SERVICING AND MAINTENANCE INSTRUCTIONS
_
Parameter
11
setting:
MAXIMUM GAS PRESSURE SETTING - MAXIMUM HEATING OUTPUT SETTING
D
B
10
20
30
40
A
MANOMETRO
C
To check or modify the existing pressure value:
a.
Insert a manometer into the gas valve pressure point
B
(fig.1);
b.
Put ON / OFF button
1
in
OFF
position (
);
c.
Push pad
6
and
4
simultaneously and keep them pressed;
d.
Put ON / OFF button
1
in
ON
position
(
) and wait until the
display shows
-
;
P
0
e.
Release pad
6
and
4
;
Fig. 1
f.
Keeping pad
5
pressed, press pad
6
and select parameter no.
;
1
g.
Release service pad
5
,
press and release service pad
5
;
Gas valve VK 4105G
h.
The display
will show the parameter value to be set or modified;
i.
Press pad
6
to reach value
on display;
9
j.
Once the parameter value “
99
” has been reached, press and release service pad
5
to confirm the setting; the display will show
value
;
1
k.
Position ON/OFF button
1
in OFF position (
) and back to ON position (
);
l.
Open the hot water tap at the maximum flow and temperature to switch the boiler ON;
m.
The manometer inserted in the pressure point B (fig. 1) will show the maximum gas pressure
n.
If that value is different than the one stated in the data plate (see Gas Pressure adjustment table) modify it as follows:
o.
Remove the aluminium cap
A
(fig.1) and, with a screwdriver, turn the plastic screw;
p.
Turn clockwise to increase gas pressure and counter clockwise to decrease gas pressure;
q.
Once the maximum gas pressure has been adjusted screw aluminium cap A back to position onto the gas valve;
r.
Switch the boiler OFF by putting ON/OFF button
1
in
OFF
position (
);
s.
Remove the silicon pipe from the pressure point
B
(fig.1), close tightly the pressure point screw and make sure there are no gas leaks.
t.
Put ON/OFF switch
1
in ON position;
CONDENSING WALL-HUNG BOILER – TG05A062.A0505
30
