Ariston HS C 24 FF NG Installation And Servicing page 58

COMMISSIONING
Checking the gas settings
Remove the front casing and proceed as described below.
Supply pressure check
1. Loosen screw "1" (Fig. a) and insert the pressure gauge
connection pipe into the pipe tap.
2. Switch the boiler on at maximum
power, enabling the "Chimney sweep"
function.
Press the RESET button for 10
seconds, on the display appear
The supply pressure should correspond
to the value established in relation to the type of gas for which
the boiler is designed.
3. When the check is over, tighten screw "1" and make sure it is
securely in place.
4. The "flue sweep function" is automatically deactivated after
10 minutes or when the RESET button is pressed.
Checking the D.H.W. maximum power
1. To check the maximum power level, loosen screw "2" (Fig. b)
and insert the pressure gauge connection pipe into the pipe
tap.
2. Disconnect the air chamber compensation tube.
3. Switch the boiler on at maximum power, enabling the
"Chimney sweep"" function.
Press the RESET button for 10 seconds,
on the display appear
is foced to the maximum heating power.
Press the button 2
boiler at the maximum
On the display appear the icon
The supply pressure should correspond
to the value shown in the "Gas Settings"
table, in relation to the type of gas for which the boiler is
designed. If it does not correspond, remove the protective
hood and tighten or loosen the adjustment screw "3" (fig. c).
4. When the check is over, tighten screw "2" and make sure it is
securely in place.
5. Replace the cover protecting the modulator.
6. Reconnect the compensation tube.
7. The "flue sweep function" is automatically deactivated after
10 minutes or when the RESET button is pressed.
Checking the minimum power
1. To check the minimum power level, loosen screw "2" (Fig. b)
and insert the pressure gauge connection pipe into the pipe
tap.
2. Disconnect the air chamber compensation tube.
3. Switch the boiler on at maximum power, enabling the
"Chimney sweep" function.
Press the RESET button for 10
seconds, on the display appear
. The boiler is foced to the maximum
heating power. Press the button 2
, on the display appear the icon
. The boiler is forced to the minimum
power.
Disconnect a wire from the modulator
(fig. d); the supply pressure should
correspond to the value shown in the "Gas Settings" table, in
relation to the type of gas for which the boiler is designed. If it
does not correspond, tighten or loosen the adjustment screw
"4" (fig. d).
4. When the check is over, tighten screw "2" and make sure it is
securely in place.
58 /
.
. The boiler
to forced the
DHW power.
.
(a)
Gas valve
Vanne gaz
1
845
1
1
1
(b)
Gas valve
Vanne gaz
845
2
2
2
2
(c)
Gas valve
Vanne gaz
845
3
3
3
3
(d)
Gas valve
Vanne gaz
845
4
4
4
5. Reconnect the modulator wire.
4
6. Reconnect the compensation tube.
7. The "flue sweep function" is automatically deactivated after 10
minutes or when the RESET button is pressed.
Gas valve
o
Vanne gaz
1
o
2008N
1
1
1
Gas valve 2
o
Vanne gaz
2
o
2008N
2
2
Gas valve
o
Vanne gaz
o
2008N
3
3
3
3
Gas valve
o
Vanne gaz
o
2008N
4
4
4
4