Installation, user and maintenance manual
– AY Condensing line, AY series
65
The appliance is supplied with all of its units already regulated for the type of gas for
which the appliance itself is set up. In this step, the combustion parameters must AL-
WAYS be checked and set.
The type of gas for which the appliance is set is given on the sticker on the internal
panel and on the appliance's original packaging.
To check and set the combustion parameters, proceed as follows, with reference to
Figures 6.1 Checking and adjusting the combustion parameters
→
66 and 6.2 Gas val-
ve
→
67 and Table 6.1 Gas type identification values
→
67.
You will need: appliance not powered up: master power switch and gas cock set to
OFF. outer front panel (H) removed. Necessary equipment and materials. DDC (if instal-
led) already connected electrically.
Open the internal panel (E) by undoing its bolts.
1.
Open the plant gas supply valve to the appliance and make sure that there is no
2.
smell of gas (indicating possible leaks).
In case of gas leaks, go back over Step 1 above and restore the system to compliancy.
Once you are sure there are no gas leaks, close the gas cock.
3.
Now check the static and dynamic mains gas pressure: if the system has multiple ap-
pliances, this check (steps "4" to "10") need only be done once, so long as it is done
with the appliance furthest from the mains connection; for the other appliances, skip
directly from step "3" to step "12".
Undo the bolt sealing the inlet gas pressure socket (D).
4.
Connect the manometer to the gas intake (mains pressure).
5.
Open the gas valve.
6.
Read the value of the
7.
static mains pressure on the manometer and check that
the value read is within the expected gas pressure range (see Table 4.1
→
31):
17 to 25 mbar for natural gas (G20);
•
25 to 35 mbar for LPG (G30 and G31);
•
Close the master power switch (GS) on the external electrical panel.
8.
Switch the appliance on. Wait for the appliance to stabilise (3 minutes from
9.
switching on) and then proceed to step "10".
If the appliance does not switch on, remove the side panel (N), remove the cap (L) and
use a flathead screwdriver through hole (G) to turn the flow regulator screw 3 turns
counterclockwise ; reinstall the cap (L) and repeat step "9".
Read the
10.
dynamic mains pressure on the pressure gauge and check that the
value is in the range specified at step "7". Now switch the appliance off.
If the dynamic mains pressure is not in the specified range (see Table 4.1
→
31), make
a note of the anomaly and, on conclusion of the procedure, notify the installation tech-
nician/user. In this case the user may not operate the appliance until the fault has been
resolved or the manufacturer's specifications satisfied (see Step 1 again).
Restore the appliance by screwing the gas intake seal screw back in.
11.
Close the appliance's internal panel (E).
12.
Fit a combustion products probe in one of the points provided fro this purpose
13.
on the external fumes equipment.
Switch the appliance on and wait for it to stabilise (3 minutes).
14.
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