7
INITIAL ACTIVATION AND MAINTENANCE
Installation, user and maintenance manual – AY Condensing line, AY Series
51
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control of switching on and off of the appliance not via the DDC but via the external switch connecting the appliance to the
power supply mains ("GS", fitted by the electrical installation technician on a suitable panel);
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damages or failures of the appliance due to transportation or installation;
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smell of gas due to probable leaks from the plant itself and in any case all situations that are due to non-compliant plants, con-
sidered (after on-site evaluations) potentially hazardous.
Plant anomalies. If any of the following situations exists, the authorized technician may carry out the "first start up" at his
choice, but the appliance must be left off until the anomalies are removed:
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installations (not potentially hazardous) not carried out according to sound workmanship practices, installations (not potentially
hazardous) not complying with current national and local regulations;
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installations (not potentially hazardous) not carried out according to good workmanship practices, not complying with the in-
structions provided by the manufacturer;
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installations that can cause operational troubles on the appliance.
Step 2: verification/regulation of combustion parameters and first ignition
During the initial activation procedure, the combustion parameters must be checked and set ONLY by a Robur TAC. In this
stage, NEITHER the user NOR the installation technician is authorised to perform such operations, and in so doing may in-
validate the guarantee of the appliance.
The appliance is delivered already regulated for the type of gas requested. Anyway, the combustion parameters must ALWAYS be
checked and set during the first start up.
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 7.1
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52 and 7.2
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52 and Table 7.1
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53.
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 installed) already connected electrically.
1.
Open the internal panel (E) by undoing its bolts.
2.
Open the plant gas supply valve to the appliance and make sure that there is no smell of gas (indicating possible leaks).
In case of gas leaks, go back over Step 1 above and restore the system to compliancy.
3.
Once you are sure there are no gas leaks, close the gas cock.
Now check the static and dynamic mains gas pressure: if the system has multiple appliances, 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 appli-
ances, skip directly from step "3" to step "12".
4.
Undo the bolt sealing the inlet gas pressure socket (D).
5.
Connect the manometer to the gas intake (mains pressure).
6.
Open the gas valve.
7.
Read the value of the static network pressure on the manometer and check that the value read is equal to that stated in Table
5.2
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24 (with tollerance ±15%).
8.
Close the master power switch (GS) on the external electrical panel.
9.
Switch the appliance on. Wait for the appliance to stabilise (3 minutes from 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".
10. Read the 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 network pressure does not corresponde to the value stated in Table 5.2
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24 (with tollerance ±15%), write
down the fault and, at the end of the procedure, notify the installer/user. Received the notify, the user must not operate the
appliance until the fault has been solved and the manufacturer's specifications are met (see Step 1 once again).
11. Restore the appliance by screwing the gas intake seal screw back in.
12. Close the appliance's internal panel (E).
13. Fit a combustion products probe in one of the points provided fro this purpose on the external fumes equipment.
14. Switch the appliance on and wait for it to stabilise (3 minutes).
15. With reference to Table 7.1
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53 and the fumes analyser reading, check that the CO
2
content percentage of the combustion
products is within ±0,2 of the characteristic value for the gas being used.
16. If the value is in the correct range, go to step "17". Otherwise, remove the side panel (N) and follow the instructions given in
steps "25" and "26", including the note, in the procedure given in Paragraph 7.3
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54.
17. Enter menu 2 and execute action "23": timed forcing of the appliance to minimum power (8.0 kW). The procedure to run the
actions of menu 2 is specified in this Paragraph “Step 2".
