EHC ECOSAVE 21K, Инструкция по эксплуатации

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Gas Conversion
If the type of gas needs to be converted from the one specified
on the data plate, the specific “gas conversion kit” must be
requested for a quick and easy conversion.
DANGER
Conversion of the gas type must be performed by a fully
qualified Gas Safe Engineer.
Convert the gas type by installing the gas conversion kit and
adjusting the CO
2
level using the following procedures.
Important
With the "Nozzle and Venturi" table, ensure
that you prepare the correct size of nozzle
and venturi before starting the conversion
procedures.
Turn off the power. 1.
Close the gas shutoff valve on the gas supply. 2.
Remove the front panel of the appliance. 3.
Replace t 4. he gas nozzle located on the gas connection pipe
with the fan.(fig 1)
Connect a flue gas analyzer probe at the flue gas connector 5.
to the flue outlet.
Open the gas shutoff valve on the gas line. 6.
7.
9.
a round 30 seconds.
After should checked to manometer, if Gas/Air ratio is not
located in 0~ -0.1mbar as the following figure(fig 3), you
CAUTION
Ensuring the CO
2
level
Ensure that maximum and minimum output CO
Levels are within the tolerances detailed in the
If the minimum output CO level is not correct, adjust
it by turning the screw located on the gas valve. Turn
it to the right to increase the CO level, and turn it
to the left to decrease it. After adjusting it, check the
maximum output CO level again.
Adjusting the nozzle pressure value
Adjust the nozzle pressure with the gas-air ratio
adjustment screw “C” so that the offset value falls
between 0 to -0.1 mbar.
After the adjustment, turn off the power. 13.
Close off the flue test point after you are satisfied that the 14.
analyzer reading are correct. Ensure that test point "B" and
"C" are fully tightened after the gas/air ratio has been set.
Appendix A
Replace the front cover. 15.
Put a new data plate with the correct type of gas and 16.
correct inlet pressure on the old plate.
Important
Once you ensure that all of the specified
nozzles and ports are properly connected,
and the CO
2
levels are correct, check the
following items:
There is no flame return in the t
combustion chamber.
The flame is not excessively high or
t
separated from the burner.
All the probes used during the t
conversion are perfectly sealed.
There are no gas leakages.
t
2
2
2
2
2
"CO Level" tabel.
Nozzle
Packing
Fig 1. Disassembly
of Nozzle
Make sure that the gas nozzle is not leaking.
R eplace the front cover and turn on the power.
8.
Check the maximum and minimum output CO
2
levels.
After prepare the following figure(fig 2) with manometer, 10.
the boiler set to condition at minimum rated output.
The boiler is settled under minimum rated output after
11.
12.
s hould adjusted the adjustment screw "C" on the gas valve.
47 Appendix EHC