Gas Valve Calibration - Cointra CETI Bajo NOx Instrucciones De Uso

A. Gas conversion from G30 to G31, Butane to Propane and vice
versa (from G31 to G30, Propane to Butane)
If you have purchased the CETI LPG model, which will be preset
at the factory to G30 (Butane), to convert it to G31 (Propane)
the "FA" parameter must simply be set, which in this example
would be the following setting:
Model:
From factory value, G30:
to the new value, G31:
according to the litres of the water heater model, as shown in the
parameter table (see Section 3.5.1). To convert the other way,
always with the CETI LPG model, from G31 to G30, the process
would be the same up to this point, changing the FA parameter
with the corresponding value.
In this case, after changing the FA parameter no more changes
must be made on the electronics, so you can continue by tou-
ching the " + " key until you reach the last "qU" parameter. From
this final parameter, you must confirm and leave by touching
the Standby key.
B. Gas conversion with Transformation Kit
If the gas conversion has been performed by converting the water
heater, the FA parameter must also be set first, according to
the gas that the CETI water heater will work with:
Model:
- Transformed to G20:
- Transformed to GLP (G31):
(G30):
- Transformed to G25:
and according to the litres of the water heater model, as shown in
the parameter table (see Section 3.5.1).
In this case, after changing the FA parameter the gas valve must
be calibrated, via consecutive parameters to FA.
4 - Open the gas valve
After confirming the new FA parameter value the water heater is
already set for the new gas and the gas valve can be opened.

5 - Gas valve calibration

The gas valve must be calibrated for every gas conversion on the
CETI that has been converted with the corresponding Kit (that is,
for every conversion except the LPG model, which converts
from G30 to G31 and vice versa).
For this follow Section 3.1.2 entirely to perform this step cor-
rectly.
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EN
10 L / 12 L / 15 L / 17 L
3 / 3 / 8 / 13
2 / 2 / 7 / 12
10 L / 12 L / 15 L / 17 L
1 / 1 / 6 / 11
2 / 2 / 7 / 12
3 / 3 / 8 / 13
4 / 4 / 9 / 14
A73023711 - Rev. 00 - 2022-10
6 - Placing the new gas technical data label
To show that the gas conversion has been correctly completed,
place the new adhesive technical data label on the water heater's
casing, replacing the one that came from the factory with the new
one:
- Additional G31 gas label which comes with your CETI LPG (for
conversions from G30 to G31).
- Corresponding gas label (G20, G30, G31, G25) which comes
with the corresponding Transformation Kit.
3.1.2 Gas valve calibration
This must only be performed in the following cases:
- GAS VALVE REPLACEMENT
- ELECTRONIC CARD REPLACEMENT
- GAS CHANGE WITH TRANSFORMATION
The gas valve (with integrated modulating actuator) is not ca-
librated mechanically; the minimum and maximum capacity is
adjusted electronically via 2 parameters:
Par. Description
PH Total Maximum Pressure (entire burner)
P2 Minimum Pressure (burner minimum section) 20 - F0
1 Check that the supply pressure according to the type of
gas complies with that shown on the Technical Data Table
(see Section 4.3).
2 On the same Technical Data Table, check the Maximum
Pressure and Minimum Pressure values of your water he-
ater, according to the water heater model and type of gas,
to take them into account in the following steps.
3 Connect a gauge to check the outlet pressure of the gas valve.
4 Activate the parameter list by pressing the ECO key for 5 se-
conds until "PP" appears on the display. Touch the Standby
key and the first "FA" parameter appears.
5 ELECTRONIC CARD REPLACEMENT. If we are changing
the card, this first "FA" parameter, which indicates the
type of the burner model, must first also be configured
correctly.
6 To do this you must touch the Standby key and change the
value of the current parameter with the "+" and "–" keys,
according to the water heater model and its type of gas
(see Section 3.5.1 Parameter list). Once configured, con-
firm this initial "FA" parameter with the Standby key.
7 NOTE: In the CETI 10 model, when confirming "FA" after
replacing the electronic card, the value of parameter "FH"
must be manually configured with the corresponding one
in the table in Section 3.5.1 List of Parameters.
CETI
Range
20 - F0