29
59970LTGBW7H016a
230 V
59970LTGBW7H017a
R
A
A
3. Switching the boiler on and setting the controls
•
Replace the fuse and switch on the 230 V power supply.
•
Set the controls to heat demand.
•
When 230v power is first applied to the boiler or after the
230v supply has been isolated for maintenance the boiler
will not start until it has fully completed its venting cycle
– this will take about 3 minutes during which time the dis-
play will show
f[ xx
alternating with
p[ xx
(where
xx
displays the software version number). This is not a
fault please, wait until the cycle is finished. Provided no
error codes appear during this time, the boiler will then start
to run if called for by the controls.
•
The boiler now starts to run. The operational status is shown
in the display. The normal operating status finally shows
0
in the display.
4. Checking/setting the gas/air ratio at full load
The Avanta 18v boilers are suitable for both natural gas and
propane firing. The boilers are supplied as standard set for
natural gas (H), therefore the following procedure must be car-
ried out BEFORE the boilers are fired and commissioned for
the first time on propane:
- adjust the fan speed (
for procedure see par.2.10.8, for val-
ues see table 05 and
table 07) and;
- adjust the gas/air ratio (
for values see table 05 and table
07
).
Setting values O
2
/CO
2
for natural gas
Boiler type
Fan speed (rpm)
O
2
CO
2
Full load
h3
*)
%
%
18v
approx. 3500
5.2
± 0.1
8.8
± 0.1
table 04 Setting values full load CO
2
and O
2
(front panel not
fitted)
Setting values O
2
/CO
2
for LPG (propane)
Boiler type
Fan speed (rpm)
O
2
CO
2
Full load
h3
*)
%
%
18v
Approx. 3200
5.1
± 0.1
10.5
± 0.1
table 05 Setting values full load CO
2
and O
2
(front panel not
fitted)
*) On forced full load, the 2
nd
digit indicates the operating code
59970LTGBW7H016
59970LTGBW7H017
