2. FIRST START-UP
2.1.4. TOTAL CALIBRATION OF THE GAS
VALVE
›To go to the parameter 'q01', which corresponds
at the minimum power value, press the 'key
'.
In case of replacement of the gas valve or the electronic board,
proceed with the total calibration of the gas valve as follows:
›Check that the gas pressure read on
›Remove the front cover of the water heater
(see chapter 'ACCESS TO WATER HEATER');
' is '
'of the sanitary
is
›Access parameter 'P20', following the
procedure described in the chapter “ACCESS AND
PROGRAMMING PARAMETERS”, and set the parameter
value to '1'.
'to exit the mode
›Disconnect and restore power to the water heater,
or alternatively access parameter 'P20',
following the procedure described in the chapter
“ACCESS AND PROGRAMMING PARAMETERS”, and set the
parameter value to '0'.
›If the flame does not ignite or is not detected,
the flame symbol does not appear on the display and it is not
possible to enter the parameter. You need to fix the problem
and restart the procedure.
›Close the gas tap, remove the
pressure gauge from the gas valve pressure point and tighten
the screw;
›To change the parameter value press
the keys'
' is '
'of the sanitary
. For each
change it is necessary to wait 10 seconds for a stable
pressure. Parameter 'q02' is stored automatically.
›Open the gas tap, turn it on
water heater and make sure there is no gas leak.
29
SF 14 EVOLUTION NOx - RAD - ENG - Manual - 2009.1_HDIMS13_firm.05_R9
2Check and calibrate the pressure g
ias_water heater_HDIMS13_firm.05
›Insert a digital pressure gauge into the socket
gas outlet pressure 'B' (fig. 1), after having completely
unscrewed the screw inside.
pressure gauge complies with the provisions of the chapter
" THERMAL
FLOW / GAS PRESSURE DIAGRAM ".
›Switch on the water heater and make sure it does not
there is a gas leak.
> Press the button '
to exit the mode to modify the value of
'q02'.
›By pressing the '
It is possible to adjust the value of parameter 'q01'. For
each change it is necessary to wait 10 seconds for a
stable pressure. Parameter 'q01' is stored automatically.
> Press the button '
to change the value of 'q01'.
›Parameters 'q01' and 'q02' can be checked again
pressing the 'key
'. If it was necessary
correct them, repeat the above procedure.
›Exit the parameters menu and activate the mode
for automatic setting of modulation values by pressing
simultaneously
the keys'
'of power
is '
', in
the display will show “Au-to” (alternating).
>
›If the flame is lit, the display shows 'q02',
which corresponds to the maximum power value.
›Check that the gas pressure read on
pressure gauge complies with the provisions of the chapter
“THERMAL FLOW / GAS PRESSURE DIAGRAM”.
Exit the setting mode
automatic modulation values by pressing
simultaneously the '' power buttons
&
Summary of Contents for SF 14 EVOLUTION NOx
Page 23: ......
