The operations that m ust be performed are
the following:
1. Replace the jets on the main b urner
(see
table in section 8);
2. Adjust the maximum and minimum ther-
mal capacity values for the boiler
(see table in section 8 and 8.2
Adjusting the Gas Pressures);
3. Adjust the maximum thermal power set-
ting;
4. Adjust the soft-light f eature
(see table
below for recommended pressure);
5. Adjust the ignition dela y feature for the
heating system by adjusting the
jumper 2 as shown in
Section. 6.13 (can
be set from 0 to 2 mins .).
8.1 Changing the Type of Gas
CATEGORY
II2H3+
Model
Microcombi
Methane Gas
G20
Liquid
Butane Gas
G30
Liquid
Propane Gas
G31
Recommended
Soft-light
Pressure
(mbar)
TP 23
5 12 12
TP 30
4.5 12 12
Model CATEGORY II2H3+ Methane Gas
G20
Liquid Butane Gas
G30
Liquid Propane Gas
G31
TP 23
TP 30
Lower Wobbe Index (15°C;1013mbar)
MJ/m
3
h
Nominal Delivery Pressure mbar
Minimum Delivery Pressure mbar
45.67
20
20
80.58
29
28
80.58
37
36
TP 23
Main Burner: n. 14 jets (ø) mm
Consumption (15°C; 1013mbar) m
3
/h
Consumption (15°C; 1013mbar) Kg/h
Gas Burner Pressure
max - min
mbar
1.25
2.80
----
11.3 - 2.0
0.72
----
2.09
28.1 - 5.0
0.72
----
2.06
35.6 - 6.8
TP 30
Main Burner: n. 14 jets (ø) mm
Consumption (15°C; 1013mbar) m
3
/h
Consumption (15°C; 1013mbar) Kg/h
Gas Burner Pressure
max - min
mbar
1.35
3.49
---
11.5 - 2.2
0.80
---
2.60
26.8 - 5.3
0.80
---
2.56
34 - 6.5
8.2 Adjusting the Gas Pressures
Setting the minimum and the maximum power of the boiler
1. Check that the supply pressure and dynamic pressure to the
gas valve is a minimum of 20 mbar for natural gas.
2. To do this, loosen the screw “A”.
Fit the pipe of the pressure gauge to the inlet pressure con-
nection of the gas v alve “B” and check for the correct stand-
ing pressure, then oper ate the appliance and chec k for the
correct working pressure.
When you have completed this oper ation, replace the scre w
“A” securely into its housing to seal off the gas (chec k for
tightness).
3. To check the pressure supplied by the gas valve to the burner,
loosen the screw “C”. Fit the pipe of the pressure gauge to the
pressure outlet test point of the gas v alve “D”.
Disconnect the compensation pipe “D1” either from the gas
valve or from the sealed chamber.
4. Push the On/Off b utton to “ON” position -green light- and
ensure that the hot w ater temperature control knob is set to
maximum.
Turn on the boiler by running a hot water tap.
Adjust the 10mm nut “E” on the modureg to set the maximum
gas pressure, turn the nut clockwise to increase and anti clock-
wise to decrease the pressure until the required pressure is
achieved (see TABLE A page 28).