Green Heating Technology
27
Adjustment and Maintenance
WARNING: Hereby described operation can be performed by qualified technicians only.
When regulation/measuring is over, remember to verify the absent of gas leakages.
Do not use free flames to detect gas leakages
The gas valve, exception the PIN plug and the upwards connections, works in NEGATIVE PRES
-
SURE. We do not recommend to use products for the detection of the gas leakages where not
expressively indicated, because these products could penetrate inside the gas valve disturbing
its normal functioning.
The siphon is an integral part of the combustion system and it’s necessary to check its seal
during every technical intervention on the boiler. Verify that both caps (upper and lower) are
properly and completely screwed.
Verify that the combustion products do not go out from the outlet of the condense.
The condense syphon trap of the boiler is equipped with a special device which closes when dry.
Anyway, the seal is guaranteed only when the syphon trap is filled with liquid. So, at the end
of the first firing / commissioning operation, it is recommended to check that the syphon trap
contains liquid, e.g. checking that liquid exits the condense drain of the boiler.
Before switching on the boiler,
make sure that the circulating pump is not blocked
due to inac
-
tivity: in the middle of the cap there is a hole (should there be a cap, remove it) that gives access
to the rotor shaft;
push and turn it using a suitable tool
, usually a "Phillips" screwdriver.
During the commissioning of the
new boiler
, it is necessary to
run the burner for 30 minutes
before checking the combustion
because, in that period of time, any residual fabrication va
-
pours could cause false results in the combustion products analysis.
Remark:
during the first 10 minutes of electrical power supply, the re-ignition delay in heating mode
might
be nil
.
•
The ignition electronics does several ignition attempts, to avoid blocking the boiler when the ignition
fails sporadically.
•
When the gas supply pipe is filled with air (e.g. in case of new installation) it may be necessary to repeat
the ignition cycle several times.
•
The boiler is factory regulated and tested. Anyway it’s advisable, during the commissioning, to check
that the regulation is correct.
First starting up
The first ignition operations consist in verifying the correct installation and functioning, and in the even
-
tual regulations which are necessary:
f
verify that the data of the plate correspond to those of the net supply (electrical, water, gas);
f
verify the absence of the gas leakages from the connections upwards the boiler;
f
verify the proper realization and the efficiency of all the boiler connections (water, gas, heating sys
-
tem and electrical system);
