Technical data
Installation, user and maintenance manual – AY Condensing line, AY series
71
- CHECK THE VALUE OF PARAMETER "45".
Turn on the master power switch (GS).8.
Enter menu 1 (accessible to everyone) and check the setting of parameter "45".9.
10. If the value does not coincide with the value specied for the type of gas with
which the appliance is to be operated (see Table 6.1 Gas type identication va-
lues → 67), enter menu 4 and set parameter "45" to the correct value (see Table
6.1 Gas type identication values → 67). To enter menu 4 and make the re-
quired changes, refer to the instructions "Hydraulic parameter settings" in
Paragraph 4.9 PROGRAMMING OF HYDRAULIC PARAMETERS → 38.
If the setting of parameter "45" coincides with the value specied for the type of gas
with which the appliance is to be operated, skip step "10".
- CHECK/ADJUST THE COMBUSTION PARAMETERS.
Refer to Figures 6.1 Checking and adjusting the combustion parameters → 66 and 6.2
Gas valve → 67, and Table 6.1 Gas type identication values → 67.
You will need: appliance not powered up: master power switch and gas cock set to
OFF. external front panel (H) and side panel (N) removed. Necessary equipment and
materials. DDC (if installed) already connected electrically.
Now check the static and dynamic mains gas pressure: if the system has multiple ap-
pliances, this check (steps "11" to "18") 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 "11" to step "20".
Open the internal panel (E) by undoing its bolts.11.
Undo the bolt sealing the inlet gas pressure socket (Figure 6.2 Gas valve 12. → 67 -
detail D).
Connect the manometer to the gas intake (mains pressure).13.
Open the gas valve.14.
Read the value of the 15. 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.16.
Switch the appliance on. Wait for the appliance to stabilise (3 minutes from 17.
switching on) and then proceed to step "18".
If the appliance fails to switch on, remove the access cap (L) on the ow regulator
and use a athead screwdriver through hole (G) to turn the regulator screw 3 turns
counterclockwise. Replace the cap (L).
Read the 18. dynamic mains pressure on the pressure gauge and check that the
value is in the range specied at step "15". Now switch the appliance o.
If the dynamic mains pressure is not in the specied range (see Table 4.1 → 31), ma-
ke the checks specied in Step 1 of Paragraph 6.1 PROCEDURE FOR INITIAL ACTIVA-
TION → 63 and restore the fault.
Restore the appliance by screwing the gas intake seal screw back in.19.
Close the appliance's internal panel (E).20.