BERTO'S PLUS 600 Serie Manual De Instrucciones página 68

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- reduced.
These nozzles are shown in the table "BURNERS".
The gas supply pressure must always be within the ranges
shown in the burners table.
The appliance will not work outside the above pressure
thresholds.
If you wish to check the rated output further, you may
do so by using a gas meter according to the so-called
"volumetric method".
However, it is normally enough to simply check that the
nozzles are functioning correctly.
Checking input pressure (Fig. 1-2-3)
The input pressure should be measured by using a gauge
(min. resolution 0.1 mbar).
Remove the screw (22) from the pressure socket and
connect the gauge; after measuring, retighten the screw
so that it's absolutely airtight (22).
IMPORTANT: The pressure must be checked with all gas
EN
equipment connected and operating.
Check the power according to the volumetric method
Using a gas counter and a stopwatch, you can measure the
gas consumption in a given unit of time. This value will be
compared with the value E, which is calculated as follows:
E =
It's important that the power is measured when the
appliance is in a state of inertia.
Both rated and reduced powers, calculated at the rated
pressure value, are obtained by referring to the "BURNERS"
table. The value of gas heating power can be requested
from the local gas company.
Checking the operation
Ensure that the type of used nozzles corresponds to
that shown in the "BURNERS" table. Check whether the
pressure reducer has a flow rate greater than the sum of
the consumption flow rate of all connected equipment.
Check that the gas supply pipes are adequate.
Checking the pilot light
When correctly adjusted, the pilot light will completely
surround the thermocouple; if it does not, check to see if
the used injector is suitable for the type of gas.
Checking primary air (Fig. 4A)
Regulation is performed by a Venturi pipe by adjusting
the "A" height shown in the "BURNERS" table and verifying
the aspect of the flame is uniform, well ventilated and not
noisy.
Checking the functions
- Start the appliance;
- Check the gas pipes for leaks;
- Check the burner flame, even at the minimum.
Notes for the installer
- Explain and demonstrate how the appliance works to
Burner power
Gas heating power
MOD. N°:
the user according to the instructions, and hand him
Qn
the user's manual.
V kW: Hz: 50/60
- Remind the user that, in the event of any structural
alterations or modifications to the room that houses the appliance, the appliance functions must be rechecked.
Running the appliance on other types of gas
To change over to another type of gas, for example from
methane to liquid, use the correct type of nozzles for the
burner in accordance to the "BURNERS" table.
The nozzles of the burners for different types of gas,
marked in 100ths of mm, are in a case supplied with the
appliance. When the appliance has been transformed
or adapted, recheck its functions as described in
paragraph "Checking the functions". Once you change the
predisposition, indicate the new type of gas on the label.
Replacing the nozzle of the main burner (Fig. 4A - 4B)
To replace the nozzle (30), remove the gravy collection
tray and unloose the fixing screws of the control panel.
Remove the control panel. Use a proper wrench to loosen
the nozzle from its nozzle holder and replace the nozzle
with a new one (see the "BURNERS" table). If necessary,
push the air adjustment coupling back by loosening the
screw (39); that way, the replacement will be easier. After
positioning the new nozzle, restore the distance of the "A"
primary air (see the "BURNERS" table).
Regulation of the pilot light (Fig. 5A - 5B)
The pilot light operates with a nozzle and fixed air. The only
requested operation is to replace the nozzles according to
the gas type as follows:
- Remove the control panel by loosening the fixing
screws.
- Loosen the nut pressing the biconical coupling (no. 14);
remove it (no. 15) and the pilot nozzle (no. 16).
- Replace the pilot nozzle with the correct nozzle,
consulting the "BURNERS" table.
- After replacing the pilot nozzle, retighten the nut
pressing the biconical coupling (no. 14) with the
relevant biconical coupling (no. 15).
Idle adjustment of the PEL 25ST for thermostat models
(Fig. 1)
After having removed the contro panel, adjust the low
flame screw (20) as follows:
- when using LPG, it should be fully screwed down;
- if natural gas is used:
1- Find the knob of the corresponding cock.
2- Turn on the burner, set the maximum temperature
and once it reaches it, turn it to the minimum.
3- Adjust the minimun flow by means of the screw
(20). The flow increases by loosening the screw and
decreases by tightening it.
4- Once the flame is considered suitable for a minimum
setting, check that it corresponds to the minimum
capacity indicated in the table on burners.
5- If the power is less than the value in the table, turn
the minimum screw again and repeat the check
6- If the power is greater than the value indicated in the
table, tighten the minimun flow screw and repeat
the check.
IPX2