Cointra CETI Serie Instructions Techniques page 67

CETI
3 SERVICE AND MAINTENANCE
All adjustments, start-up work and regular checks described be-
low must be performed by an authorized technician and in compli-
ance with applicable regulations. COINTRA does not accept any
responsibility for personal injury or material damages resulting
from work on the unit by people that are not authorized to do so.
3.1 ADJUSTMENTS
3.1.1 Gas conversion
COINTRA CETI water heater is only provided set for one of the
following two gases:
- G20 (METHANE, NATURAL GAS)
- G30 (BUTANE, LPG)
Depending on the model purchased, as indicated on the packag-
ing and on the technical data plates.
The unit can operate with NATURAL GAS (G20, G25) or with
LPG (G30, G31). The unit can be adjusted to work with a gas
that is different to that set in the factory, with the following steps
according to the type of gas conversion:
1 - Closing of the gas stopcock
2 - Conversion via the GAS TRANSFORMATION KIT
Except in changes between G30 and G31
3 - Opening of the gas stopcock
4 - FA parameter setting (type of water heater and gas)
5 - FH parameter setting -- Only in the CETI 10 model
6 - Gas valve calibration
Except in changes between G30 and G31
7 - Confirmation and exit of parameters setting
8 - Placing the new gas technical data label
1 - Closing of the gas stopcock
Before beginning any conversion:
• The gas stopcock must be closed.
• The water heater must then be connected to the new gas that
it is to be converted to.
2 - Conversion via the GAS TRANSFORMATION KIT
Except in changes between G30 and G31
The conversion for operation with a gas
that is different to that set in the factory
must be performed by an authorized
technician, using original parts and
in compliance with the applicable
regulations of the country of use.
All components damaged during the
conversion work must be replaced.
For every gas conversion in the CETI water heater, except in the
LPG model to change between G30 and G31 (from BUTANE
to PROPANE and vice versa, without a Kit), the appropriate
Transformation Kit must be purchased and installed, according to
the type of gas the water heater will work with, and the model in
litres of the CETI that we have:
TRANSFORMATION KIT
TO G20 GAS
CETI 10
TO G30 / G31 GAS (LPG)
CETI 12
TO G25 GAS
TO G20 GAS
CETI 15
TO G30 / G31 GAS (LPG)
CETI 17
TO G25 GAS
The following steps apply to install the Transformation Kit:
• Disconnect the CETI water heater from the power supply.
• Remove the burner's collector and mount the new one accord-
ing to the instructions of the Transformation Kit provided.
• Connect the CETI water heater to the power supply.
3 - Opening of the gas stopcock
Once the water heater has been connected to the new gas (and
transformed with the Kit if it proceeds), the gas stopcock must be
opened.
4 - FA parameter setting (type of water heater and gas)
A simple setting must be made on the electronics; simply config-
ure the FA parameter correctly. This indicates the water heater's
model type, that is, the litres and type of gas setting:
• Set the water heater in STANDBY using the Standby key.
• Activate the parameter list by pressing the ECO key for 5 sec-
onds until PP symbol appears on the display.
• Touch the Standby key. The first FA parameter appears.
• Touch the Standby key in order to enter into the configura-
tion of the water heater model.
• Touch the + or – keys to set the correct FA value, according
to the water heater model and type of gas (see Table 3.5.1).
• Touch the Standby key to confirm the configured FA value.
The FA symbol appears.
These steps always apply for the following 2 cases (A and B):
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:
A73023712 - Rev. 00 - 2024-07
CODE
VR83000280
VR83000290
VR83000300
VR83000250
VR83000260
VR83000270
67
EN