Cointra CETI Serie Instructions Techniques page 69

CETI
12 To adjust the P2 parameter, touch the + or – keys on the
panel until the gauge shows the Minimum nominal Pressure.
Wait 10 seconds for the pressure to stabilize. If the gauge
shows a different value to the minimum nominal pressure, re-
duce the P2 parameter value in steps with the – key. After
each change, wait 10 seconds for the pressure to stabilize.
If the gauge shows the same value as the Minimum nominal
Pressure, confirm it with the Standby key. The P2 symbol ap-
pears.
13 To complete and exit the parameters calibration process,
touch the + key until the last qU symbol appears.
14 To confirm from this final "parameter", the Standby key must
be touched. The water heater returns to STANDBY.
15 Disconnect the gauge.
16 Touch the Standby key again to set the water heater OPER-
ATIONAL.
3.1.3 Electronic board replacement
When replacing the electronic board, the following additional set-
tings must be made:
1 Remove the power supply.
2 Replace the electronic board and restore the power supply.
3 Set the water heater in STANDBY using the Standby key.
4 Activate the parameter list by pressing the ECO key for 5 sec-
onds until PP symbol appears on the display.
5 Touch the Standby key. The first FA parameter appears.
6 Touch the Standby key in order to enter into the configura-
tion of the water heater model. By default, in the new board it
will be "1".
7 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).
8 Touch the Standby key to confirm the configured FA value.
The FA symbol appears.
9 FH parameter setting -- Only in the CETI 10 model
• Only in the CETI 10 model, after confirming its FA value,
touch the + key twice and the FH parameter appears.
• Selected FH, touch the Standby key in order to enter into
the configuration of its FH value.
• Touch the + or – keys to set the FH value according to the
type of gas of the CETI 10 model, as indicated accordingly
in Table 3.5.1.
• Touch the Standby key to confirm the configured FH value
in the CETI 10 model. The FH symbol appears.
10 To complete and exit the parameters setting, touch the + key
until the last qU symbol appears.
11 To confirm from this final "parameter", the Standby key must
be touched. The water heater returns to STANDBY.
12 Touch the Standby key again to set the water heater OPER-
ATIONAL.
3.2 COMMISSIONING
Commissioning of the water heater must
be performed by a trained, specialized
technician.
Checks that must be performed during
the first ignition, after maintenance work
which requires the unit to be disconnected
and after every intervention on the unit's
safety devices or components.
3.2.1 Before turning the water heater on
• Check the tightness of the gas installation carefully for leaks on
the connections using a soap and water solution.
• Fill the hydraulic installation and check that there is no air in
either the unit or the installation.
• Check that there are no water leaks in the installation or the
unit.
• Check that the connection to the electrical system and the
grounding are correct.
• Check that the gas pressure is correct.
• Check that there are no flammable liquids or materials near the
water heater.
• Do not place the water heater on the floor with the connections
facing down, so the connections are not damaged.
3.2.2 Checks during operation
• Turn the unit on.
• Make sure the gas and water systems are tight.
• Check the efficiency of the air and flue gas ducts while the wa-
ter heater is operating.
• Check that the gas valve modulates correctly.
• Check that the water heater ignites easily by doing a few on
and off tests.
• Check that the fuel consumption indicated on the meter match-
es that shown in the Technical Data Table, Section 4.3.
3.3 MAINTENANCE
3.3.1 Regular check
In order for the unit to operate correctly, an authorized technician
must perform an annual inspection, checking that:
• The control and safety devices (gas valve, flow switch, etc.)
work correctly.
• The exhaust vent is perfectly efficient.
• The air and flue gas ducts and terminal are free of obstacles
and leaks.
• The burner and the exchanger have no dirt or deposits. Do not
use chemicals or steel brushes to clean them.
• The electrode is free of deposits and properly positioned.
• The gas and water systems are perfectly tight.
• The gas delivery and operating pressure values are as indicat-
ed on the tables.
A73023712 - Rev. 00 - 2024-07 69
EN